src/gui_mac.c

/* vi:set ts=8 sts=4 sw=4 noet:
 *
 * VIM - Vi IMproved		by Bram Moolenaar
 *				GUI/Motif support by Robert Webb
 *				Macintosh port by Dany St-Amant
 *					      and Axel Kielhorn
 *				Port to MPW by Bernhard Pruemmer
 *				Initial Carbon port by Ammon Skidmore
 *
 * Do ":help uganda"  in Vim to read copying and usage conditions.
 * Do ":help credits" in Vim to see a list of people who contributed.
 * See README.txt for an overview of the Vim source code.
 */

/*
 * NOTES: - Vim 7+ does not support classic MacOS. Please use Vim 6.x
 *	  - Comments mentioning FAQ refer to the book:
 *	    "Macworld Mac Programming FAQs" from "IDG Books"
 */

/*
 * TODO: Change still to merge from the macvim's iDisk
 *
 * error_ga, mch_errmsg, Navigation's changes in gui_mch_browse
 * uses of MenuItemIndex, changes in gui_mch_set_shellsize,
 * ScrapManager error handling.
 * Comments about function remaining to Carbonize.
 *
 */

/*
 * TODO (Jussi)
 *   * Clipboard does not work (at least some cases)
 *   * ATSU font rendering has some problems
 *   * Investigate and remove dead code (there is still lots of that)
 */

#include <Devices.h> // included first to avoid CR problems
#include "vim.h"

#define USE_CARBONIZED
#define USE_AEVENT		// Enable AEVENT
#undef USE_OFFSETED_WINDOW	// Debugging feature: start Vim window OFFSETed

// Compile as CodeWarrior External Editor
#if defined(FEAT_CW_EDITOR) && !defined(USE_AEVENT)
# define USE_AEVENT // Need Apple Event Support
#endif

// Vim's Scrap flavor.
#define VIMSCRAPFLAVOR 'VIM!'
#define SCRAPTEXTFLAVOR kScrapFlavorTypeUnicode

static EventHandlerUPP mouseWheelHandlerUPP = NULL;
SInt32 gMacSystemVersion;

#ifdef MACOS_CONVERT
# define USE_CARBONKEYHANDLER

static int im_is_active = FALSE;
# if 0
    // TODO: Implement me!
static int im_start_row = 0;
static int im_start_col = 0;
# endif

# define NR_ELEMS(x)	(sizeof(x) / sizeof(x[0]))

static TSMDocumentID gTSMDocument;

static void im_on_window_switch(int active);
static EventHandlerUPP keyEventHandlerUPP = NULL;
static EventHandlerUPP winEventHandlerUPP = NULL;

static pascal OSStatus gui_mac_handle_window_activate(
	EventHandlerCallRef nextHandler, EventRef theEvent, void *data);

static pascal OSStatus gui_mac_handle_text_input(
	EventHandlerCallRef nextHandler, EventRef theEvent, void *data);

static pascal OSStatus gui_mac_update_input_area(
	EventHandlerCallRef nextHandler, EventRef theEvent);

static pascal OSStatus gui_mac_unicode_key_event(
	EventHandlerCallRef nextHandler, EventRef theEvent);

#endif


// Include some file. TODO: move into os_mac.h
#include <Menus.h>
#include <Resources.h>
#include <Processes.h>
#ifdef USE_AEVENT
# include <AppleEvents.h>
# include <AERegistry.h>
#endif
# include <Gestalt.h>
#if UNIVERSAL_INTERFACES_VERSION >= 0x0330
# include <ControlDefinitions.h>
# include <Navigation.h>  // Navigation only part of ??
#endif

// Help Manager (balloon.h, HM prefixed functions) are not supported
// under Carbon (Jussi)
#  if 0
// New Help Interface for Mac, not implemented yet.
#    include <MacHelp.h>
#  endif

/*
 * These seem to be rectangle options. Why are they not found in
 * headers? (Jussi)
 */
#define kNothing 0
#define kCreateEmpty 2 //1
#define kCreateRect 2
#define kDestroy 3

/*
 * Dany: Don't like those...
 */
#define topLeft(r)	(((Point*)&(r))[0])
#define botRight(r)	(((Point*)&(r))[1])


// Time of last mouse click, to detect double-click
static long lastMouseTick = 0;

// ???
static RgnHandle cursorRgn;
static RgnHandle dragRgn;
static Rect dragRect;
static short dragRectEnbl;
static short dragRectControl;

// This variable is set when waiting for an event, which is the only moment
// scrollbar dragging can be done directly.  It's not allowed while commands
// are executed, because it may move the cursor and that may cause unexpected
// problems (e.g., while ":s" is working).
static int allow_scrollbar = FALSE;

// Last mouse click caused contextual menu, (to provide proper release)
static short clickIsPopup;

// Feedback Action for Scrollbar
ControlActionUPP gScrollAction;
ControlActionUPP gScrollDrag;

// Keeping track of which scrollbar is being dragged
static ControlHandle dragged_sb = NULL;

// Vector of char_u --> control index for hotkeys in dialogs
static short *gDialogHotKeys;

static struct
{
    FMFontFamily family;
    FMFontSize size;
    FMFontStyle style;
    Boolean isPanelVisible;
} gFontPanelInfo = { 0, 0, 0, false };

#ifdef MACOS_CONVERT
# define USE_ATSUI_DRAWING
int	    p_macatsui_last;
ATSUStyle   gFontStyle;
ATSUStyle   gWideFontStyle;
Boolean	    gIsFontFallbackSet;
UInt32      useAntialias_cached = 0x0;
#endif

// Colors Macros
#define RGB(r,g,b)	((r) << 16) + ((g) << 8) + (b)
#define Red(c)		((c & 0x00FF0000) >> 16)
#define Green(c)	((c & 0x0000FF00) >>  8)
#define Blue(c)		((c & 0x000000FF) >>  0)

// Key mapping

#define vk_Esc		0x35	// -> 1B

#define vk_F1		0x7A	// -> 10
#define vk_F2		0x78  //0x63
#define vk_F3		0x63  //0x76
#define vk_F4		0x76  //0x60
#define vk_F5		0x60  //0x61
#define vk_F6		0x61  //0x62
#define vk_F7		0x62  //0x63 ?
#define vk_F8		0x64
#define vk_F9		0x65
#define vk_F10		0x6D
#define vk_F11		0x67
#define vk_F12		0x6F
#define vk_F13		0x69
#define vk_F14		0x6B
#define vk_F15		0x71

#define vk_Clr		0x47	// -> 1B (ESC)
#define vk_Enter	0x4C	// -> 03

#define vk_Space	0x31	// -> 20
#define vk_Tab		0x30	// -> 09
#define vk_Return	0x24	// -> 0D
// This is wrong for OSX, what is it for?
#define vk_Delete	0X08	// -> 08 BackSpace

#define vk_Help		0x72	// -> 05
#define vk_Home		0x73	// -> 01
#define	vk_PageUp	0x74	// -> 0D
#define vk_FwdDelete	0x75	// -> 7F
#define	vk_End		0x77	// -> 04
#define vk_PageDown	0x79	// -> 0C

#define vk_Up		0x7E	// -> 1E
#define vk_Down		0x7D	// -> 1F
#define	vk_Left		0x7B	// -> 1C
#define vk_Right	0x7C	// -> 1D

#define vk_Undo		vk_F1
#define vk_Cut		vk_F2
#define	vk_Copy		vk_F3
#define	vk_Paste	vk_F4
#define vk_PrintScreen	vk_F13
#define vk_SCrollLock	vk_F14
#define	vk_Pause	vk_F15
#define	vk_NumLock	vk_Clr
#define vk_Insert	vk_Help

#define KeySym	char

static struct
{
    KeySym  key_sym;
    char_u  vim_code0;
    char_u  vim_code1;
} special_keys[] =
{
    {vk_Up,		'k', 'u'},
    {vk_Down,		'k', 'd'},
    {vk_Left,		'k', 'l'},
    {vk_Right,		'k', 'r'},

    {vk_F1,		'k', '1'},
    {vk_F2,		'k', '2'},
    {vk_F3,		'k', '3'},
    {vk_F4,		'k', '4'},
    {vk_F5,		'k', '5'},
    {vk_F6,		'k', '6'},
    {vk_F7,		'k', '7'},
    {vk_F8,		'k', '8'},
    {vk_F9,		'k', '9'},
    {vk_F10,		'k', ';'},

    {vk_F11,		'F', '1'},
    {vk_F12,		'F', '2'},
    {vk_F13,		'F', '3'},
    {vk_F14,		'F', '4'},
    {vk_F15,		'F', '5'},

//  {XK_Help,		'%', '1'},
//  {XK_Undo,		'&', '8'},
//  {XK_BackSpace,	'k', 'b'},
//  {vk_Delete,		'k', 'b'},
    {vk_Insert,		'k', 'I'},
    {vk_FwdDelete,	'k', 'D'},
    {vk_Home,		'k', 'h'},
    {vk_End,		'@', '7'},
//  {XK_Prior,		'k', 'P'},
//  {XK_Next,		'k', 'N'},
//  {XK_Print,		'%', '9'},

    {vk_PageUp,		'k', 'P'},
    {vk_PageDown,	'k', 'N'},

    // End of list marker:
    {(KeySym)0,		0, 0}
};

/*
 * ------------------------------------------------------------
 * Forward declaration (for those needed)
 * ------------------------------------------------------------
 */

#ifdef USE_AEVENT
OSErr HandleUnusedParms(const AppleEvent *theAEvent);
#endif

#ifdef FEAT_GUI_TABLINE
static void initialise_tabline(void);
static WindowRef drawer = NULL; // TODO: put into gui.h
#endif

#ifdef USE_ATSUI_DRAWING
static void gui_mac_set_font_attributes(GuiFont font);
#endif

/*
 * ------------------------------------------------------------
 * Conversion Utility
 * ------------------------------------------------------------
 */

/*
 * C2Pascal_save
 *
 * Allocate memory and convert the C-String passed in
 * into a pascal string
 *
 */

    char_u *
C2Pascal_save(char_u *Cstring)
{
    char_u  *PascalString;
    int	    len;

    if (Cstring == NULL)
	return NULL;

    len = STRLEN(Cstring);

    if (len > 255) // Truncate if necessary
	len = 255;

    PascalString = alloc(len + 1);
    if (PascalString != NULL)
    {
	mch_memmove(PascalString + 1, Cstring, len);
	PascalString[0] = len;
    }

    return PascalString;
}

/*
 * C2Pascal_save_and_remove_backslash
 *
 * Allocate memory and convert the C-String passed in
 * into a pascal string. Also remove the backslash at the same time
 *
 */

    char_u *
C2Pascal_save_and_remove_backslash(char_u *Cstring)
{
    char_u  *PascalString;
    int	    len;
    char_u  *p, *c;

    len = STRLEN(Cstring);

    if (len > 255) // Truncate if necessary
	len = 255;

    PascalString = alloc(len + 1);
    if (PascalString != NULL)
    {
	for (c = Cstring, p = PascalString+1, len = 0; (*c != 0) && (len < 255); c++)
	{
	    if ((*c == '\\') && (c[1] != 0))
		c++;
	    *p = *c;
	    p++;
	    len++;
	}
	PascalString[0] = len;
    }

    return PascalString;
}

/*
 * Convert the modifiers of an Event into vim's modifiers (mouse)
 */

    int_u
EventModifiers2VimMouseModifiers(EventModifiers macModifiers)
{
    int_u vimModifiers = 0x00;

    if (macModifiers & (shiftKey | rightShiftKey))
	vimModifiers |= MOUSE_SHIFT;
    if (macModifiers & (controlKey | rightControlKey))
	vimModifiers |= MOUSE_CTRL;
    if (macModifiers & (optionKey | rightOptionKey))
	vimModifiers |= MOUSE_ALT;
#if 0
    // Not yet supported
    if (macModifiers & (cmdKey)) // There's no rightCmdKey
	vimModifiers |= MOUSE_CMD;
#endif
    return (vimModifiers);
}

/*
 * Convert the modifiers of an Event into vim's modifiers (keys)
 */

    static int_u
EventModifiers2VimModifiers(EventModifiers macModifiers)
{
    int_u vimModifiers = 0x00;

    if (macModifiers & (shiftKey | rightShiftKey))
	vimModifiers |= MOD_MASK_SHIFT;
    if (macModifiers & (controlKey | rightControlKey))
	vimModifiers |= MOD_MASK_CTRL;
    if (macModifiers & (optionKey | rightOptionKey))
	vimModifiers |= MOD_MASK_ALT;
#ifdef USE_CMD_KEY
    if (macModifiers & (cmdKey)) // There's no rightCmdKey
	vimModifiers |= MOD_MASK_CMD;
#endif
    return (vimModifiers);
}

/*
 * Convert a string representing a point size into pixels. The string should
 * be a positive decimal number, with an optional decimal point (eg, "12", or
 * "10.5"). The pixel value is returned, and a pointer to the next unconverted
 * character is stored in *end. The flag "vertical" says whether this
 * calculation is for a vertical (height) size or a horizontal (width) one.
 *
 * From gui_w48.c
 */
    static int
points_to_pixels(char_u *str, char_u **end, int vertical)
{
    int		pixels;
    int		points = 0;
    int		divisor = 0;

    while (*str)
    {
	if (*str == '.' && divisor == 0)
	{
	    // Start keeping a divisor, for later
	    divisor = 1;
	    continue;
	}

	if (!isdigit(*str))
	    break;

	points *= 10;
	points += *str - '0';
	divisor *= 10;

	++str;
    }

    if (divisor == 0)
	divisor = 1;

    pixels = points/divisor;
    *end = str;
    return pixels;
}

#ifdef MACOS_CONVERT
/*
 * Deletes all traces of any Windows-style mnemonic text (including any
 * parentheses) from a menu item and returns the cleaned menu item title.
 * The caller is responsible for releasing the returned string.
 */
    static CFStringRef
menu_title_removing_mnemonic(vimmenu_T *menu)
{
    CFStringRef		name;
    size_t		menuTitleLen;
    CFIndex		displayLen;
    CFRange		mnemonicStart;
    CFRange		mnemonicEnd;
    CFMutableStringRef	cleanedName;

    menuTitleLen = STRLEN(menu->dname);
    name = (CFStringRef) mac_enc_to_cfstring(menu->dname, menuTitleLen);

    if (name)
    {
	// Simple mnemonic-removal algorithm, assumes single parenthesized
	// mnemonic character towards the end of the menu text
	mnemonicStart = CFStringFind(name, CFSTR("("), kCFCompareBackwards);
	displayLen = CFStringGetLength(name);

	if (mnemonicStart.location != kCFNotFound
		&& (mnemonicStart.location + 2) < displayLen
		&& CFStringGetCharacterAtIndex(name,
		       mnemonicStart.location + 1) == (UniChar)menu->mnemonic)
	{
	    if (CFStringFindWithOptions(name, CFSTR(")"),
			CFRangeMake(mnemonicStart.location + 1,
			    displayLen - mnemonicStart.location - 1),
			kCFCompareBackwards, &mnemonicEnd) &&
		    (mnemonicStart.location + 2) == mnemonicEnd.location)
	    {
		cleanedName = CFStringCreateMutableCopy(NULL, 0, name);
		if (cleanedName)
		{
		    CFStringDelete(cleanedName,
			    CFRangeMake(mnemonicStart.location,
				mnemonicEnd.location + 1 -
				mnemonicStart.location));

		    CFRelease(name);
		    name = cleanedName;
		}
	    }
	}
    }

    return name;
}
#endif

/*
 * Convert a list of FSSpec aliases into a list of fullpathname
 * character strings.
 */

    char_u **
new_fnames_from_AEDesc(AEDesc *theList, long *numFiles, OSErr *error)
{
    char_u	**fnames = NULL;
    OSErr	newError;
    long	fileCount;
    FSSpec	fileToOpen;
    long	actualSize;
    AEKeyword	dummyKeyword;
    DescType	dummyType;

    // Get number of files in list
    *error = AECountItems(theList, numFiles);
    if (*error)
	return fnames;

    // Allocate the pointer list
    fnames = ALLOC_MULT(char_u *, *numFiles);

    // Empty out the list
    for (fileCount = 0; fileCount < *numFiles; fileCount++)
	fnames[fileCount] = NULL;

    // Scan the list of FSSpec
    for (fileCount = 1; fileCount <= *numFiles; fileCount++)
    {
	// Get the alias for the nth file, convert to an FSSpec
	newError = AEGetNthPtr(theList, fileCount, typeFSS,
				&dummyKeyword, &dummyType,
				(Ptr) &fileToOpen, sizeof(FSSpec), &actualSize);
	if (newError)
	{
	    // Caller is able to clean up
	    // TODO: Should be clean up or not? For safety.
	    return fnames;
	}

	// Convert the FSSpec to a pathname
	fnames[fileCount - 1] = FullPathFromFSSpec_save(fileToOpen);
    }

    return (fnames);
}

/*
 * ------------------------------------------------------------
 * CodeWarrior External Editor Support
 * ------------------------------------------------------------
 */
#ifdef FEAT_CW_EDITOR

/*
 * Handle the Window Search event from CodeWarrior
 *
 * Description
 * -----------
 *
 * The IDE sends the Window Search AppleEvent to the editor when it
 * needs to know whether a particular file is open in the editor.
 *
 * Event Reply
 * -----------
 *
 * None. Put data in the location specified in the structure received.
 *
 * Remarks
 * -------
 *
 * When the editor receives this event, determine whether the specified
 * file is open. If it is, return the modification date/time for that file
 * in the appropriate location specified in the structure. If the file is
 * not opened, put the value fnfErr(file not found) in that location.
 *
 */

typedef struct WindowSearch WindowSearch;
struct WindowSearch // for handling class 'KAHL', event 'SRCH', keyDirectObject typeChar
{
    FSSpec theFile; // identifies the file
    long *theDate; // where to put the modification date/time
};

    pascal OSErr
Handle_KAHL_SRCH_AE(
	const AppleEvent    *theAEvent,
	AppleEvent	    *theReply,
	long		    refCon)
{
    OSErr	error = noErr;
    buf_T	*buf;
    int		foundFile = false;
    DescType	typeCode;
    WindowSearch SearchData;
    Size	actualSize;

    error = AEGetParamPtr(theAEvent, keyDirectObject, typeChar, &typeCode, (Ptr) &SearchData, sizeof(WindowSearch), &actualSize);
    if (error)
	return error;

    error = HandleUnusedParms(theAEvent);
    if (error)
	return error;

    FOR_ALL_BUFFERS(buf)
	if (buf->b_ml.ml_mfp != NULL
		&& SearchData.theFile.parID == buf->b_FSSpec.parID
		&& SearchData.theFile.name[0] == buf->b_FSSpec.name[0]
		&& STRNCMP(SearchData.theFile.name, buf->b_FSSpec.name, buf->b_FSSpec.name[0] + 1) == 0)
	    {
		foundFile = true;
		break;
	    }

    if (foundFile == false)
	*SearchData.theDate = fnfErr;
    else
	*SearchData.theDate = buf->b_mtime;

    return error;
};

/*
 * Handle the Modified (from IDE to Editor) event from CodeWarrior
 *
 * Description
 * -----------
 *
 * The IDE sends this event to the external editor when it wants to
 * know which files that are open in the editor have been modified.
 *
 * Parameters   None.
 * ----------
 *
 * Event Reply
 * -----------
 * The reply for this event is:
 *
 * keyDirectObject typeAEList required
 *  each element in the list is a structure of typeChar
 *
 * Remarks
 * -------
 *
 * When building the reply event, include one element in the list for
 * each open file that has been modified.
 *
 */

typedef struct ModificationInfo ModificationInfo;
struct ModificationInfo // for replying to class 'KAHL', event 'MOD ', keyDirectObject typeAEList
{
    FSSpec theFile; // identifies the file
    long theDate; // the date/time the file was last modified
    short saved; // set this to zero when replying, unused
};

    pascal OSErr
Handle_KAHL_MOD_AE(
	const AppleEvent    *theAEvent,
	AppleEvent	    *theReply,
	long		    refCon)
{
    OSErr	error = noErr;
    AEDescList	replyList;
    long	numFiles;
    ModificationInfo theFile;
    buf_T	*buf;

    theFile.saved = 0;

    error = HandleUnusedParms(theAEvent);
    if (error)
	return error;

    // Send the reply
//  replyObject.descriptorType = typeNull;
// replyObject.dataHandle     = nil;

// AECreateDesc(typeChar, (Ptr)&title[1], title[0], &data)
    error = AECreateList(nil, 0, false, &replyList);
    if (error)
	return error;

#if 0
    error = AECountItems(&replyList, &numFiles);

    // AEPutKeyDesc(&replyList, keyAEPnject, &aDesc)
    // AEPutKeyPtr(&replyList, keyAEPosition, typeChar, (Ptr)&theType,
    // sizeof(DescType))

    // AEPutDesc
#endif

    numFiles = 0;
    FOR_ALL_BUFFERS(buf)
	if (buf->b_ml.ml_mfp != NULL)
	{
	    // Add this file to the list
	    theFile.theFile = buf->b_FSSpec;
	    theFile.theDate = buf->b_mtime;
//	    theFile.theDate = time(NULL) & (time_t) 0xFFFFFFF0;
	    error = AEPutPtr(&replyList, numFiles, typeChar, (Ptr) &theFile, sizeof(theFile));
	};

#if 0
    error = AECountItems(&replyList, &numFiles);
#endif

    // We can add data only if something to reply
    error = AEPutParamDesc(theReply, keyDirectObject, &replyList);

    if (replyList.dataHandle)
	AEDisposeDesc(&replyList);

    return error;
};

/*
 * Handle the Get Text event from CodeWarrior
 *
 * Description
 * -----------
 *
 * The IDE sends the Get Text AppleEvent to the editor when it needs
 * the source code from a file. For example, when the user issues a
 * Check Syntax or Compile command, the compiler needs access to
 * the source code contained in the file.
 *
 * Event Reply
 * -----------
 *
 * None. Put data in locations specified in the structure received.
 *
 * Remarks
 * -------
 *
 * When the editor receives this event, it must set the size of the handle
 * in theText to fit the data in the file. It must then copy the entire
 * contents of the specified file into the memory location specified in
 * theText.
 *
 */

typedef struct CW_GetText CW_GetText;
struct CW_GetText // for handling class 'KAHL', event 'GTTX', keyDirectObject typeChar
{
    FSSpec theFile; // identifies the file
    Handle theText; // the location where you return the text (must be resized properly)
    long *unused;   // 0 (not used)
    long *theDate;  // where to put the modification date/time
};

    pascal OSErr
Handle_KAHL_GTTX_AE(
	const AppleEvent    *theAEvent,
	AppleEvent	    *theReply,
	long		    refCon)
{
    OSErr	error = noErr;
    buf_T	*buf;
    int		foundFile = false;
    DescType	typeCode;
    CW_GetText	GetTextData;
    Size	actualSize;
    char_u	*line;
    char_u	*fullbuffer = NULL;
    long	linesize;
    long	lineStart;
    long	BufferSize;
    long	lineno;

    error = AEGetParamPtr(theAEvent, keyDirectObject, typeChar, &typeCode, (Ptr) &GetTextData, sizeof(GetTextData), &actualSize);

    if (error)
	return error;

    FOR_ALL_BUFFERS(buf)
	if (buf->b_ml.ml_mfp != NULL)
	    if (GetTextData.theFile.parID == buf->b_FSSpec.parID)
	    {
		foundFile = true;
		break;
	    }

    if (foundFile)
    {
	BufferSize = 0; // GetHandleSize(GetTextData.theText);
	for (lineno = 0; lineno <= buf->b_ml.ml_line_count; lineno++)
	{
	    // Must use the right buffer
	    line = ml_get_buf(buf, (linenr_T) lineno, FALSE);
	    linesize = STRLEN(line) + 1;
	    lineStart = BufferSize;
	    BufferSize += linesize;
	    // Resize handle to linesize+1 to include the linefeed
	    SetHandleSize(GetTextData.theText, BufferSize);
	    if (GetHandleSize(GetTextData.theText) != BufferSize)
	    {
		break; // Simple handling for now
	    }
	    else
	    {
		HLock(GetTextData.theText);
		fullbuffer = (char_u *) *GetTextData.theText;
		STRCPY((char_u *)(fullbuffer + lineStart), line);
		fullbuffer[BufferSize-1] = '\r';
		HUnlock(GetTextData.theText);
	    }
	}
	if (fullbuffer != NULL)
	{
	    HLock(GetTextData.theText);
	    fullbuffer[BufferSize-1] = 0;
	    HUnlock(GetTextData.theText);
	}
	if (foundFile == false)
	    *GetTextData.theDate = fnfErr;
	else
//	    *GetTextData.theDate = time(NULL) & (time_t) 0xFFFFFFF0;
	    *GetTextData.theDate = buf->b_mtime;
    }

    error = HandleUnusedParms(theAEvent);

    return error;
}

/*
 *
 */

/*
 * Taken from MoreAppleEvents:ProcessHelpers
 */
    pascal	OSErr
FindProcessBySignature(
	const OSType		targetType,
	const OSType		targetCreator,
	ProcessSerialNumberPtr	psnPtr)
{
    OSErr	anErr = noErr;
    Boolean	lookingForProcess = true;

    ProcessInfoRec  infoRec;

    infoRec.processInfoLength = sizeof(ProcessInfoRec);
    infoRec.processName = nil;
    infoRec.processAppSpec = nil;

    psnPtr->lowLongOfPSN = kNoProcess;
    psnPtr->highLongOfPSN = kNoProcess;

    while (lookingForProcess)
    {
	anErr = GetNextProcess(psnPtr);
	if (anErr != noErr)
	    lookingForProcess = false;
	else
	{
	    anErr = GetProcessInformation(psnPtr, &infoRec);
	    if ((anErr == noErr)
		    && (infoRec.processType == targetType)
		    && (infoRec.processSignature == targetCreator))
		lookingForProcess = false;
	}
    }

    return anErr;
}//end FindProcessBySignature

    void
Send_KAHL_MOD_AE(buf_T *buf)
{
    OSErr	anErr = noErr;
    AEDesc	targetAppDesc = { typeNull, nil };
    ProcessSerialNumber	    psn = { kNoProcess, kNoProcess };
    AppleEvent	theReply = { typeNull, nil };
    AESendMode	sendMode;
    AppleEvent  theEvent = {typeNull, nil };
    AEIdleUPP   idleProcUPP = nil;
    ModificationInfo ModData;


    anErr = FindProcessBySignature('APPL', 'CWIE', &psn);
    if (anErr == noErr)
    {
	anErr = AECreateDesc(typeProcessSerialNumber, &psn,
			      sizeof(ProcessSerialNumber), &targetAppDesc);

	if (anErr == noErr)
	{
	    anErr = AECreateAppleEvent( 'KAHL', 'MOD ', &targetAppDesc,
					kAutoGenerateReturnID, kAnyTransactionID, &theEvent);
	}

	AEDisposeDesc(&targetAppDesc);

	// Add the parms
	ModData.theFile = buf->b_FSSpec;
	ModData.theDate = buf->b_mtime;

	if (anErr == noErr)
	    anErr = AEPutParamPtr(&theEvent, keyDirectObject, typeChar, &ModData, sizeof(ModData));

	if (idleProcUPP == nil)
	    sendMode = kAENoReply;
	else
	    sendMode = kAEWaitReply;

	if (anErr == noErr)
	    anErr = AESend(&theEvent, &theReply, sendMode, kAENormalPriority, kNoTimeOut, idleProcUPP, nil);
	if (anErr == noErr  &&  sendMode == kAEWaitReply)
	{
//	    anErr =  AEHGetHandlerError(&theReply);
	}
	(void) AEDisposeDesc(&theReply);
    }
}
#endif // FEAT_CW_EDITOR

/*
 * ------------------------------------------------------------
 * Apple Event Handling procedure
 * ------------------------------------------------------------
 */
#ifdef USE_AEVENT

/*
 * Handle the Unused parms of an AppleEvent
 */

    OSErr
HandleUnusedParms(const AppleEvent *theAEvent)
{
    OSErr	error;
    long	actualSize;
    DescType	dummyType;
    AEKeyword	missedKeyword;

    // Get the "missed keyword" attribute from the AppleEvent.
    error = AEGetAttributePtr(theAEvent, keyMissedKeywordAttr,
			      typeKeyword, &dummyType,
			      (Ptr)&missedKeyword, sizeof(missedKeyword),
			      &actualSize);

    // If the descriptor isn't found, then we got the required parameters.
    if (error == errAEDescNotFound)
    {
	error = noErr;
    }
    else
    {
#if 0
	// Why is this removed?
	error = errAEEventNotHandled;
#endif
    }

    return error;
}


/*
 * Handle the ODoc AppleEvent
 *
 * Deals with all files dragged to the application icon.
 *
 */

typedef struct SelectionRange SelectionRange;
struct SelectionRange // for handling kCoreClassEvent:kOpenDocuments:keyAEPosition typeChar
{
    short unused1; // 0 (not used)
    short lineNum; // line to select (<0 to specify range)
    long startRange; // start of selection range (if line < 0)
    long endRange; // end of selection range (if line < 0)
    long unused2; // 0 (not used)
    long theDate; // modification date/time
};

static long drop_numFiles;
static short drop_gotPosition;
static SelectionRange drop_thePosition;

    static void
drop_callback(void *cookie UNUSED)
{
    // TODO: Handle the goto/select line more cleanly
    if ((drop_numFiles == 1) & (drop_gotPosition))
    {
	if (drop_thePosition.lineNum >= 0)
	{
	    lnum = drop_thePosition.lineNum + 1;
	//  oap->motion_type = MLINE;
	// setpcmark();
	    if (lnum < 1L)
		lnum = 1L;
	    else if (lnum > curbuf->b_ml.ml_line_count)
		lnum = curbuf->b_ml.ml_line_count;
	    curwin->w_cursor.lnum = lnum;
	    curwin->w_cursor.col = 0;
	//  beginline(BL_SOL | BL_FIX);
	}
	else
	    goto_byte(drop_thePosition.startRange + 1);
    }

    // Update the screen display
    update_screen(NOT_VALID);

    // Select the text if possible
    if (drop_gotPosition)
    {
	VIsual_active = TRUE;
	VIsual_select = FALSE;
	VIsual = curwin->w_cursor;
	if (drop_thePosition.lineNum < 0)
	{
	    VIsual_mode = 'v';
	    goto_byte(drop_thePosition.endRange);
	}
	else
	{
	    VIsual_mode = 'V';
	    VIsual.col = 0;
	}
    }
}

/*
 * The IDE uses the optional keyAEPosition parameter to tell the ed-
 * itor the selection range. If lineNum is zero or greater, scroll the text
 * to the specified line. If lineNum is less than zero, use the values in
 * startRange and endRange to select the specified characters. Scroll
 * the text to display the selection. If lineNum, startRange, and
 * endRange are all negative, there is no selection range specified.
 */
    pascal OSErr
HandleODocAE(const AppleEvent *theAEvent, AppleEvent *theReply, long refCon)
{
    /*
     * TODO: Clean up the code with convert the AppleEvent into
     *       a ":args"
     */
    OSErr	error = noErr;
//    OSErr	firstError = noErr;
//    short	numErrors = 0;
    AEDesc	theList;
    DescType	typeCode;
    long	numFiles;
 //   long	 fileCount;
    char_u	**fnames;
//    char_u	fname[256];
    Size	actualSize;
    SelectionRange thePosition;
    short	gotPosition = false;
    long	lnum;

    // the direct object parameter is the list of aliases to files (one or more)
    error = AEGetParamDesc(theAEvent, keyDirectObject, typeAEList, &theList);
    if (error)
	return error;


    error = AEGetParamPtr(theAEvent, keyAEPosition, typeChar, &typeCode, (Ptr) &thePosition, sizeof(SelectionRange), &actualSize);
    if (error == noErr)
	gotPosition = true;
    if (error == errAEDescNotFound)
	error = noErr;
    if (error)
	return error;

/*
    error = AEGetParamDesc(theAEvent, keyAEPosition, typeChar, &thePosition);

    if (^error) then
    {
	if (thePosition.lineNum >= 0)
	{
	  // Goto this line
	}
	else
	{
	  // Set the range char wise
	}
    }
 */

    reset_VIsual();
    fnames = new_fnames_from_AEDesc(&theList, &numFiles, &error);

    if (error)
    {
      // TODO: empty fnames[] first
      vim_free(fnames);
      return (error);
    }

    if (starting > 0)
    {
	int i;
	char_u *p;
	int fnum = -1;

	// these are the initial files dropped on the Vim icon
	for (i = 0 ; i < numFiles; i++)
	{
	    if (ga_grow(&global_alist.al_ga, 1) == FAIL
				      || (p = vim_strsave(fnames[i])) == NULL)
		mch_exit(2);
	    else
		alist_add(&global_alist, p, 2);
	    if (fnum == -1)
		fnum = GARGLIST[GARGCOUNT - 1].ae_fnum;
	}

	// If the file name was already in the buffer list we need to switch
	// to it.
	if (curbuf->b_fnum != fnum)
	{
	    char_u cmd[30];

	    vim_snprintf((char *)cmd, 30, "silent %dbuffer", fnum);
	    do_cmdline_cmd(cmd);
	}

	// Change directory to the location of the first file.
	if (GARGCOUNT > 0
		      && vim_chdirfile(alist_name(&GARGLIST[0]), "drop") == OK)
	    shorten_fnames(TRUE);

	goto finished;
    }

    // Handle the drop, :edit to get to the file
    drop_numFiles = numFiles;
    drop_gotPosition = gotPosition;
    drop_thePosition = thePosition;
    handle_drop(numFiles, fnames, FALSE, drop_callback, NULL);

    setcursor();
    out_flush();

    // Fake mouse event to wake from stall
    PostEvent(mouseUp, 0);

finished:
    AEDisposeDesc(&theList); // dispose what we allocated

    error = HandleUnusedParms(theAEvent);
    return error;
}

/*
 *
 */
    pascal OSErr
Handle_aevt_oapp_AE(
	const AppleEvent    *theAEvent,
	AppleEvent	    *theReply,
	long		    refCon)
{
    OSErr	error = noErr;

    error = HandleUnusedParms(theAEvent);
    return error;
}

/*
 *
 */
    pascal OSErr
Handle_aevt_quit_AE(
	const AppleEvent    *theAEvent,
	AppleEvent	    *theReply,
	long		    refCon)
{
    OSErr	error = noErr;

    error = HandleUnusedParms(theAEvent);
    if (error)
	return error;

    // Need to fake a :confirm qa
    do_cmdline_cmd((char_u *)"confirm qa");

    return error;
}

/*
 *
 */
    pascal OSErr
Handle_aevt_pdoc_AE(
	const AppleEvent    *theAEvent,
	AppleEvent	    *theReply,
	long		    refCon)
{
    OSErr	error = noErr;

    error = HandleUnusedParms(theAEvent);

    return error;
}

/*
 * Handling of unknown AppleEvent
 *
 * (Just get rid of all the parms)
 */
    pascal OSErr
Handle_unknown_AE(
	const AppleEvent    *theAEvent,
	AppleEvent	    *theReply,
	long		    refCon)
{
    OSErr	error = noErr;

    error = HandleUnusedParms(theAEvent);

    return error;
}


/*
 * Install the various AppleEvent Handlers
 */
    OSErr
InstallAEHandlers(void)
{
    OSErr   error;

    // install open application handler
    error = AEInstallEventHandler(kCoreEventClass, kAEOpenApplication,
		    NewAEEventHandlerUPP(Handle_aevt_oapp_AE), 0, false);
    if (error)
	return error;

    // install quit application handler
    error = AEInstallEventHandler(kCoreEventClass, kAEQuitApplication,
		    NewAEEventHandlerUPP(Handle_aevt_quit_AE), 0, false);
    if (error)
	return error;

    // install open document handler
    error = AEInstallEventHandler(kCoreEventClass, kAEOpenDocuments,
		    NewAEEventHandlerUPP(HandleODocAE), 0, false);
    if (error)
	return error;

    // install print document handler
    error = AEInstallEventHandler(kCoreEventClass, kAEPrintDocuments,
		    NewAEEventHandlerUPP(Handle_aevt_pdoc_AE), 0, false);

// Install Core Suite
#if 0
    error = AEInstallEventHandler(kAECoreSuite, kAEClone,
		    NewAEEventHandlerUPP(Handle_unknown_AE), nil, false);

    error = AEInstallEventHandler(kAECoreSuite, kAEClose,
		    NewAEEventHandlerUPP(Handle_unknown_AE), nil, false);

    error = AEInstallEventHandler(kAECoreSuite, kAECountElements,
		    NewAEEventHandlerUPP(Handle_unknown_AE), nil, false);

    error = AEInstallEventHandler(kAECoreSuite, kAECreateElement,
		    NewAEEventHandlerUPP(Handle_unknown_AE), nil, false);

    error = AEInstallEventHandler(kAECoreSuite, kAEDelete,
		    NewAEEventHandlerUPP(Handle_unknown_AE), nil, false);

    error = AEInstallEventHandler(kAECoreSuite, kAEDoObjectsExist,
		    NewAEEventHandlerUPP(Handle_unknown_AE), nil, false);

    error = AEInstallEventHandler(kAECoreSuite, kAEGetData,
		    NewAEEventHandlerUPP(Handle_unknown_AE), kAEGetData, false);

    error = AEInstallEventHandler(kAECoreSuite, kAEGetDataSize,
		    NewAEEventHandlerUPP(Handle_unknown_AE), kAEGetDataSize, false);

    error = AEInstallEventHandler(kAECoreSuite, kAEGetClassInfo,
		    NewAEEventHandlerUPP(Handle_unknown_AE), nil, false);

    error = AEInstallEventHandler(kAECoreSuite, kAEGetEventInfo,
		    NewAEEventHandlerUPP(Handle_unknown_AE), nil, false);

    error = AEInstallEventHandler(kAECoreSuite, kAEMove,
		    NewAEEventHandlerUPP(Handle_unknown_AE), nil, false);

    error = AEInstallEventHandler(kAECoreSuite, kAESave,
		    NewAEEventHandlerUPP(Handle_unknown_AE), nil, false);

    error = AEInstallEventHandler(kAECoreSuite, kAESetData,
		    NewAEEventHandlerUPP(Handle_unknown_AE), nil, false);
#endif

#ifdef FEAT_CW_EDITOR
    /*
     * Bind codewarrior support handlers
     */
    error = AEInstallEventHandler('KAHL', 'GTTX',
		    NewAEEventHandlerUPP(Handle_KAHL_GTTX_AE), 0, false);
    if (error)
	return error;
    error = AEInstallEventHandler('KAHL', 'SRCH',
		    NewAEEventHandlerUPP(Handle_KAHL_SRCH_AE), 0, false);
    if (error)
	return error;
    error = AEInstallEventHandler('KAHL', 'MOD ',
		    NewAEEventHandlerUPP(Handle_KAHL_MOD_AE), 0, false);
#endif

    return error;

}
#endif // USE_AEVENT


/*
 * Callback function, installed by InstallFontPanelHandler(), below,
 * to handle Font Panel events.
 */
    static OSStatus
FontPanelHandler(
	EventHandlerCallRef inHandlerCallRef,
	EventRef inEvent,
	void *inUserData)
{
    if (GetEventKind(inEvent) == kEventFontPanelClosed)
    {
	gFontPanelInfo.isPanelVisible = false;
	return noErr;
    }

    if (GetEventKind(inEvent) == kEventFontSelection)
    {
	OSStatus status;
	FMFontFamily newFamily;
	FMFontSize newSize;
	FMFontStyle newStyle;

	// Retrieve the font family ID number.
	status = GetEventParameter(inEvent, kEventParamFMFontFamily,
		/*inDesiredType=*/typeFMFontFamily, /*outActualType=*/NULL,
		/*inBufferSize=*/sizeof(FMFontFamily), /*outActualSize=*/NULL,
		&newFamily);
	if (status == noErr)
	    gFontPanelInfo.family = newFamily;

	// Retrieve the font size.
	status = GetEventParameter(inEvent, kEventParamFMFontSize,
		typeFMFontSize, NULL, sizeof(FMFontSize), NULL, &newSize);
	if (status == noErr)
	    gFontPanelInfo.size = newSize;

	// Retrieve the font style (bold, etc.).  Currently unused.
	status = GetEventParameter(inEvent, kEventParamFMFontStyle,
		typeFMFontStyle, NULL, sizeof(FMFontStyle), NULL, &newStyle);
	if (status == noErr)
	    gFontPanelInfo.style = newStyle;
    }
    return noErr;
}


    static void
InstallFontPanelHandler(void)
{
    EventTypeSpec eventTypes[2];
    EventHandlerUPP handlerUPP;
    // EventHandlerRef handlerRef;

    eventTypes[0].eventClass = kEventClassFont;
    eventTypes[0].eventKind  = kEventFontSelection;
    eventTypes[1].eventClass = kEventClassFont;
    eventTypes[1].eventKind  = kEventFontPanelClosed;

    handlerUPP = NewEventHandlerUPP(FontPanelHandler);

    InstallApplicationEventHandler(handlerUPP, /*numTypes=*/2, eventTypes,
	    /*userData=*/NULL, /*handlerRef=*/NULL);
}


/*
 * Fill the buffer pointed to by outName with the name and size
 * of the font currently selected in the Font Panel.
 */
#define FONT_STYLE_BUFFER_SIZE 32
    static void
GetFontPanelSelection(char_u *outName)
{
    Str255	    buf;
    ByteCount	    fontNameLen = 0;
    ATSUFontID	    fid;
    char_u	    styleString[FONT_STYLE_BUFFER_SIZE];

    if (!outName)
	return;

    if (FMGetFontFamilyName(gFontPanelInfo.family, buf) == noErr)
    {
	// Canonicalize localized font names
	if (FMGetFontFromFontFamilyInstance(gFontPanelInfo.family,
		    gFontPanelInfo.style, &fid, NULL) != noErr)
	    return;

	// Request font name with Mac encoding (otherwise we could
	// get an unwanted utf-16 name)
	if (ATSUFindFontName(fid, kFontFullName, kFontMacintoshPlatform,
		    kFontNoScriptCode, kFontNoLanguageCode,
		    255, (char *)outName, &fontNameLen, NULL) != noErr)
	    return;

	// Only encode font size, because style (bold, italic, etc) is
	// already part of the font full name
	vim_snprintf((char *)styleString, FONT_STYLE_BUFFER_SIZE, ":h%d",
		gFontPanelInfo.size/*,
		((gFontPanelInfo.style & bold)!=0 ? ":b" : ""),
		((gFontPanelInfo.style & italic)!=0 ? ":i" : ""),
		((gFontPanelInfo.style & underline)!=0 ? ":u" : "")*/);

	if ((fontNameLen + STRLEN(styleString)) < 255)
	    STRCPY(outName + fontNameLen, styleString);
    }
    else
    {
	*outName = NUL;
    }
}


/*
 * ------------------------------------------------------------
 * Unfiled yet
 * ------------------------------------------------------------
 */

/*
 *  gui_mac_get_menu_item_index
 *
 *  Returns the index inside the menu where
 */
    short // Should we return MenuItemIndex?
gui_mac_get_menu_item_index(vimmenu_T *pMenu)
{
    short	index;
    short	itemIndex = -1;
    vimmenu_T	*pBrother;

    // Only menu without parent are the:
    // -menu in the menubar
    // -popup menu
    // -toolbar (guess)
    //
    // Which are not items anyway.
    if (pMenu->parent)
    {
	// Start from the Oldest Brother
	pBrother = pMenu->parent->children;
	index = 1;
	while ((pBrother) && (itemIndex == -1))
	{
	    if (pBrother == pMenu)
		itemIndex = index;
	    index++;
	    pBrother = pBrother->next;
	}
    }
    return itemIndex;
}

    static vimmenu_T *
gui_mac_get_vim_menu(short menuID, short itemIndex, vimmenu_T *pMenu)
{
    short	index;
    vimmenu_T	*pChildMenu;
    vimmenu_T	*pElder = pMenu->parent;


    // Only menu without parent are the:
    // -menu in the menubar
    // -popup menu
    // -toolbar (guess)
    //
    // Which are not items anyway.

    if ((pElder) && (pElder->submenu_id == menuID))
    {
	for (index = 1; (index != itemIndex) && (pMenu != NULL); index++)
	    pMenu = pMenu->next;
    }
    else
    {
	for (; pMenu != NULL; pMenu = pMenu->next)
	{
	    if (pMenu->children != NULL)
	    {
		pChildMenu = gui_mac_get_vim_menu
			   (menuID, itemIndex, pMenu->children);
		if (pChildMenu)
		{
		    pMenu = pChildMenu;
		    break;
		}
	    }
	}
    }
    return pMenu;
}

/*
 * ------------------------------------------------------------
 * MacOS Feedback procedures
 * ------------------------------------------------------------
 */
    pascal
    void
gui_mac_drag_thumb(ControlHandle theControl, short partCode)
{
    scrollbar_T		*sb;
    int			value, dragging;
    ControlHandle	theControlToUse;
    int			dont_scroll_save = dont_scroll;

    theControlToUse = dragged_sb;

    sb = gui_find_scrollbar((long) GetControlReference(theControlToUse));

    if (sb == NULL)
	return;

    // Need to find value by diff between Old Poss New Pos
    value = GetControl32BitValue(theControlToUse);
    dragging = (partCode != 0);

    // When "allow_scrollbar" is FALSE still need to remember the new
    // position, but don't actually scroll by setting "dont_scroll".
    dont_scroll = !allow_scrollbar;
    gui_drag_scrollbar(sb, value, dragging);
    dont_scroll = dont_scroll_save;
}

    pascal
    void
gui_mac_scroll_action(ControlHandle theControl, short partCode)
{
    // TODO: have live support
    scrollbar_T *sb, *sb_info;
    long	data;
    long	value;
    int		page;
    int		dragging = FALSE;
    int		dont_scroll_save = dont_scroll;

    sb = gui_find_scrollbar((long)GetControlReference(theControl));

    if (sb == NULL)
	return;

    if (sb->wp != NULL)		// Left or right scrollbar
    {
	/*
	 * Careful: need to get scrollbar info out of first (left) scrollbar
	 * for window, but keep real scrollbar too because we must pass it to
	 * gui_drag_scrollbar().
	 */
	sb_info = &sb->wp->w_scrollbars[0];

	if (sb_info->size > 5)
	    page = sb_info->size - 2;	// use two lines of context
	else
	    page = sb_info->size;
    }
    else			// Bottom scrollbar
    {
	sb_info = sb;
	page = curwin->w_width - 5;
    }

    switch (partCode)
    {
	case  kControlUpButtonPart:   data = -1;    break;
	case  kControlDownButtonPart: data = 1;     break;
	case  kControlPageDownPart:   data = page;  break;
	case  kControlPageUpPart:     data = -page; break;
		    default: data = 0; break;
    }

    value = sb_info->value + data;
//  if (value > sb_info->max)
//      value = sb_info->max;
//  else if (value < 0)
//	value = 0;

    // When "allow_scrollbar" is FALSE still need to remember the new
    // position, but don't actually scroll by setting "dont_scroll".
    dont_scroll = !allow_scrollbar;
    gui_drag_scrollbar(sb, value, dragging);
    dont_scroll = dont_scroll_save;

    out_flush();
    gui_mch_set_scrollbar_thumb(sb, value, sb_info->size, sb_info->max);

#if 0
    if (sb_info->wp != NULL)
    {
	win_T	*wp;
	int	sb_num;

	sb_num = 0;
	for (wp = firstwin; wp != sb->wp && wp != NULL; wp = W_NEXT(wp))
	sb_num++;

	if (wp != NULL)
	{
	    current_scrollbar = sb_num;
	    scrollbar_value = value;
	    gui_do_scroll();
	    gui_mch_set_scrollbar_thumb(sb, value, sb_info->size, sb_info->max);
	}
    }
#endif
}

/*
 * ------------------------------------------------------------
 * MacOS Click Handling procedures
 * ------------------------------------------------------------
 */


/*
 * Handle a click inside the window, it may happens in the
 * scrollbar or the contents.
 *
 * TODO: Add support for potential TOOLBAR
 */
    void
gui_mac_doInContentClick(EventRecord *theEvent, WindowPtr whichWindow)
{
    Point		thePoint;
    int_u		vimModifiers;
    short		thePortion;
    ControlHandle	theControl;
    int			vimMouseButton;
    short		dblClick;

    thePoint = theEvent->where;
    GlobalToLocal(&thePoint);
    SelectWindow(whichWindow);

    thePortion = FindControl(thePoint, whichWindow, &theControl);

    if (theControl != NUL)
    {
	// We hit a scrollbar

	if (thePortion != kControlIndicatorPart)
	{
	    dragged_sb = theControl;
	    TrackControl(theControl, thePoint, gScrollAction);
	    dragged_sb = NULL;
	}
	else
	{
	    dragged_sb = theControl;
#if 1
	    TrackControl(theControl, thePoint, gScrollDrag);
#else
	    TrackControl(theControl, thePoint, NULL);
#endif
	    // pass 0 as the part to tell gui_mac_drag_thumb, that the mouse
	    // button has been released
	    gui_mac_drag_thumb(theControl, 0); // Should it be thePortion ? (Dany)
	    dragged_sb = NULL;
	}
    }
    else
    {
	// We are inside the contents

	// Convert the CTRL, OPTION, SHIFT and CMD key
	vimModifiers = EventModifiers2VimMouseModifiers(theEvent->modifiers);

	// Defaults to MOUSE_LEFT as there's only one mouse button
	vimMouseButton = MOUSE_LEFT;

	// Convert the CTRL_MOUSE_LEFT to MOUSE_RIGHT
	// TODO: NEEDED?
	clickIsPopup = FALSE;

	if (mouse_model_popup() && IsShowContextualMenuClick(theEvent))
	{
	    vimMouseButton = MOUSE_RIGHT;
	    vimModifiers &= ~MOUSE_CTRL;
	    clickIsPopup = TRUE;
	}

	// Is it a double click ?
	dblClick = ((theEvent->when - lastMouseTick) < GetDblTime());

	// Send the mouse click to Vim
	gui_send_mouse_event(vimMouseButton, thePoint.h,
					  thePoint.v, dblClick, vimModifiers);

	// Create the rectangle around the cursor to detect
	// the mouse dragging
#if 0
	// TODO: Do we need to this even for the contextual menu?
	// It may be require for popup_setpos, but for popup?
	if (vimMouseButton == MOUSE_LEFT)
#endif
	{
	    SetRect(&dragRect, FILL_X(X_2_COL(thePoint.h)),
				FILL_Y(Y_2_ROW(thePoint.v)),
				FILL_X(X_2_COL(thePoint.h)+1),
				FILL_Y(Y_2_ROW(thePoint.v)+1));

	    dragRectEnbl = TRUE;
	    dragRectControl = kCreateRect;
	}
    }
}

/*
 * Handle the click in the titlebar (to move the window)
 */
    void
gui_mac_doInDragClick(Point where, WindowPtr whichWindow)
{
    Rect	movingLimits;
    Rect	*movingLimitsPtr = &movingLimits;

    // TODO: may try to prevent move outside screen?
    movingLimitsPtr = GetRegionBounds(GetGrayRgn(), &movingLimits);
    DragWindow(whichWindow, where, movingLimitsPtr);
}

/*
 * Handle the click in the grow box
 */
    void
gui_mac_doInGrowClick(Point where, WindowPtr whichWindow)
{

    long	    newSize;
    unsigned short  newWidth;
    unsigned short  newHeight;
    Rect	    resizeLimits;
    Rect	    *resizeLimitsPtr = &resizeLimits;
    Rect	    NewContentRect;

    resizeLimitsPtr = GetRegionBounds(GetGrayRgn(), &resizeLimits);

    // Set the minimum size
    // TODO: Should this come from Vim?
    resizeLimits.top = 100;
    resizeLimits.left = 100;

    newSize = ResizeWindow(whichWindow, where, &resizeLimits, &NewContentRect);
    newWidth  = NewContentRect.right - NewContentRect.left;
    newHeight = NewContentRect.bottom - NewContentRect.top;
    gui_resize_shell(newWidth, newHeight);
    gui_mch_set_bg_color(gui.back_pixel);
    gui_set_shellsize(TRUE, FALSE, RESIZE_BOTH);
}

/*
 * Handle the click in the zoom box
 */
    static void
gui_mac_doInZoomClick(EventRecord *theEvent, WindowPtr whichWindow)
{
    Rect	r;
    Point	p;
    short	thePart;

    // ideal width is current
    p.h = Columns * gui.char_width + 2 * gui.border_offset;
    if (gui.which_scrollbars[SBAR_LEFT])
	p.h += gui.scrollbar_width;
    if (gui.which_scrollbars[SBAR_RIGHT])
	p.h += gui.scrollbar_width;
    // ideal height is as high as we can get
    p.v = 15 * 1024;

    thePart = IsWindowInStandardState(whichWindow, &p, &r)
						       ? inZoomIn : inZoomOut;

    if (!TrackBox(whichWindow, theEvent->where, thePart))
	return;

    // use returned width
    p.h = r.right - r.left;
    // adjust returned height
    p.v = r.bottom - r.top - 2 * gui.border_offset;
    if (gui.which_scrollbars[SBAR_BOTTOM])
	p.v -= gui.scrollbar_height;
    p.v -= p.v % gui.char_height;
    p.v += 2 * gui.border_width;
    if (gui.which_scrollbars[SBAR_BOTTOM])
	p.v += gui.scrollbar_height;

    ZoomWindowIdeal(whichWindow, thePart, &p);

    GetWindowBounds(whichWindow, kWindowContentRgn, &r);
    gui_resize_shell(r.right - r.left, r.bottom - r.top);
    gui_mch_set_bg_color(gui.back_pixel);
    gui_set_shellsize(TRUE, FALSE, RESIZE_BOTH);
}

/*
 * ------------------------------------------------------------
 * MacOS Event Handling procedure
 * ------------------------------------------------------------
 */

/*
 * Handle the Update Event
 */

    void
gui_mac_doUpdateEvent(EventRecord *event)
{
    WindowPtr	whichWindow;
    GrafPtr	savePort;
    RgnHandle	updateRgn;
    Rect	updateRect;
    Rect	*updateRectPtr;
    Rect	rc;
    Rect	growRect;
    RgnHandle	saveRgn;


    updateRgn = NewRgn();
    if (updateRgn == NULL)
	return;

    // This could be done by the caller as we
    // don't require anything else out of the event
    whichWindow = (WindowPtr) event->message;

    // Save Current Port
    GetPort(&savePort);

    // Select the Window's Port
    SetPortWindowPort(whichWindow);

    // Let's update the window
      BeginUpdate(whichWindow);
	// Redraw the biggest rectangle covering the area
	// to be updated.
	GetPortVisibleRegion(GetWindowPort(whichWindow), updateRgn);
# if 0
	// Would be more appropriate to use the following but doesn't
	// seem to work under MacOS X (Dany)
	GetWindowRegion(whichWindow, kWindowUpdateRgn, updateRgn);
# endif

	// Use the HLock useless in Carbon? Is it harmful?
	HLock((Handle) updateRgn);

	  updateRectPtr = GetRegionBounds(updateRgn, &updateRect);
# if 0
	  // Code from original Carbon Port (using GetWindowRegion.
	  // I believe the UpdateRgn is already in local (Dany)
	  GlobalToLocal(&topLeft(updateRect)); // preCarbon?
	  GlobalToLocal(&botRight(updateRect));
# endif
	  // Update the content (i.e. the text)
	  gui_redraw(updateRectPtr->left, updateRectPtr->top,
		      updateRectPtr->right - updateRectPtr->left,
		      updateRectPtr->bottom   - updateRectPtr->top);
	  // Clear the border areas if needed
	  gui_mch_set_bg_color(gui.back_pixel);
	  if (updateRectPtr->left < FILL_X(0))
	  {
	    SetRect(&rc, 0, 0, FILL_X(0), FILL_Y(Rows));
	    EraseRect(&rc);
	  }
	  if (updateRectPtr->top < FILL_Y(0))
	  {
	    SetRect(&rc, 0, 0, FILL_X(Columns), FILL_Y(0));
	    EraseRect(&rc);
	  }
	  if (updateRectPtr->right > FILL_X(Columns))
	  {
	    SetRect(&rc, FILL_X(Columns), 0,
			   FILL_X(Columns) + gui.border_offset, FILL_Y(Rows));
	    EraseRect(&rc);
	  }
	  if (updateRectPtr->bottom > FILL_Y(Rows))
	  {
	    SetRect(&rc, 0, FILL_Y(Rows), FILL_X(Columns) + gui.border_offset,
					    FILL_Y(Rows) + gui.border_offset);
	    EraseRect(&rc);
	  }
	HUnlock((Handle) updateRgn);
	DisposeRgn(updateRgn);

	// Update scrollbars
	DrawControls(whichWindow);

	// Update the GrowBox
	// Taken from FAQ 33-27
	saveRgn = NewRgn();
	GetWindowBounds(whichWindow, kWindowGrowRgn, &growRect);
	GetClip(saveRgn);
	ClipRect(&growRect);
	DrawGrowIcon(whichWindow);
	SetClip(saveRgn);
	DisposeRgn(saveRgn);
      EndUpdate(whichWindow);

    // Restore original Port
    SetPort(savePort);
}

/*
 * Handle the activate/deactivate event
 * (apply to a window)
 */
    void
gui_mac_doActivateEvent(EventRecord *event)
{
    WindowPtr	whichWindow;

    whichWindow = (WindowPtr) event->message;
    // Dim scrollbars
    if (whichWindow == gui.VimWindow)
    {
	ControlRef rootControl;
	GetRootControl(gui.VimWindow, &rootControl);
	if ((event->modifiers) & activeFlag)
	    ActivateControl(rootControl);
	else
	    DeactivateControl(rootControl);
    }

    // Activate
    gui_focus_change((event->modifiers) & activeFlag);
}


/*
 * Handle the suspend/resume event
 * (apply to the application)
 */
    void
gui_mac_doSuspendEvent(EventRecord *event)
{
    // The frontmost application just changed

    // NOTE: the suspend may happen before the deactivate
    //       seen on MacOS X

    // May not need to change focus as the window will
    // get an activate/deactivate event
    if (event->message & 1)
	// Resume
	gui_focus_change(TRUE);
    else
	// Suspend
	gui_focus_change(FALSE);
}

/*
 * Handle the key
 */
#ifdef USE_CARBONKEYHANDLER
    static pascal OSStatus
gui_mac_handle_window_activate(
	EventHandlerCallRef nextHandler,
	EventRef	    theEvent,
	void		    *data)
{
    UInt32 eventClass = GetEventClass(theEvent);
    UInt32 eventKind  = GetEventKind(theEvent);

    if (eventClass == kEventClassWindow)
    {
	switch (eventKind)
	{
	    case kEventWindowActivated:
		im_on_window_switch(TRUE);
		return noErr;

	    case kEventWindowDeactivated:
		im_on_window_switch(FALSE);
		return noErr;
	}
    }

    return eventNotHandledErr;
}

    static pascal OSStatus
gui_mac_handle_text_input(
	EventHandlerCallRef nextHandler,
	EventRef	    theEvent,
	void		    *data)
{
    UInt32 eventClass = GetEventClass(theEvent);
    UInt32 eventKind  = GetEventKind(theEvent);

    if (eventClass != kEventClassTextInput)
	return eventNotHandledErr;

    if ((kEventTextInputUpdateActiveInputArea != eventKind) &&
	(kEventTextInputUnicodeForKeyEvent    != eventKind) &&
	(kEventTextInputOffsetToPos	      != eventKind) &&
	(kEventTextInputPosToOffset	      != eventKind) &&
	(kEventTextInputGetSelectedText       != eventKind))
	      return eventNotHandledErr;

    switch (eventKind)
    {
    case kEventTextInputUpdateActiveInputArea:
	return gui_mac_update_input_area(nextHandler, theEvent);
    case kEventTextInputUnicodeForKeyEvent:
	return gui_mac_unicode_key_event(nextHandler, theEvent);

    case kEventTextInputOffsetToPos:
    case kEventTextInputPosToOffset:
    case kEventTextInputGetSelectedText:
	break;
    }

    return eventNotHandledErr;
}

    static pascal
OSStatus gui_mac_update_input_area(
	EventHandlerCallRef nextHandler,
	EventRef	    theEvent)
{
    return eventNotHandledErr;
}

static int dialog_busy = FALSE;	    // TRUE when gui_mch_dialog() wants the
				    // keys

# define INLINE_KEY_BUFFER_SIZE 80
    static pascal OSStatus
gui_mac_unicode_key_event(
	EventHandlerCallRef nextHandler,
	EventRef	    theEvent)
{
    // Multibyte-friendly key event handler
    OSStatus	err = -1;
    UInt32	actualSize;
    UniChar	*text;
    char_u	result[INLINE_KEY_BUFFER_SIZE];
    short	len = 0;
    UInt32	key_sym;
    char	charcode;
    int		key_char;
    UInt32	modifiers, vimModifiers;
    size_t	encLen;
    char_u	*to = NULL;
    Boolean	isSpecial = FALSE;
    int		i;
    EventRef	keyEvent;

    // Mask the mouse (as per user setting)
    if (p_mh)
	ObscureCursor();

    // Don't use the keys when the dialog wants them.
    if (dialog_busy)
	return eventNotHandledErr;

    if (noErr != GetEventParameter(theEvent, kEventParamTextInputSendText,
		typeUnicodeText, NULL, 0, &actualSize, NULL))
	return eventNotHandledErr;

    text = alloc(actualSize);
    if (!text)
	return eventNotHandledErr;

    err = GetEventParameter(theEvent, kEventParamTextInputSendText,
	    typeUnicodeText, NULL, actualSize, NULL, text);
    require_noerr(err, done);

    err = GetEventParameter(theEvent, kEventParamTextInputSendKeyboardEvent,
	    typeEventRef, NULL, sizeof(EventRef), NULL, &keyEvent);
    require_noerr(err, done);

    err = GetEventParameter(keyEvent, kEventParamKeyModifiers,
	    typeUInt32, NULL, sizeof(UInt32), NULL, &modifiers);
    require_noerr(err, done);

    err = GetEventParameter(keyEvent, kEventParamKeyCode,
	    typeUInt32, NULL, sizeof(UInt32), NULL, &key_sym);
    require_noerr(err, done);

    err = GetEventParameter(keyEvent, kEventParamKeyMacCharCodes,
	    typeChar, NULL, sizeof(char), NULL, &charcode);
    require_noerr(err, done);

#ifndef USE_CMD_KEY
    if (modifiers & cmdKey)
	goto done;  // Let system handle Cmd+...
#endif

    key_char = charcode;
    vimModifiers = EventModifiers2VimModifiers(modifiers);

    // Find the special key (eg., for cursor keys)
    if (actualSize <= sizeof(UniChar) &&
	    ((text[0] < 0x20) || (text[0] == 0x7f)))
    {
	for (i = 0; special_keys[i].key_sym != (KeySym)0; ++i)
	    if (special_keys[i].key_sym == key_sym)
	    {
		key_char = TO_SPECIAL(special_keys[i].vim_code0,
			special_keys[i].vim_code1);
		key_char = simplify_key(key_char,
			(int *)&vimModifiers);
		isSpecial = TRUE;
		break;
	    }
    }

    // Intercept CMD-. and CTRL-c
    if (((modifiers & controlKey) && key_char == 'c') ||
	    ((modifiers & cmdKey) && key_char == '.'))
	got_int = TRUE;

    if (!isSpecial)
    {
	// remove SHIFT for keys that are already shifted, e.g.,
	// '(' and '*'
	if (key_char < 0x100 && !isalpha(key_char) && isprint(key_char))
	    vimModifiers &= ~MOD_MASK_SHIFT;

	// remove CTRL from keys that already have it
	if (key_char < 0x20)
	    vimModifiers &= ~MOD_MASK_CTRL;

	// don't process unicode characters here
	if (!IS_SPECIAL(key_char))
	{
	    // Following code to simplify and consolidate vimModifiers
	    // taken liberally from gui_w48.c
	    key_char = simplify_key(key_char, (int *)&vimModifiers);

	    // Interpret META, include SHIFT, etc.
	    key_char = extract_modifiers(key_char, (int *)&vimModifiers,
		    TRUE, NULL);
	    if (key_char == CSI)
		key_char = K_CSI;

	    if (IS_SPECIAL(key_char))
		isSpecial = TRUE;
	}
    }

    if (vimModifiers)
    {
	result[len++] = CSI;
	result[len++] = KS_MODIFIER;
	result[len++] = vimModifiers;
    }

    if (isSpecial && IS_SPECIAL(key_char))
    {
	result[len++] = CSI;
	result[len++] = K_SECOND(key_char);
	result[len++] = K_THIRD(key_char);
    }
    else
    {
	encLen = actualSize;
	to = mac_utf16_to_enc(text, actualSize, &encLen);
	if (to)
	{
	    // This is basically add_to_input_buf_csi()
	    for (i = 0; i < encLen && len < (INLINE_KEY_BUFFER_SIZE-1); ++i)
	    {
		result[len++] = to[i];
		if (to[i] == CSI)
		{
		    result[len++] = KS_EXTRA;
		    result[len++] = (int)KE_CSI;
		}
	    }
	    vim_free(to);
	}
    }

    add_to_input_buf(result, len);
    err = noErr;

done:
    vim_free(text);
    if (err == noErr)
    {
	// Fake event to wake up WNE (required to get
	// key repeat working
	PostEvent(keyUp, 0);
	return noErr;
    }

    return eventNotHandledErr;
}
#else
    void
gui_mac_doKeyEvent(EventRecord *theEvent)
{
    // TODO: add support for COMMAND KEY
    long		menu;
    unsigned char	string[20];
    short		num, i;
    short		len = 0;
    KeySym		key_sym;
    int			key_char;
    int			modifiers;
    int			simplify = FALSE;

    // Mask the mouse (as per user setting)
    if (p_mh)
	ObscureCursor();

    // Get the key code and its ASCII representation
    key_sym = ((theEvent->message & keyCodeMask) >> 8);
    key_char = theEvent->message & charCodeMask;
    num = 1;

    // Intercept CTRL-C
    if (theEvent->modifiers & controlKey)
    {
	if (key_char == Ctrl_C && ctrl_c_interrupts)
	    got_int = TRUE;
	else if ((theEvent->modifiers & ~(controlKey|shiftKey)) == 0
		&& (key_char == '2' || key_char == '6'))
	{
	    // CTRL-^ and CTRL-@ don't work in the normal way.
	    if (key_char == '2')
		key_char = Ctrl_AT;
	    else
		key_char = Ctrl_HAT;
	    theEvent->modifiers = 0;
	}
    }

    // Intercept CMD-.
    if (theEvent->modifiers & cmdKey)
	if (key_char == '.')
	    got_int = TRUE;

    // Handle command key as per menu
    // TODO: should override be allowed? Require YAO or could use 'winaltkey'
    if (theEvent->modifiers & cmdKey)
	// Only accept CMD alone or with CAPLOCKS and the mouse button.
	// Why the mouse button?
	if ((theEvent->modifiers & (~(cmdKey | btnState | alphaLock))) == 0)
	{
	    menu = MenuKey(key_char);
	    if (HiWord(menu))
	    {
		gui_mac_handle_menu(menu);
		return;
	    }
	}

    // Convert the modifiers
    modifiers = EventModifiers2VimModifiers(theEvent->modifiers);


    // Handle special keys.
#if 0
    // Why has this been removed?
    if	(!(theEvent->modifiers & (cmdKey | controlKey | rightControlKey)))
#endif
    {
	// Find the special key (for non-printable keyt_char)
	if  ((key_char < 0x20) || (key_char == 0x7f))
	    for (i = 0; special_keys[i].key_sym != (KeySym)0; i++)
		if (special_keys[i].key_sym == key_sym)
		{
# if 0
		    // We currently don't have not so special key
		    if (special_keys[i].vim_code1 == NUL)
			key_char = special_keys[i].vim_code0;
		    else
# endif
			key_char = TO_SPECIAL(special_keys[i].vim_code0,
						special_keys[i].vim_code1);
		    simplify = TRUE;
		    break;
		}
    }

    // For some keys the modifier is included in the char itself.
    if (simplify || key_char == TAB || key_char == ' ')
	key_char = simplify_key(key_char, &modifiers);

    // Add the modifier to the input bu if needed
    // Do not want SHIFT-A or CTRL-A with modifier
    if (!IS_SPECIAL(key_char)
	    && key_sym != vk_Space
	    && key_sym != vk_Tab
	    && key_sym != vk_Return
	    && key_sym != vk_Enter
	    && key_sym != vk_Esc)
    {
#if 1
    // Clear modifiers when only one modifier is set
	if ((modifiers == MOD_MASK_SHIFT)
		|| (modifiers == MOD_MASK_CTRL)
		|| (modifiers == MOD_MASK_ALT))
	    modifiers = 0;
#else
	if (modifiers & MOD_MASK_CTRL)
	    modifiers = modifiers & ~MOD_MASK_CTRL;
	if (modifiers & MOD_MASK_ALT)
	    modifiers = modifiers & ~MOD_MASK_ALT;
	if (modifiers & MOD_MASK_SHIFT)
	    modifiers = modifiers & ~MOD_MASK_SHIFT;
#endif
    }
	if (modifiers)
	{
	    string[len++] = CSI;
	    string[len++] = KS_MODIFIER;
	    string[len++] = modifiers;
	}

	if (IS_SPECIAL(key_char))
	{
	    string[len++] = CSI;
	    string[len++] = K_SECOND(key_char);
	    string[len++] = K_THIRD(key_char);
	}
	else
	{
	    // Convert characters when needed (e.g., from MacRoman to latin1).
	    // This doesn't work for the NUL byte.
	    if (input_conv.vc_type != CONV_NONE && key_char > 0)
	    {
		char_u	from[2], *to;
		int	l;

		from[0] = key_char;
		from[1] = NUL;
		l = 1;
		to = string_convert(&input_conv, from, &l);
		if (to != NULL)
		{
		    for (i = 0; i < l && len < 19; i++)
		    {
			if (to[i] == CSI)
			{
			    string[len++] = KS_EXTRA;
			    string[len++] = KE_CSI;
			}
			else
			    string[len++] = to[i];
		    }
		    vim_free(to);
		}
		else
		    string[len++] = key_char;
	    }
	    else
		string[len++] = key_char;
	}

	if (len == 1 && string[0] == CSI)
	{
	    // Turn CSI into K_CSI.
	    string[ len++ ] = KS_EXTRA;
	    string[ len++ ] = KE_CSI;
	}

    add_to_input_buf(string, len);
}
#endif

/*
 * Handle MouseClick
 */
    void
gui_mac_doMouseDownEvent(EventRecord *theEvent)
{
    short		thePart;
    WindowPtr		whichWindow;

    thePart = FindWindow(theEvent->where, &whichWindow);

#ifdef FEAT_GUI_TABLINE
    // prevent that the vim window size changes if it's activated by a
    // click into the tab pane
    if (whichWindow == drawer)
	return;
#endif

    switch (thePart)
    {
	case (inDesk):
	    // TODO: what to do?
	    break;

	case (inMenuBar):
	    gui_mac_handle_menu(MenuSelect(theEvent->where));
	    break;

	case (inContent):
	    gui_mac_doInContentClick(theEvent, whichWindow);
	    break;

	case (inDrag):
	    gui_mac_doInDragClick(theEvent->where, whichWindow);
	    break;

	case (inGrow):
	    gui_mac_doInGrowClick(theEvent->where, whichWindow);
	    break;

	case (inGoAway):
	    if (TrackGoAway(whichWindow, theEvent->where))
		gui_shell_closed();
	    break;

	case (inZoomIn):
	case (inZoomOut):
	    gui_mac_doInZoomClick(theEvent, whichWindow);
	    break;
    }
}

/*
 * Handle MouseMoved
 * [this event is a moving in and out of a region]
 */
    void
gui_mac_doMouseMovedEvent(EventRecord *event)
{
    Point   thePoint;
    int_u   vimModifiers;

    thePoint = event->where;
    GlobalToLocal(&thePoint);
    vimModifiers = EventModifiers2VimMouseModifiers(event->modifiers);

    if (!Button())
	gui_mouse_moved(thePoint.h, thePoint.v);
    else
	if (!clickIsPopup)
	    gui_send_mouse_event(MOUSE_DRAG, thePoint.h,
					     thePoint.v, FALSE, vimModifiers);

    // Reset the region from which we move in and out
    SetRect(&dragRect, FILL_X(X_2_COL(thePoint.h)),
			FILL_Y(Y_2_ROW(thePoint.v)),
			FILL_X(X_2_COL(thePoint.h)+1),
			FILL_Y(Y_2_ROW(thePoint.v)+1));

    if (dragRectEnbl)
	dragRectControl = kCreateRect;

}

/*
 * Handle the mouse release
 */
    void
gui_mac_doMouseUpEvent(EventRecord *theEvent)
{
    Point   thePoint;
    int_u   vimModifiers;

    // TODO: Properly convert the Contextual menu mouse-up
    //       Potential source of the double menu
    lastMouseTick = theEvent->when;
    dragRectEnbl = FALSE;
    dragRectControl = kCreateEmpty;
    thePoint = theEvent->where;
    GlobalToLocal(&thePoint);

    vimModifiers = EventModifiers2VimMouseModifiers(theEvent->modifiers);
    if (clickIsPopup)
    {
	vimModifiers &= ~MOUSE_CTRL;
	clickIsPopup = FALSE;
    }
    gui_send_mouse_event(MOUSE_RELEASE, thePoint.h, thePoint.v, FALSE, vimModifiers);
}

    static pascal OSStatus
gui_mac_mouse_wheel(EventHandlerCallRef nextHandler, EventRef theEvent,
								   void *data)
{
    Point	point;
    Rect	bounds;
    UInt32	mod;
    SInt32	delta;
    int_u	vim_mod;
    EventMouseWheelAxis axis;

    if (noErr == GetEventParameter(theEvent, kEventParamMouseWheelAxis,
			  typeMouseWheelAxis, NULL, sizeof(axis), NULL, &axis)
	    && axis != kEventMouseWheelAxisY)
	goto bail; // Vim only does up-down scrolling

    if (noErr != GetEventParameter(theEvent, kEventParamMouseWheelDelta,
			      typeSInt32, NULL, sizeof(SInt32), NULL, &delta))
	goto bail;
    if (noErr != GetEventParameter(theEvent, kEventParamMouseLocation,
			      typeQDPoint, NULL, sizeof(Point), NULL, &point))
	goto bail;
    if (noErr != GetEventParameter(theEvent, kEventParamKeyModifiers,
				typeUInt32, NULL, sizeof(UInt32), NULL, &mod))
	goto bail;

    vim_mod = 0;
    if (mod & shiftKey)
	vim_mod |= MOUSE_SHIFT;
    if (mod & controlKey)
	vim_mod |= MOUSE_CTRL;
    if (mod & optionKey)
	vim_mod |= MOUSE_ALT;

    if (noErr == GetWindowBounds(gui.VimWindow, kWindowContentRgn, &bounds))
    {
	point.h -= bounds.left;
	point.v -= bounds.top;
    }

    gui_send_mouse_event((delta > 0) ? MOUSE_4 : MOUSE_5,
					    point.h, point.v, FALSE, vim_mod);

    // post a bogus event to wake up WaitNextEvent
    PostEvent(keyUp, 0);

    return noErr;

bail:
    /*
     * when we fail give any additional callback handler a chance to perform
     * its actions
     */
    return CallNextEventHandler(nextHandler, theEvent);
}

     void
gui_mch_mousehide(int hide)
{
    // TODO
}

#if 0

/*
 * This would be the normal way of invoking the contextual menu
 * but the Vim API doesn't seem to a support a request to get
 * the menu that we should display
 */
    void
gui_mac_handle_contextual_menu(EventRecord *event)
{
/*
 *  Clone PopUp to use menu
 *  Create a object descriptor for the current selection
 *  Call the procedure
 */

//  Call to Handle Popup
    OSStatus status = ContextualMenuSelect(CntxMenu, event->where, false, kCMHelpItemNoHelp, "", NULL, &CntxType, &CntxMenuID, &CntxMenuItem);

    if (status != noErr)
	return;

    if (CntxType == kCMMenuItemSelected)
    {
	// Handle the menu CntxMenuID, CntxMenuItem
	// The submenu can be handle directly by gui_mac_handle_menu
	// But what about the current menu, is the many changed by ContextualMenuSelect
	gui_mac_handle_menu((CntxMenuID << 16) + CntxMenuItem);
    }
    else if (CntxMenuID == kCMShowHelpSelected)
    {
	// Should come up with the help
    }

}
#endif

/*
 * Handle menubar selection
 */
    void
gui_mac_handle_menu(long menuChoice)
{
    short	menu = HiWord(menuChoice);
    short	item = LoWord(menuChoice);
    vimmenu_T	*theVimMenu = root_menu;

    if (menu == 256)  // TODO: use constant or gui.xyz
    {
	if (item == 1)
	    gui_mch_beep(); // TODO: Popup dialog or do :intro
    }
    else if (item != 0)
    {
	theVimMenu = gui_mac_get_vim_menu(menu, item, root_menu);

	if (theVimMenu)
	    gui_menu_cb(theVimMenu);
    }
    HiliteMenu(0);
}

/*
 * Dispatch the event to proper handler
 */

    void
gui_mac_handle_event(EventRecord *event)
{
    OSErr	error;

    // Handle contextual menu right now (if needed)
    if (IsShowContextualMenuClick(event))
    {
# if 0
	gui_mac_handle_contextual_menu(event);
# else
	gui_mac_doMouseDownEvent(event);
# endif
	return;
    }

    // Handle normal event
    switch (event->what)
    {
#ifndef USE_CARBONKEYHANDLER
	case (keyDown):
	case (autoKey):
	    gui_mac_doKeyEvent(event);
	    break;
#endif
	case (keyUp):
	    // We don't care about when the key is released
	    break;

	case (mouseDown):
	    gui_mac_doMouseDownEvent(event);
	    break;

	case (mouseUp):
	    gui_mac_doMouseUpEvent(event);
	    break;

	case (updateEvt):
	    gui_mac_doUpdateEvent(event);
	    break;

	case (diskEvt):
	    // We don't need special handling for disk insertion
	    break;

	case (activateEvt):
	    gui_mac_doActivateEvent(event);
	    break;

	case (osEvt):
	    switch ((event->message >> 24) & 0xFF)
	    {
		case (0xFA): // mouseMovedMessage
		    gui_mac_doMouseMovedEvent(event);
		    break;
		case (0x01): // suspendResumeMessage
		    gui_mac_doSuspendEvent(event);
		    break;
	    }
	    break;

#ifdef USE_AEVENT
	case (kHighLevelEvent):
	    // Someone's talking to us, through AppleEvents
	    error = AEProcessAppleEvent(event); // TODO: Error Handling
	    break;
#endif
    }
}

/*
 * ------------------------------------------------------------
 * Unknown Stuff
 * ------------------------------------------------------------
 */


    GuiFont
gui_mac_find_font(char_u *font_name)
{
    char_u	c;
    char_u	*p;
    char_u	pFontName[256];
    Str255	systemFontname;
    short	font_id;
    short	size=9;
    GuiFont	font;
#if 0
    char_u      *fontNamePtr;
#endif

    for (p = font_name; ((*p != 0) && (*p != ':')); p++)
	;

    c = *p;
    *p = 0;

#if 1
    STRCPY(&pFontName[1], font_name);
    pFontName[0] = STRLEN(font_name);
    *p = c;

    // Get the font name, minus the style suffix (:h, etc)
    char_u fontName[256];
    char_u *styleStart = vim_strchr(font_name, ':');
    size_t fontNameLen = styleStart ? styleStart - font_name : STRLEN(fontName);
    vim_strncpy(fontName, font_name, fontNameLen);

    ATSUFontID fontRef;
    FMFontStyle fontStyle;
    font_id = 0;

    if (ATSUFindFontFromName(&pFontName[1], pFontName[0], kFontFullName,
		kFontMacintoshPlatform, kFontNoScriptCode, kFontNoLanguageCode,
		&fontRef) == noErr)
    {
	if (FMGetFontFamilyInstanceFromFont(fontRef, &font_id, &fontStyle) != noErr)
	    font_id = 0;
    }

    if (font_id == 0)
    {
	/*
	 * Try again, this time replacing underscores in the font name
	 * with spaces (:set guifont allows the two to be used
	 * interchangeably; the Font Manager doesn't).
	 */
	int i, changed = FALSE;

	for (i = pFontName[0]; i > 0; --i)
	{
	    if (pFontName[i] == '_')
	    {
		pFontName[i] = ' ';
		changed = TRUE;
	    }
	}
	if (changed)
	    if (ATSUFindFontFromName(&pFontName[1], pFontName[0],
			kFontFullName, kFontNoPlatformCode, kFontNoScriptCode,
			kFontNoLanguageCode, &fontRef) == noErr)
	    {
		if (FMGetFontFamilyInstanceFromFont(fontRef, &font_id, &fontStyle) != noErr)
		    font_id = 0;
	    }
    }

#else
    // name = C2Pascal_save(menu->dname);
    fontNamePtr = C2Pascal_save_and_remove_backslash(font_name);

    GetFNum(fontNamePtr, &font_id);
#endif


    if (font_id == 0)
    {
	// Oups, the system font was it the one the user want

	if (FMGetFontFamilyName(systemFont, systemFontname) != noErr)
	    return NOFONT;
	if (!EqualString(pFontName, systemFontname, false, false))
	    return NOFONT;
    }
    if (*p == ':')
    {
	p++;
	// Set the values found after ':'
	while (*p)
	{
	    switch (*p++)
	    {
		case 'h':
		    size = points_to_pixels(p, &p, TRUE);
		    break;
		    /*
		     * TODO: Maybe accept width and styles
		     */
	    }
	    while (*p == ':')
		p++;
	}
    }

    if (size < 1)
	size = 1;   // Avoid having a size of 0 with system font

    font = (size << 16) + ((long) font_id & 0xFFFF);

    return font;
}

/*
 * ------------------------------------------------------------
 * GUI_MCH functionality
 * ------------------------------------------------------------
 */

/*
 * Parse the GUI related command-line arguments.  Any arguments used are
 * deleted from argv, and *argc is decremented accordingly.  This is called
 * when vim is started, whether or not the GUI has been started.
 */
    void
gui_mch_prepare(int *argc, char **argv)
{
    // TODO: Move most of this stuff toward gui_mch_init
#ifdef USE_EXE_NAME
    FSSpec	applDir;
# ifndef USE_FIND_BUNDLE_PATH
    short	applVRefNum;
    long	applDirID;
    Str255	volName;
# else
    ProcessSerialNumber psn;
    FSRef	applFSRef;
# endif
#endif

#if 0
    InitCursor();

    RegisterAppearanceClient();

#ifdef USE_AEVENT
    (void) InstallAEHandlers();
#endif

    pomme = NewMenu(256, "\p\024"); // 0x14= = Apple Menu

    AppendMenu(pomme, "\pAbout VIM");

    InsertMenu(pomme, 0);

    DrawMenuBar();


#ifndef USE_OFFSETED_WINDOW
    SetRect(&windRect, 10, 48, 10+80*7 + 16, 48+24*11);
#else
    SetRect(&windRect, 300, 40, 300+80*7 + 16, 40+24*11);
#endif


    CreateNewWindow(kDocumentWindowClass,
		kWindowResizableAttribute | kWindowCollapseBoxAttribute,
		&windRect, &gui.VimWindow);
    SetPortWindowPort(gui.VimWindow);

    gui.char_width = 7;
    gui.char_height = 11;
    gui.char_ascent = 6;
    gui.num_rows = 24;
    gui.num_cols = 80;
    gui.in_focus = TRUE; // For the moment -> syn. of front application

    gScrollAction = NewControlActionUPP(gui_mac_scroll_action);
    gScrollDrag   = NewControlActionUPP(gui_mac_drag_thumb);

    dragRectEnbl = FALSE;
    dragRgn = NULL;
    dragRectControl = kCreateEmpty;
    cursorRgn = NewRgn();
#endif
#ifdef USE_EXE_NAME
# ifndef USE_FIND_BUNDLE_PATH
    HGetVol(volName, &applVRefNum, &applDirID);
    // TN2015: mention a possible bad VRefNum
    FSMakeFSSpec(applVRefNum, applDirID, "\p", &applDir);
# else
    // OSErr GetApplicationBundleFSSpec(FSSpecPtr theFSSpecPtr)
    // of TN2015
    (void)GetCurrentProcess(&psn);
    // if (err != noErr) return err;

    (void)GetProcessBundleLocation(&psn, &applFSRef);
    // if (err != noErr) return err;

    (void)FSGetCatalogInfo(&applFSRef, kFSCatInfoNone, NULL, NULL, &applDir, NULL);

    // This technic return NIL when we disallow_gui
# endif
    exe_name = FullPathFromFSSpec_save(applDir);
#endif
}

#ifndef ALWAYS_USE_GUI
/*
 * Check if the GUI can be started.  Called before gvimrc is sourced.
 * Return OK or FAIL.
 */
    int
gui_mch_init_check(void)
{
    // TODO: For MacOS X find a way to return FAIL, if the user logged in
    // using the >console
    if (disallow_gui) // see main.c for reason to disallow
	return FAIL;
    return OK;
}
#endif

    static OSErr
receiveHandler(WindowRef theWindow, void *handlerRefCon, DragRef theDrag)
{
    int		x, y;
    int_u	modifiers;
    char_u	**fnames = NULL;
    int		count;
    int		i, j;

    // Get drop position, modifiers and count of items
    {
	Point	point;
	SInt16	mouseUpModifiers;
	UInt16	countItem;

	GetDragMouse(theDrag, &point, NULL);
	GlobalToLocal(&point);
	x = point.h;
	y = point.v;
	GetDragModifiers(theDrag, NULL, NULL, &mouseUpModifiers);
	modifiers = EventModifiers2VimMouseModifiers(mouseUpModifiers);
	CountDragItems(theDrag, &countItem);
	count = countItem;
    }

    fnames = ALLOC_MULT(char_u *, count);
    if (fnames == NULL)
	return dragNotAcceptedErr;

    // Get file names dropped
    for (i = j = 0; i < count; ++i)
    {
	DragItemRef	item;
	OSErr		err;
	Size		size;
	FlavorType	type = flavorTypeHFS;
	HFSFlavor	hfsFlavor;

	fnames[i] = NULL;
	GetDragItemReferenceNumber(theDrag, i + 1, &item);
	err = GetFlavorDataSize(theDrag, item, type, &size);
	if (err != noErr || size > sizeof(hfsFlavor))
	    continue;
	err = GetFlavorData(theDrag, item, type, &hfsFlavor, &size, 0);
	if (err != noErr)
	    continue;
	fnames[j++] = FullPathFromFSSpec_save(hfsFlavor.fileSpec);
    }
    count = j;

    gui_handle_drop(x, y, modifiers, fnames, count);

    // Fake mouse event to wake from stall
    PostEvent(mouseUp, 0);

    return noErr;
}

/*
 * Initialise the GUI.  Create all the windows, set up all the call-backs
 * etc.
 */
    int
gui_mch_init(void)
{
    // TODO: Move most of this stuff toward gui_mch_init
    Rect	    windRect;
    MenuHandle	    pomme;
    EventHandlerRef mouseWheelHandlerRef;
    EventTypeSpec   eventTypeSpec;
    ControlRef	    rootControl;

    if (Gestalt(gestaltSystemVersion, &gMacSystemVersion) != noErr)
	gMacSystemVersion = 0x1000; // TODO: Default to minimum sensible value

#if 1
    InitCursor();

    RegisterAppearanceClient();

#ifdef USE_AEVENT
    (void) InstallAEHandlers();
#endif

    pomme = NewMenu(256, "\p\024"); // 0x14= = Apple Menu

    AppendMenu(pomme, "\pAbout VIM");

    InsertMenu(pomme, 0);

    DrawMenuBar();


#ifndef USE_OFFSETED_WINDOW
    SetRect(&windRect, 10, 48, 10+80*7 + 16, 48+24*11);
#else
    SetRect(&windRect, 300, 40, 300+80*7 + 16, 40+24*11);
#endif

    gui.VimWindow = NewCWindow(nil, &windRect, "\pgVim on Macintosh", true,
			zoomDocProc,
			(WindowPtr)-1L, true, 0);
    CreateRootControl(gui.VimWindow, &rootControl);
    InstallReceiveHandler((DragReceiveHandlerUPP)receiveHandler,
	    gui.VimWindow, NULL);
    SetPortWindowPort(gui.VimWindow);

    gui.char_width = 7;
    gui.char_height = 11;
    gui.char_ascent = 6;
    gui.num_rows = 24;
    gui.num_cols = 80;
    gui.in_focus = TRUE; // For the moment -> syn. of front application

    gScrollAction = NewControlActionUPP(gui_mac_scroll_action);
    gScrollDrag   = NewControlActionUPP(gui_mac_drag_thumb);

    // Install Carbon event callbacks.
    (void)InstallFontPanelHandler();

    dragRectEnbl = FALSE;
    dragRgn = NULL;
    dragRectControl = kCreateEmpty;
    cursorRgn = NewRgn();
#endif
    // Display any pending error messages
    display_errors();

    // Get background/foreground colors from system
    // TODO: do the appropriate call to get real defaults
    gui.norm_pixel = 0x00000000;
    gui.back_pixel = 0x00FFFFFF;

    // Get the colors from the "Normal" group (set in syntax.c or in a vimrc
    // file).
    set_normal_colors();

    /*
     * Check that none of the colors are the same as the background color.
     * Then store the current values as the defaults.
     */
    gui_check_colors();
    gui.def_norm_pixel = gui.norm_pixel;
    gui.def_back_pixel = gui.back_pixel;

    // Get the colors for the highlight groups (gui_check_colors() might have
    // changed them)
    highlight_gui_started();

    /*
     * Setting the gui constants
     */
#ifdef FEAT_MENU
    gui.menu_height = 0;
#endif
    gui.scrollbar_height = gui.scrollbar_width = 15; // cheat 1 overlap
    gui.border_offset = gui.border_width = 2;

    // If Quartz-style text anti aliasing is available (see
    // gui_mch_draw_string() below), enable it for all font sizes.
    vim_setenv((char_u *)"QDTEXT_MINSIZE", (char_u *)"1");

    eventTypeSpec.eventClass = kEventClassMouse;
    eventTypeSpec.eventKind = kEventMouseWheelMoved;
    mouseWheelHandlerUPP = NewEventHandlerUPP(gui_mac_mouse_wheel);
    if (noErr != InstallApplicationEventHandler(mouseWheelHandlerUPP, 1,
				 &eventTypeSpec, NULL, &mouseWheelHandlerRef))
    {
	mouseWheelHandlerRef = NULL;
	DisposeEventHandlerUPP(mouseWheelHandlerUPP);
	mouseWheelHandlerUPP = NULL;
    }

#ifdef USE_CARBONKEYHANDLER
    InterfaceTypeList supportedServices = { kUnicodeDocument };
    NewTSMDocument(1, supportedServices, &gTSMDocument, 0);

    // We don't support inline input yet, use input window by default
    UseInputWindow(gTSMDocument, TRUE);

    // Should we activate the document by default?
    // ActivateTSMDocument(gTSMDocument);

    EventTypeSpec textEventTypes[] = {
	{ kEventClassTextInput, kEventTextInputUpdateActiveInputArea },
	{ kEventClassTextInput, kEventTextInputUnicodeForKeyEvent },
	{ kEventClassTextInput, kEventTextInputPosToOffset },
	{ kEventClassTextInput, kEventTextInputOffsetToPos },
    };

    keyEventHandlerUPP = NewEventHandlerUPP(gui_mac_handle_text_input);
    if (noErr != InstallApplicationEventHandler(keyEventHandlerUPP,
						NR_ELEMS(textEventTypes),
						textEventTypes, NULL, NULL))
    {
	DisposeEventHandlerUPP(keyEventHandlerUPP);
	keyEventHandlerUPP = NULL;
    }

    EventTypeSpec windowEventTypes[] = {
	{ kEventClassWindow, kEventWindowActivated },
	{ kEventClassWindow, kEventWindowDeactivated },
    };

    // Install window event handler to support TSMDocument activate and
    // deactivate
    winEventHandlerUPP = NewEventHandlerUPP(gui_mac_handle_window_activate);
    if (noErr != InstallWindowEventHandler(gui.VimWindow,
					   winEventHandlerUPP,
					   NR_ELEMS(windowEventTypes),
					   windowEventTypes, NULL, NULL))
    {
	DisposeEventHandlerUPP(winEventHandlerUPP);
	winEventHandlerUPP = NULL;
    }
#endif

#ifdef FEAT_GUI_TABLINE
    /*
     * Create the tabline
     */
    initialise_tabline();
#endif

    // TODO: Load bitmap if using TOOLBAR
    return OK;
}

/*
 * Called when the foreground or background color has been changed.
 */
    void
gui_mch_new_colors(void)
{
    // TODO:
    // This proc is called when Normal is set to a value
    // so what must be done? I don't know
}

/*
 * Open the GUI window which was created by a call to gui_mch_init().
 */
    int
gui_mch_open(void)
{
    ShowWindow(gui.VimWindow);

    if (gui_win_x != -1 && gui_win_y != -1)
	gui_mch_set_winpos(gui_win_x, gui_win_y);

    /*
     * Make the GUI the foreground process (in case it was launched
     * from the Terminal or via :gui).
     */
    {
	ProcessSerialNumber psn;
	if (GetCurrentProcess(&psn) == noErr)
	    SetFrontProcess(&psn);
    }

    return OK;
}

#ifdef USE_ATSUI_DRAWING
    static void
gui_mac_dispose_atsui_style(void)
{
    if (p_macatsui && gFontStyle)
	ATSUDisposeStyle(gFontStyle);
    if (p_macatsui && gWideFontStyle)
	ATSUDisposeStyle(gWideFontStyle);
}
#endif

    void
gui_mch_exit(int rc)
{
    // TODO: find out all what is missing here?
    DisposeRgn(cursorRgn);

#ifdef USE_CARBONKEYHANDLER
    if (keyEventHandlerUPP)
	DisposeEventHandlerUPP(keyEventHandlerUPP);
#endif

    if (mouseWheelHandlerUPP != NULL)
	DisposeEventHandlerUPP(mouseWheelHandlerUPP);

#ifdef USE_ATSUI_DRAWING
    gui_mac_dispose_atsui_style();
#endif

#ifdef USE_CARBONKEYHANDLER
    FixTSMDocument(gTSMDocument);
    DeactivateTSMDocument(gTSMDocument);
    DeleteTSMDocument(gTSMDocument);
#endif

    // Exit to shell?
    exit(rc);
}

/*
 * Get the position of the top left corner of the window.
 */
    int
gui_mch_get_winpos(int *x, int *y)
{
    // TODO
    Rect	bounds;
    OSStatus	status;

    // Carbon >= 1.0.2, MacOS >= 8.5
    status = GetWindowBounds(gui.VimWindow, kWindowStructureRgn, &bounds);

    if (status != noErr)
	return FAIL;
    *x = bounds.left;
    *y = bounds.top;
    return OK;
}

/*
 * Set the position of the top left corner of the window to the given
 * coordinates.
 */
    void
gui_mch_set_winpos(int x, int y)
{
    // TODO:  Should make sure the window is move within range
    //	      e.g.: y > ~16 [Menu bar], x > 0, x < screen width
    MoveWindowStructure(gui.VimWindow, x, y);
}

    void
gui_mch_set_shellsize(
    int		width,
    int		height,
    int		min_width,
    int		min_height,
    int		base_width,
    int		base_height,
    int		direction)
{
    CGrafPtr	VimPort;
    Rect	VimBound;

    if (gui.which_scrollbars[SBAR_LEFT])
    {
	VimPort = GetWindowPort(gui.VimWindow);
	GetPortBounds(VimPort, &VimBound);
	VimBound.left = -gui.scrollbar_width; // + 1;
	SetPortBounds(VimPort, &VimBound);
    //	GetWindowBounds(gui.VimWindow, kWindowGlobalPortRgn, &winPortRect); ??
    }
    else
    {
	VimPort = GetWindowPort(gui.VimWindow);
	GetPortBounds(VimPort, &VimBound);
	VimBound.left = 0;
	SetPortBounds(VimPort, &VimBound);
    }

    SizeWindow(gui.VimWindow, width, height, TRUE);

    gui_resize_shell(width, height);
}

/*
 * Get the screen dimensions.
 * Allow 10 pixels for horizontal borders, 40 for vertical borders.
 * Is there no way to find out how wide the borders really are?
 * TODO: Add live update of those value on suspend/resume.
 */
    void
gui_mch_get_screen_dimensions(int *screen_w, int *screen_h)
{
    GDHandle	dominantDevice = GetMainDevice();
    Rect	screenRect = (**dominantDevice).gdRect;

    *screen_w = screenRect.right - 10;
    *screen_h = screenRect.bottom - 40;
}


/*
 * Open the Font Panel and wait for the user to select a font and
 * close the panel.  Then fill the buffer pointed to by font_name with
 * the name and size of the selected font and return the font's handle,
 * or NOFONT in case of an error.
 */
    static GuiFont
gui_mac_select_font(char_u *font_name)
{
    GuiFont		    selected_font = NOFONT;
    OSStatus		    status;
    FontSelectionQDStyle    curr_font;

    // Initialize the Font Panel with the current font.
    curr_font.instance.fontFamily = gui.norm_font & 0xFFFF;
    curr_font.size = (gui.norm_font >> 16);
    // TODO: set fontStyle once styles are supported in gui_mac_find_font()
    curr_font.instance.fontStyle = 0;
    curr_font.hasColor = false;
    curr_font.version = 0; // version number of the style structure
    status = SetFontInfoForSelection(kFontSelectionQDType,
	    /*numStyles=*/1, &curr_font, /*eventTarget=*/NULL);

    gFontPanelInfo.family = curr_font.instance.fontFamily;
    gFontPanelInfo.style = curr_font.instance.fontStyle;
    gFontPanelInfo.size = curr_font.size;

    // Pop up the Font Panel.
    status = FPShowHideFontPanel();
    if (status == noErr)
    {
	/*
	 * The Font Panel is modeless.  We really need it to be modal,
	 * so we spin in an event loop until the panel is closed.
	 */
	gFontPanelInfo.isPanelVisible = true;
	while (gFontPanelInfo.isPanelVisible)
	{
	    EventRecord e;
	    WaitNextEvent(everyEvent, &e, /*sleep=*/20, /*mouseRgn=*/NULL);
	}

	GetFontPanelSelection(font_name);
	selected_font = gui_mac_find_font(font_name);
    }
    return selected_font;
}

#ifdef USE_ATSUI_DRAWING
    static void
gui_mac_create_atsui_style(void)
{
    if (p_macatsui && gFontStyle == NULL)
    {
	if (ATSUCreateStyle(&gFontStyle) != noErr)
	    gFontStyle = NULL;
    }
    if (p_macatsui && gWideFontStyle == NULL)
    {
	if (ATSUCreateStyle(&gWideFontStyle) != noErr)
	    gWideFontStyle = NULL;
    }

    p_macatsui_last = p_macatsui;
}
#endif

/*
 * Initialise vim to use the font with the given name.	Return FAIL if the font
 * could not be loaded, OK otherwise.
 */
    int
gui_mch_init_font(char_u *font_name, int fontset)
{
    // TODO: Add support for bold italic underline proportional etc...
    Str255	suggestedFont = "\pMonaco";
    int		suggestedSize = 10;
    FontInfo	font_info;
    short	font_id;
    GuiFont	font;
    char_u	used_font_name[512];

#ifdef USE_ATSUI_DRAWING
    gui_mac_create_atsui_style();
#endif

    if (font_name == NULL)
    {
	// First try to get the suggested font
	GetFNum(suggestedFont, &font_id);

	if (font_id == 0)
	{
	    // Then pickup the standard application font
	    font_id = GetAppFont();
	    STRCPY(used_font_name, "default");
	}
	else
	    STRCPY(used_font_name, "Monaco");
	font = (suggestedSize << 16) + ((long) font_id & 0xFFFF);
    }
    else if (STRCMP(font_name, "*") == 0)
    {
	char_u *new_p_guifont;

	font = gui_mac_select_font(used_font_name);
	if (font == NOFONT)
	    return FAIL;

	// Set guifont to the name of the selected font.
	new_p_guifont = alloc(STRLEN(used_font_name) + 1);
	if (new_p_guifont != NULL)
	{
	    STRCPY(new_p_guifont, used_font_name);
	    vim_free(p_guifont);
	    p_guifont = new_p_guifont;
	    // Replace spaces in the font name with underscores.
	    for ( ; *new_p_guifont; ++new_p_guifont)
	    {
		if (*new_p_guifont == ' ')
		    *new_p_guifont = '_';
	    }
	}
    }
    else
    {
	font = gui_mac_find_font(font_name);
	vim_strncpy(used_font_name, font_name, sizeof(used_font_name) - 1);

	if (font == NOFONT)
	    return FAIL;
    }

    gui.norm_font = font;

    hl_set_font_name(used_font_name);

    TextSize(font >> 16);
    TextFont(font & 0xFFFF);

    GetFontInfo(&font_info);

    gui.char_ascent = font_info.ascent;
    gui.char_width  = CharWidth('_');
    gui.char_height = font_info.ascent + font_info.descent + p_linespace;

#ifdef USE_ATSUI_DRAWING
    if (p_macatsui && gFontStyle)
	gui_mac_set_font_attributes(font);
#endif

    return OK;
}

/*
 * Adjust gui.char_height (after 'linespace' was changed).
 */
    int
gui_mch_adjust_charheight(void)
{
    FontInfo    font_info;

    GetFontInfo(&font_info);
    gui.char_height = font_info.ascent + font_info.descent + p_linespace;
    gui.char_ascent = font_info.ascent + p_linespace / 2;
    return OK;
}

/*
 * Get a font structure for highlighting.
 */
    GuiFont
gui_mch_get_font(char_u *name, int giveErrorIfMissing)
{
    GuiFont font;

    font = gui_mac_find_font(name);

    if (font == NOFONT)
    {
	if (giveErrorIfMissing)
	    semsg(_(e_font), name);
	return NOFONT;
    }
    /*
     * TODO : Accept only monospace
     */

    return font;
}

#if defined(FEAT_EVAL) || defined(PROTO)
/*
 * Return the name of font "font" in allocated memory.
 * Don't know how to get the actual name, thus use the provided name.
 */
    char_u *
gui_mch_get_fontname(GuiFont font, char_u *name)
{
    if (name == NULL)
	return NULL;
    return vim_strsave(name);
}
#endif

#ifdef USE_ATSUI_DRAWING
    static void
gui_mac_set_font_attributes(GuiFont font)
{
    ATSUFontID	fontID;
    Fixed	fontSize;
    Fixed	fontWidth;

    fontID    = font & 0xFFFF;
    fontSize  = Long2Fix(font >> 16);
    fontWidth = Long2Fix(gui.char_width);

    ATSUAttributeTag attribTags[] =
    {
	kATSUFontTag, kATSUSizeTag, kATSUImposeWidthTag,
	kATSUMaxATSUITagValue + 1
    };

    ByteCount attribSizes[] =
    {
	sizeof(ATSUFontID), sizeof(Fixed), sizeof(fontWidth),
	sizeof(font)
    };

    ATSUAttributeValuePtr attribValues[] =
    {
	&fontID, &fontSize, &fontWidth, &font
    };

    if (FMGetFontFromFontFamilyInstance(fontID, 0, &fontID, NULL) == noErr)
    {
	if (ATSUSetAttributes(gFontStyle,
		    (sizeof attribTags) / sizeof(ATSUAttributeTag),
		    attribTags, attribSizes, attribValues) != noErr)
	{
# ifndef NDEBUG
	    fprintf(stderr, "couldn't set font style\n");
# endif
	    ATSUDisposeStyle(gFontStyle);
	    gFontStyle = NULL;
	}

	if (has_mbyte)
	{
	    // FIXME: we should use a more mbyte sensitive way to support
	    // wide font drawing
	    fontWidth = Long2Fix(gui.char_width * 2);

	    if (ATSUSetAttributes(gWideFontStyle,
			(sizeof attribTags) / sizeof(ATSUAttributeTag),
			attribTags, attribSizes, attribValues) != noErr)
	    {
		ATSUDisposeStyle(gWideFontStyle);
		gWideFontStyle = NULL;
	    }
	}
    }
}
#endif

/*
 * Set the current text font.
 */
    void
gui_mch_set_font(GuiFont font)
{
#ifdef USE_ATSUI_DRAWING
    GuiFont			currFont;
    ByteCount			actualFontByteCount;

    if (p_macatsui && gFontStyle)
    {
	// Avoid setting same font again
	if (ATSUGetAttribute(gFontStyle, kATSUMaxATSUITagValue + 1,
		    sizeof(font), &currFont, &actualFontByteCount) == noErr
		&& actualFontByteCount == (sizeof font))
	{
	    if (currFont == font)
		return;
	}

	gui_mac_set_font_attributes(font);
    }

    if (p_macatsui && !gIsFontFallbackSet)
    {
	// Setup automatic font substitution. The user's guifontwide
	// is tried first, then the system tries other fonts.
#if 0
	ATSUAttributeTag fallbackTags[] = { kATSULineFontFallbacksTag };
	ByteCount fallbackSizes[] = { sizeof(ATSUFontFallbacks) };
	ATSUCreateFontFallbacks(&gFontFallbacks);
	ATSUSetObjFontFallbacks(gFontFallbacks, );
#endif
	if (gui.wide_font)
	{
	    ATSUFontID fallbackFonts;
	    gIsFontFallbackSet = TRUE;

	    if (FMGetFontFromFontFamilyInstance(
			(gui.wide_font & 0xFFFF),
			0,
			&fallbackFonts,
			NULL) == noErr)
	    {
		ATSUSetFontFallbacks((sizeof fallbackFonts)/sizeof(ATSUFontID),
				     &fallbackFonts,
				     kATSUSequentialFallbacksPreferred);
	    }
//	ATSUAttributeValuePtr fallbackValues[] = { };
	}
    }
#endif
    TextSize(font >> 16);
    TextFont(font & 0xFFFF);
}

/*
 * If a font is not going to be used, free its structure.
 */
    void
gui_mch_free_font(GuiFont font)
{
    /*
     * Free font when "font" is not 0.
     * Nothing to do in the current implementation, since
     * nothing is allocated for each font used.
     */
}

/*
 * Return the Pixel value (color) for the given color name.  This routine was
 * pretty much taken from example code in the Silicon Graphics OSF/Motif
 * Programmer's Guide.
 * Return INVALCOLOR when failed.
 */
    guicolor_T
gui_mch_get_color(char_u *name)
{
    // TODO: Add support for the new named color of MacOS 8
    RGBColor	MacColor;

    if (STRICMP(name, "hilite") == 0)
    {
	LMGetHiliteRGB(&MacColor);
	return (RGB(MacColor.red >> 8, MacColor.green >> 8, MacColor.blue >> 8));
    }
    return gui_get_color_cmn(name);
}

    guicolor_T
gui_mch_get_rgb_color(int r, int g, int b)
{
    return gui_get_rgb_color_cmn(r, g, b);
}

/*
 * Set the current text foreground color.
 */
    void
gui_mch_set_fg_color(guicolor_T color)
{
    RGBColor TheColor;

    TheColor.red = Red(color) * 0x0101;
    TheColor.green = Green(color) * 0x0101;
    TheColor.blue = Blue(color) * 0x0101;

    RGBForeColor(&TheColor);
}

/*
 * Set the current text background color.
 */
    void
gui_mch_set_bg_color(guicolor_T color)
{
    RGBColor TheColor;

    TheColor.red = Red(color) * 0x0101;
    TheColor.green = Green(color) * 0x0101;
    TheColor.blue = Blue(color) * 0x0101;

    RGBBackColor(&TheColor);
}

RGBColor specialColor;

/*
 * Set the current text special color.
 */
    void
gui_mch_set_sp_color(guicolor_T color)
{
    specialColor.red = Red(color) * 0x0101;
    specialColor.green = Green(color) * 0x0101;
    specialColor.blue = Blue(color) * 0x0101;
}

/*
 * Draw undercurl at the bottom of the character cell.
 */
    static void
draw_undercurl(int flags, int row, int col, int cells)
{
    int			x;
    int			offset;
    const static int	val[8] = {1, 0, 0, 0, 1, 2, 2, 2 };
    int			y = FILL_Y(row + 1) - 1;

    RGBForeColor(&specialColor);

    offset = val[FILL_X(col) % 8];
    MoveTo(FILL_X(col), y - offset);

    for (x = FILL_X(col); x < FILL_X(col + cells); ++x)
    {
	offset = val[x % 8];
	LineTo(x, y - offset);
    }
}


    static void
draw_string_QD(int row, int col, char_u *s, int len, int flags)
{
    char_u	*tofree = NULL;

    if (output_conv.vc_type != CONV_NONE)
    {
	tofree = string_convert(&output_conv, s, &len);
	if (tofree != NULL)
	    s = tofree;
    }

    /*
     * On OS X, try using Quartz-style text antialiasing.
     */
    if (gMacSystemVersion >= 0x1020)
    {
	// Quartz antialiasing is available only in OS 10.2 and later.
	UInt32 qd_flags = (p_antialias ?
			     kQDUseCGTextRendering | kQDUseCGTextMetrics : 0);
	QDSwapTextFlags(qd_flags);
    }

    /*
     * When antialiasing we're using srcOr mode, we have to clear the block
     * before drawing the text.
     * Also needed when 'linespace' is non-zero to remove the cursor and
     * underlining.
     * But not when drawing transparently.
     * The following is like calling gui_mch_clear_block(row, col, row, col +
     * len - 1), but without setting the bg color to gui.back_pixel.
     */
    if (((gMacSystemVersion >= 0x1020 && p_antialias) || p_linespace != 0)
	    && !(flags & DRAW_TRANSP))
    {
	Rect rc;

	rc.left = FILL_X(col);
	rc.top = FILL_Y(row);
	// Multibyte computation taken from gui_w32.c
	if (has_mbyte)
	{
	    // Compute the length in display cells.
	    rc.right = FILL_X(col + mb_string2cells(s, len));
	}
	else
	    rc.right = FILL_X(col + len) + (col + len == Columns);
	rc.bottom = FILL_Y(row + 1);
	EraseRect(&rc);
    }

    if (gMacSystemVersion >= 0x1020 && p_antialias)
    {
	StyleParameter face;

	face = normal;
	if (flags & DRAW_BOLD)
	    face |= bold;
	if (flags & DRAW_UNDERL)
	    face |= underline;
	TextFace(face);

	// Quartz antialiasing works only in srcOr transfer mode.
	TextMode(srcOr);

	MoveTo(TEXT_X(col), TEXT_Y(row));
	DrawText((char*)s, 0, len);
    }
    else
    {
	// Use old-style, non-antialiased QuickDraw text rendering.
	TextMode(srcCopy);
	TextFace(normal);

    //  SelectFont(hdc, gui.currFont);

	if (flags & DRAW_TRANSP)
	    TextMode(srcOr);

	MoveTo(TEXT_X(col), TEXT_Y(row));
	DrawText((char *)s, 0, len);

	if (flags & DRAW_BOLD)
	{
	    TextMode(srcOr);
	    MoveTo(TEXT_X(col) + 1, TEXT_Y(row));
	    DrawText((char *)s, 0, len);
	}

	if (flags & DRAW_UNDERL)
	{
	    MoveTo(FILL_X(col), FILL_Y(row + 1) - 1);
	    LineTo(FILL_X(col + len) - 1, FILL_Y(row + 1) - 1);
	}
	if (flags & DRAW_STRIKE)
	{
	    MoveTo(FILL_X(col), FILL_Y(row + 1) - gui.char_height/2);
	    LineTo(FILL_X(col + len) - 1, FILL_Y(row + 1) - gui.char_height/2);
	}
    }

    if (flags & DRAW_UNDERC)
	draw_undercurl(flags, row, col, len);

    vim_free(tofree);
}

#ifdef USE_ATSUI_DRAWING

    static void
draw_string_ATSUI(int row, int col, char_u *s, int len, int flags)
{
    // ATSUI requires utf-16 strings
    UniCharCount utf16_len;
    UniChar *tofree = mac_enc_to_utf16(s, len, (size_t *)&utf16_len);
    utf16_len /= sizeof(UniChar);

    // - ATSUI automatically antialiases text (Someone)
    // - for some reason it does not work... (Jussi)
#ifdef MAC_ATSUI_DEBUG
    fprintf(stderr, "row = %d, col = %d, len = %d: '%c'\n",
	    row, col, len, len == 1 ? s[0] : ' ');
#endif
    /*
     * When antialiasing we're using srcOr mode, we have to clear the block
     * before drawing the text.
     * Also needed when 'linespace' is non-zero to remove the cursor and
     * underlining.
     * But not when drawing transparently.
     * The following is like calling gui_mch_clear_block(row, col, row, col +
     * len - 1), but without setting the bg color to gui.back_pixel.
     */
    if ((flags & DRAW_TRANSP) == 0)
    {
	Rect rc;

	rc.left = FILL_X(col);
	rc.top = FILL_Y(row);
	// Multibyte computation taken from gui_w32.c
	if (has_mbyte)
	{
	    // Compute the length in display cells.
	    rc.right = FILL_X(col + mb_string2cells(s, len));
	}
	else
	    rc.right = FILL_X(col + len) + (col + len == Columns);

	rc.bottom = FILL_Y(row + 1);
	EraseRect(&rc);
    }

    {
	TextMode(srcCopy);
	TextFace(normal);

	//  SelectFont(hdc, gui.currFont);
	if (flags & DRAW_TRANSP)
	    TextMode(srcOr);

	MoveTo(TEXT_X(col), TEXT_Y(row));

	if (gFontStyle && flags & DRAW_BOLD)
	{
	    Boolean attValue = true;
	    ATSUAttributeTag attribTags[] = { kATSUQDBoldfaceTag };
	    ByteCount attribSizes[] = { sizeof(Boolean) };
	    ATSUAttributeValuePtr attribValues[] = { &attValue };

	    ATSUSetAttributes(gFontStyle, 1, attribTags, attribSizes, attribValues);
	}

	UInt32 useAntialias = p_antialias ? kATSStyleApplyAntiAliasing
					  : kATSStyleNoAntiAliasing;
	if (useAntialias != useAntialias_cached)
	{
	    ATSUAttributeTag attribTags[] = { kATSUStyleRenderingOptionsTag };
	    ByteCount attribSizes[] = { sizeof(UInt32) };
	    ATSUAttributeValuePtr attribValues[] = { &useAntialias };

	    if (gFontStyle)
		ATSUSetAttributes(gFontStyle, 1, attribTags,
						   attribSizes, attribValues);
	    if (gWideFontStyle)
		ATSUSetAttributes(gWideFontStyle, 1, attribTags,
						   attribSizes, attribValues);

	    useAntialias_cached = useAntialias;
	}

	if (has_mbyte)
	{
	    int n, width_in_cell, last_width_in_cell;
	    UniCharArrayOffset offset = 0;
	    UniCharCount yet_to_draw = 0;
	    ATSUTextLayout textLayout;
	    ATSUStyle      textStyle;

	    last_width_in_cell = 1;
	    ATSUCreateTextLayout(&textLayout);
	    ATSUSetTextPointerLocation(textLayout, tofree,
				       kATSUFromTextBeginning,
				       kATSUToTextEnd, utf16_len);
	    /*
	       ATSUSetRunStyle(textLayout, gFontStyle,
	       kATSUFromTextBeginning, kATSUToTextEnd); */

	    // Compute the length in display cells.
	    for (n = 0; n < len; n += MB_BYTE2LEN(s[n]))
	    {
		width_in_cell = (*mb_ptr2cells)(s + n);

		// probably we are switching from single byte character
		// to multibyte characters (which requires more than one
		// cell to draw)
		if (width_in_cell != last_width_in_cell)
		{
#ifdef MAC_ATSUI_DEBUG
		    fprintf(stderr, "\tn = %2d, (%d-%d), offset = %d, yet_to_draw = %d\n",
			    n, last_width_in_cell, width_in_cell, offset, yet_to_draw);
#endif
		    textStyle = last_width_in_cell > 1 ? gWideFontStyle
								 : gFontStyle;

		    ATSUSetRunStyle(textLayout, textStyle, offset, yet_to_draw);
		    offset += yet_to_draw;
		    yet_to_draw = 0;
		    last_width_in_cell = width_in_cell;
		}

		yet_to_draw++;
	    }

	    if (yet_to_draw)
	    {
#ifdef MAC_ATSUI_DEBUG
		fprintf(stderr, "\tn = %2d, (%d-%d), offset = %d, yet_to_draw = %d\n",
			n, last_width_in_cell, width_in_cell, offset, yet_to_draw);
#endif
		// finish the rest style
		textStyle = width_in_cell > 1 ? gWideFontStyle : gFontStyle;
		ATSUSetRunStyle(textLayout, textStyle, offset, kATSUToTextEnd);
	    }

	    ATSUSetTransientFontMatching(textLayout, TRUE);
	    ATSUDrawText(textLayout,
			 kATSUFromTextBeginning, kATSUToTextEnd,
			 kATSUUseGrafPortPenLoc, kATSUUseGrafPortPenLoc);
	    ATSUDisposeTextLayout(textLayout);
	}
	else
	{
	    ATSUTextLayout textLayout;

	    if (ATSUCreateTextLayoutWithTextPtr(tofree,
			kATSUFromTextBeginning, kATSUToTextEnd,
			utf16_len,
			(gFontStyle ? 1 : 0), &utf16_len,
			(gFontStyle ? &gFontStyle : NULL),
			&textLayout) == noErr)
	    {
		ATSUSetTransientFontMatching(textLayout, TRUE);

		ATSUDrawText(textLayout,
			kATSUFromTextBeginning, kATSUToTextEnd,
			kATSUUseGrafPortPenLoc, kATSUUseGrafPortPenLoc);

		ATSUDisposeTextLayout(textLayout);
	    }
	}

	// drawing is done, now reset bold to normal
	if (gFontStyle && flags & DRAW_BOLD)
	{
	    Boolean attValue = false;

	    ATSUAttributeTag attribTags[] = { kATSUQDBoldfaceTag };
	    ByteCount attribSizes[] = { sizeof(Boolean) };
	    ATSUAttributeValuePtr attribValues[] = { &attValue };

	    ATSUSetAttributes(gFontStyle, 1, attribTags, attribSizes,
								attribValues);
	}
    }

    if (flags & DRAW_UNDERC)
	draw_undercurl(flags, row, col, len);

    vim_free(tofree);
}
#endif

    void
gui_mch_draw_string(int row, int col, char_u *s, int len, int flags)
{
#if defined(USE_ATSUI_DRAWING)
    if (p_macatsui == 0 && p_macatsui_last != 0)
	// switch from macatsui to nomacatsui
	gui_mac_dispose_atsui_style();
    else if (p_macatsui != 0 && p_macatsui_last == 0)
	// switch from nomacatsui to macatsui
	gui_mac_create_atsui_style();

    if (p_macatsui)
	draw_string_ATSUI(row, col, s, len, flags);
    else
#endif
	draw_string_QD(row, col, s, len, flags);
}

/*
 * Return OK if the key with the termcap name "name" is supported.
 */
    int
gui_mch_haskey(char_u *name)
{
    int i;

    for (i = 0; special_keys[i].key_sym != (KeySym)0; i++)
	if (name[0] == special_keys[i].vim_code0 &&
					 name[1] == special_keys[i].vim_code1)
	    return OK;
    return FAIL;
}

    void
gui_mch_beep(void)
{
    SysBeep(1); // Should this be 0? (????)
}

    void
gui_mch_flash(int msec)
{
    // Do a visual beep by reversing the foreground and background colors
    Rect    rc;

    /*
     * Note: InvertRect() excludes right and bottom of rectangle.
     */
    rc.left = 0;
    rc.top = 0;
    rc.right = gui.num_cols * gui.char_width;
    rc.bottom = gui.num_rows * gui.char_height;
    InvertRect(&rc);

    ui_delay((long)msec, TRUE);		// wait for some msec

    InvertRect(&rc);
}

/*
 * Invert a rectangle from row r, column c, for nr rows and nc columns.
 */
    void
gui_mch_invert_rectangle(int r, int c, int nr, int nc)
{
    Rect	rc;

    /*
     * Note: InvertRect() excludes right and bottom of rectangle.
     */
    rc.left = FILL_X(c);
    rc.top = FILL_Y(r);
    rc.right = rc.left + nc * gui.char_width;
    rc.bottom = rc.top + nr * gui.char_height;
    InvertRect(&rc);
}

/*
 * Iconify the GUI window.
 */
    void
gui_mch_iconify(void)
{
    // TODO: find out what could replace iconify
    //	     -window shade?
    //	     -hide application?
}

#if defined(FEAT_EVAL) || defined(PROTO)
/*
 * Bring the Vim window to the foreground.
 */
    void
gui_mch_set_foreground(void)
{
    // TODO
}
#endif

/*
 * Draw a cursor without focus.
 */
    void
gui_mch_draw_hollow_cursor(guicolor_T color)
{
    Rect rc;

    /*
     * Note: FrameRect() excludes right and bottom of rectangle.
     */
    rc.left = FILL_X(gui.col);
    rc.top = FILL_Y(gui.row);
    rc.right = rc.left + gui.char_width;
    if (mb_lefthalve(gui.row, gui.col))
	rc.right += gui.char_width;
    rc.bottom = rc.top + gui.char_height;

    gui_mch_set_fg_color(color);

    FrameRect(&rc);
}

/*
 * Draw part of a cursor, only w pixels wide, and h pixels high.
 */
    void
gui_mch_draw_part_cursor(int w, int h, guicolor_T color)
{
    Rect rc;

#ifdef FEAT_RIGHTLEFT
    // vertical line should be on the right of current point
    if (CURSOR_BAR_RIGHT)
	rc.left = FILL_X(gui.col + 1) - w;
    else
#endif
	rc.left = FILL_X(gui.col);
    rc.top = FILL_Y(gui.row) + gui.char_height - h;
    rc.right = rc.left + w;
    rc.bottom = rc.top + h;

    gui_mch_set_fg_color(color);

    FrameRect(&rc);
//    PaintRect(&rc);
}



/*
 * Catch up with any queued X events.  This may put keyboard input into the
 * input buffer, call resize call-backs, trigger timers etc.  If there is
 * nothing in the X event queue (& no timers pending), then we return
 * immediately.
 */
    void
gui_mch_update(void)
{
    // TODO: find what to do
    //	     maybe call gui_mch_wait_for_chars (0)
    //	     more like look at EventQueue then
    //	     call heart of gui_mch_wait_for_chars;
    //
    //	if (eventther)
    //	    gui_mac_handle_event(&event);
    EventRecord theEvent;

    if (EventAvail(everyEvent, &theEvent))
	if (theEvent.what != nullEvent)
	    gui_mch_wait_for_chars(0);
}

/*
 * Simple wrapper to neglect more easily the time
 * spent inside WaitNextEvent while profiling.
 */

    pascal
    Boolean
WaitNextEventWrp(EventMask eventMask, EventRecord *theEvent, UInt32 sleep, RgnHandle mouseRgn)
{
    if (((long) sleep) < -1)
	sleep = 32767;
    return WaitNextEvent(eventMask, theEvent, sleep, mouseRgn);
}

/*
 * GUI input routine called by gui_wait_for_chars().  Waits for a character
 * from the keyboard.
 *  wtime == -1	    Wait forever.
 *  wtime == 0	    This should never happen.
 *  wtime > 0	    Wait wtime milliseconds for a character.
 * Returns OK if a character was found to be available within the given time,
 * or FAIL otherwise.
 */
    int
gui_mch_wait_for_chars(int wtime)
{
    EventMask	mask  = (everyEvent);
    EventRecord event;
    long	entryTick;
    long	currentTick;
    long	sleeppyTick;

    // If we are providing life feedback with the scrollbar,
    // we don't want to try to wait for an event, or else
    // there won't be any life feedback.
    if (dragged_sb != NULL)
	return FAIL;
	// TODO: Check if FAIL is the proper return code

    entryTick = TickCount();

    allow_scrollbar = TRUE;

    do
    {
#if 0
	if (dragRectControl == kCreateEmpty)
	{
	    dragRgn = NULL;
	    dragRectControl = kNothing;
	}
	else
#endif
	if (dragRectControl == kCreateRect)
	{
	    dragRgn = cursorRgn;
	    RectRgn(dragRgn, &dragRect);
	    dragRectControl = kNothing;
	}
	/*
	 * Don't use gui_mch_update() because then we will spin-lock until a
	 * char arrives, instead we use WaitNextEventWrp() to hang until an
	 * event arrives.  No need to check for input_buf_full because we are
	 * returning as soon as it contains a single char.
	 */
	// TODO: reduce wtime accordingly???
	if (wtime > -1)
	    sleeppyTick = 60 * wtime / 1000;
	else
	    sleeppyTick = 32767;

	if (WaitNextEventWrp(mask, &event, sleeppyTick, dragRgn))
	{
	    gui_mac_handle_event(&event);
	    if (input_available())
	    {
		allow_scrollbar = FALSE;
		return OK;
	    }
	}
	currentTick = TickCount();
    }
    while ((wtime == -1) || ((currentTick - entryTick) < 60*wtime/1000));

    allow_scrollbar = FALSE;
    return FAIL;
}

/*
 * Output routines.
 */

/*
 * Flush any output to the screen
 */
    void
gui_mch_flush(void)
{
    // TODO: Is anything needed here?
}

/*
 * Clear a rectangular region of the screen from text pos (row1, col1) to
 * (row2, col2) inclusive.
 */
    void
gui_mch_clear_block(int row1, int col1, int row2, int col2)
{
    Rect rc;

    /*
     * Clear one extra pixel at the far right, for when bold characters have
     * spilled over to the next column.
     */
    rc.left = FILL_X(col1);
    rc.top = FILL_Y(row1);
    rc.right = FILL_X(col2 + 1) + (col2 == Columns - 1);
    rc.bottom = FILL_Y(row2 + 1);

    gui_mch_set_bg_color(gui.back_pixel);
    EraseRect(&rc);
}

/*
 * Clear the whole text window.
 */
    void
gui_mch_clear_all(void)
{
    Rect	rc;

    rc.left = 0;
    rc.top = 0;
    rc.right = Columns * gui.char_width + 2 * gui.border_width;
    rc.bottom = Rows * gui.char_height + 2 * gui.border_width;

    gui_mch_set_bg_color(gui.back_pixel);
    EraseRect(&rc);
//  gui_mch_set_fg_color(gui.norm_pixel);
//    FrameRect(&rc);
}

/*
 * Delete the given number of lines from the given row, scrolling up any
 * text further down within the scroll region.
 */
    void
gui_mch_delete_lines(int row, int num_lines)
{
    Rect	rc;

    // changed without checking!
    rc.left = FILL_X(gui.scroll_region_left);
    rc.right = FILL_X(gui.scroll_region_right + 1);
    rc.top = FILL_Y(row);
    rc.bottom = FILL_Y(gui.scroll_region_bot + 1);

    gui_mch_set_bg_color(gui.back_pixel);
    ScrollRect(&rc, 0, -num_lines * gui.char_height, (RgnHandle) nil);

    gui_clear_block(gui.scroll_region_bot - num_lines + 1,
						       gui.scroll_region_left,
	gui.scroll_region_bot, gui.scroll_region_right);
}

/*
 * Insert the given number of lines before the given row, scrolling down any
 * following text within the scroll region.
 */
    void
gui_mch_insert_lines(int row, int num_lines)
{
    Rect rc;

    rc.left = FILL_X(gui.scroll_region_left);
    rc.right = FILL_X(gui.scroll_region_right + 1);
    rc.top = FILL_Y(row);
    rc.bottom = FILL_Y(gui.scroll_region_bot + 1);

    gui_mch_set_bg_color(gui.back_pixel);

    ScrollRect(&rc, 0, gui.char_height * num_lines, (RgnHandle) nil);

    // Update gui.cursor_row if the cursor scrolled or copied over
    if (gui.cursor_row >= gui.row
	    && gui.cursor_col >= gui.scroll_region_left
	    && gui.cursor_col <= gui.scroll_region_right)
    {
	if (gui.cursor_row <= gui.scroll_region_bot - num_lines)
	    gui.cursor_row += num_lines;
	else if (gui.cursor_row <= gui.scroll_region_bot)
	    gui.cursor_is_valid = FALSE;
    }

    gui_clear_block(row, gui.scroll_region_left,
				row + num_lines - 1, gui.scroll_region_right);
}

    /*
     * TODO: add a vim format to the clipboard which remember
     *	     LINEWISE, CHARWISE, BLOCKWISE
     */

    void
clip_mch_request_selection(Clipboard_T *cbd)
{

    Handle	textOfClip;
    int		flavor = 0;
    Size	scrapSize;
    ScrapFlavorFlags	scrapFlags;
    ScrapRef    scrap = nil;
    OSStatus	error;
    int		type;
    char	*searchCR;
    char_u	*tempclip;


    error = GetCurrentScrap(&scrap);
    if (error != noErr)
	return;

    error = GetScrapFlavorFlags(scrap, VIMSCRAPFLAVOR, &scrapFlags);
    if (error == noErr)
    {
	error = GetScrapFlavorSize(scrap, VIMSCRAPFLAVOR, &scrapSize);
	if (error == noErr && scrapSize > 1)
	    flavor = 1;
    }

    if (flavor == 0)
    {
	error = GetScrapFlavorFlags(scrap, SCRAPTEXTFLAVOR, &scrapFlags);
	if (error != noErr)
	    return;

	error = GetScrapFlavorSize(scrap, SCRAPTEXTFLAVOR, &scrapSize);
	if (error != noErr)
	    return;
    }

    ReserveMem(scrapSize);

    // In CARBON we don't need a Handle, a pointer is good
    textOfClip = NewHandle(scrapSize);

    // tempclip = alloc(scrapSize+1);
    HLock(textOfClip);
    error = GetScrapFlavorData(scrap,
	    flavor ? VIMSCRAPFLAVOR : SCRAPTEXTFLAVOR,
	    &scrapSize, *textOfClip);
    scrapSize -= flavor;

    if (flavor)
	type = **textOfClip;
    else
	type = MAUTO;

    tempclip = alloc(scrapSize + 1);
    mch_memmove(tempclip, *textOfClip + flavor, scrapSize);
    tempclip[scrapSize] = 0;

#ifdef MACOS_CONVERT
    {
	// Convert from utf-16 (clipboard)
	size_t encLen = 0;
	char_u *to = mac_utf16_to_enc((UniChar *)tempclip, scrapSize, &encLen);

	if (to != NULL)
	{
	    scrapSize = encLen;
	    vim_free(tempclip);
	    tempclip = to;
	}
    }
#endif

    searchCR = (char *)tempclip;
    while (searchCR != NULL)
    {
	searchCR = strchr(searchCR, '\r');
	if (searchCR != NULL)
	    *searchCR = '\n';
    }

    clip_yank_selection(type, tempclip, scrapSize, cbd);

    vim_free(tempclip);
    HUnlock(textOfClip);

    DisposeHandle(textOfClip);
}

    void
clip_mch_lose_selection(Clipboard_T *cbd)
{
    /*
     * TODO: Really nothing to do?
     */
}

    int
clip_mch_own_selection(Clipboard_T *cbd)
{
    return OK;
}

/*
 * Send the current selection to the clipboard.
 */
    void
clip_mch_set_selection(Clipboard_T *cbd)
{
    Handle	textOfClip;
    long	scrapSize;
    int		type;
    ScrapRef    scrap;

    char_u	*str = NULL;

    if (!cbd->owned)
	return;

    clip_get_selection(cbd);

    /*
     * Once we set the clipboard, lose ownership.  If another application sets
     * the clipboard, we don't want to think that we still own it.
     */
    cbd->owned = FALSE;

    type = clip_convert_selection(&str, (long_u *)&scrapSize, cbd);

#ifdef MACOS_CONVERT
    size_t utf16_len = 0;
    UniChar *to = mac_enc_to_utf16(str, scrapSize, &utf16_len);
    if (to)
    {
	scrapSize = utf16_len;
	vim_free(str);
	str = (char_u *)to;
    }
#endif

    if (type >= 0)
    {
	ClearCurrentScrap();

	textOfClip = NewHandle(scrapSize + 1);
	HLock(textOfClip);

	**textOfClip = type;
	mch_memmove(*textOfClip + 1, str, scrapSize);
	GetCurrentScrap(&scrap);
	PutScrapFlavor(scrap, SCRAPTEXTFLAVOR, kScrapFlavorMaskNone,
		scrapSize, *textOfClip + 1);
	PutScrapFlavor(scrap, VIMSCRAPFLAVOR, kScrapFlavorMaskNone,
		scrapSize + 1, *textOfClip);
	HUnlock(textOfClip);
	DisposeHandle(textOfClip);
    }

    vim_free(str);
}

    void
gui_mch_set_text_area_pos(int x, int y, int w, int h)
{
    Rect	VimBound;

//  HideWindow(gui.VimWindow);
    GetWindowBounds(gui.VimWindow, kWindowGlobalPortRgn, &VimBound);

    if (gui.which_scrollbars[SBAR_LEFT])
	VimBound.left = -gui.scrollbar_width + 1;
    else
	VimBound.left = 0;

    SetWindowBounds(gui.VimWindow, kWindowGlobalPortRgn, &VimBound);

    ShowWindow(gui.VimWindow);
}

/*
 * Menu stuff.
 */

    void
gui_mch_enable_menu(int flag)
{
    /*
     * Menu is always active.
     */
}

    void
gui_mch_set_menu_pos(int x, int y, int w, int h)
{
    /*
     * The menu is always at the top of the screen.
     */
}

/*
 * Add a sub menu to the menu bar.
 */
    void
gui_mch_add_menu(vimmenu_T *menu, int idx)
{
    /*
     * TODO: Try to use only menu_id instead of both menu_id and menu_handle.
     * TODO: use menu->mnemonic and menu->actext
     * TODO: Try to reuse menu id
     *       Carbon Help suggest to use only id between 1 and 235
     */
    static long	 next_avail_id = 128;
    long	 menu_after_me = 0; // Default to the end
    CFStringRef name;
    short	 index;
    vimmenu_T	*parent = menu->parent;
    vimmenu_T	*brother = menu->next;

    // Cannot add a menu if ...
    if ((parent != NULL && parent->submenu_id == 0))
	return;

    // menu ID greater than 1024 are reserved for ???
    if (next_avail_id == 1024)
	return;

    // My brother could be the PopUp, find my real brother
    while ((brother != NULL) && (!menu_is_menubar(brother->name)))
	brother = brother->next;

    //  Find where to insert the menu (for MenuBar)
    if ((parent == NULL) && (brother != NULL))
	menu_after_me = brother->submenu_id;

    // If the menu is not part of the menubar (and its submenus), add it 'nowhere'
    if (!menu_is_menubar(menu->name))
	menu_after_me = hierMenu;

    // Convert the name
#ifdef MACOS_CONVERT
    name = menu_title_removing_mnemonic(menu);
#else
    name = C2Pascal_save(menu->dname);
#endif
    if (name == NULL)
	return;

    // Create the menu unless it's the help menu
    {
	// Carbon suggest use of
	// OSStatus CreateNewMenu(MenuID, MenuAttributes, MenuRef *);
	// OSStatus SetMenuTitle(MenuRef, ConstStr255Param title);
	menu->submenu_id = next_avail_id;
	if (CreateNewMenu(menu->submenu_id, 0, (MenuRef *)&menu->submenu_handle) == noErr)
	    SetMenuTitleWithCFString((MenuRef)menu->submenu_handle, name);
	next_avail_id++;
    }

    if (parent == NULL)
    {
	// Adding a menu to the menubar, or in the no mans land (for PopUp)

	// TODO: Verify if we could only Insert Menu if really part of the
	// menubar The Inserted menu are scanned or the Command-key combos

	// Insert the menu
	InsertMenu(menu->submenu_handle, menu_after_me); // insert before
#if 1
	// Vim should normally update it. TODO: verify
	DrawMenuBar();
#endif
    }
    else
    {
	// Adding as a submenu

	index = gui_mac_get_menu_item_index(menu);

	// Call InsertMenuItem followed by SetMenuItemText
	// to avoid special character recognition by InsertMenuItem
	InsertMenuItem(parent->submenu_handle, "\p ", idx); // afterItem
	SetMenuItemTextWithCFString(parent->submenu_handle, idx+1, name);
	SetItemCmd(parent->submenu_handle, idx+1, 0x1B);
	SetItemMark(parent->submenu_handle, idx+1, menu->submenu_id);
	InsertMenu(menu->submenu_handle, hierMenu);
    }

    CFRelease(name);

#if 0
    // Done by Vim later on
    DrawMenuBar();
#endif
}

/*
 * Add a menu item to a menu
 */
    void
gui_mch_add_menu_item(vimmenu_T *menu, int idx)
{
    CFStringRef name;
    vimmenu_T	*parent = menu->parent;
    int		menu_inserted;

    // Cannot add item, if the menu have not been created
    if (parent->submenu_id == 0)
	return;

    // Could call SetMenuRefCon [CARBON] to associate with the Menu,
    // for older OS call GetMenuItemData (menu, item, isCommandID?, data)

    // Convert the name
#ifdef MACOS_CONVERT
    name = menu_title_removing_mnemonic(menu);
#else
    name = C2Pascal_save(menu->dname);
#endif

    // Where are just a menu item, so no handle, no id
    menu->submenu_id = 0;
    menu->submenu_handle = NULL;

    menu_inserted = 0;
    if (menu->actext)
    {
	// If the accelerator text for the menu item looks like it describes
	// a command key (e.g., "<D-S-t>" or "<C-7>"), display it as the
	// item's command equivalent.
	int	    key = 0;
	int	    modifiers = 0;
	char_u	    *p_actext;

	p_actext = menu->actext;
	key = find_special_key(&p_actext, &modifiers, FALSE, FALSE, FALSE,
								   TRUE, NULL);
	if (*p_actext != 0)
	    key = 0; // error: trailing text
	// find_special_key() returns a keycode with as many of the
	// specified modifiers as appropriate already applied (e.g., for
	// "<D-C-x>" it returns Ctrl-X as the keycode and MOD_MASK_CMD
	// as the only modifier).  Since we want to display all of the
	// modifiers, we need to convert the keycode back to a printable
	// character plus modifiers.
	// TODO: Write an alternative find_special_key() that doesn't
	// apply modifiers.
	if (key > 0 && key < 32)
	{
	    // Convert a control key to an uppercase letter.  Note that
	    // by this point it is no longer possible to distinguish
	    // between, e.g., Ctrl-S and Ctrl-Shift-S.
	    modifiers |= MOD_MASK_CTRL;
	    key += '@';
	}
	// If the keycode is an uppercase letter, set the Shift modifier.
	// If it is a lowercase letter, don't set the modifier, but convert
	// the letter to uppercase for display in the menu.
	else if (key >= 'A' && key <= 'Z')
	    modifiers |= MOD_MASK_SHIFT;
	else if (key >= 'a' && key <= 'z')
	    key += 'A' - 'a';
	// Note: keycodes below 0x22 are reserved by Apple.
	if (key >= 0x22 && vim_isprintc_strict(key))
	{
	    int		valid = 1;
	    char_u      mac_mods = kMenuNoModifiers;
	    // Convert Vim modifier codes to Menu Manager equivalents.
	    if (modifiers & MOD_MASK_SHIFT)
		mac_mods |= kMenuShiftModifier;
	    if (modifiers & MOD_MASK_CTRL)
		mac_mods |= kMenuControlModifier;
	    if (!(modifiers & MOD_MASK_CMD))
		mac_mods |= kMenuNoCommandModifier;
	    if (modifiers & MOD_MASK_ALT || modifiers & MOD_MASK_MULTI_CLICK)
		valid = 0; // TODO: will Alt someday map to Option?
	    if (valid)
	    {
		char_u	    item_txt[10];
		// Insert the menu item after idx, with its command key.
		item_txt[0] = 3; item_txt[1] = ' '; item_txt[2] = '/';
		item_txt[3] = key;
		InsertMenuItem(parent->submenu_handle, item_txt, idx);
		// Set the modifier keys.
		SetMenuItemModifiers(parent->submenu_handle, idx+1, mac_mods);
		menu_inserted = 1;
	    }
	}
    }
    // Call InsertMenuItem followed by SetMenuItemText
    // to avoid special character recognition by InsertMenuItem
    if (!menu_inserted)
	InsertMenuItem(parent->submenu_handle, "\p ", idx); // afterItem
    // Set the menu item name.
    SetMenuItemTextWithCFString(parent->submenu_handle, idx+1, name);

#if 0
    // Called by Vim
    DrawMenuBar();
#endif

    CFRelease(name);
}

    void
gui_mch_toggle_tearoffs(int enable)
{
    // no tearoff menus
}

/*
 * Destroy the machine specific menu widget.
 */
    void
gui_mch_destroy_menu(vimmenu_T *menu)
{
    short	index = gui_mac_get_menu_item_index(menu);

    if (index > 0)
    {
      if (menu->parent)
      {
	{
	    // For now just don't delete help menu items. (Huh? Dany)
	    DeleteMenuItem(menu->parent->submenu_handle, index);

	    // Delete the Menu if it was a hierarchical Menu
	    if (menu->submenu_id != 0)
	    {
		DeleteMenu(menu->submenu_id);
		DisposeMenu(menu->submenu_handle);
	    }
	}
      }
#ifdef DEBUG_MAC_MENU
      else
      {
	printf("gmdm 2\n");
      }
#endif
    }
    else
    {
	{
	    DeleteMenu(menu->submenu_id);
	    DisposeMenu(menu->submenu_handle);
	}
    }
    // Shouldn't this be already done by Vim. TODO: Check
    DrawMenuBar();
}

/*
 * Make a menu either grey or not grey.
 */
    void
gui_mch_menu_grey(vimmenu_T *menu, int grey)
{
    // TODO: Check if menu really exists
    short index = gui_mac_get_menu_item_index(menu);
/*
    index = menu->index;
*/
    if (grey)
    {
	if (menu->children)
	    DisableMenuItem(menu->submenu_handle, index);
	if (menu->parent)
	  if (menu->parent->submenu_handle)
	    DisableMenuItem(menu->parent->submenu_handle, index);
    }
    else
    {
	if (menu->children)
	    EnableMenuItem(menu->submenu_handle, index);
	if (menu->parent)
	  if (menu->parent->submenu_handle)
	    EnableMenuItem(menu->parent->submenu_handle, index);
    }
}

/*
 * Make menu item hidden or not hidden
 */
    void
gui_mch_menu_hidden(vimmenu_T *menu, int hidden)
{
    // There's no hidden mode on MacOS
    gui_mch_menu_grey(menu, hidden);
}


/*
 * This is called after setting all the menus to grey/hidden or not.
 */
    void
gui_mch_draw_menubar(void)
{
    DrawMenuBar();
}


/*
 * Scrollbar stuff.
 */

    void
gui_mch_enable_scrollbar(
	scrollbar_T	*sb,
	int		flag)
{
    if (flag)
	ShowControl(sb->id);
    else
	HideControl(sb->id);

#ifdef DEBUG_MAC_SB
    printf("enb_sb (%x) %x\n",sb->id, flag);
#endif
}

    void
gui_mch_set_scrollbar_thumb(
	scrollbar_T *sb,
	long val,
	long size,
	long max)
{
    SetControl32BitMaximum (sb->id, max);
    SetControl32BitMinimum (sb->id, 0);
    SetControl32BitValue   (sb->id, val);
    SetControlViewSize     (sb->id, size);
#ifdef DEBUG_MAC_SB
    printf("thumb_sb (%x) %lx, %lx,%lx\n",sb->id, val, size, max);
#endif
}

    void
gui_mch_set_scrollbar_pos(
	scrollbar_T *sb,
	int x,
	int y,
	int w,
	int h)
{
    gui_mch_set_bg_color(gui.back_pixel);
#if 0
  if (gui.which_scrollbars[SBAR_LEFT])
    {
	MoveControl(sb->id, x-16, y);
	SizeControl(sb->id, w + 1, h);
    }
    else
    {
	MoveControl(sb->id, x, y);
	SizeControl(sb->id, w + 1, h);
    }
#endif
    if (sb == &gui.bottom_sbar)
	h += 1;
    else
	w += 1;

    if (gui.which_scrollbars[SBAR_LEFT])
	x -= 15;

    MoveControl(sb->id, x, y);
    SizeControl(sb->id, w, h);
#ifdef DEBUG_MAC_SB
    printf("size_sb (%x) %x, %x, %x, %x\n",sb->id, x, y, w, h);
#endif
}

    void
gui_mch_create_scrollbar(
	scrollbar_T *sb,
	int orient)	// SBAR_VERT or SBAR_HORIZ
{
    Rect bounds;

    bounds.top = -16;
    bounds.bottom = -10;
    bounds.right = -10;
    bounds.left = -16;

    sb->id = NewControl(gui.VimWindow,
			 &bounds,
			 "\pScrollBar",
			 TRUE,
			 0, // current
			 0, // top
			 0, // bottom
			 kControlScrollBarLiveProc,
			 (long) sb->ident);
#ifdef DEBUG_MAC_SB
    printf("create_sb (%x) %x\n",sb->id, orient);
#endif
}

    void
gui_mch_destroy_scrollbar(scrollbar_T *sb)
{
    gui_mch_set_bg_color(gui.back_pixel);
    DisposeControl(sb->id);
#ifdef DEBUG_MAC_SB
    printf("dest_sb (%x) \n",sb->id);
#endif
}

    int
gui_mch_is_blinking(void)
{
    return FALSE;
}

    int
gui_mch_is_blink_off(void)
{
    return FALSE;
}

/*
 * Cursor blink functions.
 *
 * This is a simple state machine:
 * BLINK_NONE	not blinking at all
 * BLINK_OFF	blinking, cursor is not shown
 * BLINK_ON blinking, cursor is shown
 */
    void
gui_mch_set_blinking(long wait, long on, long off)
{
#if 0
    // TODO: TODO: TODO: TODO:
    blink_waittime = wait;
    blink_ontime = on;
    blink_offtime = off;
#endif
}

/*
 * Stop the cursor blinking.  Show the cursor if it wasn't shown.
 */
    void
gui_mch_stop_blink(int may_call_gui_update_cursor)
{
    if (may_call_gui_update_cursor)
	gui_update_cursor(TRUE, FALSE);
#if 0
    // TODO: TODO: TODO: TODO:
    gui_w32_rm_blink_timer();
    if (blink_state == BLINK_OFF)
    gui_update_cursor(TRUE, FALSE);
    blink_state = BLINK_NONE;
#endif
}

/*
 * Start the cursor blinking.  If it was already blinking, this restarts the
 * waiting time and shows the cursor.
 */
    void
gui_mch_start_blink(void)
{
    gui_update_cursor(TRUE, FALSE);
    // TODO: TODO: TODO: TODO:
//    gui_w32_rm_blink_timer();

    // Only switch blinking on if none of the times is zero
#if 0
    if (blink_waittime && blink_ontime && blink_offtime)
    {
    blink_timer = SetTimer(NULL, 0, (UINT)blink_waittime,
			    (TIMERPROC)_OnBlinkTimer);
    blink_state = BLINK_ON;
    gui_update_cursor(TRUE, FALSE);
    }
#endif
}

/*
 * Return the RGB value of a pixel as long.
 */
    guicolor_T
gui_mch_get_rgb(guicolor_T pixel)
{
    return (guicolor_T)((Red(pixel) << 16) + (Green(pixel) << 8) + Blue(pixel));
}



#ifdef FEAT_BROWSE
/*
 * Pop open a file browser and return the file selected, in allocated memory,
 * or NULL if Cancel is hit.
 *  saving  - TRUE if the file will be saved to, FALSE if it will be opened.
 *  title   - Title message for the file browser dialog.
 *  dflt    - Default name of file.
 *  ext     - Default extension to be added to files without extensions.
 *  initdir - directory in which to open the browser (NULL = current dir)
 *  filter  - Filter for matched files to choose from.
 *  Has a format like this:
 *  "C Files (*.c)\0*.c\0"
 *  "All Files\0*.*\0\0"
 *  If these two strings were concatenated, then a choice of two file
 *  filters will be selectable to the user.  Then only matching files will
 *  be shown in the browser.  If NULL, the default allows all files.
 *
 *  *NOTE* - the filter string must be terminated with TWO nulls.
 */
    char_u *
gui_mch_browse(
    int saving,
    char_u *title,
    char_u *dflt,
    char_u *ext,
    char_u *initdir,
    char_u *filter)
{
    // TODO: Add Ammon's safety check (Dany)
    NavReplyRecord	reply;
    char_u		*fname = NULL;
    char_u		**fnames = NULL;
    long		numFiles;
    NavDialogOptions	navOptions;
    OSErr		error;

    // Get Navigation Service Defaults value
    NavGetDefaultDialogOptions(&navOptions);


    // TODO: If we get a :browse args, set the Multiple bit.
    navOptions.dialogOptionFlags =  kNavAllowInvisibleFiles
				 |  kNavDontAutoTranslate
				 |  kNavDontAddTranslateItems
			    //	 |  kNavAllowMultipleFiles
				 |  kNavAllowStationery;

    (void) C2PascalString(title,   &navOptions.message);
    (void) C2PascalString(dflt,    &navOptions.savedFileName);
    // Could set clientName?
    //		 windowTitle? (there's no title bar?)

    if (saving)
    {
	// Change first parm AEDesc (typeFSS) *defaultLocation to match dflt
	NavPutFile(NULL, &reply, &navOptions, NULL, 'TEXT', 'VIM!', NULL);
	if (!reply.validRecord)
	    return NULL;
    }
    else
    {
	// Change first parm AEDesc (typeFSS) *defaultLocation to match dflt
	NavGetFile(NULL, &reply, &navOptions, NULL, NULL, NULL, NULL, NULL);
	if (!reply.validRecord)
	    return NULL;
    }

    fnames = new_fnames_from_AEDesc(&reply.selection, &numFiles, &error);

    NavDisposeReply(&reply);

    if (fnames)
    {
	fname = fnames[0];
	vim_free(fnames);
    }

    // TODO: Shorten the file name if possible
    return fname;
}
#endif // FEAT_BROWSE

#ifdef FEAT_GUI_DIALOG
/*
 * Stuff for dialogues
 */

/*
 * Create a dialogue dynamically from the parameter strings.
 * type       = type of dialogue (question, alert, etc.)
 * title      = dialogue title. may be NULL for default title.
 * message    = text to display. Dialogue sizes to accommodate it.
 * buttons    = '\n' separated list of button captions, default first.
 * dfltbutton = number of default button.
 *
 * This routine returns 1 if the first button is pressed,
 *	    2 for the second, etc.
 *
 *	    0 indicates Esc was pressed.
 *	    -1 for unexpected error
 *
 * If stubbing out this fn, return 1.
 */

typedef struct
{
    short   idx;
    short   width;	// Size of the text in pixel
    Rect    box;
} vgmDlgItm; // Vim Gui_Mac.c Dialog Item

#define MoveRectTo(r,x,y) OffsetRect(r,x-r->left,y-r->top)

    static void
macMoveDialogItem(
    DialogRef	theDialog,
    short	itemNumber,
    short	X,
    short	Y,
    Rect	*inBox)
{
#if 0 // USE_CARBONIZED
    // Untested
    MoveDialogItem(theDialog, itemNumber, X, Y);
    if (inBox != nil)
	GetDialogItem(theDialog, itemNumber, &itemType, &itemHandle, inBox);
#else
    short	itemType;
    Handle	itemHandle;
    Rect	localBox;
    Rect	*itemBox = &localBox;

    if (inBox != nil)
	itemBox = inBox;

    GetDialogItem(theDialog, itemNumber, &itemType, &itemHandle, itemBox);
    OffsetRect(itemBox, -itemBox->left, -itemBox->top);
    OffsetRect(itemBox, X, Y);
    // To move a control (like a button) we need to call both
    // MoveControl and SetDialogItem. FAQ 6-18
    if (1) //(itemType & kControlDialogItem)
	MoveControl((ControlRef) itemHandle, X, Y);
    SetDialogItem(theDialog, itemNumber, itemType, itemHandle, itemBox);
#endif
}

    static void
macSizeDialogItem(
    DialogRef	theDialog,
    short	itemNumber,
    short	width,
    short	height)
{
    short	itemType;
    Handle	itemHandle;
    Rect	itemBox;

    GetDialogItem(theDialog, itemNumber, &itemType, &itemHandle, &itemBox);

    // When width or height is zero do not change it
    if (width  == 0)
	width  = itemBox.right  - itemBox.left;
    if (height == 0)
	height = itemBox.bottom - itemBox.top;

#if 0 // USE_CARBONIZED
    SizeDialogItem(theDialog, itemNumber, width, height); // Untested
#else
    // Resize the bounding box
    itemBox.right  = itemBox.left + width;
    itemBox.bottom = itemBox.top  + height;

    // To resize a control (like a button) we need to call both
    // SizeControl and SetDialogItem. (deducted from FAQ 6-18)
    if (itemType & kControlDialogItem)
	SizeControl((ControlRef) itemHandle, width, height);

    // Configure back the item
    SetDialogItem(theDialog, itemNumber, itemType, itemHandle, &itemBox);
#endif
}

    static void
macSetDialogItemText(
    DialogRef	theDialog,
    short	itemNumber,
    Str255	itemName)
{
    short	itemType;
    Handle	itemHandle;
    Rect	itemBox;

    GetDialogItem(theDialog, itemNumber, &itemType, &itemHandle, &itemBox);

    if (itemType & kControlDialogItem)
	SetControlTitle((ControlRef) itemHandle, itemName);
    else
	SetDialogItemText(itemHandle, itemName);
}


/*
 * ModalDialog() handler for message dialogs that have hotkey accelerators.
 * Expects a mapping of hotkey char to control index in gDialogHotKeys;
 * setting gDialogHotKeys to NULL disables any hotkey handling.
 */
    static pascal Boolean
DialogHotkeyFilterProc (
    DialogRef	    theDialog,
    EventRecord	    *event,
    DialogItemIndex *itemHit)
{
    char_u keyHit;

    if (event->what == keyDown || event->what == autoKey)
    {
	keyHit = (event->message & charCodeMask);

	if (gDialogHotKeys && gDialogHotKeys[keyHit])
	{
#ifdef DEBUG_MAC_DIALOG_HOTKEYS
	    printf("user pressed hotkey '%c' --> item %d\n", keyHit, gDialogHotKeys[keyHit]);
#endif
	    *itemHit = gDialogHotKeys[keyHit];

	    // When handing off to StdFilterProc, pretend that the user
	    // clicked the control manually. Note that this is also supposed
	    // to cause the button to hilite briefly (to give some user
	    // feedback), but this seems not to actually work (or it's too
	    // fast to be seen).
	    event->what = kEventControlSimulateHit;

	    return true; // we took care of it
	}

	// Defer to the OS's standard behavior for this event.
	// This ensures that Enter will still activate the default button.
	return StdFilterProc(theDialog, event, itemHit);
    }
    return false;      // Let ModalDialog deal with it
}


/*
 * TODO: There have been some crashes with dialogs, check your inbox
 * (Jussi)
 */
    int
gui_mch_dialog(
    int		type,
    char_u	*title,
    char_u	*message,
    char_u	*buttons,
    int		dfltbutton,
    char_u	*textfield,
    int		ex_cmd)
{
    Handle	buttonDITL;
    Handle	iconDITL;
    Handle	inputDITL;
    Handle	messageDITL;
    Handle	itemHandle;
    Handle	iconHandle;
    DialogPtr	theDialog;
    char_u	len;
    char_u	PascalTitle[256];	// place holder for the title
    char_u	name[256];
    GrafPtr	oldPort;
    short	itemHit;
    char_u	*buttonChar;
    short	hotKeys[256];		// map of hotkey -> control ID
    char_u	aHotKey;
    Rect	box;
    short	button;
    short	lastButton;
    short	itemType;
    short	useIcon;
    short	width;
    short	totalButtonWidth = 0;   // the width of all buttons together
					// including spacing
    short	widestButton = 0;
    short	dfltButtonEdge     = 20;  // gut feeling
    short	dfltElementSpacing = 13;  // from IM:V.2-29
    short       dfltIconSideSpace  = 23;  // from IM:V.2-29
    short	maximumWidth       = 400; // gut feeling
    short	maxButtonWidth	   = 175; // gut feeling

    short	vertical;
    short	dialogHeight;
    short	messageLines = 3;
    FontInfo	textFontInfo;

    vgmDlgItm   iconItm;
    vgmDlgItm   messageItm;
    vgmDlgItm   inputItm;
    vgmDlgItm   buttonItm;

    WindowRef	theWindow;

    ModalFilterUPP dialogUPP;

    // Check 'v' flag in 'guioptions': vertical button placement.
    vertical = (vim_strchr(p_go, GO_VERTICAL) != NULL);

    // Create a new Dialog Box from template.
    theDialog = GetNewDialog(129, nil, (WindowRef) -1);

    // Get the WindowRef
    theWindow = GetDialogWindow(theDialog);

    // Hide the window.
    // 1. to avoid seeing slow drawing
    // 2. to prevent a problem seen while moving dialog item
    //    within a visible window. (non-Carbon MacOS 9)
    // Could be avoided by changing the resource.
    HideWindow(theWindow);

    // Change the graphical port to the dialog,
    // so we can measure the text with the proper font
    GetPort(&oldPort);
    SetPortDialogPort(theDialog);

    // Get the info about the default text,
    // used to calculate the height of the message
    // and of the  text field
    GetFontInfo(&textFontInfo);

    //	Set the dialog title
    if (title != NULL)
    {
	(void) C2PascalString(title, &PascalTitle);
	SetWTitle(theWindow, PascalTitle);
    }

    // Creates the buttons and add them to the Dialog Box.
    buttonDITL = GetResource('DITL', 130);
    buttonChar = buttons;
    button = 0;

    // initialize the hotkey mapping
    vim_memset(hotKeys, 0, sizeof(hotKeys));

    for (;*buttonChar != 0;)
    {
	// Get the name of the button
	button++;
	len = 0;
	for (;((*buttonChar != DLG_BUTTON_SEP) && (*buttonChar != 0) && (len < 255)); buttonChar++)
	{
	    if (*buttonChar != DLG_HOTKEY_CHAR)
		name[++len] = *buttonChar;
	    else
	    {
		aHotKey = (char_u)*(buttonChar+1);
		if (aHotKey >= 'A' && aHotKey <= 'Z')
		    aHotKey = (char_u)((int)aHotKey + (int)'a' - (int)'A');
		hotKeys[aHotKey] = button;
#ifdef DEBUG_MAC_DIALOG_HOTKEYS
		printf("### hotKey for button %d is '%c'\n", button, aHotKey);
#endif
	    }
	}

	if (*buttonChar != 0)
	  buttonChar++;
	name[0] = len;

	// Add the button
	AppendDITL(theDialog, buttonDITL, overlayDITL); // appendDITLRight);

	// Change the button's name
	macSetDialogItemText(theDialog, button, name);

	// Resize the button to fit its name
	width = StringWidth(name) + 2 * dfltButtonEdge;
	// Limit the size of any button to an acceptable value.
	// TODO: Should be based on the message width
	if (width > maxButtonWidth)
	    width = maxButtonWidth;
	macSizeDialogItem(theDialog, button, width, 0);

	totalButtonWidth += width;

	if (width > widestButton)
	    widestButton = width;
    }
    ReleaseResource(buttonDITL);
    lastButton = button;

    // Add the icon to the Dialog Box.
    iconItm.idx = lastButton + 1;
    iconDITL = GetResource('DITL', 131);
    switch (type)
    {
	case VIM_GENERIC:
	case VIM_INFO:
	case VIM_QUESTION: useIcon = kNoteIcon; break;
	case VIM_WARNING:  useIcon = kCautionIcon; break;
	case VIM_ERROR:    useIcon = kStopIcon; break;
	default:	   useIcon = kStopIcon;
    }
    AppendDITL(theDialog, iconDITL, overlayDITL);
    ReleaseResource(iconDITL);
    GetDialogItem(theDialog, iconItm.idx, &itemType, &itemHandle, &box);
    // TODO: Should the item be freed?
    iconHandle = GetIcon(useIcon);
    SetDialogItem(theDialog, iconItm.idx, itemType, iconHandle, &box);

    // Add the message to the Dialog box.
    messageItm.idx = lastButton + 2;
    messageDITL = GetResource('DITL', 132);
    AppendDITL(theDialog, messageDITL, overlayDITL);
    ReleaseResource(messageDITL);
    GetDialogItem(theDialog, messageItm.idx, &itemType, &itemHandle, &box);
    (void) C2PascalString(message, &name);
    SetDialogItemText(itemHandle, name);
    messageItm.width = StringWidth(name);

    // Add the input box if needed
    if (textfield != NULL)
    {
	// Cheat for now reuse the message and convert to text edit
	inputItm.idx = lastButton + 3;
	inputDITL = GetResource('DITL', 132);
	AppendDITL(theDialog, inputDITL, overlayDITL);
	ReleaseResource(inputDITL);
	GetDialogItem(theDialog, inputItm.idx, &itemType, &itemHandle, &box);
//	  SetDialogItem(theDialog, inputItm.idx, kEditTextDialogItem, itemHandle, &box);
	(void) C2PascalString(textfield, &name);
	SetDialogItemText(itemHandle, name);
	inputItm.width = StringWidth(name);

	// Hotkeys don't make sense if there's a text field
	gDialogHotKeys = NULL;
    }
    else
	// Install hotkey table
	gDialogHotKeys = (short *)&hotKeys;

    // Set the <ENTER> and <ESC> button.
    SetDialogDefaultItem(theDialog, dfltbutton);
    SetDialogCancelItem(theDialog, 0);

    // Reposition element

    // Check if we need to force vertical
    if (totalButtonWidth > maximumWidth)
	vertical = TRUE;

    // Place icon
    macMoveDialogItem(theDialog, iconItm.idx, dfltIconSideSpace, dfltElementSpacing, &box);
    iconItm.box.right = box.right;
    iconItm.box.bottom = box.bottom;

    // Place Message
    messageItm.box.left = iconItm.box.right + dfltIconSideSpace;
    macSizeDialogItem(theDialog, messageItm.idx, 0,  messageLines * (textFontInfo.ascent + textFontInfo.descent));
    macMoveDialogItem(theDialog, messageItm.idx, messageItm.box.left, dfltElementSpacing, &messageItm.box);

    // Place Input
    if (textfield != NULL)
    {
	inputItm.box.left = messageItm.box.left;
	inputItm.box.top  = messageItm.box.bottom + dfltElementSpacing;
	macSizeDialogItem(theDialog, inputItm.idx, 0, textFontInfo.ascent + textFontInfo.descent);
	macMoveDialogItem(theDialog, inputItm.idx, inputItm.box.left, inputItm.box.top, &inputItm.box);
	// Convert the static text into a text edit.
	// For some reason this change need to be done last (Dany)
	GetDialogItem(theDialog, inputItm.idx, &itemType, &itemHandle, &inputItm.box);
	SetDialogItem(theDialog, inputItm.idx, kEditTextDialogItem, itemHandle, &inputItm.box);
	SelectDialogItemText(theDialog, inputItm.idx, 0, 32767);
    }

    // Place Button
    if (textfield != NULL)
    {
	buttonItm.box.left = inputItm.box.left;
	buttonItm.box.top  = inputItm.box.bottom + dfltElementSpacing;
    }
    else
    {
	buttonItm.box.left = messageItm.box.left;
	buttonItm.box.top  = messageItm.box.bottom + dfltElementSpacing;
    }

    for (button=1; button <= lastButton; button++)
    {

	macMoveDialogItem(theDialog, button, buttonItm.box.left, buttonItm.box.top, &box);
	// With vertical, it's better to have all buttons the same length
	if (vertical)
	{
	    macSizeDialogItem(theDialog, button, widestButton, 0);
	    GetDialogItem(theDialog, button, &itemType, &itemHandle, &box);
	}
	// Calculate position of next button
	if (vertical)
	    buttonItm.box.top  = box.bottom + dfltElementSpacing;
	else
	    buttonItm.box.left  = box.right + dfltElementSpacing;
    }

    // Resize the dialog box
    dialogHeight = box.bottom + dfltElementSpacing;
    SizeWindow(theWindow, maximumWidth, dialogHeight, TRUE);

    // Magic resize
    AutoSizeDialog(theDialog);
    // Need a horizontal resize anyway so not that useful

    // Display it
    ShowWindow(theWindow);
//  BringToFront(theWindow);
    SelectWindow(theWindow);

//  DrawDialog(theDialog);
#if 0
    GetPort(&oldPort);
    SetPortDialogPort(theDialog);
#endif

#ifdef USE_CARBONKEYHANDLER
    // Avoid that we use key events for the main window.
    dialog_busy = TRUE;
#endif

    // Prepare the shortcut-handling filterProc for handing to the dialog
    dialogUPP = NewModalFilterUPP(DialogHotkeyFilterProc);

    // Hang until one of the button is hit
    do
	ModalDialog(dialogUPP, &itemHit);
    while ((itemHit < 1) || (itemHit > lastButton));

#ifdef USE_CARBONKEYHANDLER
    dialog_busy = FALSE;
#endif

    // Copy back the text entered by the user into the param
    if (textfield != NULL)
    {
	GetDialogItem(theDialog, inputItm.idx, &itemType, &itemHandle, &box);
	GetDialogItemText(itemHandle, (char_u *) &name);
#if IOSIZE < 256
	// Truncate the name to IOSIZE if needed
	if (name[0] > IOSIZE)
	    name[0] = IOSIZE - 1;
#endif
	vim_strncpy(textfield, &name[1], name[0]);
    }

    // Restore the original graphical port
    SetPort(oldPort);

    // Free the modal filterProc
    DisposeRoutineDescriptor(dialogUPP);

    // Get ride of the dialog (free memory)
    DisposeDialog(theDialog);

    return itemHit;
/*
 * Useful thing which could be used
 * SetDialogTimeout(): Auto click a button after timeout
 * SetDialogTracksCursor() : Get the I-beam cursor over input box
 * MoveDialogItem():	    Probably better than SetDialogItem
 * SizeDialogItem():		(but is it Carbon Only?)
 * AutoSizeDialog():	    Magic resize of dialog based on text length
 */
}
#endif // FEAT_DIALOG_GUI

/*
 * Display the saved error message(s).
 */
#ifdef USE_MCH_ERRMSG
    void
display_errors(void)
{
    char	*p;
    char_u	pError[256];

    if (error_ga.ga_data == NULL)
	return;

    // avoid putting up a message box with blanks only
    for (p = (char *)error_ga.ga_data; *p; ++p)
	if (!isspace(*p))
	{
	    if (STRLEN(p) > 255)
		pError[0] = 255;
	    else
		pError[0] = STRLEN(p);

	    STRNCPY(&pError[1], p, pError[0]);
	    ParamText(pError, nil, nil, nil);
	    Alert(128, nil);
	    break;
	    // TODO: handled message longer than 256 chars
	    //	 use auto-sizeable alert
	    //	 or dialog with scrollbars (TextEdit zone)
	}
    ga_clear(&error_ga);
}
#endif

/*
 * Get current mouse coordinates in text window.
 */
    void
gui_mch_getmouse(int *x, int *y)
{
    Point where;

    GetMouse(&where);

    *x = where.h;
    *y = where.v;
}

    void
gui_mch_setmouse(int x, int y)
{
    // TODO
#if 0
    // From FAQ 3-11

    CursorDevicePtr myMouse;
    Point	    where;

    if (   NGetTrapAddress(_CursorDeviceDispatch, ToolTrap)
	!= NGetTrapAddress(_Unimplemented,   ToolTrap))
    {
	// New way

	/*
	 * Get first device with one button.
	 * This will probably be the standard mouse
	 * start at head of cursor dev list
	 *
	 */

	myMouse = nil;

	do
	{
	    // Get the next cursor device
	    CursorDeviceNextDevice(&myMouse);
	}
	while ((myMouse != nil) && (myMouse->cntButtons != 1));

	CursorDeviceMoveTo(myMouse, x, y);
    }
    else
    {
	// Old way
	where.h = x;
	where.v = y;

	*(Point *)RawMouse = where;
	*(Point *)MTemp    = where;
	*(Ptr)    CrsrNew  = 0xFFFF;
    }
#endif
}

    void
gui_mch_show_popupmenu(vimmenu_T *menu)
{
/*
 *  Clone PopUp to use menu
 *  Create a object descriptor for the current selection
 *  Call the procedure
 */

    MenuHandle	CntxMenu;
    Point	where;
    OSStatus	status;
    UInt32	CntxType;
    SInt16	CntxMenuID;
    UInt16	CntxMenuItem;
    Str255	HelpName = "";
    GrafPtr	savePort;

    // Save Current Port: On MacOS X we seem to lose the port
    GetPort(&savePort); //OSX

    GetMouse(&where);
    LocalToGlobal(&where); //OSX
    CntxMenu = menu->submenu_handle;

    // TODO: Get the text selection from Vim

    // Call to Handle Popup
    status = ContextualMenuSelect(CntxMenu, where, false, kCMHelpItemRemoveHelp,
		       HelpName, NULL, &CntxType, &CntxMenuID, &CntxMenuItem);

    if (status == noErr)
    {
	if (CntxType == kCMMenuItemSelected)
	{
	    // Handle the menu CntxMenuID, CntxMenuItem
	    // The submenu can be handle directly by gui_mac_handle_menu
	    // But what about the current menu, is the menu changed by
	    // ContextualMenuSelect
	    gui_mac_handle_menu((CntxMenuID << 16) + CntxMenuItem);
	}
	else if (CntxMenuID == kCMShowHelpSelected)
	{
	    // Should come up with the help
	}
    }

    // Restore original Port
    SetPort(savePort); //OSX
}

#if defined(FEAT_CW_EDITOR) || defined(PROTO)
// TODO: Is it need for MACOS_X? (Dany)
    void
mch_post_buffer_write(buf_T *buf)
{
    GetFSSpecFromPath(buf->b_ffname, &buf->b_FSSpec);
    Send_KAHL_MOD_AE(buf);
}
#endif

#ifdef FEAT_TITLE
/*
 * Set the window title and icon.
 * (The icon is not taken care of).
 */
    void
gui_mch_settitle(char_u *title, char_u *icon)
{
    // TODO: Get vim to make sure maxlen (from p_titlelen) is smaller
    //       that 256. Even better get it to fit nicely in the titlebar.
#ifdef MACOS_CONVERT
    CFStringRef windowTitle;
    size_t	windowTitleLen;
#else
    char_u   *pascalTitle;
#endif

    if (title == NULL)		// nothing to do
	return;

#ifdef MACOS_CONVERT
    windowTitleLen = STRLEN(title);
    windowTitle  = (CFStringRef)mac_enc_to_cfstring(title, windowTitleLen);

    if (windowTitle)
    {
	SetWindowTitleWithCFString(gui.VimWindow, windowTitle);
	CFRelease(windowTitle);
    }
#else
    pascalTitle = C2Pascal_save(title);
    if (pascalTitle != NULL)
    {
	SetWTitle(gui.VimWindow, pascalTitle);
	vim_free(pascalTitle);
    }
#endif
}
#endif

/*
 * Transferred from os_mac.c for MacOS X using os_unix.c prep work
 */

    int
C2PascalString(char_u *CString, Str255 *PascalString)
{
    char_u *PascalPtr = (char_u *) PascalString;
    int    len;
    int    i;

    PascalPtr[0] = 0;
    if (CString == NULL)
	return 0;

    len = STRLEN(CString);
    if (len > 255)
	len = 255;

    for (i = 0; i < len; i++)
	PascalPtr[i+1] = CString[i];

    PascalPtr[0] = len;

    return 0;
}

    int
GetFSSpecFromPath(char_u *file, FSSpec *fileFSSpec)
{
    // From FAQ 8-12
    Str255      filePascal;
    CInfoPBRec	myCPB;
    OSErr	err;

    (void) C2PascalString(file, &filePascal);

    myCPB.dirInfo.ioNamePtr   = filePascal;
    myCPB.dirInfo.ioVRefNum   = 0;
    myCPB.dirInfo.ioFDirIndex = 0;
    myCPB.dirInfo.ioDrDirID   = 0;

    err= PBGetCatInfo(&myCPB, false);

    //    vRefNum, dirID, name
    FSMakeFSSpec(0, 0, filePascal, fileFSSpec);

    // TODO: Use an error code mechanism
    return 0;
}

/*
 * Convert a FSSpec to a full path
 */

char_u *FullPathFromFSSpec_save(FSSpec file)
{
    /*
     * TODO: Add protection for 256 char max.
     */

    CInfoPBRec	theCPB;
    char_u	fname[256];
    char_u	*filenamePtr = fname;
    OSErr	error;
    int		folder = 1;
#ifdef USE_UNIXFILENAME
    SInt16	dfltVol_vRefNum;
    SInt32	dfltVol_dirID;
    FSRef	refFile;
    OSStatus	status;
    UInt32	pathSize = 256;
    char_u	pathname[256];
    char_u	*path = pathname;
#else
    Str255	directoryName;
    char_u	temporary[255];
    char_u	*temporaryPtr = temporary;
#endif

#ifdef USE_UNIXFILENAME
    // Get the default volume
    // TODO: Remove as this only work if Vim is on the Boot Volume
    error=HGetVol(NULL, &dfltVol_vRefNum, &dfltVol_dirID);

    if (error)
      return NULL;
#endif

    // Start filling fname with file.name
    vim_strncpy(filenamePtr, &file.name[1], file.name[0]);

    // Get the info about the file specified in FSSpec
    theCPB.dirInfo.ioFDirIndex = 0;
    theCPB.dirInfo.ioNamePtr   = file.name;
    theCPB.dirInfo.ioVRefNum   = file.vRefNum;
    //theCPB.hFileInfo.ioDirID   = 0;
    theCPB.dirInfo.ioDrDirID   = file.parID;

    // As ioFDirIndex = 0, get the info of ioNamePtr,
    // which is relative to ioVrefNum, ioDirID
    error = PBGetCatInfo(&theCPB, false);

    // If we are called for a new file we expect fnfErr
    if ((error) && (error != fnfErr))
      return NULL;

    // Check if it's a file or folder
    // default to file if file don't exist
    if (((theCPB.hFileInfo.ioFlAttrib & ioDirMask) == 0) || (error))
      folder = 0; // It's not a folder
    else
      folder = 1;

#ifdef USE_UNIXFILENAME
    /*
     * The functions used here are available in Carbon, but do nothing on
     * MacOS 8 and 9.
     */
    if (error == fnfErr)
    {
	// If the file to be saved does not already exist, it isn't possible
	// to convert its FSSpec into an FSRef.  But we can construct an
	// FSSpec for the file's parent folder (since we have its volume and
	// directory IDs), and since that folder does exist, we can convert
	// that FSSpec into an FSRef, convert the FSRef in turn into a path,
	// and, finally, append the filename.
	FSSpec dirSpec;
	FSRef dirRef;
	Str255 emptyFilename = "\p";
	error = FSMakeFSSpec(theCPB.dirInfo.ioVRefNum,
	    theCPB.dirInfo.ioDrDirID, emptyFilename, &dirSpec);
	if (error)
	    return NULL;

	error = FSpMakeFSRef(&dirSpec, &dirRef);
	if (error)
	    return NULL;

	status = FSRefMakePath(&dirRef, (UInt8*)path, pathSize);
	if (status)
	    return NULL;

	STRCAT(path, "/");
	STRCAT(path, filenamePtr);
    }
    else
    {
	// If the file to be saved already exists, we can get its full path
	// by converting its FSSpec into an FSRef.
	error=FSpMakeFSRef(&file, &refFile);
	if (error)
	    return NULL;

	status=FSRefMakePath(&refFile, (UInt8 *) path, pathSize);
	if (status)
	    return NULL;
    }

    // Add a slash at the end if needed
    if (folder)
	STRCAT(path, "/");

    return (vim_strsave(path));
#else
    // TODO: Get rid of all USE_UNIXFILENAME below
    // Set ioNamePtr, it's the same area which is always reused.
    theCPB.dirInfo.ioNamePtr = directoryName;

    // Trick for first entry, set ioDrParID to the first value
    // we want for ioDrDirID
    theCPB.dirInfo.ioDrParID = file.parID;
    theCPB.dirInfo.ioDrDirID = file.parID;

    if ((TRUE) && (file.parID != fsRtDirID /*fsRtParID*/))
    do
    {
	theCPB.dirInfo.ioFDirIndex = -1;
     // theCPB.dirInfo.ioNamePtr   = directoryName; Already done above.
	theCPB.dirInfo.ioVRefNum   = file.vRefNum;
     // theCPB.dirInfo.ioDirID     = irrelevant when ioFDirIndex = -1
	theCPB.dirInfo.ioDrDirID   = theCPB.dirInfo.ioDrParID;

	// As ioFDirIndex = -1, get the info of ioDrDirID,
	//  *ioNamePtr[0 TO 31] will be updated
	error = PBGetCatInfo(&theCPB,false);

	if (error)
	  return NULL;

	// Put the new directoryName in front of the current fname
	STRCPY(temporaryPtr, filenamePtr);
	vim_strncpy(filenamePtr, &directoryName[1], directoryName[0]);
	STRCAT(filenamePtr, ":");
	STRCAT(filenamePtr, temporaryPtr);
    }
#if 1 // def USE_UNIXFILENAME
    while ((theCPB.dirInfo.ioDrParID != fsRtDirID)
	 /* && (theCPB.dirInfo.ioDrDirID != fsRtDirID)*/);
#else
    while (theCPB.dirInfo.ioDrDirID != fsRtDirID);
#endif

    // Get the information about the volume on which the file reside
    theCPB.dirInfo.ioFDirIndex = -1;
 // theCPB.dirInfo.ioNamePtr   = directoryName; Already done above.
    theCPB.dirInfo.ioVRefNum   = file.vRefNum;
 // theCPB.dirInfo.ioDirID     = irrelevant when ioFDirIndex = -1
    theCPB.dirInfo.ioDrDirID   = theCPB.dirInfo.ioDrParID;

    // As ioFDirIndex = -1, get the info of ioDrDirID,
    //	*ioNamePtr[0 TO 31] will be updated
    error = PBGetCatInfo(&theCPB,false);

    if (error)
      return NULL;

    // For MacOS Classic always add the volume name
    // For MacOS X add the volume name preceded by "Volumes"
    //	when we are not referring to the boot volume
#ifdef USE_UNIXFILENAME
    if (file.vRefNum != dfltVol_vRefNum)
#endif
    {
	// Add the volume name
	STRCPY(temporaryPtr, filenamePtr);
	vim_strncpy(filenamePtr, &directoryName[1], directoryName[0]);
	STRCAT(filenamePtr, ":");
	STRCAT(filenamePtr, temporaryPtr);

#ifdef USE_UNIXFILENAME
	STRCPY(temporaryPtr, filenamePtr);
	filenamePtr[0] = 0; // NULL terminate the string
	STRCAT(filenamePtr, "Volumes:");
	STRCAT(filenamePtr, temporaryPtr);
#endif
    }

    // Append final path separator if it's a folder
    if (folder)
	STRCAT(fname, ":");

    // As we use Unix File Name for MacOS X convert it
#ifdef USE_UNIXFILENAME
    // Need to insert leading /
    // TODO: get the above code to use directly the /
    STRCPY(&temporaryPtr[1], filenamePtr);
    temporaryPtr[0] = '/';
    STRCPY(filenamePtr, temporaryPtr);
    {
    char	*p;
    for (p = fname; *p; p++)
	if (*p == ':')
	    *p = '/';
    }
#endif

    return (vim_strsave(fname));
#endif
}

#if defined(USE_CARBONKEYHANDLER) || defined(PROTO)
/*
 * Input Method Control functions.
 */

/*
 * Notify cursor position to IM.
 */
    void
im_set_position(int row, int col)
{
# if 0
    // TODO: Implement me!
    im_start_row = row;
    im_start_col = col;
# endif
}

static ScriptLanguageRecord gTSLWindow;
static ScriptLanguageRecord gTSLInsert;
static ScriptLanguageRecord gTSLDefault = { 0, 0 };

static Component	     gTSCWindow;
static Component	     gTSCInsert;
static Component	     gTSCDefault;

static int		     im_initialized = 0;

    static void
im_on_window_switch(int active)
{
    ScriptLanguageRecord *slptr = NULL;
    OSStatus err;

    if (! gui.in_use)
	return;

    if (im_initialized == 0)
    {
	im_initialized = 1;

	// save default TSM component (should be U.S.) to default
	GetDefaultInputMethodOfClass(&gTSCDefault, &gTSLDefault,
				     kKeyboardInputMethodClass);
    }

    if (active == TRUE)
    {
	im_is_active = TRUE;
	ActivateTSMDocument(gTSMDocument);
	slptr = &gTSLWindow;

	if (slptr)
	{
	    err = SetDefaultInputMethodOfClass(gTSCWindow, slptr,
					       kKeyboardInputMethodClass);
	    if (err == noErr)
		err = SetTextServiceLanguage(slptr);

	    if (err == noErr)
		KeyScript(slptr->fScript | smKeyForceKeyScriptMask);
	}
    }
    else
    {
	err = GetTextServiceLanguage(&gTSLWindow);
	if (err == noErr)
	    slptr = &gTSLWindow;

	if (slptr)
	    GetDefaultInputMethodOfClass(&gTSCWindow, slptr,
					 kKeyboardInputMethodClass);

	im_is_active = FALSE;
	DeactivateTSMDocument(gTSMDocument);
    }
}

/*
 * Set IM status on ("active" is TRUE) or off ("active" is FALSE).
 */
    void
im_set_active(int active)
{
    ScriptLanguageRecord *slptr = NULL;
    OSStatus err;

    if (!gui.in_use)
	return;

    if (im_initialized == 0)
    {
	im_initialized = 1;

	// save default TSM component (should be U.S.) to default
	GetDefaultInputMethodOfClass(&gTSCDefault, &gTSLDefault,
				     kKeyboardInputMethodClass);
    }

    if (active == TRUE)
    {
	im_is_active = TRUE;
	ActivateTSMDocument(gTSMDocument);
	slptr = &gTSLInsert;

	if (slptr)
	{
	    err = SetDefaultInputMethodOfClass(gTSCInsert, slptr,
					       kKeyboardInputMethodClass);
	    if (err == noErr)
		err = SetTextServiceLanguage(slptr);

	    if (err == noErr)
		KeyScript(slptr->fScript | smKeyForceKeyScriptMask);
	}
    }
    else
    {
	err = GetTextServiceLanguage(&gTSLInsert);
	if (err == noErr)
	    slptr = &gTSLInsert;

	if (slptr)
	    GetDefaultInputMethodOfClass(&gTSCInsert, slptr,
					 kKeyboardInputMethodClass);

	// restore to default when switch to normal mode, so than we could
	// enter commands easier
	SetDefaultInputMethodOfClass(gTSCDefault, &gTSLDefault,
				     kKeyboardInputMethodClass);
	SetTextServiceLanguage(&gTSLDefault);

	im_is_active = FALSE;
	DeactivateTSMDocument(gTSMDocument);
    }
}

/*
 * Get IM status.  When IM is on, return not 0.  Else return 0.
 */
    int
im_get_status(void)
{
    if (! gui.in_use)
	return 0;

    return im_is_active;
}

#endif



#if defined(FEAT_GUI_TABLINE) || defined(PROTO)
// drawer implementation
static MenuRef contextMenu = NULL;
enum
{
    kTabContextMenuId = 42
};

// the caller has to CFRelease() the returned string
    static CFStringRef
getTabLabel(tabpage_T *page)
{
    get_tabline_label(page, FALSE);
#ifdef MACOS_CONVERT
    return (CFStringRef)mac_enc_to_cfstring(NameBuff, STRLEN(NameBuff));
#else
    // TODO: check internal encoding?
    return CFStringCreateWithCString(kCFAllocatorDefault, (char *)NameBuff,
						   kCFStringEncodingMacRoman);
#endif
}


#define DRAWER_SIZE 150
#define DRAWER_INSET 16

static ControlRef dataBrowser = NULL;

// when the tabline is hidden, vim doesn't call update_tabline(). When
// the tabline is shown again, show_tabline() is called before update_tabline(),
// and because of this, the tab labels and vim's internal tabs are out of sync
// for a very short time. to prevent inconsistent state, we store the labels
// of the tabs, not pointers to the tabs (which are invalid for a short time).
static CFStringRef *tabLabels = NULL;
static int tabLabelsSize = 0;

enum
{
    kTabsColumn = 'Tabs'
};

    static int
getTabCount(void)
{
    tabpage_T	*tp;
    int		numTabs = 0;

    FOR_ALL_TABPAGES(tp)
	++numTabs;
    return numTabs;
}

// data browser item display callback
    static OSStatus
dbItemDataCallback(ControlRef browser,
	DataBrowserItemID itemID,
	DataBrowserPropertyID property /* column id */,
	DataBrowserItemDataRef itemData,
	Boolean changeValue)
{
    OSStatus status = noErr;

    // assert(property == kTabsColumn); // why is this violated??

    // changeValue is true if we have a modifiable list and data was changed.
    // In our case, it's always false.
    // (that is: if (changeValue) updateInternalData(); else return
    // internalData();
    if (!changeValue)
    {
	CFStringRef str;

	assert(itemID - 1 >= 0 && itemID - 1 < tabLabelsSize);
	str = tabLabels[itemID - 1];
	status = SetDataBrowserItemDataText(itemData, str);
    }
    else
	status = errDataBrowserPropertyNotSupported;

    return status;
}

// data browser action callback
    static void
dbItemNotificationCallback(ControlRef browser,
	DataBrowserItemID item,
	DataBrowserItemNotification message)
{
    switch (message)
    {
	case kDataBrowserItemSelected:
	    send_tabline_event(item);
	    break;
    }
}

// callbacks needed for contextual menu:
    static void
dbGetContextualMenuCallback(ControlRef browser,
	MenuRef *menu,
	UInt32 *helpType,
	CFStringRef *helpItemString,
	AEDesc *selection)
{
    // on mac os 9: kCMHelpItemNoHelp, but it's not the same
    *helpType = kCMHelpItemRemoveHelp; // OS X only ;-)
    *helpItemString = NULL;

    *menu = contextMenu;
}

    static void
dbSelectContextualMenuCallback(ControlRef browser,
	MenuRef menu,
	UInt32 selectionType,
	SInt16 menuID,
	MenuItemIndex menuItem)
{
    if (selectionType == kCMMenuItemSelected)
    {
	MenuCommand command;
	GetMenuItemCommandID(menu, menuItem, &command);

	// get tab that was selected when the context menu appeared
	// (there is always one tab selected). TODO: check if the context menu
	// isn't opened on an item but on empty space (has to be possible some
	// way, the finder does it too ;-) )
	Handle items = NewHandle(0);
	if (items != NULL)
	{
	    int numItems;

	    GetDataBrowserItems(browser, kDataBrowserNoItem, false,
					   kDataBrowserItemIsSelected, items);
	    numItems = GetHandleSize(items) / sizeof(DataBrowserItemID);
	    if (numItems > 0)
	    {
		int idx;
		DataBrowserItemID *itemsPtr;

		HLock(items);
		itemsPtr = (DataBrowserItemID *)*items;
		idx = itemsPtr[0];
		HUnlock(items);
		send_tabline_menu_event(idx, command);
	    }
	    DisposeHandle(items);
	}
    }
}

// focus callback of the data browser to always leave focus in vim
    static OSStatus
dbFocusCallback(EventHandlerCallRef handler, EventRef event, void *data)
{
    assert(GetEventClass(event) == kEventClassControl
	    && GetEventKind(event) == kEventControlSetFocusPart);

    return paramErr;
}


// drawer callback to resize data browser to drawer size
    static OSStatus
drawerCallback(EventHandlerCallRef handler, EventRef event, void *data)
{
    switch (GetEventKind(event))
    {
	case kEventWindowBoundsChanged: // move or resize
	    {
		UInt32 attribs;
		GetEventParameter(event, kEventParamAttributes, typeUInt32,
				       NULL, sizeof(attribs), NULL, &attribs);
		if (attribs & kWindowBoundsChangeSizeChanged) // resize
		{
		    Rect r;
		    GetWindowBounds(drawer, kWindowContentRgn, &r);
		    SetRect(&r, 0, 0, r.right - r.left, r.bottom - r.top);
		    SetControlBounds(dataBrowser, &r);
		    SetDataBrowserTableViewNamedColumnWidth(dataBrowser,
							kTabsColumn, r.right);
		}
	    }
	    break;
    }

    return eventNotHandledErr;
}

// Load DataBrowserChangeAttributes() dynamically on tiger (and better).
// This way the code works on 10.2 and 10.3 as well (it doesn't have the
// blue highlights in the list view on these systems, though. Oh well.)


#import <mach-o/dyld.h>

enum { kMyDataBrowserAttributeListViewAlternatingRowColors = (1 << 1) };

    static OSStatus
myDataBrowserChangeAttributes(ControlRef inDataBrowser,
	OptionBits inAttributesToSet,
	OptionBits inAttributesToClear)
{
    long osVersion;
    char *symbolName;
    NSSymbol symbol = NULL;
    OSStatus (*dataBrowserChangeAttributes)(ControlRef inDataBrowser,
	      OptionBits   inAttributesToSet, OptionBits inAttributesToClear);

    Gestalt(gestaltSystemVersion, &osVersion);
    if (osVersion < 0x1040) // only supported for 10.4 (and up)
	return noErr;

    // C name mangling...
    symbolName = "_DataBrowserChangeAttributes";
    if (!NSIsSymbolNameDefined(symbolName)
	    || (symbol = NSLookupAndBindSymbol(symbolName)) == NULL)
	return noErr;

    dataBrowserChangeAttributes = NSAddressOfSymbol(symbol);
    if (dataBrowserChangeAttributes == NULL)
	return noErr; // well...
    return dataBrowserChangeAttributes(inDataBrowser,
				      inAttributesToSet, inAttributesToClear);
}

    static void
initialise_tabline(void)
{
    Rect drawerRect = { 0, 0, 0, DRAWER_SIZE };
    DataBrowserCallbacks dbCallbacks;
    EventTypeSpec focusEvent = {kEventClassControl, kEventControlSetFocusPart};
    EventTypeSpec resizeEvent = {kEventClassWindow, kEventWindowBoundsChanged};
    DataBrowserListViewColumnDesc colDesc;

    // drawers have to have compositing enabled
    CreateNewWindow(kDrawerWindowClass,
	    kWindowStandardHandlerAttribute
		    | kWindowCompositingAttribute
		    | kWindowResizableAttribute
		    | kWindowLiveResizeAttribute,
	    &drawerRect, &drawer);

    SetThemeWindowBackground(drawer, kThemeBrushDrawerBackground, true);
    SetDrawerParent(drawer, gui.VimWindow);
    SetDrawerOffsets(drawer, kWindowOffsetUnchanged, DRAWER_INSET);


    // create list view embedded in drawer
    CreateDataBrowserControl(drawer, &drawerRect, kDataBrowserListView,
								&dataBrowser);

    dbCallbacks.version = kDataBrowserLatestCallbacks;
    InitDataBrowserCallbacks(&dbCallbacks);
    dbCallbacks.u.v1.itemDataCallback =
				NewDataBrowserItemDataUPP(dbItemDataCallback);
    dbCallbacks.u.v1.itemNotificationCallback =
		NewDataBrowserItemNotificationUPP(dbItemNotificationCallback);
    dbCallbacks.u.v1.getContextualMenuCallback =
	      NewDataBrowserGetContextualMenuUPP(dbGetContextualMenuCallback);
    dbCallbacks.u.v1.selectContextualMenuCallback =
	NewDataBrowserSelectContextualMenuUPP(dbSelectContextualMenuCallback);

    SetDataBrowserCallbacks(dataBrowser, &dbCallbacks);

    SetDataBrowserListViewHeaderBtnHeight(dataBrowser, 0); // no header
    SetDataBrowserHasScrollBars(dataBrowser, false, true); // only vertical
    SetDataBrowserSelectionFlags(dataBrowser,
	      kDataBrowserSelectOnlyOne | kDataBrowserNeverEmptySelectionSet);
    SetDataBrowserTableViewHiliteStyle(dataBrowser,
					     kDataBrowserTableViewFillHilite);
    Boolean b = false;
    SetControlData(dataBrowser, kControlEntireControl,
		  kControlDataBrowserIncludesFrameAndFocusTag, sizeof(b), &b);

    // enable blue background in data browser (this is only in 10.4 and vim
    // has to support older osx versions as well, so we have to load this
    // function dynamically)
    myDataBrowserChangeAttributes(dataBrowser,
		      kMyDataBrowserAttributeListViewAlternatingRowColors, 0);

    // install callback that keeps focus in vim and away from the data browser
    InstallControlEventHandler(dataBrowser, dbFocusCallback, 1, &focusEvent,
								  NULL, NULL);

    // install callback that keeps data browser at the size of the drawer
    InstallWindowEventHandler(drawer, drawerCallback, 1, &resizeEvent,
								  NULL, NULL);

    // add "tabs" column to data browser
    colDesc.propertyDesc.propertyID = kTabsColumn;
    colDesc.propertyDesc.propertyType = kDataBrowserTextType;

    // add if items can be selected (?): kDataBrowserListViewSelectionColumn
    colDesc.propertyDesc.propertyFlags = kDataBrowserDefaultPropertyFlags;

    colDesc.headerBtnDesc.version = kDataBrowserListViewLatestHeaderDesc;
    colDesc.headerBtnDesc.minimumWidth = 100;
    colDesc.headerBtnDesc.maximumWidth = 150;
    colDesc.headerBtnDesc.titleOffset = 0;
    colDesc.headerBtnDesc.titleString = CFSTR("Tabs");
    colDesc.headerBtnDesc.initialOrder = kDataBrowserOrderIncreasing;
    colDesc.headerBtnDesc.btnFontStyle.flags = 0; // use default font
    colDesc.headerBtnDesc.btnContentInfo.contentType = kControlContentTextOnly;

    AddDataBrowserListViewColumn(dataBrowser, &colDesc, 0);

    // create tabline popup menu required by vim docs (see :he tabline-menu)
    CreateNewMenu(kTabContextMenuId, 0, &contextMenu);
    AppendMenuItemTextWithCFString(contextMenu, CFSTR("Close Tab"), 0,
						    TABLINE_MENU_CLOSE, NULL);
    AppendMenuItemTextWithCFString(contextMenu, CFSTR("New Tab"), 0,
						      TABLINE_MENU_NEW, NULL);
    AppendMenuItemTextWithCFString(contextMenu, CFSTR("Open Tab..."), 0,
						     TABLINE_MENU_OPEN, NULL);
}


/*
 * Show or hide the tabline.
 */
    void
gui_mch_show_tabline(int showit)
{
    if (showit == 0)
	CloseDrawer(drawer, true);
    else
	OpenDrawer(drawer, kWindowEdgeRight, true);
}

/*
 * Return TRUE when tabline is displayed.
 */
    int
gui_mch_showing_tabline(void)
{
    WindowDrawerState state = GetDrawerState(drawer);

    return state == kWindowDrawerOpen || state == kWindowDrawerOpening;
}

/*
 * Update the labels of the tabline.
 */
    void
gui_mch_update_tabline(void)
{
    tabpage_T	*tp;
    int		numTabs = getTabCount();
    int		nr = 1;
    int		curtabidx = 1;

    // adjust data browser
    if (tabLabels != NULL)
    {
	int i;

	for (i = 0; i < tabLabelsSize; ++i)
	    CFRelease(tabLabels[i]);
	free(tabLabels);
    }
    tabLabels = (CFStringRef *)malloc(numTabs * sizeof(CFStringRef));
    tabLabelsSize = numTabs;

    for (tp = first_tabpage; tp != NULL; tp = tp->tp_next, ++nr)
    {
	if (tp == curtab)
	    curtabidx = nr;
	tabLabels[nr-1] = getTabLabel(tp);
    }

    RemoveDataBrowserItems(dataBrowser, kDataBrowserNoItem, 0, NULL,
						  kDataBrowserItemNoProperty);
    // data browser uses ids 1, 2, 3, ... numTabs per default, so we
    // can pass NULL for the id array
    AddDataBrowserItems(dataBrowser, kDataBrowserNoItem, numTabs, NULL,
						  kDataBrowserItemNoProperty);

    DataBrowserItemID item = curtabidx;
    SetDataBrowserSelectedItems(dataBrowser, 1, &item, kDataBrowserItemsAssign);
}

/*
 * Set the current tab to "nr".  First tab is 1.
 */
    void
gui_mch_set_curtab(int nr)
{
    DataBrowserItemID item = nr;
    SetDataBrowserSelectedItems(dataBrowser, 1, &item, kDataBrowserItemsAssign);

    // TODO: call something like this?: (or restore scroll position, or...)
    RevealDataBrowserItem(dataBrowser, item, kTabsColumn,
						      kDataBrowserRevealOnly);
}

#endif // FEAT_GUI_TABLINE