Initial Contribution
diff --git a/src/com/android/launcher/LauncherModel.java b/src/com/android/launcher/LauncherModel.java
new file mode 100644
index 0000000..8375bbe
--- /dev/null
+++ b/src/com/android/launcher/LauncherModel.java
@@ -0,0 +1,802 @@
+/*
+ * Copyright (C) 2008 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.android.launcher;
+
+import android.content.ComponentName;
+import android.content.ContentResolver;
+import android.content.ContentValues;
+import android.content.Intent;
+import android.content.Context;
+import android.content.pm.ActivityInfo;
+import android.content.pm.PackageManager;
+import android.content.pm.ResolveInfo;
+import android.content.res.Resources;
+import android.database.Cursor;
+import android.graphics.Bitmap;
+import android.graphics.BitmapFactory;
+import android.graphics.drawable.BitmapDrawable;
+import android.net.Uri;
+import com.android.internal.provider.Settings;
+import android.util.Log;
+
+import java.util.ArrayList;
+import java.util.Collections;
+import java.util.HashMap;
+import java.util.List;
+import java.util.Comparator;
+import java.lang.ref.WeakReference;
+import java.text.Collator;
+
+/**
+ * Maintains in-memory state of the Launcher. It is expected that there should be only one
+ * LauncherModel object held in a static. Also provide APIs for updating the database state
+ * for the Launcher
+ *
+ */
+public class LauncherModel {
+ private static final int UI_NOTIFICATION_RATE = 4;
+ private static final int DEFAULT_APPLICATIONS_NUMBER = 42;
+ private static final long APPLICATION_NOT_RESPONDING_TIMEOUT = 5000;
+
+ private final Collator sCollator = Collator.getInstance();
+
+ private boolean mApplicationsLoaded;
+ private boolean mDesktopItemsLoaded;
+
+ private ArrayList<ItemInfo> mDesktopItems;
+ private HashMap<Long, UserFolderInfo> mUserFolders;
+
+ private ArrayList<ApplicationInfo> mApplications;
+ private ApplicationsAdapter mApplicationsAdapter;
+ private ApplicationsLoader mApplicationsLoader;
+ private DesktopItemsLoader mDesktopItemsLoader;
+ private Thread mLoader;
+ private Thread mDesktopLoader;
+
+ void abortLoaders() {
+ if (mApplicationsLoader != null && mApplicationsLoader.isRunning()) {
+ mApplicationsLoader.stop();
+ mApplicationsLoaded = false;
+ }
+ if (mDesktopItemsLoader != null && mDesktopItemsLoader.isRunning()) {
+ mDesktopItemsLoader.stop();
+ mDesktopItemsLoaded = false;
+ }
+ }
+
+ /**
+ * Loads the list of installed applications in mApplications.
+ */
+ void loadApplications(boolean isLaunching, Launcher launcher) {
+ if (isLaunching && mApplicationsLoaded) {
+ mApplicationsAdapter = new ApplicationsAdapter(launcher, mApplications);
+ return;
+ }
+
+ if (mApplicationsAdapter == null || isLaunching) {
+ mApplicationsAdapter = new ApplicationsAdapter(launcher,
+ mApplications = new ArrayList<ApplicationInfo>(DEFAULT_APPLICATIONS_NUMBER));
+ }
+
+ if (mApplicationsLoader != null && mApplicationsLoader.isRunning()) {
+ mApplicationsLoader.stop();
+ // Wait for the currently running thread to finish, this can take a little
+ // time but it should be well below the timeout limit
+ try {
+ mLoader.join(APPLICATION_NOT_RESPONDING_TIMEOUT);
+ } catch (InterruptedException e) {
+ // Empty
+ }
+ }
+
+ mApplicationsLoaded = false;
+ mApplicationsLoader = new ApplicationsLoader(launcher);
+ mLoader = new Thread(mApplicationsLoader, "Applications Loader");
+ mLoader.start();
+ }
+
+ private class ApplicationsLoader implements Runnable {
+ private final WeakReference<Launcher> mLauncher;
+
+ private volatile boolean mStopped;
+ private volatile boolean mRunning;
+
+ ApplicationsLoader(Launcher launcher) {
+ mLauncher = new WeakReference<Launcher>(launcher);
+ }
+
+ void stop() {
+ mStopped = true;
+ }
+
+ boolean isRunning() {
+ return mRunning;
+ }
+
+ public void run() {
+ mRunning = true;
+
+ Intent mainIntent = new Intent(Intent.ACTION_MAIN, null);
+ mainIntent.addCategory(Intent.CATEGORY_LAUNCHER);
+
+ final Launcher launcher = mLauncher.get();
+ final PackageManager manager = launcher.getPackageManager();
+ final List<ResolveInfo> apps = manager.queryIntentActivities(mainIntent, 0);
+
+ if (apps != null && !mStopped) {
+ final int count = apps.size();
+ final ApplicationsAdapter applicationList = mApplicationsAdapter;
+
+ ChangeNotifier action = new ChangeNotifier(applicationList);
+
+ for (int i = 0; i < count && !mStopped; i++) {
+ ApplicationInfo application = new ApplicationInfo();
+ ResolveInfo info = apps.get(i);
+
+ application.title = info.loadLabel(manager);
+ if (application.title == null) {
+ application.title = info.activityInfo.name;
+ }
+ application.setActivity(new ComponentName(
+ info.activityInfo.applicationInfo.packageName,
+ info.activityInfo.name),
+ Intent.FLAG_ACTIVITY_NEW_TASK |
+ Intent.FLAG_ACTIVITY_RESET_TASK_IF_NEEDED);
+ application.icon = info.activityInfo.loadIcon(manager);
+ application.container = ItemInfo.NO_ID;
+
+ action.add(application);
+ }
+
+ action.sort(new Comparator<ApplicationInfo>() {
+ public final int compare(ApplicationInfo a, ApplicationInfo b) {
+ return sCollator.compare(a.title, b.title);
+ }
+ });
+
+ if (!mStopped) {
+ launcher.runOnUiThread(action);
+ }
+ }
+
+ if (!mStopped) {
+ mApplicationsLoaded = true;
+ }
+ mRunning = false;
+ }
+ }
+
+ private static class ChangeNotifier implements Runnable {
+ private final ApplicationsAdapter mApplicationList;
+ private ArrayList<ApplicationInfo> mBuffer;
+
+ ChangeNotifier(ApplicationsAdapter applicationList) {
+ mApplicationList = applicationList;
+ mBuffer = new ArrayList<ApplicationInfo>(UI_NOTIFICATION_RATE);
+ }
+
+ public void run() {
+ final ArrayList<ApplicationInfo> buffer = mBuffer;
+ final ApplicationsAdapter applicationList = mApplicationList;
+ final int count = buffer.size();
+
+ applicationList.clear();
+ for (int i = 0; i < count; i++) {
+ applicationList.setNotifyOnChange(false);
+ applicationList.add(buffer.get(i));
+ }
+
+ applicationList.notifyDataSetChanged();
+ buffer.clear();
+ }
+
+ void add(ApplicationInfo application) {
+ mBuffer.add(application);
+ }
+
+ void sort(Comparator<ApplicationInfo> comparator) {
+ Collections.sort(mBuffer, comparator);
+ }
+ }
+
+ boolean isDesktopLoaded() {
+ return mDesktopItems != null && mDesktopItemsLoaded;
+ }
+
+ /**
+ * Loads all of the items on the desktop, in folders, or in the dock.
+ * These can be apps, shortcuts or widgets
+ */
+ void loadUserItems(boolean isLaunching, Launcher launcher) {
+ if (isLaunching && mDesktopItems != null && mDesktopItemsLoaded) {
+ // We have already loaded our data from the DB
+ launcher.onDesktopItemsLoaded();
+ return;
+ }
+
+ if (mDesktopItemsLoader != null && mDesktopItemsLoader.isRunning()) {
+ mDesktopItemsLoader.stop();
+ // Wait for the currently running thread to finish, this can take a little
+ // time but it should be well below the timeout limit
+ try {
+ mDesktopLoader.join(APPLICATION_NOT_RESPONDING_TIMEOUT);
+ } catch (InterruptedException e) {
+ // Empty
+ }
+ }
+
+ mDesktopItemsLoaded = false;
+ mDesktopItemsLoader = new DesktopItemsLoader(launcher);
+ mDesktopLoader = new Thread(mDesktopItemsLoader, "Desktop Items Loader");
+ mDesktopLoader.start();
+ }
+
+ private class DesktopItemsLoader implements Runnable {
+ private volatile boolean mStopped;
+ private volatile boolean mRunning;
+
+ private final WeakReference<Launcher> mLauncher;
+
+ DesktopItemsLoader(Launcher launcher) {
+ mLauncher = new WeakReference<Launcher>(launcher);
+ }
+
+ void stop() {
+ mStopped = true;
+ }
+
+ boolean isRunning() {
+ return mRunning;
+ }
+
+ public void run() {
+ mRunning = true;
+
+ final Launcher launcher = mLauncher.get();
+
+ mDesktopItems = new ArrayList<ItemInfo>();
+ mUserFolders = new HashMap<Long, UserFolderInfo>();
+
+ final ArrayList<ItemInfo> desktopItems = mDesktopItems;
+
+ final Cursor c = launcher.getContentResolver().query(Settings.Favorites.CONTENT_URI,
+ null, null, null, null);
+
+ try {
+ final int idIndex = c.getColumnIndexOrThrow(Settings.Favorites.ID);
+ final int intentIndex = c.getColumnIndexOrThrow(Settings.Favorites.INTENT);
+ final int titleIndex = c.getColumnIndexOrThrow(Settings.Favorites.TITLE);
+ final int iconTypeIndex = c.getColumnIndexOrThrow(Settings.Favorites.ICON_TYPE);
+ final int iconIndex = c.getColumnIndexOrThrow(Settings.Favorites.ICON);
+ final int iconPackageIndex = c.getColumnIndexOrThrow(Settings.Favorites.ICON_PACKAGE);
+ final int iconResourceIndex = c.getColumnIndexOrThrow(Settings.Favorites.ICON_RESOURCE);
+ final int containerIndex = c.getColumnIndexOrThrow(Settings.Favorites.CONTAINER);
+ final int itemTypeIndex = c.getColumnIndexOrThrow(Settings.Favorites.ITEM_TYPE);
+ final int screenIndex = c.getColumnIndexOrThrow(Settings.Favorites.SCREEN);
+ final int cellXIndex = c.getColumnIndexOrThrow(Settings.Favorites.CELLX);
+ final int cellYIndex = c.getColumnIndexOrThrow(Settings.Favorites.CELLY);
+
+ final PackageManager manager = launcher.getPackageManager();
+
+ ApplicationInfo info;
+ String intentDescription;
+ Widget widgetInfo = null;
+ int container;
+
+ final HashMap<Long, UserFolderInfo> userFolders = mUserFolders;
+
+ while (!mStopped && c.moveToNext()) {
+ try {
+ int itemType = c.getInt(itemTypeIndex);
+
+ switch (itemType) {
+ case Settings.Favorites.ITEM_TYPE_APPLICATION:
+ case Settings.Favorites.ITEM_TYPE_SHORTCUT:
+ intentDescription = c.getString(intentIndex);
+ Intent intent;
+ try {
+ intent = Intent.getIntent(intentDescription);
+ } catch (java.net.URISyntaxException e) {
+ continue;
+ }
+
+ if (itemType == Settings.Favorites.ITEM_TYPE_APPLICATION) {
+ info = getApplicationInfo(manager, intent);
+ } else {
+ info = getApplicationInfoShortcut(c, launcher, iconTypeIndex,
+ iconPackageIndex, iconResourceIndex, iconIndex);
+ }
+
+ if (info == null) {
+ info = new ApplicationInfo();
+ info.icon = manager.getDefaultActivityIcon();
+ }
+
+ if (info != null) {
+ info.title = c.getString(titleIndex);
+ info.intent = intent;
+
+ info.id = c.getLong(idIndex);
+ container = c.getInt(containerIndex);
+ info.container = container;
+ info.screen = c.getInt(screenIndex);
+ info.cellX = c.getInt(cellXIndex);
+ info.cellY = c.getInt(cellYIndex);
+
+ switch (container) {
+ case Settings.Favorites.CONTAINER_DESKTOP:
+ desktopItems.add(info);
+ break;
+ default:
+ // Item is in a user folder
+ UserFolderInfo folderInfo =
+ findOrMakeFolder(userFolders, container);
+ folderInfo.add(info);
+ break;
+ }
+ }
+ break;
+ case Settings.Favorites.ITEM_TYPE_USER_FOLDER:
+
+ long id = c.getLong(idIndex);
+ UserFolderInfo folderInfo = findOrMakeFolder(userFolders, id);
+
+ folderInfo.title = c.getString(titleIndex);
+
+ folderInfo.id = id;
+ container = c.getInt(containerIndex);
+ folderInfo.container = container;
+ folderInfo.screen = c.getInt(screenIndex);
+ folderInfo.cellX = c.getInt(cellXIndex);
+ folderInfo.cellY = c.getInt(cellYIndex);
+
+ switch (container) {
+ case Settings.Favorites.CONTAINER_DESKTOP:
+ desktopItems.add(folderInfo);
+ break;
+ default:
+
+ }
+ break;
+ case Settings.Favorites.ITEM_TYPE_WIDGET_CLOCK:
+ case Settings.Favorites.ITEM_TYPE_WIDGET_SEARCH:
+ case Settings.Favorites.ITEM_TYPE_WIDGET_PHOTO_FRAME:
+ switch (itemType) {
+ case Settings.Favorites.ITEM_TYPE_WIDGET_CLOCK:
+ widgetInfo = Widget.makeClock();
+ break;
+ case Settings.Favorites.ITEM_TYPE_WIDGET_SEARCH:
+ widgetInfo = Widget.makeSearch();
+ break;
+ case Settings.Favorites.ITEM_TYPE_WIDGET_PHOTO_FRAME:
+ widgetInfo = Widget.makePhotoFrame();
+ byte[] data = c.getBlob(iconIndex);
+ if (data != null) {
+ widgetInfo.photo =
+ BitmapFactory.decodeByteArray(data, 0, data.length);
+ }
+ break;
+ }
+
+ if (widgetInfo != null) {
+ container = c.getInt(containerIndex);
+ if (container != Settings.Favorites.CONTAINER_DESKTOP) {
+ Log.e(Launcher.LOG_TAG, "Widget found where container "
+ + "!= CONTAINER_DESKTOP -- ignoring!");
+ continue;
+ }
+ widgetInfo.id = c.getLong(idIndex);
+ widgetInfo.screen = c.getInt(screenIndex);
+ widgetInfo.container = container;
+ widgetInfo.cellX = c.getInt(cellXIndex);
+ widgetInfo.cellY = c.getInt(cellYIndex);
+
+ desktopItems.add(widgetInfo);
+ }
+ break;
+ }
+ } catch (Exception e) {
+ Log.w(Launcher.LOG_TAG, "Desktop items loading interrupted:", e);
+ }
+ }
+ } finally {
+ c.close();
+ }
+
+ if (!mStopped) {
+ launcher.runOnUiThread(new Runnable() {
+ public void run() {
+ launcher.onDesktopItemsLoaded();
+ }
+ });
+ }
+
+ if (!mStopped) {
+ mDesktopItemsLoaded = true;
+ }
+ mRunning = false;
+ }
+ }
+
+ /**
+ * Finds the user folder defined by the specified id.
+ *
+ * @param id The id of the folder to look for.
+ *
+ * @return A UserFolderInfo if the folder exists or null otherwise.
+ */
+ UserFolderInfo findFolderById(long id) {
+ return mUserFolders.get(id);
+ }
+
+ void addUserFolder(UserFolderInfo info) {
+ mUserFolders.put(info.id, info);
+ }
+
+ /**
+ * Return an existing UserFolderInfo object if we have encountered this ID previously, or make a
+ * new one.
+ */
+ private UserFolderInfo findOrMakeFolder(HashMap<Long, UserFolderInfo> userFolders, long id) {
+ UserFolderInfo folderInfo;
+ // See if a placeholder was created for us already
+ folderInfo = userFolders.get(id);
+ if (folderInfo == null) {
+ // No placeholder -- create a new instance
+ folderInfo = new UserFolderInfo();
+ userFolders.put(id, folderInfo);
+ }
+ return folderInfo;
+ }
+
+ /**
+ * Remove the callback for the cached drawables or we leak the previous
+ * Home screen on orientation change.
+ */
+ void unbind() {
+ mApplicationsAdapter = null;
+ unbindAppDrawables(mApplications);
+ unbindDrawables(mDesktopItems);
+ }
+
+ /**
+ * Remove the callback for the cached drawables or we leak the previous
+ * Home screen on orientation change.
+ */
+ private void unbindDrawables(ArrayList<ItemInfo> desktopItems) {
+ if (desktopItems != null) {
+ final int count = desktopItems.size();
+ for (int i = 0; i < count; i++) {
+ ItemInfo item = desktopItems.get(i);
+ switch (item.itemType) {
+ case Settings.Favorites.ITEM_TYPE_APPLICATION:
+ case Settings.Favorites.ITEM_TYPE_SHORTCUT:
+ ((ApplicationInfo)item).icon.setCallback(null);
+ }
+ }
+ }
+ }
+
+ /**
+ * Remove the callback for the cached drawables or we leak the previous
+ * Home screen on orientation change.
+ */
+ private void unbindAppDrawables(ArrayList<ApplicationInfo> applications) {
+ if (applications != null) {
+ final int count = applications.size();
+ for (int i = 0; i < count; i++) {
+ applications.get(i).icon.setCallback(null);
+ }
+ }
+ }
+
+ /**
+ * @return The current list of applications
+ */
+ public ArrayList<ApplicationInfo> getApplications() {
+ return mApplications;
+ }
+
+ /**
+ * @return The current list of applications
+ */
+ public ApplicationsAdapter getApplicationsAdapter() {
+ return mApplicationsAdapter;
+ }
+
+ /**
+ * @return The current list of desktop items
+ */
+ public ArrayList<ItemInfo> getDesktopItems() {
+ return mDesktopItems;
+ }
+
+ /**
+ * Add an item to the desktop
+ * @param info
+ */
+ public void addDesktopItem(ItemInfo info) {
+ // TODO: write to DB; also check that folder has been added to folders list
+ mDesktopItems.add(info);
+ }
+
+ /**
+ * Remove an item from the desktop
+ * @param info
+ */
+ public void removeDesktopItem(ItemInfo info) {
+ // TODO: write to DB; figure out if we should remove folder from folders list
+ mDesktopItems.remove(info);
+ }
+
+ /**
+ * Make an ApplicationInfo object for an application
+ */
+ private static ApplicationInfo getApplicationInfo(PackageManager manager, Intent intent) {
+ final ResolveInfo resolveInfo = manager.resolveActivity(intent, 0);
+
+ if (resolveInfo == null) {
+ return null;
+ }
+
+ final ApplicationInfo info = new ApplicationInfo();
+ final ActivityInfo activityInfo = resolveInfo.activityInfo;
+ info.icon = activityInfo.loadIcon(manager);
+ if (info.title == null || info.title.length() == 0) {
+ info.title = activityInfo.loadLabel(manager);
+ }
+ if (info.title == null) {
+ info.title = "";
+ }
+ info.itemType = Settings.Favorites.ITEM_TYPE_APPLICATION;
+ return info;
+ }
+
+ /**
+ * Make an ApplicationInfo object for a sortcut
+ */
+ private ApplicationInfo getApplicationInfoShortcut(Cursor c, Launcher launcher,
+ int iconTypeIndex, int iconPackageIndex, int iconResourceIndex, int iconIndex) {
+
+ final ApplicationInfo info = new ApplicationInfo();
+ info.itemType = Settings.Favorites.ITEM_TYPE_SHORTCUT;
+
+ int iconType = c.getInt(iconTypeIndex);
+ switch (iconType) {
+ case Settings.Favorites.ICON_TYPE_RESOURCE:
+ String packageName = c.getString(iconPackageIndex);
+ String resourceName = c.getString(iconResourceIndex);
+ PackageManager packageManager = launcher.getPackageManager();
+ try {
+ Resources resources = packageManager.getResourcesForApplication(packageName);
+ final int id = resources.getIdentifier(resourceName, null, null);
+ info.icon = resources.getDrawable(id);
+ } catch (Exception e) {
+ info.icon = packageManager.getDefaultActivityIcon();
+ }
+ info.iconResource = new Intent.ShortcutIconResource();
+ info.iconResource.packageName = packageName;
+ info.iconResource.resourceName = resourceName;
+ info.customIcon = false;
+ break;
+ case Settings.Favorites.ICON_TYPE_BITMAP:
+ byte[] data = c.getBlob(iconIndex);
+ Bitmap bitmap = BitmapFactory.decodeByteArray(data, 0, data.length);
+ info.icon = new BitmapDrawable(Utilities.createBitmapThumbnail(bitmap, launcher));
+ info.filtered = true;
+ info.customIcon = true;
+ break;
+ default:
+ info.icon = launcher.getPackageManager().getDefaultActivityIcon();
+ info.customIcon = false;
+ break;
+ }
+ return info;
+ }
+
+ /**
+ * Remove an item from the in-memory represention of a user folder. Does not change the DB.
+ */
+ void removeUserFolderItem(UserFolderInfo folder, ItemInfo info) {
+ //noinspection SuspiciousMethodCalls
+ folder.contents.remove(info);
+ }
+
+ /**
+ * Removes a UserFolder from the in-memory list of folders. Does not change the DB.
+ * @param userFolderInfo
+ */
+ void removeUserFolder(UserFolderInfo userFolderInfo) {
+ mUserFolders.remove(userFolderInfo.id);
+ }
+
+ /**
+ * Adds an item to the DB if it was not created previously, or move it to a new
+ * <container, screen, cellX, cellY>
+ */
+ static void addOrMoveItemInDatabase(Context context, ItemInfo item, long container,
+ int screen, int cellX, int cellY) {
+ if (item.container == ItemInfo.NO_ID) {
+ // From all apps
+ addItemToDatabase(context, item, container, screen, cellX, cellY, false);
+ } else {
+ // From somewhere else
+ moveItemInDatabase(context, item, container, screen, cellX, cellY);
+ }
+ }
+
+ /**
+ * Move an item in the DB to a new <container, screen, cellX, cellY>
+ */
+ static void moveItemInDatabase(Context context, ItemInfo item, long container, int screen,
+ int cellX, int cellY) {
+ item.container = container;
+ item.screen = screen;
+ item.cellX = cellX;
+ item.cellY = cellY;
+
+ final ContentValues values = new ContentValues();
+ final ContentResolver cr = context.getContentResolver();
+
+ values.put(Settings.Favorites.CONTAINER, item.container);
+ values.put(Settings.Favorites.CELLX, item.cellX);
+ values.put(Settings.Favorites.CELLY, item.cellY);
+ values.put(Settings.Favorites.SCREEN, item.screen);
+
+ cr.update(Settings.Favorites.getContentUri(item.id, false), values, null, null);
+ }
+
+ /**
+ * Returns true if the shortcuts already exists in the database.
+ * we identify a shortcut by its title and intent.
+ */
+ static boolean shortcutExists(Context context, String title, Intent intent) {
+ final ContentResolver cr = context.getContentResolver();
+ Cursor c = cr.query(Settings.Favorites.CONTENT_URI,
+ new String[] { "title", "intent" }, "title=? and intent=?",
+ new String[] { title, intent.toURI() }, null);
+ boolean result = false;
+ try {
+ result = c.moveToFirst();
+ } finally {
+ c.close();
+ }
+ return result;
+ }
+
+ UserFolderInfo getFolderById(Context context, long id) {
+ final ContentResolver cr = context.getContentResolver();
+ Cursor c = cr.query(Settings.Favorites.CONTENT_URI, null, "_id=? and itemType=?",
+ new String[] { String.valueOf(id),
+ String.valueOf(Settings.Favorites.ITEM_TYPE_USER_FOLDER) }, null);
+
+ try {
+ if (c.moveToFirst()) {
+ final int titleIndex = c.getColumnIndexOrThrow(Settings.Favorites.TITLE);
+ final int containerIndex = c.getColumnIndexOrThrow(Settings.Favorites.CONTAINER);
+ final int screenIndex = c.getColumnIndexOrThrow(Settings.Favorites.SCREEN);
+ final int cellXIndex = c.getColumnIndexOrThrow(Settings.Favorites.CELLX);
+ final int cellYIndex = c.getColumnIndexOrThrow(Settings.Favorites.CELLY);
+
+ UserFolderInfo folderInfo = findOrMakeFolder(mUserFolders, id);
+
+ folderInfo.title = c.getString(titleIndex);
+ folderInfo.id = id;
+ folderInfo.container = c.getInt(containerIndex);
+ folderInfo.screen = c.getInt(screenIndex);
+ folderInfo.cellX = c.getInt(cellXIndex);
+ folderInfo.cellY = c.getInt(cellYIndex);
+
+ return folderInfo;
+ }
+ } finally {
+ c.close();
+ }
+
+ return null;
+ }
+
+ static Widget getPhotoFrameInfo(Context context, int screen, int cellX, int cellY) {
+ final ContentResolver cr = context.getContentResolver();
+ Cursor c = cr.query(Settings.Favorites.CONTENT_URI,
+ null, "screen=? and cellX=? and cellY=? and itemType=?",
+ new String[] { String.valueOf(screen), String.valueOf(cellX), String.valueOf(cellY),
+ String.valueOf(Settings.Favorites.ITEM_TYPE_WIDGET_PHOTO_FRAME) }, null);
+
+ try {
+ if (c.moveToFirst()) {
+ final int idIndex = c.getColumnIndexOrThrow(Settings.Favorites.ID);
+ final int containerIndex = c.getColumnIndexOrThrow(Settings.Favorites.CONTAINER);
+ final int screenIndex = c.getColumnIndexOrThrow(Settings.Favorites.SCREEN);
+ final int cellXIndex = c.getColumnIndexOrThrow(Settings.Favorites.CELLX);
+ final int cellYIndex = c.getColumnIndexOrThrow(Settings.Favorites.CELLY);
+
+ Widget widgetInfo = Widget.makePhotoFrame();
+ widgetInfo.id = c.getLong(idIndex);
+ widgetInfo.screen = c.getInt(screenIndex);
+ widgetInfo.container = c.getInt(containerIndex);
+ widgetInfo.cellX = c.getInt(cellXIndex);
+ widgetInfo.cellY = c.getInt(cellYIndex);
+
+ return widgetInfo;
+ }
+ } finally {
+ c.close();
+ }
+
+ return null;
+ }
+
+ /**
+ * Add an item to the database in a specified container. Sets the container, screen, cellX and
+ * cellY fields of the item. Also assigns an ID to the item.
+ */
+ static void addItemToDatabase(Context context, ItemInfo item, long container,
+ int screen, int cellX, int cellY, boolean notify) {
+ item.container = container;
+ item.screen = screen;
+ item.cellX = cellX;
+ item.cellY = cellY;
+
+ final ContentValues values = new ContentValues();
+ final ContentResolver cr = context.getContentResolver();
+
+ item.onAddToDatabase(values);
+
+ Uri result = cr.insert(notify ? Settings.Favorites.CONTENT_URI :
+ Settings.Favorites.CONTENT_URI_NO_NOTIFICATION, values);
+
+ if (result != null) {
+ item.id = Integer.parseInt(result.getPathSegments().get(1));
+ }
+ }
+
+ /**
+ * Update an item to the database in a specified container.
+ */
+ static void updateItemInDatabase(Context context, ItemInfo item) {
+ final ContentValues values = new ContentValues();
+ final ContentResolver cr = context.getContentResolver();
+
+ item.onAddToDatabase(values);
+
+ cr.update(Settings.Favorites.getContentUri(item.id, false), values, null, null);
+ }
+
+ /**
+ * Removes the specified item from the database
+ * @param context
+ * @param item
+ */
+ static void deleteItemFromDatabase(Context context, ItemInfo item) {
+ final ContentResolver cr = context.getContentResolver();
+
+ cr.delete(Settings.Favorites.getContentUri(item.id, false), null, null);
+ }
+
+
+ /**
+ * Remove the contents of the specified folder from the database
+ */
+ static void deleteUserFolderContentsFromDatabase(Context context, UserFolderInfo info) {
+ final ContentResolver cr = context.getContentResolver();
+
+ cr.delete(Settings.Favorites.getContentUri(info.id, false), null, null);
+ cr.delete(Settings.Favorites.CONTENT_URI, Settings.Favorites.CONTAINER + "=" + info.id,
+ null);
+ }
+}