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Patrick Dubroy4ed62782010-08-17 15:11:18 -07001/*
2 * Copyright (C) 2010 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 * http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17package com.android.launcher2;
18
Patrick Dubroybc6840b2010-09-01 11:54:27 -070019import android.content.ComponentName;
Patrick Dubroy4ed62782010-08-17 15:11:18 -070020import android.content.Context;
21import android.graphics.Paint;
22import android.graphics.PorterDuff;
23import android.graphics.PorterDuffColorFilter;
Michael Jurka3adcb0c2010-10-15 18:07:21 -070024import android.graphics.Rect;
Patrick Dubroy4ed62782010-08-17 15:11:18 -070025import android.util.AttributeSet;
26import android.view.View;
27import android.widget.ImageView;
28
Adam Cohencdc30d52010-12-01 15:09:47 -080029import com.android.launcher.R;
30
Patrick Dubroy4ed62782010-08-17 15:11:18 -070031/**
32 * Implements a DropTarget which allows applications to be dropped on it,
33 * in order to launch the application info for that app.
34 */
35public class ApplicationInfoDropTarget extends ImageView implements DropTarget, DragController.DragListener {
36 private Launcher mLauncher;
Patrick Dubroy4ed62782010-08-17 15:11:18 -070037 private boolean mActive = false;
38
Patrick Dubroydea9e932010-09-22 15:04:29 -070039 /**
40 * If true, this View responsible for managing its own visibility, and that of its handle.
41 * This is generally the case, but it will be set to false when this is part of the
42 * Contextual Action Bar.
43 */
Adam Cohencdc30d52010-12-01 15:09:47 -080044 private boolean mDragAndDropEnabled = true;
Patrick Dubroydea9e932010-09-22 15:04:29 -070045
46 /** The view that this view should appear in the place of. */
47 private View mHandle = null;
Patrick Dubroy4ed62782010-08-17 15:11:18 -070048
49 private final Paint mPaint = new Paint();
50
51 public ApplicationInfoDropTarget(Context context, AttributeSet attrs) {
52 this(context, attrs, 0);
53 }
54
55 public ApplicationInfoDropTarget(Context context, AttributeSet attrs, int defStyle) {
56 super(context, attrs, defStyle);
57 }
58
Patrick Dubroy4ed62782010-08-17 15:11:18 -070059 /**
60 * Set the color that will be used as a filter over objects dragged over this object.
61 */
62 public void setDragColor(int color) {
63 mPaint.setColorFilter(new PorterDuffColorFilter(color, PorterDuff.Mode.SRC_ATOP));
64 }
65
66 public boolean acceptDrop(DragSource source, int x, int y, int xOffset, int yOffset,
67 DragView dragView, Object dragInfo) {
68
69 // acceptDrop is called just before onDrop. We do the work here, rather than
70 // in onDrop, because it allows us to reject the drop (by returning false)
71 // so that the object being dragged isn't removed from the home screen.
Adam Cohencdc30d52010-12-01 15:09:47 -080072 if (getVisibility() != VISIBLE) return false;
Patrick Dubroy4ed62782010-08-17 15:11:18 -070073
Patrick Dubroybc6840b2010-09-01 11:54:27 -070074 ComponentName componentName = null;
Patrick Dubroy4ed62782010-08-17 15:11:18 -070075 if (dragInfo instanceof ApplicationInfo) {
Patrick Dubroybc6840b2010-09-01 11:54:27 -070076 componentName = ((ApplicationInfo)dragInfo).componentName;
Patrick Dubroy4ed62782010-08-17 15:11:18 -070077 } else if (dragInfo instanceof ShortcutInfo) {
Patrick Dubroybc6840b2010-09-01 11:54:27 -070078 componentName = ((ShortcutInfo)dragInfo).intent.getComponent();
Patrick Dubroy4ed62782010-08-17 15:11:18 -070079 }
Patrick Dubroybc6840b2010-09-01 11:54:27 -070080 mLauncher.startApplicationDetailsActivity(componentName);
Patrick Dubroy4ed62782010-08-17 15:11:18 -070081 return false;
82 }
83
Patrick Dubroy4ed62782010-08-17 15:11:18 -070084 public void onDrop(DragSource source, int x, int y, int xOffset, int yOffset,
85 DragView dragView, Object dragInfo) {
86
87 }
88
89 public void onDragEnter(DragSource source, int x, int y, int xOffset, int yOffset,
90 DragView dragView, Object dragInfo) {
Adam Cohencdc30d52010-12-01 15:09:47 -080091 if (!mDragAndDropEnabled) return;
Patrick Dubroy4ed62782010-08-17 15:11:18 -070092 dragView.setPaint(mPaint);
93 }
94
95 public void onDragOver(DragSource source, int x, int y, int xOffset, int yOffset,
96 DragView dragView, Object dragInfo) {
97 }
98
99 public void onDragExit(DragSource source, int x, int y, int xOffset, int yOffset,
100 DragView dragView, Object dragInfo) {
Adam Cohencdc30d52010-12-01 15:09:47 -0800101 if (!mDragAndDropEnabled) return;
Patrick Dubroy4ed62782010-08-17 15:11:18 -0700102 dragView.setPaint(null);
103 }
104
105 public void onDragStart(DragSource source, Object info, int dragAction) {
Adam Cohencdc30d52010-12-01 15:09:47 -0800106 if (info != null && mDragAndDropEnabled) {
Michael Jurka774bd372010-10-22 13:40:50 -0700107 final int itemType = ((ItemInfo)info).itemType;
108 mActive = (itemType == LauncherSettings.Favorites.ITEM_TYPE_APPLICATION);
Adam Cohencdc30d52010-12-01 15:09:47 -0800109
110 // Only show the info icon when an application is selected
111 if (mActive) {
112 setVisibility(VISIBLE);
113 }
114 if (mHandle != null) {
Patrick Dubroydea9e932010-09-22 15:04:29 -0700115 mHandle.setVisibility(INVISIBLE);
Patrick Dubroy4ed62782010-08-17 15:11:18 -0700116 }
Patrick Dubroy4ed62782010-08-17 15:11:18 -0700117 }
118 }
119
Michael Jurka0280c3b2010-09-17 15:00:07 -0700120 public boolean isDropEnabled() {
Michael Jurka3adcb0c2010-10-15 18:07:21 -0700121 return mActive;
Michael Jurka0280c3b2010-09-17 15:00:07 -0700122 }
123
Patrick Dubroy4ed62782010-08-17 15:11:18 -0700124 public void onDragEnd() {
Adam Cohencdc30d52010-12-01 15:09:47 -0800125 if (!mDragAndDropEnabled) return;
126
Patrick Dubroy4ed62782010-08-17 15:11:18 -0700127 if (mActive) {
128 mActive = false;
Michael Jurka466810b2010-10-25 13:41:02 -0700129 }
Adam Cohencdc30d52010-12-01 15:09:47 -0800130 setVisibility(GONE);
131 if (mHandle != null) {
Michael Jurka466810b2010-10-25 13:41:02 -0700132 mHandle.setVisibility(VISIBLE);
Patrick Dubroy4ed62782010-08-17 15:11:18 -0700133 }
134 }
135
Michael Jurka3adcb0c2010-10-15 18:07:21 -0700136 @Override
137 public void getHitRect(Rect outRect) {
138 super.getHitRect(outRect);
139 if (LauncherApplication.isScreenXLarge()) {
Adam Cohencdc30d52010-12-01 15:09:47 -0800140 final int padding = R.dimen.delete_zone_padding;
Adam Lesinski6b879f02010-11-04 16:15:23 -0700141 final int outerDragPadding =
142 getResources().getDimensionPixelSize(R.dimen.delete_zone_size);
Adam Cohencdc30d52010-12-01 15:09:47 -0800143 final int innerDragPadding = getResources().getDimensionPixelSize(padding);
Adam Lesinski6b879f02010-11-04 16:15:23 -0700144 outRect.top -= outerDragPadding;
145 outRect.left -= innerDragPadding;
146 outRect.bottom += outerDragPadding;
147 outRect.right += outerDragPadding;
Michael Jurka3adcb0c2010-10-15 18:07:21 -0700148 }
149 }
150
Patrick Dubroy4ed62782010-08-17 15:11:18 -0700151 void setLauncher(Launcher launcher) {
152 mLauncher = launcher;
153 }
154
Patrick Dubroy4ed62782010-08-17 15:11:18 -0700155 void setHandle(View view) {
156 mHandle = view;
157 }
158
Adam Cohencdc30d52010-12-01 15:09:47 -0800159 void setDragAndDropEnabled(boolean enabled) {
160 mDragAndDropEnabled = enabled;
Patrick Dubroydea9e932010-09-22 15:04:29 -0700161 }
162
Patrick Dubroy4ed62782010-08-17 15:11:18 -0700163 @Override
164 public DropTarget getDropTargetDelegate(DragSource source, int x, int y, int xOffset, int yOffset,
165 DragView dragView, Object dragInfo) {
166 return null;
167 }
168}