summaryrefslogtreecommitdiffstats
path: root/src/com/android/launcher3/ItemInfo.java
blob: 91af5873e7c74f62141d6605d10b551c88878ae2 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
/*
 * 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.launcher3;

import android.content.ContentValues;
import android.content.Context;
import android.content.Intent;
import android.graphics.Bitmap;
import android.util.Log;

import com.android.launcher3.compat.UserHandleCompat;
import com.android.launcher3.compat.UserManagerCompat;

import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.util.Arrays;

/**
 * Represents an item in the launcher.
 */
public class ItemInfo {

    /**
     * Intent extra to store the profile. Format: UserHandle
     */
    static final String EXTRA_PROFILE = "profile";
    
    static final int NO_ID = -1;
    
    /**
     * The id in the settings database for this item
     */
    public long id = NO_ID;
    
    /**
     * One of {@link LauncherSettings.Favorites#ITEM_TYPE_APPLICATION},
     * {@link LauncherSettings.Favorites#ITEM_TYPE_SHORTCUT},
     * {@link LauncherSettings.Favorites#ITEM_TYPE_FOLDER}, or
     * {@link LauncherSettings.Favorites#ITEM_TYPE_APPWIDGET}.
     */
    public int itemType;
    
    /**
     * The id of the container that holds this item. For the desktop, this will be 
     * {@link LauncherSettings.Favorites#CONTAINER_DESKTOP}. For the all applications folder it
     * will be {@link #NO_ID} (since it is not stored in the settings DB). For user folders
     * it will be the id of the folder.
     */
    public long container = NO_ID;
    
    /**
     * Iindicates the screen in which the shortcut appears.
     */
    public long screenId = -1;
    
    /**
     * Indicates the X position of the associated cell.
     */
    public int cellX = -1;

    /**
     * Indicates the Y position of the associated cell.
     */
    public int cellY = -1;

    /**
     * Indicates the X cell span.
     */
    public int spanX = 1;

    /**
     * Indicates the Y cell span.
     */
    int spanY = 1;

    /**
     * Indicates the minimum X cell span.
     */
    public int minSpanX = 1;

    /**
     * Indicates the minimum Y cell span.
     */
    public int minSpanY = 1;

    /**
     * Indicates that this item needs to be updated in the db
     */
    public boolean requiresDbUpdate = false;

    /**
     * Title of the item
     */
    CharSequence title;

    /**
     * Content description of the item.
     */
    CharSequence contentDescription;

    /**
     * Indicates that this item has had it's position changed
     * because the grid size was made smaller and it could no longer fit.
     */
    public boolean wasMovedDueToReducedSpace = false;

    /**
     * The position of the item in a drag-and-drop operation.
     */
    int[] dropPos = null;

    UserHandleCompat user;

    ItemInfo() {
        user = UserHandleCompat.myUserHandle();
    }

    ItemInfo(ItemInfo info) {
        copyFrom(info);
        // tempdebug:
        LauncherModel.checkItemInfo(this);
    }

    public void copyFrom(ItemInfo info) {
        id = info.id;
        cellX = info.cellX;
        cellY = info.cellY;
        spanX = info.spanX;
        spanY = info.spanY;
        screenId = info.screenId;
        itemType = info.itemType;
        container = info.container;
        user = info.user;
        contentDescription = info.contentDescription;
    }

    public Intent getIntent() {
        throw new RuntimeException("Unexpected Intent");
    }

    /**
     * Write the fields of this item to the DB
     * 
     * @param context A context object to use for getting UserManagerCompat
     * @param values
     */

    void onAddToDatabase(Context context, ContentValues values) {
        values.put(LauncherSettings.BaseLauncherColumns.ITEM_TYPE, itemType);
        values.put(LauncherSettings.Favorites.CONTAINER, container);
        values.put(LauncherSettings.Favorites.SCREEN, screenId);
        values.put(LauncherSettings.Favorites.CELLX, cellX);
        values.put(LauncherSettings.Favorites.CELLY, cellY);
        values.put(LauncherSettings.Favorites.SPANX, spanX);
        values.put(LauncherSettings.Favorites.SPANY, spanY);
        long serialNumber = UserManagerCompat.getInstance(context).getSerialNumberForUser(user);
        values.put(LauncherSettings.Favorites.PROFILE_ID, serialNumber);

        if (screenId == Workspace.EXTRA_EMPTY_SCREEN_ID) {
            // We should never persist an item on the extra empty screen.
            throw new RuntimeException("Screen id should not be EXTRA_EMPTY_SCREEN_ID");
        }
    }

    void updateValuesWithCoordinates(ContentValues values, int cellX, int cellY) {
        values.put(LauncherSettings.Favorites.CELLX, cellX);
        values.put(LauncherSettings.Favorites.CELLY, cellY);
    }

    static byte[] flattenBitmap(Bitmap bitmap) {
        // Try go guesstimate how much space the icon will take when serialized
        // to avoid unnecessary allocations/copies during the write.
        int size = bitmap.getWidth() * bitmap.getHeight() * 4;
        ByteArrayOutputStream out = new ByteArrayOutputStream(size);
        try {
            bitmap.compress(Bitmap.CompressFormat.PNG, 100, out);
            out.flush();
            out.close();
            return out.toByteArray();
        } catch (IOException e) {
            Log.w("Favorite", "Could not write icon");
            return null;
        }
    }

    static void writeBitmap(ContentValues values, Bitmap bitmap) {
        if (bitmap != null) {
            byte[] data = flattenBitmap(bitmap);
            values.put(LauncherSettings.Favorites.ICON, data);
        }
    }

    /**
     * It is very important that sub-classes implement this if they contain any references
     * to the activity (anything in the view hierarchy etc.). If not, leaks can result since
     * ItemInfo objects persist across rotation and can hence leak by holding stale references
     * to the old view hierarchy / activity.
     */
    void unbind() {
    }

    @Override
    public String toString() {
        return "Item(id=" + this.id + " type=" + this.itemType + " container=" + this.container
            + " screen=" + screenId + " cellX=" + cellX + " cellY=" + cellY + " spanX=" + spanX
            + " spanY=" + spanY + " dropPos=" + Arrays.toString(dropPos)
            + " user=" + user + ")";
    }
}