1/*
2 * Copyright (C) 2016 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 android.appwidget;
18
19import android.os.Parcel;
20import android.os.Parcelable;
21import android.widget.RemoteViews;
22
23/**
24 * @hide
25 */
26public class PendingHostUpdate implements Parcelable {
27
28    static final int TYPE_VIEWS_UPDATE = 0;
29    static final int TYPE_PROVIDER_CHANGED = 1;
30    static final int TYPE_VIEW_DATA_CHANGED = 2;
31
32    final int appWidgetId;
33    final int type;
34    RemoteViews views;
35    AppWidgetProviderInfo widgetInfo;
36    int viewId;
37
38    public static PendingHostUpdate updateAppWidget(int appWidgetId, RemoteViews views) {
39        PendingHostUpdate update = new PendingHostUpdate(appWidgetId, TYPE_VIEWS_UPDATE);
40        update.views = views;
41        return update;
42    }
43
44    public static PendingHostUpdate providerChanged(int appWidgetId, AppWidgetProviderInfo info) {
45        PendingHostUpdate update = new PendingHostUpdate(appWidgetId, TYPE_PROVIDER_CHANGED);
46        update.widgetInfo = info;
47        return update;
48    }
49
50    public static PendingHostUpdate viewDataChanged(int appWidgetId, int viewId) {
51        PendingHostUpdate update = new PendingHostUpdate(appWidgetId, TYPE_VIEW_DATA_CHANGED);
52        update.viewId = viewId;
53        return update;
54    }
55
56    private PendingHostUpdate(int appWidgetId, int type) {
57        this.appWidgetId = appWidgetId;
58        this.type = type;
59    }
60
61    private PendingHostUpdate(Parcel in) {
62        appWidgetId = in.readInt();
63        type = in.readInt();
64
65        switch (type) {
66            case TYPE_VIEWS_UPDATE:
67                if (0 != in.readInt()) {
68                    views = new RemoteViews(in);
69                }
70                break;
71            case TYPE_PROVIDER_CHANGED:
72                if (0 != in.readInt()) {
73                    widgetInfo = new AppWidgetProviderInfo(in);
74                }
75                break;
76            case TYPE_VIEW_DATA_CHANGED:
77                viewId = in.readInt();
78        }
79    }
80
81    @Override
82    public int describeContents() {
83        return 0;
84    }
85
86    @Override
87    public void writeToParcel(Parcel dest, int flags) {
88        dest.writeInt(appWidgetId);
89        dest.writeInt(type);
90        switch (type) {
91            case TYPE_VIEWS_UPDATE:
92                writeNullParcelable(views, dest, flags);
93                break;
94            case TYPE_PROVIDER_CHANGED:
95                writeNullParcelable(widgetInfo, dest, flags);
96                break;
97            case TYPE_VIEW_DATA_CHANGED:
98                dest.writeInt(viewId);
99                break;
100        }
101    }
102
103    private void writeNullParcelable(Parcelable p, Parcel dest, int flags) {
104        if (p != null) {
105            dest.writeInt(1);
106            p.writeToParcel(dest, flags);
107        } else {
108            dest.writeInt(0);
109        }
110    }
111
112    /**
113     * Parcelable.Creator that instantiates PendingHostUpdate objects
114     */
115    public static final Parcelable.Creator<PendingHostUpdate> CREATOR
116            = new Parcelable.Creator<PendingHostUpdate>() {
117        public PendingHostUpdate createFromParcel(Parcel parcel) {
118            return new PendingHostUpdate(parcel);
119        }
120
121        public PendingHostUpdate[] newArray(int size) {
122            return new PendingHostUpdate[size];
123        }
124    };
125}
126