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 com.android.launcher3.accessibility;
18
19import android.content.Context;
20import android.os.Bundle;
21import android.view.View;
22import android.view.View.AccessibilityDelegate;
23import android.view.accessibility.AccessibilityNodeInfo;
24import android.view.accessibility.AccessibilityNodeInfo.AccessibilityAction;
25
26import com.android.launcher3.Launcher;
27import com.android.launcher3.R;
28import com.android.launcher3.Utilities;
29
30/**
31 * Accessibility delegate with actions pointing to various Overview entry points.
32 */
33public class OverviewAccessibilityDelegate extends AccessibilityDelegate {
34
35    private static final int OVERVIEW = R.string.accessibility_action_overview;
36    private static final int WALLPAPERS = R.string.wallpaper_button_text;
37    private static final int WIDGETS = R.string.widget_button_text;
38    private static final int SETTINGS = R.string.settings_button_text;
39
40    @Override
41    public void onInitializeAccessibilityNodeInfo(View host, AccessibilityNodeInfo info) {
42        super.onInitializeAccessibilityNodeInfo(host, info);
43
44        Context context = host.getContext();
45        info.addAction(new AccessibilityAction(OVERVIEW, context.getText(OVERVIEW)));
46
47        if (Utilities.isWallpaperAllowed(context)) {
48            info.addAction(new AccessibilityAction(WALLPAPERS, context.getText(WALLPAPERS)));
49        }
50        info.addAction(new AccessibilityAction(WIDGETS, context.getText(WIDGETS)));
51        info.addAction(new AccessibilityAction(SETTINGS, context.getText(SETTINGS)));
52    }
53
54    @Override
55    public boolean performAccessibilityAction(View host, int action, Bundle args) {
56        Launcher launcher = Launcher.getLauncher(host.getContext());
57        if (action == OVERVIEW) {
58            launcher.showOverviewMode(true);
59            return true;
60        } else if (action == WALLPAPERS) {
61            launcher.onClickWallpaperPicker(host);
62            return true;
63        } else if (action == WIDGETS) {
64            launcher.onClickAddWidgetButton(host);
65            return true;
66        } else if (action == SETTINGS) {
67            launcher.onClickSettingsButton(host);
68            return true;
69        }
70        return super.performAccessibilityAction(host, action, args);
71    }
72}
73