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 17 package com.android.launcher3.accessibility; 18 19 import android.content.Context; 20 import android.os.Bundle; 21 import android.view.View; 22 import android.view.View.AccessibilityDelegate; 23 import android.view.accessibility.AccessibilityNodeInfo; 24 import android.view.accessibility.AccessibilityNodeInfo.AccessibilityAction; 25 26 import com.android.launcher3.Launcher; 27 import com.android.launcher3.R; 28 import com.android.launcher3.Utilities; 29 30 /** 31 * Accessibility delegate with actions pointing to various Overview entry points. 32 */ 33 public 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 onInitializeAccessibilityNodeInfo(View host, AccessibilityNodeInfo info)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 performAccessibilityAction(View host, int action, Bundle args)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