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.keyboard;
18
19import android.view.Menu;
20import android.view.MenuItem;
21import android.view.View;
22import android.view.accessibility.AccessibilityNodeInfo;
23import android.view.accessibility.AccessibilityNodeInfo.AccessibilityAction;
24import android.widget.PopupMenu;
25import android.widget.PopupMenu.OnMenuItemClickListener;
26
27import com.android.launcher3.popup.PopupContainerWithArrow;
28import com.android.launcher3.ItemInfo;
29import com.android.launcher3.Launcher;
30import com.android.launcher3.accessibility.LauncherAccessibilityDelegate;
31
32import java.util.ArrayList;
33import java.util.Collections;
34import java.util.List;
35
36/**
37 * Handles showing a popup menu with available custom actions for a launcher icon.
38 * This allows exposing various custom actions using keyboard shortcuts.
39 */
40public class CustomActionsPopup implements OnMenuItemClickListener {
41
42    private final Launcher mLauncher;
43    private final LauncherAccessibilityDelegate mDelegate;
44    private final View mIcon;
45
46    public CustomActionsPopup(Launcher launcher, View icon) {
47        mLauncher = launcher;
48        mIcon = icon;
49        PopupContainerWithArrow container = PopupContainerWithArrow.getOpen(launcher);
50        if (container != null) {
51            mDelegate = container.getAccessibilityDelegate();
52        } else {
53            mDelegate = launcher.getAccessibilityDelegate();
54        }
55    }
56
57    private List<AccessibilityAction> getActionList() {
58        if (mIcon == null || !(mIcon.getTag() instanceof ItemInfo)) {
59            return Collections.EMPTY_LIST;
60        }
61
62        AccessibilityNodeInfo info = AccessibilityNodeInfo.obtain();
63        mDelegate.addSupportedActions(mIcon, info, true);
64        List<AccessibilityAction> result = new ArrayList<>(info.getActionList());
65        info.recycle();
66        return result;
67    }
68
69    public boolean canShow() {
70        return !getActionList().isEmpty();
71    }
72
73    public boolean show() {
74        List<AccessibilityAction> actions = getActionList();
75        if (actions.isEmpty()) {
76            return false;
77        }
78
79        PopupMenu popup = new PopupMenu(mLauncher, mIcon);
80        popup.setOnMenuItemClickListener(this);
81        Menu menu = popup.getMenu();
82        for (AccessibilityAction action : actions) {
83            menu.add(Menu.NONE, action.getId(), Menu.NONE, action.getLabel());
84        }
85        popup.show();
86        return true;
87    }
88
89    @Override
90    public boolean onMenuItemClick(MenuItem menuItem) {
91        return mDelegate.performAction(mIcon, (ItemInfo) mIcon.getTag(), menuItem.getItemId());
92    }
93}
94