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      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.keyboard;
     18 
     19 import android.view.Menu;
     20 import android.view.MenuItem;
     21 import android.view.View;
     22 import android.view.accessibility.AccessibilityNodeInfo;
     23 import android.view.accessibility.AccessibilityNodeInfo.AccessibilityAction;
     24 import android.widget.PopupMenu;
     25 import android.widget.PopupMenu.OnMenuItemClickListener;
     26 
     27 import com.android.launcher3.ItemInfo;
     28 import com.android.launcher3.Launcher;
     29 import com.android.launcher3.accessibility.LauncherAccessibilityDelegate;
     30 import com.android.launcher3.popup.PopupContainerWithArrow;
     31 
     32 import java.util.ArrayList;
     33 import java.util.Collections;
     34 import 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  */
     40 public 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