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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.example.android.supportv7.widget;
     18 
     19 import android.os.Bundle;
     20 import android.view.ContextMenu;
     21 import android.view.Gravity;
     22 import android.view.Menu;
     23 import android.view.MenuInflater;
     24 import android.view.MenuItem;
     25 import android.view.View;
     26 import android.view.ViewGroup;
     27 import android.widget.Button;
     28 import android.widget.TextView;
     29 
     30 import androidx.appcompat.app.AppCompatActivity;
     31 import androidx.appcompat.widget.PopupMenu;
     32 import androidx.appcompat.widget.SwitchCompat;
     33 import androidx.core.view.MenuCompat;
     34 import androidx.core.view.MenuItemCompat;
     35 
     36 import com.example.android.supportv7.R;
     37 
     38 import java.text.SimpleDateFormat;
     39 import java.util.Date;
     40 
     41 public class PopupMenuActivity extends AppCompatActivity {
     42     private TextView mLog;
     43 
     44     private SimpleDateFormat mDateFormat;
     45 
     46     @Override
     47     protected void onCreate(Bundle savedInstanceState) {
     48         super.onCreate(savedInstanceState);
     49 
     50         setContentView(R.layout.popup_menu_activity);
     51 
     52         mDateFormat = new SimpleDateFormat("HH:mm:ss.SSS");
     53 
     54         final ViewGroup container = findViewById(R.id.container);
     55         mLog = (TextView) container.findViewById(R.id.log);
     56 
     57         final SwitchCompat elevationToggle = (SwitchCompat) container.findViewById(
     58                 R.id.elevation_toggle);
     59         final Button button = (Button) container.findViewById(R.id.test_button);
     60         button.setOnClickListener(new View.OnClickListener() {
     61             @Override
     62             public void onClick(View v) {
     63                 // Do we need to use a custom style that removes elevation?
     64                 boolean useDefaultElevation = elevationToggle.isChecked();
     65 
     66                 PopupMenu popupMenu = null;
     67                 if (useDefaultElevation) {
     68                     popupMenu = new PopupMenu(container.getContext(), button);
     69                 } else {
     70                     popupMenu = new PopupMenu(container.getContext(), button, Gravity.NO_GRAVITY,
     71                             0, R.style.CustomPopupNoElevation);
     72                 }
     73 
     74                 final MenuInflater menuInflater = popupMenu.getMenuInflater();
     75                 populateMenu(menuInflater, popupMenu.getMenu());
     76                 final MenuItem editItem = popupMenu.getMenu().findItem(R.id.action_edit);
     77                 MenuItemCompat.setContentDescription(editItem,
     78                         getString(R.string.popup_menu_edit_description));
     79                 MenuItemCompat.setTooltipText(editItem,
     80                         getString(R.string.popup_menu_edit_tooltip));
     81 
     82                 // Register a listener to be notified when a menu item in our popup menu has
     83                 // been clicked.
     84                 popupMenu.setOnMenuItemClickListener(new PopupMenu.OnMenuItemClickListener() {
     85                     @Override
     86                     public boolean onMenuItemClick(MenuItem item) {
     87                         addToLog("Item '"+ item.getTitle() + "' clicked");
     88                         return true;
     89                     }
     90                 });
     91 
     92                 // Register a listener to be notified when our popup menu is dismissed.
     93                 popupMenu.setOnDismissListener(new PopupMenu.OnDismissListener() {
     94                     @Override
     95                     public void onDismiss(PopupMenu menu) {
     96                         addToLog("Popup menu dismissed");
     97                     }
     98                 });
     99 
    100                 // Show the popup menu
    101                 popupMenu.show();
    102             }
    103         });
    104         // Long tap will show a context menu which is always a platform (not support) menu.
    105         registerForContextMenu(button);
    106     }
    107 
    108     @Override
    109     public void onCreateContextMenu(ContextMenu menu, View v,
    110             ContextMenu.ContextMenuInfo menuInfo) {
    111         populateMenu(getMenuInflater(), menu);
    112     }
    113 
    114     private void populateMenu(MenuInflater menuInflater, Menu menu) {
    115         SwitchCompat dividersToggle = findViewById(R.id.dividers_toggle);
    116         menuInflater.inflate(R.menu.popup_menu, menu);
    117         MenuCompat.setGroupDividerEnabled(menu, dividersToggle.isChecked());
    118     }
    119 
    120     private void addToLog(String toLog) {
    121         String toPrepend = mDateFormat.format(new Date()) + " " + toLog + "\n";
    122         mLog.setText(toPrepend + mLog.getText());
    123     }
    124 }
    125