1 /*
2  * Copyright (C) 2015 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.LayoutInflater;
21 import android.view.View;
22 import android.view.ViewGroup;
23 import android.widget.AdapterView;
24 import android.widget.BaseAdapter;
25 import android.widget.Button;
26 import android.widget.CheckBox;
27 import android.widget.PopupWindow;
28 import android.widget.TextView;
29 
30 import androidx.appcompat.app.AppCompatActivity;
31 import androidx.appcompat.widget.ListPopupWindow;
32 
33 import com.example.android.supportv7.R;
34 
35 import java.text.SimpleDateFormat;
36 import java.util.Date;
37 
38 public class ListPopupWindowActivity extends AppCompatActivity {
39     private ViewGroup mContainer;
40 
41     private CheckBox mIsModal;
42 
43     private TextView mLog;
44 
45     private Button mButton;
46 
47     private ListPopupWindow mListPopupWindow;
48 
49     private BaseAdapter mListPopupAdapter;
50 
51     private SimpleDateFormat mDateFormat;
52 
53     @Override
onCreate(Bundle savedInstanceState)54     protected void onCreate(Bundle savedInstanceState) {
55         super.onCreate(savedInstanceState);
56 
57         setContentView(R.layout.list_popup_window_activity);
58 
59         mDateFormat = new SimpleDateFormat("HH:mm:ss.SSS");
60 
61         mContainer = findViewById(R.id.container);
62         mIsModal = (CheckBox) mContainer.findViewById(R.id.is_modal);
63         mLog = (TextView) mContainer.findViewById(R.id.log);
64         mButton = (Button) mContainer.findViewById(R.id.test_button);
65 
66         mButton.setOnClickListener(new View.OnClickListener() {
67             @Override
68             public void onClick(View v) {
69                 mListPopupWindow = new ListPopupWindow(mContainer.getContext());
70 
71                 final String[] POPUP_CONTENT =
72                         new String[] { "Alice", "Bob", "Charlie", "Deirdre", "El" };
73                 mListPopupAdapter = new BaseAdapter() {
74                     class ViewHolder {
75                         private TextView title;
76                         private TextView shortcut;
77                     }
78 
79                     @Override
80                     public int getCount() {
81                         return POPUP_CONTENT.length;
82                     }
83 
84                     @Override
85                     public Object getItem(int position) {
86                         return POPUP_CONTENT[position];
87                     }
88 
89                     @Override
90                     public long getItemId(int position) {
91                         return position;
92                     }
93 
94                     @Override
95                     public View getView(int position, View convertView, ViewGroup parent) {
96                         if (convertView == null) {
97                             convertView = LayoutInflater.from(parent.getContext()).inflate(
98                                     R.layout.abc_popup_menu_item_layout, parent, false);
99                             ViewHolder viewHolder = new ViewHolder();
100                             viewHolder.title = (TextView) convertView.findViewById(R.id.title);
101                             viewHolder.shortcut =
102                                     (TextView) convertView.findViewById(R.id.shortcut);
103                             convertView.setTag(viewHolder);
104                         }
105 
106                         ViewHolder viewHolder = (ViewHolder) convertView.getTag();
107                         viewHolder.title.setText(POPUP_CONTENT[position]);
108                         viewHolder.shortcut.setVisibility(View.GONE);
109                         return convertView;
110                     }
111                 };
112 
113                 mListPopupWindow.setAdapter(mListPopupAdapter);
114                 mListPopupWindow.setAnchorView(mButton);
115 
116                 // Register a listener to be notified when an item in our popup window has
117                 // been clicked.
118                 mListPopupWindow.setOnItemClickListener(new AdapterView.OnItemClickListener() {
119                     @Override
120                     public void onItemClick(AdapterView<?> parent, View view, int position,
121                             long id) {
122                         addToLog("Item #"+ position + " clicked");
123                         addToLog("Dismissing popup window");
124                         mListPopupWindow.dismiss();
125                     }
126                 });
127 
128                 // Register a listener to be notified when our popup window is dismissed.
129                 mListPopupWindow.setOnDismissListener(new PopupWindow.OnDismissListener() {
130                     @Override
131                     public void onDismiss() {
132                         addToLog("Popup window dismissed");
133                     }
134                 });
135 
136                 // Set popup window modality based on the current checkbox state.
137                 mListPopupWindow.setModal(mIsModal.isChecked());
138 
139                 // and show it
140                 mListPopupWindow.show();
141             }
142         });
143 
144         // Set up a click listener on the log text view. When the popup window is in modal
145         // mode and is dismissed by tapping outside of its bounds *and* over the log text
146         // view bounds, we should *not* get this click listener invoked.
147         mLog.setOnClickListener(new View.OnClickListener() {
148             @Override
149             public void onClick(View v) {
150                 addToLog("Log view clicked");
151             }
152         });
153     }
154 
addToLog(String toLog)155     private void addToLog(String toLog) {
156         String toPrepend = mDateFormat.format(new Date()) + " " + toLog + "\n";
157         mLog.setText(toPrepend + mLog.getText());
158     }
159 }
160