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.tv.dialog;
18 
19 import android.app.Dialog;
20 import android.content.DialogInterface;
21 import android.os.Bundle;
22 import android.os.Handler;
23 import android.view.KeyEvent;
24 import android.view.LayoutInflater;
25 import android.view.View;
26 import android.view.ViewGroup;
27 import com.android.tv.R;
28 import java.util.concurrent.TimeUnit;
29 
30 public class HalfSizedDialogFragment extends SafeDismissDialogFragment {
31     public static final String DIALOG_TAG = HalfSizedDialogFragment.class.getSimpleName();
32     public static final String TRACKER_LABEL = "Half sized dialog";
33 
34     private static final long AUTO_DISMISS_TIME_THRESHOLD_MS = TimeUnit.SECONDS.toMillis(30);
35 
36     private OnActionClickListener mOnActionClickListener;
37 
38     private Handler mHandler = new Handler();
39     private Runnable mAutoDismisser =
40             new Runnable() {
41                 @Override
42                 public void run() {
43                     dismiss();
44                 }
45             };
46 
47     @Override
onCreateView( LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState)48     public View onCreateView(
49             LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
50         return inflater.inflate(R.layout.halfsized_dialog, container, false);
51     }
52 
53     @Override
onStart()54     public void onStart() {
55         super.onStart();
56         mHandler.postDelayed(mAutoDismisser, AUTO_DISMISS_TIME_THRESHOLD_MS);
57     }
58 
59     @Override
onPause()60     public void onPause() {
61         super.onPause();
62         if (mOnActionClickListener != null) {
63             // Dismisses the dialog to prevent the callback being forgotten during
64             // fragment re-creating.
65             dismiss();
66         }
67     }
68 
69     @Override
onStop()70     public void onStop() {
71         super.onStop();
72         mHandler.removeCallbacks(mAutoDismisser);
73     }
74 
75     @Override
onCreateDialog(Bundle savedInstanceState)76     public Dialog onCreateDialog(Bundle savedInstanceState) {
77         Dialog dialog = super.onCreateDialog(savedInstanceState);
78         dialog.setOnKeyListener(
79                 new DialogInterface.OnKeyListener() {
80                     public boolean onKey(DialogInterface dialog, int keyCode, KeyEvent keyEvent) {
81                         mHandler.removeCallbacks(mAutoDismisser);
82                         mHandler.postDelayed(mAutoDismisser, AUTO_DISMISS_TIME_THRESHOLD_MS);
83                         return false;
84                     }
85                 });
86         return dialog;
87     }
88 
89     @Override
getTheme()90     public int getTheme() {
91         return R.style.Theme_TV_dialog_HalfSizedDialog;
92     }
93 
94     @Override
getTrackerLabel()95     public String getTrackerLabel() {
96         return TRACKER_LABEL;
97     }
98 
99     /**
100      * Sets {@link OnActionClickListener} for the dialog fragment. If listener is set, the dialog
101      * will be automatically closed when it's paused to prevent the fragment being re-created by the
102      * framework, which will result the listener being forgotten.
103      */
setOnActionClickListener(OnActionClickListener listener)104     public void setOnActionClickListener(OnActionClickListener listener) {
105         mOnActionClickListener = listener;
106     }
107 
108     /** Returns {@link OnActionClickListener} for sub-classes or any inner fragments. */
getOnActionClickListener()109     protected OnActionClickListener getOnActionClickListener() {
110         return mOnActionClickListener;
111     }
112 
113     /**
114      * An interface to provide callbacks for half-sized dialogs. Subclasses or inner fragments
115      * should invoke {@link OnActionClickListener#onActionClick(long)} and provide the identifier of
116      * the action user clicked.
117      */
118     public interface OnActionClickListener {
onActionClick(long actionId)119         void onActionClick(long actionId);
120     }
121 }
122