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.tv.dialog;
18
19import android.app.Dialog;
20import android.content.DialogInterface;
21import android.os.Bundle;
22import android.os.Handler;
23import android.view.KeyEvent;
24import android.view.LayoutInflater;
25import android.view.View;
26import android.view.ViewGroup;
27
28import com.android.tv.R;
29
30import java.util.concurrent.TimeUnit;
31
32public class HalfSizedDialogFragment extends SafeDismissDialogFragment {
33    public static final String DIALOG_TAG = HalfSizedDialogFragment.class.getSimpleName();
34    public static final String TRACKER_LABEL = "Half sized dialog";
35
36    private static final long AUTO_DISMISS_TIME_THRESHOLD_MS = TimeUnit.SECONDS.toMillis(30);
37
38    private OnActionClickListener mOnActionClickListener;
39
40    private Handler mHandler = new Handler();
41    private Runnable mAutoDismisser = new Runnable() {
42        @Override
43        public void run() {
44            dismiss();
45        }
46    };
47
48    @Override
49    public View onCreateView(LayoutInflater inflater, ViewGroup container,
50            Bundle savedInstanceState) {
51        return inflater.inflate(R.layout.halfsized_dialog, container, false);
52    }
53
54    @Override
55    public void onStart() {
56        super.onStart();
57        mHandler.postDelayed(mAutoDismisser, AUTO_DISMISS_TIME_THRESHOLD_MS);
58    }
59
60    @Override
61    public void onPause() {
62        super.onPause();
63        if (mOnActionClickListener != null) {
64            // Dismisses the dialog to prevent the callback being forgotten during
65            // fragment re-creating.
66            dismiss();
67        }
68    }
69
70    @Override
71    public void onStop() {
72        super.onStop();
73        mHandler.removeCallbacks(mAutoDismisser);
74    }
75
76    @Override
77    public Dialog onCreateDialog(Bundle savedInstanceState) {
78        Dialog dialog = super.onCreateDialog(savedInstanceState);
79        dialog.setOnKeyListener(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
90    public int getTheme() {
91        return R.style.Theme_TV_dialog_HalfSizedDialog;
92    }
93
94    @Override
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
102     * the framework, which will result the listener being forgotten.
103     */
104    public void setOnActionClickListener(OnActionClickListener listener) {
105        mOnActionClickListener = listener;
106    }
107
108    /**
109     * Returns {@link OnActionClickListener} for sub-classes or any inner fragments.
110     */
111    protected OnActionClickListener getOnActionClickListener() {
112        return mOnActionClickListener;
113    }
114
115    /**
116     * An interface to provide callbacks for half-sized dialogs. Subclasses or inner fragments
117     * should invoke {@link OnActionClickListener#onActionClick(long)} and provide the identifier
118     * of the action user clicked.
119     */
120    public interface OnActionClickListener {
121        void onActionClick(long actionId);
122    }
123}