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.android.tv.dialog; 18 19 import android.app.Activity; 20 import android.app.Dialog; 21 import android.app.DialogFragment; 22 import android.content.Context; 23 import android.os.Bundle; 24 import android.view.KeyEvent; 25 26 import com.android.tv.MainActivity; 27 import com.android.tv.TvApplication; 28 import com.android.tv.analytics.HasTrackerLabel; 29 import com.android.tv.analytics.Tracker; 30 31 /** 32 * Provides the safe dismiss feature regardless of the DialogFragment's life cycle. 33 */ 34 public abstract class SafeDismissDialogFragment extends DialogFragment 35 implements HasTrackerLabel { 36 private MainActivity mActivity; 37 private boolean mAttached = false; 38 private boolean mDismissPending = false; 39 private Tracker mTracker; 40 41 @Override onCreateDialog(Bundle savedInstanceState)42 public Dialog onCreateDialog(Bundle savedInstanceState) { 43 return new TvDialog(getActivity(), getTheme()); 44 } 45 46 @Override onAttach(Activity activity)47 public void onAttach(Activity activity) { 48 super.onAttach(activity); 49 mAttached = true; 50 if (activity instanceof MainActivity) { 51 mActivity = (MainActivity) activity; 52 } 53 mTracker = TvApplication.getSingletons(activity).getTracker(); 54 if (mDismissPending) { 55 mDismissPending = false; 56 dismiss(); 57 } 58 } 59 60 @Override onResume()61 public void onResume() { 62 super.onResume(); 63 mTracker.sendScreenView(getTrackerLabel()); 64 } 65 66 @Override onDestroy()67 public void onDestroy() { 68 if (mActivity != null) { 69 mActivity.getOverlayManager().onDialogDestroyed(); 70 } 71 super.onDestroy(); 72 } 73 74 @Override onDetach()75 public void onDetach() { 76 super.onDetach(); 77 mAttached = false; 78 mTracker = null; 79 } 80 81 /** 82 * Dismiss safely regardless of the DialogFragment's life cycle. 83 */ 84 @Override dismiss()85 public void dismiss() { 86 if (!mAttached) { 87 // dismiss() before getFragmentManager() is set cause NPE in dismissInternal(). 88 // FragmentManager is set when a fragment is used in a transaction, 89 // so wait here until we can dismiss safely. 90 mDismissPending = true; 91 } else { 92 super.dismiss(); 93 } 94 } 95 96 protected class TvDialog extends Dialog { TvDialog(Context context, int theme)97 public TvDialog(Context context, int theme) { 98 super(context, theme); 99 } 100 101 @Override onKeyUp(int keyCode, KeyEvent event)102 public boolean onKeyUp(int keyCode, KeyEvent event) { 103 // When a dialog is showing, key events are handled by the dialog instead of 104 // MainActivity. Therefore, unless a key is a global key, it should be handled here. 105 if (mAttached && keyCode == KeyEvent.KEYCODE_SEARCH && mActivity != null) { 106 mActivity.showSearchActivity(); 107 return true; 108 } 109 return super.onKeyUp(keyCode, event); 110 } 111 } 112 } 113