1 /* 2 * Copyright (C) 2013 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 android.support.v7.app; 18 19 import android.app.Dialog; 20 import android.content.Context; 21 import android.content.res.Configuration; 22 import android.os.Bundle; 23 import android.support.v4.app.DialogFragment; 24 import android.support.v7.media.MediaRouteSelector; 25 26 /** 27 * Media route chooser dialog fragment. 28 * <p> 29 * Creates a {@link MediaRouteChooserDialog}. The application may subclass 30 * this dialog fragment to customize the media route chooser dialog. 31 * </p> 32 */ 33 public class MediaRouteChooserDialogFragment extends DialogFragment { 34 private final String ARGUMENT_SELECTOR = "selector"; 35 36 private MediaRouteChooserDialog mDialog; 37 private MediaRouteSelector mSelector; 38 39 /** 40 * Creates a media route chooser dialog fragment. 41 * <p> 42 * All subclasses of this class must also possess a default constructor. 43 * </p> 44 */ MediaRouteChooserDialogFragment()45 public MediaRouteChooserDialogFragment() { 46 setCancelable(true); 47 } 48 49 /** 50 * Gets the media route selector for filtering the routes that the user can select. 51 * 52 * @return The selector, never null. 53 */ getRouteSelector()54 public MediaRouteSelector getRouteSelector() { 55 ensureRouteSelector(); 56 return mSelector; 57 } 58 ensureRouteSelector()59 private void ensureRouteSelector() { 60 if (mSelector == null) { 61 Bundle args = getArguments(); 62 if (args != null) { 63 mSelector = MediaRouteSelector.fromBundle(args.getBundle(ARGUMENT_SELECTOR)); 64 } 65 if (mSelector == null) { 66 mSelector = MediaRouteSelector.EMPTY; 67 } 68 } 69 } 70 71 /** 72 * Sets the media route selector for filtering the routes that the user can select. 73 * This method must be called before the fragment is added. 74 * 75 * @param selector The selector to set. 76 */ setRouteSelector(MediaRouteSelector selector)77 public void setRouteSelector(MediaRouteSelector selector) { 78 if (selector == null) { 79 throw new IllegalArgumentException("selector must not be null"); 80 } 81 82 ensureRouteSelector(); 83 if (!mSelector.equals(selector)) { 84 mSelector = selector; 85 86 Bundle args = getArguments(); 87 if (args == null) { 88 args = new Bundle(); 89 } 90 args.putBundle(ARGUMENT_SELECTOR, selector.asBundle()); 91 setArguments(args); 92 93 MediaRouteChooserDialog dialog = (MediaRouteChooserDialog)getDialog(); 94 if (dialog != null) { 95 dialog.setRouteSelector(selector); 96 } 97 } 98 } 99 100 /** 101 * Called when the chooser dialog is being created. 102 * <p> 103 * Subclasses may override this method to customize the dialog. 104 * </p> 105 */ onCreateChooserDialog( Context context, Bundle savedInstanceState)106 public MediaRouteChooserDialog onCreateChooserDialog( 107 Context context, Bundle savedInstanceState) { 108 return new MediaRouteChooserDialog(context); 109 } 110 111 @Override onCreateDialog(Bundle savedInstanceState)112 public Dialog onCreateDialog(Bundle savedInstanceState) { 113 mDialog = onCreateChooserDialog(getContext(), savedInstanceState); 114 mDialog.setRouteSelector(getRouteSelector()); 115 return mDialog; 116 } 117 118 @Override onConfigurationChanged(Configuration newConfig)119 public void onConfigurationChanged(Configuration newConfig) { 120 super.onConfigurationChanged(newConfig); 121 if (mDialog != null) { 122 mDialog.updateLayout(); 123 } 124 } 125 } 126