1 /* 2 * Copyright (C) 2016 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file 5 * except in compliance with the License. You may obtain a copy of the License at 6 * 7 * http://www.apache.org/licenses/LICENSE-2.0 8 * 9 * Unless required by applicable law or agreed to in writing, software distributed under the 10 * License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY 11 * KIND, either express or implied. See the License for the specific language governing 12 * permissions and limitations under the License. 13 */ 14 15 package com.android.systemui; 16 17 import android.annotation.Nullable; 18 import android.content.Context; 19 import android.content.res.Configuration; 20 import android.content.res.TypedArray; 21 import android.util.AttributeSet; 22 import android.view.LayoutInflater; 23 import android.view.View; 24 import android.widget.FrameLayout; 25 26 import com.android.systemui.statusbar.policy.ConfigurationController; 27 28 import java.util.ArrayList; 29 import java.util.List; 30 31 /** 32 * Custom {@link FrameLayout} that re-inflates when changes to {@link Configuration} happen. 33 * Currently supports changes to density, asset path, and locale. 34 */ 35 public class AutoReinflateContainer extends FrameLayout implements 36 ConfigurationController.ConfigurationListener { 37 38 private final List<InflateListener> mInflateListeners = new ArrayList<>(); 39 private final int mLayout; 40 41 public AutoReinflateContainer(Context context, @Nullable AttributeSet attrs) { 42 super(context, attrs); 43 44 TypedArray a = context.obtainStyledAttributes(attrs, R.styleable.AutoReinflateContainer); 45 if (!a.hasValue(R.styleable.AutoReinflateContainer_android_layout)) { 46 throw new IllegalArgumentException("AutoReinflateContainer must contain a layout"); 47 } 48 mLayout = a.getResourceId(R.styleable.AutoReinflateContainer_android_layout, 0); 49 a.recycle(); 50 inflateLayout(); 51 } 52 53 @Override 54 protected void onAttachedToWindow() { 55 super.onAttachedToWindow(); 56 Dependency.get(ConfigurationController.class).addCallback(this); 57 } 58 59 @Override 60 protected void onDetachedFromWindow() { 61 super.onDetachedFromWindow(); 62 Dependency.get(ConfigurationController.class).removeCallback(this); 63 } 64 65 protected void inflateLayoutImpl() { 66 LayoutInflater.from(getContext()).inflate(mLayout, this); 67 } 68 69 public void inflateLayout() { 70 removeAllViews(); 71 inflateLayoutImpl(); 72 final int N = mInflateListeners.size(); 73 for (int i = 0; i < N; i++) { 74 mInflateListeners.get(i).onInflated(getChildAt(0)); 75 } 76 } 77 78 public void addInflateListener(InflateListener listener) { 79 mInflateListeners.add(listener); 80 listener.onInflated(getChildAt(0)); 81 } 82 83 @Override 84 public void onDensityOrFontScaleChanged() { 85 inflateLayout(); 86 } 87 88 @Override 89 public void onOverlayChanged() { 90 inflateLayout(); 91 } 92 93 @Override 94 public void onUiModeChanged() { 95 inflateLayout(); 96 } 97 98 @Override 99 public void onLocaleListChanged() { 100 inflateLayout(); 101 } 102 103 public interface InflateListener { 104 /** 105 * Called whenever a new view is inflated. 106 */ 107 void onInflated(View v); 108 } 109 } 110
