| /* |
| * Copyright (C) 2016 The Android Open Source Project |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file |
| * except in compliance with the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software distributed under the |
| * License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY |
| * KIND, either express or implied. See the License for the specific language governing |
| * permissions and limitations under the License. |
| */ |
| |
| package com.android.systemui; |
| |
| import android.annotation.Nullable; |
| import android.content.Context; |
| import android.content.res.Configuration; |
| import android.content.res.TypedArray; |
| import android.util.AttributeSet; |
| import android.view.LayoutInflater; |
| import android.view.View; |
| import android.widget.FrameLayout; |
| |
| import java.util.ArrayList; |
| import java.util.List; |
| |
| public class DensityContainer extends FrameLayout { |
| |
| private final List<InflateListener> mInflateListeners = new ArrayList<>(); |
| private final int mLayout; |
| private int mDensity; |
| |
| public DensityContainer(Context context, @Nullable AttributeSet attrs) { |
| super(context, attrs); |
| |
| mDensity = context.getResources().getConfiguration().densityDpi; |
| |
| TypedArray a = context.obtainStyledAttributes(attrs, R.styleable.DensityContainer); |
| if (!a.hasValue(R.styleable.DensityContainer_android_layout)) { |
| throw new IllegalArgumentException("DensityContainer must contain a layout"); |
| } |
| mLayout = a.getResourceId(R.styleable.DensityContainer_android_layout, 0); |
| inflateLayout(); |
| } |
| |
| @Override |
| protected void onConfigurationChanged(Configuration newConfig) { |
| super.onConfigurationChanged(newConfig); |
| int density = newConfig.densityDpi; |
| if (density != mDensity) { |
| mDensity = density; |
| inflateLayout(); |
| } |
| } |
| |
| private void inflateLayout() { |
| removeAllViews(); |
| LayoutInflater.from(getContext()).inflate(mLayout, this); |
| final int N = mInflateListeners.size(); |
| for (int i = 0; i < N; i++) { |
| mInflateListeners.get(i).onInflated(getChildAt(0)); |
| } |
| } |
| |
| public void addInflateListener(InflateListener listener) { |
| mInflateListeners.add(listener); |
| listener.onInflated(getChildAt(0)); |
| } |
| |
| public interface InflateListener { |
| /** |
| * Called whenever a new view is inflated. |
| */ |
| void onInflated(View v); |
| } |
| } |