| /* |
| * Copyright (C) 2015 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 android.support.v7.widget; |
| |
| import android.content.Context; |
| import android.content.ContextWrapper; |
| import android.content.res.Resources; |
| import android.graphics.drawable.Drawable; |
| |
| /** |
| * A {@link android.content.ContextWrapper} which returns a tint-aware |
| * {@link android.content.res.Resources} instance from {@link #getResources()}. |
| */ |
| class TintContextWrapper extends ContextWrapper { |
| |
| public static Context wrap(Context context) { |
| if (!(context instanceof TintContextWrapper)) { |
| context = new TintContextWrapper(context); |
| } |
| return context; |
| } |
| |
| private Resources mResources; |
| |
| private TintContextWrapper(Context base) { |
| super(base); |
| } |
| |
| @Override |
| public Resources getResources() { |
| if (mResources == null) { |
| mResources = new TintResources(super.getResources()); |
| } |
| return mResources; |
| } |
| |
| /** |
| * This class allows us to intercept calls so that we can tint resources (if applicable). |
| */ |
| class TintResources extends ResourcesWrapper { |
| public TintResources(Resources resources) { |
| super(resources); |
| } |
| |
| /** |
| * We intercept this call so that we tint the result (if applicable). This is needed for |
| * things like {@link android.graphics.drawable.DrawableContainer}s which can retrieve |
| * their children via this method. |
| */ |
| @Override |
| public Drawable getDrawable(int id) throws NotFoundException { |
| Drawable d = super.getDrawable(id); |
| if (d != null) { |
| AppCompatDrawableManager.get().tintDrawableUsingColorFilter( |
| TintContextWrapper.this, id, d); |
| } |
| return d; |
| } |
| } |
| } |