| /* |
| * Copyright (C) 2017 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.setupwizardlib.util; |
| |
| import android.content.Context; |
| import android.content.res.Resources.Theme; |
| import androidx.annotation.StyleRes; |
| import android.view.ContextThemeWrapper; |
| |
| /** |
| * Same as {@link ContextThemeWrapper}, but the base context's theme attributes take precedence over |
| * the wrapper context's. This is used to provide default values for theme attributes referenced in |
| * layouts, to remove the risk of crashing the client because of using the wrong theme. |
| */ |
| public class FallbackThemeWrapper extends ContextThemeWrapper { |
| |
| /** |
| * Creates a new context wrapper with the specified theme. |
| * |
| * <p>The specified theme will be applied as fallbacks to the base context's theme. Any attributes |
| * defined in the base context's theme will retain their original values. Otherwise values in |
| * {@code themeResId} will be used. |
| * |
| * @param base The base context. |
| * @param themeResId The theme to use as fallback. |
| */ |
| public FallbackThemeWrapper(Context base, @StyleRes int themeResId) { |
| super(base, themeResId); |
| } |
| |
| /** {@inheritDoc} */ |
| @Override |
| protected void onApplyThemeResource(Theme theme, int resId, boolean first) { |
| theme.applyStyle(resId, false /* force */); |
| } |
| } |