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/*
* 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 */);
}
}
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