51 lines
1.8 KiB
Java
51 lines
1.8 KiB
Java
/*
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* Copyright (C) 2017 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package com.google.android.setupcompat.internal;
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import android.content.Context;
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import android.content.res.Resources.Theme;
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import android.view.ContextThemeWrapper;
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import androidx.annotation.StyleRes;
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/**
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* Same as {@link ContextThemeWrapper}, but the base context's theme attributes take precedence over
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* the wrapper context's. This is used to provide default values for theme attributes referenced in
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* layouts, to remove the risk of crashing the client because of using the wrong theme.
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*/
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public class FallbackThemeWrapper extends ContextThemeWrapper {
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/**
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* Creates a new context wrapper with the specified theme.
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*
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* <p>The specified theme will be applied as fallbacks to the base context's theme. Any attributes
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* defined in the base context's theme will retain their original values. Otherwise values in
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* {@code themeResId} will be used.
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*
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* @param base The base context.
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* @param themeResId The theme to use as fallback.
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*/
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public FallbackThemeWrapper(Context base, @StyleRes int themeResId) {
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super(base, themeResId);
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}
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/** {@inheritDoc} */
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@Override
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protected void onApplyThemeResource(Theme theme, int resId, boolean first) {
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theme.applyStyle(resId, false /* force */);
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}
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}
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