chromium/java/com/android/webview/chromium/ResourceRewriter.java

/*
 * Copyright (C) 2014 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.webview.chromium;

import android.content.Context;
import android.util.SparseArray;

import java.lang.reflect.Field;
import java.lang.reflect.Modifier;

/**
 * Helper class used to fix up resource ids.
 * This is mostly a copy of the code in frameworks/base/core/java/android/app/LoadedApk.java.
 * TODO: Remove if a cleaner mechanism is provided (either public API or AAPT is changed to generate
 * this code).
 */
class ResourceRewriter {

    public static void rewriteRValues(Context ctx) {
        // Rewrite the R 'constants' for all library apks.
        SparseArray<String> packageIdentifiers = ctx.getResources().getAssets()
                .getAssignedPackageIdentifiers();

        final int N = packageIdentifiers.size();
        for (int i = 0; i < N; i++) {
            final int id = packageIdentifiers.keyAt(i);
            if (id == 0x01 || id == 0x7f) {
                continue;
            }

            // TODO: We should use jarjar to remove the redundant R classes here, but due
            // to a bug in jarjar it's not possible to rename classes with '$' in their name.
            // See b/15684775.
            com.android.webview.chromium.R.onResourcesLoaded(id);
            org.chromium.ui.R.onResourcesLoaded(id);
            org.chromium.content.R.onResourcesLoaded(id);

            break;
        }
    }
}