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/*
* Copyright (C) 2015 The CyanogenMod 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.launcher3;
import android.content.BroadcastReceiver;
import android.content.Context;
import android.content.Intent;
import java.io.File;
import java.util.ArrayList;
public class ThemeChangedReceiver extends BroadcastReceiver {
private static final String EXTRA_COMPONENTS = "components";
public static final String MODIFIES_ICONS = "mods_icons";
public static final String MODIFIES_FONTS = "mods_fonts";
public static final String MODIFIES_OVERLAYS = "mods_overlays";
public void onReceive(Context context, Intent intent) {
// components is a string array of the components that changed
ArrayList<String> components = intent.getStringArrayListExtra(EXTRA_COMPONENTS);
if (isInterestingThemeChange(components)) {
LauncherAppState app = LauncherAppState.getInstance();
app.getIconCache().flush();
clearWidgetPreviewCache(context);
app.recreateWidgetPreviewDb();
app.getModel().forceReload();
}
}
/**
* We consider this an "interesting" theme change if it modifies icons, overlays, or fonts.
* @param components
* @return
*/
private boolean isInterestingThemeChange(ArrayList<String> components) {
if (components != null) {
for (String component : components) {
if (component.equals(MODIFIES_ICONS) ||
component.equals(MODIFIES_FONTS) ||
component.equals(MODIFIES_OVERLAYS)) {
return true;
}
}
}
return false;
}
/**
* Normally we could use context.deleteDatabase() but this db is in cache/ so we'll
* manually delete it and the journal ourselves.
*
* @param context
*/
private void clearWidgetPreviewCache(Context context) {
File[] files = context.getCacheDir().listFiles();
if (files != null) {
for (File f : files) {
if (!f.isDirectory() && f.getName().startsWith(LauncherFiles.LAUNCHER_DB)) f.delete();
}
}
}
}
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