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/*
* Copyright (C) 2008 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.launcher2;
import android.content.ComponentName;
import android.content.ContentResolver;
import android.content.ContentValues;
import android.content.Intent;
import android.content.Context;
import android.content.pm.ActivityInfo;
import android.content.pm.PackageManager;
import android.content.pm.ResolveInfo;
import android.content.res.Resources;
import android.database.Cursor;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.graphics.drawable.Drawable;
import android.graphics.drawable.BitmapDrawable;
import android.net.Uri;
import android.util.Log;
import android.os.Process;
import java.lang.ref.WeakReference;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
/**
* Cache of application icons. Icons can be made from any thread.
*/
public class AppInfoCache {
private static final String TAG = "Launcher.AppInfoCache";
private static final int INITIAL_ICON_CACHE_CAPACITY = 50;
private static final HashMap<ComponentName, ApplicationInfo> sCache =
new HashMap<ComponentName, ApplicationInfo>(INITIAL_ICON_CACHE_CAPACITY);
/**
* no public constructor.
*/
private AppInfoCache() {
}
/**
* For the given ResolveInfo, return an ApplicationInfo and cache the result for later.
*/
public static ApplicationInfo cache(ResolveInfo info, Context context,
Utilities.BubbleText bubble) {
synchronized (sCache) {
ComponentName componentName = new ComponentName(
info.activityInfo.applicationInfo.packageName,
info.activityInfo.name);
ApplicationInfo application = sCache.get(componentName);
if (application == null) {
application = new ApplicationInfo();
application.container = ItemInfo.NO_ID;
updateTitleAndIcon(info, application, context, bubble);
application.setActivity(componentName,
Intent.FLAG_ACTIVITY_NEW_TASK | Intent.FLAG_ACTIVITY_RESET_TASK_IF_NEEDED);
sCache.put(componentName, application);
}
return application;
}
}
/**
* Update the entry in the in the cache with its new metadata.
*/
public static void update(ResolveInfo info, ApplicationInfo applicationInfo, Context context,
Utilities.BubbleText bubble) {
synchronized (sCache) {
updateTitleAndIcon(info, applicationInfo, context, bubble);
ComponentName componentName = new ComponentName(
info.activityInfo.applicationInfo.packageName, info.activityInfo.name);
sCache.put(componentName, applicationInfo);
}
}
/**
* Remove any records for the supplied ComponentName.
*/
public static void remove(ComponentName componentName) {
synchronized (sCache) {
sCache.remove(componentName);
}
}
/**
* Empty out the cache.
*/
public static void flush() {
synchronized (sCache) {
sCache.clear();
}
}
/**
* Get the icon for the supplied ApplicationInfo. If that activity already
* exists in the cache, use that.
*/
public static Drawable getIconDrawable(PackageManager packageManager, ApplicationInfo info) {
final ResolveInfo resolveInfo = packageManager.resolveActivity(info.intent, 0);
if (resolveInfo == null) {
return null;
}
ComponentName componentName = new ComponentName(
resolveInfo.activityInfo.applicationInfo.packageName,
resolveInfo.activityInfo.name);
ApplicationInfo cached;
synchronized (sCache) {
cached = sCache.get(componentName);
if (cached != null) {
if (cached.icon == null) {
cached.icon = resolveInfo.activityInfo.loadIcon(packageManager);
}
return cached.icon;
} else {
return resolveInfo.activityInfo.loadIcon(packageManager);
}
}
}
/**
* Go through the cache and disconnect any of the callbacks in the drawables or we
* leak the previous Home screen on orientation change.
*/
public static void unbindDrawables() {
synchronized (sCache) {
for (ApplicationInfo appInfo: sCache.values()) {
if (appInfo.icon != null) {
appInfo.icon.setCallback(null);
}
}
}
}
/**
* Update the title and icon. Don't keep a reference to the context!
*/
private static void updateTitleAndIcon(ResolveInfo info, ApplicationInfo application,
Context context, Utilities.BubbleText bubble) {
final PackageManager packageManager = context.getPackageManager();
application.title = info.loadLabel(packageManager);
if (application.title == null) {
application.title = info.activityInfo.name;
}
application.iconBitmap = Utilities.createAllAppsBitmap(
info.activityInfo.loadIcon(packageManager), context);
application.titleBitmap = bubble.createTextBitmap(application.title.toString());
}
}
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