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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.launcher3.icons;
import static com.android.launcher3.icons.CachingLogic.COMPONENT_WITH_LABEL;
import static com.android.launcher3.icons.CachingLogic.LAUNCHER_ACTIVITY_INFO;
import android.content.Context;
import android.content.Intent;
import android.content.pm.LauncherActivityInfo;
import android.content.pm.PackageInfo;
import android.content.pm.PackageManager;
import android.content.pm.PackageManager.NameNotFoundException;
import android.os.Handler;
import android.os.Process;
import android.os.UserHandle;
import android.util.Log;
import com.android.launcher3.AppInfo;
import com.android.launcher3.InvariantDeviceProfile;
import com.android.launcher3.ItemInfoWithIcon;
import com.android.launcher3.LauncherModel;
import com.android.launcher3.ShortcutInfo;
import com.android.launcher3.Utilities;
import com.android.launcher3.model.PackageItemInfo;
import com.android.launcher3.util.Preconditions;
import com.android.launcher3.util.Provider;
import androidx.annotation.NonNull;
/**
* Cache of application icons. Icons can be made from any thread.
*/
public class IconCache extends BaseIconCache {
private static final String TAG = "Launcher.IconCache";
private int mPendingIconRequestCount = 0;
public IconCache(Context context, InvariantDeviceProfile inv) {
super(context, inv.fillResIconDpi, inv.iconBitmapSize);
}
/**
* Updates the entries related to the given package in memory and persistent DB.
*/
public synchronized void updateIconsForPkg(String packageName, UserHandle user) {
removeIconsForPkg(packageName, user);
try {
PackageInfo info = mPackageManager.getPackageInfo(packageName,
PackageManager.GET_UNINSTALLED_PACKAGES);
long userSerial = mUserManager.getSerialNumberForUser(user);
for (LauncherActivityInfo app : mLauncherApps.getActivityList(packageName, user)) {
addIconToDBAndMemCache(app, LAUNCHER_ACTIVITY_INFO, info, userSerial,
false /*replace existing*/);
}
} catch (NameNotFoundException e) {
Log.d(TAG, "Package not found", e);
}
}
/**
* Fetches high-res icon for the provided ItemInfo and updates the caller when done.
* @return a request ID that can be used to cancel the request.
*/
public IconLoadRequest updateIconInBackground(final ItemInfoUpdateReceiver caller,
final ItemInfoWithIcon info) {
Preconditions.assertUIThread();
if (mPendingIconRequestCount <= 0) {
LauncherModel.setWorkerPriority(Process.THREAD_PRIORITY_FOREGROUND);
}
mPendingIconRequestCount ++;
IconLoadRequest request = new IconLoadRequest(mWorkerHandler, this::onIconRequestEnd) {
@Override
public void run() {
if (info instanceof AppInfo || info instanceof ShortcutInfo) {
getTitleAndIcon(info, false);
} else if (info instanceof PackageItemInfo) {
getTitleAndIconForApp((PackageItemInfo) info, false);
}
mMainThreadExecutor.execute(() -> {
caller.reapplyItemInfo(info);
onEnd();
});
}
};
Utilities.postAsyncCallback(mWorkerHandler, request);
return request;
}
private void onIconRequestEnd() {
mPendingIconRequestCount --;
if (mPendingIconRequestCount <= 0) {
LauncherModel.setWorkerPriority(Process.THREAD_PRIORITY_BACKGROUND);
}
}
/**
* Updates {@param application} only if a valid entry is found.
*/
public synchronized void updateTitleAndIcon(AppInfo application) {
CacheEntry entry = cacheLocked(application.componentName,
application.user, Provider.of(null), LAUNCHER_ACTIVITY_INFO,
false, application.usingLowResIcon());
if (entry.icon != null && !isDefaultIcon(entry.icon, application.user)) {
applyCacheEntry(entry, application);
}
}
/**
* Fill in {@param info} with the icon and label for {@param activityInfo}
*/
public synchronized void getTitleAndIcon(ItemInfoWithIcon info,
LauncherActivityInfo activityInfo, boolean useLowResIcon) {
// If we already have activity info, no need to use package icon
getTitleAndIcon(info, Provider.of(activityInfo), false, useLowResIcon);
}
/**
* Fill in {@param info} with the icon and label. If the
* corresponding activity is not found, it reverts to the package icon.
*/
public synchronized void getTitleAndIcon(ItemInfoWithIcon info, boolean useLowResIcon) {
// null info means not installed, but if we have a component from the intent then
// we should still look in the cache for restored app icons.
if (info.getTargetComponent() == null) {
info.applyFrom(getDefaultIcon(info.user));
info.title = "";
info.contentDescription = "";
} else {
Intent intent = info.getIntent();
getTitleAndIcon(info, () -> mLauncherApps.resolveActivity(intent, info.user),
true, useLowResIcon);
}
}
public synchronized String getTitleNoCache(ComponentWithLabel info) {
CacheEntry entry = cacheLocked(info.getComponent(), info.getUser(), Provider.of(info),
COMPONENT_WITH_LABEL, false /* usePackageIcon */, true /* useLowResIcon */,
false /* addToMemCache */);
return Utilities.trim(entry.title);
}
/**
* Fill in {@param shortcutInfo} with the icon and label for {@param info}
*/
private synchronized void getTitleAndIcon(
@NonNull ItemInfoWithIcon infoInOut,
@NonNull Provider<LauncherActivityInfo> activityInfoProvider,
boolean usePkgIcon, boolean useLowResIcon) {
CacheEntry entry = cacheLocked(infoInOut.getTargetComponent(), infoInOut.user,
activityInfoProvider,
LAUNCHER_ACTIVITY_INFO, usePkgIcon, useLowResIcon);
applyCacheEntry(entry, infoInOut);
}
public static abstract class IconLoadRequest implements Runnable {
private final Handler mHandler;
private final Runnable mEndRunnable;
private boolean mEnded = false;
IconLoadRequest(Handler handler, Runnable endRunnable) {
mHandler = handler;
mEndRunnable = endRunnable;
}
public void cancel() {
mHandler.removeCallbacks(this);
onEnd();
}
public void onEnd() {
if (!mEnded) {
mEnded = true;
mEndRunnable.run();
}
}
}
/**
* Interface for receiving itemInfo with high-res icon.
*/
public interface ItemInfoUpdateReceiver {
void reapplyItemInfo(ItemInfoWithIcon info);
}
}
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