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/**
* Copyright (C) 2019 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.appprediction;
import static android.content.pm.PackageManager.MATCH_INSTANT;
import static com.android.launcher3.util.Executors.MODEL_EXECUTOR;
import android.content.Context;
import android.content.Intent;
import android.content.pm.ApplicationInfo;
import android.content.pm.PackageManager;
import android.content.pm.ResolveInfo;
import android.content.pm.ShortcutInfo;
import android.net.Uri;
import android.os.Handler;
import android.os.Looper;
import android.os.Message;
import android.util.ArrayMap;
import android.util.Log;
import androidx.annotation.MainThread;
import androidx.annotation.Nullable;
import androidx.annotation.UiThread;
import androidx.annotation.WorkerThread;
import com.android.launcher3.LauncherAppState;
import com.android.launcher3.WorkspaceItemInfo;
import com.android.launcher3.icons.IconCache;
import com.android.launcher3.icons.LauncherIcons;
import com.android.launcher3.shortcuts.DeepShortcutManager;
import com.android.launcher3.shortcuts.ShortcutKey;
import com.android.launcher3.util.InstantAppResolver;
import java.util.ArrayList;
import java.util.Collections;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
/**
* Utility class which loads and caches predicted items like instant apps and shortcuts, before
* they can be displayed on the UI
*/
public class DynamicItemCache {
private static final String TAG = "DynamicItemCache";
private static final boolean DEBUG = false;
private static final String DEFAULT_URL = "default-url";
private static final int BG_MSG_LOAD_SHORTCUTS = 1;
private static final int BG_MSG_LOAD_INSTANT_APPS = 2;
private static final int UI_MSG_UPDATE_SHORTCUTS = 1;
private static final int UI_MSG_UPDATE_INSTANT_APPS = 2;
private final Context mContext;
private final Handler mWorker;
private final Handler mUiHandler;
private final InstantAppResolver mInstantAppResolver;
private final Runnable mOnUpdateCallback;
private final Map<ShortcutKey, WorkspaceItemInfo> mShortcuts;
private final Map<String, InstantAppItemInfo> mInstantApps;
public DynamicItemCache(Context context, Runnable onUpdateCallback) {
mContext = context;
mWorker = new Handler(MODEL_EXECUTOR.getLooper(), this::handleWorkerMessage);
mUiHandler = new Handler(Looper.getMainLooper(), this::handleUiMessage);
mInstantAppResolver = InstantAppResolver.newInstance(context);
mOnUpdateCallback = onUpdateCallback;
mShortcuts = new HashMap<>();
mInstantApps = new HashMap<>();
}
public void cacheItems(List<ShortcutKey> shortcutKeys, List<String> pkgNames) {
if (!shortcutKeys.isEmpty()) {
mWorker.removeMessages(BG_MSG_LOAD_SHORTCUTS);
Message.obtain(mWorker, BG_MSG_LOAD_SHORTCUTS, shortcutKeys).sendToTarget();
}
if (!pkgNames.isEmpty()) {
mWorker.removeMessages(BG_MSG_LOAD_INSTANT_APPS);
Message.obtain(mWorker, BG_MSG_LOAD_INSTANT_APPS, pkgNames).sendToTarget();
}
}
private boolean handleWorkerMessage(Message msg) {
switch (msg.what) {
case BG_MSG_LOAD_SHORTCUTS: {
List<ShortcutKey> shortcutKeys = msg.obj != null ?
(List<ShortcutKey>) msg.obj : Collections.EMPTY_LIST;
Map<ShortcutKey, WorkspaceItemInfo> shortcutKeyAndInfos = new ArrayMap<>();
for (ShortcutKey shortcutKey : shortcutKeys) {
WorkspaceItemInfo workspaceItemInfo = loadShortcutWorker(shortcutKey);
if (workspaceItemInfo != null) {
shortcutKeyAndInfos.put(shortcutKey, workspaceItemInfo);
}
}
Message.obtain(mUiHandler, UI_MSG_UPDATE_SHORTCUTS, shortcutKeyAndInfos)
.sendToTarget();
return true;
}
case BG_MSG_LOAD_INSTANT_APPS: {
List<String> pkgNames = msg.obj != null ?
(List<String>) msg.obj : Collections.EMPTY_LIST;
List<InstantAppItemInfo> instantAppItemInfos = new ArrayList<>();
for (String pkgName : pkgNames) {
InstantAppItemInfo instantAppItemInfo = loadInstantApp(pkgName);
if (instantAppItemInfo != null) {
instantAppItemInfos.add(instantAppItemInfo);
}
}
Message.obtain(mUiHandler, UI_MSG_UPDATE_INSTANT_APPS, instantAppItemInfos)
.sendToTarget();
return true;
}
}
return false;
}
private boolean handleUiMessage(Message msg) {
switch (msg.what) {
case UI_MSG_UPDATE_SHORTCUTS: {
mShortcuts.clear();
mShortcuts.putAll((Map<ShortcutKey, WorkspaceItemInfo>) msg.obj);
mOnUpdateCallback.run();
return true;
}
case UI_MSG_UPDATE_INSTANT_APPS: {
List<InstantAppItemInfo> instantAppItemInfos = (List<InstantAppItemInfo>) msg.obj;
mInstantApps.clear();
for (InstantAppItemInfo instantAppItemInfo : instantAppItemInfos) {
mInstantApps.put(instantAppItemInfo.getTargetComponent().getPackageName(),
instantAppItemInfo);
}
mOnUpdateCallback.run();
if (DEBUG) {
Log.d(TAG, String.format("Cache size: %d, Cache: %s",
mInstantApps.size(), mInstantApps.toString()));
}
return true;
}
}
return false;
}
@WorkerThread
private WorkspaceItemInfo loadShortcutWorker(ShortcutKey shortcutKey) {
DeepShortcutManager mgr = DeepShortcutManager.getInstance(mContext);
List<ShortcutInfo> details = mgr.queryForFullDetails(
shortcutKey.componentName.getPackageName(),
Collections.<String>singletonList(shortcutKey.getId()),
shortcutKey.user);
if (!details.isEmpty()) {
WorkspaceItemInfo si = new WorkspaceItemInfo(details.get(0), mContext);
try (LauncherIcons li = LauncherIcons.obtain(mContext)) {
si.applyFrom(li.createShortcutIcon(details.get(0), true /* badged */, null));
} catch (Exception e) {
if (DEBUG) {
Log.e(TAG, "Error loading shortcut icon for " + shortcutKey.toString());
}
return null;
}
return si;
}
if (DEBUG) {
Log.d(TAG, "No shortcut found: " + shortcutKey.toString());
}
return null;
}
private InstantAppItemInfo loadInstantApp(String pkgName) {
PackageManager pm = mContext.getPackageManager();
try {
ApplicationInfo ai = pm.getApplicationInfo(pkgName, 0);
if (!mInstantAppResolver.isInstantApp(ai)) {
return null;
}
} catch (PackageManager.NameNotFoundException e) {
return null;
}
String url = retrieveDefaultUrl(pkgName, pm);
if (url == null) {
Log.w(TAG, "no default-url available for pkg " + pkgName);
return null;
}
Intent intent = new Intent(Intent.ACTION_VIEW)
.addCategory(Intent.CATEGORY_BROWSABLE)
.setData(Uri.parse(url));
InstantAppItemInfo info = new InstantAppItemInfo(intent, pkgName);
IconCache iconCache = LauncherAppState.getInstance(mContext).getIconCache();
iconCache.getTitleAndIcon(info, false);
if (info.iconBitmap == null || iconCache.isDefaultIcon(info.iconBitmap, info.user)) {
return null;
}
return info;
}
@Nullable
public static String retrieveDefaultUrl(String pkgName, PackageManager pm) {
Intent mainIntent = new Intent().setAction(Intent.ACTION_MAIN)
.addCategory(Intent.CATEGORY_LAUNCHER).setPackage(pkgName);
List<ResolveInfo> resolveInfos = pm.queryIntentActivities(
mainIntent, MATCH_INSTANT | PackageManager.GET_META_DATA);
String url = null;
for (ResolveInfo resolveInfo : resolveInfos) {
if (resolveInfo.activityInfo.metaData != null
&& resolveInfo.activityInfo.metaData.containsKey(DEFAULT_URL)) {
url = resolveInfo.activityInfo.metaData.getString(DEFAULT_URL);
}
}
return url;
}
@UiThread
public InstantAppItemInfo getInstantApp(String pkgName) {
return mInstantApps.get(pkgName);
}
@MainThread
public WorkspaceItemInfo getShortcutInfo(ShortcutKey key) {
return mShortcuts.get(key);
}
}
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