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/*
* 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.launcher3.compat;
import android.content.Context;
import android.content.SharedPreferences;
import android.text.TextUtils;
import android.util.Log;
import com.android.launcher3.LauncherAppState;
import org.json.JSONException;
import org.json.JSONObject;
import org.json.JSONStringer;
import org.json.JSONTokener;
import java.util.ArrayList;
import java.util.HashSet;
public class PackageInstallerCompatV16 extends PackageInstallerCompat {
private static final String TAG = "PackageInstallerCompatV16";
private static final boolean DEBUG = false;
private static final String KEY_PROGRESS = "progress";
private static final String KEY_STATE = "state";
private static final String PREFS =
"com.android.launcher3.compat.PackageInstallerCompatV16.queue";
protected final SharedPreferences mPrefs;
boolean mUseQueue;
boolean mFinishedBind;
boolean mReplayPending;
PackageInstallerCompatV16(Context context) {
mPrefs = context.getSharedPreferences(PREFS, Context.MODE_PRIVATE);
}
@Override
public void onPause() {
mUseQueue = true;
if (DEBUG) Log.d(TAG, "updates paused");
}
@Override
public void onResume() {
mUseQueue = false;
if (mFinishedBind) {
replayUpdates();
}
}
@Override
public void onFinishBind() {
mFinishedBind = true;
if (!mUseQueue) {
replayUpdates();
}
}
@Override
public void onStop() { }
private void replayUpdates() {
if (DEBUG) Log.d(TAG, "updates resumed");
LauncherAppState app = LauncherAppState.getInstanceNoCreate();
if (app == null) {
mReplayPending = true; // try again later
if (DEBUG) Log.d(TAG, "app is null, delaying send");
return;
}
mReplayPending = false;
ArrayList<PackageInstallInfo> updates = new ArrayList<PackageInstallInfo>();
for (String packageName: mPrefs.getAll().keySet()) {
final String json = mPrefs.getString(packageName, null);
if (!TextUtils.isEmpty(json)) {
updates.add(infoFromJson(packageName, json));
}
}
if (!updates.isEmpty()) {
sendUpdate(app, updates);
}
}
/**
* This should be called by the implementations to register a package update.
*/
@Override
public synchronized void recordPackageUpdate(String packageName, int state, int progress) {
SharedPreferences.Editor editor = mPrefs.edit();
PackageInstallInfo installInfo = new PackageInstallInfo(packageName);
installInfo.progress = progress;
installInfo.state = state;
if (state == STATUS_INSTALLED) {
// no longer necessary to track this package
editor.remove(packageName);
if (DEBUG) Log.d(TAG, "no longer tracking " + packageName);
} else {
editor.putString(packageName, infoToJson(installInfo));
if (DEBUG)
Log.d(TAG, "saved state: " + infoToJson(installInfo)
+ " for package: " + packageName);
}
editor.commit();
if (!mUseQueue) {
if (mReplayPending) {
replayUpdates();
} else if (state != STATUS_INSTALLED) {
LauncherAppState app = LauncherAppState.getInstanceNoCreate();
ArrayList<PackageInstallInfo> update = new ArrayList<PackageInstallInfo>();
update.add(installInfo);
sendUpdate(app, update);
}
}
}
private void sendUpdate(LauncherAppState app, ArrayList<PackageInstallInfo> updates) {
if (app == null) {
mReplayPending = true; // try again later
if (DEBUG) Log.d(TAG, "app is null, delaying send");
} else {
app.setPackageState(updates);
}
}
private static PackageInstallInfo infoFromJson(String packageName, String json) {
PackageInstallInfo info = new PackageInstallInfo(packageName);
try {
JSONObject object = (JSONObject) new JSONTokener(json).nextValue();
info.state = object.getInt(KEY_STATE);
info.progress = object.getInt(KEY_PROGRESS);
} catch (JSONException e) {
Log.e(TAG, "failed to deserialize app state update", e);
}
return info;
}
private static String infoToJson(PackageInstallInfo info) {
String value = null;
try {
JSONStringer json = new JSONStringer()
.object()
.key(KEY_STATE).value(info.state)
.key(KEY_PROGRESS).value(info.progress)
.endObject();
value = json.toString();
} catch (JSONException e) {
Log.e(TAG, "failed to serialize app state update", e);
}
return value;
}
@Override
public HashSet<String> updateAndGetActiveSessionCache() {
return new HashSet<String>();
}
}
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