7bfbbcb04b
1. Before the print job activity was started asyncronously with respect to the print call on to the print manager. This was creating a situation where the starting activity may finish before the print dialog appears which may lead to an orphaned print document adapter with no data to print (as the UI is is gone), or strange behaviors where the print dialog starts on as a separate task. To address this the pending intent for starting the print dialog is not started by the print spooler since we cannot call into it synchronously as we have to start its process and bind to the spooler service which leads to jankyness in the client app. Now the pending intent is created by the print manager service in the synchronous print call so from an app's perspective calling print starts the activity. The side effect of this design is that the print dialog activity may start before the system is bound to the spooler service. In such a case the print activity cannot start poking the print spooler state as the system registers callback to observe the spooler state. To address this the print spooler activity disables the UI and also binds to the spooler service which happenes immediately after it is started. As soon as the print dialog binds to the service it starts the UI. 2. Fixed an bug in the printer adapter of the print dialog that was leading to a crash if the only item in the adater is the all pritners option and it is selected. 3. Piping the package name that started the printing so we can pass it to the storage UI as a hint to open the last location the app used. bug:11127269 Change-Id: Ia93820bdae0b0e7600a0930b1f10d9708bd86b68
635 lines
22 KiB
Java
635 lines
22 KiB
Java
/*
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* Copyright (C) 2013 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package com.android.server.print;
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import android.content.ComponentName;
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import android.content.Context;
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import android.content.Intent;
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import android.content.ServiceConnection;
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import android.os.Binder;
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import android.os.IBinder;
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import android.os.ParcelFileDescriptor;
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import android.os.RemoteException;
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import android.os.SystemClock;
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import android.os.UserHandle;
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import android.print.IPrintSpooler;
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import android.print.IPrintSpoolerCallbacks;
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import android.print.IPrintSpoolerClient;
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import android.print.PrintJobId;
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import android.print.PrintJobInfo;
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import android.util.Slog;
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import android.util.TimedRemoteCaller;
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import java.io.FileDescriptor;
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import java.io.PrintWriter;
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import java.lang.ref.WeakReference;
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import java.util.List;
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import java.util.concurrent.TimeoutException;
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import libcore.io.IoUtils;
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/**
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* This represents the remote print spooler as a local object to the
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* PrintManagerSerivce. It is responsible to connecting to the remote
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* spooler if needed, to make the timed remote calls, to handle
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* remote exceptions, and to bind/unbind to the remote instance as
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* needed.
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*/
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final class RemotePrintSpooler {
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private static final String LOG_TAG = "RemotePrintSpooler";
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private static final boolean DEBUG = false;
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private static final long BIND_SPOOLER_SERVICE_TIMEOUT = 10000;
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private final Object mLock = new Object();
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private final GetPrintJobInfosCaller mGetPrintJobInfosCaller = new GetPrintJobInfosCaller();
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private final GetPrintJobInfoCaller mGetPrintJobInfoCaller = new GetPrintJobInfoCaller();
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private final SetPrintJobStateCaller mSetPrintJobStatusCaller = new SetPrintJobStateCaller();
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private final SetPrintJobTagCaller mSetPrintJobTagCaller = new SetPrintJobTagCaller();
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private final ServiceConnection mServiceConnection = new MyServiceConnection();
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private final Context mContext;
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private final UserHandle mUserHandle;
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private final PrintSpoolerClient mClient;
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private final Intent mIntent;
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private final PrintSpoolerCallbacks mCallbacks;
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private IPrintSpooler mRemoteInstance;
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private boolean mDestroyed;
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private boolean mCanUnbind;
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public static interface PrintSpoolerCallbacks {
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public void onPrintJobQueued(PrintJobInfo printJob);
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public void onAllPrintJobsForServiceHandled(ComponentName printService);
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public void onPrintJobStateChanged(PrintJobInfo printJob);
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}
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public RemotePrintSpooler(Context context, int userId,
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PrintSpoolerCallbacks callbacks) {
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mContext = context;
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mUserHandle = new UserHandle(userId);
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mCallbacks = callbacks;
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mClient = new PrintSpoolerClient(this);
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mIntent = new Intent();
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mIntent.setComponent(new ComponentName("com.android.printspooler",
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"com.android.printspooler.PrintSpoolerService"));
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}
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public final List<PrintJobInfo> getPrintJobInfos(ComponentName componentName, int state,
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int appId) {
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throwIfCalledOnMainThread();
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synchronized (mLock) {
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throwIfDestroyedLocked();
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mCanUnbind = false;
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}
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try {
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return mGetPrintJobInfosCaller.getPrintJobInfos(getRemoteInstanceLazy(),
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componentName, state, appId);
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} catch (RemoteException re) {
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Slog.e(LOG_TAG, "Error getting print jobs.", re);
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} catch (TimeoutException te) {
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Slog.e(LOG_TAG, "Error getting print jobs.", te);
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} finally {
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if (DEBUG) {
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Slog.i(LOG_TAG, "[user: " + mUserHandle.getIdentifier() + "] getPrintJobInfos()");
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}
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synchronized (mLock) {
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mCanUnbind = true;
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mLock.notifyAll();
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}
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}
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return null;
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}
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public final void createPrintJob(PrintJobInfo printJob) {
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throwIfCalledOnMainThread();
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synchronized (mLock) {
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throwIfDestroyedLocked();
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mCanUnbind = false;
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}
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try {
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getRemoteInstanceLazy().createPrintJob(printJob);
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} catch (RemoteException re) {
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Slog.e(LOG_TAG, "Error creating print job.", re);
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} catch (TimeoutException te) {
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Slog.e(LOG_TAG, "Error creating print job.", te);
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} finally {
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if (DEBUG) {
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Slog.i(LOG_TAG, "[user: " + mUserHandle.getIdentifier() + "] createPrintJob()");
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}
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synchronized (mLock) {
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mCanUnbind = true;
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mLock.notifyAll();
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}
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}
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}
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public final void writePrintJobData(ParcelFileDescriptor fd, PrintJobId printJobId) {
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throwIfCalledOnMainThread();
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synchronized (mLock) {
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throwIfDestroyedLocked();
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mCanUnbind = false;
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}
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try {
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getRemoteInstanceLazy().writePrintJobData(fd, printJobId);
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} catch (RemoteException re) {
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Slog.e(LOG_TAG, "Error writing print job data.", re);
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} catch (TimeoutException te) {
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Slog.e(LOG_TAG, "Error writing print job data.", te);
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} finally {
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if (DEBUG) {
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Slog.i(LOG_TAG, "[user: " + mUserHandle.getIdentifier() + "] writePrintJobData()");
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}
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// We passed the file descriptor across and now the other
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// side is responsible to close it, so close the local copy.
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IoUtils.closeQuietly(fd);
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synchronized (mLock) {
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mCanUnbind = true;
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mLock.notifyAll();
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}
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}
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}
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public final PrintJobInfo getPrintJobInfo(PrintJobId printJobId, int appId) {
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throwIfCalledOnMainThread();
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synchronized (mLock) {
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throwIfDestroyedLocked();
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mCanUnbind = false;
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}
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try {
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return mGetPrintJobInfoCaller.getPrintJobInfo(getRemoteInstanceLazy(),
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printJobId, appId);
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} catch (RemoteException re) {
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Slog.e(LOG_TAG, "Error getting print job info.", re);
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} catch (TimeoutException te) {
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Slog.e(LOG_TAG, "Error getting print job info.", te);
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} finally {
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if (DEBUG) {
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Slog.i(LOG_TAG, "[user: " + mUserHandle.getIdentifier() + "] getPrintJobInfo()");
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}
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synchronized (mLock) {
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mCanUnbind = true;
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mLock.notifyAll();
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}
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}
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return null;
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}
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public final boolean setPrintJobState(PrintJobId printJobId, int state, String error) {
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throwIfCalledOnMainThread();
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synchronized (mLock) {
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throwIfDestroyedLocked();
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mCanUnbind = false;
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}
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try {
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return mSetPrintJobStatusCaller.setPrintJobState(getRemoteInstanceLazy(),
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printJobId, state, error);
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} catch (RemoteException re) {
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Slog.e(LOG_TAG, "Error setting print job state.", re);
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} catch (TimeoutException te) {
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Slog.e(LOG_TAG, "Error setting print job state.", te);
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} finally {
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if (DEBUG) {
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Slog.i(LOG_TAG, "[user: " + mUserHandle.getIdentifier() + "] setPrintJobState()");
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}
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synchronized (mLock) {
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mCanUnbind = true;
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mLock.notifyAll();
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}
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}
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return false;
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}
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public final boolean setPrintJobTag(PrintJobId printJobId, String tag) {
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throwIfCalledOnMainThread();
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synchronized (mLock) {
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throwIfDestroyedLocked();
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mCanUnbind = false;
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}
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try {
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return mSetPrintJobTagCaller.setPrintJobTag(getRemoteInstanceLazy(),
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printJobId, tag);
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} catch (RemoteException re) {
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Slog.e(LOG_TAG, "Error setting print job tag.", re);
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} catch (TimeoutException te) {
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Slog.e(LOG_TAG, "Error setting print job tag.", te);
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} finally {
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if (DEBUG) {
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Slog.i(LOG_TAG, "[user: " + mUserHandle.getIdentifier() + "] setPrintJobTag()");
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}
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synchronized (mLock) {
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mCanUnbind = true;
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mLock.notifyAll();
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}
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}
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return false;
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}
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public final void setPrintJobCancelling(PrintJobId printJobId, boolean cancelling) {
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throwIfCalledOnMainThread();
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synchronized (mLock) {
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throwIfDestroyedLocked();
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mCanUnbind = false;
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}
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try {
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getRemoteInstanceLazy().setPrintJobCancelling(printJobId,
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cancelling);
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} catch (RemoteException re) {
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Slog.e(LOG_TAG, "Error setting print job cancelling.", re);
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} catch (TimeoutException te) {
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Slog.e(LOG_TAG, "Error setting print job cancelling.", te);
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} finally {
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if (DEBUG) {
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Slog.i(LOG_TAG, "[user: " + mUserHandle.getIdentifier()
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+ "] setPrintJobCancelling()");
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}
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synchronized (mLock) {
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mCanUnbind = true;
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mLock.notifyAll();
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}
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}
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}
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public final void removeObsoletePrintJobs() {
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throwIfCalledOnMainThread();
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synchronized (mLock) {
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throwIfDestroyedLocked();
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mCanUnbind = false;
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}
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try {
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getRemoteInstanceLazy().removeObsoletePrintJobs();
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} catch (RemoteException re) {
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Slog.e(LOG_TAG, "Error removing obsolete print jobs .", re);
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} catch (TimeoutException te) {
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Slog.e(LOG_TAG, "Error removing obsolete print jobs .", te);
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} finally {
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if (DEBUG) {
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Slog.i(LOG_TAG, "[user: " + mUserHandle.getIdentifier()
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+ "] removeObsoletePrintJobs()");
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}
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synchronized (mLock) {
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mCanUnbind = true;
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mLock.notifyAll();
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}
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}
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}
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public final void destroy() {
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throwIfCalledOnMainThread();
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if (DEBUG) {
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Slog.i(LOG_TAG, "[user: " + mUserHandle.getIdentifier() + "] destroy()");
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}
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synchronized (mLock) {
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throwIfDestroyedLocked();
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unbindLocked();
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mDestroyed = true;
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mCanUnbind = false;
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}
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}
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public void dump(FileDescriptor fd, PrintWriter pw, String prefix) {
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synchronized (mLock) {
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pw.append(prefix).append("destroyed=")
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.append(String.valueOf(mDestroyed)).println();
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pw.append(prefix).append("bound=")
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.append((mRemoteInstance != null) ? "true" : "false").println();
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pw.flush();
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try {
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getRemoteInstanceLazy().asBinder().dump(fd, new String[]{prefix});
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} catch (TimeoutException te) {
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/* ignore */
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} catch (RemoteException re) {
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/* ignore */
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}
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}
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}
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private void onAllPrintJobsHandled() {
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synchronized (mLock) {
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throwIfDestroyedLocked();
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unbindLocked();
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}
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}
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private void onPrintJobStateChanged(PrintJobInfo printJob) {
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mCallbacks.onPrintJobStateChanged(printJob);
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}
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private IPrintSpooler getRemoteInstanceLazy() throws TimeoutException {
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synchronized (mLock) {
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if (mRemoteInstance != null) {
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return mRemoteInstance;
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}
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bindLocked();
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return mRemoteInstance;
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}
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}
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private void bindLocked() throws TimeoutException {
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if (mRemoteInstance != null) {
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return;
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}
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if (DEBUG) {
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Slog.i(LOG_TAG, "[user: " + mUserHandle.getIdentifier() + "] bindLocked()");
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}
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mContext.bindServiceAsUser(mIntent, mServiceConnection,
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Context.BIND_AUTO_CREATE, mUserHandle);
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final long startMillis = SystemClock.uptimeMillis();
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while (true) {
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if (mRemoteInstance != null) {
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break;
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}
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final long elapsedMillis = SystemClock.uptimeMillis() - startMillis;
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final long remainingMillis = BIND_SPOOLER_SERVICE_TIMEOUT - elapsedMillis;
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if (remainingMillis <= 0) {
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throw new TimeoutException("Cannot get spooler!");
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}
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try {
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mLock.wait(remainingMillis);
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} catch (InterruptedException ie) {
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/* ignore */
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}
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}
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mCanUnbind = true;
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mLock.notifyAll();
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}
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private void unbindLocked() {
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if (mRemoteInstance == null) {
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return;
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}
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while (true) {
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if (mCanUnbind) {
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if (DEBUG) {
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Slog.i(LOG_TAG, "[user: " + mUserHandle.getIdentifier() + "] unbindLocked()");
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}
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clearClientLocked();
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mRemoteInstance = null;
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mContext.unbindService(mServiceConnection);
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return;
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}
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try {
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mLock.wait();
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} catch (InterruptedException ie) {
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/* ignore */
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}
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}
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}
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private void setClientLocked() {
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try {
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mRemoteInstance.setClient(mClient);
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} catch (RemoteException re) {
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Slog.d(LOG_TAG, "Error setting print spooler client", re);
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}
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}
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private void clearClientLocked() {
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try {
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mRemoteInstance.setClient(null);
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} catch (RemoteException re) {
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Slog.d(LOG_TAG, "Error clearing print spooler client", re);
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}
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}
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private void throwIfDestroyedLocked() {
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if (mDestroyed) {
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throw new IllegalStateException("Cannot interact with a destroyed instance.");
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}
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}
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private void throwIfCalledOnMainThread() {
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if (Thread.currentThread() == mContext.getMainLooper().getThread()) {
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throw new RuntimeException("Cannot invoke on the main thread");
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}
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}
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private final class MyServiceConnection implements ServiceConnection {
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@Override
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public void onServiceConnected(ComponentName name, IBinder service) {
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synchronized (mLock) {
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mRemoteInstance = IPrintSpooler.Stub.asInterface(service);
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setClientLocked();
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mLock.notifyAll();
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}
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}
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@Override
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public void onServiceDisconnected(ComponentName name) {
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synchronized (mLock) {
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clearClientLocked();
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mRemoteInstance = null;
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}
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}
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}
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private static final class GetPrintJobInfosCaller
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extends TimedRemoteCaller<List<PrintJobInfo>> {
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private final IPrintSpoolerCallbacks mCallback;
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public GetPrintJobInfosCaller() {
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super(TimedRemoteCaller.DEFAULT_CALL_TIMEOUT_MILLIS);
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mCallback = new BasePrintSpoolerServiceCallbacks() {
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@Override
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public void onGetPrintJobInfosResult(List<PrintJobInfo> printJobs, int sequence) {
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onRemoteMethodResult(printJobs, sequence);
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}
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};
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}
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public List<PrintJobInfo> getPrintJobInfos(IPrintSpooler target,
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ComponentName componentName, int state, int appId)
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throws RemoteException, TimeoutException {
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final int sequence = onBeforeRemoteCall();
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target.getPrintJobInfos(mCallback, componentName, state, appId, sequence);
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return getResultTimed(sequence);
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}
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}
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private static final class GetPrintJobInfoCaller extends TimedRemoteCaller<PrintJobInfo> {
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private final IPrintSpoolerCallbacks mCallback;
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public GetPrintJobInfoCaller() {
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super(TimedRemoteCaller.DEFAULT_CALL_TIMEOUT_MILLIS);
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mCallback = new BasePrintSpoolerServiceCallbacks() {
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@Override
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public void onGetPrintJobInfoResult(PrintJobInfo printJob, int sequence) {
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onRemoteMethodResult(printJob, sequence);
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}
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};
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}
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public PrintJobInfo getPrintJobInfo(IPrintSpooler target, PrintJobId printJobId,
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int appId) throws RemoteException, TimeoutException {
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final int sequence = onBeforeRemoteCall();
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target.getPrintJobInfo(printJobId, mCallback, appId, sequence);
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return getResultTimed(sequence);
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}
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}
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private static final class SetPrintJobStateCaller extends TimedRemoteCaller<Boolean> {
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private final IPrintSpoolerCallbacks mCallback;
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public SetPrintJobStateCaller() {
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super(TimedRemoteCaller.DEFAULT_CALL_TIMEOUT_MILLIS);
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mCallback = new BasePrintSpoolerServiceCallbacks() {
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@Override
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public void onSetPrintJobStateResult(boolean success, int sequence) {
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onRemoteMethodResult(success, sequence);
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|
}
|
|
};
|
|
}
|
|
|
|
public boolean setPrintJobState(IPrintSpooler target, PrintJobId printJobId,
|
|
int status, String error) throws RemoteException, TimeoutException {
|
|
final int sequence = onBeforeRemoteCall();
|
|
target.setPrintJobState(printJobId, status, error, mCallback, sequence);
|
|
return getResultTimed(sequence);
|
|
}
|
|
}
|
|
|
|
private static final class SetPrintJobTagCaller extends TimedRemoteCaller<Boolean> {
|
|
private final IPrintSpoolerCallbacks mCallback;
|
|
|
|
public SetPrintJobTagCaller() {
|
|
super(TimedRemoteCaller.DEFAULT_CALL_TIMEOUT_MILLIS);
|
|
mCallback = new BasePrintSpoolerServiceCallbacks() {
|
|
@Override
|
|
public void onSetPrintJobTagResult(boolean success, int sequence) {
|
|
onRemoteMethodResult(success, sequence);
|
|
}
|
|
};
|
|
}
|
|
|
|
public boolean setPrintJobTag(IPrintSpooler target, PrintJobId printJobId,
|
|
String tag) throws RemoteException, TimeoutException {
|
|
final int sequence = onBeforeRemoteCall();
|
|
target.setPrintJobTag(printJobId, tag, mCallback, sequence);
|
|
return getResultTimed(sequence);
|
|
}
|
|
}
|
|
|
|
private static abstract class BasePrintSpoolerServiceCallbacks
|
|
extends IPrintSpoolerCallbacks.Stub {
|
|
@Override
|
|
public void onGetPrintJobInfosResult(List<PrintJobInfo> printJobIds, int sequence) {
|
|
/* do nothing */
|
|
}
|
|
|
|
@Override
|
|
public void onGetPrintJobInfoResult(PrintJobInfo printJob, int sequence) {
|
|
/* do nothing */
|
|
}
|
|
|
|
@Override
|
|
public void onCancelPrintJobResult(boolean canceled, int sequence) {
|
|
/* do nothing */
|
|
}
|
|
|
|
@Override
|
|
public void onSetPrintJobStateResult(boolean success, int sequece) {
|
|
/* do nothing */
|
|
}
|
|
|
|
@Override
|
|
public void onSetPrintJobTagResult(boolean success, int sequence) {
|
|
/* do nothing */
|
|
}
|
|
}
|
|
|
|
private static final class PrintSpoolerClient extends IPrintSpoolerClient.Stub {
|
|
|
|
private final WeakReference<RemotePrintSpooler> mWeakSpooler;
|
|
|
|
public PrintSpoolerClient(RemotePrintSpooler spooler) {
|
|
mWeakSpooler = new WeakReference<RemotePrintSpooler>(spooler);
|
|
}
|
|
|
|
@Override
|
|
public void onPrintJobQueued(PrintJobInfo printJob) {
|
|
RemotePrintSpooler spooler = mWeakSpooler.get();
|
|
if (spooler != null) {
|
|
final long identity = Binder.clearCallingIdentity();
|
|
try {
|
|
spooler.mCallbacks.onPrintJobQueued(printJob);
|
|
} finally {
|
|
Binder.restoreCallingIdentity(identity);
|
|
}
|
|
}
|
|
}
|
|
|
|
@Override
|
|
public void onAllPrintJobsForServiceHandled(ComponentName printService) {
|
|
RemotePrintSpooler spooler = mWeakSpooler.get();
|
|
if (spooler != null) {
|
|
final long identity = Binder.clearCallingIdentity();
|
|
try {
|
|
spooler.mCallbacks.onAllPrintJobsForServiceHandled(printService);
|
|
} finally {
|
|
Binder.restoreCallingIdentity(identity);
|
|
}
|
|
}
|
|
}
|
|
|
|
@Override
|
|
public void onAllPrintJobsHandled() {
|
|
RemotePrintSpooler spooler = mWeakSpooler.get();
|
|
if (spooler != null) {
|
|
final long identity = Binder.clearCallingIdentity();
|
|
try {
|
|
spooler.onAllPrintJobsHandled();
|
|
} finally {
|
|
Binder.restoreCallingIdentity(identity);
|
|
}
|
|
}
|
|
}
|
|
|
|
@Override
|
|
public void onPrintJobStateChanged(PrintJobInfo printJob) {
|
|
RemotePrintSpooler spooler = mWeakSpooler.get();
|
|
if (spooler != null) {
|
|
final long identity = Binder.clearCallingIdentity();
|
|
try {
|
|
spooler.onPrintJobStateChanged(printJob);
|
|
} finally {
|
|
Binder.restoreCallingIdentity(identity);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|