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libreoffice/odk/examples/DevelopersGuide/Components/Addons/JobsAddon/AsyncJob.java
Daniel Baumann 8e63e14cf6
Adding upstream version 4:25.2.3.
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
2025-06-22 16:20:04 +02:00

425 lines
17 KiB
Java

/* -*- Mode: Java; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/*************************************************************************
*
* The Contents of this file are made available subject to the terms of
* the BSD license.
*
* Copyright 2000, 2010 Oracle and/or its affiliates.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. Neither the name of Sun Microsystems, Inc. nor the names of its
* contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
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* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR
* TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE
* USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
*************************************************************************/
import com.sun.star.uno.XComponentContext;
import com.sun.star.lib.uno.helper.Factory;
import com.sun.star.lib.uno.helper.WeakBase;
import com.sun.star.lang.XServiceInfo;
import com.sun.star.task.*;
import com.sun.star.uno.*;
/** it implements a simple job component.
*
* Such jobs are executable in different ways:
* <ul>
* <li>registered for a special URL schema "vnd.sun.star.jobs:*" and used from the generic dispatch framework</li>
* <li>the global com.sun.star.task.JobExecutor service and registered for special events.</li>
* </ul>
*/
public class AsyncJob extends WeakBase implements XServiceInfo, XAsyncJob
{
public final XComponentContext m_xCmpCtx;
/** the const list of supported uno service names. */
public static final String[] SERVICENAMES = {"com.sun.star.task.AsyncJob"};
/** the const uno implementation name.
* It must be a unique value! The best naming schema seems to use
* a registered domain in reverse order ...
*/
public static final String IMPLEMENTATIONNAME = "com.sun.star.comp.framework.java.services.AsyncJob";
// interface
/** initialize a new instance of this class with default values. */
public AsyncJob( XComponentContext xCompContext )
{
m_xCmpCtx = xCompContext;
}
/** starts execution of this job.
*
* @param lArgs
* list which contains:
* <ul>
* <li>generic job configuration data</li>
* <li>job specific configuration data</li>
* <li>some environment information</li>
* <li>may optional arguments of a corresponding dispatch request</li>
* </ul>
*
* @params xListener
* callback to the executor of this job, which control our life time
*
* @throws com.sun.star.lang.IllegalArgumentException
* if given argument list seems to be wrong
*/
public synchronized void executeAsync(com.sun.star.beans.NamedValue[] lArgs ,
com.sun.star.task.XJobListener xListener)
throws com.sun.star.lang.IllegalArgumentException
{
// For asynchronous jobs a valid listener reference is guaranteed normally ...
if (xListener == null)
throw new com.sun.star.lang.IllegalArgumentException("invalid listener");
// extract all possible sub list of given argument list
com.sun.star.beans.NamedValue[] lGenericConfig = null;
com.sun.star.beans.NamedValue[] lJobConfig = null;
com.sun.star.beans.NamedValue[] lEnvironment = null;
com.sun.star.beans.NamedValue[] lDynamicData = null;
int c = lArgs.length;
for (int i=0; i<c; ++i)
{
if (lArgs[i].Name.equals("Config"))
lGenericConfig = (com.sun.star.beans.NamedValue[])com.sun.star.uno.AnyConverter.toArray(lArgs[i].Value);
else
if (lArgs[i].Name.equals("JobConfig"))
lJobConfig = (com.sun.star.beans.NamedValue[])com.sun.star.uno.AnyConverter.toArray(lArgs[i].Value);
else
if (lArgs[i].Name.equals("Environment"))
lEnvironment = (com.sun.star.beans.NamedValue[])com.sun.star.uno.AnyConverter.toArray(lArgs[i].Value);
else
if (lArgs[i].Name.equals("DynamicData"))
lDynamicData = (com.sun.star.beans.NamedValue[])com.sun.star.uno.AnyConverter.toArray(lArgs[i].Value);
}
// Analyze the environment info. This sub list is the only guaranteed one!
if (lEnvironment == null)
throw new com.sun.star.lang.IllegalArgumentException("no environment");
String sEnvType = null;
String sEventName = null;
com.sun.star.frame.XFrame xFrame = null;
c = lEnvironment.length;
for (int i=0; i<c; ++i)
{
if (lEnvironment[i].Name.equals("EnvType"))
sEnvType = com.sun.star.uno.AnyConverter.toString(lEnvironment[i].Value);
else
if (lEnvironment[i].Name.equals("EventName"))
sEventName = com.sun.star.uno.AnyConverter.toString(lEnvironment[i].Value);
else
if (lEnvironment[i].Name.equals("Frame"))
xFrame = (com.sun.star.frame.XFrame)com.sun.star.uno.AnyConverter.toObject(
new com.sun.star.uno.Type(com.sun.star.frame.XFrame.class),
lEnvironment[i].Value);
}
// Further the environment property "EnvType" is required as minimum.
if (
(sEnvType==null) ||
(
(!sEnvType.equals("EXECUTOR")) &&
(!sEnvType.equals("DISPATCH"))
)
)
{
String sMessage = "\"" + sEnvType + "\" isn't a valid value for EnvType";
throw new com.sun.star.lang.IllegalArgumentException(sMessage);
}
// Analyze the set of shared config data.
if (lGenericConfig!=null)
{
c = lGenericConfig.length;
for (int i=0; i<c; ++i)
{
if (lGenericConfig[i].Name.equals("Alias"))
com.sun.star.uno.AnyConverter.toString(lGenericConfig[i].Value);
}
}
// do your job ...
// Here we print out all found arguments.
String sOut = formatOutArgs(lGenericConfig, lJobConfig, lEnvironment, lDynamicData);
if (xFrame != null)
showInfoModal(xFrame.getContainerWindow(), "Arguments of AsyncJob initialization ...", sOut);
else
showInfoNonModal("Arguments of AsyncJob initialization ...", sOut);
// use return value to start different actions
// But look for the right environment. Some options make no sense inside the wrong env.
com.sun.star.beans.NamedValue aDeactivation = null;
com.sun.star.beans.NamedValue aDispatchResult = null;
com.sun.star.beans.NamedValue aSaveRequest = null;
// SaveArguments will be made everytimes!
c = 1;
if (lJobConfig==null)
lJobConfig = new com.sun.star.beans.NamedValue[1];
lJobConfig[0] = new com.sun.star.beans.NamedValue();
lJobConfig[0].Name = "arg_1";
lJobConfig[0].Value = "val_1";
aSaveRequest = new com.sun.star.beans.NamedValue();
aSaveRequest.Name = "SaveArguments";
aSaveRequest.Value = lJobConfig;
// Deactivation is useful inside EXECUTOR environment only
if (sEnvType.equals("EXECUTOR"))
{
++c;
aDeactivation = new com.sun.star.beans.NamedValue();
aDeactivation.Name = "Deactivate";
aDeactivation.Value = Boolean.TRUE;
}
// Sending of result events is useful inside DISPATCH environment only
if (sEnvType.equals("DISPATCH"))
{
++c;
aDispatchResult = new com.sun.star.beans.NamedValue();
aDispatchResult.Name = "SendDispatchResult";
aDispatchResult.Value = new com.sun.star.frame.DispatchResultEvent(this, com.sun.star.frame.DispatchResultState.SUCCESS, null);
}
// pack it together for return
int i=0;
com.sun.star.beans.NamedValue[] lReturn = new com.sun.star.beans.NamedValue[c];
lReturn[i++] = aSaveRequest;
if (aDeactivation!=null)
lReturn[i++] = aDeactivation;
if (aDispatchResult!=null)
lReturn[i++] = aDispatchResult;
xListener.jobFinished(this, lReturn);
}
/** show an info box with the UNO based toolkit.
*
* It tries to use the container window of a may well know
* office frame as parent. If such parent window could be located,
* the info box can be shown in modal mode. If a parent is missing
* (because this job is called inside an EXECUTOR environment, which
* does not set any frame context here) the info box can't be created!
* Because the toolkit needs parents for non top level windows...
* In that case the only way is to implement this info box
* native or make it non modal using java dialogs inside its own thread...
* (see showInfoNonModal() too)
*
* @param xParent
* used as parent window of the shown info box.
*
* @param sTitle
* is shown as title of the info box.
*
* @param sMessage
* included the message body, which is shown as info.
*/
private void showInfoModal( com.sun.star.awt.XWindow xParent ,
String sTitle ,
String sMessage )
{
try
{
// get access to the office toolkit environment
com.sun.star.awt.XToolkit xKit = UnoRuntime.queryInterface(
com.sun.star.awt.XToolkit.class,
m_xCmpCtx.getServiceManager().createInstanceWithContext("com.sun.star.awt.Toolkit",
m_xCmpCtx));
// describe the info box ini its parameters
com.sun.star.awt.WindowDescriptor aDescriptor = new com.sun.star.awt.WindowDescriptor();
aDescriptor.WindowServiceName = "infobox";
aDescriptor.Bounds = new com.sun.star.awt.Rectangle(0,0,300,200);
aDescriptor.WindowAttributes = com.sun.star.awt.WindowAttribute.BORDER |
com.sun.star.awt.WindowAttribute.MOVEABLE |
com.sun.star.awt.WindowAttribute.CLOSEABLE;
aDescriptor.Type = com.sun.star.awt.WindowClass.MODALTOP;
aDescriptor.ParentIndex = 1;
aDescriptor.Parent = UnoRuntime.queryInterface(
com.sun.star.awt.XWindowPeer.class,
xParent);
// create the info box window
com.sun.star.awt.XWindowPeer xPeer = xKit.createWindow(aDescriptor);
com.sun.star.awt.XMessageBox xInfoBox = UnoRuntime.queryInterface(
com.sun.star.awt.XMessageBox.class,
xPeer);
if (xInfoBox == null)
return;
// fill it with all given information and show it
xInfoBox.setCaptionText(sTitle);
xInfoBox.setMessageText(sMessage);
xInfoBox.execute();
}
catch(Throwable exIgnore)
{
// ignore any problem, which can occur here.
// It's not really a bug for this example job, if
// it's message could not be printed out!
}
}
private void showInfoNonModal( String sTitle ,
String sMessage )
{
// Couldn't be implemented really using the toolkit...
// Because we need a parent anytime.
// And showing e.g. a Java dialog can make some trouble
// inside office... but we have no chance here.
final String sFinalTitle = sTitle;
final String sFinalMessage = sMessage;
// On macOS, AWT/Swing must not be accessed from the AppKit thread, so call
// SwingUtilities.invokeLater always on a fresh thread to avoid that problem
// (also, the current thread must not wait for that fresh thread to terminate,
// as that would cause a deadlock if this thread is the AppKit thread):
final Runnable doRun = new Runnable() {
public void run() {
javax.swing.JOptionPane.showMessageDialog(null, sFinalMessage, sFinalTitle, javax.swing.JOptionPane.INFORMATION_MESSAGE);
}
};
new Thread( doRun ) {
@Override
public void run() { javax.swing.SwingUtilities.invokeLater(doRun); }
}.start();
}
/** helper to print out the given argument list.
*
* @param lGenericConfig
* contains all shared configuration items for a job
*
* @param lJobConfig
* contains all job specific configuration items
*
* @param lEnvironment
* contains some environment information
*
* @param lDynamicData
* contains optional data of a might corresponding dispatch() request
*/
private String formatOutArgs(com.sun.star.beans.NamedValue[] lGenericConfig,
com.sun.star.beans.NamedValue[] lJobConfig ,
com.sun.star.beans.NamedValue[] lEnvironment ,
com.sun.star.beans.NamedValue[] lDynamicData )
{
StringBuffer sOut = new StringBuffer(1024);
sOut.append("list \"Config\": ");
if (lGenericConfig==null)
sOut.append("0 items\n");
else
{
int c = lGenericConfig.length;
sOut.append(c+" items\n");
for (int i=0; i<c; ++i)
sOut.append("\t["+i+"] \""+lGenericConfig[i].Name+"\" = {"+lGenericConfig[i].Value+"}\n");
}
sOut.append("list \"JobConfig\": ");
if (lJobConfig==null)
sOut.append("0 items\n");
else
{
int c = lJobConfig.length;
sOut.append(c+" items\n");
for (int i=0; i<c; ++i)
sOut.append("\t["+i+"] \""+lJobConfig[i].Name+"\" = {"+lJobConfig[i].Value+"}\n");
}
sOut.append("list \"Environment\": ");
if (lEnvironment==null)
sOut.append("0 items\n");
else
{
int c = lEnvironment.length;
sOut.append(c+" items\n");
for (int i=0; i<c; ++i)
sOut.append("\t["+i+"] \""+lEnvironment[i].Name+"\" = {"+lEnvironment[i].Value+"}\n");
}
sOut.append("list \"DynamicData\": ");
if (lDynamicData==null)
sOut.append("0 items\n");
else
{
int c = lDynamicData.length;
sOut.append(c+" items\n");
for (int i=0; i<c; ++i)
sOut.append("\t["+i+"] \""+lDynamicData[i].Name+"\" = {"+lDynamicData[i].Value+"}\n");
}
return sOut.toString();
}
public String[] getSupportedServiceNames() {
return SERVICENAMES;
}
public boolean supportsService( String sService ) {
int len = SERVICENAMES.length;
for( int i=0; i < len; i++) {
if ( sService.equals( SERVICENAMES[i] ) )
return true;
}
return false;
}
public String getImplementationName() {
return( AsyncJob.class.getName() );
}
public synchronized static com.sun.star.lang.XSingleComponentFactory __getComponentFactory(String sImplName)
{
com.sun.star.lang.XSingleComponentFactory xFactory = null;
if (sImplName.equals(AsyncJob.IMPLEMENTATIONNAME))
xFactory = Factory.createComponentFactory(AsyncJob.class, SERVICENAMES);
return xFactory;
}
}
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */