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<title>KJob</title>
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KDE 4.9 PyKDE API Reference
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<li>KDE's Python API</li>
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<h1>KJob Class Reference</h1>
<code>from PyKDE4.kdecore import *</code>
<p>
Inherits: QObject<br />
Subclasses: <a href="../kdecore/KCompositeJob.html">KCompositeJob</a><br />
<h2>Detailed Description</h2>
<p>The base class for all jobs.
</p>
<p>
For all jobs created in an application, the code looks like
<pre class="fragment">
void SomeClass.methodWithAsynchronousJobCall()
{
KJob * job = someoperation( some parameters );
connect( job, SIGNAL( result( KJob * ) ),
this, SLOT( handleResult( KJob * ) ) );
job->start();
}
</pre>
(other connects, specific to the job)
</p>
<p>
And handleResult is usually at least:
<pre class="fragment">
void SomeClass.handleResult( KJob *job )
{
if ( job->error() )
doSomething();
}
</pre>
</p>
<p>
With the synchronous interface the code looks like
<pre class="fragment">
void SomeClass.methodWithSynchronousJobCall()
{
KJob *job = someoperation( some parameters );
if ( !job->exec() )
{
// An error occurred
}
else
{
// Do something
}
}
</pre>
</p>
<p>
Subclasses must implement start(), which should trigger
the execution of the job (although the work should be
done asynchronously). errorString() should also be
reimplemented by any subclasses that introduce new
error codes.
</p>
<p>
@note: KJob and its subclasses are meant to be used
in a fire-and-forget way. Jobs will delete themselves
when they finish using deleteLater() (although this
behaviour can be changed), so a job instance will
disappear after the next event loop run.
</p>
<table border="0" cellpadding="0" cellspacing="0"><tr><td colspan="2"><br><h2>Enumerations</h2></td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top"><a class="el" href="#obj224577260"><anonymous></a> </td><td class="memItemRight" valign="bottom">{ NoError, KilledJobError, UserDefinedError }</td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top"><a class="el" href="#Capability">Capability</a> </td><td class="memItemRight" valign="bottom">{ NoCapabilities, Killable, Suspendable }</td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top"><a class="el" href="#KillVerbosity">KillVerbosity</a> </td><td class="memItemRight" valign="bottom">{ Quietly, EmitResult }</td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top"><a class="el" href="#Unit">Unit</a> </td><td class="memItemRight" valign="bottom">{ Bytes, Files, Directories }</td></tr>
<tr><td colspan="2"><br><h2>Signals</h2></td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top"> </td><td class="memItemRight" valign="bottom"><a class="el" href="#description">description</a> (<a href="../kdecore/KJob.html">KJob</a> job, QString title, (QString,QString) field1=qMakePair(QString(),QString()), (QString,QString) field2=qMakePair(QString(),QString()))</td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top"> </td><td class="memItemRight" valign="bottom"><a class="el" href="#infoMessage">infoMessage</a> (<a href="../kdecore/KJob.html">KJob</a> job, QString plain, QString rich=QString())</td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top"> </td><td class="memItemRight" valign="bottom"><a class="el" href="#result">result</a> (<a href="../kdecore/KJob.html">KJob</a> job)</td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top"> </td><td class="memItemRight" valign="bottom"><a class="el" href="#warning">warning</a> (<a href="../kdecore/KJob.html">KJob</a> job, QString plain, QString rich=QString())</td></tr>
<tr><td colspan="2"><br><h2>Methods</h2></td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top"> </td><td class="memItemRight" valign="bottom"><a class="el" href="#KJob">__init__</a> (self, QObject parent=0)</td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top"><a href="../kdecore/KJob.html">KJob.Capabilities</a> </td><td class="memItemRight" valign="bottom"><a class="el" href="#capabilities">capabilities</a> (self)</td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top">bool </td><td class="memItemRight" valign="bottom"><a class="el" href="#doKill">doKill</a> (self)</td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top">bool </td><td class="memItemRight" valign="bottom"><a class="el" href="#doResume">doResume</a> (self)</td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top">bool </td><td class="memItemRight" valign="bottom"><a class="el" href="#doSuspend">doSuspend</a> (self)</td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top"> </td><td class="memItemRight" valign="bottom"><a class="el" href="#emitPercent">emitPercent</a> (self, long processedAmount, long totalAmount)</td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top"> </td><td class="memItemRight" valign="bottom"><a class="el" href="#emitResult">emitResult</a> (self)</td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top"> </td><td class="memItemRight" valign="bottom"><a class="el" href="#emitSpeed">emitSpeed</a> (self, long speed)</td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top">int </td><td class="memItemRight" valign="bottom"><a class="el" href="#error">error</a> (self)</td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top">QString </td><td class="memItemRight" valign="bottom"><a class="el" href="#errorString">errorString</a> (self)</td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top">QString </td><td class="memItemRight" valign="bottom"><a class="el" href="#errorText">errorText</a> (self)</td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top">bool </td><td class="memItemRight" valign="bottom"><a class="el" href="#exec">exec_</a> (self)</td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top">bool </td><td class="memItemRight" valign="bottom"><a class="el" href="#isAutoDelete">isAutoDelete</a> (self)</td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top">bool </td><td class="memItemRight" valign="bottom"><a class="el" href="#isSuspended">isSuspended</a> (self)</td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top">bool </td><td class="memItemRight" valign="bottom"><a class="el" href="#kill">kill</a> (self, <a href="../kdecore/KJob.html#KillVerbosity">KJob.KillVerbosity</a> verbosity=KJob.Quietly)</td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top">long </td><td class="memItemRight" valign="bottom"><a class="el" href="#percent">percent</a> (self)</td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top">long </td><td class="memItemRight" valign="bottom"><a class="el" href="#processedAmount">processedAmount</a> (self, <a href="../kdecore/KJob.html#Unit">KJob.Unit</a> unit)</td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top">bool </td><td class="memItemRight" valign="bottom"><a class="el" href="#resume">resume</a> (self)</td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top"> </td><td class="memItemRight" valign="bottom"><a class="el" href="#setAutoDelete">setAutoDelete</a> (self, bool autodelete)</td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top"> </td><td class="memItemRight" valign="bottom"><a class="el" href="#setCapabilities">setCapabilities</a> (self, <a href="../kdecore/KJob.html">KJob.Capabilities</a> capabilities)</td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top"> </td><td class="memItemRight" valign="bottom"><a class="el" href="#setError">setError</a> (self, int errorCode)</td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top"> </td><td class="memItemRight" valign="bottom"><a class="el" href="#setErrorText">setErrorText</a> (self, QString errorText)</td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top"> </td><td class="memItemRight" valign="bottom"><a class="el" href="#setPercent">setPercent</a> (self, long percentage)</td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top"> </td><td class="memItemRight" valign="bottom"><a class="el" href="#setProcessedAmount">setProcessedAmount</a> (self, <a href="../kdecore/KJob.html#Unit">KJob.Unit</a> unit, long amount)</td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top"> </td><td class="memItemRight" valign="bottom"><a class="el" href="#setTotalAmount">setTotalAmount</a> (self, <a href="../kdecore/KJob.html#Unit">KJob.Unit</a> unit, long amount)</td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top"> </td><td class="memItemRight" valign="bottom"><a class="el" href="#setUiDelegate">setUiDelegate</a> (self, <a href="../kdecore/KJobUiDelegate.html">KJobUiDelegate</a> delegate)</td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top"> </td><td class="memItemRight" valign="bottom"><a class="el" href="#start">start</a> (self)</td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top">bool </td><td class="memItemRight" valign="bottom"><a class="el" href="#suspend">suspend</a> (self)</td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top">long </td><td class="memItemRight" valign="bottom"><a class="el" href="#totalAmount">totalAmount</a> (self, <a href="../kdecore/KJob.html#Unit">KJob.Unit</a> unit)</td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top"><a href="../kdecore/KJobUiDelegate.html">KJobUiDelegate</a> </td><td class="memItemRight" valign="bottom"><a class="el" href="#uiDelegate">uiDelegate</a> (self)</td></tr>
</table>
<hr><h2>Signal Documentation</h2><a class="anchor" name="description"></a>
<div class="memitem">
<div class="memproto">
<table class="memname"><tr>
<td class="memname"> description</td>
<td>(</td>
<td class="paramtype"><a href="../kdecore/KJob.html">KJob</a> </td>
<td class="paramname"><em>job</em>, </td>
</tr>
<tr>
<td class="memname"></td>
<td></td>
<td class="paramtype">QString </td>
<td class="paramname"><em>title</em>, </td>
</tr>
<tr>
<td class="memname"></td>
<td></td>
<td class="paramtype">(QString,QString) </td>
<td class="paramname"><em>field1=qMakePair(QString(),QString())</em>, </td>
</tr>
<tr>
<td class="memname"></td>
<td></td>
<td class="paramtype">(QString,QString) </td>
<td class="paramname"><em>field2=qMakePair(QString(),QString())</em></td>
</tr>
<tr>
<td></td>
<td>)</td>
<td></td>
<td></td>
<td width="100%"> </td>
</tr></table>
</div>
<div class="memdoc"><p>Emitted to display general description of this job. A description has
a title and two optional fields which can be used to complete the
description.
</p>
<p>
Examples of titles are "Copying", "Creating resource", etc.
The fields of the description can be "Source" with an URL, and,
"Destination" with an URL for a "Copying" description.
</p><dl compact><dt><b>Parameters:</b></dt><dd>
<table border="0" cellspacing="2" cellpadding="0">
<tr><td></td><td valign="top"><em>job</em> </td><td> the job that emitted this signal
<tr><td></td><td valign="top"><em>title</em> </td><td> the general description of the job
<tr><td></td><td valign="top"><em>field1</em> </td><td> first field (localized name and value)
<tr><td></td><td valign="top"><em>field2</em> </td><td> second field (localized name and value)
</td></tr>
</table></dl>
<p>
</p><dl compact><dt><b>Signal syntax:</b></dt><dd><code>QObject.connect(source, SIGNAL("description(KJob*, const QString&, const QPair<QString,QString>&, const QPair<QString,QString>&)"), target_slot)</code></dd></dl></div></div><a class="anchor" name="infoMessage"></a>
<div class="memitem">
<div class="memproto">
<table class="memname"><tr>
<td class="memname"> infoMessage</td>
<td>(</td>
<td class="paramtype"><a href="../kdecore/KJob.html">KJob</a> </td>
<td class="paramname"><em>job</em>, </td>
</tr>
<tr>
<td class="memname"></td>
<td></td>
<td class="paramtype">QString </td>
<td class="paramname"><em>plain</em>, </td>
</tr>
<tr>
<td class="memname"></td>
<td></td>
<td class="paramtype">QString </td>
<td class="paramname"><em>rich=QString()</em></td>
</tr>
<tr>
<td></td>
<td>)</td>
<td></td>
<td></td>
<td width="100%"> </td>
</tr></table>
</div>
<div class="memdoc"><p>Emitted to display state information about this job.
Examples of message are "Resolving host", "Connecting to host...", etc.
</p>
<p>
</p><dl compact><dt><b>Parameters:</b></dt><dd>
<table border="0" cellspacing="2" cellpadding="0">
<tr><td></td><td valign="top"><em>job</em> </td><td> the job that emitted this signal
<tr><td></td><td valign="top"><em>plain</em> </td><td> the info message
<tr><td></td><td valign="top"><em>rich</em> </td><td> the rich text version of the message, or QString() is none is available
</td></tr>
</table></dl>
<p>
</p><dl compact><dt><b>Signal syntax:</b></dt><dd><code>QObject.connect(source, SIGNAL("infoMessage(KJob*, const QString&, const QString&)"), target_slot)</code></dd></dl></div></div><a class="anchor" name="result"></a>
<div class="memitem">
<div class="memproto">
<table class="memname"><tr>
<td class="memname"> result</td>
<td>(</td>
<td class="paramtype"><a href="../kdecore/KJob.html">KJob</a> </td>
<td class="paramname"><em>job</em></td>
</tr>
<tr>
<td></td>
<td>)</td>
<td></td>
<td></td>
<td width="100%"> </td>
</tr></table>
</div>
<div class="memdoc"><p>Emitted when the job is finished (except when killed with KJob.Quietly).
</p>
<p>
Use error to know if the job was finished with error.
</p>
<p>
This is a private signal, it can't be emitted directly by subclasses of
KJob, use emitResult() instead.
</p>
<p>
Please connect to this signal instead of finished.
</p>
<p>
</p><dl compact><dt><b>Parameters:</b></dt><dd>
<table border="0" cellspacing="2" cellpadding="0">
<tr><td></td><td valign="top"><em>job</em> </td><td> the job that emitted this signal
</td></tr>
</table></dl>
<p> <dl class="see" compact><dt><b>See also:</b></dt><dd> kill
</dd></dl>
</p><dl compact><dt><b>Signal syntax:</b></dt><dd><code>QObject.connect(source, SIGNAL("result(KJob*)"), target_slot)</code></dd></dl></div></div><a class="anchor" name="warning"></a>
<div class="memitem">
<div class="memproto">
<table class="memname"><tr>
<td class="memname"> warning</td>
<td>(</td>
<td class="paramtype"><a href="../kdecore/KJob.html">KJob</a> </td>
<td class="paramname"><em>job</em>, </td>
</tr>
<tr>
<td class="memname"></td>
<td></td>
<td class="paramtype">QString </td>
<td class="paramname"><em>plain</em>, </td>
</tr>
<tr>
<td class="memname"></td>
<td></td>
<td class="paramtype">QString </td>
<td class="paramname"><em>rich=QString()</em></td>
</tr>
<tr>
<td></td>
<td>)</td>
<td></td>
<td></td>
<td width="100%"> </td>
</tr></table>
</div>
<div class="memdoc"><p>Emitted to display a warning about this job.
</p>
<p>
</p><dl compact><dt><b>Parameters:</b></dt><dd>
<table border="0" cellspacing="2" cellpadding="0">
<tr><td></td><td valign="top"><em>job</em> </td><td> the job that emitted this signal
<tr><td></td><td valign="top"><em>plain</em> </td><td> the warning message
<tr><td></td><td valign="top"><em>rich</em> </td><td> the rich text version of the message, or QString() is none is available
</td></tr>
</table></dl>
<p>
</p><dl compact><dt><b>Signal syntax:</b></dt><dd><code>QObject.connect(source, SIGNAL("warning(KJob*, const QString&, const QString&)"), target_slot)</code></dd></dl></div></div><hr><h2>Method Documentation</h2><a class="anchor" name="KJob"></a>
<div class="memitem">
<div class="memproto">
<table class="memname"><tr>
<td class="memname">__init__</td>
<td>(</td>
<td class="paramtype"> <em>self</em>, </td>
<td class="paramname"></td>
</tr><tr>
<td class="memname"></td>
<td></td>
<td class="paramtype">QObject </td>
<td class="paramname"><em>parent=0</em></td>
</tr>
<tr>
<td></td>
<td>)</td>
<td></td>
<td></td>
<td width="100%"> </td>
</tr></table>
</div>
<div class="memdoc"><p>Creates a new KJob object.
</p>
<p>
</p><dl compact><dt><b>Parameters:</b></dt><dd>
<table border="0" cellspacing="2" cellpadding="0">
<tr><td></td><td valign="top"><em>parent</em> </td><td> the parent QObject
</td></tr>
</table></dl>
<p>
</p></div></div><a class="anchor" name="capabilities"></a>
<div class="memitem">
<div class="memproto">
<table class="memname"><tr>
<td class="memname"><a href="../kdecore/KJob.html">KJob.Capabilities</a> capabilities</td>
<td>(</td>
<td class="paramtype"> </td>
<td class="paramname"><em>self</em> )</td>
<td width="100%"> </td>
</tr>
</table>
</div>
<div class="memdoc"><p>Returns the capabilities of this job.
</p>
<p>
<dl class="return" compact><dt><b>Returns:</b></dt><dd> the capabilities that this job supports
</dd></dl> <dl class="see" compact><dt><b>See also:</b></dt><dd> setCapabilities()
</dd></dl>
</p></div></div><a class="anchor" name="doKill"></a>
<div class="memitem">
<div class="memproto">
<table class="memname"><tr>
<td class="memname">bool doKill</td>
<td>(</td>
<td class="paramtype"> </td>
<td class="paramname"><em>self</em> )</td>
<td width="100%"> </td>
</tr>
</table>
</div>
<div class="memdoc"><p>Aborts this job quietly.
</p>
<p>
This simply kills the job, no error reporting or job deletion should be involved.
</p>
<p>
<dl class="return" compact><dt><b>Returns:</b></dt><dd> true if the operation is supported and succeeded, false otherwise
</dd></dl>
</p></div></div><a class="anchor" name="doResume"></a>
<div class="memitem">
<div class="memproto">
<table class="memname"><tr>
<td class="memname">bool doResume</td>
<td>(</td>
<td class="paramtype"> </td>
<td class="paramname"><em>self</em> )</td>
<td width="100%"> </td>
</tr>
</table>
</div>
<div class="memdoc"><p>Resumes this job.
</p>
<p>
<dl class="return" compact><dt><b>Returns:</b></dt><dd> true if the operation is supported and succeeded, false otherwise
</dd></dl>
</p></div></div><a class="anchor" name="doSuspend"></a>
<div class="memitem">
<div class="memproto">
<table class="memname"><tr>
<td class="memname">bool doSuspend</td>
<td>(</td>
<td class="paramtype"> </td>
<td class="paramname"><em>self</em> )</td>
<td width="100%"> </td>
</tr>
</table>
</div>
<div class="memdoc"><p>Suspends this job.
</p>
<p>
<dl class="return" compact><dt><b>Returns:</b></dt><dd> true if the operation is supported and succeeded, false otherwise
</dd></dl>
</p></div></div><a class="anchor" name="emitPercent"></a>
<div class="memitem">
<div class="memproto">
<table class="memname"><tr>
<td class="memname"> emitPercent</td>
<td>(</td>
<td class="paramtype"> <em>self</em>, </td>
<td class="paramname"></td>
</tr><tr>
<td class="memname"></td>
<td></td>
<td class="paramtype">long </td>
<td class="paramname"><em>processedAmount</em>, </td>
</tr>
<tr>
<td class="memname"></td>
<td></td>
<td class="paramtype">long </td>
<td class="paramname"><em>totalAmount</em></td>
</tr>
<tr>
<td></td>
<td>)</td>
<td></td>
<td></td>
<td width="100%"> </td>
</tr></table>
</div>
<div class="memdoc"><p>Utility function for inherited jobs.
Emits the percent signal if bigger than previous value,
after calculating it from the parameters.
</p>
<p>
</p><dl compact><dt><b>Parameters:</b></dt><dd>
<table border="0" cellspacing="2" cellpadding="0">
<tr><td></td><td valign="top"><em>processedAmount</em> </td><td> the processed amount
<tr><td></td><td valign="top"><em>totalAmount</em> </td><td> the total amount
</td></tr> </table></dl>
<p> <dl class="see" compact><dt><b>See also:</b></dt><dd> percent()
</dd></dl>
</p></div></div><a class="anchor" name="emitResult"></a>
<div class="memitem">
<div class="memproto">
<table class="memname"><tr>
<td class="memname"> emitResult</td>
<td>(</td>
<td class="paramtype"> </td>
<td class="paramname"><em>self</em> )</td>
<td width="100%"> </td>
</tr>
</table>
</div>
<div class="memdoc"><p>Utility function to emit the result signal, and suicide this job.
It first notifies the observers to hide the progress for this job using
the finished() signal.
</p>
<p>
@note: Deletes this job using deleteLater().
</p>
<p>
<dl class="see" compact><dt><b>See also:</b></dt><dd> result()
</dd></dl> <dl class="see" compact><dt><b>See also:</b></dt><dd> finished()
</dd></dl>
</p></div></div><a class="anchor" name="emitSpeed"></a>
<div class="memitem">
<div class="memproto">
<table class="memname"><tr>
<td class="memname"> emitSpeed</td>
<td>(</td>
<td class="paramtype"> <em>self</em>, </td>
<td class="paramname"></td>
</tr><tr>
<td class="memname"></td>
<td></td>
<td class="paramtype">long </td>
<td class="paramname"><em>speed</em></td>
</tr>
<tr>
<td></td>
<td>)</td>
<td></td>
<td></td>
<td width="100%"> </td>
</tr></table>
</div>
<div class="memdoc"><p>Utility function for inherited jobs.
Emits the speed signal and starts the timer for removing that info
</p>
<p>
</p><dl compact><dt><b>Parameters:</b></dt><dd>
<table border="0" cellspacing="2" cellpadding="0">
<tr><td></td><td valign="top"><em>speed</em> </td><td> the speed in bytes/s
</td></tr>
</table></dl>
<p>
</p></div></div><a class="anchor" name="error"></a>
<div class="memitem">
<div class="memproto">
<table class="memname"><tr>
<td class="memname">int error</td>
<td>(</td>
<td class="paramtype"> </td>
<td class="paramname"><em>self</em> )</td>
<td width="100%"> </td>
</tr>
</table>
</div>
<div class="memdoc"><p>Returns the error code, if there has been an error.
</p>
<p>
Only call this method from the slot connected to result().
</p>
<p>
<dl class="return" compact><dt><b>Returns:</b></dt><dd> the error code for this job, 0 if no error.
</dd></dl>
</p></div></div><a class="anchor" name="errorString"></a>
<div class="memitem">
<div class="memproto">
<table class="memname"><tr>
<td class="memname">QString errorString</td>
<td>(</td>
<td class="paramtype"> </td>
<td class="paramname"><em>self</em> )</td>
<td width="100%"> </td>
</tr>
</table>
</div>
<div class="memdoc"><p>A human-readable error message.
</p>
<p>
This provides a translated, human-readable description of the
error. Only call if error is not 0.
</p>
<p>
Subclasses should implement this to create a translated
error message from the error code and error text.
For example:
<pre class="fragment">
if (error() == ReadFailed)
i18n( "Could not read \"%1\"", errorText() );
</pre>
</p>
<p>
<dl class="return" compact><dt><b>Returns:</b></dt><dd> a translated error message, providing error() is 0
</dd></dl>
</p></div></div><a class="anchor" name="errorText"></a>
<div class="memitem">
<div class="memproto">
<table class="memname"><tr>
<td class="memname">QString errorText</td>
<td>(</td>
<td class="paramtype"> </td>
<td class="paramname"><em>self</em> )</td>
<td width="100%"> </td>
</tr>
</table>
</div>
<div class="memdoc"><p>Returns the error text if there has been an error.
</p>
<p>
Only call if error is not 0.
</p>
<p>
This is usually some extra data associated with the error,
such as a URL. Use errorString() to get a human-readable,
translated message.
</p>
<p>
<dl class="return" compact><dt><b>Returns:</b></dt><dd> a string to help understand the error
</dd></dl>
</p></div></div><a class="anchor" name="exec"></a>
<div class="memitem">
<div class="memproto">
<table class="memname"><tr>
<td class="memname">bool exec_</td>
<td>(</td>
<td class="paramtype"> </td>
<td class="paramname"><em>self</em> )</td>
<td width="100%"> </td>
</tr>
</table>
</div>
<div class="memdoc"><p>Executes the job synchronously.
</p>
<p>
This will start a nested QEventLoop internally. Nested event loop can be dangerous and
can have unintended side effects, you should avoid calling exec() whenever you can and use the
asynchronous interface of KJob instead.
</p>
<p>
Should you indeed call this method, you need to make sure that all callers are reentrant,
so that events delivered by the inner event loop don't cause non-reentrant functions to be
called, which usually wreaks havoc.
</p>
<p>
Note that the event loop started by this method does not process user input events, which means
your user interface will effectivly be blocked. Other events like paint or network events are
still being processed. The advantage of not processing user input events is that the chance of
accidental reentrancy is greatly reduced. Still you should avoid calling this function.
</p>
<p>
<dl class="return" compact><dt><b>Returns:</b></dt><dd> true if the job has been executed without error, false otherwise
</dd></dl>
</p></div></div><a class="anchor" name="isAutoDelete"></a>
<div class="memitem">
<div class="memproto">
<table class="memname"><tr>
<td class="memname">bool isAutoDelete</td>
<td>(</td>
<td class="paramtype"> </td>
<td class="paramname"><em>self</em> )</td>
<td width="100%"> </td>
</tr>
</table>
</div>
<div class="memdoc"><p>Returns whether this job automatically deletes itself once
the job is finished.
</p>
<p>
<dl class="return" compact><dt><b>Returns:</b></dt><dd> whether the job is deleted automatically after
finishing.
</dd></dl>
</p></div></div><a class="anchor" name="isSuspended"></a>
<div class="memitem">
<div class="memproto">
<table class="memname"><tr>
<td class="memname">bool isSuspended</td>
<td>(</td>
<td class="paramtype"> </td>
<td class="paramname"><em>self</em> )</td>
<td width="100%"> </td>
</tr>
</table>
</div>
<div class="memdoc"><p>Returns if the job was suspended with the suspend() call.
</p>
<p>
<dl class="return" compact><dt><b>Returns:</b></dt><dd> if the job was suspended
</dd></dl> <dl class="see" compact><dt><b>See also:</b></dt><dd> suspend() resume()
</dd></dl>
</p></div></div><a class="anchor" name="kill"></a>
<div class="memitem">
<div class="memproto">
<table class="memname"><tr>
<td class="memname">bool kill</td>
<td>(</td>
<td class="paramtype"> <em>self</em>, </td>
<td class="paramname"></td>
</tr><tr>
<td class="memname"></td>
<td></td>
<td class="paramtype"><a href="../kdecore/KJob.html#KillVerbosity">KJob.KillVerbosity</a> </td>
<td class="paramname"><em>verbosity=KJob.Quietly</em></td>
</tr>
<tr>
<td></td>
<td>)</td>
<td></td>
<td></td>
<td width="100%"> </td>
</tr></table>
</div>
<div class="memdoc"><p>Aborts this job.
</p>
<p>
This kills and deletes the job.
</p>
<p>
</p><dl compact><dt><b>Parameters:</b></dt><dd>
<table border="0" cellspacing="2" cellpadding="0">
<tr><td></td><td valign="top"><em>verbosity</em> </td><td> if equals to EmitResult, Job will emit signal result
and ask uiserver to close the progress window.
<b>verbosity</b> is set to EmitResult for subjobs. Whether applications
should call with Quietly or EmitResult depends on whether they rely
on result being emitted or not. Please notice that if <b>verbosity</b> is
set to Quietly, signal result will NOT be emitted.
</td></tr> </table></dl>
<p> <dl class="return" compact><dt><b>Returns:</b></dt><dd> true if the operation is supported and succeeded, false otherwise
</dd></dl>
</p></div></div><a class="anchor" name="percent"></a>
<div class="memitem">
<div class="memproto">
<table class="memname"><tr>
<td class="memname">long percent</td>
<td>(</td>
<td class="paramtype"> </td>
<td class="paramname"><em>self</em> )</td>
<td width="100%"> </td>
</tr>
</table>
</div>
<div class="memdoc"><p>Progress signal showing the overall progress of the job
This is valid for any kind of job, and allows using a
a progress bar very easily. (see KProgressBar).
Note that this signal is not emitted for finished jobs.
</p>
<p>
This is a private signal, it can't be emitted directly by subclasses of
KJob, use emitPercent(), setPercent() setTotalAmount() or
setProcessedAmount() instead.
</p>
<p>
</p><dl compact><dt><b>Parameters:</b></dt><dd>
<table border="0" cellspacing="2" cellpadding="0">
<tr><td></td><td valign="top"><em>job</em> </td><td> the job that emitted this signal
<tr><td></td><td valign="top"><em>percent</em> </td><td> the percentage
</td></tr>
</table></dl>
<p>
</p></div></div><a class="anchor" name="processedAmount"></a>
<div class="memitem">
<div class="memproto">
<table class="memname"><tr>
<td class="memname">long processedAmount</td>
<td>(</td>
<td class="paramtype"> <em>self</em>, </td>
<td class="paramname"></td>
</tr><tr>
<td class="memname"></td>
<td></td>
<td class="paramtype"><a href="../kdecore/KJob.html#Unit">KJob.Unit</a> </td>
<td class="paramname"><em>unit</em></td>
</tr>
<tr>
<td></td>
<td>)</td>
<td></td>
<td></td>
<td width="100%"> </td>
</tr></table>
</div>
<div class="memdoc"><p>Regularly emitted to show the progress of this job by giving the current amount.
The unit of this amount is sent too. It can be emitted several times if the job
manages several different units.
</p>
<p>
This is a private signal, it can't be emitted directly by subclasses of
KJob, use setProcessedAmount() instead.
</p>
<p>
</p><dl compact><dt><b>Parameters:</b></dt><dd>
<table border="0" cellspacing="2" cellpadding="0">
<tr><td></td><td valign="top"><em>job</em> </td><td> the job that emitted this signal
<tr><td></td><td valign="top"><em>unit</em> </td><td> the unit of the processed amount
<tr><td></td><td valign="top"><em>amount</em> </td><td> the processed amount
</td></tr>
</table></dl>
<p>
</p></div></div><a class="anchor" name="resume"></a>
<div class="memitem">
<div class="memproto">
<table class="memname"><tr>
<td class="memname">bool resume</td>
<td>(</td>
<td class="paramtype"> </td>
<td class="paramname"><em>self</em> )</td>
<td width="100%"> </td>
</tr>
</table>
</div>
<div class="memdoc"><p>Resumes this job.
</p>
<p>
<dl class="return" compact><dt><b>Returns:</b></dt><dd> true if the operation is supported and succeeded, false otherwise
</dd></dl>
</p></div></div><a class="anchor" name="setAutoDelete"></a>
<div class="memitem">
<div class="memproto">
<table class="memname"><tr>
<td class="memname"> setAutoDelete</td>
<td>(</td>
<td class="paramtype"> <em>self</em>, </td>
<td class="paramname"></td>
</tr><tr>
<td class="memname"></td>
<td></td>
<td class="paramtype">bool </td>
<td class="paramname"><em>autodelete</em></td>
</tr>
<tr>
<td></td>
<td>)</td>
<td></td>
<td></td>
<td width="100%"> </td>
</tr></table>
</div>
<div class="memdoc"><p>set the auto-delete property of the job. If <b>autodelete</b> is
set to false the job will not delete itself once it is finished.
</p>
<p>
The default for any KJob is to automatically delete itself.
</p>
<p>
</p><dl compact><dt><b>Parameters:</b></dt><dd>
<table border="0" cellspacing="2" cellpadding="0">
<tr><td></td><td valign="top"><em>autodelete</em> </td><td> set to false to disable automatic deletion
of the job.
</td></tr>
</table></dl>
<p>
</p></div></div><a class="anchor" name="setCapabilities"></a>
<div class="memitem">
<div class="memproto">
<table class="memname"><tr>
<td class="memname"> setCapabilities</td>
<td>(</td>
<td class="paramtype"> <em>self</em>, </td>
<td class="paramname"></td>
</tr><tr>
<td class="memname"></td>
<td></td>
<td class="paramtype"><a href="../kdecore/KJob.html">KJob.Capabilities</a> </td>
<td class="paramname"><em>capabilities</em></td>
</tr>
<tr>
<td></td>
<td>)</td>
<td></td>
<td></td>
<td width="100%"> </td>
</tr></table>
</div>
<div class="memdoc"><p>Sets the capabilities for this job.
</p>
<p>
</p><dl compact><dt><b>Parameters:</b></dt><dd>
<table border="0" cellspacing="2" cellpadding="0">
<tr><td></td><td valign="top"><em>capabilities</em> </td><td> are the capabilities supported by this job
</td></tr> </table></dl>
<p> <dl class="see" compact><dt><b>See also:</b></dt><dd> capabilities()
</dd></dl>
</p></div></div><a class="anchor" name="setError"></a>
<div class="memitem">
<div class="memproto">
<table class="memname"><tr>
<td class="memname"> setError</td>
<td>(</td>
<td class="paramtype"> <em>self</em>, </td>
<td class="paramname"></td>
</tr><tr>
<td class="memname"></td>
<td></td>
<td class="paramtype">int </td>
<td class="paramname"><em>errorCode</em></td>
</tr>
<tr>
<td></td>
<td>)</td>
<td></td>
<td></td>
<td width="100%"> </td>
</tr></table>
</div>
<div class="memdoc"><p>Sets the error code.
</p>
<p>
It should be called when an error
is encountered in the job, just before calling emitResult().
</p>
<p>
You should define an (anonymous) enum of error codes,
with values starting at KJob.UserDefinedError, and use
those. For example,
<pre class="fragment">
enum {
InvalidFoo = UserDefinedError,
BarNotFound
};
</pre>
</p>
<p>
</p><dl compact><dt><b>Parameters:</b></dt><dd>
<table border="0" cellspacing="2" cellpadding="0">
<tr><td></td><td valign="top"><em>errorCode</em> </td><td> the error code
</td></tr> </table></dl>
<p> <dl class="see" compact><dt><b>See also:</b></dt><dd> emitResult()
</dd></dl>
</p></div></div><a class="anchor" name="setErrorText"></a>
<div class="memitem">
<div class="memproto">
<table class="memname"><tr>
<td class="memname"> setErrorText</td>
<td>(</td>
<td class="paramtype"> <em>self</em>, </td>
<td class="paramname"></td>
</tr><tr>
<td class="memname"></td>
<td></td>
<td class="paramtype">QString </td>
<td class="paramname"><em>errorText</em></td>
</tr>
<tr>
<td></td>
<td>)</td>
<td></td>
<td></td>
<td width="100%"> </td>
</tr></table>
</div>
<div class="memdoc"><p>Sets the error text.
</p>
<p>
It should be called when an error
is encountered in the job, just before calling emitResult().
</p>
<p>
Provides extra information about the error that cannot be
determined directly from the error code. For example, a
URL or filename. This string is not normally translatable.
</p>
<p>
</p><dl compact><dt><b>Parameters:</b></dt><dd>
<table border="0" cellspacing="2" cellpadding="0">
<tr><td></td><td valign="top"><em>errorText</em> </td><td> the error text
</td></tr> </table></dl>
<p> <dl class="see" compact><dt><b>See also:</b></dt><dd> emitResult(), errorString(), setError()
</dd></dl>
</p></div></div><a class="anchor" name="setPercent"></a>
<div class="memitem">
<div class="memproto">
<table class="memname"><tr>
<td class="memname"> setPercent</td>
<td>(</td>
<td class="paramtype"> <em>self</em>, </td>
<td class="paramname"></td>
</tr><tr>
<td class="memname"></td>
<td></td>
<td class="paramtype">long </td>
<td class="paramname"><em>percentage</em></td>
</tr>
<tr>
<td></td>
<td>)</td>
<td></td>
<td></td>
<td width="100%"> </td>
</tr></table>
</div>
<div class="memdoc"><p>Sets the overall progress of the job. The percent() signal
is emitted if the value changed.
</p>
<p>
</p><dl compact><dt><b>Parameters:</b></dt><dd>
<table border="0" cellspacing="2" cellpadding="0">
<tr><td></td><td valign="top"><em>percentage</em> </td><td> the new overall progress
</td></tr>
</table></dl>
<p>
</p></div></div><a class="anchor" name="setProcessedAmount"></a>
<div class="memitem">
<div class="memproto">
<table class="memname"><tr>
<td class="memname"> setProcessedAmount</td>
<td>(</td>
<td class="paramtype"> <em>self</em>, </td>
<td class="paramname"></td>
</tr><tr>
<td class="memname"></td>
<td></td>
<td class="paramtype"><a href="../kdecore/KJob.html#Unit">KJob.Unit</a> </td>
<td class="paramname"><em>unit</em>, </td>
</tr>
<tr>
<td class="memname"></td>
<td></td>
<td class="paramtype">long </td>
<td class="paramname"><em>amount</em></td>
</tr>
<tr>
<td></td>
<td>)</td>
<td></td>
<td></td>
<td width="100%"> </td>
</tr></table>
</div>
<div class="memdoc"><p>Sets the processed size. The processedAmount() and percent() signals
are emitted if the values changed. The percent() signal is emitted
only for the progress unit.
</p>
<p>
</p><dl compact><dt><b>Parameters:</b></dt><dd>
<table border="0" cellspacing="2" cellpadding="0">
<tr><td></td><td valign="top"><em>unit</em> </td><td> the unit of the new processed amount
<tr><td></td><td valign="top"><em>amount</em> </td><td> the new processed amount
</td></tr>
</table></dl>
<p>
</p></div></div><a class="anchor" name="setTotalAmount"></a>
<div class="memitem">
<div class="memproto">
<table class="memname"><tr>
<td class="memname"> setTotalAmount</td>
<td>(</td>
<td class="paramtype"> <em>self</em>, </td>
<td class="paramname"></td>
</tr><tr>
<td class="memname"></td>
<td></td>
<td class="paramtype"><a href="../kdecore/KJob.html#Unit">KJob.Unit</a> </td>
<td class="paramname"><em>unit</em>, </td>
</tr>
<tr>
<td class="memname"></td>
<td></td>
<td class="paramtype">long </td>
<td class="paramname"><em>amount</em></td>
</tr>
<tr>
<td></td>
<td>)</td>
<td></td>
<td></td>
<td width="100%"> </td>
</tr></table>
</div>
<div class="memdoc"><p>Sets the total size. The totalSize() and percent() signals
are emitted if the values changed. The percent() signal is emitted
only for the progress unit.
</p>
<p>
</p><dl compact><dt><b>Parameters:</b></dt><dd>
<table border="0" cellspacing="2" cellpadding="0">
<tr><td></td><td valign="top"><em>unit</em> </td><td> the unit of the new total amount
<tr><td></td><td valign="top"><em>amount</em> </td><td> the new total amount
</td></tr>
</table></dl>
<p>
</p></div></div><a class="anchor" name="setUiDelegate"></a>
<div class="memitem">
<div class="memproto">
<table class="memname"><tr>
<td class="memname"> setUiDelegate</td>
<td>(</td>
<td class="paramtype"> <em>self</em>, </td>
<td class="paramname"></td>
</tr><tr>
<td class="memname"></td>
<td></td>
<td class="paramtype"><a href="../kdecore/KJobUiDelegate.html">KJobUiDelegate</a> </td>
<td class="paramname"><em>delegate</em></td>
</tr>
<tr>
<td></td>
<td>)</td>
<td></td>
<td></td>
<td width="100%"> </td>
</tr></table>
</div>
<div class="memdoc"><p>Attach a UI delegate to this job.
</p>
<p>
If the job had another UI delegate, it's automatically deleted. Once
attached to the job, the UI delegate will be deleted with the job.
</p>
<p>
</p><dl compact><dt><b>Parameters:</b></dt><dd>
<table border="0" cellspacing="2" cellpadding="0">
<tr><td></td><td valign="top"><em>delegate</em> </td><td> the new UI delegate to use
</td></tr> </table></dl>
<p> <dl class="see" compact><dt><b>See also:</b></dt><dd> KJobUiDelegate
</dd></dl>
</p></div></div><a class="anchor" name="start"></a>
<div class="memitem">
<div class="memproto">
<table class="memname"><tr>
<td class="memname"> start</td>
<td>(</td>
<td class="paramtype"> </td>
<td class="paramname"><em>self</em> )</td>
<td width="100%"> </td>
</tr>
</table>
</div>
<div class="memdoc"><dl compact><dt><b>Abstract method:</b></dt><dd>This method is abstract and can be overridden but not called directly.</dd></dl><p>Starts the job asynchronously.
</p>
<p>
When the job is finished, result() is emitted.
</p>
<p>
Warning: Never implement any synchronous workload in this method. This method
should just trigger the job startup, not do any work itself. It is expected to
be non-blocking.
</p>
<p>
This is the method all subclasses need to implement.
It should setup and trigger the workload of the job. It should not do any
work itself. This includes all signals and terminating the job, e.g. by
emitResult(). The workload, which could be another method of the
subclass, is to be triggered using the event loop, e.g. by code like:
<pre class="fragment">
void ExampleJob.start()
{
QTimer.singleShot( 0, this, SLOT( doWork() ) );
}
</pre>
</p></div></div><a class="anchor" name="suspend"></a>
<div class="memitem">
<div class="memproto">
<table class="memname"><tr>
<td class="memname">bool suspend</td>
<td>(</td>
<td class="paramtype"> </td>
<td class="paramname"><em>self</em> )</td>
<td width="100%"> </td>
</tr>
</table>
</div>
<div class="memdoc"><p>Suspends this job.
The job should be kept in a state in which it is possible to resume it.
</p>
<p>
<dl class="return" compact><dt><b>Returns:</b></dt><dd> true if the operation is supported and succeeded, false otherwise
</dd></dl>
</p></div></div><a class="anchor" name="totalAmount"></a>
<div class="memitem">
<div class="memproto">
<table class="memname"><tr>
<td class="memname">long totalAmount</td>
<td>(</td>
<td class="paramtype"> <em>self</em>, </td>
<td class="paramname"></td>
</tr><tr>
<td class="memname"></td>
<td></td>
<td class="paramtype"><a href="../kdecore/KJob.html#Unit">KJob.Unit</a> </td>
<td class="paramname"><em>unit</em></td>
</tr>
<tr>
<td></td>
<td>)</td>
<td></td>
<td></td>
<td width="100%"> </td>
</tr></table>
</div>
<div class="memdoc"><p>Emitted when we know the amount the job will have to process. The unit of this
amount is sent too. It can be emitted several times if the job manages several
different units.
</p>
<p>
This is a private signal, it can't be emitted directly by subclasses of
KJob, use setTotalAmount() instead.
</p>
<p>
</p><dl compact><dt><b>Parameters:</b></dt><dd>
<table border="0" cellspacing="2" cellpadding="0">
<tr><td></td><td valign="top"><em>job</em> </td><td> the job that emitted this signal
<tr><td></td><td valign="top"><em>unit</em> </td><td> the unit of the total amount
<tr><td></td><td valign="top"><em>amount</em> </td><td> the total amount
</td></tr>
</table></dl>
<p>
</p></div></div><a class="anchor" name="uiDelegate"></a>
<div class="memitem">
<div class="memproto">
<table class="memname"><tr>
<td class="memname"><a href="../kdecore/KJobUiDelegate.html">KJobUiDelegate</a> uiDelegate</td>
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<div class="memdoc"><p>Retrieves the delegate attached to this job.
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<dl class="return" compact><dt><b>Returns:</b></dt><dd> the delegate attached to this job, or 0 if there's no such delegate
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</p></div></div><hr><h2>Enumeration Documentation</h2><a class="anchor" name="obj224577260"></a>
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<tr><td class="memname">anonymous</td>
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<div class="memdoc"><dl compact><dt><b>Enumerator: </b></dt><dd>
<table border="0" cellspacing="2" cellpadding="0"><tr><td valign="top"><em>NoError</em> </td><td><tr><td valign="top"><em>KilledJobError</em> </td><td><tr><td valign="top"><em>UserDefinedError</em> </td><td></table>
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</div></div><p><a class="anchor" name="Capability"></a>
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<tr><td class="memname">Capability</td>
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<table border="0" cellspacing="2" cellpadding="0"><tr><td valign="top"><em>NoCapabilities</em> = 0x0000</td><td><tr><td valign="top"><em>Killable</em> = 0x0001</td><td><tr><td valign="top"><em>Suspendable</em> = 0x0002</td><td></table>
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<div class="memdoc"><dl compact><dt><b>Enumerator: </b></dt><dd>
<table border="0" cellspacing="2" cellpadding="0"><tr><td valign="top"><em>Quietly</em> </td><td><tr><td valign="top"><em>EmitResult</em> </td><td></table>
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<div class="memdoc"><dl compact><dt><b>Enumerator: </b></dt><dd>
<table border="0" cellspacing="2" cellpadding="0"><tr><td valign="top"><em>Bytes</em> </td><td><tr><td valign="top"><em>Files</em> </td><td><tr><td valign="top"><em>Directories</em> </td><td></table>
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