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KDE 4.4 PyKDE API Reference
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<h1>Context Class Reference</h1>
<code>from PyKDE4.polkitqt import *</code>
<p>
Inherits: <a href="http://www.riverbankcomputing.co.uk/static/Docs/PyQt4/html/qobject.html">QObject</a><br />
Namespace: PolkitQt.Context<br />
<h2>Detailed Description</h2>
<dl class="abstract" compact><dt><b>Abstract class:</b></dt>
<dd>This class can be used as a base class for new classes, but can not be instantiated directly.</dd></dl>
<p>\class Context context.h Context
<dl class="author" compact><dt><b>Author:</b></dt><dd> Daniel Nicoletti <dantti85-pk@yahoo.com.br> </dd></dl>
<dl class="author" compact><dt><b>Author:</b></dt><dd> Dario Freddi <drf54321@gmail.com> </dd></dl>
</p>
<p>
Convenience class for Qt/KDE applications
</p>
<p>
This class is a singleton that provides makes easy the usage
of PolKitContext and PolKitTracker. It emits configChanged()
whenever PolicyKit files change (e.g. the PolicyKit.conf
or .policy files) or when ConsoleKit reports activities changes.
</p>
<p>
<dl class="note" compact><dt><b>Note:</b></dt><dd> This class is a singleton, its constructor is private.
Call Context.instance() to get an instance of the Context object.
Do not delete Context.instance(), cleanup will be done automatically.
</dd></dl>
</p>
<table border="0" cellpadding="0" cellspacing="0"><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="#configChanged">configChanged</a> ()</td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top"> </td><td class="memItemRight" valign="bottom"><a class="el" href="#consoleKitDBChanged">consoleKitDBChanged</a> ()</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="#configChanged">configChanged</a> (self)</td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top"> </td><td class="memItemRight" valign="bottom"><a class="el" href="#consoleKitDBChanged">consoleKitDBChanged</a> (self)</td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top">bool </td><td class="memItemRight" valign="bottom"><a class="el" href="#hasError">hasError</a> (self)</td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top"><a href="http://www.riverbankcomputing.co.uk/static/Docs/PyQt4/html/qstring.html">QString</a> </td><td class="memItemRight" valign="bottom"><a class="el" href="#lastError">lastError</a> (self)</td></tr>
</table>
<hr><h2>Method Documentation</h2><a class="anchor" name="configChanged"></a>
<div class="memitem">
<div class="memproto">
<table class="memname"><tr>
<td class="memname"> configChanged</td>
<td>(</td>
<td class="paramtype"> </td>
<td class="paramname"><em>self</em> )</td>
<td width="100%"> </td>
</tr>
</table>
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<div class="memdoc"><p>This signal will be emitted when a configuration
file gets changed (e.g. /etc/PolicyKit/PolicyKit.conf or
.policy files).
Connect to this signal if you want to track down
actions.
</p>
<p>
<dl class="note" compact><dt><b>Note:</b></dt><dd> If you use Action you'll probably prefer to
use the dataChanged() signal to track Actions changes.
</dd></dl>
</p><dl compact><dt><b>Signal syntax:</b></dt><dd><code>QObject.connect(source, SIGNAL("configChanged()"), target_slot)</code></dd></dl></div></div><a class="anchor" name="consoleKitDBChanged"></a>
<div class="memitem">
<div class="memproto">
<table class="memname"><tr>
<td class="memname"> consoleKitDBChanged</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>This signal is emitted when ConsoleKit configuration
changes. This might happen when a session becomes active
or inactive.
</p>
<p>
If you want to track your actions directly you should
connect to this signal, as this might change the return value
PolicyKit will give you.
</p>
<p>
<dl class="note" compact><dt><b>Note:</b></dt><dd> If you use Action you'll probably prefer to
use the dataChanged() signal to track Action changes.
</dd></dl>
</p><dl compact><dt><b>Signal syntax:</b></dt><dd><code>QObject.connect(source, SIGNAL("consoleKitDBChanged()"), target_slot)</code></dd></dl></div></div><a class="anchor" name="hasError"></a>
<div class="memitem">
<div class="memproto">
<table class="memname"><tr>
<td class="memname">bool hasError</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>You should always call this method first, since if an error is detected,
the library will retry to initialize itself.
</p>
<p>
<dl class="return" compact><dt><b>Returns:</b></dt><dd> true if the library is ready, false if an error occurred
</dd></dl>
</p></div></div><a class="anchor" name="lastError"></a>
<div class="memitem">
<div class="memproto">
<table class="memname"><tr>
<td class="memname"><a href="http://www.riverbankcomputing.co.uk/static/Docs/PyQt4/html/qstring.html">QString</a> lastError</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><dl class="return" compact><dt><b>Returns:</b></dt><dd> the last error message
</dd></dl>
</p></div></div>
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