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        KDE 4.4 PyKDE API Reference
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<h1>EntityTreeViewStateSaver Class Reference</h1>
<code>from PyKDE4.akonadi import *</code>
<p>
Inherits: <a href="http://www.riverbankcomputing.co.uk/static/Docs/PyQt4/html/qobject.html">QObject</a><br />

Namespace: Akonadi.EntityTreeViewStateSaver<br />
<h2>Detailed Description</h2>

<p>A helper class that saves and restores state of an EntityTreeView
</p>
<p>
This class saves and restores the state of a QTreeView showing an EntityTreeModel,
or whatever proxies are stacked on top of one. State so far means the current selection
and expansion of the items and collections.
</p>
<p>
The EntityTreeViewStateSaver is needed because populating the EntityTreeModel
is asynchronous and finding the right point in time to restore the state is a
difficult task that is hidden inside this class.
</p>
<p>
Example:
</p>
<p>
<pre class="fragment">

 class MyWidget : public QWidget
 {
   public:
      MyWidget( QWidget* parent );
      ~MyWidget();

      ...

   private:
     KConfig *mGlobalConfig;
     QTreeView *mTreeView;
     Akonadi.EntityTreeViewStateSaver *mStateSaver;
 };

 MyWidget.MyWidget( QWidget *parent )
   : QWidget( parent )
 {
   mGlobalConfig = ...
   mTreeView = new QTreeView( this );
   ...

   mStateSaver = new Akonadi.EntityTreeViewStateSaver( mTreeView );

   KConfigGroup group( mGlobalConfig, "treeViewState" );
   mStateSaver-&gt;restoreState( group );
 }

 MyWidget.~MyWidget()
 {
   KConfigGroup group( mGlobalConfig, "treeViewState" );
   mStateSaver-&gt;saveState( group );
 }

</pre>
</p>
<p>

<dl class="author" compact><dt><b>Author:</b></dt><dd> Volker Krause &lt;vkrause@kde.org&gt; </dd></dl>
<dl class="since" compact><dt><b>Since:</b></dt><dd> 4.4
</dd></dl>
</p>
<table border="0" cellpadding="0" cellspacing="0"><tr><td colspan="2"><br><h2>Methods</h2></td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top">&nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="#EntityTreeViewStateSaver">__init__</a> (self, <a href="http://www.riverbankcomputing.co.uk/static/Docs/PyQt4/html/qtreeview.html">QTreeView</a> view)</td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top">&nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="#restoreState">restoreState</a> (self, <a href="../kdecore/KConfigGroup.html">KConfigGroup</a> configGroup)</td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top">&nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="#saveState">saveState</a> (self, <a href="../kdecore/KConfigGroup.html">KConfigGroup</a> configGroup)</td></tr>
</table>
<hr><h2>Method Documentation</h2><a class="anchor" name="EntityTreeViewStateSaver"></a>
<div class="memitem">
<div class="memproto">
<table class="memname"><tr>
<td class="memname">__init__</td>
<td>(</td>
<td class="paramtype">&nbsp;<em>self</em>, </td>
<td class="paramname"></td>
</tr><tr>
<td class="memname"></td>
<td></td>
<td class="paramtype"><a href="http://www.riverbankcomputing.co.uk/static/Docs/PyQt4/html/qtreeview.html">QTreeView</a>&nbsp;</td>
<td class="paramname"><em>view</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 state saver, for saving or restoring.
</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>view</em>&nbsp;</td><td> The QTreeView which state should be saved/restored.
</td></tr>
</table></dl>
<p>
</p></div></div><a class="anchor" name="restoreState"></a>
<div class="memitem">
<div class="memproto">
<table class="memname"><tr>
<td class="memname"> restoreState</td>
<td>(</td>
<td class="paramtype">&nbsp;<em>self</em>, </td>
<td class="paramname"></td>
</tr><tr>
<td class="memname"></td>
<td></td>
<td class="paramtype"><a href="../kdecore/KConfigGroup.html">KConfigGroup</a>&nbsp;</td>
<td class="paramname"><em>configGroup</em></td>
</tr>
<tr>
<td></td>
<td>)</td>
<td></td>
<td></td>
<td width="100%"> </td>
</tr></table>
</div>
<div class="memdoc"><p>Restore the state stored in <b>configGroup</b> as soon as the corresponding entities
become available in the model (the model is populated asynchronously, which is the
main reason why you want to use this class).
</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>configGroup</em>&nbsp;</td><td> Config file group containing a previously stored EntityTreeView state.
</td></tr>
</table></dl>
<p>
</p></div></div><a class="anchor" name="saveState"></a>
<div class="memitem">
<div class="memproto">
<table class="memname"><tr>
<td class="memname"> saveState</td>
<td>(</td>
<td class="paramtype">&nbsp;<em>self</em>, </td>
<td class="paramname"></td>
</tr><tr>
<td class="memname"></td>
<td></td>
<td class="paramtype"><a href="../kdecore/KConfigGroup.html">KConfigGroup</a>&nbsp;</td>
<td class="paramname"><em>configGroup</em></td>
</tr>
<tr>
<td></td>
<td>)</td>
<td></td>
<td></td>
<td width="100%"> </td>
</tr></table>
</div>
<div class="memdoc"><p>Stores the current state in the given config group.
</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>configGroup</em>&nbsp;</td><td> Config file group into which the state is supposed to be stored.
</td></tr>
</table></dl>
<p>
</p></div></div>
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