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<li class="navelem"><a class="el" href="namespaceWt.html">Wt</a> </li>
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<a href="#pro-methods">Protected Member Functions</a> </div>
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<div class="title">Wt::WAbstractProxyModel Class Reference<div class="ingroups"><a class="el" href="group__modelview.html">Model/view system</a></div></div> </div>
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<!-- doxytag: class="Wt::WAbstractProxyModel" --><!-- doxytag: inherits="Wt::WAbstractItemModel" -->
<p>An abstract proxy model for Wt's item models.
<a href="classWt_1_1WAbstractProxyModel.html#details">More...</a></p>
<p><code>#include <Wt/WAbstractProxyModel></code></p>
<div class="dynheader">
Inheritance diagram for Wt::WAbstractProxyModel:</div>
<div class="dyncontent">
<div class="center"><img src="classWt_1_1WAbstractProxyModel__inherit__graph.png" border="0" usemap="#Wt_1_1WAbstractProxyModel_inherit__map" alt="Inheritance graph"/></div>
<map name="Wt_1_1WAbstractProxyModel_inherit__map" id="Wt_1_1WAbstractProxyModel_inherit__map">
<area shape="rect" href="classWt_1_1WAggregateProxyModel.html" title="A proxy model for Wt's item models that provides column aggregation." alt="" coords="596,5,783,32"/><area shape="rect" href="classWt_1_1WBatchEditProxyModel.html" title="A proxy model for Wt's item models that provides batch editing." alt="" coords="597,56,781,83"/><area shape="rect" href="classWt_1_1WReadOnlyProxyModel.html" title="A read-only wrapper for a source model." alt="" coords="597,107,781,133"/><area shape="rect" href="classWt_1_1WSortFilterProxyModel.html" title="A proxy model for Wt's item models that provides filtering and/or sorting." alt="" coords="599,157,780,184"/><area shape="rect" href="classWt_1_1WAbstractItemModel.html" title="An abstract model for use with Wt's view classes." alt="" coords="152,81,320,108"/><area shape="rect" href="classWt_1_1WObject.html" title="A base class for objects that participate in the signal/slot system." alt="" coords="7,81,103,108"/></map>
<center><span class="legend">[<a href="graph_legend.html">legend</a>]</span></center></div>
<p><a href="classWt_1_1WAbstractProxyModel-members.html">List of all members.</a></p>
<table class="memberdecls">
<tr><td colspan="2"><h2><a name="nested-classes"></a>
Classes</h2></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">struct  </td><td class="memItemRight" valign="bottom"><a class="el" href="structWt_1_1WAbstractProxyModel_1_1BaseItem.html">BaseItem</a></td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">A base class for an item modeling a source index parent. <a href="structWt_1_1WAbstractProxyModel_1_1BaseItem.html#details">More...</a><br/></td></tr>
<tr><td colspan="2"><h2><a name="pub-methods"></a>
Public Member Functions</h2></td></tr>
<tr><td class="memItemLeft" align="right" valign="top"><a class="anchor" id="ab59d85e0a005539ead29d3b5e730807c"></a><!-- doxytag: member="Wt::WAbstractProxyModel::WAbstractProxyModel" ref="ab59d85e0a005539ead29d3b5e730807c" args="(WObject *parent=0)" -->
 </td><td class="memItemRight" valign="bottom"><a class="el" href="classWt_1_1WAbstractProxyModel.html#ab59d85e0a005539ead29d3b5e730807c">WAbstractProxyModel</a> (<a class="el" href="classWt_1_1WObject.html">WObject</a> *parent=0)</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Constructor. <br/></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">virtual <a class="el" href="classWt_1_1WModelIndex.html">WModelIndex</a> </td><td class="memItemRight" valign="bottom"><a class="el" href="classWt_1_1WAbstractProxyModel.html#a856d190cc66edcf05462e2476f43b01d">mapFromSource</a> (const <a class="el" href="classWt_1_1WModelIndex.html">WModelIndex</a> &sourceIndex) const =0</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Maps a source model index to the proxy model. <a href="#a856d190cc66edcf05462e2476f43b01d"></a><br/></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">virtual <a class="el" href="classWt_1_1WModelIndex.html">WModelIndex</a> </td><td class="memItemRight" valign="bottom"><a class="el" href="classWt_1_1WAbstractProxyModel.html#ac36b0ee3110073578da8b999d1882bf7">mapToSource</a> (const <a class="el" href="classWt_1_1WModelIndex.html">WModelIndex</a> &proxyIndex) const =0</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Maps a proxy model index to the source model. <a href="#ac36b0ee3110073578da8b999d1882bf7"></a><br/></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">virtual void </td><td class="memItemRight" valign="bottom"><a class="el" href="classWt_1_1WAbstractProxyModel.html#a2e21723dd84569f7e42f118efd7eecce">setSourceModel</a> (<a class="el" href="classWt_1_1WAbstractItemModel.html">WAbstractItemModel</a> *sourceModel)</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Sets the source model. <a href="#a2e21723dd84569f7e42f118efd7eecce"></a><br/></td></tr>
<tr><td class="memItemLeft" align="right" valign="top"><a class="el" href="classWt_1_1WAbstractItemModel.html">WAbstractItemModel</a> * </td><td class="memItemRight" valign="bottom"><a class="el" href="classWt_1_1WAbstractProxyModel.html#a553fbfaa929ade5275a57186eaf7f2bf">sourceModel</a> () const </td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Returns the source model. <a href="#a553fbfaa929ade5275a57186eaf7f2bf"></a><br/></td></tr>
<tr><td colspan="2"><h2><a name="pro-types"></a>
Protected Types</h2></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">typedef std::map< <a class="el" href="classWt_1_1WModelIndex.html">WModelIndex</a>, <br class="typebreak"/>
<a class="el" href="structWt_1_1WAbstractProxyModel_1_1BaseItem.html">BaseItem</a> * > </td><td class="memItemRight" valign="bottom"><a class="el" href="classWt_1_1WAbstractProxyModel.html#a272b9667c732a6d2e11e1b6d5d211697">ItemMap</a></td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">A map for items. <a href="#a272b9667c732a6d2e11e1b6d5d211697"></a><br/></td></tr>
<tr><td colspan="2"><h2><a name="pro-methods"></a>
Protected Member Functions</h2></td></tr>
<tr><td class="memItemLeft" align="right" valign="top"><a class="el" href="classWt_1_1WModelIndex.html">WModelIndex</a> </td><td class="memItemRight" valign="bottom"><a class="el" href="classWt_1_1WAbstractProxyModel.html#a0144ccc35308b2c0fd6a8b018bd6a3e7">createSourceIndex</a> (int row, int column, void *ptr) const </td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Create a source model index. <a href="#a0144ccc35308b2c0fd6a8b018bd6a3e7"></a><br/></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="classWt_1_1WAbstractProxyModel.html#a61c68b0635320c41b78290d10523105a">shiftModelIndexes</a> (const <a class="el" href="classWt_1_1WModelIndex.html">WModelIndex</a> &sourceParent, int start, int count, <a class="el" href="classWt_1_1WAbstractProxyModel.html#a272b9667c732a6d2e11e1b6d5d211697">ItemMap</a> &items)</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Utility methods to shift items in an item map. <a href="#a61c68b0635320c41b78290d10523105a"></a><br/></td></tr>
</table>
<hr/><a name="details" id="details"></a><h2>Detailed Description</h2>
<div class="textblock"><p>An abstract proxy model for Wt's item models. </p>
<p>A proxy model does not store data, but presents data from a source model in another way. It may provide filtering, sorting, or other computed changes to the source model. A proxy model may be a fully functional model, that also allows modification of the underlying model.</p>
<p>This abstract proxy model may be used as a starting point for implementing a custom proxy model, when <a class="el" href="classWt_1_1WSortFilterProxyModel.html" title="A proxy model for Wt's item models that provides filtering and/or sorting.">WSortFilterProxyModel</a> is not adequate. It implements data access and manipulation using the a virtual mapping method (<a class="el" href="classWt_1_1WAbstractProxyModel.html#ac36b0ee3110073578da8b999d1882bf7" title="Maps a proxy model index to the source model.">mapToSource()</a>) to access and manipulate the underlying <a class="el" href="classWt_1_1WAbstractProxyModel.html#a553fbfaa929ade5275a57186eaf7f2bf" title="Returns the source model.">sourceModel()</a>. </p>
</div><hr/><h2>Member Typedef Documentation</h2>
<a class="anchor" id="a272b9667c732a6d2e11e1b6d5d211697"></a><!-- doxytag: member="Wt::WAbstractProxyModel::ItemMap" ref="a272b9667c732a6d2e11e1b6d5d211697" args="" -->
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<td class="memname">typedef std::map<<a class="el" href="classWt_1_1WModelIndex.html">WModelIndex</a>, <a class="el" href="structWt_1_1WAbstractProxyModel_1_1BaseItem.html">BaseItem</a> *> <a class="el" href="classWt_1_1WAbstractProxyModel.html#a272b9667c732a6d2e11e1b6d5d211697">Wt::WAbstractProxyModel::ItemMap</a><code> [protected]</code></td>
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<div class="memdoc">
<p>A map for items. </p>
<dl class="see"><dt><b>See also:</b></dt><dd><a class="el" href="structWt_1_1WAbstractProxyModel_1_1BaseItem.html" title="A base class for an item modeling a source index parent.">BaseItem</a> </dd></dl>
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<hr/><h2>Member Function Documentation</h2>
<a class="anchor" id="a0144ccc35308b2c0fd6a8b018bd6a3e7"></a><!-- doxytag: member="Wt::WAbstractProxyModel::createSourceIndex" ref="a0144ccc35308b2c0fd6a8b018bd6a3e7" args="(int row, int column, void *ptr) const " -->
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<td class="memname"><a class="el" href="classWt_1_1WModelIndex.html">WModelIndex</a> Wt::WAbstractProxyModel::createSourceIndex </td>
<td>(</td>
<td class="paramtype">int </td>
<td class="paramname"><em>row</em>, </td>
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<td class="paramkey"></td>
<td></td>
<td class="paramtype">int </td>
<td class="paramname"><em>column</em>, </td>
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<td class="paramkey"></td>
<td></td>
<td class="paramtype">void * </td>
<td class="paramname"><em>ptr</em> </td>
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<td>)</td>
<td></td><td> const<code> [protected]</code></td>
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<p>Create a source model index. </p>
<p>This is a utility function that allows you to create indexes in the source model. In this way, you can reuse the internal pointers of the source model in proxy model indexes, and convert a proxy model index back to the source model index using this method. </p>
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<a class="anchor" id="a856d190cc66edcf05462e2476f43b01d"></a><!-- doxytag: member="Wt::WAbstractProxyModel::mapFromSource" ref="a856d190cc66edcf05462e2476f43b01d" args="(const WModelIndex &sourceIndex) const =0" -->
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<td class="memname">virtual <a class="el" href="classWt_1_1WModelIndex.html">WModelIndex</a> Wt::WAbstractProxyModel::mapFromSource </td>
<td>(</td>
<td class="paramtype">const <a class="el" href="classWt_1_1WModelIndex.html">WModelIndex</a> & </td>
<td class="paramname"><em>sourceIndex</em></td><td>)</td>
<td> const<code> [pure virtual]</code></td>
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<p>Maps a source model index to the proxy model. </p>
<p>This method returns a model index in the proxy model that corresponds to the model index <code>sourceIndex</code> in the source model. This method must only be implemented for source model indexes that are mapped and thus are the result of <a class="el" href="classWt_1_1WAbstractProxyModel.html#ac36b0ee3110073578da8b999d1882bf7" title="Maps a proxy model index to the source model.">mapToSource()</a>.</p>
<dl class="see"><dt><b>See also:</b></dt><dd><a class="el" href="classWt_1_1WAbstractProxyModel.html#ac36b0ee3110073578da8b999d1882bf7" title="Maps a proxy model index to the source model.">mapToSource()</a> </dd></dl>
<p>Implemented in <a class="el" href="classWt_1_1WAggregateProxyModel.html#abd53119f51f426bbf3e332227a7c140f">Wt::WAggregateProxyModel</a>, <a class="el" href="classWt_1_1WSortFilterProxyModel.html#ab32e734793e3a6e657b3b5655831885e">Wt::WSortFilterProxyModel</a>, <a class="el" href="classWt_1_1WBatchEditProxyModel.html#a8cd40d43e336f2760596fa35659ee6e7">Wt::WBatchEditProxyModel</a>, and <a class="el" href="classWt_1_1WReadOnlyProxyModel.html#a50c17664a8d7a8efe462d9a2c57abb5d">Wt::WReadOnlyProxyModel</a>.</p>
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<a class="anchor" id="ac36b0ee3110073578da8b999d1882bf7"></a><!-- doxytag: member="Wt::WAbstractProxyModel::mapToSource" ref="ac36b0ee3110073578da8b999d1882bf7" args="(const WModelIndex &proxyIndex) const =0" -->
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<td class="memname">virtual <a class="el" href="classWt_1_1WModelIndex.html">WModelIndex</a> Wt::WAbstractProxyModel::mapToSource </td>
<td>(</td>
<td class="paramtype">const <a class="el" href="classWt_1_1WModelIndex.html">WModelIndex</a> & </td>
<td class="paramname"><em>proxyIndex</em></td><td>)</td>
<td> const<code> [pure virtual]</code></td>
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<p>Maps a proxy model index to the source model. </p>
<p>This method returns a model index in the source model that corresponds to the proxy model index <code>proxyIndex</code>.</p>
<dl class="see"><dt><b>See also:</b></dt><dd><a class="el" href="classWt_1_1WAbstractProxyModel.html#a856d190cc66edcf05462e2476f43b01d" title="Maps a source model index to the proxy model.">mapFromSource()</a> </dd></dl>
<p>Implemented in <a class="el" href="classWt_1_1WAggregateProxyModel.html#a219cfab137c4e6b5fcdcfdaa00f2c652">Wt::WAggregateProxyModel</a>, <a class="el" href="classWt_1_1WSortFilterProxyModel.html#a290351f93612a5180c055328e2ff3663">Wt::WSortFilterProxyModel</a>, <a class="el" href="classWt_1_1WBatchEditProxyModel.html#a2dba9cae628236227a85a5f2852fe3c1">Wt::WBatchEditProxyModel</a>, and <a class="el" href="classWt_1_1WReadOnlyProxyModel.html#a8db095c055d60c9eabf912dbf399d1ba">Wt::WReadOnlyProxyModel</a>.</p>
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<a class="anchor" id="a2e21723dd84569f7e42f118efd7eecce"></a><!-- doxytag: member="Wt::WAbstractProxyModel::setSourceModel" ref="a2e21723dd84569f7e42f118efd7eecce" args="(WAbstractItemModel *sourceModel)" -->
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<td class="memname">virtual void Wt::WAbstractProxyModel::setSourceModel </td>
<td>(</td>
<td class="paramtype"><a class="el" href="classWt_1_1WAbstractItemModel.html">WAbstractItemModel</a> * </td>
<td class="paramname"><em>sourceModel</em></td><td>)</td>
<td><code> [virtual]</code></td>
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<p>Sets the source model. </p>
<p>The source model provides the actual data for the proxy model.</p>
<p>Ownership of the source model is <em>not</em> transferred. </p>
<p>Reimplemented in <a class="el" href="classWt_1_1WAggregateProxyModel.html#adcd5632ba87b439d87b2470bf028cf28">Wt::WAggregateProxyModel</a>, <a class="el" href="classWt_1_1WSortFilterProxyModel.html#a805bcc6964e8c0194638c05f30d2a8cb">Wt::WSortFilterProxyModel</a>, and <a class="el" href="classWt_1_1WBatchEditProxyModel.html#a367daece652869f3d62efb45883a50a5">Wt::WBatchEditProxyModel</a>.</p>
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<a class="anchor" id="a61c68b0635320c41b78290d10523105a"></a><!-- doxytag: member="Wt::WAbstractProxyModel::shiftModelIndexes" ref="a61c68b0635320c41b78290d10523105a" args="(const WModelIndex &sourceParent, int start, int count, ItemMap &items)" -->
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<td class="memname">void Wt::WAbstractProxyModel::shiftModelIndexes </td>
<td>(</td>
<td class="paramtype">const <a class="el" href="classWt_1_1WModelIndex.html">WModelIndex</a> & </td>
<td class="paramname"><em>sourceParent</em>, </td>
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<td class="paramkey"></td>
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<td class="paramtype">int </td>
<td class="paramname"><em>start</em>, </td>
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<td class="paramkey"></td>
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<td class="paramtype">int </td>
<td class="paramname"><em>count</em>, </td>
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<td class="paramkey"></td>
<td></td>
<td class="paramtype"><a class="el" href="classWt_1_1WAbstractProxyModel.html#a272b9667c732a6d2e11e1b6d5d211697">ItemMap</a> & </td>
<td class="paramname"><em>items</em> </td>
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<td>)</td>
<td></td><td><code> [protected]</code></td>
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<p>Utility methods to shift items in an item map. </p>
<p>You can use this method to adjust an item map after the source model has inserted or removed rows. When removing rows (count < 0), items may possibly be removed and deleted. </p>
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<a class="anchor" id="a553fbfaa929ade5275a57186eaf7f2bf"></a><!-- doxytag: member="Wt::WAbstractProxyModel::sourceModel" ref="a553fbfaa929ade5275a57186eaf7f2bf" args="() const " -->
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<td class="memname"><a class="el" href="classWt_1_1WAbstractItemModel.html">WAbstractItemModel</a>* Wt::WAbstractProxyModel::sourceModel </td>
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<td class="paramname"></td><td>)</td>
<td> const</td>
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<p>Returns the source model. </p>
<dl class="see"><dt><b>See also:</b></dt><dd><a class="el" href="classWt_1_1WAbstractProxyModel.html#a2e21723dd84569f7e42f118efd7eecce" title="Sets the source model.">setSourceModel()</a> </dd></dl>
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