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<li class="navelem"><a class="el" href="namespaceWt.html">Wt</a> </li>
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<a href="#pub-methods">Public Member Functions</a> |
<a href="#pro-methods">Protected Member Functions</a> </div>
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<div class="title">Wt::WItemDelegate 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::WItemDelegate" --><!-- doxytag: inherits="Wt::WAbstractItemDelegate" -->
<p>Standard delegate class for rendering a view item.
<a href="classWt_1_1WItemDelegate.html#details">More...</a></p>
<p><code>#include <Wt/WItemDelegate></code></p>
<div class="dynheader">
Inheritance diagram for Wt::WItemDelegate:</div>
<div class="dyncontent">
<div class="center"><img src="classWt_1_1WItemDelegate__inherit__graph.png" border="0" usemap="#Wt_1_1WItemDelegate_inherit__map" alt="Inheritance graph"/></div>
<map name="Wt_1_1WItemDelegate_inherit__map" id="Wt_1_1WItemDelegate_inherit__map">
<area shape="rect" href="classWt_1_1WAbstractItemDelegate.html" title="Abstract delegate class for rendering an item in an item view." alt="" coords="5,80,189,107"/><area shape="rect" href="classWt_1_1WObject.html" title="A base class for objects that participate in the signal/slot system." alt="" coords="49,5,145,32"/></map>
<center><span class="legend">[<a href="graph_legend.html">legend</a>]</span></center></div>
<p><a href="classWt_1_1WItemDelegate-members.html">List of all members.</a></p>
<table class="memberdecls">
<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="ac016d3abb5a129df3a4a690fa9094bd0"></a><!-- doxytag: member="Wt::WItemDelegate::WItemDelegate" ref="ac016d3abb5a129df3a4a690fa9094bd0" args="(WObject *parent=0)" -->
 </td><td class="memItemRight" valign="bottom"><a class="el" href="classWt_1_1WItemDelegate.html#ac016d3abb5a129df3a4a690fa9094bd0">WItemDelegate</a> (<a class="el" href="classWt_1_1WObject.html">WObject</a> *parent=0)</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Create an item delegate. <br/></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">virtual <a class="el" href="classWt_1_1WWidget.html">WWidget</a> * </td><td class="memItemRight" valign="bottom"><a class="el" href="classWt_1_1WItemDelegate.html#a2cbc2240449a1000650f3c3b5e64bc8f">update</a> (<a class="el" href="classWt_1_1WWidget.html">WWidget</a> *widget, const <a class="el" href="classWt_1_1WModelIndex.html">WModelIndex</a> &index, WFlags< <a class="el" href="namespaceWt.html#a8df2183a957c453839f3382e3db167d6">ViewItemRenderFlag</a> > flags)</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Creates or updates a widget that renders an item. <a href="#a2cbc2240449a1000650f3c3b5e64bc8f"></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_1WItemDelegate.html#a8d97be988b846205f61b646c3a424040">updateModelIndex</a> (<a class="el" href="classWt_1_1WWidget.html">WWidget</a> *widget, const <a class="el" href="classWt_1_1WModelIndex.html">WModelIndex</a> &index)</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Updates the model index of a widget. <a href="#a8d97be988b846205f61b646c3a424040"></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_1WItemDelegate.html#ad886d265dc00b95d9fb90c022a6322f9">setTextFormat</a> (const <a class="el" href="classWt_1_1WString.html">WString</a> &format)</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Sets the text format string. <a href="#ad886d265dc00b95d9fb90c022a6322f9"></a><br/></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">const <a class="el" href="classWt_1_1WString.html">WString</a> & </td><td class="memItemRight" valign="bottom"><a class="el" href="classWt_1_1WItemDelegate.html#a378af3d59a2765edca259cd2fb75dc90">textFormat</a> () const </td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Returns the text format string. <a href="#a378af3d59a2765edca259cd2fb75dc90"></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_1WItemDelegate.html#a7f5f6ee8d506749f9e16463c5502f0f2">setModelData</a> (const boost::any &editState, <a class="el" href="classWt_1_1WAbstractItemModel.html">WAbstractItemModel</a> *model, const <a class="el" href="classWt_1_1WModelIndex.html">WModelIndex</a> &index) const </td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Saves the edited data to the model. <a href="#a7f5f6ee8d506749f9e16463c5502f0f2"></a><br/></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">virtual boost::any </td><td class="memItemRight" valign="bottom"><a class="el" href="classWt_1_1WItemDelegate.html#a4efa5822211a5791df55d2d464a5cd4e">editState</a> (<a class="el" href="classWt_1_1WWidget.html">WWidget</a> *editor) const </td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Returns the current edit state. <a href="#a4efa5822211a5791df55d2d464a5cd4e"></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_1WItemDelegate.html#afacb5ea1866c2212ad3cf0a616c78857">setEditState</a> (<a class="el" href="classWt_1_1WWidget.html">WWidget</a> *editor, const boost::any &value) const </td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Sets the editor data from the editor state. <a href="#afacb5ea1866c2212ad3cf0a616c78857"></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">virtual <a class="el" href="classWt_1_1WWidget.html">WWidget</a> * </td><td class="memItemRight" valign="bottom"><a class="el" href="classWt_1_1WItemDelegate.html#a832398b35176a47de56dce8fc89e58dd">createEditor</a> (const <a class="el" href="classWt_1_1WModelIndex.html">WModelIndex</a> &index, WFlags< <a class="el" href="namespaceWt.html#a8df2183a957c453839f3382e3db167d6">ViewItemRenderFlag</a> > flags) const </td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Creates an editor for a data item. <a href="#a832398b35176a47de56dce8fc89e58dd"></a><br/></td></tr>
</table>
<hr/><a name="details" id="details"></a><h2>Detailed Description</h2>
<div class="textblock"><p>Standard delegate class for rendering a view item. </p>
<p>This class provides the standard implementation for rendering an item (as in a <a class="el" href="classWt_1_1WAbstractItemView.html" title="An abstract base class for item Views.">WAbstractItemView</a>), and renders data provided by the standard data roles (see ItemDataRole). It also provides default editing support using a line edit.</p>
<p>You may provide special editing support for an item by specializing the widget and reimplement <a class="el" href="classWt_1_1WItemDelegate.html#a832398b35176a47de56dce8fc89e58dd" title="Creates an editor for a data item.">createEditor()</a>, <a class="el" href="classWt_1_1WItemDelegate.html#a7f5f6ee8d506749f9e16463c5502f0f2" title="Saves the edited data to the model.">setModelData()</a>, <a class="el" href="classWt_1_1WItemDelegate.html#a4efa5822211a5791df55d2d464a5cd4e" title="Returns the current edit state.">editState()</a>, and <a class="el" href="classWt_1_1WItemDelegate.html#afacb5ea1866c2212ad3cf0a616c78857" title="Sets the editor data from the editor state.">setEditState()</a>. </p>
</div><hr/><h2>Member Function Documentation</h2>
<a class="anchor" id="a832398b35176a47de56dce8fc89e58dd"></a><!-- doxytag: member="Wt::WItemDelegate::createEditor" ref="a832398b35176a47de56dce8fc89e58dd" args="(const WModelIndex &index, WFlags< ViewItemRenderFlag > flags) const " -->
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<td class="memname"><a class="el" href="classWt_1_1WWidget.html">WWidget</a> * Wt::WItemDelegate::createEditor </td>
<td>(</td>
<td class="paramtype">const <a class="el" href="classWt_1_1WModelIndex.html">WModelIndex</a> & </td>
<td class="paramname"><em>index</em>, </td>
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<td class="paramkey"></td>
<td></td>
<td class="paramtype">WFlags< <a class="el" href="namespaceWt.html#a8df2183a957c453839f3382e3db167d6">ViewItemRenderFlag</a> > </td>
<td class="paramname"><em>flags</em> </td>
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<td></td>
<td>)</td>
<td></td><td> const<code> [protected, virtual]</code></td>
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<p>Creates an editor for a data item. </p>
<p>The default implementation returns a <a class="el" href="classWt_1_1WLineEdit.html" title="A widget that provides a single line edit.">WLineEdit</a> which edits the item's <a class="el" href="group__modelview.html#gga0ae864e12320f9f89172735e075ed068a6bc0da3ea683a06ee293a5a15f903cde" title="Role for the edited value.">Wt::EditRole</a> value.</p>
<p>You may reimplement this method to provide a suitable editor, or to attach a custom validator. In that case, you will probably also want to reimplement <a class="el" href="classWt_1_1WItemDelegate.html#a4efa5822211a5791df55d2d464a5cd4e" title="Returns the current edit state.">editState()</a>, <a class="el" href="classWt_1_1WItemDelegate.html#afacb5ea1866c2212ad3cf0a616c78857" title="Sets the editor data from the editor state.">setEditState()</a>, and <a class="el" href="classWt_1_1WItemDelegate.html#a7f5f6ee8d506749f9e16463c5502f0f2" title="Saves the edited data to the model.">setModelData()</a>.</p>
<p>The editor should not keep a reference to the model index (it does not need to since <a class="el" href="classWt_1_1WItemDelegate.html#a7f5f6ee8d506749f9e16463c5502f0f2" title="Saves the edited data to the model.">setModelData()</a> will provide the proper model index to save the data to the model). Otherwise, because model indexes may shift because of row or column insertions, you should reimplement <a class="el" href="classWt_1_1WItemDelegate.html#a8d97be988b846205f61b646c3a424040" title="Updates the model index of a widget.">updateModelIndex()</a>.</p>
<p>As an example of how to provide a specialized editor, consider the default implementation, which returns a <a class="el" href="classWt_1_1WLineEdit.html" title="A widget that provides a single line edit.">WLineEdit</a>: </p>
<div class="fragment"><pre class="fragment"> <a class="code" href="classWt_1_1WWidget.html" title="The abstract base class for a user-interface component.">Wt::WWidget</a> *<a class="code" href="classWt_1_1WItemDelegate.html#a832398b35176a47de56dce8fc89e58dd" title="Creates an editor for a data item.">WItemDelegate::createEditor</a>(<span class="keyword">const</span> <a class="code" href="classWt_1_1WModelIndex.html" title="A value class that describes an index to an item in a data model.">Wt::WModelIndex</a>& index, WFlags<ViewItemRenderFlag> flags)<span class="keyword"> const</span>
<span class="keyword"> </span>{
<a class="code" href="classWt_1_1WContainerWidget.html" title="A widget that holds and manages child widgets.">Wt::WContainerWidget</a> *result = <span class="keyword">new</span> <a class="code" href="classWt_1_1WContainerWidget.html" title="A widget that holds and manages child widgets.">Wt::WContainerWidget</a>();
result-><a class="code" href="classWt_1_1WWebWidget.html#a270f7d4bec189c88842b47090ccb448c" title="Sets as selectable.">setSelectable</a>(<span class="keyword">true</span>);
<a class="code" href="classWt_1_1WLineEdit.html" title="A widget that provides a single line edit.">Wt::WLineEdit</a> *lineEdit = <span class="keyword">new</span> <a class="code" href="classWt_1_1WLineEdit.html" title="A widget that provides a single line edit.">Wt::WLineEdit</a>();
lineEdit-><a class="code" href="classWt_1_1WLineEdit.html#addb99c6ab5483836adf44a2706a410af" title="Sets the content of the line edit.">setText</a>(<a class="code" href="group__modelview.html#ga57b5cadd177847f51eaeb0cee23782c1" title="Interprets a boost::any as a string value.">asString</a>(index.<a class="code" href="classWt_1_1WModelIndex.html#a7f05920329ca4b7fdbb10931afdb634e" title="Returns data in the model at this index.">data</a>(<a class="code" href="group__modelview.html#gga0ae864e12320f9f89172735e075ed068a6bc0da3ea683a06ee293a5a15f903cde" title="Role for the edited value.">EditRole</a>), textFormat_));
lineEdit-><a class="code" href="classWt_1_1WInteractWidget.html#a38f06d1ad95e7599b055f49931236c10" title="Event signal emitted when enter was pressed.">enterPressed</a>().connect(boost::bind(&WItemDelegate::doCloseEditor, <span class="keyword">this</span>, result, <span class="keyword">true</span>));
lineEdit-><a class="code" href="classWt_1_1WInteractWidget.html#ab581bba7f0ce02380e9339198bac2f78" title="Event signal emitted when escape was pressed.">escapePressed</a>().connect(boost::bind(&WItemDelegate::doCloseEditor, <span class="keyword">this</span>, result, <span class="keyword">false</span>));
<span class="keywordflow">if</span> (flags & <a class="code" href="namespaceWt.html#a8df2183a957c453839f3382e3db167d6ab33ff2e9b3f5374810e9875eb2e61f59" title="Render (the editor) focused">RenderFocused</a>)
lineEdit-><a class="code" href="classWt_1_1WFormWidget.html#afe33f5c3658ddbd08fec9f6c203c578b" title="Gives focus.">setFocus</a>();
<span class="comment">// We use a layout so that the line edit fills the entire cell.</span>
result-><a class="code" href="classWt_1_1WContainerWidget.html#a1c84e0ffe330d4798f0ce217f75be08c" title="Sets a layout manager for the container.">setLayout</a>(<span class="keyword">new</span> WHBoxLayout());
result-><a class="code" href="classWt_1_1WContainerWidget.html#afaba82a27836f4a82bab48e8b26ccca2" title="Returns the layout manager that was set for the container.">layout</a>()->setContentsMargins(1, 1, 1, 1);
result-><a class="code" href="classWt_1_1WContainerWidget.html#afaba82a27836f4a82bab48e8b26ccca2" title="Returns the layout manager that was set for the container.">layout</a>()->addWidget(lineEdit);
<span class="keywordflow">return</span> result;
}
<span class="keywordtype">void</span> WItemDelegate::doCloseEditor(<a class="code" href="classWt_1_1WWidget.html" title="The abstract base class for a user-interface component.">Wt::WWidget</a> *editor, <span class="keywordtype">bool</span> save)<span class="keyword"> const</span>
<span class="keyword"> </span>{
<a class="code" href="classWt_1_1WAbstractItemDelegate.html#a02e957cf6c1f1e9a98c6de7dbe33ff07" title="Signal which indicates that an editor needs to be closed.">closeEditor</a>().emit(editor, save);
}
</pre></div>
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<a class="anchor" id="a4efa5822211a5791df55d2d464a5cd4e"></a><!-- doxytag: member="Wt::WItemDelegate::editState" ref="a4efa5822211a5791df55d2d464a5cd4e" args="(WWidget *editor) const " -->
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<td class="memname">boost::any Wt::WItemDelegate::editState </td>
<td>(</td>
<td class="paramtype"><a class="el" href="classWt_1_1WWidget.html">WWidget</a> * </td>
<td class="paramname"><em>editor</em></td><td>)</td>
<td> const<code> [virtual]</code></td>
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<p>Returns the current edit state. </p>
<p>The default implementation returns the current text in the line edit. You will need to reimplement this method for a custom editor.</p>
<p>As an example of how to deal with a specialized editor, consider the default implementation: </p>
<div class="fragment"><pre class="fragment"> boost::any <a class="code" href="classWt_1_1WItemDelegate.html#a4efa5822211a5791df55d2d464a5cd4e" title="Returns the current edit state.">WItemDelegate::editState</a>(<a class="code" href="classWt_1_1WWidget.html" title="The abstract base class for a user-interface component.">Wt::WWidget</a> *editor)<span class="keyword"> const</span>
<span class="keyword"> </span>{
<a class="code" href="classWt_1_1WContainerWidget.html" title="A widget that holds and manages child widgets.">Wt::WContainerWidget</a> *w = <span class="keyword">dynamic_cast<</span><a class="code" href="classWt_1_1WContainerWidget.html" title="A widget that holds and manages child widgets.">Wt::WContainerWidget</a> *<span class="keyword">></span>(editor);
<a class="code" href="classWt_1_1WLineEdit.html" title="A widget that provides a single line edit.">Wt::WLineEdit</a> *lineEdit = <span class="keyword">dynamic_cast<</span><a class="code" href="classWt_1_1WLineEdit.html" title="A widget that provides a single line edit.">Wt::WLineEdit</a> *<span class="keyword">></span>(w-><a class="code" href="classWt_1_1WContainerWidget.html#a53c79a7311ffe3c132b50bdbb830856d" title="Returns the widget at index">widget</a>(0));
<span class="keywordflow">return</span> boost::any(lineEdit-><a class="code" href="classWt_1_1WLineEdit.html#ac74b58779cb635898cac13e81d8b0c7a" title="Returns the current content.">text</a>());
}
</pre></div><dl class="see"><dt><b>See also:</b></dt><dd><a class="el" href="classWt_1_1WItemDelegate.html#a832398b35176a47de56dce8fc89e58dd" title="Creates an editor for a data item.">createEditor()</a>, <a class="el" href="classWt_1_1WItemDelegate.html#afacb5ea1866c2212ad3cf0a616c78857" title="Sets the editor data from the editor state.">setEditState()</a>, <a class="el" href="classWt_1_1WItemDelegate.html#a7f5f6ee8d506749f9e16463c5502f0f2" title="Saves the edited data to the model.">setModelData()</a> </dd></dl>
<p>Reimplemented from <a class="el" href="classWt_1_1WAbstractItemDelegate.html#aa54d70f669bd6cb7b8f90dca1f2c8c82">Wt::WAbstractItemDelegate</a>.</p>
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<a class="anchor" id="afacb5ea1866c2212ad3cf0a616c78857"></a><!-- doxytag: member="Wt::WItemDelegate::setEditState" ref="afacb5ea1866c2212ad3cf0a616c78857" args="(WWidget *editor, const boost::any &value) const " -->
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<td class="memname">void Wt::WItemDelegate::setEditState </td>
<td>(</td>
<td class="paramtype"><a class="el" href="classWt_1_1WWidget.html">WWidget</a> * </td>
<td class="paramname"><em>editor</em>, </td>
</tr>
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<td class="paramkey"></td>
<td></td>
<td class="paramtype">const boost::any & </td>
<td class="paramname"><em>value</em> </td>
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<td></td>
<td>)</td>
<td></td><td> const<code> [virtual]</code></td>
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<p>Sets the editor data from the editor state. </p>
<p>The default implementation resets the text in the line edit. You will need to reimplement this method if for a custom editor.</p>
<p>As an example of how to deal with a specialized editor, consider the default implementation: </p>
<div class="fragment"><pre class="fragment"> <span class="keywordtype">void</span> <a class="code" href="classWt_1_1WItemDelegate.html#afacb5ea1866c2212ad3cf0a616c78857" title="Sets the editor data from the editor state.">WItemDelegate::setEditState</a>(<a class="code" href="classWt_1_1WWidget.html" title="The abstract base class for a user-interface component.">Wt::WWidget</a> *editor, <span class="keyword">const</span> boost::any& value)<span class="keyword"> const</span>
<span class="keyword"> </span>{
<a class="code" href="classWt_1_1WContainerWidget.html" title="A widget that holds and manages child widgets.">Wt::WContainerWidget</a> *w = <span class="keyword">dynamic_cast<</span><a class="code" href="classWt_1_1WContainerWidget.html" title="A widget that holds and manages child widgets.">Wt::WContainerWidget</a> *<span class="keyword">></span>(editor);
<a class="code" href="classWt_1_1WLineEdit.html" title="A widget that provides a single line edit.">Wt::WLineEdit</a> *lineEdit = <span class="keyword">dynamic_cast<</span><a class="code" href="classWt_1_1WLineEdit.html" title="A widget that provides a single line edit.">Wt::WLineEdit</a> *<span class="keyword">></span>(w-><a class="code" href="classWt_1_1WContainerWidget.html#a53c79a7311ffe3c132b50bdbb830856d" title="Returns the widget at index">widget</a>(0));
lineEdit-><a class="code" href="classWt_1_1WLineEdit.html#addb99c6ab5483836adf44a2706a410af" title="Sets the content of the line edit.">setText</a>(boost::any_cast<Wt::WString>(value));
}
</pre></div><dl class="see"><dt><b>See also:</b></dt><dd><a class="el" href="classWt_1_1WItemDelegate.html#a832398b35176a47de56dce8fc89e58dd" title="Creates an editor for a data item.">createEditor()</a> </dd></dl>
<p>Reimplemented from <a class="el" href="classWt_1_1WAbstractItemDelegate.html#aeb49d13eed388ceed70943b5c6d4cd05">Wt::WAbstractItemDelegate</a>.</p>
</div>
</div>
<a class="anchor" id="a7f5f6ee8d506749f9e16463c5502f0f2"></a><!-- doxytag: member="Wt::WItemDelegate::setModelData" ref="a7f5f6ee8d506749f9e16463c5502f0f2" args="(const boost::any &editState, WAbstractItemModel *model, const WModelIndex &index) const " -->
<div class="memitem">
<div class="memproto">
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<td class="memname">void Wt::WItemDelegate::setModelData </td>
<td>(</td>
<td class="paramtype">const boost::any & </td>
<td class="paramname"><em>editState</em>, </td>
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<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype"><a class="el" href="classWt_1_1WAbstractItemModel.html">WAbstractItemModel</a> * </td>
<td class="paramname"><em>model</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype">const <a class="el" href="classWt_1_1WModelIndex.html">WModelIndex</a> & </td>
<td class="paramname"><em>index</em> </td>
</tr>
<tr>
<td></td>
<td>)</td>
<td></td><td> const<code> [virtual]</code></td>
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<div class="memdoc">
<p>Saves the edited data to the model. </p>
<p>The default implementation saves the current edit value to the model. You will need to reimplement this method for a custom editor.</p>
<p>As an example of how to deal with a specialized editor, consider the default implementation: </p>
<div class="fragment"><pre class="fragment"> <span class="keywordtype">void</span> <a class="code" href="classWt_1_1WItemDelegate.html#a7f5f6ee8d506749f9e16463c5502f0f2" title="Saves the edited data to the model.">WItemDelegate::setModelData</a>(<span class="keyword">const</span> boost::any& <a class="code" href="classWt_1_1WItemDelegate.html#a4efa5822211a5791df55d2d464a5cd4e" title="Returns the current edit state.">editState</a>,
<a class="code" href="classWt_1_1WAbstractItemModel.html" title="An abstract model for use with Wt's view classes.">Wt::WAbstractItemModel</a> *model,
<span class="keyword">const</span> <a class="code" href="classWt_1_1WModelIndex.html" title="A value class that describes an index to an item in a data model.">Wt::WModelIndex</a>& index)<span class="keyword"> const</span>
<span class="keyword"> </span>{
model-><a class="code" href="classWt_1_1WAbstractItemModel.html#a70856db8c322be8c7f397a932165a943" title="Sets data at the given model index.">setData</a>(index, editState, <a class="code" href="group__modelview.html#gga0ae864e12320f9f89172735e075ed068a6bc0da3ea683a06ee293a5a15f903cde" title="Role for the edited value.">EditRole</a>);
}
</pre></div><dl class="see"><dt><b>See also:</b></dt><dd><a class="el" href="classWt_1_1WItemDelegate.html#a832398b35176a47de56dce8fc89e58dd" title="Creates an editor for a data item.">createEditor()</a>, <a class="el" href="classWt_1_1WItemDelegate.html#a4efa5822211a5791df55d2d464a5cd4e" title="Returns the current edit state.">editState()</a> </dd></dl>
<p>Reimplemented from <a class="el" href="classWt_1_1WAbstractItemDelegate.html#a2b4b7bc9c3782190b5b0f91f0cf83c18">Wt::WAbstractItemDelegate</a>.</p>
</div>
</div>
<a class="anchor" id="ad886d265dc00b95d9fb90c022a6322f9"></a><!-- doxytag: member="Wt::WItemDelegate::setTextFormat" ref="ad886d265dc00b95d9fb90c022a6322f9" args="(const WString &format)" -->
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<td class="memname">void Wt::WItemDelegate::setTextFormat </td>
<td>(</td>
<td class="paramtype">const <a class="el" href="classWt_1_1WString.html">WString</a> & </td>
<td class="paramname"><em>format</em></td><td>)</td>
<td></td>
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</table>
</div>
<div class="memdoc">
<p>Sets the text format string. </p>
<p>The DisplayRole data is converted to a string using <a class="el" href="group__modelview.html#ga57b5cadd177847f51eaeb0cee23782c1" title="Interprets a boost::any as a string value.">asString()</a> by passing the given format.</p>
<p>The default value is "". </p>
</div>
</div>
<a class="anchor" id="a378af3d59a2765edca259cd2fb75dc90"></a><!-- doxytag: member="Wt::WItemDelegate::textFormat" ref="a378af3d59a2765edca259cd2fb75dc90" args="() const " -->
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<td class="memname">const <a class="el" href="classWt_1_1WString.html">WString</a>& Wt::WItemDelegate::textFormat </td>
<td>(</td>
<td class="paramname"></td><td>)</td>
<td> const</td>
</tr>
</table>
</div>
<div class="memdoc">
<p>Returns the text format string. </p>
<dl class="see"><dt><b>See also:</b></dt><dd><a class="el" href="classWt_1_1WItemDelegate.html#ad886d265dc00b95d9fb90c022a6322f9" title="Sets the text format string.">setTextFormat()</a> </dd></dl>
</div>
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<a class="anchor" id="a2cbc2240449a1000650f3c3b5e64bc8f"></a><!-- doxytag: member="Wt::WItemDelegate::update" ref="a2cbc2240449a1000650f3c3b5e64bc8f" args="(WWidget *widget, const WModelIndex &index, WFlags< ViewItemRenderFlag > flags)" -->
<div class="memitem">
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<td class="memname"><a class="el" href="classWt_1_1WWidget.html">WWidget</a> * Wt::WItemDelegate::update </td>
<td>(</td>
<td class="paramtype"><a class="el" href="classWt_1_1WWidget.html">WWidget</a> * </td>
<td class="paramname"><em>widget</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype">const <a class="el" href="classWt_1_1WModelIndex.html">WModelIndex</a> & </td>
<td class="paramname"><em>index</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype">WFlags< <a class="el" href="namespaceWt.html#a8df2183a957c453839f3382e3db167d6">ViewItemRenderFlag</a> > </td>
<td class="paramname"><em>flags</em> </td>
</tr>
<tr>
<td></td>
<td>)</td>
<td></td><td><code> [virtual]</code></td>
</tr>
</table>
</div>
<div class="memdoc">
<p>Creates or updates a widget that renders an item. </p>
<p>The following properties of an item are rendered:</p>
<ul>
<li>text using the <a class="el" href="group__modelview.html#gga0ae864e12320f9f89172735e075ed068a5ed17aded8a0e3b712698cf85a218f1f" title="Role for textual representation.">Wt::DisplayRole</a> data, with the format specified by <a class="el" href="classWt_1_1WItemDelegate.html#ad886d265dc00b95d9fb90c022a6322f9" title="Sets the text format string.">setTextFormat()</a></li>
<li>a check box depending on the <a class="el" href="group__modelview.html#gga1d77c4de293aebfacbdde124de06b8b0af309bd7d1183d934c73aefb2830e591c" title="Item can be checked.">Wt::ItemIsUserCheckable</a> flag and <a class="el" href="group__modelview.html#gga0ae864e12320f9f89172735e075ed068aad55e3ad8d7b76279adfc160bcb74940">Wt::CheckStateRole</a> data</li>
<li>an anchor depending on Wt::InternalPathRole or Wt::UrlRole values</li>
<li>an icon depending on the value of <a class="el" href="group__modelview.html#gga0ae864e12320f9f89172735e075ed068aab6678fc176854f7990d6cff4eed779e" title="Role for the url of an icon.">Wt::DecorationRole</a></li>
<li>a tooltip depending on the value of <a class="el" href="group__modelview.html#gga0ae864e12320f9f89172735e075ed068abde5f65c6b5cab667d11d1ceb87e4606" title="Role for a tooltip.">Wt::ToolTipRole</a></li>
<li>a custom style class depending on the value of <a class="el" href="group__modelview.html#gga0ae864e12320f9f89172735e075ed068a776934b313f273b8e5e602e7eee9f73b" title="Role for the style class.">Wt::StyleClassRole</a></li>
</ul>
<p>When the flags indicates <a class="el" href="namespaceWt.html#a8df2183a957c453839f3382e3db167d6a30a82a0b553e55ed6cdab23a8fdadc8b" title="Render in editing mode">Wt::RenderEditing</a>, then <a class="el" href="classWt_1_1WItemDelegate.html#a832398b35176a47de56dce8fc89e58dd" title="Creates an editor for a data item.">createEditor()</a> is called to create a suitable editor for editing the item. </p>
<p>Implements <a class="el" href="classWt_1_1WAbstractItemDelegate.html#adc95cc43b119f4e8ebeb36a39c015fa4">Wt::WAbstractItemDelegate</a>.</p>
</div>
</div>
<a class="anchor" id="a8d97be988b846205f61b646c3a424040"></a><!-- doxytag: member="Wt::WItemDelegate::updateModelIndex" ref="a8d97be988b846205f61b646c3a424040" args="(WWidget *widget, const WModelIndex &index)" -->
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<td class="memname">void Wt::WItemDelegate::updateModelIndex </td>
<td>(</td>
<td class="paramtype"><a class="el" href="classWt_1_1WWidget.html">WWidget</a> * </td>
<td class="paramname"><em>widget</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype">const <a class="el" href="classWt_1_1WModelIndex.html">WModelIndex</a> & </td>
<td class="paramname"><em>index</em> </td>
</tr>
<tr>
<td></td>
<td>)</td>
<td></td><td><code> [virtual]</code></td>
</tr>
</table>
</div>
<div class="memdoc">
<p>Updates the model index of a widget. </p>
<p>This method is invoked by the view when due to row/column insertions or removals, the index has shifted.</p>
<p>You should reimplement this method only if you are storing the model index in the <code>widget</code>, to update the stored model index.</p>
<p>The default implementation does nothing. </p>
<p>Reimplemented from <a class="el" href="classWt_1_1WAbstractItemDelegate.html#ac5aefa0246f0fed2dcbf9493a98205c5">Wt::WAbstractItemDelegate</a>.</p>
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