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<div id="projectname">Wt examples
 <span id="projectnumber">3.2.3</span>
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<div class="title">FolderView Class Reference<div class="ingroups"><a class="el" href="group__treeviewdragdrop.html">Drag and drop in WTreeView example</a></div></div> </div>
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<!-- doxytag: class="FolderView" --><!-- doxytag: inherits="Wt::WTreeView" -->
<p>A specialized treeview that supports a custom drop event.
<a href="classFolderView.html#details">More...</a></p>
<p><code>#include <<a class="el" href="FolderView_8h_source.html">FolderView.h</a>></code></p>
<div class="dynheader">
Inheritance diagram for FolderView:</div>
<div class="dyncontent">
<div class="center"><img src="classFolderView__inherit__graph.png" border="0" usemap="#FolderView_inherit__map" alt="Inheritance graph"/></div>
<map name="FolderView_inherit__map" id="FolderView_inherit__map">
<area shape="rect" doxygen="wt.tags:../../reference/html" href="../../reference/html/classWt_1_1WTreeView.html" title="Wt::WTreeView" alt="" coords="31,304,143,331"/><area shape="rect" doxygen="wt.tags:../../reference/html" href="../../reference/html/classWt_1_1WAbstractItemView.html" title="Wt::WAbstractItemView" alt="" coords="7,229,167,256"/><area shape="rect" doxygen="wt.tags:../../reference/html" href="../../reference/html/classWt_1_1WCompositeWidget.html" title="Wt::WCompositeWidget" alt="" coords="5,155,168,181"/><area shape="rect" doxygen="wt.tags:../../reference/html" href="../../reference/html/classWt_1_1WWidget.html" title="Wt::WWidget" alt="" coords="37,80,136,107"/><area shape="rect" doxygen="wt.tags:../../reference/html" href="../../reference/html/classWt_1_1WObject.html" title="Wt::WObject" alt="" coords="39,5,135,32"/></map>
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<p><a href="classFolderView-members.html">List of all members.</a></p>
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<tr><td colspan="2"><h2><a name="pub-methods"></a>
Public Member Functions</h2></td></tr>
<tr><td class="memItemLeft" align="right" valign="top"> </td><td class="memItemRight" valign="bottom"><a class="el" href="classFolderView.html#a61d205958444a0a7f23cd9558e697c5c">FolderView</a> (<a class="elRef" doxygen="wt.tags:../../reference/html" href="../../reference/html/classWt_1_1WContainerWidget.html">Wt::WContainerWidget</a> *<a class="elRef" doxygen="wt.tags:../../reference/html" href="../../reference/html/classWt_1_1WWidget.html#a3461e31818c4d2f516641bdaf508312a">parent</a>=0)</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Constructor. <a href="#a61d205958444a0a7f23cd9558e697c5c"></a><br/></td></tr>
<tr><td colspan="2"><h2><a name="pub-static-attribs"></a>
Static Public Attributes</h2></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">static const char * </td><td class="memItemRight" valign="bottom"><a class="el" href="classFolderView.html#af50f30fffaedf2e6e4b1e0d65acc9df0">FileSelectionMimeType</a> = "application/x-computers-selection"</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Constant that indicates the mime type for a selection of files. <a href="#af50f30fffaedf2e6e4b1e0d65acc9df0"></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 void </td><td class="memItemRight" valign="bottom"><a class="el" href="classFolderView.html#a7a33bd20f3847bed7fdd1fba82c1496f">dropEvent</a> (const <a class="elRef" doxygen="wt.tags:../../reference/html" href="../../reference/html/classWt_1_1WDropEvent.html">Wt::WDropEvent</a> &event, const <a class="elRef" doxygen="wt.tags:../../reference/html" href="../../reference/html/classWt_1_1WModelIndex.html">Wt::WModelIndex</a> &target)</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Drop event. <a href="#a7a33bd20f3847bed7fdd1fba82c1496f"></a><br/></td></tr>
</table>
<hr/><a name="details" id="details"></a><h2>Detailed Description</h2>
<div class="textblock"><p>A specialized treeview that supports a custom drop event. </p>
<p>Definition at line <a class="el" href="FolderView_8h_source.html#l00019">19</a> of file <a class="el" href="FolderView_8h_source.html">FolderView.h</a>.</p>
</div><hr/><h2>Constructor & Destructor Documentation</h2>
<a class="anchor" id="a61d205958444a0a7f23cd9558e697c5c"></a><!-- doxytag: member="FolderView::FolderView" ref="a61d205958444a0a7f23cd9558e697c5c" args="(Wt::WContainerWidget *parent=0)" -->
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<td class="memname">FolderView::FolderView </td>
<td>(</td>
<td class="paramtype"><a class="elRef" doxygen="wt.tags:../../reference/html" href="../../reference/html/classWt_1_1WContainerWidget.html">Wt::WContainerWidget</a> * </td>
<td class="paramname"><em>parent</em> = <code>0</code></td><td>)</td>
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<p>Constructor. </p>
<p>Definition at line <a class="el" href="FolderView_8C_source.html#l00019">19</a> of file <a class="el" href="FolderView_8C_source.html">FolderView.C</a>.</p>
<div class="fragment"><pre class="fragment"> : <a class="codeRef" doxygen="wt.tags:../../reference/html" href="../../reference/html/classWt_1_1WTreeView.html#aa6555aa2d53557340824faa314b318f2">WTreeView</a>(parent)
{
<span class="comment">/*</span>
<span class="comment"> * Accept drops for the custom mime type.</span>
<span class="comment"> */</span>
<a class="codeRef" doxygen="wt.tags:../../reference/html" href="../../reference/html/classWt_1_1WWidget.html#aebee4b24e8128c08ae4aa3682adf6d8f">acceptDrops</a>(<a class="code" href="classFolderView.html#af50f30fffaedf2e6e4b1e0d65acc9df0" title="Constant that indicates the mime type for a selection of files.">FileSelectionMimeType</a>);
}
</pre></div>
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<hr/><h2>Member Function Documentation</h2>
<a class="anchor" id="a7a33bd20f3847bed7fdd1fba82c1496f"></a><!-- doxytag: member="FolderView::dropEvent" ref="a7a33bd20f3847bed7fdd1fba82c1496f" args="(const Wt::WDropEvent &event, const Wt::WModelIndex &target)" -->
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<td class="memname">void FolderView::dropEvent </td>
<td>(</td>
<td class="paramtype">const <a class="elRef" doxygen="wt.tags:../../reference/html" href="../../reference/html/classWt_1_1WDropEvent.html">Wt::WDropEvent</a> & </td>
<td class="paramname"><em>event</em>, </td>
</tr>
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<td class="paramkey"></td>
<td></td>
<td class="paramtype">const <a class="elRef" doxygen="wt.tags:../../reference/html" href="../../reference/html/classWt_1_1WModelIndex.html">Wt::WModelIndex</a> & </td>
<td class="paramname"><em>target</em> </td>
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<td>)</td>
<td></td><td><code> [protected, virtual]</code></td>
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<div class="memdoc">
<p>Drop event. </p>
<p>Reimplemented from <a class="elRef" doxygen="wt.tags:../../reference/html" href="../../reference/html/classWt_1_1WAbstractItemView.html#ae80a4371f19e9c0c14f1cc961da17b87">Wt::WAbstractItemView</a>.</p>
<p>Definition at line <a class="el" href="FolderView_8C_source.html#l00028">28</a> of file <a class="el" href="FolderView_8C_source.html">FolderView.C</a>.</p>
<div class="fragment"><pre class="fragment">{
<span class="comment">/*</span>
<span class="comment"> * We reimplement the drop event to handle the dropping of a</span>
<span class="comment"> * selection of computers.</span>
<span class="comment"> *</span>
<span class="comment"> * The test below would always be true in this case, since we only</span>
<span class="comment"> * indicated support for that particular mime type.</span>
<span class="comment"> */</span>
<span class="keywordflow">if</span> (event.<a class="codeRef" doxygen="wt.tags:../../reference/html" href="../../reference/html/classWt_1_1WDropEvent.html#a14e3c3a1cb956319cefe63bddc29a0de">mimeType</a>() == <a class="code" href="classFolderView.html#af50f30fffaedf2e6e4b1e0d65acc9df0" title="Constant that indicates the mime type for a selection of files.">FileSelectionMimeType</a>) {
<span class="comment">/*</span>
<span class="comment"> * The source object for a drag of a selection from a WTreeView is</span>
<span class="comment"> * a WItemSelectionModel.</span>
<span class="comment"> */</span>
<a class="codeRef" doxygen="wt.tags:../../reference/html" href="../../reference/html/classWt_1_1WItemSelectionModel.html">WItemSelectionModel</a> *selection
= <span class="keyword">dynamic_cast<</span><a class="codeRef" doxygen="wt.tags:../../reference/html" href="../../reference/html/classWt_1_1WItemSelectionModel.html">WItemSelectionModel</a> *<span class="keyword">></span>(<span class="keyword">event</span>.source());
<span class="preprocessor">#ifdef WT_THREADED</span>
<span class="preprocessor"></span> <span class="keywordtype">int</span> result = <a class="codeRef" doxygen="wt.tags:../../reference/html" href="../../reference/html/classWt_1_1WWidget.html#a52dcef5a385ddfa0a8c3e6c20000f181">WMessageBox::show</a>
(<span class="stringliteral">"Drop event"</span>,
<span class="stringliteral">"Move "</span>
+ boost::lexical_cast<std::string>(selection-><a class="codeRef" doxygen="wt.tags:../../reference/html" href="../../reference/html/classWt_1_1WItemSelectionModel.html#a4c366757fa7e6b5b6519d34e3c2ac084">selectedIndexes</a>().size())
+ <span class="stringliteral">" files to folder '"</span>
+ boost::any_cast<WString>(target.<a class="codeRef" doxygen="wt.tags:../../reference/html" href="../../reference/html/classWt_1_1WModelIndex.html#a7f05920329ca4b7fdbb10931afdb634e">data</a>(<a class="codeRef" doxygen="wt.tags:../../reference/html" href="../../reference/html/group__modelview.html#gga0ae864e12320f9f89172735e075ed068a5ed17aded8a0e3b712698cf85a218f1f">DisplayRole</a>)).toUTF8()
+ <span class="stringliteral">"' ?"</span>,
<a class="codeRef" doxygen="wt.tags:../../reference/html" href="../../reference/html/namespaceWt.html#a270a5e1af09979a6559f0f39e3d93062a5bf8c24f48fc404ccfea9ae2248a989c">Yes</a> | <a class="codeRef" doxygen="wt.tags:../../reference/html" href="../../reference/html/namespaceWt.html#a270a5e1af09979a6559f0f39e3d93062a4ca128eca84d1965d7ac1bb8a6936e58">No</a>);
<span class="preprocessor">#else</span>
<span class="preprocessor"></span> <span class="keywordtype">int</span> result = <a class="codeRef" doxygen="wt.tags:../../reference/html" href="../../reference/html/namespaceWt.html#a270a5e1af09979a6559f0f39e3d93062a5bf8c24f48fc404ccfea9ae2248a989c">Yes</a>;
<span class="preprocessor">#endif</span>
<span class="preprocessor"></span>
<span class="keywordflow">if</span> (result == Yes) {
<span class="comment">/*</span>
<span class="comment"> * You can access the source model from the selection and</span>
<span class="comment"> * manipulate it.</span>
<span class="comment"> */</span>
<a class="codeRef" doxygen="wt.tags:../../reference/html" href="../../reference/html/classWt_1_1WAbstractItemModel.html">WAbstractItemModel</a> *sourceModel = selection-><a class="codeRef" doxygen="wt.tags:../../reference/html" href="../../reference/html/classWt_1_1WItemSelectionModel.html#a42fb83302389cc2942cc09a198c0ee00">model</a>();
WModelIndexSet toChange = selection-><a class="codeRef" doxygen="wt.tags:../../reference/html" href="../../reference/html/classWt_1_1WItemSelectionModel.html#a4c366757fa7e6b5b6519d34e3c2ac084">selectedIndexes</a>();
<span class="keywordflow">for</span> (WModelIndexSet::reverse_iterator i = toChange.rbegin();
i != toChange.rend(); ++i) {
<a class="codeRef" doxygen="wt.tags:../../reference/html" href="../../reference/html/classWt_1_1WModelIndex.html">WModelIndex</a> index = *i;
<span class="comment">/*</span>
<span class="comment"> * Copy target folder to file. Since we are using a</span>
<span class="comment"> * dynamic WSortFilterProxyModel that filters on folder, this</span>
<span class="comment"> * will also result in the removal of the file from the</span>
<span class="comment"> * current view.</span>
<span class="comment"> */</span>
std::map<int, boost::any> data = <a class="codeRef" doxygen="wt.tags:../../reference/html" href="../../reference/html/classWt_1_1WAbstractItemView.html#abd583faed8e2fc3936d1b5545c4bbf84">model</a>()-><a class="codeRef" doxygen="wt.tags:../../reference/html" href="../../reference/html/classWt_1_1WAbstractItemModel.html#a74055362d502d80375c6599f6f8ea1cf">itemData</a>(target);
data[<a class="codeRef" doxygen="wt.tags:../../reference/html" href="../../reference/html/group__modelview.html#gga0ae864e12320f9f89172735e075ed068aab6678fc176854f7990d6cff4eed779e">DecorationRole</a>] = index.<a class="codeRef" doxygen="wt.tags:../../reference/html" href="../../reference/html/classWt_1_1WModelIndex.html#a7f05920329ca4b7fdbb10931afdb634e">data</a>(<a class="codeRef" doxygen="wt.tags:../../reference/html" href="../../reference/html/group__modelview.html#gga0ae864e12320f9f89172735e075ed068aab6678fc176854f7990d6cff4eed779e">DecorationRole</a>);
sourceModel-><a class="codeRef" doxygen="wt.tags:../../reference/html" href="../../reference/html/classWt_1_1WAbstractItemModel.html#ac60d1042bf1bcea9c262d3de30c520fd">setItemData</a>(index, data);
}
}
}
}
</pre></div>
</div>
</div>
<hr/><h2>Member Data Documentation</h2>
<a class="anchor" id="af50f30fffaedf2e6e4b1e0d65acc9df0"></a><!-- doxytag: member="FolderView::FileSelectionMimeType" ref="af50f30fffaedf2e6e4b1e0d65acc9df0" args="" -->
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<td class="memname">const char * <a class="el" href="classFolderView.html#af50f30fffaedf2e6e4b1e0d65acc9df0">FolderView::FileSelectionMimeType</a> = "application/x-computers-selection"<code> [static]</code></td>
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<div class="memdoc">
<p>Constant that indicates the mime type for a selection of files. </p>
<p>Every kind of dragged data should be identified using a unique mime type. </p>
<p>Definition at line <a class="el" href="FolderView_8h_source.html#l00026">26</a> of file <a class="el" href="FolderView_8h_source.html">FolderView.h</a>.</p>
</div>
</div>
<hr/>The documentation for this class was generated from the following files:<ul>
<li>/home/koen/project/wt/public-git/wt/examples/treeview-dragdrop/<a class="el" href="FolderView_8h_source.html">FolderView.h</a></li>
<li>/home/koen/project/wt/public-git/wt/examples/treeview-dragdrop/<a class="el" href="FolderView_8C_source.html">FolderView.C</a></li>
</ul>
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