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<title>Wt examples: /home/koen/project/wt/public-git/wt/examples/treeview-dragdrop/FolderView.C Source File</title>
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<h1>/home/koen/project/wt/public-git/wt/examples/treeview-dragdrop/FolderView.C</h1><a href="FolderView_8C.html">Go to the documentation of this file.</a><div class="fragment"><pre class="fragment"><a name="l00001"></a>00001 <span class="comment">/*</span>
<a name="l00002"></a>00002 <span class="comment"> * Copyright (C) 2008 Emweb bvba, Kessel-Lo, Belgium.</span>
<a name="l00003"></a>00003 <span class="comment"> *</span>
<a name="l00004"></a>00004 <span class="comment"> * See the LICENSE file for terms of use.</span>
<a name="l00005"></a>00005 <span class="comment"> */</span>
<a name="l00006"></a>00006 <span class="preprocessor">#include <iostream></span>
<a name="l00007"></a>00007
<a name="l00008"></a>00008 <span class="preprocessor">#include <Wt/WAbstractItemModel></span>
<a name="l00009"></a>00009 <span class="preprocessor">#include <Wt/WItemSelectionModel></span>
<a name="l00010"></a>00010 <span class="preprocessor">#include <Wt/WMessageBox></span>
<a name="l00011"></a>00011
<a name="l00012"></a>00012 <span class="preprocessor">#include "<a class="code" href="FolderView_8h.html">FolderView.h</a>"</span>
<a name="l00013"></a>00013
<a name="l00014"></a>00014 <span class="keyword">using namespace </span>Wt;
<a name="l00015"></a>00015
<a name="l00016"></a>00016 <span class="keyword">const</span> <span class="keywordtype">char</span> *<a class="code" href="classFolderView.html#f50f30fffaedf2e6e4b1e0d65acc9df0" title="Constant that indicates the mime type for a selection of files.">FolderView::FileSelectionMimeType</a>
<a name="l00017"></a>00017 = <span class="stringliteral">"application/x-computers-selection"</span>;
<a name="l00018"></a>00018
<a name="l00019"></a><a class="code" href="classFolderView.html#61d205958444a0a7f23cd9558e697c5c">00019</a> <a class="code" href="classFolderView.html#61d205958444a0a7f23cd9558e697c5c" title="Constructor.">FolderView::FolderView</a>(<a class="codeRef" doxygen="wt.tags:../../reference/html/" href="../../reference/html/classWt_1_1WContainerWidget.html">Wt::WContainerWidget</a> *parent)
<a name="l00020"></a>00020 : <a class="codeRef" doxygen="wt.tags:../../reference/html/" href="../../reference/html/classWt_1_1WTreeView.html">WTreeView</a>(parent)
<a name="l00021"></a>00021 {
<a name="l00022"></a>00022 <span class="comment">/*</span>
<a name="l00023"></a>00023 <span class="comment"> * Accept drops for the custom mime type.</span>
<a name="l00024"></a>00024 <span class="comment"> */</span>
<a name="l00025"></a>00025 <a class="codeRef" doxygen="wt.tags:../../reference/html/" href="../../reference/html/classWt_1_1WWidget.html#ebee4b24e8128c08ae4aa3682adf6d8f">acceptDrops</a>(<a class="code" href="classFolderView.html#f50f30fffaedf2e6e4b1e0d65acc9df0" title="Constant that indicates the mime type for a selection of files.">FileSelectionMimeType</a>);
<a name="l00026"></a>00026 }
<a name="l00027"></a>00027
<a name="l00028"></a><a class="code" href="classFolderView.html#7a33bd20f3847bed7fdd1fba82c1496f">00028</a> <span class="keywordtype">void</span> <a class="code" href="classFolderView.html#7a33bd20f3847bed7fdd1fba82c1496f" title="Drop event.">FolderView::dropEvent</a>(<span class="keyword">const</span> <a class="codeRef" doxygen="wt.tags:../../reference/html/" href="../../reference/html/classWt_1_1WDropEvent.html">Wt::WDropEvent</a>& event,
<a name="l00029"></a>00029 <span class="keyword">const</span> <a class="codeRef" doxygen="wt.tags:../../reference/html/" href="../../reference/html/classWt_1_1WModelIndex.html">Wt::WModelIndex</a>& target)
<a name="l00030"></a>00030 {
<a name="l00031"></a>00031 <span class="comment">/*</span>
<a name="l00032"></a>00032 <span class="comment"> * We reimplement the drop event to handle the dropping of a</span>
<a name="l00033"></a>00033 <span class="comment"> * selection of computers.</span>
<a name="l00034"></a>00034 <span class="comment"> *</span>
<a name="l00035"></a>00035 <span class="comment"> * The test below would always be true in this case, since we only</span>
<a name="l00036"></a>00036 <span class="comment"> * indicated support for that particular mime type.</span>
<a name="l00037"></a>00037 <span class="comment"> */</span>
<a name="l00038"></a>00038 <span class="keywordflow">if</span> (event.<a class="codeRef" doxygen="wt.tags:../../reference/html/" href="../../reference/html/classWt_1_1WDropEvent.html#14e3c3a1cb956319cefe63bddc29a0de">mimeType</a>() == <a class="code" href="classFolderView.html#f50f30fffaedf2e6e4b1e0d65acc9df0" title="Constant that indicates the mime type for a selection of files.">FileSelectionMimeType</a>) {
<a name="l00039"></a>00039 <span class="comment">/*</span>
<a name="l00040"></a>00040 <span class="comment"> * The source object for a drag of a selection from a WTreeView is</span>
<a name="l00041"></a>00041 <span class="comment"> * a WItemSelectionModel.</span>
<a name="l00042"></a>00042 <span class="comment"> */</span>
<a name="l00043"></a>00043 <a class="codeRef" doxygen="wt.tags:../../reference/html/" href="../../reference/html/classWt_1_1WItemSelectionModel.html">WItemSelectionModel</a> *selection
<a name="l00044"></a>00044 = <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());
<a name="l00045"></a>00045
<a name="l00046"></a>00046 <span class="preprocessor">#ifdef WT_THREADED</span>
<a name="l00047"></a>00047 <span class="preprocessor"></span> <span class="keywordtype">int</span> result = WMessageBox::show
<a name="l00048"></a>00048 (<span class="stringliteral">"Drop event"</span>,
<a name="l00049"></a>00049 <span class="stringliteral">"Move "</span>
<a name="l00050"></a>00050 + boost::lexical_cast<std::string>(selection-><a class="codeRef" doxygen="wt.tags:../../reference/html/" href="../../reference/html/classWt_1_1WItemSelectionModel.html#4c366757fa7e6b5b6519d34e3c2ac084">selectedIndexes</a>().size())
<a name="l00051"></a>00051 + <span class="stringliteral">" files to folder '"</span>
<a name="l00052"></a>00052 + boost::any_cast<WString>(target.<a class="codeRef" doxygen="wt.tags:../../reference/html/" href="../../reference/html/classWt_1_1WModelIndex.html#7f05920329ca4b7fdbb10931afdb634e">data</a>(<a class="codeRef" doxygen="wt.tags:../../reference/html/" href="../../reference/html/group__modelview.html#gg0ae864e12320f9f89172735e075ed0685ed17aded8a0e3b712698cf85a218f1f">DisplayRole</a>)).toUTF8()
<a name="l00053"></a>00053 + <span class="stringliteral">"' ?"</span>,
<a name="l00054"></a>00054 <a class="codeRef" doxygen="wt.tags:../../reference/html/" href="../../reference/html/namespaceWt.html#270a5e1af09979a6559f0f39e3d930625bf8c24f48fc404ccfea9ae2248a989c">Yes</a> | <a class="codeRef" doxygen="wt.tags:../../reference/html/" href="../../reference/html/namespaceWt.html#270a5e1af09979a6559f0f39e3d930624ca128eca84d1965d7ac1bb8a6936e58">No</a>);
<a name="l00055"></a>00055 <span class="preprocessor">#else</span>
<a name="l00056"></a>00056 <span class="preprocessor"></span> <span class="keywordtype">int</span> result = <a class="codeRef" doxygen="wt.tags:../../reference/html/" href="../../reference/html/namespaceWt.html#270a5e1af09979a6559f0f39e3d930625bf8c24f48fc404ccfea9ae2248a989c">Yes</a>;
<a name="l00057"></a>00057 <span class="preprocessor">#endif</span>
<a name="l00058"></a>00058 <span class="preprocessor"></span>
<a name="l00059"></a>00059 <span class="keywordflow">if</span> (result == <a class="codeRef" doxygen="wt.tags:../../reference/html/" href="../../reference/html/namespaceWt.html#270a5e1af09979a6559f0f39e3d930625bf8c24f48fc404ccfea9ae2248a989c">Yes</a>) {
<a name="l00060"></a>00060 <span class="comment">/*</span>
<a name="l00061"></a>00061 <span class="comment"> * You can access the source model from the selection and</span>
<a name="l00062"></a>00062 <span class="comment"> * manipulate it.</span>
<a name="l00063"></a>00063 <span class="comment"> */</span>
<a name="l00064"></a>00064 <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#42fb83302389cc2942cc09a198c0ee00">model</a>();
<a name="l00065"></a>00065
<a name="l00066"></a>00066 WModelIndexSet toChange = selection-><a class="codeRef" doxygen="wt.tags:../../reference/html/" href="../../reference/html/classWt_1_1WItemSelectionModel.html#4c366757fa7e6b5b6519d34e3c2ac084">selectedIndexes</a>();
<a name="l00067"></a>00067
<a name="l00068"></a>00068 <span class="keywordflow">for</span> (WModelIndexSet::const_reverse_iterator i = toChange.rbegin();
<a name="l00069"></a>00069 i != toChange.rend(); ++i) {
<a name="l00070"></a>00070 <a class="codeRef" doxygen="wt.tags:../../reference/html/" href="../../reference/html/classWt_1_1WModelIndex.html">WModelIndex</a> index = *i;
<a name="l00071"></a>00071
<a name="l00072"></a>00072 <span class="comment">/*</span>
<a name="l00073"></a>00073 <span class="comment"> * Copy target folder to file. Since we are using a</span>
<a name="l00074"></a>00074 <span class="comment"> * dynamic WSortFilterProxyModel that filters on folder, this</span>
<a name="l00075"></a>00075 <span class="comment"> * will also result in the removal of the file from the</span>
<a name="l00076"></a>00076 <span class="comment"> * current view.</span>
<a name="l00077"></a>00077 <span class="comment"> */</span>
<a name="l00078"></a>00078 std::map<int, boost::any> data = <a class="codeRef" doxygen="wt.tags:../../reference/html/" href="../../reference/html/classWt_1_1WAbstractItemView.html#bd583faed8e2fc3936d1b5545c4bbf84">model</a>()-><a class="codeRef" doxygen="wt.tags:../../reference/html/" href="../../reference/html/classWt_1_1WAbstractItemModel.html#74055362d502d80375c6599f6f8ea1cf">itemData</a>(target);
<a name="l00079"></a>00079 data[<a class="codeRef" doxygen="wt.tags:../../reference/html/" href="../../reference/html/group__modelview.html#gg0ae864e12320f9f89172735e075ed068ab6678fc176854f7990d6cff4eed779e">DecorationRole</a>] = index.<a class="codeRef" doxygen="wt.tags:../../reference/html/" href="../../reference/html/classWt_1_1WModelIndex.html#7f05920329ca4b7fdbb10931afdb634e">data</a>(<a class="codeRef" doxygen="wt.tags:../../reference/html/" href="../../reference/html/group__modelview.html#gg0ae864e12320f9f89172735e075ed068ab6678fc176854f7990d6cff4eed779e">DecorationRole</a>);
<a name="l00080"></a>00080 sourceModel-><a class="codeRef" doxygen="wt.tags:../../reference/html/" href="../../reference/html/classWt_1_1WAbstractItemModel.html#c60d1042bf1bcea9c262d3de30c520fd">setItemData</a>(index, data);
<a name="l00081"></a>00081 }
<a name="l00082"></a>00082 }
<a name="l00083"></a>00083 }
<a name="l00084"></a>00084 }
</pre></div></div>
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