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Breadcrumbs go here --> </ul> </div> <div class="toolbuttons toolblock"> <ul> <li id="smallA" class="t_button">A</li> <li id="medA" class="t_button active">A</li> <li id="bigA" class="t_button">A</li> <li id="print" class="t_button"><a href="javascript:this.print();"> <span>Print</span></a></li> </ul> </div> </div> <div class="content mainContent"> <h1 class="title">mainwindow.cpp Example File</h1> <span class="small-subtitle">itemviews/editabletreemodel/mainwindow.cpp</span> <!-- $$$itemviews/editabletreemodel/mainwindow.cpp-description --> <div class="descr"> <a name="details"></a> <pre class="cpp"> <span class="comment">/**************************************************************************** ** ** Copyright (C) 2013 Digia Plc and/or its subsidiary(-ies). ** Contact: http://www.qt-project.org/legal ** ** This file is part of the examples of the Qt Toolkit. ** ** $QT_BEGIN_LICENSE:BSD$ ** You may use this file under the terms of the BSD license as follows: ** ** "Redistribution and use in source and binary forms, with or without ** modification, are permitted provided that the following conditions are ** met: ** * Redistributions of source code must retain the above copyright ** notice, this list of conditions and the following disclaimer. ** * Redistributions in binary form must reproduce the above copyright ** notice, this list of conditions and the following disclaimer in ** the documentation and/or other materials provided with the ** distribution. ** * Neither the name of Digia Plc and its Subsidiary(-ies) nor the names ** of its contributors may be used to endorse or promote products derived ** from this software without specific prior written permission. ** ** ** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS ** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT ** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR ** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT ** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, ** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT ** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, ** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY ** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT ** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE ** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE." ** ** $QT_END_LICENSE$ ** ****************************************************************************/</span> <span class="preprocessor">#include <QtGui></span> <span class="preprocessor">#include "mainwindow.h"</span> <span class="preprocessor">#include "treemodel.h"</span> MainWindow<span class="operator">::</span>MainWindow(<span class="type"><a href="qwidget.html">QWidget</a></span> <span class="operator">*</span>parent) : <span class="type"><a href="qmainwindow.html">QMainWindow</a></span>(parent) { setupUi(<span class="keyword">this</span>); <span class="preprocessor">#ifdef Q_WS_MAEMO_5</span> <span class="comment">// Alternating row colors look bad on Maemo</span> view<span class="operator">-</span><span class="operator">></span>setAlternatingRowColors(<span class="keyword">false</span>); <span class="preprocessor">#endif</span> <span class="type"><a href="qstringlist.html">QStringList</a></span> headers; headers <span class="operator"><</span><span class="operator"><</span> tr(<span class="string">"Title"</span>) <span class="operator"><</span><span class="operator"><</span> tr(<span class="string">"Description"</span>); <span class="type"><a href="qfile.html">QFile</a></span> file(<span class="string">":/default.txt"</span>); file<span class="operator">.</span>open(<span class="type"><a href="qiodevice.html">QIODevice</a></span><span class="operator">::</span>ReadOnly); TreeModel <span class="operator">*</span>model <span class="operator">=</span> <span class="keyword">new</span> TreeModel(headers<span class="operator">,</span> file<span class="operator">.</span>readAll()); file<span class="operator">.</span>close(); view<span class="operator">-</span><span class="operator">></span>setModel(model); <span class="keyword">for</span> (<span class="type">int</span> column <span class="operator">=</span> <span class="number">0</span>; column <span class="operator"><</span> model<span class="operator">-</span><span class="operator">></span>columnCount(); <span class="operator">+</span><span class="operator">+</span>column) view<span class="operator">-</span><span class="operator">></span>resizeColumnToContents(column); connect(exitAction<span class="operator">,</span> SIGNAL(triggered())<span class="operator">,</span> qApp<span class="operator">,</span> SLOT(quit())); connect(view<span class="operator">-</span><span class="operator">></span>selectionModel()<span class="operator">,</span> SIGNAL(selectionChanged(<span class="keyword">const</span> <span class="type"><a href="qitemselection.html">QItemSelection</a></span> <span class="operator">&</span><span class="operator">,</span> <span class="keyword">const</span> <span class="type"><a href="qitemselection.html">QItemSelection</a></span> <span class="operator">&</span>))<span class="operator">,</span> <span class="keyword">this</span><span class="operator">,</span> SLOT(updateActions())); connect(actionsMenu<span class="operator">,</span> SIGNAL(aboutToShow())<span class="operator">,</span> <span class="keyword">this</span><span class="operator">,</span> SLOT(updateActions())); connect(insertRowAction<span class="operator">,</span> SIGNAL(triggered())<span class="operator">,</span> <span class="keyword">this</span><span class="operator">,</span> SLOT(insertRow())); connect(insertColumnAction<span class="operator">,</span> SIGNAL(triggered())<span class="operator">,</span> <span class="keyword">this</span><span class="operator">,</span> SLOT(insertColumn())); connect(removeRowAction<span class="operator">,</span> SIGNAL(triggered())<span class="operator">,</span> <span class="keyword">this</span><span class="operator">,</span> SLOT(removeRow())); connect(removeColumnAction<span class="operator">,</span> SIGNAL(triggered())<span class="operator">,</span> <span class="keyword">this</span><span class="operator">,</span> SLOT(removeColumn())); connect(insertChildAction<span class="operator">,</span> SIGNAL(triggered())<span class="operator">,</span> <span class="keyword">this</span><span class="operator">,</span> SLOT(insertChild())); updateActions(); } <span class="type">void</span> MainWindow<span class="operator">::</span>insertChild() { <span class="type"><a href="qmodelindex.html">QModelIndex</a></span> index <span class="operator">=</span> view<span class="operator">-</span><span class="operator">></span>selectionModel()<span class="operator">-</span><span class="operator">></span>currentIndex(); <span class="type"><a href="qabstractitemmodel.html">QAbstractItemModel</a></span> <span class="operator">*</span>model <span class="operator">=</span> view<span class="operator">-</span><span class="operator">></span>model(); <span class="keyword">if</span> (model<span class="operator">-</span><span class="operator">></span>columnCount(index) <span class="operator">=</span><span class="operator">=</span> <span class="number">0</span>) { <span class="keyword">if</span> (<span class="operator">!</span>model<span class="operator">-</span><span class="operator">></span>insertColumn(<span class="number">0</span><span class="operator">,</span> index)) <span class="keyword">return</span>; } <span class="keyword">if</span> (<span class="operator">!</span>model<span class="operator">-</span><span class="operator">></span>insertRow(<span class="number">0</span><span class="operator">,</span> index)) <span class="keyword">return</span>; <span class="keyword">for</span> (<span class="type">int</span> column <span class="operator">=</span> <span class="number">0</span>; column <span class="operator"><</span> model<span class="operator">-</span><span class="operator">></span>columnCount(index); <span class="operator">+</span><span class="operator">+</span>column) { <span class="type"><a href="qmodelindex.html">QModelIndex</a></span> child <span class="operator">=</span> model<span class="operator">-</span><span class="operator">></span>index(<span class="number">0</span><span class="operator">,</span> column<span class="operator">,</span> index); model<span class="operator">-</span><span class="operator">></span>setData(child<span class="operator">,</span> <span class="type"><a href="qvariant.html">QVariant</a></span>(<span class="string">"[No data]"</span>)<span class="operator">,</span> <span class="type"><a href="qt.html">Qt</a></span><span class="operator">::</span>EditRole); <span class="keyword">if</span> (<span class="operator">!</span>model<span class="operator">-</span><span class="operator">></span>headerData(column<span class="operator">,</span> <span class="type"><a href="qt.html">Qt</a></span><span class="operator">::</span>Horizontal)<span class="operator">.</span>isValid()) model<span class="operator">-</span><span class="operator">></span>setHeaderData(column<span class="operator">,</span> <span class="type"><a href="qt.html">Qt</a></span><span class="operator">::</span>Horizontal<span class="operator">,</span> <span class="type"><a href="qvariant.html">QVariant</a></span>(<span class="string">"[No header]"</span>)<span class="operator">,</span> <span class="type"><a href="qt.html">Qt</a></span><span class="operator">::</span>EditRole); } view<span class="operator">-</span><span class="operator">></span>selectionModel()<span class="operator">-</span><span class="operator">></span>setCurrentIndex(model<span class="operator">-</span><span class="operator">></span>index(<span class="number">0</span><span class="operator">,</span> <span class="number">0</span><span class="operator">,</span> index)<span class="operator">,</span> <span class="type"><a href="qitemselectionmodel.html">QItemSelectionModel</a></span><span class="operator">::</span>ClearAndSelect); updateActions(); } <span class="type">bool</span> MainWindow<span class="operator">::</span>insertColumn(<span class="keyword">const</span> <span class="type"><a href="qmodelindex.html">QModelIndex</a></span> <span class="operator">&</span>parent) { <span class="type"><a href="qabstractitemmodel.html">QAbstractItemModel</a></span> <span class="operator">*</span>model <span class="operator">=</span> view<span class="operator">-</span><span class="operator">></span>model(); <span class="type">int</span> column <span class="operator">=</span> view<span class="operator">-</span><span class="operator">></span>selectionModel()<span class="operator">-</span><span class="operator">></span>currentIndex()<span class="operator">.</span>column(); <span class="comment">// Insert a column in the parent item.</span> <span class="type">bool</span> changed <span class="operator">=</span> model<span class="operator">-</span><span class="operator">></span>insertColumn(column <span class="operator">+</span> <span class="number">1</span><span class="operator">,</span> parent); <span class="keyword">if</span> (changed) model<span class="operator">-</span><span class="operator">></span>setHeaderData(column <span class="operator">+</span> <span class="number">1</span><span class="operator">,</span> <span class="type"><a href="qt.html">Qt</a></span><span class="operator">::</span>Horizontal<span class="operator">,</span> <span class="type"><a href="qvariant.html">QVariant</a></span>(<span class="string">"[No header]"</span>)<span class="operator">,</span> <span class="type"><a href="qt.html">Qt</a></span><span class="operator">::</span>EditRole); updateActions(); <span class="keyword">return</span> changed; } <span class="type">void</span> MainWindow<span class="operator">::</span>insertRow() { <span class="type"><a href="qmodelindex.html">QModelIndex</a></span> index <span class="operator">=</span> view<span class="operator">-</span><span class="operator">></span>selectionModel()<span class="operator">-</span><span class="operator">></span>currentIndex(); <span class="type"><a href="qabstractitemmodel.html">QAbstractItemModel</a></span> <span class="operator">*</span>model <span class="operator">=</span> view<span class="operator">-</span><span class="operator">></span>model(); <span class="keyword">if</span> (<span class="operator">!</span>model<span class="operator">-</span><span class="operator">></span>insertRow(index<span class="operator">.</span>row()<span class="operator">+</span><span class="number">1</span><span class="operator">,</span> index<span class="operator">.</span>parent())) <span class="keyword">return</span>; updateActions(); <span class="keyword">for</span> (<span class="type">int</span> column <span class="operator">=</span> <span class="number">0</span>; column <span class="operator"><</span> model<span class="operator">-</span><span class="operator">></span>columnCount(index<span class="operator">.</span>parent()); <span class="operator">+</span><span class="operator">+</span>column) { <span class="type"><a href="qmodelindex.html">QModelIndex</a></span> child <span class="operator">=</span> model<span class="operator">-</span><span class="operator">></span>index(index<span class="operator">.</span>row()<span class="operator">+</span><span class="number">1</span><span class="operator">,</span> column<span class="operator">,</span> index<span class="operator">.</span>parent()); model<span class="operator">-</span><span class="operator">></span>setData(child<span class="operator">,</span> <span class="type"><a href="qvariant.html">QVariant</a></span>(<span class="string">"[No data]"</span>)<span class="operator">,</span> <span class="type"><a href="qt.html">Qt</a></span><span class="operator">::</span>EditRole); } } <span class="type">bool</span> MainWindow<span class="operator">::</span>removeColumn(<span class="keyword">const</span> <span class="type"><a href="qmodelindex.html">QModelIndex</a></span> <span class="operator">&</span>parent) { <span class="type"><a href="qabstractitemmodel.html">QAbstractItemModel</a></span> <span class="operator">*</span>model <span class="operator">=</span> view<span class="operator">-</span><span class="operator">></span>model(); <span class="type">int</span> column <span class="operator">=</span> view<span class="operator">-</span><span class="operator">></span>selectionModel()<span class="operator">-</span><span class="operator">></span>currentIndex()<span class="operator">.</span>column(); <span class="comment">// Insert columns in each child of the parent item.</span> <span class="type">bool</span> changed <span class="operator">=</span> model<span class="operator">-</span><span class="operator">></span>removeColumn(column<span class="operator">,</span> parent); <span class="keyword">if</span> (<span class="operator">!</span>parent<span class="operator">.</span>isValid() <span class="operator">&</span><span class="operator">&</span> changed) updateActions(); <span class="keyword">return</span> changed; } <span class="type">void</span> MainWindow<span class="operator">::</span>removeRow() { <span class="type"><a href="qmodelindex.html">QModelIndex</a></span> index <span class="operator">=</span> view<span class="operator">-</span><span class="operator">></span>selectionModel()<span class="operator">-</span><span class="operator">></span>currentIndex(); <span class="type"><a href="qabstractitemmodel.html">QAbstractItemModel</a></span> <span class="operator">*</span>model <span class="operator">=</span> view<span class="operator">-</span><span class="operator">></span>model(); <span class="keyword">if</span> (model<span class="operator">-</span><span class="operator">></span>removeRow(index<span class="operator">.</span>row()<span class="operator">,</span> index<span class="operator">.</span>parent())) updateActions(); } <span class="type">void</span> MainWindow<span class="operator">::</span>updateActions() { <span class="type">bool</span> hasSelection <span class="operator">=</span> <span class="operator">!</span>view<span class="operator">-</span><span class="operator">></span>selectionModel()<span class="operator">-</span><span class="operator">></span>selection()<span class="operator">.</span>isEmpty(); removeRowAction<span class="operator">-</span><span class="operator">></span>setEnabled(hasSelection); removeColumnAction<span class="operator">-</span><span class="operator">></span>setEnabled(hasSelection); <span class="type">bool</span> hasCurrent <span class="operator">=</span> view<span class="operator">-</span><span class="operator">></span>selectionModel()<span class="operator">-</span><span class="operator">></span>currentIndex()<span class="operator">.</span>isValid(); insertRowAction<span class="operator">-</span><span class="operator">></span>setEnabled(hasCurrent); insertColumnAction<span class="operator">-</span><span class="operator">></span>setEnabled(hasCurrent); <span class="keyword">if</span> (hasCurrent) { view<span class="operator">-</span><span class="operator">></span>closePersistentEditor(view<span class="operator">-</span><span class="operator">></span>selectionModel()<span class="operator">-</span><span class="operator">></span>currentIndex()); <span class="type">int</span> row <span class="operator">=</span> view<span class="operator">-</span><span class="operator">></span>selectionModel()<span class="operator">-</span><span class="operator">></span>currentIndex()<span class="operator">.</span>row(); <span class="type">int</span> column <span class="operator">=</span> view<span class="operator">-</span><span class="operator">></span>selectionModel()<span class="operator">-</span><span class="operator">></span>currentIndex()<span class="operator">.</span>column(); <span class="keyword">if</span> (view<span class="operator">-</span><span class="operator">></span>selectionModel()<span class="operator">-</span><span class="operator">></span>currentIndex()<span class="operator">.</span>parent()<span class="operator">.</span>isValid()) statusBar()<span class="operator">-</span><span class="operator">></span>showMessage(tr(<span class="string">"Position: (%1,%2)"</span>)<span class="operator">.</span>arg(row)<span class="operator">.</span>arg(column)); <span class="keyword">else</span> statusBar()<span class="operator">-</span><span class="operator">></span>showMessage(tr(<span class="string">"Position: (%1,%2) in top level"</span>)<span class="operator">.</span>arg(row)<span class="operator">.</span>arg(column)); } }</pre> </div> <!-- @@@itemviews/editabletreemodel/mainwindow.cpp --> </div> </div> </div> <div class="ft"> <span></span> </div> </div> <div class="footer"> <p> <acronym title="Copyright">©</acronym> 2013 Digia Plc and/or its subsidiaries. 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