358 lines
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<h1 class="title">treeitem.cpp Example File</h1>
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<span class="small-subtitle">itemviews/editabletreemodel/treeitem.cpp</span>
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<!-- $$$itemviews/editabletreemodel/treeitem.cpp-description -->
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<div class="descr"> <a name="details"></a>
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<pre class="cpp"> <span class="comment">/****************************************************************************
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**
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** Copyright (C) 2015 The Qt Company Ltd.
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** Contact: http://www.qt.io/licensing/
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**
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** This file is part of the examples of the Qt Toolkit.
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**
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** $QT_BEGIN_LICENSE:BSD$
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** You may use this file under the terms of the BSD license as follows:
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**
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** "Redistribution and use in source and binary forms, with or without
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** modification, are permitted provided that the following conditions are
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** met:
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** * Redistributions of source code must retain the above copyright
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** notice, this list of conditions and the following disclaimer.
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** * Redistributions in binary form must reproduce the above copyright
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** notice, this list of conditions and the following disclaimer in
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** the documentation and/or other materials provided with the
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** distribution.
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** * Neither the name of The Qt Company Ltd nor the names of its
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** contributors may be used to endorse or promote products derived
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** from this software without specific prior written permission.
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**
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**
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** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE."
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**
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** $QT_END_LICENSE$
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**
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****************************************************************************/</span>
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<span class="comment">/*
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treeitem.cpp
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A container for items of data supplied by the simple tree model.
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*/</span>
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<span class="preprocessor">#include <QStringList></span>
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<span class="preprocessor">#include "treeitem.h"</span>
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TreeItem<span class="operator">::</span>TreeItem(<span class="keyword">const</span> <span class="type"><a href="qvector.html">QVector</a></span><span class="operator"><</span><span class="type"><a href="qvariant.html">QVariant</a></span><span class="operator">></span> <span class="operator">&</span>data<span class="operator">,</span> TreeItem <span class="operator">*</span>parent)
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{
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parentItem <span class="operator">=</span> parent;
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itemData <span class="operator">=</span> data;
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}
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TreeItem<span class="operator">::</span><span class="operator">~</span>TreeItem()
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{
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<a href="qtalgorithms.html#qDeleteAll">qDeleteAll</a>(childItems);
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}
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TreeItem <span class="operator">*</span>TreeItem<span class="operator">::</span>child(<span class="type">int</span> number)
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{
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<span class="keyword">return</span> childItems<span class="operator">.</span>value(number);
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}
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<span class="type">int</span> TreeItem<span class="operator">::</span>childCount() <span class="keyword">const</span>
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{
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<span class="keyword">return</span> childItems<span class="operator">.</span>count();
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}
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<span class="type">int</span> TreeItem<span class="operator">::</span>childNumber() <span class="keyword">const</span>
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{
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<span class="keyword">if</span> (parentItem)
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<span class="keyword">return</span> parentItem<span class="operator">-</span><span class="operator">></span>childItems<span class="operator">.</span>indexOf(<span class="keyword">const_cast</span><span class="operator"><</span>TreeItem<span class="operator">*</span><span class="operator">></span>(<span class="keyword">this</span>));
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<span class="keyword">return</span> <span class="number">0</span>;
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}
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<span class="type">int</span> TreeItem<span class="operator">::</span>columnCount() <span class="keyword">const</span>
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{
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<span class="keyword">return</span> itemData<span class="operator">.</span>count();
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}
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<span class="type"><a href="qvariant.html">QVariant</a></span> TreeItem<span class="operator">::</span>data(<span class="type">int</span> column) <span class="keyword">const</span>
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{
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<span class="keyword">return</span> itemData<span class="operator">.</span>value(column);
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}
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<span class="type">bool</span> TreeItem<span class="operator">::</span>insertChildren(<span class="type">int</span> position<span class="operator">,</span> <span class="type">int</span> count<span class="operator">,</span> <span class="type">int</span> columns)
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{
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<span class="keyword">if</span> (position <span class="operator"><</span> <span class="number">0</span> <span class="operator">|</span><span class="operator">|</span> position <span class="operator">></span> childItems<span class="operator">.</span>size())
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<span class="keyword">return</span> <span class="keyword">false</span>;
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<span class="keyword">for</span> (<span class="type">int</span> row <span class="operator">=</span> <span class="number">0</span>; row <span class="operator"><</span> count; <span class="operator">+</span><span class="operator">+</span>row) {
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<span class="type"><a href="qvector.html">QVector</a></span><span class="operator"><</span><span class="type"><a href="qvariant.html">QVariant</a></span><span class="operator">></span> data(columns);
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TreeItem <span class="operator">*</span>item <span class="operator">=</span> <span class="keyword">new</span> TreeItem(data<span class="operator">,</span> <span class="keyword">this</span>);
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childItems<span class="operator">.</span>insert(position<span class="operator">,</span> item);
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}
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<span class="keyword">return</span> <span class="keyword">true</span>;
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}
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<span class="type">bool</span> TreeItem<span class="operator">::</span>insertColumns(<span class="type">int</span> position<span class="operator">,</span> <span class="type">int</span> columns)
|
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{
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<span class="keyword">if</span> (position <span class="operator"><</span> <span class="number">0</span> <span class="operator">|</span><span class="operator">|</span> position <span class="operator">></span> itemData<span class="operator">.</span>size())
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<span class="keyword">return</span> <span class="keyword">false</span>;
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|
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<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> columns; <span class="operator">+</span><span class="operator">+</span>column)
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itemData<span class="operator">.</span>insert(position<span class="operator">,</span> <span class="type"><a href="qvariant.html">QVariant</a></span>());
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foreach (TreeItem <span class="operator">*</span>child<span class="operator">,</span> childItems)
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child<span class="operator">-</span><span class="operator">></span>insertColumns(position<span class="operator">,</span> columns);
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<span class="keyword">return</span> <span class="keyword">true</span>;
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}
|
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TreeItem <span class="operator">*</span>TreeItem<span class="operator">::</span>parent()
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{
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<span class="keyword">return</span> parentItem;
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}
|
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<span class="type">bool</span> TreeItem<span class="operator">::</span>removeChildren(<span class="type">int</span> position<span class="operator">,</span> <span class="type">int</span> count)
|
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{
|
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<span class="keyword">if</span> (position <span class="operator"><</span> <span class="number">0</span> <span class="operator">|</span><span class="operator">|</span> position <span class="operator">+</span> count <span class="operator">></span> childItems<span class="operator">.</span>size())
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<span class="keyword">return</span> <span class="keyword">false</span>;
|
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|
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<span class="keyword">for</span> (<span class="type">int</span> row <span class="operator">=</span> <span class="number">0</span>; row <span class="operator"><</span> count; <span class="operator">+</span><span class="operator">+</span>row)
|
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<span class="keyword">delete</span> childItems<span class="operator">.</span>takeAt(position);
|
|
|
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<span class="keyword">return</span> <span class="keyword">true</span>;
|
|
}
|
|
|
|
<span class="type">bool</span> TreeItem<span class="operator">::</span>removeColumns(<span class="type">int</span> position<span class="operator">,</span> <span class="type">int</span> columns)
|
|
{
|
|
<span class="keyword">if</span> (position <span class="operator"><</span> <span class="number">0</span> <span class="operator">|</span><span class="operator">|</span> position <span class="operator">+</span> columns <span class="operator">></span> itemData<span class="operator">.</span>size())
|
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<span class="keyword">return</span> <span class="keyword">false</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> columns; <span class="operator">+</span><span class="operator">+</span>column)
|
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itemData<span class="operator">.</span>remove(position);
|
|
|
|
foreach (TreeItem <span class="operator">*</span>child<span class="operator">,</span> childItems)
|
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child<span class="operator">-</span><span class="operator">></span>removeColumns(position<span class="operator">,</span> columns);
|
|
|
|
<span class="keyword">return</span> <span class="keyword">true</span>;
|
|
}
|
|
|
|
<span class="type">bool</span> TreeItem<span class="operator">::</span>setData(<span class="type">int</span> column<span class="operator">,</span> <span class="keyword">const</span> <span class="type"><a href="qvariant.html">QVariant</a></span> <span class="operator">&</span>value)
|
|
{
|
|
<span class="keyword">if</span> (column <span class="operator"><</span> <span class="number">0</span> <span class="operator">|</span><span class="operator">|</span> column <span class="operator">></span><span class="operator">=</span> itemData<span class="operator">.</span>size())
|
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<span class="keyword">return</span> <span class="keyword">false</span>;
|
|
|
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itemData<span class="operator">[</span>column<span class="operator">]</span> <span class="operator">=</span> value;
|
|
<span class="keyword">return</span> <span class="keyword">true</span>;
|
|
}</pre>
|
|
</div>
|
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<!-- @@@itemviews/editabletreemodel/treeitem.cpp -->
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<acronym title="Copyright">©</acronym> 2015 The Qt Company Ltd.
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Documentation contributions included herein are the copyrights of
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their respective owners.</p>
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The documentation provided herein is licensed under the terms of the
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License version 1.3</a> as published by the Free Software Foundation.</p>
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