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<h1 class="title">informationwindow.cpp Example File</h1>
<span class="subtitle">drilldown/informationwindow.cpp</span>
<!-- $$$drilldown/informationwindow.cpp-description -->
<div class="descr"> <a name="details"></a>
<pre class="cpp">

  <span class="comment">/****************************************************************************
  **
  ** Copyright (C) 2016 The Qt Company Ltd.
  ** Contact: https://www.qt.io/licensing/
  **
  ** This file is part of the examples of the Qt Toolkit.
  **
  ** $QT_BEGIN_LICENSE:BSD$
  ** Commercial License Usage
  ** Licensees holding valid commercial Qt licenses may use this file in
  ** accordance with the commercial license agreement provided with the
  ** Software or, alternatively, in accordance with the terms contained in
  ** a written agreement between you and The Qt Company. For licensing terms
  ** and conditions see https://www.qt.io/terms-conditions. For further
  ** information use the contact form at https://www.qt.io/contact-us.
  **
  ** BSD License Usage
  ** Alternatively, you may use this file under the terms of the BSD license
  ** as follows:
  **
  ** &quot;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
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  **   * Neither the name of The Qt Company Ltd nor the names of its
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  ** 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,
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  ** 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.&quot;
  **
  ** $QT_END_LICENSE$
  **
  ****************************************************************************/</span>

  <span class="preprocessor">#include &quot;informationwindow.h&quot;</span>

  InformationWindow<span class="operator">::</span>InformationWindow(<span class="type">int</span> id<span class="operator">,</span> <span class="type"><a href="qsqlrelationaltablemodel.html">QSqlRelationalTableModel</a></span> <span class="operator">*</span>items<span class="operator">,</span>
                                       <span class="type"><a href="../qtwidgets/qwidget.html">QWidget</a></span> <span class="operator">*</span>parent)
      : <span class="type"><a href="../qtwidgets/qdialog.html">QDialog</a></span>(parent)
  {
      <span class="type"><a href="../qtwidgets/qlabel.html">QLabel</a></span> <span class="operator">*</span>itemLabel <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="../qtwidgets/qlabel.html">QLabel</a></span>(tr(<span class="string">&quot;Item: &quot;</span>));
      <span class="type"><a href="../qtwidgets/qlabel.html">QLabel</a></span> <span class="operator">*</span>descriptionLabel <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="../qtwidgets/qlabel.html">QLabel</a></span>(tr(<span class="string">&quot;Description: &quot;</span>));
      <span class="type"><a href="../qtwidgets/qlabel.html">QLabel</a></span> <span class="operator">*</span>imageFileLabel <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="../qtwidgets/qlabel.html">QLabel</a></span>(tr(<span class="string">&quot;Image file: &quot;</span>));

      createButtons();

      itemText <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="../qtwidgets/qlabel.html">QLabel</a></span>;
      descriptionEditor <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="../qtwidgets/qtextedit.html">QTextEdit</a></span>;

      imageFileEditor <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="../qtwidgets/qcombobox.html">QComboBox</a></span>;
      imageFileEditor<span class="operator">-</span><span class="operator">&gt;</span>setModel(items<span class="operator">-</span><span class="operator">&gt;</span>relationModel(<span class="number">1</span>));
      imageFileEditor<span class="operator">-</span><span class="operator">&gt;</span>setModelColumn(items<span class="operator">-</span><span class="operator">&gt;</span>relationModel(<span class="number">1</span>)<span class="operator">-</span><span class="operator">&gt;</span>fieldIndex(<span class="string">&quot;file&quot;</span>));

      mapper <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="../qtwidgets/qdatawidgetmapper.html">QDataWidgetMapper</a></span>(<span class="keyword">this</span>);
      mapper<span class="operator">-</span><span class="operator">&gt;</span>setModel(items);
      mapper<span class="operator">-</span><span class="operator">&gt;</span>setSubmitPolicy(<span class="type"><a href="../qtwidgets/qdatawidgetmapper.html">QDataWidgetMapper</a></span><span class="operator">::</span>ManualSubmit);
      mapper<span class="operator">-</span><span class="operator">&gt;</span>setItemDelegate(<span class="keyword">new</span> <span class="type"><a href="qsqlrelationaldelegate.html">QSqlRelationalDelegate</a></span>(mapper));
      mapper<span class="operator">-</span><span class="operator">&gt;</span>addMapping(imageFileEditor<span class="operator">,</span> <span class="number">1</span>);
      mapper<span class="operator">-</span><span class="operator">&gt;</span>addMapping(itemText<span class="operator">,</span> <span class="number">2</span><span class="operator">,</span> <span class="string">&quot;text&quot;</span>);
      mapper<span class="operator">-</span><span class="operator">&gt;</span>addMapping(descriptionEditor<span class="operator">,</span> <span class="number">3</span>);
      mapper<span class="operator">-</span><span class="operator">&gt;</span>setCurrentIndex(id);

      connect(descriptionEditor<span class="operator">,</span> <span class="operator">&amp;</span><span class="type"><a href="../qtwidgets/qtextedit.html">QTextEdit</a></span><span class="operator">::</span>textChanged<span class="operator">,</span> <span class="operator">[</span><span class="operator">=</span><span class="operator">]</span>() {
          enableButtons();
      });
      connect(imageFileEditor<span class="operator">,</span> <span class="type">QOverload</span><span class="operator">&lt;</span><span class="type">int</span><span class="operator">&gt;</span><span class="operator">::</span>of(<span class="operator">&amp;</span><span class="type"><a href="../qtwidgets/qcombobox.html">QComboBox</a></span><span class="operator">::</span>currentIndexChanged)<span class="operator">,</span> <span class="operator">[</span><span class="operator">=</span><span class="operator">]</span>() {
          enableButtons();
      });

      <span class="type"><a href="../qtwidgets/qformlayout.html">QFormLayout</a></span> <span class="operator">*</span>formLayout <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="../qtwidgets/qformlayout.html">QFormLayout</a></span>;
      formLayout<span class="operator">-</span><span class="operator">&gt;</span>addRow(itemLabel<span class="operator">,</span> itemText);
      formLayout<span class="operator">-</span><span class="operator">&gt;</span>addRow(imageFileLabel<span class="operator">,</span> imageFileEditor);
      formLayout<span class="operator">-</span><span class="operator">&gt;</span>addRow(descriptionLabel<span class="operator">,</span> descriptionEditor);

      <span class="type"><a href="../qtwidgets/qvboxlayout.html">QVBoxLayout</a></span> <span class="operator">*</span>layout <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="../qtwidgets/qvboxlayout.html">QVBoxLayout</a></span>;
      layout<span class="operator">-</span><span class="operator">&gt;</span>addLayout(formLayout);
      layout<span class="operator">-</span><span class="operator">&gt;</span>addWidget(buttonBox);
      setLayout(layout);

      itemId <span class="operator">=</span> id;
      displayedImage <span class="operator">=</span> imageFileEditor<span class="operator">-</span><span class="operator">&gt;</span>currentText();

      setWindowFlags(<span class="type"><a href="../qtcore/qt.html">Qt</a></span><span class="operator">::</span>Window);
      enableButtons(<span class="keyword">false</span>);
      setWindowTitle(itemText<span class="operator">-</span><span class="operator">&gt;</span>text());
  }

  <span class="type">int</span> InformationWindow<span class="operator">::</span>id() <span class="keyword">const</span>
  {
      <span class="keyword">return</span> itemId;
  }

  <span class="type">void</span> InformationWindow<span class="operator">::</span>revert()
  {
      mapper<span class="operator">-</span><span class="operator">&gt;</span>revert();
      enableButtons(<span class="keyword">false</span>);
  }

  <span class="type">void</span> InformationWindow<span class="operator">::</span>submit()
  {
      <span class="type"><a href="../qtcore/qstring.html">QString</a></span> newImage(imageFileEditor<span class="operator">-</span><span class="operator">&gt;</span>currentText());

      <span class="keyword">if</span> (displayedImage <span class="operator">!</span><span class="operator">=</span> newImage) {
          displayedImage <span class="operator">=</span> newImage;
          <span class="keyword">emit</span> imageChanged(itemId<span class="operator">,</span> newImage);
      }

      mapper<span class="operator">-</span><span class="operator">&gt;</span>submit();
      mapper<span class="operator">-</span><span class="operator">&gt;</span>setCurrentIndex(itemId);

      enableButtons(<span class="keyword">false</span>);
  }

  <span class="type">void</span> InformationWindow<span class="operator">::</span>createButtons()
  {
      closeButton <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="../qtwidgets/qpushbutton.html">QPushButton</a></span>(tr(<span class="string">&quot;&amp;Close&quot;</span>));
      revertButton <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="../qtwidgets/qpushbutton.html">QPushButton</a></span>(tr(<span class="string">&quot;&amp;Revert&quot;</span>));
      submitButton <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="../qtwidgets/qpushbutton.html">QPushButton</a></span>(tr(<span class="string">&quot;&amp;Submit&quot;</span>));

      closeButton<span class="operator">-</span><span class="operator">&gt;</span>setDefault(<span class="keyword">true</span>);

      connect(closeButton<span class="operator">,</span> <span class="operator">&amp;</span><span class="type"><a href="../qtwidgets/qpushbutton.html">QPushButton</a></span><span class="operator">::</span>clicked<span class="operator">,</span> <span class="keyword">this</span><span class="operator">,</span> <span class="operator">&amp;</span>InformationWindow<span class="operator">::</span>close);
      connect(revertButton<span class="operator">,</span> <span class="operator">&amp;</span><span class="type"><a href="../qtwidgets/qpushbutton.html">QPushButton</a></span><span class="operator">::</span>clicked<span class="operator">,</span> <span class="keyword">this</span><span class="operator">,</span> <span class="operator">&amp;</span>InformationWindow<span class="operator">::</span>revert);
      connect(submitButton<span class="operator">,</span> <span class="operator">&amp;</span><span class="type"><a href="../qtwidgets/qpushbutton.html">QPushButton</a></span><span class="operator">::</span>clicked<span class="operator">,</span> <span class="keyword">this</span><span class="operator">,</span> <span class="operator">&amp;</span>InformationWindow<span class="operator">::</span>submit);

      buttonBox <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="../qtwidgets/qdialogbuttonbox.html">QDialogButtonBox</a></span>(<span class="keyword">this</span>);
      buttonBox<span class="operator">-</span><span class="operator">&gt;</span>addButton(submitButton<span class="operator">,</span> <span class="type"><a href="../qtwidgets/qdialogbuttonbox.html">QDialogButtonBox</a></span><span class="operator">::</span>AcceptRole);
      buttonBox<span class="operator">-</span><span class="operator">&gt;</span>addButton(revertButton<span class="operator">,</span> <span class="type"><a href="../qtwidgets/qdialogbuttonbox.html">QDialogButtonBox</a></span><span class="operator">::</span>ResetRole);
      buttonBox<span class="operator">-</span><span class="operator">&gt;</span>addButton(closeButton<span class="operator">,</span> <span class="type"><a href="../qtwidgets/qdialogbuttonbox.html">QDialogButtonBox</a></span><span class="operator">::</span>RejectRole);
  }

  <span class="type">void</span> InformationWindow<span class="operator">::</span>enableButtons(bool enable)
  {
      revertButton<span class="operator">-</span><span class="operator">&gt;</span>setEnabled(enable);
      submitButton<span class="operator">-</span><span class="operator">&gt;</span>setEnabled(enable);
  }

</pre>
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<!-- @@@drilldown/informationwindow.cpp -->
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