Add mime type browser example.

Add an example showing the types in QMimeDatabase in
a QTreeView with detailed information on click.
The example has menu options to detect a file type
and search by name.

Change-Id: If6f1a6661edd100a54460a49562a8a8667245ddb
Reviewed-by: David Faure <david.faure@kdab.com>

1 files changed, 74 insertions, 0 deletions

diff --git a/examples/corelib/mimetypes/mimetypebrowser/mimetypemodel.h b/examples/corelib/mimetypes/mimetypebrowser/mimetypemodel.h
new file mode 100644
index 0000000000..0656e64e8f
--- /dev/null
+++ b/examples/corelib/mimetypes/mimetypebrowser/mimetypemodel.h
@@ -0,0 +1,74 @@
+/****************************************************************************
+**
+** Copyright (C) 2016 The Qt Company Ltd.
+** Contact: http://www.qt.io/licensing/
+**
+** 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 The Qt Company Ltd 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."
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#ifndef MIMETYPEMODEL_H
+#define MIMETYPEMODEL_H
+
+#include <QStandardItemModel>
+#include <QHash>
+
+QT_FORWARD_DECLARE_CLASS(QMimeType)
+
+class MimetypeModel : public QStandardItemModel
+{
+    Q_OBJECT
+public:
+    enum Columns { NameColumn, ColumnCount };
+
+    explicit MimetypeModel(QObject *parent = nullptr);
+
+    QVariant data(const QModelIndex &index, int role) const override;
+
+    QMimeType mimeType(const QModelIndex &) const;
+
+    QModelIndex indexForMimeType(const QString &name) const
+    { return m_nameIndexHash.value(name); }
+
+    static QString formatMimeTypeInfo(const QMimeType &);
+
+private:
+    typedef QHash<QString, QModelIndex> NameIndexHash;
+
+    void populate();
+
+    NameIndexHash m_nameIndexHash;
+};
+
+#endif // MIMETYPEMODEL_H