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# qabstractitemdelegate.h

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    00001 /****************************************************************************
    00002 **
    00003 ** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).
    00004 ** All rights reserved.
    00005 ** Contact: Nokia Corporation (qt-info@nokia.com)
    00006 **
    00007 ** This file is part of the QtGui module of the Qt Toolkit.
    00008 **
    00009 ** $QT_BEGIN_LICENSE:LGPL$
    00010 ** Commercial Usage
    00011 ** Licensees holding valid Qt Commercial licenses may use this file in
    00012 ** accordance with the Qt Commercial License Agreement provided with the
    00013 ** Software or, alternatively, in accordance with the terms contained in
    00014 ** a written agreement between you and Nokia.
    00015 **
    00016 ** GNU Lesser General Public License Usage
    00017 ** Alternatively, this file may be used under the terms of the GNU Lesser
    00018 ** General Public License version 2.1 as published by the Free Software
    00019 ** Foundation and appearing in the file LICENSE.LGPL included in the
    00020 ** packaging of this file.  Please review the following information to
    00021 ** ensure the GNU Lesser General Public License version 2.1 requirements
    00022 ** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
    00023 **
    00024 ** In addition, as a special exception, Nokia gives you certain additional
    00025 ** rights.  These rights are described in the Nokia Qt LGPL Exception
    00026 ** version 1.1, included in the file LGPL_EXCEPTION.txt in this module.
    00027 **
    00028 ** GNU General Public License Usage
    00029 ** Alternatively, this file may be used under the terms of the GNU
    00030 ** General Public License version 3.0 as published by the Free Software
    00031 ** Foundation and appearing in the file LICENSE.GPL included in the
    00032 ** packaging of this file.  Please review the following information to
    00033 ** ensure the GNU General Public License version 3.0 requirements will be
    00034 ** met: http://www.gnu.org/copyleft/gpl.html.
    00035 **
    00036 ** If you have questions regarding the use of this file, please contact
    00037 ** Nokia at qt-info@nokia.com.
    00038 ** $QT_END_LICENSE$
    00039 **
    00040 ****************************************************************************/
    00041
    00042 #ifndef QABSTRACTITEMDELEGATE_H
    00043 #define QABSTRACTITEMDELEGATE_H
    00044
    00045 #include <QtCore/qobject.h>
    00046 #include <QtGui/qstyleoption.h>
    00047
    00048 QT_BEGIN_HEADER
    00049
    00050 QT_BEGIN_NAMESPACE
    00051
    00052 QT_MODULE(Gui)
    00053
    00054 #ifndef QT_NO_ITEMVIEWS
    00055
    00056 class QPainter;
    00057 class QModelIndex;
    00058 class QAbstractItemModel;
    00059 class QAbstractItemView;
    00060 class QHelpEvent;
    00061
    00062 class Q_GUI_EXPORT QAbstractItemDelegate : public QObject
    00063 {
    00064     Q_OBJECT
    00065
    00066 public:
    00067
    00068     enum EndEditHint {
    00069         NoHint,
    00070         EditNextItem,
    00071         EditPreviousItem,
    00072         SubmitModelCache,
    00073         RevertModelCache
    00074     };
    00075
    00076     explicit QAbstractItemDelegate(QObject *parent = 0);
    00077     virtual ~QAbstractItemDelegate();
    00078
    00079     // painting
    00080     virtual void paint(QPainter *painter,
    00081                        const QStyleOptionViewItem &option,
    00082                        const QModelIndex &index) const = 0;
    00083
    00084     virtual QSize sizeHint(const QStyleOptionViewItem &option,
    00085                            const QModelIndex &index) const = 0;
    00086
    00087     // editing
    00088     virtual QWidget *createEditor(QWidget *parent,
    00089                                   const QStyleOptionViewItem &option,
    00090                                   const QModelIndex &index) const;
    00091
    00092     virtual void setEditorData(QWidget *editor, const QModelIndex &index) const;
    00093
    00094     virtual void setModelData(QWidget *editor,
    00095                               QAbstractItemModel *model,
    00096                               const QModelIndex &index) const;
    00097
    00098     virtual void updateEditorGeometry(QWidget *editor,
    00099                                       const QStyleOptionViewItem &option,
    00100                                       const QModelIndex &index) const;
    00101
    00102     // for non-widget editors
    00103     virtual bool editorEvent(QEvent *event,
    00104                              QAbstractItemModel *model,
    00105                              const QStyleOptionViewItem &option,
    00106                              const QModelIndex &index);
    00107
    00108     static QString elidedText(const QFontMetrics &fontMetrics, int width,
    00109                               Qt::TextElideMode mode, const QString &text);
    00110
    00111 public Q_SLOTS:
    00112     bool helpEvent(QHelpEvent *event,
    00113                    QAbstractItemView *view,
    00114                    const QStyleOptionViewItem &option,
    00115                    const QModelIndex &index);
    00116
    00117 Q_SIGNALS:
    00118     void commitData(QWidget *editor);
    00119     void closeEditor(QWidget *editor, QAbstractItemDelegate::EndEditHint hint = NoHint);
    00120     void sizeHintChanged(const QModelIndex &);
    00121
    00122 protected:
    00123     QAbstractItemDelegate(QObjectPrivate &, QObject *parent = 0);
    00124 private:
    00125     Q_DISABLE_COPY(QAbstractItemDelegate)
    00126 };
    00127
    00128 #endif // QT_NO_ITEMVIEWS
    00129
    00130 QT_END_NAMESPACE
    00131
    00132 QT_END_HEADER
    00133
    00134 #endif // QABSTRACTITEMDELEGATE_H