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127 lines
3.2 KiB
127 lines
3.2 KiB
/* This file is part of the KDE project |
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Copyright (C) 2004 Esben Mose Hansen <kde@mosehansen.dk> |
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This program is free software; you can redistribute it and/or |
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modify it under the terms of the GNU General Public |
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License as published by the Free Software Foundation; either |
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version 2 of the License, or (at your option) any later version. |
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This program is distributed in the hope that it will be useful, |
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but WITHOUT ANY WARRANTY; without even the implied warranty of |
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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General Public License for more details. |
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You should have received a copy of the GNU General Public License |
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along with this program; see the file COPYING. If not, write to |
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the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, |
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Boston, MA 02110-1301, USA. |
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*/ |
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#ifndef HISTORYITEM_H |
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#define HISTORYITEM_H |
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#include <QPixmap> |
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class HistoryModel; |
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class QString; |
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class QMimeData; |
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class QDataStream; |
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class HistoryItem; |
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typedef QSharedPointer<HistoryItem> HistoryItemPtr; |
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typedef QSharedPointer<const HistoryItem> HistoryItemConstPtr; |
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/** |
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* An entry in the clipboard history. |
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*/ |
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class HistoryItem |
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{ |
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public: |
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HistoryItem(const QByteArray& uuid); |
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virtual ~HistoryItem(); |
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/** |
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* Return the current item as text |
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* An image would be returned as a descriptive |
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* text, such as 32x43 image. |
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*/ |
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virtual QString text() const = 0; |
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/** |
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* @return uuid of current item. |
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*/ |
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const QByteArray& uuid() const { |
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return m_uuid; |
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} |
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/** |
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* Return the current item as pixmap |
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* A text would be returned as a null pixmap, |
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* which is also the default implementation |
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*/ |
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inline virtual const QPixmap& image() const; |
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/** |
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* Returns a pointer to a QMimeData suitable for QClipboard::setMimeData(). |
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*/ |
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virtual QMimeData* mimeData() const = 0; |
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/** |
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* Write object on datastream |
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*/ |
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virtual void write( QDataStream& stream ) const = 0; |
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/** |
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* Equality. |
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*/ |
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virtual bool operator==(const HistoryItem& rhs) const = 0; |
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/** |
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* Create an HistoryItem from MimeSources (i.e., clipboard data) |
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* returns null if create fails (e.g, unsupported mimetype) |
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*/ |
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static HistoryItemPtr create( const QMimeData* data ); |
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/** |
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* Create an HistoryItem from data stream (i.e., disk file) |
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* returns null if creation fails. In this case, the datastream |
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* is left in an undefined state. |
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*/ |
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static HistoryItemPtr create( QDataStream& dataStream ); |
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/** |
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* previous item's uuid |
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* TODO: drop, only used in unit test now |
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*/ |
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QByteArray previous_uuid() const; |
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/** |
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* next item's uuid |
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* TODO: drop, only used in unit test now |
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*/ |
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QByteArray next_uuid() const; |
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void setModel(HistoryModel *model); |
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private: |
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QByteArray m_uuid; |
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HistoryModel *m_model; |
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}; |
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inline |
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const QPixmap& HistoryItem::image() const { |
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static QPixmap nullPixmap; |
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return nullPixmap; |
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} |
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inline |
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QDataStream& operator<<( QDataStream& lhs, HistoryItem const * const rhs ) { |
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if ( rhs ) { |
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rhs->write( lhs ); |
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} |
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return lhs; |
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} |
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Q_DECLARE_METATYPE(HistoryItem*) |
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Q_DECLARE_METATYPE(HistoryItemPtr) |
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Q_DECLARE_METATYPE(HistoryItemConstPtr) |
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#endif
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