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128 lines
2.7 KiB
C++
128 lines
2.7 KiB
C++
/*
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SPDX-FileCopyrightText: 2004 Esben Mose Hansen <kde@mosehansen.dk>
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SPDX-License-Identifier: GPL-2.0-or-later
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*/
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#pragma once
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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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enum class HistoryItemType {
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Text,
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Image,
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Url,
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};
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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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explicit HistoryItem(const QByteArray &uuid);
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virtual ~HistoryItem();
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/**
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* Returns the item type.
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*/
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virtual HistoryItemType type() const = 0;
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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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{
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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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protected:
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HistoryModel *m_model;
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private:
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QByteArray m_uuid;
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};
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inline const QPixmap &HistoryItem::image() const
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{
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static QPixmap nullPixmap;
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return nullPixmap;
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}
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inline QDataStream &operator<<(QDataStream &lhs, HistoryItem const *const rhs)
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{
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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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Q_DECLARE_METATYPE(HistoryItemType)
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