內容

• 特性
• 公共函數
• 重實現公共函數
• 信號
• 保護槽
• 詳細描述

QAbstractProxyModel 類

The QAbstractProxyModel class provides a base class for proxy item models that can do sorting, filtering or other data processing tasks. 更多...

頭：	#include <QAbstractProxyModel>
qmake:	QT += core
Since:	Qt 4.1
繼承：	QAbstractItemModel
繼承者：	QIdentityProxyModel and QSortFilterProxyModel

• 所有成員列錶，包括繼承成員

特性

• sourceModel : QAbstractItemModel *

• 1 特性繼承自 QObject

公共函數

	QAbstractProxyModel (QObject * parent = Q_NULLPTR)
	~QAbstractProxyModel ()
virtual QModelIndex	mapFromSource (const QModelIndex & sourceIndex ) const = 0
virtual QItemSelection	mapSelectionFromSource (const QItemSelection & sourceSelection ) const
virtual QItemSelection	mapSelectionToSource (const QItemSelection & proxySelection ) const
virtual QModelIndex	mapToSource (const QModelIndex & proxyIndex ) const = 0
virtual void	setSourceModel (QAbstractItemModel * sourceModel )
QAbstractItemModel *	sourceModel () const

重實現公共函數

virtual QModelIndex	buddy (const QModelIndex & index ) const
virtual bool	canDropMimeData (const QMimeData * data , Qt::DropAction action , int row , int column , const QModelIndex & parent ) const
virtual bool	canFetchMore (const QModelIndex & parent ) const
virtual QVariant	data (const QModelIndex & proxyIndex , int role = Qt::DisplayRole) const
virtual bool	dropMimeData (const QMimeData * data , Qt::DropAction action , int row , int column , const QModelIndex & parent )
virtual void	fetchMore (const QModelIndex & parent )
virtual Qt::ItemFlags	flags (const QModelIndex & index ) const
virtual bool	hasChildren (const QModelIndex & parent = QModelIndex()) const
virtual QVariant	headerData (int section , Qt::Orientation orientation , int role = Qt::DisplayRole) const
virtual QMap<int, QVariant>	itemData (const QModelIndex & proxyIndex ) const
virtual QMimeData *	mimeData (const QModelIndexList & indexes ) const
virtual QStringList	mimeTypes () const
virtual void	revert ()
virtual bool	setData (const QModelIndex & index , const QVariant & value , int role = Qt::EditRole)
virtual bool	setHeaderData (int section , Qt::Orientation orientation , const QVariant & value , int role = Qt::EditRole)
virtual bool	setItemData (const QModelIndex & index , const QMap<int, QVariant> & roles )
virtual QModelIndex	sibling (int row , int column , const QModelIndex & idx ) const
virtual void	sort (int column , Qt::SortOrder order = Qt::AscendingOrder)
virtual QSize	span (const QModelIndex & index ) const
virtual bool	submit ()
virtual Qt::DropActions	supportedDragActions () const
virtual Qt::DropActions	supportedDropActions () const

• 39 公共函數繼承自 QAbstractItemModel
• 32 公共函數繼承自 QObject

信號

void	sourceModelChanged ()

• 18 信號繼承自 QAbstractItemModel
• 2 信號繼承自 QObject

保護槽

void	resetInternalData ()

• 1 保護槽繼承自 QAbstractItemModel

額外繼承成員

• 2 公共槽繼承自 QAbstractItemModel
• 1 公共槽繼承自 QObject
• 11 靜態公共成員繼承自 QObject
• 19 保護函數繼承自 QAbstractItemModel
• 9 保護函數繼承自 QObject

詳細描述

The QAbstractProxyModel class provides a base class for proxy item models that can do sorting, filtering or other data processing tasks.

This class defines the standard interface that proxy models must use to be able to interoperate correctly with other model/view components. It is not supposed to be instantiated directly.

All standard proxy models are derived from the QAbstractProxyModel class. If you need to create a new proxy model class, it is usually better to subclass an existing class that provides the closest behavior to the one you want to provide.

Proxy models that filter or sort items of data from a source model should be created by using or subclassing QSortFilterProxyModel .

要子類化 QAbstractProxyModel , you need to implement mapFromSource () 和 mapToSource ()。 mapSelectionFromSource () 和 mapSelectionToSource () functions only need to be reimplemented if you need a behavior different from the default behavior.

注意： If the source model is deleted or no source model is specified, the proxy model operates on a empty placeholder model.

另請參閱 QSortFilterProxyModel , QAbstractItemModel ，和 模型/視圖編程 .

特性文檔編製

sourceModel : QAbstractItemModel *

此特性保持此代理模型的源模型。

訪問函數：

QAbstractItemModel *	sourceModel () const
virtual void	setSourceModel (QAbstractItemModel * sourceModel )

通知程序信號：

void

sourceModelChanged ()

[見下文注意事項]

注意： 這是私有信號。它可以用於信號連接，但不能由用戶發射。

成員函數文檔編製

QAbstractProxyModel:: QAbstractProxyModel ( QObject * parent = Q_NULLPTR)

Constructs a proxy model with the given parent .

QAbstractProxyModel:: ~QAbstractProxyModel ()

Destroys the proxy model.

[虛擬] QModelIndex QAbstractProxyModel:: buddy (const QModelIndex & index ) const

重實現自 QAbstractItemModel::buddy ().

[虛擬] bool QAbstractProxyModel:: canDropMimeData (const QMimeData * data , Qt::DropAction action , int row , int column , const QModelIndex & parent ) const

重實現自 QAbstractItemModel::canDropMimeData ().

該函數在 Qt 5.4 引入。

[虛擬] bool QAbstractProxyModel:: canFetchMore (const QModelIndex & parent ) const

重實現自 QAbstractItemModel::canFetchMore ().

[虛擬] QVariant QAbstractProxyModel:: data (const QModelIndex & proxyIndex , int role = Qt::DisplayRole) const

重實現自 QAbstractItemModel::data ().

另請參閱 setData ().

[虛擬] bool QAbstractProxyModel:: dropMimeData (const QMimeData * data , Qt::DropAction action , int row , int column , const QModelIndex & parent )

重實現自 QAbstractItemModel::dropMimeData ().

該函數在 Qt 5.4 引入。

[虛擬] void QAbstractProxyModel:: fetchMore (const QModelIndex & parent )

重實現自 QAbstractItemModel::fetchMore ().

[虛擬] Qt::ItemFlags QAbstractProxyModel:: flags (const QModelIndex & index ) const

重實現自 QAbstractItemModel::flags ().

[虛擬] bool QAbstractProxyModel:: hasChildren (const QModelIndex & parent = QModelIndex()) const

重實現自 QAbstractItemModel::hasChildren ().

[虛擬] QVariant QAbstractProxyModel:: headerData ( int section , Qt::Orientation orientation , int role = Qt::DisplayRole) const

重實現自 QAbstractItemModel::headerData ().

另請參閱 setHeaderData ().

[虛擬] QMap < int , QVariant > QAbstractProxyModel:: itemData (const QModelIndex & proxyIndex ) const

重實現自 QAbstractItemModel::itemData ().

另請參閱 setItemData ().

[pure virtual] QModelIndex QAbstractProxyModel:: mapFromSource (const QModelIndex & sourceIndex ) const

Reimplement this function to return the model index in the proxy model that corresponds to the sourceIndex from the source model.

另請參閱 mapToSource ().

[虛擬] QItemSelection QAbstractProxyModel:: mapSelectionFromSource (const QItemSelection & sourceSelection ) const

Returns a proxy selection mapped from the specified sourceSelection .

Reimplement this method to map source selections to proxy selections.

[虛擬] QItemSelection QAbstractProxyModel:: mapSelectionToSource (const QItemSelection & proxySelection ) const

Returns a source selection mapped from the specified proxySelection .

Reimplement this method to map proxy selections to source selections.

[pure virtual] QModelIndex QAbstractProxyModel:: mapToSource (const QModelIndex & proxyIndex ) const

Reimplement this function to return the model index in the source model that corresponds to the proxyIndex in the proxy model.

另請參閱 mapFromSource ().

[虛擬] QMimeData *QAbstractProxyModel:: mimeData (const QModelIndexList & indexes ) const

重實現自 QAbstractItemModel::mimeData ().

[虛擬] QStringList QAbstractProxyModel:: mimeTypes () const

重實現自 QAbstractItemModel::mimeTypes ().

[protected slot] void QAbstractProxyModel:: resetInternalData ()

清零 roleNames of this proxy model.

[虛擬] void QAbstractProxyModel:: revert ()

重實現自 QAbstractItemModel::revert ().

[虛擬] bool QAbstractProxyModel:: setData (const QModelIndex & index , const QVariant & value , int role = Qt::EditRole)

重實現自 QAbstractItemModel::setData ().

另請參閱 data ().

[虛擬] bool QAbstractProxyModel:: setHeaderData ( int section , Qt::Orientation orientation , const QVariant & value , int role = Qt::EditRole)

重實現自 QAbstractItemModel::setHeaderData ().

另請參閱 headerData ().

[虛擬] bool QAbstractProxyModel:: setItemData (const QModelIndex & index , const QMap < int , QVariant > & roles )

重實現自 QAbstractItemModel::setItemData ().

另請參閱 itemData ().

[虛擬] void QAbstractProxyModel:: setSourceModel ( QAbstractItemModel * sourceModel )

設置給定 sourceModel to be processed by the proxy model.

Subclasses should call beginResetModel () at the beginning of the method, disconnect from the old model, call this method, connect to the new model, and call endResetModel ().

注意： setter 函數對於特性 sourceModel .

另請參閱 sourceModel ().

[虛擬] QModelIndex QAbstractProxyModel:: sibling ( int row , int column , const QModelIndex & idx ) const

重實現自 QAbstractItemModel::sibling ().

[虛擬] void QAbstractProxyModel:: sort ( int column , Qt::SortOrder order = Qt::AscendingOrder)

重實現自 QAbstractItemModel::sort ().

QAbstractItemModel *QAbstractProxyModel:: sourceModel () const

Returns the model that contains the data that is available through the proxy model.

注意： getter 函數對於特性 sourceModel .

另請參閱 setSourceModel ().

[虛擬] QSize QAbstractProxyModel:: span (const QModelIndex & index ) const

重實現自 QAbstractItemModel::span ().

[虛擬] bool QAbstractProxyModel:: submit ()

重實現自 QAbstractItemModel::submit ().

[虛擬] Qt::DropActions QAbstractProxyModel:: supportedDragActions () const

重實現自 QAbstractItemModel::supportedDragActions ().

[虛擬] Qt::DropActions QAbstractProxyModel:: supportedDropActions () const

重實現自 QAbstractItemModel::supportedDropActions ().