内容

• 公共函数
• 重实现公共函数
• 详细描述

QAbstractProxyModel 类

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

头：	#include <QAbstractProxyModel>
Since:	Qt 4.1
继承：	QAbstractItemModel
继承者：	QIdentityProxyModel and QSortFilterProxyModel

• 所有成员列表，包括继承成员

公共函数

	QAbstractProxyModel (QObject * parent = 0)
	~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

重实现公共函数

virtual QModelIndex	buddy (const QModelIndex & index ) const
virtual bool	canFetchMore (const QModelIndex & parent ) const
virtual QVariant	data (const QModelIndex & proxyIndex , int role = Qt::DisplayRole) const
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 ) 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 void	sort (int column , Qt::SortOrder order = Qt::AscendingOrder)
virtual QSize	span (const QModelIndex & index ) const
virtual bool	submit ()
virtual Qt::DropActions	supportedDropActions () const

• 35 公共函数继承自 QAbstractItemModel
• 29 公共函数继承自 QObject

额外继承成员

• 1 特性继承自 QObject
• 2 公共槽继承自 QAbstractItemModel
• 1 公共槽继承自 QObject
• 18 信号继承自 QAbstractItemModel
• 1 信号继承自 QObject
• 7 静态公共成员继承自 QObject
• 21 protected functions inherited from QAbstractItemModel
• 8 保护函数继承自 QObject
• 1 保护槽继承自 QAbstractItemModel

详细描述

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 .

要子类化 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.

另请参阅 QSortFilterProxyModel , QAbstractItemModel ，和 模型/视图编程 .

成员函数文档编制

QAbstractProxyModel:: QAbstractProxyModel ( QObject * parent = 0)

Constructs a proxy model with the given parent .

QAbstractProxyModel:: ~QAbstractProxyModel ()

Destroys the proxy model.

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

重实现自 QAbstractItemModel::buddy ().

该函数在 Qt 4.8 引入。

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

重实现自 QAbstractItemModel::canFetchMore ().

该函数在 Qt 4.8 引入。

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

重实现自 QAbstractItemModel::data ().

另请参阅 setData ().

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

重实现自 QAbstractItemModel::fetchMore ().

该函数在 Qt 4.8 引入。

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

重实现自 QAbstractItemModel::flags ().

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

重实现自 QAbstractItemModel::hasChildren ().

该函数在 Qt 4.8 引入。

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

重实现自 QAbstractItemModel::headerData ().

另请参阅 setHeaderData ().

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

重实现自 QAbstractItemModel::itemData ().

另请参阅 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.

另请参阅 mapToSource ().

[虚拟] 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.

[虚拟] 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.

另请参阅 mapFromSource ().

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

重实现自 QAbstractItemModel::mimeData ().

该函数在 Qt 4.8 引入。

[虚拟] QStringList QAbstractProxyModel:: mimeTypes () const

重实现自 QAbstractItemModel::mimeTypes ().

该函数在 Qt 4.8 引入。

[虚拟] void QAbstractProxyModel:: revert ()

重实现自 QAbstractItemModel::revert ().

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

重实现自 QAbstractItemModel::setData ().

另请参阅 data ().

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

重实现自 QAbstractItemModel::setHeaderData ().

另请参阅 headerData ().

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

重实现自 QAbstractItemModel::setItemData ().

另请参阅 itemData ().

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

设置给定 sourceModel to be processed by the proxy model.

另请参阅 sourceModel ().

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

重实现自 QAbstractItemModel::sort ().

该函数在 Qt 4.8 引入。

QAbstractItemModel * QAbstractProxyModel:: sourceModel () const

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

另请参阅 setSourceModel ().

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

重实现自 QAbstractItemModel::span ().

该函数在 Qt 4.8 引入。

[虚拟] bool QAbstractProxyModel:: submit ()

重实现自 QAbstractItemModel::submit ().

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

重实现自 QAbstractItemModel::supportedDropActions ().

该函数在 Qt 4.8 引入。