QAbstractProxyModel 類

QAbstractProxyModel 類為代理項模型提供可以履行排序、過濾或其它數據處理任務的基類。 更多...

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

該類在 Qt 4.1 引入。

• 所有成員列錶，包括繼承成員

特性

• sourceModel : QAbstractItemModel*

公共函數

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

信號

void	sourceModelChanged ()

保護槽

void	resetInternalData ()

詳細描述

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 .

To subclass 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 = nullptr)

Constructs a proxy model with the given parent .

[protected slot] void QAbstractProxyModel:: resetInternalData ()

清零 roleNames of this proxy model.

[虛擬] QAbstractProxyModel:: ~QAbstractProxyModel ()

Destroys the proxy model.

[override virtual] QModelIndex QAbstractProxyModel:: buddy (const QModelIndex & index ) const

重實現： QAbstractItemModel::buddy (const QModelIndex &index) const.

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

重實現： QAbstractItemModel::canDropMimeData (const QMimeData *data, Qt::DropAction action, int row, int column, const QModelIndex &parent) const.

該函數在 Qt 5.4 引入。

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

重實現： QAbstractItemModel::canFetchMore (const QModelIndex &parent) const.

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

重實現： QAbstractItemModel::data (const QModelIndex &index, int role) const.

另請參閱 setData ().

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

重實現： QAbstractItemModel::dropMimeData (const QMimeData *data, Qt::DropAction action, int row, int column, const QModelIndex &parent).

該函數在 Qt 5.4 引入。

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

重實現： QAbstractItemModel::fetchMore (const QModelIndex &parent).

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

重實現： QAbstractItemModel::flags (const QModelIndex &index) const.

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

重實現： QAbstractItemModel::hasChildren (const QModelIndex &parent) const.

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

重實現： QAbstractItemModel::headerData (int section, Qt::Orientation orientation, int role) const.

另請參閱 setHeaderData ().

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

重實現： QAbstractItemModel::itemData (const QModelIndex &index) const.

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.

注意： 此函數可以被援引，通過元對象係統和從 QML。見 Q_INVOKABLE .

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.

注意： 此函數可以被援引，通過元對象係統和從 QML。見 Q_INVOKABLE .

[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.

注意： 此函數可以被援引，通過元對象係統和從 QML。見 Q_INVOKABLE .

[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.

注意： 此函數可以被援引，通過元對象係統和從 QML。見 Q_INVOKABLE .

另請參閱 mapFromSource ().

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

重實現： QAbstractItemModel::mimeData (const QModelIndexList &indexes) const.

[override virtual] QStringList QAbstractProxyModel:: mimeTypes () const

重實現： QAbstractItemModel::mimeTypes () const.

[override virtual] void QAbstractProxyModel:: revert ()

重實現： QAbstractItemModel::revert ().

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

重實現： QAbstractItemModel::setData (const QModelIndex &index, const QVariant &value, int role).

另請參閱 data ().

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

重實現： QAbstractItemModel::setHeaderData (int section, Qt::Orientation orientation, const QVariant &value, int role).

另請參閱 headerData ().

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

重實現： QAbstractItemModel::setItemData (const QModelIndex &index, const QMap<int, QVariant> &roles).

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 ().

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

重實現： QAbstractItemModel::sibling (int row, int column, const QModelIndex &index) const.

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

重實現： QAbstractItemModel::sort (int column, Qt::SortOrder order).

QAbstractItemModel *QAbstractProxyModel:: sourceModel () const

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

注意： Getter function for property sourceModel.

另請參閱 setSourceModel ().

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

重實現： QAbstractItemModel::span (const QModelIndex &index) const.

[override virtual] bool QAbstractProxyModel:: submit ()

重實現： QAbstractItemModel::submit ().

[override virtual] Qt::DropActions QAbstractProxyModel:: supportedDragActions () const

重實現： QAbstractItemModel::supportedDragActions () const.

[override virtual] Qt::DropActions QAbstractProxyModel:: supportedDropActions () const

重實現： QAbstractItemModel::supportedDropActions () const.

內容

1. 特性

2. 公共函數

3. 重實現公共函數

4. 信號

5. 保護槽

6. 詳細描述