Главная · Все пространства имен · Все классы · Основные классы · Классы по группам · Модули · Функции

QAbstractProxyModel Class Reference
[модуль QtGui]

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

 #include <QAbstractProxyModel>

Inherits QAbstractItemModel.

Inherited by QSortFilterProxyModel.

This class was introduced in Qt 4.1.

• Список всех членов, включая унаследованные

Открытые функции

• 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

• 34 открытых функций, унаследованных от QAbstractItemModel
• 29 открытых функций, унаследованных от QObject

Дополнительные унаследованные члены

• 1 свойство, унаследованное от QObject
• 2 открытых слотов, унаследованных от QAbstractItemModel
• 1 открытый слот, унаследованный от QObject
• 14 сигналов, унаследованных от QAbstractItemModel
• 1 сигнал, унаследованный от QObject
• 5 статических открытых членов, унаследованных от QObject
• 14 защищенных функций, унаследованных от QAbstractItemModel
• 7 защищенных функций, унаследованных от QObject

Подробное описание

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.

To subclass QAbstractProxyModel, you need to implement mapFromSource() and mapToSource(). The mapSelectionFromSource() and mapSelectionToSource() functions only need to be reimplemented if you need a behavior different from the default behavior.

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

Смотрите также QSortFilterProxyModel, QAbstractItemModel и Программирование модель/представление.

Описание функций-членов

QAbstractProxyModel::QAbstractProxyModel ( QObject * parent = 0 )

Constructs a proxy model with the given parent.

QAbstractProxyModel::~QAbstractProxyModel ()

Destroys the proxy model.

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

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

Смотрите также mapToSource().

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

Returns a proxy selection mapped from the specified sourceSelection.

Reimplement this method to map source selections to proxy selections.

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

Returns a source selection mapped from the specified proxySelection.

Reimplement this method to map proxy selections to source selections.

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

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

Смотрите также mapFromSource().

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

Sets the given sourceModel to be processed by the proxy model.

Смотрите также sourceModel().

QAbstractItemModel * QAbstractProxyModel::sourceModel () const

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

Смотрите также setSourceModel().