QProxyModel Class Reference
^{^{[

QtGui

module]}}

The QProxyModel class provides support for processing data passed between another model and a view. 更多...

方法

__init__ ( self , QObject parent = None)
int columnCount ( self , QModelIndex parent = QModelIndex())
QVariant data ( self , QModelIndex index , int role = Qt.DisplayRole)
bool dropMimeData ( self , QMimeData data , Qt.DropAction action , int row , int column , QModelIndex parent )
fetchMore ( self , QModelIndex parent )
Qt.ItemFlags flags ( self , QModelIndex index )
bool hasChildren ( self , QModelIndex parent = QModelIndex())
QVariant headerData ( self , int section , Qt.Orientation orientation , int role = Qt.DisplayRole)
QModelIndex index ( self , int row , int column , QModelIndex parent = QModelIndex())
bool insertColumns ( self , int column , int count , QModelIndex parent = QModelIndex())
bool insertRows ( self , int row , int count , QModelIndex parent = QModelIndex())
list-of-QModelIndex match ( self , QModelIndex start , int role , QVariant value , int hits = 1, Qt.MatchFlags flags = Qt.MatchFlags(Qt.MatchStartsWith|Qt.MatchWrap))
QMimeData mimeData ( self , list-of-QModelIndex indexes )
QStringList mimeTypes ( self )
QAbstractItemModel model ( self )
QModelIndex parent ( self , QModelIndex child )
QObject parent ( self )
revert ( self )
int rowCount ( self , QModelIndex parent = QModelIndex())
bool setData ( self , QModelIndex index , QVariant value , int role = Qt.EditRole)
bool setHeaderData ( self , int section , Qt.Orientation orientation , QVariant value , int role = Qt.EditRole)
setModel ( self , QAbstractItemModel model )
sort ( self , int column , Qt.SortOrder order = Qt.AscendingOrder)
QSize span ( self , QModelIndex index )
bool submit ( self )
Qt.DropActions supportedDropActions ( self )

详细描述

The QProxyModel class provides support for processing data passed between another model and a view.

If you want to do filtering and sorting, see QSortFilterProxyModel .

Proxy models provide a standard model interface that can be used to manipulate the data retrieved through an underlying model. They can be used to perform operations such as sorting and filtering on the data obtained without changing the contents of the model.

Just as with subclasses of QAbstractItemView , QProxyModel provides the setModel () function that is used to specify the model to be acted on by the proxy. Views can be connected to either the underlying model or the proxy model with QAbstractItemView.setModel ().

Since views rely on the information provided in model indexes to identify items of data from models, and to position these items in some visual representation, proxy models must create their own model indexes instead of supplying model indexes from their underlying models.

方法文档编制

QProxyModel.init ( self , QObject parent = None)

parent argument, if not None, causes self to be owned by Qt instead of PyQt.

Constructs a proxy model with the given parent .

int QProxyModel.columnCount ( self , QModelIndex parent = QModelIndex())

重实现自 QAbstractItemModel.columnCount ().

Returns the number of columns for the given parent .

另请参阅 QAbstractItemModel.columnCount ().

QVariant QProxyModel.data ( self , QModelIndex index , int role = Qt.DisplayRole)

重实现自 QAbstractItemModel.data ().

Returns the data stored in the item with the given index under the specified role .

另请参阅 setData ().

bool QProxyModel.dropMimeData ( self , QMimeData data , Qt.DropAction action , int row , int column , QModelIndex parent )

重实现自 QAbstractItemModel.dropMimeData ().

Returns true if the model accepts the data dropped onto an attached view for the specified action ；否则返回 false.

parent , row ，和 column details can be used to control which MIME types are acceptable to different parts of a model when received via the drag and drop system.

QProxyModel.fetchMore ( self , QModelIndex parent )

重实现自 QAbstractItemModel.fetchMore ().

Fetches more child items of the given parent . This function is used by views to tell the model that they can display more data than the model has provided.

另请参阅 QAbstractItemModel.fetchMore ().

Qt.ItemFlags QProxyModel.flags ( self , QModelIndex index )

重实现自 QAbstractItemModel.flags ().

Returns the item flags for the given index .

bool QProxyModel.hasChildren ( self , QModelIndex parent = QModelIndex())

重实现自 QAbstractItemModel.hasChildren ().

Returns true if the item corresponding to the parent index has child items; otherwise returns false.

另请参阅 QAbstractItemModel.hasChildren ().

QVariant QProxyModel.headerData ( self , int section , Qt.Orientation orientation , int role = Qt.DisplayRole)

重实现自 QAbstractItemModel.headerData ().

Returns the data stored in the section of the header with specified orientation under the given role .

另请参阅 setHeaderData ().

QModelIndex QProxyModel.index ( self , int row , int column , QModelIndex parent = QModelIndex())

重实现自 QAbstractItemModel.index ().

Returns the model index with the given row , column ，和 parent .

另请参阅 QAbstractItemModel.index ().

bool QProxyModel.insertColumns ( self , int column , int count , QModelIndex parent = QModelIndex())

重实现自 QAbstractItemModel.insertColumns ().

插入 count columns into the model, creating new items as children of the given parent . The new columns are inserted before the column specified. If the parent item has no children, a single row is created to contain the required number of columns.

Returns true if the columns were successfully inserted; otherwise returns false.

另请参阅 QAbstractItemModel.insertColumns ().

bool QProxyModel.insertRows ( self , int row , int count , QModelIndex parent = QModelIndex())

重实现自 QAbstractItemModel.insertRows ().

插入 count rows into the model, creating new items as children of the given parent . The new rows are inserted before the row specified. If the parent item has no children, a single column is created to contain the required number of rows.

Returns true if the rows were successfully inserted; otherwise returns false.

另请参阅 QAbstractItemModel.insertRows ().

list-of-QModelIndex QProxyModel.match ( self , QModelIndex start , int role , QVariant value , int hits = 1, Qt.MatchFlags flags = Qt.MatchFlags(Qt.MatchStartsWith|Qt.MatchWrap))

重实现自 QAbstractItemModel.match ().

Returns a list of model indexes that each contain the given value 为 role specified. The search begins at the start index and is performed according to the specified flags . The search continues until the number of matching data items equals hits , the last row is reached, or the search reaches start again, depending on whether MatchWrap 指定在 flags .

另请参阅 QAbstractItemModel.match ().

QMimeData QProxyModel.mimeData ( self , list-of-QModelIndex indexes )

QMimeData result

重实现自 QAbstractItemModel.mimeData ().

Returns MIME data for the specified indexes 在 model.

QStringList QProxyModel.mimeTypes ( self )

重实现自 QAbstractItemModel.mimeTypes ().

Returns a list of MIME types that are supported by the model.

QAbstractItemModel QProxyModel.model ( self )

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

另请参阅 setModel ().

QModelIndex QProxyModel.parent ( self , QModelIndex child )

重实现自 QAbstractItemModel.parent ().

Returns the model index that corresponds to the parent of the given child index.

QObject QProxyModel.parent ( self )

QProxyModel.revert ( self )

重实现自 QAbstractItemModel.revert ().

int QProxyModel.rowCount ( self , QModelIndex parent = QModelIndex())

重实现自 QAbstractItemModel.rowCount ().

Returns the number of rows for the given parent .

另请参阅 QAbstractItemModel.rowCount ().

bool QProxyModel.setData ( self , QModelIndex index , QVariant value , int role = Qt.EditRole)

重实现自 QAbstractItemModel.setData ().

设置 role data for the item at index to value . Returns true if successful; otherwise returns false.

The base class implementation returns false. This function and data () must be reimplemented for editable models.

另请参阅 data (), itemData ()，和 QAbstractItemModel.setData ().

bool QProxyModel.setHeaderData ( self , int section , Qt.Orientation orientation , QVariant value , int role = Qt.EditRole)

重实现自 QAbstractItemModel.setHeaderData ().

设置 role data in the section of the header with the specified orientation 到 value 给定。

另请参阅 headerData () 和 QAbstractItemModel.setHeaderData ().

QProxyModel.setModel ( self , QAbstractItemModel model )

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

另请参阅 model ().

QProxyModel.sort ( self , int column , Qt.SortOrder order = Qt.AscendingOrder)

重实现自 QAbstractItemModel.sort ().

Sorts the child items in the specified column according to the sort order defined by order .

另请参阅 QAbstractItemModel.sort ().

QSize QProxyModel.span ( self , QModelIndex index )

重实现自 QAbstractItemModel.span ().

Returns the size of the item that corresponds to the specified index .

bool QProxyModel.submit ( self )

重实现自 QAbstractItemModel.submit ().

Qt.DropActions QProxyModel.supportedDropActions ( self )

重实现自 QAbstractItemModel.supportedDropActions ().

Returns the drop actions that are supported by the model; this is a combination of the individual actions defined in Qt.DropActions .

The selection of drop actions provided by the model will influence the behavior of the component that started the drag and drop operation.

另请参阅 拖放 .

QProxyModel Class Reference [ QtGui module]

方法