QDirModel Class Reference
^{^{[

QtGui

module]}}

The QDirModel class provides a data model for the local filesystem. 更多...

继承 QAbstractItemModel .

类型

enum Roles { FileIconRole, FilePathRole, FileNameRole }

方法

__init__ ( self , QStringList nameFilters , QDir.Filters filters , QDir.SortFlags sort , QObject parent = None)
__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 )
QIcon fileIcon ( self , QModelIndex index )
QFileInfo fileInfo ( self , QModelIndex index )
QString fileName ( self , QModelIndex index )
QString filePath ( self , QModelIndex index )
QDir.Filters filter ( self )
Qt.ItemFlags flags ( self , QModelIndex index )
bool hasChildren ( self , QModelIndex parent = QModelIndex())
QVariant headerData ( self , int section , Qt.Orientation orientation , int role = Qt.DisplayRole)
QFileIconProvider iconProvider ( self )
QModelIndex index ( self , int row , int column , QModelIndex parent = QModelIndex())
QModelIndex index ( self , QString path , int column = 0)
bool isDir ( self , QModelIndex index )
bool isReadOnly ( self )
bool lazyChildCount ( self )
QMimeData mimeData ( self , list-of-QModelIndex indexes )
QStringList mimeTypes ( self )
QModelIndex mkdir ( self , QModelIndex parent , QString name )
QStringList nameFilters ( self )
QModelIndex parent ( self , QModelIndex child )
QObject parent ( self )
refresh ( self , QModelIndex parent = QModelIndex())
bool remove ( self , QModelIndex index )
bool resolveSymlinks ( self )
bool rmdir ( self , QModelIndex index )
int rowCount ( self , QModelIndex parent = QModelIndex())
bool setData ( self , QModelIndex index , QVariant value , int role = Qt.EditRole)
setFilter ( self , QDir.Filters filters )
setIconProvider ( self , QFileIconProvider provider )
setLazyChildCount ( self , bool enable )
setNameFilters ( self , QStringList filters )
setReadOnly ( self , bool enable )
setResolveSymlinks ( self , bool enable )
setSorting ( self , QDir.SortFlags sort )
sort ( self , int column , Qt.SortOrder order = Qt.AscendingOrder)
QDir.SortFlags sorting ( self )
Qt.DropActions supportedDropActions ( self )

详细描述

The QDirModel class provides a data model for the local filesystem.

The usage of QDirModel is not recommended anymore. The QFileSystemModel class is a more performant alternative.

This class provides access to the local filesystem, providing functions for renaming and removing files and directories, and for creating new directories. In the simplest case, it can be used with a suitable display widget as part of a browser or filer.

QDirModel keeps a cache with file information. The cache needs to be updated with refresh ().

QDirModel can be accessed using the standard interface provided by QAbstractItemModel , but it also provides some convenience functions that are specific to a directory model. The fileInfo () 和 isDir () functions provide information about the underlying files and directories related to items in the model.

Directories can be created and removed using mkdir (), rmdir (), and the model will be automatically updated to take the changes into account.

注意： QDirModel requires an instance of a GUI 应用程序。

类型文档编制

QDirModel.Roles

常量	值
`QDirModel.FileIconRole`	`Qt.DecorationRole`
`QDirModel.FilePathRole`	`Qt.UserRole + 1`
`QDirModel.FileNameRole`	?

方法文档编制

QDirModel.init ( self , QStringList nameFilters , QDir.Filters filters , QDir.SortFlags sort , QObject parent = None)

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

Constructs a new directory model with the given parent . Only those files matching the nameFilters 和 filters are included in the model. The sort order is given by the sort flags.

QDirModel.init ( self , QObject parent = None)

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

Constructs a directory model with the given parent .

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

重实现自 QAbstractItemModel.columnCount ().

Returns the number of columns in the parent model 项。

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

重实现自 QAbstractItemModel.data ().

Returns the data for the model item index with the given role .

另请参阅 setData ().

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

重实现自 QAbstractItemModel.dropMimeData ().

处理 data supplied by a drag and drop operation that ended with the given action over the row in the model specified by the row and column and by the parent index.

另请参阅 supportedDropActions ().

QIcon QDirModel.fileIcon ( self , QModelIndex index )

Returns the icons for the item stored in the model under the given index .

QFileInfo QDirModel.fileInfo ( self , QModelIndex index )

Returns the file information for the specified model index .

注意： If the model index represents a symbolic link in the underlying filing system, the file information returned will contain information about the symbolic link itself, regardless of whether resolveSymlinks is enabled or not.

另请参阅 QFileInfo.symLinkTarget ().

QString QDirModel.fileName ( self , QModelIndex index )

Returns the name of the item stored in the model under the index 给定。

QString QDirModel.filePath ( self , QModelIndex index )

Returns the path of the item stored in the model under the index 给定。

QDir.Filters QDirModel.filter ( self )

Returns the filter specification for the directory model.

另请参阅 setFilter () 和 QDir.Filters .

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

重实现自 QAbstractItemModel.flags ().

Returns the item flags for the given index 在 model.

另请参阅 Qt.ItemFlags .

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

重实现自 QAbstractItemModel.hasChildren ().

返回 true 若 parent model item has children; otherwise returns false.

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

重实现自 QAbstractItemModel.headerData ().

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

QFileIconProvider QDirModel.iconProvider ( self )

Returns the file icon provider for this directory model.

另请参阅 setIconProvider ().

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

重实现自 QAbstractItemModel.index ().

Returns the model item index for the item in the parent with the given row and column .

QModelIndex QDirModel.index ( self , QString path , int column = 0)

这是重载函数。

Returns the model item index for the given path .

bool QDirModel.isDir ( self , QModelIndex index )

Returns true if the model item index represents a directory; otherwise returns false.

bool QDirModel.isReadOnly ( self )

bool QDirModel.lazyChildCount ( self )

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

QMimeData result

重实现自 QAbstractItemModel.mimeData ().

Returns an object that contains a serialized description of the specified indexes . The format used to describe the items corresponding to the indexes is obtained from the mimeTypes () 函数。

If the list of indexes is empty, 0 is returned rather than a serialized empty list.

QStringList QDirModel.mimeTypes ( self )

重实现自 QAbstractItemModel.mimeTypes ().

Returns a list of MIME types that can be used to describe a list of items in the model.

QModelIndex QDirModel.mkdir ( self , QModelIndex parent , QString name )

Create a directory with the name 在 parent model item.

QStringList QDirModel.nameFilters ( self )

Returns a list of filters applied to the names in the model.

另请参阅 setNameFilters ().

QModelIndex QDirModel.parent ( self , QModelIndex child )

重实现自 QAbstractItemModel.parent ().

Return the parent of the given child model item.

QObject QDirModel.parent ( self )

QDirModel.refresh ( self , QModelIndex parent = QModelIndex())

QDirModel caches file information. This function updates the cache. The parent parameter is the directory from which the model is updated; the default value will update the model from root directory of the file system (the entire model).

bool QDirModel.remove ( self , QModelIndex index )

Removes the model item index from the directory model and deletes the corresponding file from the file system , returning true if successful. If the item cannot be removed, false 被返回。

警告： This function deletes files from the file system; it does not move them to a location where they can be recovered.

另请参阅 rmdir ().

bool QDirModel.resolveSymlinks ( self )

bool QDirModel.rmdir ( self , QModelIndex index )

Removes the directory corresponding to the model item index in the directory model and deletes the corresponding directory from the file system , returning true if successful. If the directory cannot be removed, false is returned.

警告： This function deletes directories from the file system; it does not move them to a location where they can be recovered.

另请参阅 remove ().

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

重实现自 QAbstractItemModel.rowCount ().

Returns the number of rows in the parent model item.

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

重实现自 QAbstractItemModel.setData ().

Sets the data for the model item index with the given role to the data referenced by the value 。返回 true if successful; otherwise returns false.

另请参阅 data () 和 Qt.ItemDataRole .

QDirModel.setFilter ( self , QDir.Filters filters )

Sets the directory model's filter to that specified by filters .

Note that the filter you set should always include the QDir.AllDirs enum value, otherwise QDirModel won't be able to read the directory structure.

另请参阅 filter () 和 QDir.Filters .

QDirModel.setIconProvider ( self , QFileIconProvider provider )

设置 provider of file icons for the directory model.

另请参阅 iconProvider ().

QDirModel.setLazyChildCount ( self , bool enable )

QDirModel.setNameFilters ( self , QStringList filters )

Sets the name filters for the directory model.

另请参阅 nameFilters ().

QDirModel.setReadOnly ( self , bool enable )

QDirModel.setResolveSymlinks ( self , bool enable )

QDirModel.setSorting ( self , QDir.SortFlags sort )

Sets the directory model's sorting order to that specified by sort .

另请参阅 sorting () and QDir.SortFlags .

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

重实现自 QAbstractItemModel.sort ().

Sort the model items in the column 使用 order given. The order is a value defined in Qt.SortOrder .

QDir.SortFlags QDirModel.sorting ( self )

Returns the sorting method used for the directory model.

另请参阅 setSorting () 和 QDir.SortFlags .

Qt.DropActions QDirModel.supportedDropActions ( self )

重实现自 QAbstractItemModel.supportedDropActions ().

Returns the drop actions supported by this model.

另请参阅 Qt.DropActions .

QDirModel Class Reference [ QtGui module]

类型

方法