PySide 模块

PySide.QtGui

QFileSystemModel ¶

概要 ¶

函数 ¶

def fileIcon (index)
def fileInfo (index)
def fileName (index)
def filePath (index)
def filter ()
def iconProvider ()
def index (path[, column=0])
def isDir (index)
def isReadOnly ()
def lastModified (index)
def mkdir (parent, name)
def myComputer ([role=Qt.DisplayRole])
def nameFilterDisables ()
def nameFilters ()
def permissions (index)
def remove (index)
def resolveSymlinks ()
def rmdir (index)
def rootDirectory ()
def rootPath ()
def setFilter (filters)
def setIconProvider (provider)
def setNameFilterDisables (enable)
def setNameFilters (filters)
def setReadOnly (enable)
def setResolveSymlinks (enable)
def setRootPath (path)
def size (index)
def type (index)

信号 ¶

def directoryLoaded (path)
def fileRenamed (path, oldName, newName)
def rootPathChanged (newPath)

详细描述 ¶

PySide.QtGui.QFileSystemModel class provides a data model for the local filesystem.

此类提供对本地文件系统的访问，提供用于重命名移除文件目录及创建新目录的函数。在最简单情况下，它可以被用于适合的显示 Widget 作为浏览器 (或过滤器) 的一部分。

PySide.QtGui.QFileSystemModel can be accessed using the standard interface provided by PySide.QtCore.QAbstractItemModel , but it also provides some convenience functions that are specific to a directory model. The PySide.QtGui.QFileSystemModel.fileInfo() , PySide.QtGui.QFileSystemModel.isDir() , name() , and path() functions provide information about the underlying files and directories related to items in the model. Directories can be created and removed using PySide.QtGui.QFileSystemModel.mkdir() , PySide.QtGui.QFileSystemModel.rmdir() .

注意

PySide.QtGui.QFileSystemModel requires an instance of a GUI application.

用法范例 ¶

A directory model that displays the contents of a default directory is usually constructed with a parent object:

											model = QFileSystemModel()
model.setRootPath(QDir.currentPath())

树视图可用于显示模型的内容

											tree =  QTreeView()
tree.setModel(model)

and the contents of a particular directory can be displayed by setting the tree view's root index:

											tree.setRootIndex(model.index(QDir.currentPath()))
											
										

The view's root index can be used to control how much of a hierarchical model is displayed. PySide.QtGui.QDirModel provides a convenience function that returns a suitable model index for a path to a directory within the model.

缓存和性能 ¶

PySide.QtGui.QFileSystemModel will not fetch any files or directories until PySide.QtGui.QFileSystemModel.setRootPath() is called. This will prevent any unnecessary querying on the file system until that point such as listing the drives on Windows.

不像 PySide.QtGui.QDirModel , PySide.QtGui.QFileSystemModel uses a separate thread to populate itself so it will not cause the main thread to hang as the file system is being queried. Calls to PySide.QtGui.QFileSystemModel.rowCount() will return 0 until the model populates a directory.

PySide.QtGui.QFileSystemModel keeps a cache with file information. The cache is automatically kept up to date using the PySide.QtCore.QFileSystemWatcher .

另请参阅

模型类

class PySide.QtGui. QFileSystemModel ( [ parent=None ] ) ¶

参数：	parent – `PySide.QtCore.QObject`

构造文件系统模型采用给定 parent .

PySide.QtGui.QFileSystemModel. Roles ¶

常量	描述
QFileSystemModel.FileIconRole
QFileSystemModel.FilePathRole
QFileSystemModel.FileNameRole
QFileSystemModel.FilePermissions

PySide.QtGui.QFileSystemModel. directoryLoaded ( path ) ¶

参数：	path – unicode

PySide.QtGui.QFileSystemModel. fileIcon ( index ) ¶

参数：	index – `PySide.QtCore.QModelIndex`
返回类型：	`PySide.QtGui.QIcon`

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

PySide.QtGui.QFileSystemModel. fileInfo ( index ) ¶

参数：	index – `PySide.QtCore.QModelIndex`
返回类型：	`PySide.QtCore.QFileInfo`

返回 PySide.QtCore.QFileInfo for the item stored in the model under the given index .

PySide.QtGui.QFileSystemModel. fileName ( index ) ¶

参数：	index – `PySide.QtCore.QModelIndex`
返回类型：	unicode

Returns the file name for the item stored in the model under the given index .

PySide.QtGui.QFileSystemModel. filePath ( index ) ¶

参数：	index – `PySide.QtCore.QModelIndex`
返回类型：	unicode

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

PySide.QtGui.QFileSystemModel. fileRenamed ( path , oldName , newName ) ¶

参数：	path – unicode oldName – unicode newName – unicode

PySide.QtGui.QFileSystemModel. filter ( ) ¶

返回类型：	`PySide.QtCore.QDir.Filters`

Returns the filter specified for the directory model.

If a filter has not been set, the default filter is QDir.AllEntries | QDir.NoDotAndDotDot | QDir.AllDirs .

另请参阅

PySide.QtGui.QFileSystemModel.setFilter() QDir.Filters

PySide.QtGui.QFileSystemModel. iconProvider ( ) ¶

返回类型：	`PySide.QtGui.QFileIconProvider`

Returns the file icon provider for this directory model.

另请参阅

PySide.QtGui.QFileSystemModel.setIconProvider()

PySide.QtGui.QFileSystemModel. index ( path [ , column=0 ] ) ¶

参数：	path – unicode column – `PySide.QtCore.int`
返回类型：	`PySide.QtCore.QModelIndex`

这是重载函数。

Returns the model item index for the given path and column .

PySide.QtGui.QFileSystemModel. isDir ( index ) ¶

参数：	index – `PySide.QtCore.QModelIndex`
返回类型：	`PySide.QtCore.bool`

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

PySide.QtGui.QFileSystemModel. isReadOnly ( ) ¶

返回类型：	`PySide.QtCore.bool`

This property holds Whether the directory model allows writing to the file system.

If this property is set to false, the directory model will allow renaming, copying and deleting of files and directories.

This property is true by default

PySide.QtGui.QFileSystemModel. lastModified ( index ) ¶

参数：	index – `PySide.QtCore.QModelIndex`
返回类型：	`PySide.QtCore.QDateTime`

Returns the date and time when index was last modified.

PySide.QtGui.QFileSystemModel. mkdir ( parent , name ) ¶

参数：	parent – `PySide.QtCore.QModelIndex` name – unicode
返回类型：	`PySide.QtCore.QModelIndex`

Create a directory with the name 在 parent model index.

PySide.QtGui.QFileSystemModel. myComputer ( [ role=Qt.DisplayRole ] ) ¶

参数：	role – `PySide.QtCore.int`
返回类型：	object

Returns the data stored under the given role for the item “My Computer”.

另请参阅

Qt.ItemDataRole

PySide.QtGui.QFileSystemModel. nameFilterDisables ( ) ¶

返回类型：	`PySide.QtCore.bool`

This property holds Whether files that don't pass the name filter are hidden or disabled.

This property is true by default

PySide.QtGui.QFileSystemModel. nameFilters ( ) ¶

返回类型：	字符串列表

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

另请参阅

PySide.QtGui.QFileSystemModel.setNameFilters()

PySide.QtGui.QFileSystemModel. permissions ( index ) ¶

参数：	index – `PySide.QtCore.QModelIndex`
返回类型：	`PySide.QtCore.QFile.Permissions`

Returns the complete OR-ed together combination of QFile.Permission 为 index .

PySide.QtGui.QFileSystemModel. remove ( index ) ¶

参数：	index – `PySide.QtCore.QModelIndex`
返回类型：	`PySide.QtCore.bool`

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

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

PySide.QtGui.QFileSystemModel.rmdir()

PySide.QtGui.QFileSystemModel. resolveSymlinks ( ) ¶

返回类型：	`PySide.QtCore.bool`

This property holds Whether the directory model should resolve symbolic links.

This is only relevant on operating systems that support symbolic links.

默认情况下，此特性为 false。

PySide.QtGui.QFileSystemModel. rmdir ( index ) ¶

参数：	index – `PySide.QtCore.QModelIndex`
返回类型：	`PySide.QtCore.bool`

Removes the directory corresponding to the model item index in the file system 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

PySide.QtGui.QFileSystemModel.remove()

PySide.QtGui.QFileSystemModel. rootDirectory ( ) ¶

返回类型：	`PySide.QtCore.QDir`

The currently set directory

另请参阅

PySide.QtGui.QFileSystemModel.rootPath()

PySide.QtGui.QFileSystemModel. rootPath ( ) ¶

返回类型：	unicode

The currently set root path

另请参阅

PySide.QtGui.QFileSystemModel.setRootPath() PySide.QtGui.QFileSystemModel.rootDirectory()

PySide.QtGui.QFileSystemModel. rootPathChanged ( newPath ) ¶

参数：	newPath – unicode

PySide.QtGui.QFileSystemModel. setFilter ( filters ) ¶

参数：	filters – `PySide.QtCore.QDir.Filters`

PySide.QtGui.QFileSystemModel. setIconProvider ( provider ) ¶

参数：	provider – `PySide.QtGui.QFileIconProvider`

设置 provider of file icons for the directory model.

另请参阅

PySide.QtGui.QFileSystemModel.iconProvider()

PySide.QtGui.QFileSystemModel. setNameFilterDisables ( enable ) ¶

参数：	enable – `PySide.QtCore.bool`

This property holds Whether files that don't pass the name filter are hidden or disabled.

This property is true by default

PySide.QtGui.QFileSystemModel. setNameFilters ( filters ) ¶

参数：	filters – list of strings

Sets the name filters to apply against the existing files.

另请参阅

PySide.QtGui.QFileSystemModel.nameFilters()

PySide.QtGui.QFileSystemModel. setReadOnly ( enable ) ¶

参数：	enable – `PySide.QtCore.bool`

This property holds Whether the directory model allows writing to the file system.

If this property is set to false, the directory model will allow renaming, copying and deleting of files and directories.

This property is true by default

PySide.QtGui.QFileSystemModel. setResolveSymlinks ( enable ) ¶

参数：	enable – `PySide.QtCore.bool`

This property holds Whether the directory model should resolve symbolic links.

This is only relevant on operating systems that support symbolic links.

默认情况下，此特性为 false。

PySide.QtGui.QFileSystemModel. setRootPath ( path ) ¶

参数：	path – unicode
返回类型：	`PySide.QtCore.QModelIndex`

Sets the directory that is being watched by the model to newPath by installing a file system watcher on it. Any changes to files and directories within this directory will be reflected in the model.

If the path is changed, the PySide.QtGui.QFileSystemModel.rootPathChanged() signal will be emitted.

注意

This function does not change the structure of the model or modify the data available to views. In other words, the “root” of the model is not changed to include only files and directories within the directory specified by newPath in the file system.

另请参阅

PySide.QtGui.QFileSystemModel.rootPath()

PySide.QtGui.QFileSystemModel. size ( index ) ¶

参数：	index – `PySide.QtCore.QModelIndex`
返回类型：	`PySide.QtCore.qint64`

Returns the size in bytes of index . If the file does not exist, 0 is returned.

PySide.QtGui.QFileSystemModel. type ( index ) ¶

参数：	index – `PySide.QtCore.QModelIndex`
返回类型：	unicode

Returns the type of file index such as “Directory” or “JPEG file”.

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QFileSystemModel ¶

概要 ¶

函数 ¶

信号 ¶

详细描述 ¶

用法范例 ¶

缓存和性能 ¶