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The QDirModel class provides a data model for the local filesystem. More...
#include <QDirModel>
Inherits QAbstractItemModel.
The QDirModel class provides a data model for the local filesystem.
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 does not store file information internally or cache file data.
A directory model that displays the contents of a default directory is usually constructed with a parent object:
QDirModel *model = new QDirModel;
A tree view can be used to display the contents of the model
QTreeView *tree = new QTreeView(splitter); 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. QDirModel provides a convenience function that returns a suitable model index for a path to a directory within the model.
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(), 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 mkdir(), rmdir(), and the model will be automatically updated to take the changes into account.
See also nameFilters(), setFilter(), filter(), Model/View Programming, QListView, and QTreeView.
Constant | Value |
---|---|
QDirModel::FileIconRole | Qt::DecorationRole |
QDirModel::FilePathRole | Qt::UserRole + 1 |
QDirModel::FileNameRole |
This property holds whether the directory model optimizes the hasChildren function to only check if the item is a directory.
If this property is set to true, the directory model will make sure that a directory actually containes any files before reporting that it has children. Otherwise the directory model will report that an item has children if the item is a directory.
This property is false by default
Access functions:
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
Access functions:
This property holds whether the directory model should resolve symbolic links.
This is only relevant on operating systems that support symbolic links.
Access functions:
Constructs a new directory model with the given parent. Only those files matching the nameFilters and the filters are included in the model. The sort order is given by the sort flags.
Constructs a directory model with the given parent.
Destroys this directory model.
Returns the number of columns in the parent model item.
Reimplemented from QAbstractItemModel.
Returns the data for the model item index with the given role.
Reimplemented from QAbstractItemModel.
See also setData().
Handles the 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.
Reimplemented from QAbstractItemModel.
See also supportedDropActions().
Returns the icons for the item stored in the model under the given index.
Returns the file information for the model item index.
Returns the name of the item stored in the model under the index given.
Returns the path of the item stored in the model under the index given.
Returns the filter specification for the directory model.
See also setFilter() and QDir::Filters.
Returns the item flags for the given index in the model.
Reimplemented from QAbstractItemModel.
See also Qt::ItemFlags.
Returns true if the parent model item has children; otherwise returns false.
Reimplemented from QAbstractItemModel.
Returns the data stored under the given role for the specified section of the header with the given orientation.
Reimplemented from QAbstractItemModel.
Returns the file icon provider for this directory model.
See also setIconProvider().
Returns the model item index for the item in the parent with the given row and column.
Reimplemented from QAbstractItemModel.
This is an overloaded member function, provided for convenience. It behaves essentially like the above function.
Returns the model item index for the given path.
Returns true if the model item index represents a directory; otherwise returns false.
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() function.
If the list of indexes is empty, 0 is returned rather than a serialized empty list.
Reimplemented from QAbstractItemModel.
Returns a list of MIME types that can be used to describe a list of items in the model.
Reimplemented from QAbstractItemModel.
Create a directory with the name in the parent model item.
Returns a list of filters applied to the names in the model.
See also setNameFilters().
Return the parent of the given child model item.
Reimplemented from QAbstractItemModel.
Refreshes (rereads) the children of parent.
Removes the model item index from the directory model, returning true if successful. If the item cannot be removed, false is returned.
Removes the directory corresponding to the model item index in the directory model, returning true if successful. If the directory cannot be removed, false is returned.
Returns the number of rows in the parent model item.
Reimplemented from QAbstractItemModel.
Sets the data for the model item index with the given role to the data referenced by the value. Returns true if successful; otherwise returns false.
Reimplemented from QAbstractItemModel.
See also data().
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.
See also filter() and QDir::Filters.
Sets the provider of file icons for the directory model.
See also iconProvider().
Sets the name filters for the directory model.
See also nameFilters().
Sets the directory model's sorting order to that specified by sort.
See also sorting() and QDir::SortFlags.
Sort the model items in the column using the order given. The order is a value defined in Qt::SortOrder.
Reimplemented from QAbstractItemModel.
Returns the sorting method used for the directory model.
See also setSorting() and QDir::SortFlags.
Returns the drop actions supported by this model.
Reimplemented from QAbstractItemModel.
See also Qt::DropActions.
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