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KIO

KDirModel Class Reference

A model for a KIO-based directory tree. More...

#include <kdirmodel.h>

Inheritance diagram for KDirModel:
QAbstractItemModel

List of all members.

Public Types

enum  { ChildCountUnknown = -1 }
enum  AdditionalRoles { FileItemRole = 0x07A263FF, ChildCountRole = 0x2C4D0A40 }
enum  DropsAllowedFlag { NoDrops = 0, DropOnDirectory = 1, DropOnAnyFile = 2, DropOnLocalExecutable = 4 }
enum  ModelColumns {
  Name = 0, Size, ModifiedTime, Permissions,
  Owner, Group, Type, ColumnCount
}

Signals

void expand (const QModelIndex &index)
void needSequenceIcon (const QModelIndex &index, int sequenceIndex)

Public Member Functions

virtual bool canFetchMore (const QModelIndex &parent) const
virtual int columnCount (const QModelIndex &parent=QModelIndex()) const
virtual QVariant data (const QModelIndex &index, int role=Qt::DisplayRole) const
KDirLister * dirLister () const
virtual bool dropMimeData (const QMimeData *data, Qt::DropAction action, int row, int column, const QModelIndex &parent)
void expandToUrl (const KUrl &url)
virtual void fetchMore (const QModelIndex &parent)
virtual Qt::ItemFlags flags (const QModelIndex &index) const
virtual bool hasChildren (const QModelIndex &parent=QModelIndex()) const
virtual QVariant headerData (int section, Qt::Orientation orientation, int role=Qt::DisplayRole) const
virtual QModelIndex index (int row, int column, const QModelIndex &parent=QModelIndex()) const
QModelIndex indexForItem (const KFileItem &) const
KDE_DEPRECATED QModelIndex indexForItem (const KFileItem *) const
QModelIndex indexForUrl (const KUrl &url) const
void itemChanged (const QModelIndex &index)
KFileItem itemForIndex (const QModelIndex &index) const
 KDirModel (QObject *parent=0)
virtual QMimeData * mimeData (const QModelIndexList &indexes) const
virtual QStringList mimeTypes () const
virtual QModelIndex parent (const QModelIndex &index) const
void requestSequenceIcon (const QModelIndex &index, int sequenceIndex)
virtual int rowCount (const QModelIndex &parent=QModelIndex()) const
virtual bool setData (const QModelIndex &index, const QVariant &value, int role=Qt::EditRole)
void setDirLister (KDirLister *dirLister)
void setDropsAllowed (DropsAllowed dropsAllowed)
virtual void sort (int column, Qt::SortOrder order=Qt::AscendingOrder)
 ~KDirModel ()

Static Public Member Functions

static KUrl::List simplifiedUrlList (const KUrl::List &urls)

Detailed Description

A model for a KIO-based directory tree.

KDirModel implements the QAbstractItemModel interface (for use with Qt's model/view widgets) around the directory listing for one directory or a tree of directories.

Note that there are some cases when using QPersistentModelIndexes from this model will not give expected results. QPersistentIndexes will remain valid and updated if its siblings are added or removed. However, if the QPersistentIndex or one of its ancestors is moved, the QPersistentIndex will become invalid. For example, if a file or directory is renamed after storing a QPersistentModelIndex for it, the index (along with any stored children) will become invalid even though it is still in the model. The reason for this is that moves of files and directories are treated as separate insert and remove actions.

See also:
KDirSortFilterProxyModel
Author:
David Faure Based on work by Hamish Rodda and Pascal Letourneau

Definition at line 47 of file kdirmodel.h.


Member Enumeration Documentation

anonymous enum

Possible return value for data(ChildCountRole), meaning the item isn't a directory, or we haven't calculated its child count yet.

Enumerator:
ChildCountUnknown 

Definition at line 129 of file kdirmodel.h.

enum KDirModel::AdditionalRoles
Enumerator:
FileItemRole 

returns the KFileItem for a given index

ChildCountRole 

returns the number of items in a directory, or ChildCountUnknown

Definition at line 131 of file kdirmodel.h.

enum KDirModel::DropsAllowedFlag
Enumerator:
NoDrops 
DropOnDirectory 

allow drops on any directory

DropOnAnyFile 

allow drops on any file

DropOnLocalExecutable 

allow drops on local executables, shell scripts and desktop files. Can be used with DropOnDirectory.

Definition at line 138 of file kdirmodel.h.

enum KDirModel::ModelColumns
Enumerator:
Name 
Size 
ModifiedTime 
Permissions 
Owner 
Group 
Type 
ColumnCount 

Definition at line 116 of file kdirmodel.h.


Constructor & Destructor Documentation

KDirModel::KDirModel ( QObject *  parent = 0  )  [explicit]
Parameters:
parent parent qobject

Definition at line 321 of file kdirmodel.cpp.

KDirModel::~KDirModel (  ) 

Definition at line 328 of file kdirmodel.cpp.


Member Function Documentation

bool KDirModel::canFetchMore ( const QModelIndex &  parent  )  const [virtual]

Reimplemented from QAbstractItemModel. Returns true for empty directories.

Definition at line 1022 of file kdirmodel.cpp.

int KDirModel::columnCount ( const QModelIndex &  parent = QModelIndex()  )  const [virtual]

Reimplemented from QAbstractItemModel. Returns ColumnCount.

Definition at line 626 of file kdirmodel.cpp.

QVariant KDirModel::data ( const QModelIndex &  index,
int  role = Qt::DisplayRole 
) const [virtual]

Reimplemented from QAbstractItemModel.

Definition at line 631 of file kdirmodel.cpp.

KDirLister * KDirModel::dirLister (  )  const

Return the directory lister used by this model.

Definition at line 353 of file kdirmodel.cpp.

bool KDirModel::dropMimeData ( const QMimeData *  data,
Qt::DropAction  action,
int  row,
int  column,
const QModelIndex &  parent 
) [virtual]

Reimplemented from QAbstractItemModel. Not implemented yet.

Definition at line 1057 of file kdirmodel.cpp.

void KDirModel::expand ( const QModelIndex &  index  )  [signal]

Emitted for each subdirectory that is a parent of a url passed to expandToUrl This allows to asynchronously open a tree view down to a given directory.

Also emitted for the final file, if expandToUrl is called with a file (for instance so that it can be selected).

void KDirModel::expandToUrl ( const KUrl &  url  ) 

Lists subdirectories using fetchMore() as needed until the given url exists in the model.

When the model is used by a treeview, call KDirLister::openUrl with the base url of the tree, then the treeview will take care of calling fetchMore() when the user opens directories. However if you want the tree to show a given URL (i.e. open the tree recursively until that URL), call expandToUrl(). Note that this is asynchronous; the necessary listing of subdirectories will take time so the model will not immediately have this url available. The model emits the signal expand() when an index has become available; this can be connected to the treeview in order to let it open that index.

Parameters:
url the url of a subdirectory of the directory model (or a file in a subdirectory)

Definition at line 1074 of file kdirmodel.cpp.

void KDirModel::fetchMore ( const QModelIndex &  parent  )  [virtual]

Reimplemented from QAbstractItemModel. Lists the subdirectory.

Definition at line 1038 of file kdirmodel.cpp.

Qt::ItemFlags KDirModel::flags ( const QModelIndex &  index  )  const [virtual]

Reimplemented from QAbstractItemModel.

Definition at line 981 of file kdirmodel.cpp.

bool KDirModel::hasChildren ( const QModelIndex &  parent = QModelIndex()  )  const [virtual]

Reimplemented from QAbstractItemModel. Returns true for directories.

Definition at line 971 of file kdirmodel.cpp.

QVariant KDirModel::headerData ( int  section,
Qt::Orientation  orientation,
int  role = Qt::DisplayRole 
) const [virtual]

Reimplemented from QAbstractItemModel. Returns the column titles.

Definition at line 945 of file kdirmodel.cpp.

QModelIndex KDirModel::index ( int  row,
int  column,
const QModelIndex &  parent = QModelIndex() 
) const [virtual]

Reimplemented from QAbstractItemModel. O(1).

Definition at line 933 of file kdirmodel.cpp.

QModelIndex KDirModel::indexForItem ( const KFileItem &  item  )  const

Return the index for a given kfileitem.

This can be slow.

Definition at line 915 of file kdirmodel.cpp.

QModelIndex KDirModel::indexForItem ( const KFileItem *  item  )  const

Return the index for a given kfileitem.

This can be slow.

Deprecated:
use the method that takes a KFileItem by value

Definition at line 908 of file kdirmodel.cpp.

QModelIndex KDirModel::indexForUrl ( const KUrl &  url  )  const

Return the index for a given url.

This can be slow.

Definition at line 923 of file kdirmodel.cpp.

void KDirModel::itemChanged ( const QModelIndex &  index  ) 

Notify the model that the item at this index has changed.

For instance because KMimeTypeResolver called determineMimeType on it. This makes the model emit its dataChanged signal at this index, so that views repaint. Note that for most things (renaming, changing size etc.), KDirLister's signals tell the model already.

Definition at line 611 of file kdirmodel.cpp.

KFileItem KDirModel::itemForIndex ( const QModelIndex &  index  )  const

Return the fileitem for a given index.

This is O(1), i.e. fast.

Definition at line 899 of file kdirmodel.cpp.

QMimeData * KDirModel::mimeData ( const QModelIndexList &  indexes  )  const [virtual]

Reimplemented from QAbstractItemModel.

Definition at line 863 of file kdirmodel.cpp.

QStringList KDirModel::mimeTypes (  )  const [virtual]

Reimplemented from QAbstractItemModel.

Definition at line 858 of file kdirmodel.cpp.

void KDirModel::needSequenceIcon ( const QModelIndex &  index,
int  sequenceIndex 
) [signal]

Emitted when another icon sequence index is requested.

Parameters:
index Index of the item that should get another icon
sequenceIndex Index in the sequence. If it is zero, the standard icon should be assigned. For higher indices, arbitrary different meaningful icons should be generated. This is usually slowly counted up while the user hovers the icon. If no meaningful alternative icons can be generated, this should be ignored.
Since:
4.3
QModelIndex KDirModel::parent ( const QModelIndex &  index  )  const [virtual]

Reimplemented from QAbstractItemModel.

Definition at line 814 of file kdirmodel.cpp.

void KDirModel::requestSequenceIcon ( const QModelIndex &  index,
int  sequenceIndex 
)

This emits the needSequenceIcon signal, requesting another sequence icon.

If there is a KFilePreviewGenerator attached to this model, that generator will care about creating another preview.

Parameters:
index Index of the item that should get another icon
sequenceIndex Index in the sequence. If it is zero, the standard icon will be assigned. For higher indices, arbitrary different meaningful icons will be generated.
Since:
4.3

Definition at line 830 of file kdirmodel.cpp.

int KDirModel::rowCount ( const QModelIndex &  parent = QModelIndex()  )  const [virtual]

Reimplemented from QAbstractItemModel.

Definition at line 794 of file kdirmodel.cpp.

bool KDirModel::setData ( const QModelIndex &  index,
const QVariant &  value,
int  role = Qt::EditRole 
) [virtual]

Reimplemented from QAbstractItemModel.

Call this to set a new icon, e.g. a preview

Definition at line 751 of file kdirmodel.cpp.

void KDirModel::setDirLister ( KDirLister *  dirLister  ) 

Set the directory lister to use by this model, instead of the default KDirLister created internally.

The model takes ownership.

Definition at line 333 of file kdirmodel.cpp.

void KDirModel::setDropsAllowed ( DropsAllowed  dropsAllowed  ) 

Set whether dropping onto items should be allowed, and for which kind of item Drops are disabled by default.

Definition at line 1069 of file kdirmodel.cpp.

KUrl::List KDirModel::simplifiedUrlList ( const KUrl::List &  urls  )  [static]

Remove urls from the list if an ancestor is present on the list.

This can be used to delete only the ancestor url and skip a potential error of a non-existent url.

For example, for a list of "/home/foo/a", "/home/foo/a/a.txt", "/home/foo/a/a/a.txt", "/home/foo/a/b/b.txt", "home/foo/b/b.txt", this method will return the list "/home/foo/a", "/home/foo/b/b.txt".

Returns:
the list urls without parented urls inside.
Since:
4.2

Definition at line 834 of file kdirmodel.cpp.

void KDirModel::sort ( int  column,
Qt::SortOrder  order = Qt::AscendingOrder 
) [virtual]

Reimplemented from QAbstractItemModel. Not implemented.

See also:
KDirSortFilterProxyModel

Definition at line 745 of file kdirmodel.cpp.


The documentation for this class was generated from the following files:
  • kdirmodel.h
  • kdirmodel.cpp

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