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/* This file is part of the KDE project
Copyright (C) 2000 David Faure <faure@kde.org>
2000 Carsten Pfeiffer <pfeiffer@kde.org>
2001 Klaas Freitag <freitag@suse.de>
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Library General Public
License version 2 as published by the Free Software Foundation.
This library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Library General Public License for more details.
You should have received a copy of the GNU Library General Public License
along with this library; see the file COPYING.LIB. If not, write to
the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
Boston, MA 02110-1301, USA.
*/
#ifndef kfile_tree_branch_h
#define kfile_tree_branch_h
#include <tqdict.h>
#include <tqlistview.h>
#include <kfileitem.h>
#include <kio/global.h>
#include <kdirlister.h>
#include <kio/job.h>
#include <kfiletreeviewitem.h>
class KURL;
class KFileTreeView;
/**
* This is the branch class of the KFileTreeView, which represents one
* branch in the treeview. Every branch has a root which is an url. The branch
* lists the files under the root. Every branch uses its own dirlister and can
* have its own filter etc.
*
* @short Branch object for KFileTreeView object.
*
*/
class KIO_EXPORT KFileTreeBranch : public KDirLister
{
Q_OBJECT
public:
/**
* constructs a branch for KFileTreeView. Does not yet start to list it.
* @param url start url of the branch.
* @param name the name of the branch, which is displayed in the first column of the treeview.
* @param pix is a pixmap to display as an icon of the branch.
* @param showHidden flag to make hidden files visible or not.
* @param branchRoot is the KFileTreeViewItem to use as the root of the
* branch, with the default 0 meaning to let KFileTreeBranch create
* it for you.
*/
KFileTreeBranch( KFileTreeView*, const KURL& url, const TQString& name,
const TQPixmap& pix, bool showHidden = false,
KFileTreeViewItem *branchRoot = 0 );
/**
* @returns the root url of the branch.
*/
KURL rootUrl() const { return( m_startURL ); }
/**
* sets a KFileTreeViewItem as root widget for the branch.
* That must be created outside of the branch. All KFileTreeViewItems
* the branch is allocating will become children of that object.
* @param r the KFileTreeViewItem to become the root item.
*/
virtual void setRoot( KFileTreeViewItem *r ){ m_root = r; };
/**
* @returns the root item.
*/
KFileTreeViewItem *root( ) { return( m_root );}
/**
* @returns the name of the branch.
*/
TQString name() const { return( m_name ); }
/**
* sets the name of the branch.
*/
virtual void setName( const TQString n ) { m_name = n; };
/*
* returns the current root item pixmap set in the constructor. The root
* item pixmap defaults to the icon for directories.
* @see openPixmap()
*/
const TQPixmap& pixmap(){ return(m_rootIcon); }
/*
* returns the current root item pixmap set by setOpenPixmap()
* which is displayed if the branch is expanded.
* The root item pixmap defaults to the icon for directories.
* @see pixmap()
* Note that it depends on KFileTreeView::showFolderOpenPximap weather
* open pixmap are displayed or not.
*/
const TQPixmap& openPixmap() { return(m_openRootIcon); }
/**
* @returns whether the items in the branch show their file extensions in the
* tree or not. See setShowExtensions for more information.
*/
bool showExtensions( ) const;
/**
* sets the root of the branch open or closed.
*/
void setOpen( bool setopen = true )
{ if( root() ) root()->setOpen( setopen ); }
/**
* sets if children recursion is wanted or not. If this is switched off, the
* child directories of a just opened directory are not listed internally.
* That means that it can not be determined if the sub directories are
* expandable or not. If this is switched off there will be no call to
* setExpandable.
* @param t set to true to switch on child recursion
*/
void setChildRecurse( bool t=true );
/**
* @returns if child recursion is on or off.
* @see setChildRecurse
*/
bool childRecurse()
{ return m_recurseChildren; }
public slots:
/**
* populates a branch. This method must be called after a branch was added
* to a KFileTreeView using method addBranch.
* @param url is the url of the root item where the branch starts.
* @param currItem is the current parent.
*/
virtual bool populate( const KURL &url, KFileTreeViewItem* currItem );
/**
* sets printing of the file extensions on or off. If you pass false to this
* slot, all items of this branch will not show their file extensions in the
* tree.
* @param visible flags if the extensions should be visible or not.
*/
virtual void setShowExtensions( bool visible = true );
void setOpenPixmap( const TQPixmap& pix );
protected:
/**
* allocates a KFileTreeViewItem for the branch
* for new items.
*/
virtual KFileTreeViewItem *createTreeViewItem( KFileTreeViewItem *parent,
KFileItem *fileItem );
public:
/**
* find the according KFileTreeViewItem by an url
*/
virtual KFileTreeViewItem *findTVIByURL( const KURL& );
signals:
/**
* emitted with the item of a directory which was finished to populate
*/
void populateFinished( KFileTreeViewItem * );
/**
* emitted with a list of new or updated KFileTreeViewItem which were
* found in a branch. Note that this signal is emitted very often and may slow
* down the performance of the treeview !
*/
void newTreeViewItems( KFileTreeBranch*, const KFileTreeViewItemList& );
/**
* emitted with the exact count of children for a directory.
*/
void directoryChildCount( KFileTreeViewItem* item, int count );
private slots:
void slotRefreshItems( const KFileItemList& );
void addItems( const KFileItemList& );
void slCompleted( const KURL& );
void slotCanceled( const KURL& );
void slotListerStarted( const KURL& );
void slotDeleteItem( KFileItem* );
void slotDirlisterClear();
void slotDirlisterClearURL( const KURL& url );
void slotRedirect( const KURL& oldUrl, const KURL&newUrl );
private:
KFileTreeViewItem *parentKFTVItem( KFileItem *item );
static void deleteChildrenOf( TQListViewItem *parent );
KFileTreeViewItem *m_root;
KURL m_startURL;
TQString m_name;
TQPixmap m_rootIcon;
TQPixmap m_openRootIcon;
/* this list holds the url's which children are opened. */
KURL::List m_openChildrenURLs;
/* The next two members are used for caching purposes in findTVIByURL. */
KURL m_lastFoundURL;
KFileTreeViewItem *m_lastFoundItem;
bool m_recurseChildren :1;
bool m_showExtensions :1;
protected:
virtual void virtual_hook( int id, void* data );
private:
class KFileTreeBranchPrivate;
KFileTreeBranchPrivate *d;
};
/**
* List of KFileTreeBranches
*/
typedef TQPtrList<KFileTreeBranch> KFileTreeBranchList;
/**
* Iterator for KFileTreeBranchLists
*/
typedef TQPtrListIterator<KFileTreeBranch> KFileTreeBranchIterator;
#endif
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