/*
 *   File name:	kdirstatapp.cpp
 *   Summary:	The KDirStat application - menu bar, tool bar, ...
 *   License:	GPL - See file COPYING for details.
 *
 *   Author:	Stefan Hundhammer <sh@suse.de>
 *		Parts auto-generated by KDevelop
 *
 *   Updated:	2004-12-06
 */


#include <tqclipboard.h>
#include <tqpopupmenu.h>
#include <tqsplitter.h>

#include <tdeaccel.h>
#include <tdeaction.h>
#include <tdeapplication.h>
#include <tdeconfig.h>
#include <tdefiledialog.h>
#include <kiconloader.h>
#include <tdelocale.h>
#include <tdemenubar.h>
#include <tdemessagebox.h>
#include <krun.h>
#include <kstatusbar.h>
#include <kstdaction.h>
#include <kurlrequesterdlg.h>

#include "kdirstatapp.h"
#include "kcleanupcollection.h"
#include "kdirtree.h"
#include "kpacman.h"
#include "ktreemapview.h"
#include "ktreemaptile.h"
#include "kcleanupcollection.h"
#include "kactivitytracker.h"
#include "kdirtreeview.h"
#include "kdirstatsettings.h"


#define	USER_CLEANUPS	10	// Number of user cleanup actions

#define ID_STATUS_MSG	1
#define ID_PACMAN	42
#define PACMAN_WIDTH	350
#define PACMAN_INTERVAL	75	// millisec

#define INITIAL_FEEDBACK_REMINDER	2000L
#define FEEDBACK_REMINDER_INTERVAL	1000L


using namespace KDirStat;


KDirStatApp::KDirStatApp( TQWidget* , const char* name )
    : TDEMainWindow( 0, name )
{
    // Simple inits

    _activityTracker	= 0;	// Might or might not be needed


    // Those will be created delayed, only when needed

    _settingsDialog 	= 0;
    _feedbackDialog 	= 0;
    _treemapView	= 0;
    _pacMan		= 0;
    _pacManDelimiter	= 0;


    // Set up internal (mainWin -> mainWin) connections

    connect( this,	TQ_SIGNAL( readConfig       ( void ) ),
	     this,	TQ_SLOT  ( readMainWinConfig( void ) ) );

    connect( this,	TQ_SIGNAL( saveConfig       ( void ) ),
	     this,	TQ_SLOT  ( saveMainWinConfig( void ) ) );


    // Create main window

    _splitter = new TQSplitter( TQt::Vertical, this );
    setCentralWidget( _splitter );

    _treeView = new KDirTreeView( _splitter );

    connect( _treeView, TQ_SIGNAL( progressInfo( const TQString & ) ),
	     this,      TQ_SLOT  ( statusMsg   ( const TQString & ) ) );

    connect( _treeView, TQ_SIGNAL( selectionChanged( KFileInfo * ) ),
	     this,      TQ_SLOT  ( selectionChanged( KFileInfo * ) ) );

    connect( _treeView, TQ_SIGNAL( contextMenu( KDirTreeViewItem *, const TQPoint & ) ),
	     this,      TQ_SLOT  ( contextMenu( KDirTreeViewItem *, const TQPoint & ) ) );

    connect( this,	TQ_SIGNAL( readConfig() 		), _treeView,	TQ_SLOT  ( readConfig() ) );
    connect( this,	TQ_SIGNAL( saveConfig() 		), _treeView,	TQ_SLOT  ( saveConfig() ) );

    connect( _treeView, TQ_SIGNAL( finished()		), this, TQ_SLOT( createTreemapView() ) );
    connect( _treeView, TQ_SIGNAL( aborted()		), this, TQ_SLOT( createTreemapView() ) );
    connect( _treeView, TQ_SIGNAL( startingReading()	), this, TQ_SLOT( deleteTreemapView() ) );

    connect( _treeView, TQ_SIGNAL( startingReading()	), this, TQ_SLOT( updateActions() ) );
    connect( _treeView, TQ_SIGNAL( finished()        	), this, TQ_SLOT( updateActions() ) );
    connect( _treeView, TQ_SIGNAL( aborted()         	), this, TQ_SLOT( updateActions() ) );

    // Call inits to invoke all other construction parts

    initStatusBar();
    initActions();
    initCleanups();
    createGUI();
    initActivityTracker();

    _treeViewContextMenu = (TQPopupMenu *) factory()->container( "treeViewContextMenu", this );
    _treemapContextMenu	 = (TQPopupMenu *) factory()->container( "treemapContextMenu",  this );

    readMainWinConfig();


    // Disable certain actions at startup

    _editCopy->setEnabled( false );
    _reportMailToOwner->setEnabled( false );
    _fileRefreshAll->setEnabled( false );
    _fileRefreshSelected->setEnabled( false );
    updateActions();
}


KDirStatApp::~KDirStatApp()
{
    delete _cleanupCollection;
}



void
KDirStatApp::initActions()
{
    _fileAskOpenDir	= KStdAction::open		( this, TQ_SLOT( fileAskOpenDir() ), 		actionCollection() );

    _fileAskOpenUrl	= new TDEAction( i18n( "Open &URL..." ), "konqueror", 0,
				       this, TQ_SLOT( fileAskOpenUrl() ),
				       actionCollection(), "file_open_url" );

    _fileOpenRecent	= KStdAction::openRecent	( this, TQ_SLOT( fileOpenRecent( const KURL& ) ),	actionCollection() );
    _fileCloseDir	= KStdAction::close		( this, TQ_SLOT( fileCloseDir() ), 		actionCollection() );

    _fileRefreshAll		= new TDEAction( i18n( "Refresh &All" ), "reload", 0,
					       this, TQ_SLOT( refreshAll() ),
					       actionCollection(), "file_refresh_all" );

    _fileRefreshSelected	= new TDEAction( i18n( "Refresh &Selected" ), 0,
					       this, TQ_SLOT( refreshSelected() ),
					       actionCollection(), "file_refresh_selected" );

    _fileContinueReadingAtMountPoint = new TDEAction( i18n( "Continue Reading at &Mount Point" ), "drive-harddisk-mounted", 0,
						    this, TQ_SLOT( refreshSelected() ), actionCollection(),
						    "file_continue_reading_at_mount_point" );

    _fileStopReading	= new TDEAction( i18n( "Stop Rea&ding" ), "process-stop", 0,
				       this, TQ_SLOT( stopReading() ), actionCollection(),
				       "file_stop_reading" );

    _fileQuit		= KStdAction::quit		( kapp, TQ_SLOT( quit()  		), actionCollection() );
    _editCopy		= KStdAction::copy		( this, TQ_SLOT( editCopy() 		), actionCollection() );
    _showToolBar	= KStdAction::showToolbar	( this, TQ_SLOT( toggleToolBar()		), actionCollection() );
    _showStatusBar	= KStdAction::showStatusbar	( this, TQ_SLOT( toggleStatusBar()	), actionCollection() );

    _cleanupOpenWith	= new TDEAction( i18n( "Open With" ), 0,
				       this, TQ_SLOT( cleanupOpenWith() ),
				       actionCollection(), "cleanup_open_with" );

    _treemapZoomIn 	= new TDEAction( i18n( "Zoom in" ), "zoom-in", Key_Plus,
				       this, TQ_SLOT( treemapZoomIn() ),
				       actionCollection(), "treemap_zoom_in" );

    _treemapZoomOut 	= new TDEAction( i18n( "Zoom out" ), "zoom-out", Key_Minus,
				       this, TQ_SLOT( treemapZoomOut() ),
				       actionCollection(), "treemap_zoom_out" );

    _treemapSelectParent= new TDEAction( i18n( "Select Parent" ), "go-up", Key_Asterisk,
				       this, TQ_SLOT( treemapSelectParent() ),
				       actionCollection(), "treemap_select_parent" );

    _treemapRebuild 	= new TDEAction( i18n( "Rebuild Treemap" ), 0,
				       this, TQ_SLOT( treemapRebuild() ),
				       actionCollection(), "treemap_rebuild" );

    _showTreemapView	= new TDEToggleAction( i18n( "Show Treemap" ), Key_F9,
					     this, TQ_SLOT( toggleTreemapView() ),
					     actionCollection(), "options_show_treemap" );

    new TDEAction( i18n( "Help about Treemaps" ), "help", 0,
		 this, TQ_SLOT( treemapHelp() ),
		 actionCollection(), "treemap_help" );

    TDEAction * pref	= KStdAction::preferences( this, TQ_SLOT( preferences()	), actionCollection() );

    _reportMailToOwner	= new TDEAction( i18n( "Send &Mail to Owner" ), "mail_generic", 0,
				       _treeView, TQ_SLOT( sendMailToOwner() ),
				       actionCollection(), "report_mail_to_owner" );

    _helpSendFeedbackMail = new TDEAction( i18n( "Send &Feedback Mail..." ), 0,
					 this, TQ_SLOT( sendFeedbackMail() ),
					 actionCollection(), "help_send_feedback_mail" );


    _fileAskOpenDir->setStatusText	( i18n( "Opens a directory"	 		) );
    _fileAskOpenUrl->setStatusText	( i18n( "Opens a (possibly remote) directory"	) );
    _fileOpenRecent->setStatusText	( i18n( "Opens a recently used directory"	) );
    _fileCloseDir->setStatusText	( i18n( "Closes the current directory" 		) );
    _fileRefreshAll->setStatusText	( i18n( "Re-reads the entire directory tree"	) );
    _fileRefreshSelected->setStatusText	( i18n( "Re-reads the selected subtree"		) );
    _fileContinueReadingAtMountPoint->setStatusText( i18n( "Scan mounted file systems"	) );
    _fileStopReading->setStatusText	( i18n( "Stops directory reading"		) );
    _fileQuit->setStatusText		( i18n( "Quits the application" 		) );
    _editCopy->setStatusText		( i18n( "Copies the URL of the selected item to the clipboard" ) );
    _showToolBar->setStatusText		( i18n( "Enables/disables the toolbar" 		) );
    _showStatusBar->setStatusText	( i18n( "Enables/disables the statusbar" 	) );
    _cleanupOpenWith->setStatusText	( i18n( "Open file or directory with arbitrary application" ) );
    _showTreemapView->setStatusText	( i18n( "Enables/disables the treemap view" 	) );
    _treemapZoomIn->setStatusText	( i18n( "Zoom treemap in"		 	) );
    _treemapZoomOut->setStatusText	( i18n( "Zoom treemap out"		 	) );
    _treemapSelectParent->setStatusText	( i18n( "Select parent"			 	) );
    _treemapRebuild->setStatusText	( i18n( "Rebuild treemap to fit into available space" ) );
    pref->setStatusText			( i18n( "Opens the preferences dialog"		) );
    _reportMailToOwner->setStatusText	( i18n( "Sends a mail to the owner of the selected subtree" ) );
}


void
KDirStatApp::initCleanups()
{
    _cleanupCollection = new KCleanupCollection( actionCollection() );
    TQ_CHECK_PTR( _cleanupCollection );
    _cleanupCollection->addStdCleanups();
    _cleanupCollection->addUserCleanups( USER_CLEANUPS );
    _cleanupCollection->slotReadConfig();

    connect( _treeView,          TQ_SIGNAL( selectionChanged( KFileInfo * ) ),
	     _cleanupCollection, TQ_SIGNAL( selectionChanged( KFileInfo * ) ) );

    connect( this,               TQ_SIGNAL( readConfig( void ) ),
	     _cleanupCollection, TQ_SIGNAL( readConfig( void ) ) );

    connect( this,               TQ_SIGNAL( saveConfig( void ) ),
	     _cleanupCollection, TQ_SIGNAL( saveConfig( void ) ) );
}


void
KDirStatApp::revertCleanupsToDefaults()
{
    KCleanupCollection defaultCollection;
    defaultCollection.addStdCleanups();
    defaultCollection.addUserCleanups( USER_CLEANUPS );
    *_cleanupCollection = defaultCollection;
}


void
KDirStatApp::initPacMan( bool enablePacMan )
{
    if ( enablePacMan )
    {
	if ( ! _pacMan )
	{
	    _pacMan = new KPacMan( toolBar(), 16, false, "tde toolbar widget" );
	    _pacMan->setInterval( PACMAN_INTERVAL );	// millisec
	    int id = ID_PACMAN;
	    toolBar()->insertWidget( id, PACMAN_WIDTH, _pacMan );
	    toolBar()->setItemAutoSized( id, false );

	    _pacManDelimiter = new TQWidget( toolBar() );
	    toolBar()->insertWidget( ++id, 1, _pacManDelimiter );

	    connect( _treeView, TQ_SIGNAL( startingReading() ), _pacMan, TQ_SLOT( start() ) );
	    connect( _treeView, TQ_SIGNAL( finished()        ), _pacMan, TQ_SLOT( stop () ) );
	    connect( _treeView, TQ_SIGNAL( aborted()         ), _pacMan, TQ_SLOT( stop () ) );
	}
    }
    else
    {
	if ( _pacMan )
	{
	    delete _pacMan;
	    _pacMan = 0;
	}

	if ( _pacManDelimiter )
	{
	    delete _pacManDelimiter;
	    _pacManDelimiter = 0;
	}
    }
}


void
KDirStatApp::initStatusBar()
{
    statusBar()->insertItem( i18n( "Ready." ), ID_STATUS_MSG );
}


void
KDirStatApp::initActivityTracker()
{
    if ( ! doFeedbackReminder() )
	return;

    _activityTracker = new KActivityTracker( this, "Feedback",
					     INITIAL_FEEDBACK_REMINDER );

    connect( _activityTracker,  TQ_SIGNAL( thresholdReached() ),
	     this,		TQ_SLOT  ( askForFeedback() ) );

    connect( _treeView,		TQ_SIGNAL( userActivity( int ) ),
	     _activityTracker,	TQ_SLOT  ( trackActivity( int ) ) );

    connect( _cleanupCollection, TQ_SIGNAL( userActivity( int ) ),
	     _activityTracker,   TQ_SLOT  ( trackActivity( int ) ) );
}


void
KDirStatApp::openURL( const KURL& url )
{
    statusMsg( i18n( "Opening directory..." ) );

    _treeView->openURL( url );
    _fileOpenRecent->addURL( url );
    _fileRefreshAll->setEnabled( true );
    setCaption( url.fileName(), false );

    statusMsg( i18n( "Ready." ) );
}


void KDirStatApp::readMainWinConfig()
{

    TDEConfig * config = kapp->config();
    config->setGroup( "General Options" );

    // Status settings of the various bars and views

    _showToolBar->setChecked( config->readBoolEntry( "Show Toolbar", true ) );
    toggleToolBar();

    _showStatusBar->setChecked( config->readBoolEntry( "Show Statusbar", true ) );
    toggleStatusBar();

    _showTreemapView->setChecked( config->readBoolEntry( "Show Treemap", true ) );
    toggleTreemapView();


    // Position settings of the various bars

    TDEToolBar::BarPosition toolBarPos;
    toolBarPos = ( TDEToolBar::BarPosition ) config->readNumEntry( "ToolBarPos", TDEToolBar::Top );
    toolBar( "mainToolBar" )->setBarPos( toolBarPos );

    _treemapViewHeight = config->readNumEntry( "TreemapViewHeight", 250 );

    // initialize the recent file list
    _fileOpenRecent->loadEntries( config,"Recent Files" );

    TQSize size = config->readSizeEntry( "Geometry" );

    if( ! size.isEmpty() )
	resize( size );

    config->setGroup( "Animation" );
    initPacMan( config->readBoolEntry( "ToolbarPacMan", true ) );
    _treeView->enablePacManAnimation( config->readBoolEntry( "DirTreePacMan", false ) );
}


void
KDirStatApp::saveMainWinConfig()
{
    TDEConfig * config = kapp->config();

    config->setGroup( "General Options" );

    config->writeEntry( "Geometry", 		size() );
    config->writeEntry( "Show Toolbar", 	_showToolBar->isChecked() );
    config->writeEntry( "Show Statusbar",	_showStatusBar->isChecked() );
    config->writeEntry( "Show Treemap",		_showTreemapView->isChecked() );
    config->writeEntry( "ToolBarPos", 		(int) toolBar( "mainToolBar" )->barPos() );

    if ( _treemapView )
	config->writeEntry( "TreemapViewHeight", _treemapView->height() );

    _fileOpenRecent->saveEntries( config,"Recent Files" );
}


void
KDirStatApp::saveProperties( TDEConfig *config )
{
    (void) config;
    // TODO
}


void
KDirStatApp::readProperties( TDEConfig *config )
{
    (void) config;
    // TODO
}


bool
KDirStatApp::queryClose()
{
    return true;
}

bool
KDirStatApp::queryExit()
{
    emit saveConfig();

    return true;
}


//============================================================================
//				     Slots
//============================================================================


void
KDirStatApp::fileAskOpenDir()
{
    statusMsg( i18n( "Opening directory..." ) );

    KURL url = KFileDialog::getExistingDirectory( TQString(), this, i18n( "Open Directory..." ) );

    if( ! url.isEmpty() )
	openURL( fixedUrl( url.url() ) );

    statusMsg( i18n( "Ready." ) );
}


void
KDirStatApp::fileAskOpenUrl()
{
    statusMsg( i18n( "Opening URL..." ) );

    KURL url = KURLRequesterDlg::getURL( TQString(),	// startDir
					 this, i18n( "Open URL..." ) );

    if( ! url.isEmpty() )
	openURL( fixedUrl( url.url() ) );

    statusMsg( i18n( "Ready." ) );
}


void
KDirStatApp::fileOpenRecent( const KURL& url )
{
    statusMsg( i18n( "Opening directory..." ) );

    if( ! url.isEmpty() )
	openURL( fixedUrl( url.url() ) );

    statusMsg( i18n( "Ready." ) );
}


void
KDirStatApp::fileCloseDir()
{
    statusMsg( i18n( "Closing directory..." ) );

    _treeView->clear();
    _fileRefreshAll->setEnabled( false );
    close();

    statusMsg( i18n( "Ready." ) );
}


void
KDirStatApp::refreshAll()
{
    statusMsg( i18n( "Refreshing directory tree..." ) );
    _treeView->refreshAll();
    statusMsg( i18n( "Ready." ) );
}


void
KDirStatApp::refreshSelected()
{
    if ( ! _treeView->selection() )
	return;

    statusMsg( i18n( "Refreshing selected subtree..." ) );
    _treeView->refreshSelected();
    statusMsg( i18n( "Ready." ) );
}


void
KDirStatApp::stopReading()
{
    _treeView->abortReading();
}


void
KDirStatApp::editCopy()
{
    if ( _treeView->selection() )
	kapp->clipboard()->setText(_treeView->selection()->orig()->url());

#if 0
#warning debug
    if ( _activityTracker )
	_activityTracker->trackActivity( 800 );
#endif
}


void
KDirStatApp::cleanupOpenWith()
{
    if ( ! _treeView->selection() )
	return;

    KFileInfo * sel = _treeView->selection()->orig();

    if ( sel->isDotEntry() )
	return;

    KURL::List urlList( KURL( sel->url()  ) );
    KRun::displayOpenWithDialog( urlList, false );
}


void
KDirStatApp::selectionChanged( KFileInfo *selection )
{
    if ( selection )
    {
	_editCopy->setEnabled( true );
	_reportMailToOwner->setEnabled( true );
	_fileRefreshSelected->setEnabled( ! selection->isDotEntry() );
	_cleanupOpenWith->setEnabled( ! selection->isDotEntry() );

	if ( selection->isMountPoint() &&
	     selection->readState() == KDirOnRequestOnly )
	{
	    _fileContinueReadingAtMountPoint->setEnabled( true );
	}
	else
	    _fileContinueReadingAtMountPoint->setEnabled( false );

	statusMsg(selection->url());
    }
    else
    {
	_editCopy->setEnabled( false );
	_reportMailToOwner->setEnabled( false );
	_fileRefreshSelected->setEnabled( false );
	_fileContinueReadingAtMountPoint->setEnabled( false );
	_cleanupOpenWith->setEnabled( false );
	statusMsg( "" );
    }

    updateActions();
}


void
KDirStatApp::updateActions()
{
    _treemapZoomIn->setEnabled ( _treemapView && _treemapView->canZoomIn() );
    _treemapZoomOut->setEnabled( _treemapView && _treemapView->canZoomOut() );
    _treemapRebuild->setEnabled( _treemapView && _treemapView->rootTile() );
    _treemapSelectParent->setEnabled( _treemapView && _treemapView->canSelectParent() );

    if ( _treeView->tree() && _treeView->tree()->isBusy() )
	_fileStopReading->setEnabled( true );
    else
	_fileStopReading->setEnabled( false );
}


void
KDirStatApp::treemapZoomIn()
{
    if ( _treemapView )
    {
	_treemapView->zoomIn();
	updateActions();
    }
}


void
KDirStatApp::treemapZoomOut()
{
    if ( _treemapView )
    {
	_treemapView->zoomOut();
	updateActions();
    }
}


void
KDirStatApp::treemapSelectParent()
{
    if ( _treemapView )
    {
	_treemapView->selectParent();
	updateActions();
    }
}


void
KDirStatApp::treemapRebuild()
{
    if ( _treemapView )
    {
	_treemapView->rebuildTreemap();
	updateActions();
    }
}


void
KDirStatApp::treemapHelp()
{
    kapp->invokeHelp( "treemap_intro" );
}


void
KDirStatApp::toggleToolBar()
{
    if   ( _showToolBar->isChecked() )	toolBar( "mainToolBar" )->show();
    else				toolBar( "mainToolBar" )->hide();
}


void
KDirStatApp::toggleStatusBar()
{
    if   ( _showStatusBar->isChecked() )	statusBar()->show();
    else					statusBar()->hide();
}


void
KDirStatApp::toggleTreemapView()
{
    if   ( _showTreemapView->isChecked() )
    {
	if ( ! _treemapView )
	    createTreemapView();
    }
    else
    {
	if ( _treemapView )
	    deleteTreemapView();
    }
}


void
KDirStatApp::preferences()
{
    if ( ! _settingsDialog )
    {
	_settingsDialog = new KDirStat::KSettingsDialog( this );
	TQ_CHECK_PTR( _settingsDialog );
    }

    if ( ! _settingsDialog->isVisible() )
	_settingsDialog->show();
}


void
KDirStatApp::askForFeedback()
{
    if ( ! doFeedbackReminder() )
	return;

    TDEConfig * config = kapp->config();

    switch ( KMessageBox::warningYesNoCancel( this,
					      i18n( "Now that you know this program for some time,\n"
						    "wouldn't you like to tell the authors your opinion about it?\n"
						    "\n"
						    "Open Source software depends on user feedback.\n"
						    "Your opinion can help us make the software better." ),
					      i18n( "Please tell us your opinion!" ),	// caption
					      i18n( "Open &Feedback Form..." ),		// yesButton
					      i18n( "&No, and don't ask again!" )	// noButton
					      )
	     )
    {
	case KMessageBox::Yes:
	    sendFeedbackMail();
	    break;

	case KMessageBox::No:	// ...and don't ask again
	    config->setGroup( "Feedback" );
	    config->writeEntry( "dontAsk", true );
	    config->sync();	// make sure this doesn't get lost even if the app is killed or crashes
	    break;

	case KMessageBox::Cancel:
	    break;
    }

    config->setGroup( "Feedback" );
    int  remindersCount = config->readNumEntry ( "remindersCount", 0 );
    config->writeEntry( "remindersCount", ++remindersCount );

    if ( _activityTracker )
    {
	_activityTracker->setThreshold( _activityTracker->threshold()
					+ FEEDBACK_REMINDER_INTERVAL );
    }
}


void
KDirStatApp::feedbackMailSent()
{
    TDEConfig * config = kapp->config();
    config->setGroup( "Feedback" );
    config->writeEntry( "mailSent", true );
    config->sync();
}


bool
KDirStatApp::doFeedbackReminder()
{
    TDEConfig * config = kapp->config();
    config->setGroup( "Feedback" );

    bool mailSent	= config->readBoolEntry( "mailSent", false );
    bool dontAsk	= config->readBoolEntry( "dontAsk", false );
    int  remindersCount = config->readNumEntry ( "remindersCount", 0 );

    return !mailSent && !dontAsk && remindersCount < 5;
}


void
KDirStatApp::statusMsg( const TQString &text )
{
    // Change status message permanently

    statusBar()->clear();
    statusBar()->changeItem( text, ID_STATUS_MSG );
}


void
KDirStatApp::contextMenu( KDirTreeViewItem * item, const TQPoint &pos )
{
    NOT_USED( item );

    if ( _treeViewContextMenu )
	_treeViewContextMenu->popup( pos );
}


void
KDirStatApp::contextMenu( KTreemapTile * tile, const TQPoint &pos )
{
    NOT_USED( tile );

    if ( _treemapContextMenu )
	_treemapContextMenu->popup( pos );
}


void
KDirStatApp::createTreemapView()
{
    if ( ! _showTreemapView->isChecked() || ! _treeView->tree() )
	return;

    if ( _treemapView )
	delete _treemapView;

    _treemapView = new KTreemapView( _treeView->tree(), _splitter,
				     TQSize( _splitter->width(), _treemapViewHeight ) );
    TQ_CHECK_PTR( _treemapView );

    connect( _treemapView,	TQ_SIGNAL( contextMenu( KTreemapTile *, const TQPoint & ) ),
	     this,		TQ_SLOT  ( contextMenu( KTreemapTile *, const TQPoint & ) ) );

    connect( _treemapView,	TQ_SIGNAL( treemapChanged()	),
	     this,		TQ_SLOT  ( updateActions()	) 	);

    connect( _treemapView,	TQ_SIGNAL( selectionChanged( KFileInfo * ) ),
	     this,      	TQ_SLOT  ( selectionChanged( KFileInfo * ) ) );

    if ( _activityTracker )
    {
	connect( _treemapView,		TQ_SIGNAL( userActivity ( int )	),
		 _activityTracker,	TQ_SLOT  ( trackActivity( int ) 	) );
    }

    _treemapView->show(); // TQSplitter needs explicit show() for new children
    updateActions();
}


void
KDirStatApp::deleteTreemapView()
{
    if ( _treemapView )
    {
	_treemapViewHeight = _treemapView->height();
	delete _treemapView;
    }

    _treemapView = 0;
    updateActions();
}

#include "kdirstatapp.moc"

// EOF
