panelfunc.cpp

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/***************************************************************************
                            panelfunc.cpp
                         -------------------
copyright            : (C) 2000 by Shie Erlich & Rafi Yanai
e-mail               : [e-mail]
web site             : http://krusader.sourceforge.net
---------------------------------------------------------------------------
Description 
***************************************************************************

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                                                 S o u r c e    F i l e

***************************************************************************
*                                                                         *
*   This program is free software; you can redistribute it and/or modify  *
*   it under the terms of the GNU General Public License as published by  *
*   the Free Software Foundation; either version 2 of the License, or     *
*   (at your option) any later version.                                   *
*                                                                         *
***************************************************************************/
#include <unistd.h> 
// Qt Includes
#include <qdir.h>
#include <qtextstream.h>
#include <qeventloop.h>
#include <qclipboard.h> 
// KDE Includes
#include <klocale.h>
#include <kprocess.h>
#include <kpropertiesdialog.h>
#include <kopenwith.h>
#include <kmessagebox.h>
#include <kcursor.h>
#include <kstandarddirs.h>
#include <ktempfile.h>
#include <kurl.h>
#include <krun.h>
#include <kinputdialog.h>
#include <kdebug.h>
#include <kio/netaccess.h>
#include <kstandarddirs.h>
#include <ktempdir.h> 
#include <kurlrequester.h>
#include <kprocio.h>
#include <kdesktopfile.h>
// Krusader Includes
#include "panelfunc.h"
#include "krcalcspacedialog.h"
#include "krdetailedview.h"
#include "../krusader.h"
#include "../krslots.h"
#include "../defaults.h"
#include "../VFS/vfile.h"
#include "../VFS/vfs.h"
#include "../VFS/virt_vfs.h"
#include "../VFS/krarchandler.h"
#include "../VFS/krpermhandler.h"
#include "../VFS/krvfshandler.h"
#include "../VFS/preservingcopyjob.h"
#include "../VFS/virtualcopyjob.h"
#include "../Dialogs/packgui.h"
#include "../Dialogs/krdialogs.h"
#include "../Dialogs/krpleasewait.h"
#include "../Dialogs/krspwidgets.h"
#include "../Dialogs/checksumdlg.h"
#include "../KViewer/krviewer.h"
#include "../resources.h"
#include "../krservices.h"
#include "../GUI/syncbrowsebutton.h"
#include "../Queue/queue_mgr.h"
#include "krdrag.h"
#include <kurldrag.h>

//////////////////////////////////////////////////////////
//////          ----------      List Panel -------------                ////////
//////////////////////////////////////////////////////////

ListPanelFunc::ListPanelFunc( ListPanel *parent ) :
panel( parent ), inRefresh( false ), vfsP( 0 ) {
	urlStack.push( "file:/" );
	connect( &delayTimer, SIGNAL( timeout() ), this, SLOT( doOpenUrl() ) );
}

void ListPanelFunc::openUrl( const QString& url, const QString& nameToMakeCurrent ) {
	openUrl( vfs::fromPathOrURL( 
		// KURLRequester is buggy: it should return a string containing "/home/shie/downloads"
		// but it returns "~/downloads" which is parsed incorrectly by vfs::fromPathOrURL.
		// replacedPath should replace ONLY $HOME and environment variables
		panel->origin->completionObject()->replacedPath(url) )
		, nameToMakeCurrent );
}

void ListPanelFunc::immediateOpenUrl( const KURL& urlIn ) {
	KURL url = urlIn;
	url.cleanPath();

	// check for special cases first - don't refresh here !
	// you may call openUrl or vfs_refresh()
	if ( !url.isValid() ) {
		if ( url.url() == "~" ) {
			return openUrl( QDir::homeDirPath() );
		} else if ( !url.url().startsWith( "/" ) ) {
			// possible relative URL - translate to full URL
			url = files() ->vfs_getOrigin();
			url.addPath( urlIn.url() );
			//kdDebug()<< urlIn.url() << "," << url.url() <<endl;
		} else {
			panel->slotStartUpdate();  // refresh the panel
			return ;
		}
	}

	// if we are not refreshing to current URL
	bool is_equal_url = files() ->vfs_getOrigin().equals( url, true );
	
	if ( !is_equal_url ) {
		// change the cursor to busy
		panel->setCursor( KCursor::waitCursor() );
	}

	if ( !nameToMakeCurrent.isEmpty() ) {
		panel->view->setNameToMakeCurrent( nameToMakeCurrent );
		// if the url we're refreshing into is the current one, then the
		// partial url will not generate the needed signals to actually allow the
		// view to use nameToMakeCurrent. do it here instead (patch by Thomas Jarosch)
		if ( is_equal_url ) {
		    panel->view->setCurrentItem( nameToMakeCurrent );
		    panel->view->makeItemVisible( panel->view->getCurrentKrViewItem() );
		}		
	}

	vfs* v = 0;
	if ( !urlStack.top().equals( url ) )
		urlStack.push( url );
	// count home many urls is in the stack, so later on, we'll know if the refresh was a success
	uint stackSize = urlStack.size();
	bool refreshFailed = true; // assume the worst
	while ( true ) {
		KURL u = urlStack.pop();
		//u.adjustPath(-1); // remove trailing "/"
		u.cleanPath(); // Resolves "." and ".." components in path.
		v = KrVfsHandler::getVfs( u, panel, files() );
		if ( !v )
			continue; //this should not happen !
		if ( v != vfsP ) {
			if( vfsP->vfs_canDelete() )                
				delete vfsP;
			else {
				connect( vfsP, SIGNAL( deleteAllowed() ), vfsP, SLOT( deleteLater() ) );
				vfsP->vfs_requestDelete();                                
			}
			vfsP = v; // v != 0 so this is safe
		} else {
			if( vfsP->vfs_isBusy() )
			{
				delayURL = url;               /* this function is useful for FTP url-s and bookmarks */
				delayTimer.start( 100, true );  /* if vfs is busy try refreshing later */
				return;
			}
		}
		connect( files(), SIGNAL(startJob(KIO::Job* )),
				panel, SLOT(slotJobStarted(KIO::Job* )));
		if ( vfsP->vfs_refresh( u ) ) {
			break; // we have a valid refreshed URL now
		}
		if ( vfsP == 0 )  // the object was deleted during vfs_refresh? Hoping the best...
			return;                
		// prevent repeated error messages
		if ( vfsP->vfs_isDeleting() )
			break;                
		vfsP->vfs_setQuiet( true );
	}
	vfsP->vfs_setQuiet( false );

	// if we popped exactly 1 url from the stack, it means the url we were
	// given was refreshed successfully.
	if (stackSize == urlStack.size() + 1)
		refreshFailed = false;

	// update the urls stack
	if ( !files() ->vfs_getOrigin().equals( urlStack.top() ) ) {
		urlStack.push( files() ->vfs_getOrigin() );
	}
	// disconnect older signals
	disconnect( files(), SIGNAL( addedVfile( vfile* ) ), 0, 0 );
	disconnect( files(), SIGNAL( updatedVfile( vfile* ) ), 0, 0 );
	disconnect( files(), SIGNAL( deletedVfile( const QString& ) ), 0, 0 );
	disconnect( files(), SIGNAL( cleared() ), 0, 0 );
	// connect to the vfs's dirwatch signals
	connect( files(), SIGNAL( addedVfile( vfile* ) ),
	         panel, SLOT( slotItemAdded( vfile* ) ) );
	connect( files(), SIGNAL( updatedVfile( vfile* ) ),
	         panel, SLOT( slotItemUpdated( vfile* ) ) );
	connect( files(), SIGNAL( deletedVfile( const QString& ) ),
	         panel, SLOT( slotItemDeleted( const QString& ) ) );
	connect( files(), SIGNAL( cleared() ),
	         panel, SLOT( slotCleared() ) );
	
	// on local file system change the working directory
	if ( files() ->vfs_getType() == vfs::NORMAL )
		chdir( files() ->vfs_getOrigin().path().local8Bit() );
	
	// see if the open url operation failed, and if so, 
	// put the attempted url in the origin bar and let the user change it
	if (refreshFailed) {
		panel->origin->setURL(urlIn.prettyURL());
		panel->origin->setFocus();
	}
}

void ListPanelFunc::openUrl( const KURL& url, const QString& nameToMakeCurrent ) {
	panel->inlineRefreshCancel();
	// first the other dir, then the active! Else the focus changes and the other becomes active
	if ( panel->syncBrowseButton->state() == SYNCBROWSE_CD ) {
		// prevents that the sync-browsing circles itself to death
		static bool inSync = false;
		if( ! inSync ){
			inSync = true;
			//do sync-browse stuff....
			KURL otherDir = OTHER_PANEL->virtualPath();
			OTHER_FUNC->files() ->vfs_setQuiet( true );
			// the trailing slash is nessesary because krusader provides Dir's without it
			// we can't use openUrl because the delay don't allow a check if the panel has realy changed!
			OTHER_FUNC->immediateOpenUrl( KURL::relativeURL( panel->virtualPath().url() + "/", url.url() ) );
			OTHER_FUNC->files() ->vfs_setQuiet( false );
			// now we need to test ACTIVE_PANEL because the openURL has changed the active panel!!
			if ( ACTIVE_PANEL->virtualPath().equals( otherDir ) ) {
				// deactivating the sync-browse if syncbrowse not possible
				panel->syncBrowseButton->setOn( false );
			}
			inSync = false;
		}
	}
	this->nameToMakeCurrent = nameToMakeCurrent;
	delayURL = url;               /* this function is useful for FTP url-s and bookmarks */
	delayTimer.start( 0, true );  /* to avoid qApp->processEvents() deadlock situaltion */
}

void ListPanelFunc::refresh() {
	openUrl(panel->virtualPath()); // re-read the files
}

void ListPanelFunc::doOpenUrl() {
	immediateOpenUrl( delayURL );
}

void ListPanelFunc::goBack() {
	if ( urlStack.isEmpty() )
		return ;

	if ( urlStack.top().equals( files() ->vfs_getOrigin() ) )
		urlStack.pop();
	openUrl( urlStack.top(), files() ->vfs_getOrigin().fileName() );

	if ( urlStack.isEmpty() )
		krBack->setEnabled( false );
}

void ListPanelFunc::redirectLink() {
	if ( files() ->vfs_getType() != vfs::NORMAL ) {
		KMessageBox::sorry( krApp, i18n( "You can edit links only on local file systems" ) );
		return ;
	}

	vfile *vf = files() ->vfs_search( panel->getCurrentName() );
	if ( !vf )
		return ;

	QString file = files() ->vfs_getFile( vf->vfile_getName() ).path( -1 );
	QString currentLink = vf->vfile_getSymDest();
	if ( currentLink.isEmpty() ) {
		KMessageBox::sorry( krApp, i18n( "The current file is not a link, so I can't redirect it." ) );
		return ;
	}

	// ask the user for a new destination
	bool ok = false;
	QString newLink =
	    KInputDialog::getText( i18n( "Link Redirection" ),
	                           i18n( "Please enter the new link destination:" ), currentLink, &ok, krApp );

	// if the user canceled - quit
	if ( !ok || newLink == currentLink )
		return ;
	// delete the current link
	if ( unlink( file.local8Bit() ) == -1 ) {
		KMessageBox::sorry( krApp, i18n( "Can't remove old link: " ) + file );
		return ;
	}
	// try to create a new symlink
	if ( symlink( newLink.local8Bit(), file.local8Bit() ) == -1 ) {
		KMessageBox:: /* --=={ Patch by Heiner <[e-mail]> }==-- */sorry( krApp, i18n( "Failed to create a new link: " ) + file );
		return ;
	}
}

void ListPanelFunc::krlink( bool sym ) {
	if ( files() ->vfs_getType() != vfs::NORMAL ) {
		KMessageBox::sorry( krApp, i18n( "You can create links only on local file systems" ) );
		return ;
	}

	QString name = panel->getCurrentName();

	// ask the new link name..
	bool ok = false;
	QString linkName =
	    KInputDialog::getText( i18n( "New link" ), i18n( "Create a new link to: " ) + name, name, &ok, krApp );

	// if the user canceled - quit
	if ( !ok || linkName == name )
		return ;

	// if the name is already taken - quit
	if ( files() ->vfs_search( linkName ) != 0 ) {
		KMessageBox::sorry( krApp, i18n( "A directory or a file with this name already exists." ) );
		return ;
	}

	if ( linkName.left( 1 ) != "/" )
		linkName = files() ->vfs_workingDir() + "/" + linkName;

	if ( linkName.contains( "/" ) )
		name = files() ->vfs_getFile( name ).path( -1 );

	if ( sym ) {
		if ( symlink( name.local8Bit(), linkName.local8Bit() ) == -1 )
			KMessageBox::sorry( krApp, i18n( "Failed to create a new symlink: " ) + linkName +
			                    i18n( " To: " ) + name );
	} else {
		if ( link( name.local8Bit(), linkName.local8Bit() ) == -1 )
			KMessageBox::sorry( krApp, i18n( "Failed to create a new link: " ) + linkName +
			                    i18n( " To: " ) + name );
	}
}

void ListPanelFunc::view() {
	QString fileName = panel->getCurrentName();
	if ( fileName.isNull() )
		return ;

	// if we're trying to view a directory, just exit
	vfile * vf = files() ->vfs_search( fileName );
	if ( !vf || vf->vfile_isDir() )
		return ;
	if ( !vf->vfile_isReadable() ) {
		KMessageBox::sorry( 0, i18n( "No permissions to view this file." ) );
		return ;
	}
	// call KViewer.
	KrViewer::view( files() ->vfs_getFile( fileName ) );
	// nothing more to it!
}

void ListPanelFunc::terminal() {
	QString save = getcwd( 0, 0 );
	chdir( panel->realPath().local8Bit() );

	KProcess proc;
	krConfig->setGroup( "General" );
	QString term = krConfig->readEntry( "Terminal", _Terminal );
	proc << KrServices::separateArgs( term );

	if ( term.contains( "konsole" ) )    /* KDE 3.2 bug (konsole is killed by pressing Ctrl+C) */
	{                                  /* Please remove the patch if the bug is corrected */
		proc << "&";
		proc.setUseShell( true );
	}

	if ( !proc.start( KProcess::DontCare ) )
		KMessageBox::sorry( krApp, i18n( "<qt>Can't open <b>%1</b></qt>" ).arg(term) );

	chdir( save.local8Bit() );
}

void ListPanelFunc::editFile() {
	QString name = panel->getCurrentName();
	if ( name.isNull() )
		return ;

	if ( files() ->vfs_search( name ) ->vfile_isDir() ) {
		KMessageBox::sorry( krApp, i18n( "You can't edit a directory" ) );
		return ;
	}

	if ( !files() ->vfs_search( name ) ->vfile_isReadable() ) {
		KMessageBox::sorry( 0, i18n( "No permissions to edit this file." ) );