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/***************************************************************************
krcalcspacedialog.cpp - description
-------------------
begin : Fri Jan 2 2004
copyright : (C) 2004 by Shie Erlich & Rafi Yanai
e-mail : krusader@users.sourceforge.net
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. *
* *
***************************************************************************/
// TQt Includes
#include <tqtimer.h>
#include <tqlayout.h>
#include <tqlabel.h>
// KDE Includes
#include <klocale.h>
#include <kcursor.h>
// Krusader Includes
#include "krcalcspacedialog.h"
#include "listpanel.h"
#include "panelfunc.h"
#include "../krusader.h"
#include "../VFS/krpermhandler.h"
/* --=={ Patch by Heiner <h.eichmann@gmx.de> }==-- */
KrCalcSpaceDialog::CalcThread::CalcThread(KrCalcSpaceDialog * tqparent, ListPanel * panel, const TQStringList & items)
: m_totalSize(0), m_currentSize(0), m_totalFiles(0), m_totalDirs(0), m_items(items), m_files(panel->func->files()),
m_view(panel->view), m_parent(tqparent), m_threadInUse(true), m_stop(false) {}
void KrCalcSpaceDialog::CalcThread::cleanUp(){
if (m_threadInUse || !finished())
m_synchronizeUsageAccess.unlock();
else{
m_synchronizeUsageAccess.unlock(); // prevents a resource leak
// otherwise: no one needs this instance any more: delete it
delete this;
}
}
void KrCalcSpaceDialog::CalcThread::deleteInstance(){
// synchronize to avoid race condition.
m_synchronizeUsageAccess.lock();
m_threadInUse = false;
cleanUp();
}
void KrCalcSpaceDialog::CalcThread::run(){
if ( !m_items.isEmpty() ) // if something to do: do the calculation
for ( TQStringList::ConstIterator it = m_items.begin(); it != m_items.end(); ++it )
{
m_currentSize = 0;
m_files->vfs_calcSpace( *it, &m_currentSize, &m_totalFiles, &m_totalDirs , & m_stop);
if (m_stop)
break;
KrDetailedViewItem * viewItem = dynamic_cast<KrDetailedViewItem *>(m_view->findItemByName ( *it ) );
if (viewItem){
KrCalcSpaceDialog::setDirSize(viewItem, m_currentSize);
//viewItem->tqrepaintItem(); // crash in KrDetailedViewItem::tqrepaintItem(): setPixmap(_view->column(KrDetailedView::Name),KrView::getIcon(_vf))
}
m_totalSize += m_currentSize;
m_currentSize = 0;
}
// synchronize to avoid race condition.
m_synchronizeUsageAccess.lock();
cleanUp(); // this does not need the instance any more
}
void KrCalcSpaceDialog::CalcThread::stop(){
// cancel was pressed
m_stop = true;
}
KrCalcSpaceDialog::KrCalcSpaceDialog(TQWidget *tqparent, ListPanel * files, const TQStringList & items, bool autoclose) :
KDialogBase(tqparent, "KrCalcSpaceDialog", true, i18n("Calculate Occupied Space"), Ok|Cancel),
m_autoClose(autoclose), m_canceled(false), m_timerCounter(0){
// the dialog: The Ok button is hidden until it is needed
showButtonOK(false);
m_thread = new CalcThread(this, files, items);
m_pollTimer = new TQTimer(this);
TQWidget * mainWidget = new TQWidget( this );
setMainWidget(mainWidget);
TQVBoxLayout *topLayout = new TQVBoxLayout( mainWidget, 0, spacingHint() );
m_label = new TQLabel( "", mainWidget, "caption" );
showResult(); // fill m_label with something usefull
topLayout->addWidget( m_label );
topLayout->addStretch(10);
}
void KrCalcSpaceDialog::calculationFinished(){
// close dialog if auto close is true
if (m_autoClose){
done(0);
return;
}
// otherwise hide cancel and show ok button
showButtonCancel(false);
showButtonOK(true);
showResult(); // and show final result
}
/* This timer has two jobs: it polls the thread if it is finished. Polling is
better here as it might finish while the dialog builds up. Secondly it refreshes
the displayed result.
*/
void KrCalcSpaceDialog::timer(){
// thread finished?
if (m_thread->finished()){
// close dialog or switch buttons
calculationFinished();
m_pollTimer->stop(); // stop the polling. No longer needed
return;
}
// Every 10 pollings (1 second) refresh the displayed result
if (++m_timerCounter > 10){
m_timerCounter = 0;
showResult();
}
}
void KrCalcSpaceDialog::showResult(){
if (!m_thread) return;
TQString msg;
TQString fileName = ( ( m_thread->getItems().count() == 1 ) ? ( i18n( "Name: " ) + m_thread->getItems().first() + "\n" ) : TQString( "" ) );
msg = fileName + i18n( "Total occupied space: %1").tqarg( KIO::convertSize( m_thread->getTotalSize() ) );
if (m_thread->getTotalSize() >= 1024)
msg += " (" + KRpermHandler::parseSize( m_thread->getTotalSize() ) + "bytes)";
msg += "\n";
msg += i18n("in %n directory", "in %n directories", m_thread->getTotalDirs() );
msg += " ";
msg += i18n("and %n file", "and %n files", m_thread->getTotalFiles() );
m_label->setText(msg);
}
void KrCalcSpaceDialog::slotCancel(){
m_thread->stop(); // notify teh thread to stop
m_canceled = true; // set the cancel flag
KDialogBase::slotCancel(); // close the dialog
}
KrCalcSpaceDialog::~KrCalcSpaceDialog(){
CalcThread * tmp = m_thread;
m_thread = 0; // do not access the thread anymore or core dump if smoe piece of code wrongly does
tmp->deleteInstance(); // Notify the thread, that the dialog does not need anymore.
}
void KrCalcSpaceDialog::exec(){
m_thread->start(); // start the thread
if (m_autoClose){ // autoclose
// set the cursor to busy mode and wait 3 seconds or until the thread finishes
krApp->setCursor( KCursor::waitCursor() );
bool result = m_thread->wait(3000);
krApp->setCursor( KCursor::arrowCursor() ); // return the cursor to normal mode
if (result) return;// thread finished: do not show the dialog
showResult(); // fill the invisible dialog with usefull data
}
// prepare and start the poll timer
connect(m_pollTimer, TQT_SIGNAL(timeout()), this, TQT_SLOT(timer()));
m_pollTimer->start(100);
KDialogBase::exec(); // show the dialog
}
/* --=={ End of patch by Heiner <h.eichmann@gmx.de> }==-- */
#include "krcalcspacedialog.moc"
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