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188 lines
7.1 KiB
188 lines
7.1 KiB
/***************************************************************************
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krcalcspacedialog.cpp - description
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-------------------
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begin : Fri Jan 2 2004
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copyright : (C) 2004 by Shie Erlich & Rafi Yanai
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e-mail : krusader@users.sourceforge.net
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web site : http://krusader.sourceforge.net
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---------------------------------------------------------------------------
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Description
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***************************************************************************
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A
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88`8b 88`8b 88 88 `Y8b. 88~~~88 88 88 88~~~~~ 88`8b
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YP YD 88 YD ~Y8888P' `8888Y' YP YP Y8888D' Y88888P 88 YD
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S o u r c e F i l e
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***************************************************************************
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* *
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* This program is free software; you can redistribute it and/or modify *
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* it under the terms of the GNU General Public License as published by *
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* the Free Software Foundation; either version 2 of the License, or *
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* (at your option) any later version. *
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* *
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***************************************************************************/
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// TQt Includes
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#include <tqtimer.h>
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#include <tqlayout.h>
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#include <tqlabel.h>
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// KDE Includes
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#include <tdelocale.h>
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#include <kcursor.h>
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// Krusader Includes
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#include "krcalcspacedialog.h"
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#include "listpanel.h"
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#include "panelfunc.h"
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#include "../krusader.h"
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#include "../VFS/krpermhandler.h"
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/* --=={ Patch by Heiner <h.eichmann@gmx.de> }==-- */
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KrCalcSpaceDialog::CalcThread::CalcThread(KrCalcSpaceDialog * parent, ListPanel * panel, const TQStringList & items)
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: m_totalSize(0), m_currentSize(0), m_totalFiles(0), m_totalDirs(0), m_items(items), m_files(panel->func->files()),
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m_view(panel->view), m_parent(parent), m_threadInUse(true), m_stop(false) {}
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void KrCalcSpaceDialog::CalcThread::cleanUp(){
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if (m_threadInUse || !finished())
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m_synchronizeUsageAccess.unlock();
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else{
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m_synchronizeUsageAccess.unlock(); // prevents a resource leak
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// otherwise: no one needs this instance any more: delete it
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delete this;
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}
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}
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void KrCalcSpaceDialog::CalcThread::deleteInstance(){
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// synchronize to avoid race condition.
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m_synchronizeUsageAccess.lock();
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m_threadInUse = false;
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cleanUp();
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}
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void KrCalcSpaceDialog::CalcThread::run(){
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if ( !m_items.isEmpty() ) // if something to do: do the calculation
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for ( TQStringList::ConstIterator it = m_items.begin(); it != m_items.end(); ++it )
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{
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m_currentSize = 0;
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m_files->vfs_calcSpace( *it, &m_currentSize, &m_totalFiles, &m_totalDirs , & m_stop);
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if (m_stop)
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break;
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KrDetailedViewItem * viewItem = dynamic_cast<KrDetailedViewItem *>(m_view->findItemByName ( *it ) );
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if (viewItem){
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KrCalcSpaceDialog::setDirSize(viewItem, m_currentSize);
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//viewItem->repaintItem(); // crash in KrDetailedViewItem::repaintItem(): setPixmap(_view->column(KrDetailedView::Name),KrView::getIcon(_vf))
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}
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m_totalSize += m_currentSize;
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m_currentSize = 0;
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}
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// synchronize to avoid race condition.
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m_synchronizeUsageAccess.lock();
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cleanUp(); // this does not need the instance any more
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}
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void KrCalcSpaceDialog::CalcThread::stop(){
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// cancel was pressed
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m_stop = true;
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}
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KrCalcSpaceDialog::KrCalcSpaceDialog(TQWidget *parent, ListPanel * files, const TQStringList & items, bool autoclose) :
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KDialogBase(parent, "KrCalcSpaceDialog", true, i18n("Calculate Occupied Space"), Ok|Cancel),
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m_autoClose(autoclose), m_canceled(false), m_timerCounter(0){
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// the dialog: The Ok button is hidden until it is needed
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showButtonOK(false);
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m_thread = new CalcThread(this, files, items);
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m_pollTimer = new TQTimer(this);
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TQWidget * mainWidget = new TQWidget( this );
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setMainWidget(mainWidget);
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TQVBoxLayout *topLayout = new TQVBoxLayout( mainWidget, 0, spacingHint() );
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m_label = new TQLabel( "", mainWidget, "caption" );
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showResult(); // fill m_label with something usefull
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topLayout->addWidget( m_label );
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topLayout->addStretch(10);
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}
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void KrCalcSpaceDialog::calculationFinished(){
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// close dialog if auto close is true
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if (m_autoClose){
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done(0);
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return;
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}
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// otherwise hide cancel and show ok button
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showButtonCancel(false);
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showButtonOK(true);
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showResult(); // and show final result
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}
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/* This timer has two jobs: it polls the thread if it is finished. Polling is
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better here as it might finish while the dialog builds up. Secondly it refreshes
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the displayed result.
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*/
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void KrCalcSpaceDialog::timer(){
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// thread finished?
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if (m_thread->finished()){
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// close dialog or switch buttons
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calculationFinished();
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m_pollTimer->stop(); // stop the polling. No longer needed
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return;
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}
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// Every 10 pollings (1 second) refresh the displayed result
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if (++m_timerCounter > 10){
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m_timerCounter = 0;
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showResult();
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}
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}
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void KrCalcSpaceDialog::showResult(){
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if (!m_thread) return;
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TQString msg;
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TQString fileName = ( ( m_thread->getItems().count() == 1 ) ? ( i18n( "Name: " ) + m_thread->getItems().first() + "\n" ) : TQString( "" ) );
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msg = fileName + i18n( "Total occupied space: %1").arg( TDEIO::convertSize( m_thread->getTotalSize() ) );
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if (m_thread->getTotalSize() >= 1024)
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msg += " (" + KRpermHandler::parseSize( m_thread->getTotalSize() ) + "bytes)";
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msg += "\n";
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msg += i18n("in %n directory", "in %n directories", m_thread->getTotalDirs() );
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msg += " ";
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msg += i18n("and %n file", "and %n files", m_thread->getTotalFiles() );
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m_label->setText(msg);
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}
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void KrCalcSpaceDialog::slotCancel(){
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m_thread->stop(); // notify teh thread to stop
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m_canceled = true; // set the cancel flag
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KDialogBase::slotCancel(); // close the dialog
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}
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KrCalcSpaceDialog::~KrCalcSpaceDialog(){
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CalcThread * tmp = m_thread;
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m_thread = 0; // do not access the thread anymore or core dump if smoe piece of code wrongly does
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tmp->deleteInstance(); // Notify the thread, that the dialog does not need anymore.
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}
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void KrCalcSpaceDialog::exec(){
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m_thread->start(); // start the thread
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if (m_autoClose){ // autoclose
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// set the cursor to busy mode and wait 3 seconds or until the thread finishes
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krApp->setCursor( KCursor::waitCursor() );
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bool result = m_thread->wait(3000);
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krApp->setCursor( KCursor::arrowCursor() ); // return the cursor to normal mode
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if (result) return;// thread finished: do not show the dialog
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showResult(); // fill the invisible dialog with usefull data
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}
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// prepare and start the poll timer
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connect(m_pollTimer, TQT_SIGNAL(timeout()), this, TQT_SLOT(timer()));
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m_pollTimer->start(100);
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KDialogBase::exec(); // show the dialog
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}
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/* --=={ End of patch by Heiner <h.eichmann@gmx.de> }==-- */
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#include "krcalcspacedialog.moc"
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