src/viewpropsprogressinfo.cpp

   1 /***************************************************************************
   2  *   Copyright (C) 2006 by Peter Penz                                      *
   3  *   peter.penz@gmx.at                                                     *
   4  *                                                                         *
   5  *   This program is free software; you can redistribute it and/or modify  *
   6  *   it under the terms of the GNU General Public License as published by  *
   7  *   the Free Software Foundation; either version 2 of the License, or     *
   8  *   (at your option) any later version.                                   *
   9  *                                                                         *
  10  *   This program is distributed in the hope that it will be useful,       *
  11  *   but WITHOUT ANY WARRANTY; without even the implied warranty of        *
  12  *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the         *
  13  *   GNU General Public License for more details.                          *
  14  *                                                                         *
  15  *   You should have received a copy of the GNU General Public License     *
  16  *   along with this program; if not, write to the                         *
  17  *   Free Software Foundation, Inc.,                                       *
  18  *   59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.             *
  19  ***************************************************************************/
  20
  21 #include "viewpropsprogressinfo.h"
  22 #include "applyviewpropsjob.h"
  23 #include "viewproperties.h"
  24
  25 #include <QLabel>
  26 #include <QProgressBar>
  27 #include <QTimer>
  28 #include <QVBoxLayout>
  29
  30 #include <assert.h>
  31 #include <klocale.h>
  32 #include <kurl.h>
  33 #include <kio/jobclasses.h>
  34
  35 ViewPropsProgressInfo::ViewPropsProgressInfo(QWidget* parent,
  36                                              const KUrl& dir,
  37                                              const ViewProperties& viewProps) :
  38     KDialog(parent),
  39     m_dir(dir),
  40     m_viewProps(0),
  41     m_label(0),
  42     m_progressBar(0),
  43     m_dirSizeJob(0),
  44     m_applyViewPropsJob(0),
  45     m_timer(0)
  46 {
  47     setCaption(i18n("Applying view properties"));
  48     setButtons(KDialog::Cancel);
  49
  50     m_viewProps = new ViewProperties(dir);
  51     m_viewProps->setViewMode(viewProps.viewMode());
  52     m_viewProps->setShowHiddenFilesEnabled(viewProps.isShowHiddenFilesEnabled());
  53     m_viewProps->setSorting(viewProps.sorting());
  54     m_viewProps->setSortOrder(viewProps.sortOrder());
  55
  56     // the view properties are stored by the ViewPropsApplierJob, so prevent
  57     // that the view properties are saved twice:
  58     m_viewProps->setAutoSaveEnabled(false);
  59
  60     QWidget* main = new QWidget();
  61     QVBoxLayout* topLayout = new QVBoxLayout();
  62
  63     m_label = new QLabel(i18n("Counting folders: %1", 0), main);
  64     m_progressBar = new QProgressBar(main);
  65     m_progressBar->setMinimum(0);
  66     m_progressBar->setMaximum(0);
  67     m_progressBar->setValue(0);
  68
  69     topLayout->addWidget(m_label);
  70     topLayout->addWidget(m_progressBar);
  71
  72     main->setLayout(topLayout);
  73     setMainWidget(main);
  74
  75     // Use the directory size job to count the number of directories first. This
  76     // allows to give a progress indication for the user when applying the view
  77     // properties later.
  78     m_dirSizeJob = KIO::directorySize(dir);
  79     connect(m_dirSizeJob, SIGNAL(result(KJob*)),
  80             this, SLOT(applyViewProperties()));
  81
  82     // The directory size job cannot emit any progress signal, as it is not aware
  83     // about the total number of directories. Therefor a timer is triggered, which
  84     // periodically updates the current directory count.
  85     m_timer = new QTimer(this);
  86     connect(m_timer, SIGNAL(timeout()),
  87             this, SLOT(updateProgress()));
  88     m_timer->start(300);
  89
  90     connect(this, SIGNAL(cancelClicked()), this, SLOT(cancelApplying()));
  91 }
  92
  93 ViewPropsProgressInfo::~ViewPropsProgressInfo()
  94 {
  95     delete m_viewProps;
  96     m_viewProps = 0;
  97 }
  98
  99 void ViewPropsProgressInfo::closeEvent(QCloseEvent* event)
 100 {
 101     m_timer->stop();
 102     m_applyViewPropsJob = 0;
 103     KDialog::closeEvent(event);
 104 }
 105
 106 void ViewPropsProgressInfo::updateProgress()
 107 {
 108     if (m_dirSizeJob != 0) {
 109         const int subdirs = m_dirSizeJob->totalSubdirs();
 110         m_label->setText(i18n("Counting folders: %1", subdirs));
 111     }
 112
 113     if (m_applyViewPropsJob != 0) {
 114         const int progress = m_applyViewPropsJob->progress();
 115         m_progressBar->setValue(progress);
 116     }
 117 }
 118
 119 void ViewPropsProgressInfo::applyViewProperties()
 120 {
 121     if (m_dirSizeJob->error()) {
 122         return;
 123     }
 124
 125     const int subdirs = m_dirSizeJob->totalSubdirs();
 126     m_label->setText(i18n("Folders: %1", subdirs));
 127     m_progressBar->setMaximum(subdirs);
 128
 129     m_dirSizeJob = 0;
 130
 131     m_applyViewPropsJob = new ApplyViewPropsJob(m_dir, *m_viewProps);
 132     connect(m_applyViewPropsJob, SIGNAL(result(KJob*)),
 133             this, SLOT(close()));
 134 }
 135
 136 void ViewPropsProgressInfo::cancelApplying()
 137 {
 138     if (m_dirSizeJob != 0) {
 139         m_dirSizeJob->doKill();
 140     }
 141
 142     if (m_applyViewPropsJob != 0) {
 143         m_applyViewPropsJob->doKill();
 144     }
 145 }
 146
 147 #include "viewpropsprogressinfo.moc"