/*
 *     Copyright (C) 2007 by Mathias Soeken <msoeken@tzi.de>
 *
 *   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.
 *
 *   This program is distributed in the hope that it will be useful,
 *   but WITHOUT ANY WARRANTY; without even the implied warranty of
 *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *   GNU General Public License for more details.
 *
 *   You should have received a copy of the GNU General Public License along
 *   with this program; if not, write to the
 *      Free Software Foundation, Inc.
 *      51 Franklin Street, Fifth Floor
 *      Boston, MA  02110-1301  USA.
 *
 */

#include "timetrackerwidget.h"

#include <QDBusConnection>
#include <QFileInfo>
#include <QHBoxLayout>
#include <QKeyEvent>
#include <QKeySequence>
#include <QMap>
#include <QVBoxLayout>
#include <QVector>

#include <KApplication>
#include <KAction>
#include <KActionCollection>
#include <KConfig>
#include <KConfigDialog>
#include <KDebug>
#include <KFileDialog>
#include <KGlobal>
#include <KIcon>
#include <KLocale>
#include <KMessageBox>
#include <KRecentFilesAction>
#include <KStandardAction>
#include <KTabWidget>
#include <KTemporaryFile>
#include <KTreeWidgetSearchLine>
#include <KUrl>
#include <KIO/Job>

#include "edithistorydialog.h"
#include "ktimetrackerutility.h"
#include "ktimetracker.h"
#include "mainadaptor.h"
#include "reportcriteria.h"
#include "task.h"
#include "taskview.h"
#include "version.h"
#include "ui_cfgbehavior.h"
#include "ui_cfgdisplay.h"
#include "ui_cfgstorage.h"

//@cond PRIVATE
class TimetrackerWidget::Private {
  public:
    Private() :
      mLastView( 0 ), mRecentFilesAction( 0 ) {}

    QWidget *mSearchLine;
    KTabWidget *mTabWidget;
    KTreeWidgetSearchLine *mSearchWidget;
    TaskView *mLastView;
    QVector<TaskView*> mIsNewVector;
    QMap<QString, KAction*> mActions;
    KRecentFilesAction *mRecentFilesAction;

    struct ActionData {
      QString iconName;
      const char* caption;
      const char* slot;
      QString name;
      const char* toolTip;
      const char* whatsThis;
    };
};
//@endcond

TimetrackerWidget::TimetrackerWidget( QWidget *parent ) : QWidget( parent ),
  d( new TimetrackerWidget::Private() )
{
  kDebug(5970) << "Entering function";
  new MainAdaptor( this );
  QDBusConnection::sessionBus().registerObject( "/KTimeTracker", this );

  QLayout *layout = new QVBoxLayout;
  layout->setMargin( 0 );
  layout->setSpacing( 0 );

  QLayout *innerLayout = new QHBoxLayout;
  d->mSearchLine = new QWidget( this );
  innerLayout->setMargin( KDialog::marginHint() );
  innerLayout->setSpacing( KDialog::spacingHint() );
  d->mSearchWidget = new KTreeWidgetSearchLine( d->mSearchLine );
  d->mSearchWidget->setClickMessage( i18n( "Search or add task" ) );
  d->mSearchWidget->setWhatsThis( i18n( "This is a combined field. As long as you do not type ENTER, it acts as a filter. Then, only tasks that match your input are shown. As soon as you type ENTER, your input is used as name to create a new task." ) );
  d->mSearchWidget->installEventFilter( this );
  innerLayout->addWidget( d->mSearchWidget );
  d->mSearchLine->setLayout( innerLayout );

  d->mTabWidget = new KTabWidget( this );
  layout->addWidget( d->mSearchLine );
  layout->addWidget( d->mTabWidget );
  setLayout( layout );

  d->mTabWidget->setFocus( Qt::OtherFocusReason );

  connect( d->mTabWidget, SIGNAL( currentChanged( int ) ),
           this, SIGNAL( currentTaskViewChanged() ) );
  connect( d->mTabWidget, SIGNAL( currentChanged( int ) ),
           this, SLOT( slotCurrentChanged() ) );
  connect( d->mTabWidget, SIGNAL( mouseDoubleClick() ),
           this, SLOT( newFile() ) );

  showSearchBar( !KTimeTrackerSettings::configPDA() );
  showTabBar( false );
}

TimetrackerWidget::~TimetrackerWidget()
{
  if ( d->mRecentFilesAction ) {
    d->mRecentFilesAction->saveEntries( KGlobal::config()->group( "Recent Files" ) );
  }

  delete d;
}

bool TimetrackerWidget::allEventsHaveEndTiMe()
{
  bool result=true;
  TaskView *taskView;
  for ( int i = 0; i < d->mTabWidget->count(); ++i )
  {
    taskView = qobject_cast< TaskView* >( d->mTabWidget->widget( i ) );
    if ( !taskView->allEventsHaveEndTiMe() ) result=false;
  }
  return result;
}

void TimetrackerWidget::saveProperties( KConfigGroup &cfg )
{
  cfg.writeEntry( "WindowShown", isVisible());
}

void TimetrackerWidget::readProperties( const KConfigGroup &cfg )
{
  if( cfg.readEntry( "WindowShown", true ))
    show();
}

int TimetrackerWidget::focusSearchBar()
{
  kDebug(5970) << "Entering function";
  if ( d->mSearchWidget->isVisible() ) d->mSearchWidget->setFocus();
  return 0;
}

void TimetrackerWidget::addTaskView( const QString &fileName )
{
  kDebug(5970) << "Entering function (fileName=" << fileName << ")";
  bool isNew = fileName.isEmpty();
  QString lFileName = fileName;

  if ( isNew )
  {
    KTemporaryFile tempFile;
    tempFile.setAutoRemove( false );
    if ( tempFile.open() )
    {
      lFileName = tempFile.fileName();
      tempFile.close();
    }
    else
    {
      KMessageBox::error( this, i18n( "Cannot create new file." ) );
      return;
    }
  }

  TaskView *taskView = new TaskView( this );
  connect( taskView, SIGNAL( contextMenuRequested( const QPoint& ) ),
           this, SIGNAL( contextMenuRequested( const QPoint& ) ) );
  connect( taskView, SIGNAL( tasksChanged( const QList< Task* >& ) ),
           this, SLOT( updateTabs() ) );

  d->mTabWidget->addTab( taskView,
          isNew ? KIcon( "document-save" ) : KIcon( "ktimetracker" ),
          isNew ? i18n( "Untitled" ) : QFileInfo( lFileName ).fileName() );
  d->mTabWidget->setCurrentWidget( taskView );
  emit setCaption( fileName );
  taskView->load( lFileName );
  d->mSearchWidget->addTreeWidget( taskView );

  if ( isNew )
  {
    d->mIsNewVector.append( taskView );
  } else
  {
    // FIXME does not work for the startup page
    d->mTabWidget->setTabToolTip( d->mTabWidget->currentIndex(), lFileName );
  }

  // When adding the first tab currentChanged is not emitted, so...
  if ( !d->mLastView )
  {
    emit currentTaskViewChanged();
    slotCurrentChanged();
  }

  if ( d->mTabWidget->count() > 1 )
  {
    showTabBar( true );
  }
}

bool TimetrackerWidget::saveCurrentTaskView()
{
  QString fileName = KFileDialog::getSaveFileName( QString(), QString(), this );
  if ( !fileName.isEmpty() )
  {
    TaskView *taskView = qobject_cast< TaskView* >( d->mTabWidget->currentWidget() );
    taskView->stopAllTimers();
    taskView->save();
    taskView->closeStorage();

    QString currentFilename = taskView->storage()->icalfile();
    KIO::file_move( currentFilename, fileName, -1, KIO::Overwrite | KIO::HideProgressInfo );
    d->mIsNewVector.remove( d->mIsNewVector.indexOf( taskView ) );

    taskView->load( fileName );
    KIO::file_delete( currentFilename, KIO::HideProgressInfo );

    d->mTabWidget->setTabIcon( d->mTabWidget->currentIndex(), KIcon( "karm" ) );
    d->mTabWidget->setTabText( d->mTabWidget->currentIndex(), QFileInfo( fileName ).fileName() );
    d->mTabWidget->setTabToolTip( d->mTabWidget->currentIndex(), fileName );

    return true;
  }

  return false;
}

TaskView* TimetrackerWidget::currentTaskView()
{
  return qobject_cast< TaskView* >( d->mTabWidget->currentWidget() );
}

Task* TimetrackerWidget::currentTask()
{
  TaskView *taskView = 0;
  if ( ( taskView = qobject_cast< TaskView* >( d->mTabWidget->currentWidget() ) ) )
  {
    return taskView->currentItem();
  }
  else
  {
    return 0;
  }
}

void TimetrackerWidget::setupActions( KActionCollection *actionCollection )
{
  d->mActions.insert( "file_new",
    KStandardAction::openNew( this, SLOT( newFile() ), actionCollection ) );
  d->mActions[ "file_new" ]->setIcon( KIcon( "tab-new" ) );

  d->mActions.insert ("file_open",
    KStandardAction::open( this, SLOT( openFile() ), actionCollection ) );

  d->mRecentFilesAction = KStandardAction::openRecent(
      this, SLOT( openFile( const KUrl & ) ), this );
  actionCollection->addAction( d->mRecentFilesAction->objectName(),
                               d->mRecentFilesAction );
  d->mRecentFilesAction->loadEntries( KGlobal::config()->group( "Recent Files" ) );

  d->mActions.insert ("file_save",
    KStandardAction::save( this, SLOT( saveFile() ), actionCollection ) );
  d->mActions.insert ("file_close",
    KStandardAction::close( this, SLOT( closeFile() ), actionCollection ) );
  d->mActions.insert ("file_quit",
    KStandardAction::quit( this, SLOT( quit() ), actionCollection ) );
  d->mActions.insert ("configure_ktimetracker",
    KStandardAction::preferences( this, SLOT( showSettingsDialog() ),
                                  actionCollection ) );

  Private::ActionData actions[] = {
    { QString(), I18N_NOOP("Start &New Session"), SLOT( startNewSession() ),
      "start_new_session", I18N_NOOP("Starts a new session"), I18N_NOOP("This will reset the "
      "session time to 0 for all tasks, to start a new session, without "
      "affecting the totals.") },
    { "view-history", I18N_NOOP("Edit History..."), SLOT( editHistory() ), "edit_history",
      I18N_NOOP("Edits history of all tasks of the current document"), I18N_NOOP("A window will "
      "be opened where you can change start and stop times of tasks or add a "
      "comment to them.") },
    { QString(), I18N_NOOP("&Reset All Times"), SLOT( resetAllTimes() ),
      "reset_all_times", I18N_NOOP("Resets all times"), I18N_NOOP("This will reset the session "
      "and total time to 0 for all tasks, to restart from scratch.") },
    { "media-playback-start", I18N_NOOP("&Start"), SLOT( startCurrentTimer() ), "start",
      I18N_NOOP("Starts timing for selected task"), I18N_NOOP("This will start timing for the "
      "selected task.\nIt is even possible to time several tasks "
      "simultanously.\n\nYou may also start timing of tasks by double clicking "
      "the left mouse button on a given task. This will, however, stop timing "
      "of other tasks.") },
    { "media-playback-stop", I18N_NOOP("S&top"), SLOT( stopCurrentTimer() ), "stop",
      I18N_NOOP("Stops timing of the selected task"), I18N_NOOP("Stops timing of the selected task") },
    { QString(), I18N_NOOP("Focus on searchbar"), SLOT( focusSearchBar() ), "focusSearchBar",
      I18N_NOOP("Sets the focus on the searchbar"), I18N_NOOP("Sets the focus on the searchbar") },
    { QString(), I18N_NOOP("Stop &All Timers"), SLOT( stopAllTimers() ), "stopAll",
      I18N_NOOP("Stops all of the active timers"), I18N_NOOP("Stops all of the active timers") },
    { QString(), I18N_NOOP("Track Active Applications"), SLOT( focusTracking() ),
      "focustracking", I18N_NOOP("Auto-creates and updates tasks when the focus of the "
       "current window has changed"), I18N_NOOP("If the focus of a window changes for the "
       "first time when this action is enabled, a new task will be created "
       "with the title of the window as its name and will be started. If there "
       "already exists such an task it will be started.") },
    { "document-new", I18N_NOOP("&New Task..."), SLOT( newTask() ), "new_task", I18N_NOOP("Creates "
      "new top level task"), I18N_NOOP("This will create a new top level task.") },
    { "subtask-new-ktimetracker", I18N_NOOP("New &Subtask..."), SLOT( newSubTask() ),
      "new_sub_task", I18N_NOOP("Creates a new subtask to the current selected task"),
      I18N_NOOP("This will create a new subtask to the current selected task.") },
    { "edit-delete", I18N_NOOP("&Delete"), SLOT( deleteTask() ), "delete_task", I18N_NOOP("Deletes "
      "selected task"), I18N_NOOP("This will delete the selected task(s) and all "
      "subtasks.") },
    { "document-properties", I18N_NOOP("&Edit..."), SLOT( editTask() ), "edit_task",
      I18N_NOOP("Edits name or times for selected task"), I18N_NOOP("This will bring up a dialog "
      "box where you may edit the parameters for the selected task.") },
    { QString(), I18N_NOOP("&Mark as Complete"), SLOT( markTaskAsComplete() ),
      "mark_as_complete", "", "" },
    { QString(), I18N_NOOP("&Mark as Incomplete"), SLOT( markTaskAsIncomplete() ),
      "mark_as_incomplete", "", "" },
    { QString(), I18N_NOOP("&Export Times..."), SLOT( exportcsvFile() ), "export_times",
      "", "" },
    { QString(), I18N_NOOP("Export &History..."), SLOT( exportcsvHistory() ),
      "export_history", "", "" },
    { QString(), I18N_NOOP("Import Tasks From &Planner..."), SLOT( importPlanner() ),
      "import_planner", "", "" },
    { QString(), I18N_NOOP("Show Searchbar"), SLOT( slotSearchBar() ), "searchbar",
      "", "" }
  };

  for ( unsigned int i = 0;
        i < ( sizeof( actions ) / sizeof( Private::ActionData ) ); ++i )
  {
    Private::ActionData actionData = actions[i];
    KAction *action;
    if ( actionData.iconName.isEmpty() )
    {
      action = new KAction( i18n( actionData.caption ), this );
    } else
    {
      action = new KAction( KIcon( actionData.iconName ),
                            i18n( actionData.caption ), this );
    }

    actionCollection->addAction( actionData.name, action );
    connect( action, SIGNAL( triggered( bool ) ), actionData.slot );
    action->setToolTip( i18n( actionData.toolTip ) );
    action->setWhatsThis( i18n( actionData.whatsThis ) );

    d->mActions.insert( actionData.name, action );
  }

  // custom shortcuts
  d->mActions[ "stopAll" ]->setShortcut( QKeySequence( Qt::Key_Escape ) );
  d->mActions[ "new_task" ]->setShortcut( QKeySequence( Qt::CTRL + Qt::Key_T ) );
  d->mActions[ "focusSearchBar" ]->setShortcut( QKeySequence( Qt::Key_S ) );
  d->mActions[ "new_sub_task" ]->setShortcut( QKeySequence( Qt::CTRL + Qt::ALT + Qt::Key_N ) );
  d->mActions[ "delete_task" ]->setShortcut( QKeySequence( Qt::Key_Delete ) );
  d->mActions[ "edit_task" ]->setShortcut( QKeySequence( Qt::CTRL + Qt::Key_E ) );
  d->mActions[ "mark_as_complete" ]->setShortcut( QKeySequence( Qt::CTRL + Qt::Key_M ) );
  d->mActions[ "mark_as_incomplete" ]->setShortcut( QKeySequence( Qt::CTRL + Qt::Key_M ) );

  d->mActions[ "mark_as_complete" ]->setIcon( UserIcon( "task-complete.xpm" ) );
  d->mActions[ "mark_as_incomplete" ]->setIcon( UserIcon( "task-incomplete.xpm" ) );

  d->mActions[ "focustracking" ]->setCheckable( true );
  d->mActions[ "searchbar" ]->setCheckable( true );

  d->mActions[ "searchbar" ]->setChecked( KTimeTrackerSettings::self()->showSearchBar() );

  connect( this, SIGNAL( currentTaskChanged() ),
           this, SLOT( slotUpdateButtons() ) );
  connect( this, SIGNAL( currentTaskViewChanged() ),
           this, SLOT( slotUpdateButtons() ) );
  connect( this, SIGNAL( updateButtons() ),
           this, SLOT( slotUpdateButtons() ) );

  slotUpdateButtons();
}

KAction* TimetrackerWidget::action( const QString &name ) const
{
  return d->mActions.value( name );
}

void TimetrackerWidget::newFile()
{
  addTaskView();
}

void TimetrackerWidget::openFile( const QString &fileName )
{
  QString newFileName = fileName;
  if ( newFileName.isEmpty() )
  {
    newFileName = KFileDialog::getOpenFileName( QString(), QString(),
                                                        this );
    if ( newFileName.isEmpty() )
    {
      return;
    }
  }

  if ( d->mRecentFilesAction )
  {
    d->mRecentFilesAction->addUrl( newFileName );
  }
  addTaskView( newFileName );
}

void TimetrackerWidget::openFile( const KUrl &fileName )
{
  openFile( fileName.path() );
}

bool TimetrackerWidget::closeFile()
{
  kDebug(5970) << "Entering TimetrackerWidget::closeFile";
  TaskView *taskView = qobject_cast< TaskView* >( d->mTabWidget->currentWidget() );

  // is it an unsaved file?
  if ( d->mIsNewVector.contains( taskView ) )
  {
    QString message = i18n( "This document has not been saved yet. Do you want to save it?" );
    QString caption = i18n( "Untitled" );

    int result = KMessageBox::questionYesNoCancel( this, message, caption );

    if ( result == KMessageBox::Cancel )
    {
      return false;
    }

    if ( result == KMessageBox::Yes )
    {
      if ( !saveCurrentTaskView() )
      {
        return false;
      }
    }
    else
    { // result == No
      d->mIsNewVector.remove( d->mIsNewVector.indexOf( taskView ) );
    }
  }

  taskView->save();
  taskView->closeStorage();

  d->mTabWidget->removeTab( d->mTabWidget->currentIndex() );
  d->mSearchWidget->removeTreeWidget( taskView );

  /* emit signals and call slots since currentChanged is not emitted if
   * we close the last tab
   */
  if ( d->mTabWidget->count() == 0 )
  {
    emit currentTaskViewChanged();
    emit setCaption( QString() );
    slotCurrentChanged();
  }

  /* hide the tabbar if there's only one tab left */
  if ( d->mTabWidget->count() < 2 )
  {
    showTabBar( false );
  }

  delete taskView; // removeTab does not delete its widget.
  return true;
}

void TimetrackerWidget::saveFile()
{
  TaskView *taskView = qobject_cast< TaskView* >( d->mTabWidget->currentWidget() );

  // is it an unsaved file?
  if ( d->mIsNewVector.contains( taskView ) )
  {
    saveCurrentTaskView();
  }

  taskView->save();

  // TODO get eventually error message from save and emit
  // a error message signal.
}

void TimetrackerWidget::showTabBar( bool visible )
{
  d->mTabWidget->setTabBarHidden( !visible );
}

void TimetrackerWidget::reconfigureFiles()
{
  kDebug(5970) << "Entering function";
  TaskView *taskView;
  for ( int i = 0; i < d->mTabWidget->count(); ++i )
  {
    taskView = qobject_cast< TaskView* >( d->mTabWidget->widget( i ) );

    taskView->reconfigure();
  }
}

void TimetrackerWidget::showSearchBar( bool visible )
{
  d->mSearchLine->setVisible( visible );
}

bool TimetrackerWidget::closeAllFiles()
{
  kDebug(5970) << "Entering TimetrackerWidget::closeAllFiles";
  while ( d->mTabWidget->count() > 0 )
  {
    TaskView *taskView = qobject_cast< TaskView* >( d->mTabWidget->widget( 0 ) );
    d->mTabWidget->setCurrentWidget( taskView );
    if ( !( closeFile() ) )
      return false;
  }
  return true;
}

void TimetrackerWidget::slotCurrentChanged()
{
  kDebug() << "entering KTimetrackerWidget::slotCurrentChanged";

  if ( d->mLastView )
  {
    disconnect( d->mLastView, SIGNAL( totalTimesChanged( long, long ) ) );
    disconnect( d->mLastView, SIGNAL( reSetTimes() ) );
    disconnect( d->mLastView, SIGNAL( itemSelectionChanged() ) );
    disconnect( d->mLastView, SIGNAL( updateButtons() ) );
    disconnect( d->mLastView, SIGNAL( setStatusBarText( QString ) ) );
    disconnect( d->mLastView, SIGNAL( timersActive() ) );
    disconnect( d->mLastView, SIGNAL( timersInactive() ) );
    disconnect( d->mLastView, SIGNAL( tasksChanged( const QList< Task* >& ) ),
                this, SIGNAL( tasksChanged( const QList< Task* > & ) ) );
  }

  d->mLastView = qobject_cast< TaskView* >( d->mTabWidget->currentWidget() );

  if ( d->mLastView )
  {
    connect( d->mLastView, SIGNAL( totalTimesChanged( long, long ) ),
            this, SIGNAL( totalTimesChanged( long, long ) ) );
    connect( d->mLastView, SIGNAL( reSetTimes() ),
            this, SIGNAL( reSetTimes() ) );
    connect( d->mLastView, SIGNAL( itemSelectionChanged() ),
            this, SIGNAL( currentTaskChanged() ) );
    connect( d->mLastView, SIGNAL( updateButtons() ),
            this, SIGNAL( updateButtons() ) );
    connect( d->mLastView, SIGNAL( setStatusBarText( QString ) ), // FIXME signature
            this, SIGNAL( statusBarTextChangeRequested( const QString & ) ) );
    connect( d->mLastView, SIGNAL( timersActive() ),
            this, SIGNAL( timersActive() ) );
    connect( d->mLastView, SIGNAL( timersInactive() ),
            this, SIGNAL( timersInactive() ) );
    connect( d->mLastView, SIGNAL( tasksChanged( QList< Task* > ) ), // FIXME signature
            this, SIGNAL( tasksChanged( const QList< Task* > &) ) );
    emit setCaption( d->mLastView->storage()->icalfile() );
  }

  d->mSearchWidget->setEnabled( d->mLastView );
}

void TimetrackerWidget::updateTabs()
{
  kDebug(5970) << "Entering function";
  TaskView *taskView;
  for ( int i = 0; i < d->mTabWidget->count(); ++i )
  {
    taskView = qobject_cast< TaskView* >( d->mTabWidget->widget( i ) );

    if ( taskView->activeTasks().count() == 0 )
    {
      d->mTabWidget->setTabTextColor( i, palette().color( QPalette::Foreground ) );
    }
    else
    {
      d->mTabWidget->setTabTextColor( i, Qt::darkGreen );
    }
  }
  kDebug(5970) << "Leaving function";
}

bool TimetrackerWidget::eventFilter( QObject *obj, QEvent *event )
{
  if ( obj == d->mSearchWidget )
  {
    if ( event->type() == QEvent::KeyPress )
    {
      QKeyEvent *keyEvent = static_cast< QKeyEvent* >( event );
      if ( keyEvent->key() == Qt::Key_Enter ||
           keyEvent->key() == Qt::Key_Return )
      {
        if ( !d->mSearchWidget->displayText().isEmpty() ) slotAddTask( d->mSearchWidget->displayText() );
        return true;
      }
    }
  }

  return QObject::eventFilter( obj, event );
}

void TimetrackerWidget::slotAddTask( const QString &taskName )
{
  TaskView *taskView = qobject_cast< TaskView* >( d->mTabWidget->currentWidget() );

  taskView->addTask( taskName, 0, 0, DesktopList(), 0 );

  d->mSearchWidget->clear();
  d->mTabWidget->setFocus( Qt::OtherFocusReason );
}

void TimetrackerWidget::slotUpdateButtons()
{
  kDebug(5970) << "Entering function";
  Task *item = currentTask();

  d->mActions[ "start" ]->setEnabled( item && !item->isRunning() &&
      !item->isComplete() );
  d->mActions[ "stop" ]->setEnabled( item && item->isRunning() );
  d->mActions[ "delete_task" ]->setEnabled( item );
  d->mActions[ "edit_task" ]->setEnabled( item );
  d->mActions[ "mark_as_complete" ]->setEnabled( item && !item->isComplete() );
  d->mActions[ "mark_as_incomplete" ]->setEnabled( item && item->isComplete() );

  d->mActions[ "new_task" ]->setEnabled( currentTaskView() );
  d->mActions[ "new_sub_task" ]->setEnabled( currentTaskView() && currentTaskView()->count() );
  d->mActions[ "focustracking" ]->setEnabled( currentTaskView() );
  d->mActions[ "focustracking" ]->setChecked( currentTaskView() &&
      currentTaskView()->isFocusTrackingActive() );
  d->mActions[ "start_new_session" ]->setEnabled( currentTaskView() );
  d->mActions[ "edit_history" ]->setEnabled( currentTaskView() );
  d->mActions[ "reset_all_times" ]->setEnabled( currentTaskView() );
  d->mActions[ "export_times" ]->setEnabled( currentTaskView() );
  d->mActions[ "export_history" ]->setEnabled( currentTaskView() );
  d->mActions[ "import_planner" ]->setEnabled( currentTaskView() );
  d->mActions[ "file_save" ]->setEnabled( currentTaskView() );
  d->mActions[ "file_close" ]->setEnabled( currentTaskView() );
  kDebug(5970) << "Leaving function";
}

void TimetrackerWidget::showSettingsDialog()
{
  kDebug(5970) << "Entering function";
  /* show main window b/c if this method was started from tray icon and the window
     is not visible the application quits after accepting the settings dialog.
  */
  window()->show();

  KConfigDialog *dialog = new KConfigDialog(
    this, "settings", KTimeTrackerSettings::self() );

  Ui::BehaviorPage *behaviorUi = new Ui::BehaviorPage;
  QWidget *behaviorPage = new QWidget;
  behaviorUi->setupUi( behaviorPage );
  dialog->addPage( behaviorPage, i18n( "Behavior" ), "preferences-other" );

  Ui::DisplayPage *displayUi = new Ui::DisplayPage;
  QWidget *displayPage = new QWidget;
  displayUi->setupUi( displayPage );
  dialog->addPage( displayPage,
                   i18nc( "settings page for customizing user interface",
                          "Appearance" ),
                          "preferences-desktop-theme" );

  Ui::StoragePage *storageUi = new Ui::StoragePage;
  QWidget *storagePage = new QWidget;
  storageUi->setupUi( storagePage );
  dialog->addPage( storagePage, i18n( "Storage" ), "system-file-manager" );

  dialog->exec();
  delete dialog;
  showSearchBar( !KTimeTrackerSettings::configPDA() );
  reconfigureFiles();
}

//BEGIN wrapper slots
void TimetrackerWidget::startCurrentTimer()
{
  if ( d->mTabWidget->currentWidget() ) {
    qobject_cast< TaskView* >( d->mTabWidget->currentWidget() )->startCurrentTimer();
  }
}

void TimetrackerWidget::stopCurrentTimer()
{
  if ( d->mTabWidget->currentWidget() ) {
    qobject_cast< TaskView* >( d->mTabWidget->currentWidget() )->stopCurrentTimer();
  }
}

void TimetrackerWidget::stopAllTimers( const QDateTime &when )
{
  if ( d->mTabWidget->currentWidget() ) {
    qobject_cast< TaskView* >( d->mTabWidget->currentWidget() )->stopAllTimers( when );
  }
}

void TimetrackerWidget::newTask()
{
  if ( d->mTabWidget->currentWidget() ) {
    qobject_cast< TaskView* >( d->mTabWidget->currentWidget() )->newTask();
  }
}

void TimetrackerWidget::newSubTask()
{
  if ( d->mTabWidget->currentWidget() ) {
    qobject_cast< TaskView* >( d->mTabWidget->currentWidget() )->newSubTask();
  }
}

void TimetrackerWidget::editTask()
{
  if ( d->mTabWidget->currentWidget() ) {
    qobject_cast< TaskView* >( d->mTabWidget->currentWidget() )->editTask();
  }
}

void TimetrackerWidget::deleteTask()
{
  if ( d->mTabWidget->currentWidget() ) {
    qobject_cast< TaskView* >( d->mTabWidget->currentWidget() )->deleteTask();
  }
}

void TimetrackerWidget::markTaskAsComplete()
{
  if ( d->mTabWidget->currentWidget() ) {
    qobject_cast< TaskView* >( d->mTabWidget->currentWidget() )->markTaskAsComplete();
  }
}

void TimetrackerWidget::markTaskAsIncomplete()
{
  if ( d->mTabWidget->currentWidget() ) {
    qobject_cast< TaskView* >( d->mTabWidget->currentWidget() )->markTaskAsIncomplete();
  }
}

void TimetrackerWidget::exportcsvFile()
{
  if ( d->mTabWidget->currentWidget() ) {
    qobject_cast< TaskView* >( d->mTabWidget->currentWidget() )->exportcsvFile();
  }
}

void TimetrackerWidget::exportcsvHistory()
{
  if ( d->mTabWidget->currentWidget() ) {
    qobject_cast< TaskView* >( d->mTabWidget->currentWidget() )->exportcsvHistory();
  }
}

void TimetrackerWidget::importPlanner( const QString &fileName )
{
  if ( d->mTabWidget->currentWidget() ) {
    qobject_cast< TaskView* >( d->mTabWidget->currentWidget() )->importPlanner( fileName );
  }
}

void TimetrackerWidget::startNewSession()
{
  if ( d->mTabWidget->currentWidget() ) {
    qobject_cast< TaskView* >( d->mTabWidget->currentWidget() )->startNewSession();
  }
}

void TimetrackerWidget::editHistory()
{
  if ( d->mTabWidget->currentWidget() )
  {
    EditHistoryDialog *dlg = new EditHistoryDialog( qobject_cast< TaskView* >( d->mTabWidget->currentWidget() ) );
    if (currentTaskView()->storage()->rawevents().count()!=0) dlg->exec();
    else KMessageBox::information(0, i18nc("@info in message box", "There is no history yet. Start and stop a task and you will have an entry in your history."));
  }
}

void TimetrackerWidget::resetAllTimes()
{
  if ( d->mTabWidget->currentWidget() ) {
    if ( KMessageBox::warningContinueCancel( this,
         i18n( "Do you really want to reset the time to zero for all tasks?" ),
         i18n( "Confirmation Required" ), KGuiItem( i18n( "Reset All Times" ) ) ) == KMessageBox::Continue )
      currentTaskView()->resetTimeForAllTasks();
  }
}

void TimetrackerWidget::focusTracking()
{
  if ( d->mTabWidget->currentWidget() ) {
    currentTaskView()->toggleFocusTracking();
    d->mActions[ "focustracking" ]->setChecked(
      currentTaskView()->isFocusTrackingActive() );
  }
}

void TimetrackerWidget::slotSearchBar()
{
  bool currentVisible = KTimeTrackerSettings::self()->showSearchBar();
  KTimeTrackerSettings::self()->setShowSearchBar( !currentVisible );
  d->mActions[ "searchbar" ]->setChecked( !currentVisible );
  showSearchBar( !currentVisible );
}
//END

//BEGIN dbus slots
QString TimetrackerWidget::version() const
{
  return KTIMETRACKER_VERSION;
}

QStringList TimetrackerWidget::taskIdsFromName( const QString &taskName ) const
{
  QStringList result;

  for ( int i = 0; i < d->mTabWidget->count(); ++i) {
    TaskView *taskView = qobject_cast< TaskView* >( d->mTabWidget->widget( i ) );

    if ( !taskView ) continue;

    QTreeWidgetItemIterator it( taskView );
    while ( *it ) {
      Task *task = static_cast< Task* >( *it );
      if ( task && task->name() == taskName ) {
        result << task->uid();
      }
      ++it;
    }
  }

  return result;
}

void TimetrackerWidget::addTask( const QString &taskName )
{
  TaskView *taskView = qobject_cast< TaskView* >( d->mTabWidget->currentWidget() );

  if ( taskView )
  {
    taskView->addTask( taskName, 0, 0, DesktopList(), 0 );
  }
}

void TimetrackerWidget::addSubTask( const QString& taskName, const QString &taskId )
{
  TaskView *taskView = qobject_cast< TaskView* >( d->mTabWidget->currentWidget() );

  if ( taskView )
  {
    taskView->addTask( taskName, 0, 0, DesktopList(), taskView->task( taskId) );
    taskView->refresh();
  }
}

void TimetrackerWidget::deleteTask( const QString &taskId )
{
  for ( int i = 0; i < d->mTabWidget->count(); ++i)
  {
    TaskView *taskView = qobject_cast< TaskView* >( d->mTabWidget->widget( i ) );

    if ( !taskView ) continue;

    QTreeWidgetItemIterator it( taskView );
    while ( *it )
    {
      Task *task = static_cast< Task* >( *it );
      if ( task && task->uid() == taskId )
      {
        taskView->deleteTaskBatch( task );
      }
      ++it;
    }
  }
}

void TimetrackerWidget::setPercentComplete( const QString &taskId, int percent )
{
  for ( int i = 0; i < d->mTabWidget->count(); ++i) {
    TaskView *taskView = qobject_cast< TaskView* >( d->mTabWidget->widget( i ) );

    if ( !taskView ) continue;

    QTreeWidgetItemIterator it( taskView );
    while ( *it ) {
      Task *task = static_cast< Task* >( *it );
      if ( task && task->uid() == taskId ) {
        task->setPercentComplete( percent, taskView->storage() );
      }
      ++it;
    }
  }
}

int TimetrackerWidget::bookTime( const QString &taskId, const QString &dateTime, int minutes )
{
  QDate startDate;
  QTime startTime;
  QDateTime startDateTime;
  Task *task = 0, *t = 0;

  if ( minutes <= 0 ) return KTIMETRACKER_ERR_INVALID_DURATION;

  // Find task
  for ( int i = 0; i < d->mTabWidget->count(); ++i ) {
    TaskView *taskView = qobject_cast< TaskView* >( d->mTabWidget->widget( i ) );

    if ( !taskView ) continue;

    QTreeWidgetItemIterator it( taskView );
    while ( *it ) {
      t = static_cast< Task* >( *it );
      if ( t && t->uid() == taskId ) {
        task = t;
        break;
      }
      ++it;
    }

    if ( task ) break;
  }

  if ( !task ) return KTIMETRACKER_ERR_UID_NOT_FOUND;

  // Parse datetime
  startDate = QDate::fromString( dateTime, Qt::ISODate );

  if ( dateTime.length() > 10 ) { // "YYYY-MM-DD".length() = 10
    startTime = QTime::fromString( dateTime, Qt::ISODate );
  } else startTime = QTime( 12, 0 );

  if ( startDate.isValid() && startTime.isValid() ) {
    startDateTime = QDateTime( startDate, startTime );
  } else return KTIMETRACKER_ERR_INVALID_DATE;

  // Update task totals (session and total) and save to disk
  task->changeTotalTimes( task->sessionTime() + minutes,
                          task->totalTime() + minutes );
  if ( !( task->taskView()->storage()->bookTime( task,
                                                 startDateTime,
                                                 minutes * 60 ) ) )
    return KTIMETRACKER_ERR_GENERIC_SAVE_FAILED;

  return 0;
}

QString TimetrackerWidget::error( int errorCode ) const
{
  switch ( errorCode ) {
    case KTIMETRACKER_ERR_GENERIC_SAVE_FAILED:
      return i18n( "Save failed, most likely because the file could not be locked." );
    case KTIMETRACKER_ERR_COULD_NOT_MODIFY_RESOURCE:
      return i18n( "Could not modify calendar resource." );
    case KTIMETRACKER_ERR_MEMORY_EXHAUSTED:
      return i18n( "Out of memory--could not create object." );
    case KTIMETRACKER_ERR_UID_NOT_FOUND:
      return i18n( "UID not found." );
    case KTIMETRACKER_ERR_INVALID_DATE:
      return i18n( "Invalidate date--format is YYYY-MM-DD." );
    case KTIMETRACKER_ERR_INVALID_TIME:
      return i18n( "Invalid time--format is YYYY-MM-DDTHH:MM:SS." );
    case KTIMETRACKER_ERR_INVALID_DURATION:
      return i18n( "Invalid task duration--must be greater than zero." );
    default:
      return i18n( "Invalid error number: %1", errorCode );
  }
}

int TimetrackerWidget::totalMinutesForTaskId( const QString &taskId ) const
{
  for ( int i = 0; i < d->mTabWidget->count(); ++i ) {
    TaskView *taskView = qobject_cast< TaskView* >( d->mTabWidget->widget( i ) );

    if ( !taskView ) continue;

    QTreeWidgetItemIterator it( taskView );
    while ( *it ) {
      Task *task = static_cast< Task* >( *it );

      if ( task && task->uid() == taskId ) {
        return task->totalTime();
      }

      ++it;
    }
  }

  return -1;
}

void TimetrackerWidget::startTimerFor( const QString &taskId )
{
  kDebug();
  for ( int i = 0; i < d->mTabWidget->count(); ++i ) {
    TaskView *taskView = qobject_cast< TaskView* >( d->mTabWidget->widget( i ) );

    if ( !taskView ) continue;
    QTreeWidgetItemIterator it( taskView );
    while ( *it ) {
      Task *task = static_cast< Task* >( *it );
      if ( task && task->uid() == taskId ) {
        taskView->startTimerFor( task );
        return;
      }

      ++it;
    }
  }
}

bool TimetrackerWidget::startTimerForTaskName( const QString &taskName )
{
  for ( int i = 0; i < d->mTabWidget->count(); ++i ) {
    TaskView *taskView = qobject_cast< TaskView* >( d->mTabWidget->widget( i ) );

    if ( !taskView ) continue;
    QTreeWidgetItemIterator it( taskView );
    while ( *it ) {
      Task *task = static_cast< Task* >( *it );
      if ( task && task->name() == taskName ) {
        taskView->startTimerFor( task );
        return true;
      }
      ++it;
    }
  }
  return false;
}


bool TimetrackerWidget::stopTimerForTaskName( const QString &taskName )
{
  for ( int i = 0; i < d->mTabWidget->count(); ++i ) {
    TaskView *taskView = qobject_cast< TaskView* >( d->mTabWidget->widget( i ) );

    if ( !taskView ) continue;

    QTreeWidgetItemIterator it( taskView );
    while ( *it ) {
      Task *task = static_cast< Task* >( *it );

      if ( task && task->name() == taskName ) {
        taskView->stopTimerFor( task );
        return true;
      }

      ++it;
    }
  }
  return false;
}


void TimetrackerWidget::stopTimerFor( const QString &taskId )
{
  for ( int i = 0; i < d->mTabWidget->count(); ++i ) {
    TaskView *taskView = qobject_cast< TaskView* >( d->mTabWidget->widget( i ) );

    if ( !taskView ) continue;

    QTreeWidgetItemIterator it( taskView );
    while ( *it ) {
      Task *task = static_cast< Task* >( *it );

      if ( task && task->uid() == taskId ) {
        taskView->stopTimerFor( task );
        return;
      }

      ++it;
    }
  }
}

void TimetrackerWidget::stopAllTimersDBUS()
{
  for ( int i = 0; i < d->mTabWidget->count(); ++i ) {
    TaskView *taskView = qobject_cast< TaskView* >( d->mTabWidget->widget( i ) );

    if ( !taskView ) continue;

    taskView->stopAllTimers();
  }
}

QString TimetrackerWidget::exportCSVFile( const QString &filename,
                                          const QString &from,
                                          const QString &to, int type,
                                          bool decimalMinutes,
                                          bool allTasks,
                                          const QString &delimiter,
                                          const QString &quote )
{
  TaskView *taskView = qobject_cast< TaskView* >( d->mTabWidget->currentWidget() );

  if ( !taskView ) return "";

  ReportCriteria rc;
  rc.url = filename;
  rc.from = QDate::fromString( from );
  if ( rc.from.isNull() )
    rc.from = QDate::fromString( from, Qt::ISODate );
  rc.to = QDate::fromString( to );
  if ( rc.to.isNull() )
    rc.to = QDate::fromString( to, Qt::ISODate );
  rc.reportType = ( ReportCriteria::REPORTTYPE )type;
  rc.decimalMinutes = decimalMinutes;
  rc.allTasks = allTasks;
  rc.delimiter = delimiter;
  rc.quote = quote;

  return taskView->report( rc );
}

void TimetrackerWidget::importPlannerFile( const QString &filename )
{
  TaskView *taskView = qobject_cast< TaskView* >( d->mTabWidget->currentWidget() );

  if ( !taskView ) return;

  taskView->importPlanner( filename );
}

bool TimetrackerWidget::isActive( const QString &taskId ) const
{
  for ( int i = 0; i < d->mTabWidget->count(); ++i ) {
    TaskView *taskView = qobject_cast< TaskView* >( d->mTabWidget->widget( i ) );

    if ( !taskView ) continue;

    QTreeWidgetItemIterator it( taskView );
    while ( *it ) {
      Task *task = static_cast< Task* >( *it );

      if ( task && task->uid() == taskId ) {
        return task->isRunning();
      }

      ++it;
    }
  }

  return false;
}


bool TimetrackerWidget::isTaskNameActive( const QString &taskName ) const
{
  for ( int i = 0; i < d->mTabWidget->count(); ++i ) {
    TaskView *taskView = qobject_cast< TaskView* >( d->mTabWidget->widget( i ) );

    if ( !taskView ) continue;

    QTreeWidgetItemIterator it( taskView );
    while ( *it ) {
      Task *task = static_cast< Task* >( *it );

      if ( task && task->name() == taskName ) {
        return task->isRunning();
      }

      ++it;
    }
  }

  return false;
}


QStringList TimetrackerWidget::tasks() const
{
  QStringList result;

  for ( int i = 0; i < d->mTabWidget->count(); ++i ) {
    TaskView *taskView = qobject_cast< TaskView* >( d->mTabWidget->widget( i ) );

    if ( !taskView ) continue;

    QTreeWidgetItemIterator it( taskView );
    while ( *it ) {
      result << static_cast< Task* >( *it )->name();
      ++it;
    }
  }

  return result;
}

QStringList TimetrackerWidget::activeTasks() const
{
  QStringList result;

  for ( int i = 0; i < d->mTabWidget->count(); ++i ) {
    TaskView *taskView = qobject_cast< TaskView* >( d->mTabWidget->widget( i ) );

    if ( !taskView ) continue;

    for ( int j = 0; j < taskView->count(); ++j ) {
      if ( taskView->itemAt( j )->isRunning() ) {
        result << taskView->itemAt( j )->name();
      }
    }
  }

  return result;
}

void TimetrackerWidget::saveAll()
{
  for ( int i = 0; i < d->mTabWidget->count(); ++i ) {
    TaskView *taskView = qobject_cast< TaskView* >( d->mTabWidget->widget( i ) );

    if ( !taskView ) continue;

    // is it an unsaved file?
    if ( d->mIsNewVector.contains( taskView ) )
    {
      saveCurrentTaskView();
    }

    taskView->save();
  }
}

bool TimetrackerWidget::event ( QEvent * event ) // inherited from QWidget
{
  if (event->type()==QEvent::QueryWhatsThis)
  {
    if ( d->mLastView->count() == 0 )
      setWhatsThis( i18n("This is ktimetracker, KDE's program to help you track your time. Best, start with creating your first task - enter it into the field where you see \"search or add task\".") );
    else setWhatsThis( i18n("You have already created a task. You can now start and stop timing") );
  }
  return QWidget::event(event);
}

void TimetrackerWidget::quit()
{
  kDebug(5970) << "Entering TimetrackerWidget::quit";
  if ( closeAllFiles() )
  {
    kapp->quit();
  }
}
//END

#include "timetrackerwidget.moc"
