koeditorfreebusy.cpp

/*
    This file is part of KOrganizer.
 
    Copyright (c) 2001,2004 Cornelius Schumacher <schumacher@kde.org>
 
    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.
 
    As a special exception, permission is given to link this program
    with any edition of TQt, and distribute the resulting executable,
    without including the source code for TQt in the source distribution.
*/
 
#include <tqtooltip.h>
#include <tqlayout.h>
#include <tqlabel.h>
#include <tqcombobox.h>
#include <tqpushbutton.h>
#include <tqvaluevector.h>
#include <tqwhatsthis.h>
 
#include <kdebug.h>
#include <tdelocale.h>
#include <kiconloader.h>
#include <tdemessagebox.h>
 
#ifndef KORG_NOKABC
#include <tdeabc/addresseedialog.h>
#include <tdeabc/vcardconverter.h>
#include <libtdepim/addressesdialog.h>
#include <libtdepim/addresseelineedit.h>
#include <libtdepim/distributionlist.h>
#include <tdeabc/stdaddressbook.h>
#endif
 
#include <libkcal/event.h>
#include <libkcal/freebusy.h>
 
#include <libemailfunctions/email.h>
 
#include <kdgantt/KDGanttView.h>
#include <kdgantt/KDGanttViewTaskItem.h>
#include <kdgantt/KDGanttViewSubwidgets.h>
 
#include "koprefs.h"
#include "koglobals.h"
#include "kogroupware.h"
#include "freebusymanager.h"
#include "freebusyurldialog.h"
 
#include "koeditorfreebusy.h"
 
// The FreeBusyItem is the whole line for a given attendee.
// Individual "busy" periods are created as sub-items of this item.
//
// We can't use the CustomListViewItem base class, since we need a
// different inheritance hierarchy for supporting the Gantt view.
class FreeBusyItem : public KDGanttViewTaskItem
{
  public:
    FreeBusyItem( Attendee *attendee, KDGanttView *parent ) :
      KDGanttViewTaskItem( parent, parent->lastItem() ), mAttendee( attendee ), mTimerID( 0 ),
      mIsDownloading( false )
    {
      Q_ASSERT( attendee );
      updateItem();
      setFreeBusyPeriods( 0 );
      setDisplaySubitemsAsGroup( true );
      if ( listView () )
          listView ()->setRootIsDecorated( false );
    }
    ~FreeBusyItem() {}
 
    void updateItem();
 
    Attendee *attendee() const { return mAttendee; }
    void setFreeBusy( KCal::FreeBusy *fb ) { mFreeBusy = fb; }
    KCal::FreeBusy* freeBusy() const { return mFreeBusy; }
 
    void setFreeBusyPeriods( FreeBusy *fb );
 
    TQString key( int column, bool ) const
    {
      TQMap<int,TQString>::ConstIterator it = mKeyMap.find( column );
      if ( it == mKeyMap.end() ) return listViewText( column );
      else return *it;
    }
 
    void setSortKey( int column, const TQString &key )
    {
      mKeyMap.insert( column, key );
    }
 
    TQString email() const { return mAttendee->email(); }
    void setUpdateTimerID( int id ) { mTimerID = id; }
    int updateTimerID() const { return mTimerID; }
 
    void startDownload( bool forceDownload ) {
      mIsDownloading = true;
      FreeBusyManager *m = KOGroupware::instance()->freeBusyManager();
      if ( !m->retrieveFreeBusy( attendee()->email(), forceDownload ) )
        mIsDownloading = false;
    }
    void setIsDownloading( bool d ) { mIsDownloading = d; }
    bool isDownloading() const { return mIsDownloading; }
 
  private:
    Attendee *mAttendee;
    KCal::FreeBusy *mFreeBusy;
 
    TQMap<int,TQString> mKeyMap;
 
    // This is used for the update timer
    int mTimerID;
 
    // Only run one download job at a time
    bool mIsDownloading;
};
 
void FreeBusyItem::updateItem()
{
  TQString text = mAttendee->name() + " <" + mAttendee->email() + '>';
  setListViewText( 0, text );
  switch ( mAttendee->status() ) {
    case Attendee::Accepted:
      setPixmap( 0, KOGlobals::self()->smallIcon( "ok" ) );
      break;
    case Attendee::Declined:
      setPixmap( 0, KOGlobals::self()->smallIcon( "no" ) );
      break;
    case Attendee::NeedsAction:
    case Attendee::InProcess:
      setPixmap( 0, KOGlobals::self()->smallIcon( "help" ) );
      break;
    case Attendee::Tentative:
      setPixmap( 0, KOGlobals::self()->smallIcon( "apply" ) );
      break;
    case Attendee::Delegated:
      setPixmap( 0, KOGlobals::self()->smallIcon( "mail-forward" ) );
      break;
    default:
      setPixmap( 0, TQPixmap() );
  }
}
 
 
// Set the free/busy periods for this attendee
void FreeBusyItem::setFreeBusyPeriods( FreeBusy* fb )
{
  if( fb ) {
    // Clean out the old entries
    for( KDGanttViewItem* it = firstChild(); it; it = firstChild() )
      delete it;
 
    // Evaluate free/busy information
    TQValueList<KCal::Period> busyPeriods = fb->busyPeriods();
    for( TQValueList<KCal::Period>::Iterator it = busyPeriods.begin();
     it != busyPeriods.end(); ++it ) {
      Period per = *it;
 
      KDGanttViewTaskItem *newSubItem = new KDGanttViewTaskItem( this );
      newSubItem->setStartTime( per.start() );
      newSubItem->setEndTime( per.end() );
      newSubItem->setColors( TQt::red, TQt::red, TQt::red );
 
      TQString toolTip = "<qt>";
      toolTip += "<b>" + i18n( "Freebusy Period" ) + "</b>";
      toolTip += "<br>----------------------<br>";
      if ( !per.summary().isEmpty() ) {
        toolTip += "<i>" + i18n( "Summary:" ) + "</i>" + "&nbsp;";
        toolTip += per.summary();
        toolTip += "<br>";
      }
      if ( !per.location().isEmpty() ) {
        toolTip += "<i>" + i18n( "Location:" ) + "</i>" + "&nbsp;";
        toolTip += per.location();
        toolTip += "<br>";
      }
      toolTip += "<i>" + i18n( "Start:" ) + "</i>" + "&nbsp;";
      toolTip += TDEGlobal::locale()->formatDateTime( per.start() );
      toolTip += "<br>";
      toolTip += "<i>" + i18n( "End:" ) + "</i>" + "&nbsp;";
      toolTip += TDEGlobal::locale()->formatDateTime( per.end() );
      toolTip += "<br>";
      toolTip += "</qt>";
      newSubItem->setTooltipText( toolTip );
    }
    setFreeBusy( fb );
    setShowNoInformation( false );
  } else {
      // No free/busy information
      //debug only start
      //   int ii ;
      //       TQDateTime cur = TQDateTime::currentDateTime();
      //       for( ii = 0; ii < 10 ;++ii ) {
      //           KDGanttViewTaskItem* newSubItem = new KDGanttViewTaskItem( this );
      //           cur = cur.addSecs( 7200 );
      //           newSubItem->setStartTime( cur );
      //           cur = cur.addSecs( 7200 );
      //           newSubItem->setEndTime( cur );
      //           newSubItem->setColors( TQt::red, TQt::red, TQt::red );
      //       }
      //debug only end
      setFreeBusy( 0 );
      setShowNoInformation( true );
  }
 
  // We are no longer downloading
  mIsDownloading = false;
}
 
 
KOEditorFreeBusy::KOEditorFreeBusy( int spacing, TQWidget *parent,
                                    const char *name )
  : KOAttendeeEditor( parent, name )
{
  TQVBoxLayout *topLayout = new TQVBoxLayout( this );
  topLayout->setSpacing( spacing );
 
  initOrganizerWidgets( this, topLayout );
 
  // Label for status summary information
  // Uses the tooltip palette to highlight it
  mIsOrganizer = false; // Will be set later. This is just valgrind silencing
  mStatusSummaryLabel = new TQLabel( this );
  mStatusSummaryLabel->setPalette( TQToolTip::palette() );
  mStatusSummaryLabel->setFrameStyle( TQFrame::Plain | TQFrame::Box );
  mStatusSummaryLabel->setLineWidth( 1 );
  mStatusSummaryLabel->hide(); // Will be unhidden later if you are organizer
  topLayout->addWidget( mStatusSummaryLabel );
 
  // The control panel for the gantt widget
  TQBoxLayout *controlLayout = new TQHBoxLayout( topLayout );
 
  TQString whatsThis = i18n("Sets the zoom level on the Gantt chart. "
               "'Hour' shows a range of several hours, "
               "'Day' shows a range of a few days, "
               "'Week' shows a range of a few months, "
               "and 'Month' shows a range of a few years, "
               "while 'Automatic' selects the range most "
               "appropriate for the current event or to-do.");
  TQLabel *label = new TQLabel( i18n( "Scale: " ), this );
  TQWhatsThis::add( label, whatsThis );
  controlLayout->addWidget( label );
 
  scaleCombo = new TQComboBox( this );
  TQWhatsThis::add( scaleCombo, whatsThis );
  scaleCombo->insertItem( i18n( "Hour" ) );
  scaleCombo->insertItem( i18n( "Day" ) );
  scaleCombo->insertItem( i18n( "Week" ) );
  scaleCombo->insertItem( i18n( "Month" ) );
  scaleCombo->insertItem( i18n( "Automatic" ) );
  scaleCombo->setCurrentItem( 0 ); // start with "hour"
  connect( scaleCombo, TQ_SIGNAL( activated( int ) ),
           TQ_SLOT( slotScaleChanged( int ) ) );
  controlLayout->addWidget( scaleCombo );
 
  TQPushButton *button = new TQPushButton( i18n( "Center on Start" ), this );
  TQWhatsThis::add( button,
           i18n("Centers the Gantt chart on the start time "
                "and day of this event.") );
  connect( button, TQ_SIGNAL( clicked() ), TQ_SLOT( slotCenterOnStart() ) );
  controlLayout->addWidget( button );
 
  controlLayout->addStretch( 1 );
 
  button = new TQPushButton( i18n( "Pick Date" ), this );
  TQWhatsThis::add( button,
           i18n("Moves the event to a date and time when all the "
            "attendees are free.") );
  connect( button, TQ_SIGNAL( clicked() ), TQ_SLOT( slotPickDate() ) );
  controlLayout->addWidget( button );
 
  controlLayout->addStretch( 1 );
 
  button = new TQPushButton( i18n("Reload"), this );
  TQWhatsThis::add( button,
           i18n("Reloads Free/Busy data for all attendees from "
            "the corresponding servers.") );
  controlLayout->addWidget( button );
  connect( button, TQ_SIGNAL( clicked() ), TQ_SLOT( manualReload() ) );
 
  mGanttView = new KDGanttView( this, "mGanttView" );
  TQWhatsThis::add( mGanttView,
           i18n("Shows the free/busy status of all attendees. "
            "Double-clicking on an attendees entry in the "
            "list will allow you to enter the location of their "
            "Free/Busy Information.") );
  topLayout->addWidget( mGanttView );
  // Remove the predefined "Task Name" column
  mGanttView->removeColumn( 0 );
  mGanttView->addColumn( i18n("Attendee") );
  if ( KOPrefs::instance()->mCompactDialogs ) {
    mGanttView->setFixedHeight( 78 );
  }
  mGanttView->setHeaderVisible( true );
  mGanttView->setScale( KDGanttView::Hour );
  mGanttView->setShowHeaderPopupMenu( false, false, false, false, false, false );
  // Initially, show 15 days back and forth
  // set start to even hours, i.e. to 12:AM 0 Min 0 Sec
  TQDateTime horizonStart = TQDateTime( TQDateTime::currentDateTime()
                           .addDays( -15 ).date() );
  TQDateTime horizonEnd = TQDateTime::currentDateTime().addDays( 15 );
  mGanttView->setHorizonStart( horizonStart );
  mGanttView->setHorizonEnd( horizonEnd );
  mGanttView->setCalendarMode( true );
  //mGanttView->setDisplaySubitemsAsGroup( true );
  mGanttView->setShowLegendButton( false );
  // Initially, center to current date
  mGanttView->centerTimelineAfterShow( TQDateTime::currentDateTime() );
  if ( TDEGlobal::locale()->use12Clock() )
    mGanttView->setHourFormat( KDGanttView::Hour_12 );
  else
    mGanttView->setHourFormat( KDGanttView::Hour_24_FourDigit );
 
  // mEventRectangle is the colored rectangle representing the event being modified
  mEventRectangle = new KDIntervalColorRectangle( mGanttView );
  mEventRectangle->setColor( TQt::magenta );
  mGanttView->addIntervalBackgroundColor( mEventRectangle );
 
  connect( mGanttView, TQ_SIGNAL ( timeIntervalSelected( const TQDateTime &,
                                                      const TQDateTime & ) ),
           mGanttView, TQ_SLOT( zoomToSelection( const TQDateTime &,
                                              const  TQDateTime & ) ) );
  connect( mGanttView, TQ_SIGNAL( lvItemDoubleClicked( KDGanttViewItem * ) ),
           TQ_SLOT( editFreeBusyUrl( KDGanttViewItem * ) ) );
  connect( mGanttView, TQ_SIGNAL( intervalColorRectangleMoved( const TQDateTime&, const TQDateTime& ) ),
           this, TQ_SLOT( slotIntervalColorRectangleMoved( const TQDateTime&, const TQDateTime& ) ) );
 
  connect( mGanttView, TQ_SIGNAL(lvSelectionChanged(KDGanttViewItem*)),
          this, TQ_SLOT(updateAttendeeInput()) );
  connect( mGanttView, TQ_SIGNAL(lvItemLeftClicked(KDGanttViewItem*)),
           this, TQ_SLOT(showAttendeeStatusMenu()) );
  connect( mGanttView, TQ_SIGNAL(lvItemRightClicked(KDGanttViewItem*)),
           this, TQ_SLOT(showAttendeeStatusMenu()) );
  connect( mGanttView, TQ_SIGNAL(lvMouseButtonClicked(int, KDGanttViewItem*, const TQPoint&, int)),
           this, TQ_SLOT(listViewClicked(int, KDGanttViewItem*)) );
 
  FreeBusyManager *m = KOGroupware::instance()->freeBusyManager();
  connect( m, TQ_SIGNAL( freeBusyRetrieved( KCal::FreeBusy *, const TQString & ) ),
           TQ_SLOT( slotInsertFreeBusy( KCal::FreeBusy *, const TQString & ) ) );
 
  connect( &mReloadTimer, TQ_SIGNAL( timeout() ), TQ_SLOT( autoReload() ) );
 
  initEditWidgets( this, topLayout );
  connect( mRemoveButton, TQ_SIGNAL(clicked()),
           TQ_SLOT(removeAttendee()) );
 
  slotOrganizerChanged( mOrganizerCombo->currentText() );
  connect( mOrganizerCombo, TQ_SIGNAL( activated(const TQString&) ),
           this, TQ_SLOT( slotOrganizerChanged(const TQString&) ) );
 
  //suppress the buggy consequences of clicks on the time header widget
  mGanttView->timeHeaderWidget()->installEventFilter( this );
}
 
KOEditorFreeBusy::~KOEditorFreeBusy()
{
}
 
void KOEditorFreeBusy::removeAttendee( Attendee *attendee )
{
  FreeBusyItem *anItem =
      static_cast<FreeBusyItem *>( mGanttView->firstChild() );
  while( anItem ) {
    if( anItem->attendee() == attendee ) {
      if ( anItem->updateTimerID() != 0 )
        killTimer( anItem->updateTimerID() );
      delete anItem;
      updateStatusSummary();
      break;
    }
    anItem = static_cast<FreeBusyItem *>( anItem->nextSibling() );
  }
}
 
void KOEditorFreeBusy::insertAttendee( Attendee *attendee, bool readFBList )
{
  FreeBusyItem* item = new FreeBusyItem( attendee, mGanttView );
  if ( readFBList )
    updateFreeBusyData( item );
  else {
    clearSelection();
    mGanttView->setSelected( item, true );
  }
  updateStatusSummary();
  emit updateAttendeeSummary( mGanttView->childCount() );
}
 
void KOEditorFreeBusy::clearAttendees()
{
  mGanttView->clear();
}
 
 
void KOEditorFreeBusy::setUpdateEnabled( bool enabled )
{
  mGanttView->setUpdateEnabled( enabled );
}
 
bool KOEditorFreeBusy::updateEnabled() const
{
  return mGanttView->getUpdateEnabled();
}
 
 
void KOEditorFreeBusy::readEvent( Event *event )
{
  bool block = updateEnabled();
  setUpdateEnabled( false );
  clearAttendees();
 
  setDateTimes( event->dtStart(), event->dtEnd() );
  mIsOrganizer = KOPrefs::instance()->thatIsMe( event->organizer().email() );
  updateStatusSummary();
  clearSelection();
  KOAttendeeEditor::readEvent( event );
 
  setUpdateEnabled( block );
  emit updateAttendeeSummary( mGanttView->childCount() );
}
 
void KOEditorFreeBusy::slotIntervalColorRectangleMoved( const TQDateTime& start, const TQDateTime& end )
{
  kdDebug() << k_funcinfo << "slotIntervalColorRectangleMoved " << start << "," << end << endl;
  mDtStart = start;
  mDtEnd = end;
  emit dateTimesChanged( start, end );
}
 
void KOEditorFreeBusy::setDateTimes( const TQDateTime &start, const TQDateTime &end )
{
  slotUpdateGanttView( start, end );
}
 
void KOEditorFreeBusy::slotScaleChanged( int newScale )
{
  // The +1 is for the Minute scale which we don't offer in the combo box.
  KDGanttView::Scale scale = static_cast<KDGanttView::Scale>( newScale+1 );
  mGanttView->setScale( scale );
  slotCenterOnStart();
}
 
void KOEditorFreeBusy::slotCenterOnStart()
{
  mGanttView->centerTimeline( mDtStart );
}
 
void KOEditorFreeBusy::slotZoomToTime()
{
  mGanttView->zoomToFit();
}
 
void KOEditorFreeBusy::updateFreeBusyData( FreeBusyItem* item )
{
  if ( item->isDownloading() )
    // This item is already in the process of fetching the FB list
    return;
 
  if ( item->updateTimerID() != 0 )
    // An update timer is already running. Reset it
    killTimer( item->updateTimerID() );
 
  // This item does not have a download running, and no timer is set
  // Do the download in five seconds
  item->setUpdateTimerID( startTimer( 5000 ) );
}
 
void KOEditorFreeBusy::timerEvent( TQTimerEvent* event )
{
  killTimer( event->timerId() );
  FreeBusyItem *item = static_cast<FreeBusyItem *>( mGanttView->firstChild() );
  while( item ) {
    if( item->updateTimerID() == event->timerId() ) {
      item->setUpdateTimerID( 0 );
      item->startDownload( mForceDownload );
      return;
    }
    item = static_cast<FreeBusyItem *>( item->nextSibling() );
  }
}
 
// Set the Free Busy list for everyone having this email address
// If fb == 0, this disabled the free busy list for them
void KOEditorFreeBusy::slotInsertFreeBusy( KCal::FreeBusy *fb,
                                           const TQString &email )
{
  kdDebug(5850) << "KOEditorFreeBusy::slotInsertFreeBusy() " << email << endl;
 
  if( fb )
    fb->sortList();
  bool block = mGanttView->getUpdateEnabled();
  mGanttView->setUpdateEnabled( false );
  for( KDGanttViewItem *it = mGanttView->firstChild(); it;
       it = it->nextSibling() ) {
    FreeBusyItem *item = static_cast<FreeBusyItem *>( it );
    if( item->email() == email )
      item->setFreeBusyPeriods( fb );
  }
  mGanttView->setUpdateEnabled( block );
}
 
 
void KOEditorFreeBusy::slotUpdateGanttView( const TQDateTime &dtFrom, const TQDateTime &dtTo )
{
  mDtStart = dtFrom;
  mDtEnd = dtTo;
  bool block = mGanttView->getUpdateEnabled( );
  mGanttView->setUpdateEnabled( false );
  TQDateTime horizonStart = TQDateTime( dtFrom.addDays( -15 ).date() );
  mGanttView->setHorizonStart( horizonStart  );
  mGanttView->setHorizonEnd( dtTo.addDays( 15 ) );
  mEventRectangle->setDateTimes( dtFrom, dtTo );
  mGanttView->setUpdateEnabled( block );
  mGanttView->centerTimelineAfterShow( dtFrom );
}
 
 
void KOEditorFreeBusy::slotPickDate()
{
  TQDateTime start = mDtStart;
  TQDateTime end = mDtEnd;
  bool success = findFreeSlot( start, end );
 
  if( success ) {
    if ( start == mDtStart && end == mDtEnd ) {
      KMessageBox::information( this,
          i18n( "The meeting already has suitable start/end times." ), TQString(),
          "MeetingTimeOKFreeBusy" );
    } else {
      if ( KMessageBox::questionYesNo(
             this,
             i18n( "<qt>The next available time slot for the meeting is:<br>"
                   "Start: %1<br>End: %2<br>"
                   "Would you like to move the meeting to this time slot?</qt>" ).
             arg( start.toString(), end.toString() ),
             TQString(),
             KStdGuiItem::yes(), KStdGuiItem::no(),
             "MeetingMovedFreeBusy" ) == KMessageBox::Yes ) {
        emit dateTimesChanged( start, end );
        slotUpdateGanttView( start, end );
      }
    }
  } else
    KMessageBox::sorry( this, i18n( "No suitable date found." ) );
}
 
 
bool KOEditorFreeBusy::findFreeSlot( TQDateTime &dtFrom, TQDateTime &dtTo )
{
  if( tryDate( dtFrom, dtTo ) )
    // Current time is acceptable
    return true;
 
  TQDateTime tryFrom = dtFrom;
  TQDateTime tryTo = dtTo;
 
  // Make sure that we never suggest a date in the past, even if the
  // user originally scheduled the meeting to be in the past.
  if( tryFrom < TQDateTime::currentDateTime() ) {
    // The slot to look for is at least partially in the past.
    int secs = tryFrom.secsTo( tryTo );
    tryFrom = TQDateTime::currentDateTime();
    tryTo = tryFrom.addSecs( secs );
  }
 
  bool found = false;
  while( !found ) {
    found = tryDate( tryFrom, tryTo );
    // PENDING(kalle) Make the interval configurable
    if( !found && dtFrom.daysTo( tryFrom ) > 365 )
      break; // don't look more than one year in the future
  }
 
  dtFrom = tryFrom;
  dtTo = tryTo;
 
  return found;
}
 
 
bool KOEditorFreeBusy::tryDate( TQDateTime& tryFrom, TQDateTime& tryTo )
{
  FreeBusyItem* currentItem = static_cast<FreeBusyItem*>( mGanttView->firstChild() );
  while( currentItem ) {
    if( !tryDate( currentItem, tryFrom, tryTo ) ) {
      // kdDebug(5850) << "++++date is not OK, new suggestion: " << tryFrom.toString() << " to " << tryTo.toString() << endl;
      return false;
    }
 
    currentItem = static_cast<FreeBusyItem*>( currentItem->nextSibling() );
  }
 
  return true;
}
 
bool KOEditorFreeBusy::tryDate( FreeBusyItem *attendee,
                                TQDateTime &tryFrom, TQDateTime &tryTo )
{
  // If we don't have any free/busy information, assume the
  // participant is free. Otherwise a participant without available
  // information would block the whole allocation.
  KCal::FreeBusy *fb = attendee->freeBusy();
  if( !fb )
    return true;
 
  TQValueList<KCal::Period> busyPeriods = fb->busyPeriods();
  for( TQValueList<KCal::Period>::Iterator it = busyPeriods.begin();
       it != busyPeriods.end(); ++it ) {
    if( (*it).end() <= tryFrom || // busy period ends before try period
    (*it).start() >= tryTo )  // busy period starts after try period
      continue;
    else {
      // the current busy period blocks the try period, try
      // after the end of the current busy period
      int secsDuration = tryFrom.secsTo( tryTo );
      tryFrom = (*it).end();
      tryTo = tryFrom.addSecs( secsDuration );
      // try again with the new try period
      tryDate( attendee, tryFrom, tryTo );
      // we had to change the date at least once
      return false;
    }
  }
 
  return true;
}
 
void KOEditorFreeBusy::updateStatusSummary()
{
  FreeBusyItem *aItem =
    static_cast<FreeBusyItem *>( mGanttView->firstChild() );
  int total = 0;
  int accepted = 0;
  int tentative = 0;
  int declined = 0;
  while( aItem ) {
    ++total;
    switch( aItem->attendee()->status() ) {
    case Attendee::Accepted:
      ++accepted;
      break;
    case Attendee::Tentative:
      ++tentative;
      break;
    case Attendee::Declined:
      ++declined;
      break;
    case Attendee::NeedsAction:
    case Attendee::Delegated:
    case Attendee::Completed:
    case Attendee::InProcess:
    case Attendee::None:
      /* just to shut up the compiler */
      break;
    }
    aItem = static_cast<FreeBusyItem *>( aItem->nextSibling() );
  }
  if( total > 1 && mIsOrganizer ) {
    mStatusSummaryLabel->show();
    mStatusSummaryLabel->setText(
        i18n( "Of the %1 participants, %2 have accepted, %3"
              " have tentatively accepted, and %4 have declined.")
        .arg( total ).arg( accepted ).arg( tentative ).arg( declined ) );
  } else {
    mStatusSummaryLabel->hide();
  }
  mStatusSummaryLabel->adjustSize();
}
 
void KOEditorFreeBusy::triggerReload()
{
  mReloadTimer.start( 1000, true );
}
 
void KOEditorFreeBusy::cancelReload()
{
  mReloadTimer.stop();
}
 
void KOEditorFreeBusy::manualReload()
{
  mForceDownload = true;
  reload();
}
 
void KOEditorFreeBusy::autoReload()
{
  mForceDownload = false;
  reload();
}
 
void KOEditorFreeBusy::reload()
{
  kdDebug(5850) << "KOEditorFreeBusy::reload()" << endl;
 
  FreeBusyItem *item = static_cast<FreeBusyItem *>( mGanttView->firstChild() );
  while( item ) {
    if (  mForceDownload )
      item->startDownload( mForceDownload );
    else
      updateFreeBusyData( item );
 
    item = static_cast<FreeBusyItem *>( item->nextSibling() );
  }
}
 
void KOEditorFreeBusy::editFreeBusyUrl( KDGanttViewItem *i )
{
  FreeBusyItem *item = static_cast<FreeBusyItem *>( i );
  if ( !item ) return;
 
  Attendee *attendee = item->attendee();
 
  FreeBusyUrlDialog dialog( attendee, this );
  dialog.exec();
}
 
void KOEditorFreeBusy::writeEvent(KCal::Event * event)
{
  event->clearAttendees();
  TQValueVector<FreeBusyItem*> toBeDeleted;
  for ( FreeBusyItem *item = static_cast<FreeBusyItem *>( mGanttView->firstChild() ); item;
        item = static_cast<FreeBusyItem*>( item->nextSibling() ) )
  {
    Attendee *attendee = item->attendee();
    Q_ASSERT( attendee );
    /* Check if the attendee is a distribution list and expand it */
    if ( attendee->email().isEmpty() ) {
      KPIM::DistributionList list =
        KPIM::DistributionList::findByName( TDEABC::StdAddressBook::self(), attendee->name() );
      if ( !list.isEmpty() ) {
        toBeDeleted.push_back( item ); // remove it once we are done expanding
        KPIM::DistributionList::Entry::List entries = list.entries( TDEABC::StdAddressBook::self() );
        KPIM::DistributionList::Entry::List::Iterator it( entries.begin() );
        while ( it != entries.end() ) {
          KPIM::DistributionList::Entry &e = ( *it );
          ++it;
          // this calls insertAttendee, which appends
          insertAttendeeFromAddressee( e.addressee, attendee );
          // TODO: duplicate check, in case it was already added manually
        }
      }
    } else {
      bool skip = false;
      if ( attendee->email().endsWith( "example.net" ) ) {
        if ( KMessageBox::warningYesNo( this, i18n("%1 does not look like a valid email address. "
                "Are you sure you want to invite this participant?").arg( attendee->email() ),
              i18n("Invalid email address") ) != KMessageBox::Yes ) {
          skip = true;
        }
      }
      if ( !skip ) {
        event->addAttendee( new Attendee( *attendee ) );
      }
    }
  }
 
  KOAttendeeEditor::writeEvent( event );
 
  // cleanup
  TQValueVector<FreeBusyItem*>::iterator it;
  for( it = toBeDeleted.begin(); it != toBeDeleted.end(); ++it ) {
    delete *it;
  }
}
 
KCal::Attendee * KOEditorFreeBusy::currentAttendee() const
{
  KDGanttViewItem *item = mGanttView->selectedItem();
  FreeBusyItem *aItem = static_cast<FreeBusyItem*>( item );
  if ( !aItem )
    return 0;
  return aItem->attendee();
}
 
void KOEditorFreeBusy::updateCurrentItem()
{
  FreeBusyItem* item = static_cast<FreeBusyItem*>( mGanttView->selectedItem() );
  if ( item ) {
    item->updateItem();
    updateFreeBusyData( item );
    updateStatusSummary();
  }
}
 
void KOEditorFreeBusy::removeAttendee()
{
  FreeBusyItem *item = static_cast<FreeBusyItem*>( mGanttView->selectedItem() );
  if ( !item )
    return;
 
  FreeBusyItem *nextSelectedItem = static_cast<FreeBusyItem*>( item->nextSibling() );
  if( mGanttView->childCount() == 1 )
      nextSelectedItem = 0;
  if( mGanttView->childCount() > 1 && item == mGanttView->lastItem() )
      nextSelectedItem = static_cast<FreeBusyItem*>(  mGanttView->firstChild() );
 
  Attendee *delA = new Attendee( item->attendee()->name(), item->attendee()->email(),
                                 item->attendee()->RSVP(), item->attendee()->status(),
                                 item->attendee()->role(), item->attendee()->uid() );
  mdelAttendees.append( delA );
  delete item;
 
  updateStatusSummary();
  if( nextSelectedItem )
      mGanttView->setSelected( nextSelectedItem, true );
  updateAttendeeInput();
  emit updateAttendeeSummary( mGanttView->childCount() );
}
 
void KOEditorFreeBusy::clearSelection() const
{
  KDGanttViewItem *item = mGanttView->selectedItem();
  if (item) {
    mGanttView->setSelected( item, false );
  }
  mGanttView->repaint();
  if (item) {
    item->repaint();
  }
}
 
void KOEditorFreeBusy::setSelected( int index )
{
  int count = 0;
  for( KDGanttViewItem *it = mGanttView->firstChild(); it; it = it->nextSibling() ) {
    FreeBusyItem *item = static_cast<FreeBusyItem*>( it );
    if ( count == index ) {
      mGanttView->setSelected( item, true );
      return;
    }
    count++;
  }
}
 
int KOEditorFreeBusy::selectedIndex()
{
  int index = 0;
  for ( KDGanttViewItem *it = mGanttView->firstChild(); it; it = it->nextSibling() ) {
    FreeBusyItem *item = static_cast<FreeBusyItem*>( it );
    if ( item->isSelected() ) {
      break;
    }
    index++;
  }
  return index;
}
 
void KOEditorFreeBusy::changeStatusForMe(KCal::Attendee::PartStat status)
{
  const TQStringList myEmails = KOPrefs::instance()->allEmails();
  for ( FreeBusyItem *item = static_cast<FreeBusyItem *>( mGanttView->firstChild() ); item;
        item = static_cast<FreeBusyItem*>( item->nextSibling() ) )
  {
    for ( TQStringList::ConstIterator it2( myEmails.begin() ), end( myEmails.end() ); it2 != end; ++it2 ) {
      if ( item->attendee()->email() == *it2 ) {
        item->attendee()->setStatus( status );
        item->updateItem();
      }
    }
  }
}
 
void KOEditorFreeBusy::showAttendeeStatusMenu()
{
  if ( mGanttView->mapFromGlobal( TQCursor::pos() ).x() > 22 )
    return;
  TQPopupMenu popup;
  popup.insertItem( SmallIcon( "help" ), Attendee::statusName( Attendee::NeedsAction ), Attendee::NeedsAction );
  popup.insertItem( KOGlobals::self()->smallIcon( "ok" ), Attendee::statusName( Attendee::Accepted ), Attendee::Accepted );
  popup.insertItem( KOGlobals::self()->smallIcon( "no" ), Attendee::statusName( Attendee::Declined ), Attendee::Declined );
  popup.insertItem( KOGlobals::self()->smallIcon( "apply" ), Attendee::statusName( Attendee::Tentative ), Attendee::Tentative );
  popup.insertItem( KOGlobals::self()->smallIcon( "mail-forward" ), Attendee::statusName( Attendee::Delegated ), Attendee::Delegated );
  popup.insertItem( Attendee::statusName( Attendee::Completed ), Attendee::Completed );
  popup.insertItem( KOGlobals::self()->smallIcon( "help" ), Attendee::statusName( Attendee::InProcess ), Attendee::InProcess );
  popup.setItemChecked( currentAttendee()->status(), true );
  int status = popup.exec( TQCursor::pos() );
  if ( status >= 0 ) {
    currentAttendee()->setStatus( (Attendee::PartStat)status );
    updateCurrentItem();
    updateAttendeeInput();
  }
}
 
void KOEditorFreeBusy::listViewClicked(int button, KDGanttViewItem * item)
{
  if ( button == TQt::LeftButton && item == 0 )
    addNewAttendee();
}
 
void KOEditorFreeBusy::slotOrganizerChanged(const TQString & newOrganizer)
{
  if (newOrganizer==mCurrentOrganizer) return;
 
  TQString name;
  TQString email;
  bool success = KPIM::getNameAndMail( newOrganizer, name, email );
 
  if (!success) return;
//
 
  Attendee *currentOrganizerAttendee = 0;
  Attendee *newOrganizerAttendee = 0;
 
  FreeBusyItem *anItem =
    static_cast<FreeBusyItem *>( mGanttView->firstChild() );
  while( anItem ) {
    Attendee *attendee = anItem->attendee();
    if( attendee->fullName() == mCurrentOrganizer )
      currentOrganizerAttendee = attendee;
 
    if( attendee->fullName() == newOrganizer )
      newOrganizerAttendee = attendee;
 
    anItem = static_cast<FreeBusyItem *>( anItem->nextSibling() );
  }
 
  int answer = KMessageBox::No;
 
  if (currentOrganizerAttendee) {
    answer = KMessageBox::questionYesNo( this, i18n("You are changing the organiser of "
                                                    "this event, who is also attending, "
                                                    "do you want to change that attendee "
                                                    "as well?") );
  } else {
    answer = KMessageBox::Yes;
  }
 
  if (answer==KMessageBox::Yes) {
    if (currentOrganizerAttendee) {
      removeAttendee( currentOrganizerAttendee );
    }
 
    if (!newOrganizerAttendee) {
      Attendee *a = new Attendee( name, email, true );
      insertAttendee( a, false );
      mnewAttendees.append( a );
      updateAttendee();
    }
  }
 
  mCurrentOrganizer = newOrganizer;
}
 
bool KOEditorFreeBusy::eventFilter( TQObject *watched, TQEvent *event )
{
  if ( watched == mGanttView->timeHeaderWidget() &&
       event->type() >= TQEvent::MouseButtonPress && event->type() <= TQEvent::MouseMove ) {
    return true;
  } else {
    return KOAttendeeEditor::eventFilter( watched, event );
  }
}
 
TQListViewItem* KOEditorFreeBusy::hasExampleAttendee() const
{
  for ( FreeBusyItem *item = static_cast<FreeBusyItem *>( mGanttView->firstChild() ); item;
        item = static_cast<FreeBusyItem*>( item->nextSibling() ) ) {
    Attendee *attendee = item->attendee();
    Q_ASSERT( attendee );
    if ( isExampleAttendee( attendee ) )
        return item;
  }
  return 0;
}
 
#include "koeditorfreebusy.moc"