Copy the KDE 3.5 branch to branches/trinity for new KDE 3.5 features.

BUG:215923


git-svn-id: svn://anonsvn.kde.org/home/kde/branches/trinity/kdepim@1054174 283d02a7-25f6-0310-bc7c-ecb5cbfe19da

1 files changed, 354 insertions, 0 deletions

diff --git a/korganizer/incidencechanger.cpp b/korganizer/incidencechanger.cpp
new file mode 100644
index 000000000..d440f0842
--- /dev/null
+++ b/korganizer/incidencechanger.cpp
@@ -0,0 +1,354 @@
+/*
+    This file is part of KOrganizer.
+
+    Copyright (c) 2004 Reinhold Kainhofer <[email protected]>
+
+    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 Qt, and distribute the resulting executable,
+    without including the source code for Qt in the source distribution.
+*/
+
+#include "incidencechanger.h"
+#include "koprefs.h"
+#include "kogroupware.h"
+#include "mailscheduler.h"
+
+#include <libkcal/freebusy.h>
+#include <libkcal/dndfactory.h>
+#include <kdebug.h>
+#include <kmessagebox.h>
+#include <klocale.h>
+
+
+
+bool IncidenceChanger::beginChange( Incidence * incidence )
+{
+  if ( !incidence ) return false;
+kdDebug(5850)<<"IncidenceChanger::beginChange for incidence \""<<incidence->summary()<<"\""<<endl;
+  return mCalendar->beginChange( incidence );
+}
+
+bool IncidenceChanger::sendGroupwareMessage( Incidence *incidence, KCal::Scheduler::Method method, bool deleting )
+{
+  if ( KOPrefs::instance()->thatIsMe( incidence->organizer().email() ) && incidence->attendeeCount()>0
+      && !KOPrefs::instance()->mUseGroupwareCommunication ) {
+    emit schedule( method, incidence );
+    return true;
+  } else if( KOPrefs::instance()->mUseGroupwareCommunication ) {
+  // FIXME: Find a widget to use as parent, instead of 0
+    return KOGroupware::instance()->sendICalMessage( 0, method, incidence, deleting );
+  }
+  return true;
+}
+
+void IncidenceChanger::cancelAttendees( Incidence *incidence )
+{
+  if ( KOPrefs::instance()->mUseGroupwareCommunication ) {
+    if ( KMessageBox::questionYesNo( 0, i18n("Some attendees were removed "
+       "from the incidence. Shall cancel messages be sent to these attendees?"),
+       i18n( "Attendees Removed" ), i18n("Send Messages"), i18n("Do Not Send") ) == KMessageBox::Yes ) {
+      // don't use KOGroupware::sendICalMessage here, because that asks just
+      // a very general question "Other people are involved, send message to
+      // them?", which isn't helpful at all in this situation. Afterwards, it
+      // would only call the MailScheduler::performTransaction, so do this
+      // manually.
+      // FIXME: Groupware schedulling should be factored out to it's own class
+      //        anyway
+      KCal::MailScheduler scheduler( mCalendar );
+      scheduler.performTransaction( incidence, Scheduler::Cancel );
+    }
+  }
+}
+
+bool IncidenceChanger::endChange( Incidence *incidence )
+{
+  // FIXME: if that's a groupware incidence, and I'm not the organizer,
+  // send out a mail to the organizer with a counterproposal instead
+  // of actually changing the incidence. Then no locking is needed.
+  // FIXME: if that's a groupware incidence, and the incidence was
+  // never locked, we can't unlock it with endChange().
+  if ( !incidence ) return false;
+kdDebug(5850)<<"IncidenceChanger::endChange for incidence \""<<incidence->summary()<<"\""<<endl;
+  return mCalendar->endChange( incidence );
+}
+
+bool IncidenceChanger::deleteIncidence( Incidence *incidence )
+{
+  if ( !incidence ) return true;
+kdDebug(5850)<<"IncidenceChanger::deleteIncidence for incidence \""<<incidence->summary()<<"\""<<endl;
+  bool doDelete = sendGroupwareMessage( incidence, KCal::Scheduler::Cancel );
+  if( doDelete ) {
+    // @TODO: let Calendar::deleteIncidence do the locking...
+    Incidence* tmp = incidence->clone();
+    emit incidenceToBeDeleted( incidence );
+    doDelete = mCalendar->deleteIncidence( incidence );
+    if ( !KOPrefs::instance()->thatIsMe( tmp->organizer().email() ) ) {
+      const QStringList myEmails = KOPrefs::instance()->allEmails();
+      bool notifyOrganizer = false;
+      for ( QStringList::ConstIterator it = myEmails.begin(); it != myEmails.end(); ++it ) {
+        QString email = *it;
+        Attendee *me = tmp->attendeeByMail(email);
+        if ( me ) {
+          if ( me->status() == KCal::Attendee::Accepted || me->status() == KCal::Attendee::Delegated )
+            notifyOrganizer = true;
+          Attendee *newMe = new Attendee( *me );
+          newMe->setStatus( KCal::Attendee::Declined );
+          tmp->clearAttendees();
+          tmp->addAttendee( newMe );
+          break;
+        }
+      }
+
+      if ( notifyOrganizer ) {
+          KCal::MailScheduler scheduler( mCalendar );
+          scheduler.performTransaction( tmp, Scheduler::Reply );
+      }
+    }
+    emit incidenceDeleted( incidence );
+  }
+  return doDelete;
+}
+
+bool IncidenceChanger::cutIncidence( Incidence *incidence )
+{
+  if ( !incidence ) return true;
+kdDebug(5850)<<"IncidenceChanger::deleteIncidence for incidence \""<<incidence->summary()<<"\""<<endl;
+  bool doDelete = sendGroupwareMessage( incidence, KCal::Scheduler::Cancel );
+  if( doDelete ) {
+    // @TODO: the factory needs to do the locking!
+    DndFactory factory( mCalendar );
+    emit incidenceToBeDeleted( incidence );
+    factory.cutIncidence( incidence );
+    emit incidenceDeleted( incidence );
+  }
+  return doDelete;
+}
+
+class IncidenceChanger::ComparisonVisitor : public IncidenceBase::Visitor
+{
+  public:
+    ComparisonVisitor() {}
+    bool act( IncidenceBase *incidence, IncidenceBase *inc2 )
+    {
+      mIncidence2 = inc2;
+      if ( incidence )
+        return incidence->accept( *this );
+      else
+        return (inc2 == 0);
+    }
+  protected:
+    bool visit( Event *event )
+    {
+      Event *ev2 = dynamic_cast<Event*>(mIncidence2);
+      if ( event && ev2 ) {
+        return *event == *ev2;
+      } else {
+        // either both 0, or return false;
+        return ( ev2 == event );
+      }
+    }
+    bool visit( Todo *todo )
+    {
+      Todo *to2 = dynamic_cast<Todo*>( mIncidence2 );
+      if ( todo && to2 ) {
+        return *todo == *to2;
+      } else {
+        // either both 0, or return false;
+        return ( todo == to2 );
+      }
+    }
+    bool visit( Journal *journal )
+    {
+      Journal *j2 = dynamic_cast<Journal*>( mIncidence2 );
+      if ( journal && j2 ) {
+        return *journal == *j2;
+      } else {
+        // either both 0, or return false;
+        return ( journal == j2 );
+      }
+    }
+    bool visit( FreeBusy *fb )
+    {
+      FreeBusy *fb2 = dynamic_cast<FreeBusy*>( mIncidence2 );
+      if ( fb && fb2 ) {
+        return *fb == *fb2;
+      } else {
+        // either both 0, or return false;
+        return ( fb2 == fb );
+      }
+    }
+
+  protected:
+    IncidenceBase *mIncidence2;
+};
+
+class IncidenceChanger::AssignmentVisitor : public IncidenceBase::Visitor
+{
+  public:
+    AssignmentVisitor() {}
+    bool act( IncidenceBase *incidence, IncidenceBase *inc2 )
+    {
+      mIncidence2 = inc2;
+      if ( incidence )
+        return incidence->accept( *this );
+      else
+        return false;
+    }
+  protected:
+    bool visit( Event *event )
+    {
+      Event *ev2 = dynamic_cast<Event*>( mIncidence2 );
+      if ( event && ev2 ) {
+        *event = *ev2;
+        return true;
+      } else {
+        return false;
+      }
+    }
+    bool visit( Todo *todo )
+    {
+      Todo *to2 = dynamic_cast<Todo*>( mIncidence2 );
+      if ( todo && to2 ) {
+        *todo = *to2;
+        return true;
+      } else {
+        return false;
+      }
+    }
+    bool visit( Journal *journal )
+    {
+      Journal *j2 = dynamic_cast<Journal*>(mIncidence2);
+      if ( journal && j2 ) {
+        *journal = *j2;
+        return true;
+      } else {
+        return false;
+      }
+    }
+    bool visit( FreeBusy *fb )
+    {
+      FreeBusy *fb2 = dynamic_cast<FreeBusy*>( mIncidence2 );
+      if ( fb && fb2 ) {
+        *fb = *fb2;
+        return true;
+      } else {
+        return false;
+      }
+    }
+
+  protected:
+    IncidenceBase *mIncidence2;
+};
+
+bool IncidenceChanger::incidencesEqual( Incidence *inc1, Incidence *inc2 )
+{
+  ComparisonVisitor v;
+  return ( v.act( inc1, inc2 ) );
+}
+
+bool IncidenceChanger::assignIncidence( Incidence *inc1, Incidence *inc2 )
+{
+  AssignmentVisitor v;
+  return v.act( inc1, inc2 );
+}
+
+bool IncidenceChanger::myAttendeeStatusChanged( Incidence *oldInc, Incidence *newInc )
+{
+  Attendee *oldMe = oldInc->attendeeByMails( KOPrefs::instance()->allEmails() );
+  Attendee *newMe = newInc->attendeeByMails( KOPrefs::instance()->allEmails() );
+  if ( oldMe && newMe && ( oldMe->status() != newMe->status() ) )
+    return true;
+
+  return false;
+}
+
+bool IncidenceChanger::changeIncidence( Incidence *oldinc, Incidence *newinc,
+                                        int action )
+{
+kdDebug(5850)<<"IncidenceChanger::changeIncidence for incidence \""<<newinc->summary()<<"\" ( old one was \""<<oldinc->summary()<<"\")"<<endl;
+  if( incidencesEqual( newinc, oldinc ) ) {
+    // Don't do anything
+    kdDebug(5850) << "Incidence not changed\n";
+  } else {
+    kdDebug(5850) << "Incidence changed\n";
+    bool statusChanged = myAttendeeStatusChanged( oldinc, newinc );
+    int revision = newinc->revision();
+    newinc->setRevision( revision + 1 );
+    // FIXME: Use a generic method for this! Ideally, have an interface class
+    //        for group cheduling. Each implementation could then just do what
+    //        it wants with the event. If no groupware is used,use the null
+    //        pattern...
+    bool revert = KOPrefs::instance()->mUseGroupwareCommunication;
+    if ( revert &&
+        KOGroupware::instance()->sendICalMessage( 0,
+                                                  KCal::Scheduler::Request,
+                                                  newinc, false, statusChanged ) ) {
+      // Accept the event changes
+      if ( action<0 ) {
+        emit incidenceChanged( oldinc, newinc );
+      } else {
+        emit incidenceChanged( oldinc, newinc, action );
+      }
+      revert = false;
+    }
+
+    if ( revert ) {
+      assignIncidence( newinc, oldinc );
+      return false;
+    }
+  }
+  return true;
+}
+
+bool IncidenceChanger::addIncidence( Incidence *incidence, QWidget *parent )
+{
+kdDebug(5850)<<"IncidenceChanger::addIncidence for incidence \""<<incidence->summary()<<"\""<<endl;
+  if ( KOPrefs::instance()->mUseGroupwareCommunication ) {
+    if ( !KOGroupware::instance()->sendICalMessage( parent,
+                                                    KCal::Scheduler::Request,
+                                                    incidence ) ) {
+      kdError() << "sendIcalMessage failed." << endl;
+    }
+  }
+  // FIXME: This is a nasty hack, since we need to set a parent for the
+  //        resource selection dialog. However, we don't have any UI methods
+  //        in the calendar, only in the CalendarResources::DestinationPolicy
+  //        So we need to type-cast it and extract it from the CalendarResources
+  CalendarResources *stdcal = dynamic_cast<CalendarResources*>(mCalendar);
+  QWidget *tmpparent = 0;
+  if ( stdcal ) {
+    tmpparent = stdcal->dialogParentWidget();
+    stdcal->setDialogParentWidget( parent );
+  }
+  bool success = mCalendar->addIncidence( incidence );
+  if ( stdcal ) {
+    // Reset the parent widget, otherwise we'll end up with pointers to deleted
+    // widgets sooner or later
+    stdcal->setDialogParentWidget( tmpparent );
+  }
+  if ( !success ) {
+    KMessageBox::sorry( parent, i18n("Unable to save %1 \"%2\".")
+                        .arg( i18n( incidence->type() ) )
+                        .arg( incidence->summary() ) );
+    return false;
+  }
+  emit incidenceAdded( incidence );
+  return true;
+}
+
+#include "incidencechanger.moc"
+#include "incidencechangerbase.moc"