todo dnd

8 files changed, 332 insertions, 58 deletions

diff --git a/korganizer/calendarview.cpp b/korganizer/calendarview.cpp
index 0c39590..74aefb7 100644
--- a/korganizer/calendarview.cpp
+++ b/korganizer/calendarview.cpp
@@ -1528,13 +1528,13 @@ bool  CalendarView::addAnniversary(  QDate date, QString name, KCal::Attendee* a
         ev->setSummary( name + " (" + QString::number(date.year()) +")"); 
     }
     else {
         kind = i18n( "Anniversary" );
         ev->setSummary( name + " (" + QString::number(date.year()) +") " + kind ); 
     }
-    ev->setOrganizer(a->email());
+    //ev->setOrganizer(a->email());
     ev->setCategories( kind );
     ev->setDtStart( QDateTime(date) );
     ev->setDtEnd(  QDateTime(date) );
     ev->setFloats( true );
     Recurrence * rec = ev->recurrence();
     rec->setYearly(Recurrence::rYearlyMonth,1,-1);
@@ -2211,13 +2211,13 @@ void CalendarView::edit_cut()
 
     if (!anEvent) {
         KNotifyClient::beep();
         return;
     }
     DndFactory factory( mCalendar );
-    factory.cutEvent(anEvent);
+    factory.cutIncidence(anEvent);
     changeEventDisplay(anEvent, KOGlobals::EVENTDELETED);
 }
 
 void CalendarView::edit_copy()
 {
     Event *anEvent=0;
@@ -2232,21 +2232,21 @@ void CalendarView::edit_copy()
 
     if (!anEvent) {
         KNotifyClient::beep();
         return;
     }
     DndFactory factory( mCalendar );
-    factory.copyEvent(anEvent);
+    factory.copyIncidence(anEvent);
 }
 
 void CalendarView::edit_paste()
 {
     QDate date = mNavigator->selectedDates().first();
 
     DndFactory factory( mCalendar );
-    Event *pastedEvent = factory.pasteEvent( date );
+    Event *pastedEvent = (Event *)factory.pasteIncidence( date );
 
     changeEventDisplay( pastedEvent, KOGlobals::EVENTADDED );
 }
 
 void CalendarView::edit_options()
 {
diff --git a/korganizer/korganizer.pro b/korganizer/korganizer.pro
index 4d67dca..3c7a1fb 100644
--- a/korganizer/korganizer.pro
+++ b/korganizer/korganizer.pro
@@ -6,15 +6,15 @@ MOC_DIR = _moc
 DESTDIR= ../bin
 
 include( ../variables.pri )
 
 INCLUDEPATH += ../microkde  ../ interfaces ../microkde/kdecore ../microkde/kdeui ../microkde/kio/kfile ../microkde/kio/kio ../libkdepim
 #../qtcompat
-DEFINES += KORG_NODND KORG_NOPLUGINS KORG_NOARCHIVE KORG_NOMAIL
+DEFINES += KORG_NOPLUGINS KORG_NOARCHIVE KORG_NOMAIL
 DEFINES += KORG_NODCOP KORG_NOKALARMD KORG_NORESOURCEVIEW KORG_NOSPLITTER
-#KORG_NOPRINTER KORG_NOKABC 
+#KORG_NOPRINTER KORG_NOKABC KORG_NODND 
 DEFINES += KORG_NOLVALTERNATION
 DEFINES +=  DESKTOP_VERSION
 unix : {
 LIBS += ../bin/libmicrokdepim.so
 LIBS += ../bin/libmicrokcal.so
 LIBS += ../bin/libmicrokde.so
diff --git a/korganizer/kotodoview.cpp b/korganizer/kotodoview.cpp
index 1fb480d..8c1953d 100644
--- a/korganizer/kotodoview.cpp
+++ b/korganizer/kotodoview.cpp
@@ -136,66 +136,66 @@ void KOTodoListView::contentsDropEvent(QDropEvent *e)
     Todo *destinationEvent = 0;
     if (destination) destinationEvent = destination->todo();
 
     Todo *existingTodo = mCalendar->todo(todo->uid());
 
     if(existingTodo) {
-//      kdDebug() << "Drop existing Todo" << endl;
       Incidence *to = destinationEvent;
       while(to) {
         if (to->uid() == todo->uid()) {
           KMessageBox::sorry(this,
-              i18n("Cannot move To-Do to itself or a child of itself"),
+              i18n("Cannot move To-Do to itself\nor a child of itself"),
               i18n("Drop To-Do"));
           delete todo;
           return;
         }
         to = to->relatedTo();
       }
-      existingTodo->setRelatedTo(destinationEvent);
-      emit todoDropped(todo);
+      internalDrop = true;
+      if ( destinationEvent )
+          reparentTodoSignal( destinationEvent, existingTodo );
+      else 
+          unparentTodoSignal(existingTodo);
       delete todo;
     } else {
-//      kdDebug() << "Drop new Todo" << endl;
-      todo->setRelatedTo(destinationEvent);
       mCalendar->addTodo(todo);
-
-      emit todoDropped(todo);
+      emit todoDropped(todo, KOGlobals::EVENTADDED);
+      if ( destinationEvent )
+          reparentTodoSignal( destinationEvent, todo );
     }
   }
   else {
     QString text;
     if (QTextDrag::decode(e,text)) {
       //QListViewItem *qlvi = itemAt( contentsToViewport(e->pos()) );
       KOTodoViewItem *todoi = static_cast<KOTodoViewItem *>(itemAt( contentsToViewport(e->pos()) ));
-      kdDebug() << "Dropped : " << text << endl;
+      qDebug("Dropped : " + text);
       QStringList emails = QStringList::split(",",text);
       for(QStringList::ConstIterator it = emails.begin();it!=emails.end();++it) {
-        kdDebug() << " Email: " << (*it) << endl;
         int pos = (*it).find("<");
         QString name = (*it).left(pos);
         QString email = (*it).mid(pos);
         if (!email.isEmpty() && todoi) {
           todoi->todo()->addAttendee(new Attendee(name,email));
         }
       }
     }
     else {
-      kdDebug() << "KOTodoListView::contentsDropEvent(): Todo from drop not decodable" << endl;
+        qDebug("KOTodoListView::contentsDropEvent(): Todo from drop not decodable ");
       e->ignore();
     }
   }
 #endif
 }
 
 void KOTodoListView::contentsMousePressEvent(QMouseEvent* e)
 {
-  QListView::contentsMousePressEvent(e);
 #ifndef KORG_NODND
   QPoint p(contentsToViewport(e->pos()));
   QListViewItem *i = itemAt(p);
+  mMousePressed = false; 
   if (i) {
     // if the user clicked into the root decoration of the item, don't
     // try to start a drag!
     if (p.x() > header()->sectionPos(header()->mapToIndex(0)) +
         treeStepSize() * (i->depth() + (rootIsDecorated() ? 1 : 0)) +
         itemMargin() ||
@@ -204,41 +204,43 @@ void KOTodoListView::contentsMousePressEvent(QMouseEvent* e)
         mPressPos = e->pos();
         mMousePressed = true;
       }
     }
   }
 #endif
+   QListView::contentsMousePressEvent(e);   
 }
 
 void KOTodoListView::contentsMouseMoveEvent(QMouseEvent* e)
 {
 
 #ifndef KORG_NODND
-//  kdDebug() << "KOTodoListView::contentsMouseMoveEvent()" << endl;
   QListView::contentsMouseMoveEvent(e);
   if (mMousePressed && (mPressPos - e->pos()).manhattanLength() >
       QApplication::startDragDistance()) {
     mMousePressed = false;
     QListViewItem *item = itemAt(contentsToViewport(mPressPos));
     if (item) {
-//      kdDebug() << "Start Drag for item " << item->text(0) << endl;
       DndFactory factory( mCalendar );
-      ICalDrag *vd = factory.createDragTodo(
+      ICalDrag *vd = factory.createDrag(
                           ((KOTodoViewItem *)item)->todo(),viewport());
+      internalDrop = false;
+      // we cannot do any senseful here, because the DnD is still broken in Qt
       if (vd->drag()) {
-        kdDebug() << "KOTodoListView::contentsMouseMoveEvent(): Delete drag source" << endl;
+          if ( !internalDrop ) {
+              //emit deleteTodo( ((KOTodoViewItem *)item)->todo() );
+              qDebug("Dnd: External move: Delete drag source "); 
+          } else
+              qDebug("Dnd: Internal move ");
+          
+      } else {
+          if ( !internalDrop ) {
+              qDebug("Dnd: External Copy");
+          } else
+              qDebug("DnD: Internal copy: Copy pending");
       }
-/*
-      QString source = fullPath(item);
-      if ( QFile::exists(source) ) {
-        QUriDrag* ud = new QUriDrag(viewport());
-        ud->setFilenames( source );
-        if ( ud->drag() )
-          QMessageBox::information( this, "Drag source",
-				    QString("Delete ")+source, "Not implemented" );
-*/
     }
   }
 #endif
 }
 void KOTodoListView::keyPressEvent ( QKeyEvent * e )
 {
@@ -486,14 +488,16 @@ KOTodoView::KOTodoView(Calendar *calendar,QWidget* parent,const char* name) :
                                                         const QPoint &,int ) ),
            SLOT( popupMenu( QListViewItem *, const QPoint & ,int) ) );
   connect( mTodoListView, SIGNAL( clicked( QListViewItem * ) ),
            SLOT( itemClicked( QListViewItem * ) ) );
   connect( mTodoListView, SIGNAL( double_Clicked( QListViewItem * ) ),
            SLOT( itemDoubleClicked( QListViewItem * ) ) );
-  connect( mTodoListView, SIGNAL( todoDropped( Todo * ) ),
+  connect( mTodoListView, SIGNAL( todoDropped( Todo *, int ) ),
            SLOT( updateView() ) );
+  connect( mTodoListView, SIGNAL( todoDropped( Todo *, int ) ),
+           SLOT( todoModified(Todo *, int) ) );
   connect( mTodoListView, SIGNAL( expanded( QListViewItem * ) ),
            SLOT( itemStateChanged( QListViewItem * ) ) );
   connect( mTodoListView, SIGNAL( collapsed( QListViewItem * ) ),
            SLOT( itemStateChanged( QListViewItem * ) ) );
 
 #if 0
@@ -501,12 +505,17 @@ KOTodoView::KOTodoView(Calendar *calendar,QWidget* parent,const char* name) :
           SLOT(selectionChanged(QListViewItem *)));
   connect(mTodoListView,SIGNAL(clicked(QListViewItem *)),
           SLOT(selectionChanged(QListViewItem *)));
   connect(mTodoListView,SIGNAL(pressed(QListViewItem *)),
           SLOT(selectionChanged(QListViewItem *)));
 #endif
+
+  connect( mTodoListView, SIGNAL(reparentTodoSignal( Todo *,Todo * ) ), SIGNAL(reparentTodoSignal( Todo *,Todo * ) ));
+  connect( mTodoListView, SIGNAL(unparentTodoSignal(Todo *)  ), SIGNAL(unparentTodoSignal(Todo *)  ));
+  connect( mTodoListView, SIGNAL( deleteTodo(Todo *)  ), SIGNAL(deleteTodoSignal(Todo *)  ));
+
   connect( mTodoListView, SIGNAL(selectionChanged() ),
            SLOT( processSelectionChange() ) );
   connect( mQuickAdd, SIGNAL( returnPressed () ),
            SLOT( addQuickTodo() ) );
  
 }
diff --git a/korganizer/kotodoview.h b/korganizer/kotodoview.h
index f11518d..68e29bb 100644
--- a/korganizer/kotodoview.h
+++ b/korganizer/kotodoview.h
@@ -57,27 +57,30 @@ class KOTodoListView : public KListView
     Q_OBJECT
   public:
     KOTodoListView(Calendar *,QWidget *parent=0,const char *name=0);
     virtual ~KOTodoListView() {}
 
   signals:
-    void todoDropped(Todo *);  
+    void todoDropped(Todo *, int);  
     void double_Clicked(QListViewItem *item);
-
+    void reparentTodoSignal( Todo *,Todo * );
+    void unparentTodoSignal(Todo *);
+    void deleteTodo( Todo * );
   protected:
     void contentsDragEnterEvent(QDragEnterEvent *);
     void contentsDragMoveEvent(QDragMoveEvent *);
     void contentsDragLeaveEvent(QDragLeaveEvent *);
     void contentsDropEvent(QDropEvent *);
 
     void contentsMousePressEvent(QMouseEvent *);
     void contentsMouseMoveEvent(QMouseEvent *);
     void contentsMouseReleaseEvent(QMouseEvent *);
     void contentsMouseDoubleClickEvent(QMouseEvent *);
 
   private:
+    bool internalDrop;
     QString mName;
     Calendar *mCalendar;
     QPoint mPressPos;
     bool mMousePressed;
     QListViewItem *mOldCurrent;
     void keyPressEvent ( QKeyEvent * ) ;
@@ -194,25 +197,26 @@ class KOTodoView : public KOrg::BaseView
     void beamTodoSignal( Incidence * );
     void purgeCompletedSignal();
 
   protected slots:
     void processSelectionChange();
     void addQuickTodo();
+    void setTodoModified( Todo* );
+    void todoModified(Todo *, int );
 
   private:
     /*
      * the TodoEditor approach is rather unscaling in the long
      * run.
      * Korganizer keeps it in memory and we need to update
      * 1. make KOTodoViewItem a QObject again?
      * 2. add a public method for setting one todo modified?
      * 3. add a private method for setting a todo modified + friend here?
      *  -- zecke 2002-07-08
      */
     friend class KOTodoViewItem;
-    void setTodoModified( Todo* );
     QMap<Todo *,KOTodoViewItem *>::ConstIterator insertTodoItem(Todo *todo);
     void restoreItemState( QListViewItem * );
 
     bool checkTodo( Todo * );
     bool isFlatDisplay;
     void  setOpen( QListViewItem*, bool setOpen);
@@ -232,13 +236,12 @@ class KOTodoView : public KOrg::BaseView
     QString mName;
 
     DocPrefs *mDocPrefs;
     QString mCurrentDoc;
     KOQuickTodo *mQuickAdd;
     bool mBlockUpdate;
-    void todoModified(Todo *, int );
     void keyPressEvent ( QKeyEvent * ) ;
     KOTodoViewItem * pendingSubtodo;
     DateNavigator* mNavigator;
 };
 
 #endif
diff --git a/libkcal/dndfactory.cpp b/libkcal/dndfactory.cpp
new file mode 100644
index 0000000..cdcfae4
--- a/dev/null
+++ b/libkcal/dndfactory.cpp
@@ -0,0 +1,186 @@
+/*
+    This file is part of libkcal.
+    Copyright (c) 1998 Preston Brwon
+    Copyright (c) 2001,2002 Cornelius Schumacher <schumacher@kde.org>
+    Copyright (C) 2003-2004 Reinhold Kainhofer <reinhold@kainhofer.com>
+
+    This library is free software; you can redistribute it and/or
+    modify it under the terms of the GNU Library General Public
+    License as published by the Free Software Foundation; either
+    version 2 of the License, or (at your option) any later version.
+
+    This library 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
+    Library General Public License for more details.
+
+    You should have received a copy of the GNU Library General Public License
+    along with this library; see the file COPYING.LIB.  If not, write to
+    the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+    Boston, MA 02111-1307, USA.
+*/
+
+#include <qapplication.h>
+#include <qclipboard.h>
+
+#include <kiconloader.h>
+#include <kdebug.h>
+#include <kmessagebox.h>
+#include <klocale.h>
+
+#include "vcaldrag.h"
+#include "icaldrag.h"
+#include "calendar.h"
+#include "vcalformat.h"
+#include "icalformat.h"
+#include "calendarlocal.h"
+
+#include "dndfactory.h"
+
+using namespace KCal;
+
+DndFactory::DndFactory( Calendar *cal ) :
+  mCalendar( cal )
+{
+}
+
+ICalDrag *DndFactory::createDrag( Incidence *incidence, QWidget *owner )
+{
+  CalendarLocal cal( mCalendar->timeZoneId() );
+  Incidence *i = incidence->clone();
+  cal.addIncidence( i );
+
+  ICalDrag *icd = new ICalDrag( &cal, owner );
+  if ( i->type() == "Event" )
+    icd->setPixmap( BarIcon( "appointment" ) );
+  else if ( i->type() == "Todo" )
+    icd->setPixmap( BarIcon( "todo" ) );
+
+  return icd;
+}
+
+Event *DndFactory::createDrop(QDropEvent *de)
+{
+  kdDebug(5800) << "DndFactory::createDrop()" << endl;
+
+  CalendarLocal cal( mCalendar->timeZoneId() );
+
+  if ( ICalDrag::decode( de, &cal ) || VCalDrag::decode( de, &cal ) ) {
+    de->accept();
+
+    QPtrList<Event> events = cal.events();
+    if ( !events.isEmpty() ) {
+      Event *event = new Event( *events.first() );
+      return event;
+    }
+  }
+
+  return 0;
+}
+
+Todo *DndFactory::createDropTodo(QDropEvent *de)
+{
+  kdDebug(5800) << "VCalFormat::createDropTodo()" << endl;
+
+  CalendarLocal cal( mCalendar->timeZoneId() );
+
+  if ( ICalDrag::decode( de, &cal ) || VCalDrag::decode( de, &cal ) ) {
+    de->accept();
+
+    QPtrList<Todo> todos = cal.todos();
+    if ( !todos.isEmpty() ) {
+      Todo *todo = new Todo( *todos.first() );
+      return todo;
+    }
+  }
+
+  return 0;
+}
+
+
+void DndFactory::cutIncidence( Incidence *selectedInc )
+{
+  if ( copyIncidence( selectedInc ) ) {
+    mCalendar->deleteIncidence( selectedInc );
+  }
+}
+
+bool DndFactory::copyIncidence( Incidence *selectedInc )
+{
+  if ( !selectedInc ) 
+    return false;
+  QClipboard *cb = QApplication::clipboard();
+
+  CalendarLocal cal( mCalendar->timeZoneId() );
+  Incidence *inc = selectedInc->clone();
+  cal.addIncidence( inc );
+  cb->setData( new ICalDrag( &cal ) );
+
+  return true;
+}
+
+Incidence *DndFactory::pasteIncidence(const QDate &newDate, const QTime *newTime)
+{
+//  kdDebug(5800) << "DnDFactory::pasteEvent()" << endl;
+
+  CalendarLocal cal( mCalendar->timeZoneId() );
+
+  QClipboard *cb = QApplication::clipboard();
+
+  if ( !ICalDrag::decode( cb->data(), &cal ) &&
+       !VCalDrag::decode( cb->data(), &cal ) ) {
+    kdDebug(5800) << "Can't parse clipboard" << endl;
+    return 0;
+  }
+
+  QPtrList<Incidence> incList = cal.incidences();
+  Incidence *inc = incList.first();
+
+  if ( !incList.isEmpty() && inc ) {
+    inc = inc->clone();
+
+    inc->recreate();
+
+    if ( inc->type() == "Event" ) {
+      
+      Event *anEvent = static_cast<Event*>( inc );
+      // Calculate length of event
+      int daysOffset = anEvent->dtStart().date().daysTo(
+        anEvent->dtEnd().date() );
+      // new end date if event starts at the same time on the new day
+      QDateTime endDate( newDate.addDays(daysOffset), anEvent->dtEnd().time() );
+
+      if ( newTime ) {
+        // additional offset for new time of day
+        int addSecsOffset( anEvent->dtStart().time().secsTo( *newTime ));
+        endDate=endDate.addSecs( addSecsOffset );
+        anEvent->setDtStart( QDateTime( newDate, *newTime ) );
+      } else {
+        anEvent->setDtStart( QDateTime( newDate, anEvent->dtStart().time() ) );
+      }
+      anEvent->setDtEnd( endDate );
+    
+    } else if ( inc->type() == "Todo" ) {
+      Todo *anTodo = static_cast<Todo*>( inc );
+      if ( newTime ) {
+        anTodo->setDtDue( QDateTime( newDate, *newTime ) );
+      } else {
+        anTodo->setDtDue( QDateTime( newDate, anTodo->dtDue().time() ) );
+      }
+    } else if ( inc->type() == "Journal" ) {
+      Journal *anJournal = static_cast<Journal*>( inc );
+      if ( newTime ) {
+        anJournal->setDtStart( QDateTime( newDate, *newTime ) );
+      } else {
+        anJournal->setDtStart( QDateTime( newDate ) );
+      }
+    } else {
+      kdDebug(5850) << "Trying to paste unknown incidence of type " << inc->type() << endl;
+    }
+    
+    return inc;
+   
+  }
+
+  return 0;
+}
diff --git a/libkcal/dndfactory.h b/libkcal/dndfactory.h
index 6b73f34..7e2ca04 100644
--- a/libkcal/dndfactory.h
+++ b/libkcal/dndfactory.h
@@ -1,10 +1,12 @@
 /*
     This file is part of libkcal.
+
     Copyright (c) 1998 Preston Brown
-    Copyright (c) 2001,2002 Cornelius Schumacher <schumacher@kde.org>
+    Copyright (c) 2001,2002,2003 Cornelius Schumacher <schumacher@kde.org>
+    Copyright (C) 2003-2004 Reinhold Kainhofer <reinhold@kainhofer.com>
 
     This library is free software; you can redistribute it and/or
     modify it under the terms of the GNU Library General Public
     License as published by the Free Software Foundation; either
     version 2 of the License, or (at your option) any later version.
 
@@ -16,47 +18,57 @@
     You should have received a copy of the GNU Library General Public License
     along with this library; see the file COPYING.LIB.  If not, write to
     the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
     Boston, MA 02111-1307, USA.
 */
 
-// $Id$
-
 #ifndef KCAL_DNDFACTORY_H
 #define KCAL_DNDFACTORY_H
 
-#include "vcalformat.h"
-
-class QDropEvent;
+//#include "libkcal_export.h"
 
 namespace KCal {
 
+class ICalDrag;
+class Event;
+class Todo;
+class Calendar;
+#define LIBKCAL_EXPORT
+
 /**
   This class implements functions to create Drag and Drop objects used for
   Drag-and-Drop and Copy-and-Paste.
 
-  @short vCalendar Drag-and-Drop object factory.
+  @short vCalendar/iCalendar Drag-and-Drop object factory.
 */
-class DndFactory {
+class LIBKCAL_EXPORT DndFactory
+{
   public:
-    DndFactory( Calendar * ) {}
+    DndFactory( Calendar * );
+
+    /**
+      Create a drag object.
+    */
+    ICalDrag *createDrag( Incidence *incidence, QWidget *owner );
 
-    /** create an object to be used with the Xdnd Drag And Drop protocol. */
-    ICalDrag *createDrag(Event *, QWidget *) { return 0; }
-    /** create an object to be used with the Xdnd Drag And Drop protocol. */
-    ICalDrag *createDragTodo(Todo *, QWidget *) { return 0; }
     /** Create Todo object from drop event */
-    Todo *createDropTodo(QDropEvent *) { return 0; }
+    Todo *createDropTodo(QDropEvent *de);
     /** Create Event object from drop event */
-    Event *createDrop(QDropEvent *) { return 0; }
-  
-    /** cut event to clipboard */
-    void cutEvent(Event *) {}
-    /** cut, copy, and paste operations follow. */
-    bool copyEvent(Event *) { return false; }
-    /** pastes the event and returns a pointer to the new event pasted. */
-    Event *pasteEvent(const QDate &, const QTime *newTime = 0) { return 0; }
+    Event *createDrop(QDropEvent *de);
+
+    /** cut incidence to clipboard */
+    void cutIncidence( Incidence * );
+    /** copy the incidence to clipboard */
+    bool copyIncidence( Incidence * );
+    /** pastes the event or todo and returns a pointer to the new incidence pasted. */
+    Incidence *pasteIncidence( const QDate &, const QTime *newTime = 0 );
+
+  private:
+    Calendar *mCalendar;
+
+    class Private;
+    Private *d;
 };
 
 }
 
 #endif
diff --git a/libkcal/dndfactory_dummy.h b/libkcal/dndfactory_dummy.h
new file mode 100644
index 0000000..6b73f34
--- a/dev/null
+++ b/libkcal/dndfactory_dummy.h
@@ -0,0 +1,62 @@
+/*
+    This file is part of libkcal.
+    Copyright (c) 1998 Preston Brown
+    Copyright (c) 2001,2002 Cornelius Schumacher <schumacher@kde.org>
+
+    This library is free software; you can redistribute it and/or
+    modify it under the terms of the GNU Library General Public
+    License as published by the Free Software Foundation; either
+    version 2 of the License, or (at your option) any later version.
+
+    This library 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
+    Library General Public License for more details.
+
+    You should have received a copy of the GNU Library General Public License
+    along with this library; see the file COPYING.LIB.  If not, write to
+    the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+    Boston, MA 02111-1307, USA.
+*/
+
+// $Id$
+
+#ifndef KCAL_DNDFACTORY_H
+#define KCAL_DNDFACTORY_H
+
+#include "vcalformat.h"
+
+class QDropEvent;
+
+namespace KCal {
+
+/**
+  This class implements functions to create Drag and Drop objects used for
+  Drag-and-Drop and Copy-and-Paste.
+
+  @short vCalendar Drag-and-Drop object factory.
+*/
+class DndFactory {
+  public:
+    DndFactory( Calendar * ) {}
+
+    /** create an object to be used with the Xdnd Drag And Drop protocol. */
+    ICalDrag *createDrag(Event *, QWidget *) { return 0; }
+    /** create an object to be used with the Xdnd Drag And Drop protocol. */
+    ICalDrag *createDragTodo(Todo *, QWidget *) { return 0; }
+    /** Create Todo object from drop event */
+    Todo *createDropTodo(QDropEvent *) { return 0; }
+    /** Create Event object from drop event */
+    Event *createDrop(QDropEvent *) { return 0; }
+  
+    /** cut event to clipboard */
+    void cutEvent(Event *) {}
+    /** cut, copy, and paste operations follow. */
+    bool copyEvent(Event *) { return false; }
+    /** pastes the event and returns a pointer to the new event pasted. */
+    Event *pasteEvent(const QDate &, const QTime *newTime = 0) { return 0; }
+};
+
+}
+
+#endif
diff --git a/libkcal/libkcal.pro b/libkcal/libkcal.pro
index 171c726..33c63c3 100644
--- a/libkcal/libkcal.pro
+++ b/libkcal/libkcal.pro
@@ -56,12 +56,13 @@ kincidenceformatter.h \
  period.h \
  person.h \
  qtopiaformat.h \
  recurrence.h \
  scheduler.h \
  todo.h \
+dndfactory.h \
  vcaldrag.h \
  vcalformat.h \
  versit/port.h \
  versit/vcc.h \
  versit/vobject.h \
  phoneformat.h \
@@ -95,12 +96,13 @@ SOURCES = \
  period.cpp \
  person.cpp \
  qtopiaformat.cpp \
  recurrence.cpp \
  scheduler.cpp \
  todo.cpp \
+dndfactory.cpp \
  vcaldrag.cpp \
  vcalformat.cpp \
  versit/vcc.c \
  versit/vobject.c \
  phoneformat.cpp \