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tdepim/korganizer/incidencechanger.cpp

474 lines
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/*
This file is part of KOrganizer.
Copyright (c) 2004 Reinhold Kainhofer <reinhold@kainhofer.com>
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 "koglobals.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,
ResourceCalendar *res, const TQString &subRes )
{
if ( !incidence ) {
return false;
}
kdDebug(5850) << "IncidenceChanger::beginChange for incidence \""
<< incidence->summary() << "\"" << endl;
CalendarResources *calRes = dynamic_cast<CalendarResources*>( mCalendar );
if ( !calRes ) {
return false;
}
return calRes->beginChange( incidence, res, subRes );
}
bool IncidenceChanger::sendGroupwareMessage( Incidence *incidence,
KCal::Scheduler::Method method,
KOGlobals::HowChanged action,
TQWidget *parent )
{
if ( KOPrefs::instance()->thatIsMe( incidence->organizer().email() ) && incidence->attendeeCount()>0
&& !KOPrefs::instance()->mUseGroupwareCommunication ) {
emit schedule( method, incidence );
return true;
} else if( KOPrefs::instance()->mUseGroupwareCommunication ) {
return
KOGroupware::instance()->sendICalMessage( parent, method, incidence, action, false );
}
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 scheduling should be factored out to it's own class
// anyway
KCal::MailScheduler scheduler( mCalendar );
scheduler.performTransaction( incidence, Scheduler::Cancel );
}
}
}
bool IncidenceChanger::endChange( Incidence *incidence,
ResourceCalendar *res, const TQString &subRes )
{
// 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;
CalendarResources *calRes = dynamic_cast<CalendarResources*>( mCalendar );
if ( !calRes ) {
return false;
}
return calRes->endChange( incidence, res, subRes );
}
bool IncidenceChanger::deleteIncidence( Incidence *incidence, TQWidget *parent )
{
if ( !incidence ) return true;
kdDebug(5850)<<"IncidenceChanger::deleteIncidence for incidence \""<<incidence->summary()<<"\""<<endl;
bool doDelete = sendGroupwareMessage( incidence, KCal::Scheduler::Cancel,
KOGlobals::INCIDENCEDELETED, parent );
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 TQStringList myEmails = KOPrefs::instance()->allEmails();
bool notifyOrganizer = false;
for ( TQStringList::ConstIterator it = myEmails.begin(); it != myEmails.end(); ++it ) {
TQString 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 ( !KOGroupware::instance()->doNotNotify() && notifyOrganizer ) {
KCal::MailScheduler scheduler( mCalendar );
scheduler.performTransaction( tmp, Scheduler::Reply );
}
//reset the doNotNotify flag
KOGroupware::instance()->setDoNotNotify( false );
}
emit incidenceDeleted( incidence );
}
return doDelete;
}
bool IncidenceChanger::cutIncidences( const Incidence::List &incidences,
TQWidget *parent )
{
Incidence::List::ConstIterator it;
bool doDelete = true;
Incidence::List incsToCut;
for ( it = incidences.constBegin(); it != incidences.constEnd(); ++it ) {
if ( *it ) {
doDelete = sendGroupwareMessage( *it, KCal::Scheduler::Cancel,
KOGlobals::INCIDENCEDELETED, parent );
if ( doDelete ) {
emit incidenceToBeDeleted( *it );
incsToCut.append( *it );
}
}
}
DndFactory factory( mCalendar );
if ( factory.cutIncidences( incsToCut ) ) {
for ( it = incsToCut.constBegin(); it != incsToCut.constEnd(); ++it ) {
emit incidenceDeleted( *it );
}
return !incsToCut.isEmpty();
} else {
return false;
}
}
bool IncidenceChanger::cutIncidence( Incidence *incidence, TQWidget *parent )
{
Incidence::List incidences;
incidences.append( incidence );
return cutIncidences( incidences, parent );
}
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,
KOGlobals::WhatChanged action,
TQWidget *parent )
{
return changeIncidence( oldinc, newinc, action, parent, 0 );
}
bool IncidenceChanger::changeIncidence( Incidence *oldinc, Incidence *newinc,
KOGlobals::WhatChanged action,
TQWidget *parent,
int dontAskForGroupware )
{
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 attendeeStatusChanged = 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 scheduling. Each implementation could then just do what
// it wants with the event. If no groupware is used,use the null
// pattern...
bool success = true;
if ( KOPrefs::instance()->mUseGroupwareCommunication ) {
success = KOGroupware::instance()->sendICalMessage(
parent,
KCal::Scheduler::Request,
newinc, KOGlobals::INCIDENCEEDITED, attendeeStatusChanged, dontAskForGroupware );
}
if ( success ) {
// Accept the event changes
emit incidenceChanged( oldinc, newinc, action );
} else {
// revert changes
assignIncidence( newinc, oldinc );
return false;
}
}
return true;
}
bool IncidenceChanger::addIncidence( Incidence *incidence,
ResourceCalendar *res, const TQString &subRes,
TQWidget *parent )
{
return addIncidence( incidence, res, subRes, parent, 0 );
}
bool IncidenceChanger::addIncidence( Incidence *incidence,
ResourceCalendar *res, const TQString &subRes,
TQWidget *parent, int dontAskForGroupware )
{
CalendarResources *stdcal = dynamic_cast<CalendarResources *>( mCalendar );
if( stdcal && !stdcal->hasCalendarResources() ) {
KMessageBox::sorry(
parent,
i18n( "No calendars found, unable to save %1 \"%2\"." ).
arg( i18n( incidence->type() ) ).
arg( incidence->summary() ) );
kdDebug(5850) << "IncidenceChanger: No calendars found" << endl;
return false;
}
// 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
TQWidget *tmpparent = 0;
if ( stdcal ) {
tmpparent = stdcal->dialogParentWidget();
stdcal->setDialogParentWidget( parent );
}
// If a ResourceCalendar isn't provided, then try to compute one
// along with any subResource from the incidence.
ResourceCalendar *pRes = res;
TQString pSubRes = subRes;
TQString pResName;
if ( !pRes ) {
if ( stdcal ) {
pRes = stdcal->resource( incidence );
if ( pRes ) {
pResName = pRes->resourceName();
if ( pRes->canHaveSubresources() ) {
pSubRes = pRes->subresourceIdentifier( incidence );
pResName = pRes->labelForSubresource( pSubRes );
}
}
}
}
bool success = false;
if ( stdcal && pRes && !pRes->readOnly() && pRes->subresourceWritable( pSubRes ) ) {
success = stdcal->addIncidence( incidence, pRes, pSubRes );
} else {
success = mCalendar->addIncidence( incidence );
}
if ( !success ) {
// We can have a failure if the user pressed [cancel] in the resource
// selectdialog, so check the exception.
ErrorFormat *e = stdcal ? stdcal->exception() : 0;
if ( !e ||
( e && ( e->errorCode() != KCal::ErrorFormat::UserCancel &&
e->errorCode() != KCal::ErrorFormat::NoWritableFound ) ) ) {
TQString errMessage;
if ( pResName.isEmpty() ) {
errMessage = i18n( "Unable to save %1 \"%2\"." ).
arg( i18n( incidence->type() ) ).
arg( incidence->summary() );
} else {
errMessage = i18n( "Unable to save %1 \"%2\" to calendar %3." ).
arg( i18n( incidence->type() ) ).
arg( incidence->summary() ).
arg( pResName );
}
KMessageBox::sorry( parent, errMessage );
}
kdDebug(5850) << "IncidenceChanger: Can't add incidence" << endl;
return false;
}
if ( KOPrefs::instance()->mUseGroupwareCommunication ) {
if ( !KOGroupware::instance()->sendICalMessage(
parent,
KCal::Scheduler::Request,
incidence, KOGlobals::INCIDENCEADDED, false, dontAskForGroupware ) ) {
KMessageBox::sorry(
parent,
i18n( "Attempt to send the scheduling message failed. "
"Please check your Group Scheduling settings. "
"Contact your system administrator for more help.") );
}
}
emit incidenceAdded( incidence );
return true;
}
#include "incidencechanger.moc"
#include "incidencechangerbase.moc"