kmail/kmfiltermgr.cpp

// kmfiltermgr.cpp

// my header
#include "kmfiltermgr.h"

// other kmail headers
#include "kmfilterdlg.h"
#include "kmfolderindex.h"

// other KDE headers
#include <kdebug.h>
#include <klocale.h>
#include <kconfig.h>

// other Qt headers
#include <qregexp.h>

// other headers
#include <assert.h>


//-----------------------------------------------------------------------------
KMFilterMgr::KMFilterMgr( bool popFilter )
  : QPtrList<KMFilter>(),
    mEditDialog( 0 ),
    bPopFilter( popFilter ),
    mShowLater( false )
{
  if (bPopFilter)
    kdDebug(5006) << "pPopFilter set" << endl;
  setAutoDelete(TRUE);
}


//-----------------------------------------------------------------------------
KMFilterMgr::~KMFilterMgr()
{
  cleanup();
  writeConfig(FALSE);
}


//-----------------------------------------------------------------------------
void KMFilterMgr::readConfig(void)
{
  KConfig* config = KMKernel::config();
  int numFilters;
  QString grpName;

  clear();

  KConfigGroupSaver saver(config, "General");

  if (bPopFilter) {
    numFilters = config->readNumEntry("popfilters",0);
    mShowLater = config->readNumEntry("popshowDLmsgs",0);
  } else {
    numFilters = config->readNumEntry("filters",0);
  }

  for ( int i=0 ; i < numFilters ; ++i ) {
    grpName.sprintf("%s #%d", (bPopFilter ? "PopFilter" : "Filter") , i);
    KConfigGroupSaver saver(config, grpName);
    KMFilter * filter = new KMFilter(config, bPopFilter);
    filter->purify();
    if ( filter->isEmpty() ) {
#ifndef NDEBUG
      kdDebug(5006) << "KMFilter::readConfig: filter\n" << filter->asString()
		<< "is empty!" << endl;
#endif
      delete filter;
    } else
      append(filter);
  }
}


//-----------------------------------------------------------------------------
void KMFilterMgr::writeConfig(bool withSync)
{
  KConfig* config = KMKernel::config();

  // first, delete all groups:
  QStringList filterGroups =
    config->groupList().grep( QRegExp( bPopFilter ? "PopFilter #\\d+" : "Filter #\\d+" ) );
  for ( QStringList::Iterator it = filterGroups.begin() ;
	it != filterGroups.end() ; ++it )
    config->deleteGroup( *it );

  // Now, write out the new stuff:
  int i = 0;
  QString grpName;
  for ( QPtrListIterator<KMFilter> it(*this) ; it.current() ; ++it )
    if ( !(*it)->isEmpty() ) {
      if ( bPopFilter )
	grpName.sprintf("PopFilter #%d", i);
      else
	grpName.sprintf("Filter #%d", i);
      KConfigGroupSaver saver(config, grpName);
      (*it)->writeConfig(config);
      ++i;
    }

  KConfigGroupSaver saver(config, "General");
  if (bPopFilter) {
    config->writeEntry("popfilters", i);
    config->writeEntry("popshowDLmsgs", mShowLater);
  } else
    config->writeEntry("filters", i);

  if (withSync) config->sync();
}


int KMFilterMgr::processPop( KMMessage * msg ) const {
  for ( QPtrListIterator<KMFilter> it( *this ) ; it.current() ; ++it )
    if ( (*it)->pattern()->matches( msg ) )
      return (*it)->action();
  return NoAction;
}

int KMFilterMgr::process( KMMessage * msg, const KMFilter * filter ) const {
  if ( !msg || !filter )
    return 1;

  // remove msg from parent in case we want to move it:
  KMFolder * parent = msg->parent();
  if ( parent )
    parent->removeMsg( parent->find( msg ) );
  msg->setParent( 0 );

  bool stopIt = false;
  int result;
  switch( filter->execActions( msg, stopIt ) ) {
  case KMFilter::CriticalError:
    return 2;
  case KMFilter::MsgExpropriated:
    result = 0;
    break;
  default:
    result = 1;
    break;
  }

  // readd message if it wasn't moved:
  if ( parent && !msg->parent() && parent->addMsg( msg ) != 0 )
    kernel->emergencyExit( i18n("Unable to process messages (message locking synchronization failure?)" ))   ;

  return result;
}

int KMFilterMgr::process( KMMessage * msg, FilterSet set ) const {
  if ( bPopFilter )
    return processPop( msg );

  if ( set == NoSet ) {
    kdDebug(5006) << "KMFilterMgr: process() called with not filter set selected"
		  << endl;
    return 1;
  }

  bool stopIt = false;
  int status = -1;
  bool msgTaken = false; // keep track of whether we removeMsg'ed already

  KMFolder * parent=0;

  for ( QPtrListIterator<KMFilter> it(*this) ; !stopIt && it.current() ; ++it ) {

    if ( ( (set&Outbound) && (*it)->applyOnOutbound() ) ||
	 ( (set&Inbound)  && (*it)->applyOnInbound() ) ||
	 ( (set&Explicit) && (*it)->applyOnExplicit() ) ) {
	// filter is applicable

      if ( (*it)->pattern()->matches( msg ) ) {
	// filter matches

	// remove msg from parent in case we want to move it; make
	// sure we only do these things once:
	if ( !msgTaken ) {
	  parent = msg->parent();
	  if ( msg->parent() )
	    msg->parent()->removeMsg( msg->parent()->find( msg ) );
	  msg->setParent( 0 );
	  msgTaken = true;
	}

	// execute actions:
	switch ( (*it)->execActions(msg, stopIt) ) {
	case KMFilter::CriticalError:
	  // Critical error - immediate return
	  return 2;
	case KMFilter::MsgExpropriated:
	  // Message saved in a folder
	  status = 0;
	default:
	  break;
	}

      }
    }
  }

  // readd the message if it wasn't moved:
  if ( msgTaken && parent && !msg->parent() ) {
    int rc = parent->addMsg( msg );
    if ( rc )
      kernel->emergencyExit( i18n("Unable to process messages (message locking synchronization failure?)" ))   ;
  }
  if (status < 0) // No filters matched, keep copy of message
    status = 1;

  return status;
}



//-----------------------------------------------------------------------------
void KMFilterMgr::cleanup(void)
{
  QPtrListIterator<KMFolder> it(mOpenFolders);
  for ( it.toFirst() ; it.current() ; ++it )
    (*it)->close();
  mOpenFolders.clear();
}


//-----------------------------------------------------------------------------
int KMFilterMgr::tempOpenFolder(KMFolder* aFolder)
{
  assert( aFolder );

  int rc = aFolder->open();
  if (rc) return rc;

  mOpenFolders.append( aFolder );
  return 0;
}


//-----------------------------------------------------------------------------
void KMFilterMgr::openDialog( QWidget * )
{
  if( !mEditDialog )
  {
    //
    // We can't use the parent as long as the dialog is modeless
    // and there is one shared dialog for all top level windows.
    //
    mEditDialog = new KMFilterDlg( 0, "filterdialog", bPopFilter );
  }
  mEditDialog->show();
}


//-----------------------------------------------------------------------------
void KMFilterMgr::createFilter( const QCString & field, const QString & value )
{
  openDialog( 0 );
  mEditDialog->createFilter( field, value );
}


//-----------------------------------------------------------------------------
bool KMFilterMgr::folderRemoved(KMFolder* aFolder, KMFolder* aNewFolder)
{
  bool rem = FALSE;

  QPtrListIterator<KMFilter> it(*this);
  for ( it.toFirst() ; it.current() ; ++it )
    if ( (*it)->folderRemoved(aFolder, aNewFolder) ) rem=TRUE;

  return rem;
}


//-----------------------------------------------------------------------------
#ifndef NDEBUG
void KMFilterMgr::dump(void)
{
  QPtrListIterator<KMFilter> it(*this);
  for ( it.toFirst() ; it.current() ; ++it )
  {
    kdDebug(5006) << (*it)->asString() << endl;
  }
}
#endif

//-----------------------------------------------------------------------------
void KMFilterMgr::endUpdate(void)
{
  emit filterListUpdated();
}

#include "kmfiltermgr.moc"