| -rw-r--r-- | libkcal/calendar.h | 2 | ||||
| -rw-r--r-- | libkcal/calendarlocal.cpp | 26 | ||||
| -rw-r--r-- | libkcal/calendarlocal.h | 1 |
3 files changed, 28 insertions, 1 deletions
diff --git a/libkcal/calendar.h b/libkcal/calendar.h index 3f6895d..4b8b3ff 100644 --- a/libkcal/calendar.h +++ b/libkcal/calendar.h @@ -130,251 +130,253 @@ public: void setTimeZoneId( const QString & ); /** Return time zone id. */ QString timeZoneId() const; /** Use local time, not UTC or a time zone. */ void setLocalTime(); /** Return whether local time is being used. */ bool isLocalTime() const; /** Add an incidence to calendar. @return true on success, false on error. */ virtual bool addIncidence( Incidence * ); // Adds an incidence and all relatedto incidences to the cal void addIncidenceBranch( Incidence * ); /** Return filtered list of all incidences of this calendar. */ virtual QPtrList<Incidence> incidences(); /** Return unfiltered list of all incidences of this calendar. */ virtual QPtrList<Incidence> rawIncidences(); /** Adds a Event to this calendar object. @param anEvent a pointer to the event to add @return true on success, false on error. */ virtual bool addEventNoDup( Event *event ) = 0; virtual bool addAnniversaryNoDup( Event *event ) = 0; virtual bool addEvent( Event *anEvent ) = 0; /** Delete event from calendar. */ virtual void deleteEvent( Event * ) = 0; /** Retrieves an event on the basis of the unique string ID. */ virtual Event *event( const QString &UniqueStr ) = 0; virtual Event *event( QString, QString ) = 0; /** Builds and then returns a list of all events that match for the date specified. useful for dayView, etc. etc. The calendar filter is applied. */ QPtrList<Event> events( const QDate &date, bool sorted = false); /** Get events, which occur on the given date. The calendar filter is applied. */ QPtrList<Event> events( const QDateTime &qdt ); /** Get events in a range of dates. If inclusive is set to true, only events are returned, which are completely included in the range. The calendar filter is applied. */ QPtrList<Event> events( const QDate &start, const QDate &end, bool inclusive = false); /** Return filtered list of all events in calendar. */ virtual QPtrList<Event> events(); /** Return unfiltered list of all events in calendar. */ virtual QPtrList<Event> rawEvents() = 0; /** Add a todo to the todolist. @return true on success, false on error. */ virtual bool addTodo( Todo *todo ) = 0; virtual bool addTodoNoDup( Todo *todo ) = 0; /** Remove a todo from the todolist. */ virtual void deleteTodo( Todo * ) = 0; virtual void deleteJournal( Journal * ) = 0; /** Return filterd list of todos. */ virtual QPtrList<Todo> todos(); /** Searches todolist for an event with this unique string identifier, returns a pointer or null. */ virtual Todo *todo( const QString &uid ) = 0; virtual Todo *todo( QString, QString ) = 0; /** Returns list of todos due on the specified date. */ virtual QPtrList<Todo> todos( const QDate &date ) = 0; /** Return unfiltered list of todos. */ virtual QPtrList<Todo> rawTodos() = 0; /** Add a Journal entry to calendar. @return true on success, false on error. */ virtual bool addJournal( Journal * ) = 0; /** Return Journal for given date. */ virtual Journal *journal( const QDate & ) = 0; virtual QPtrList<Journal> journals4Date( const QDate & ) = 0; /** Return Journal with given UID. */ virtual Journal *journal( const QString &UID ) = 0; /** Return list of all Journal entries. */ virtual QPtrList<Journal> journals() = 0; /** Searches all incidence types for an incidence with this unique string identifier, returns a pointer or null. */ Incidence* incidence( const QString&UID ); /** Setup relations for an incidence. */ virtual void setupRelations( Incidence * ); /** Remove all relations to an incidence */ virtual void removeRelations( Incidence * ); /** Set calendar filter, which filters events for the events() functions. The Filter object is owned by the caller. */ void setFilter( CalFilter * ); /** Return calendar filter. */ CalFilter *filter(); virtual QDateTime nextAlarm( int daysTo ) = 0; virtual QString nextSummary( ) const = 0; virtual void reInitAlarmSettings() = 0; virtual QDateTime nextAlarmEventDateTime() const = 0; virtual void checkAlarmForIncidence( Incidence *, bool ) = 0; /** Return all alarms, which ocur in the given time interval. */ virtual Alarm::List alarms( const QDateTime &from, const QDateTime &to ) = 0; class Observer { public: virtual void calendarModified( bool, Calendar * ) = 0; }; void registerObserver( Observer * ); void setModified( bool ); /** Set product id returned by loadedProductId(). This function is only useful for the calendar loading code. */ void setLoadedProductId( const QString & ); /** Return product id taken from file that has been loaded. Returns QString::null, if no calendar has been loaded. */ QString loadedProductId(); int defaultCalendar(); void setDontDeleteIncidencesOnClose (); public slots: void setDefaultCalendar( int ); virtual void setCalendarEnabled( int id, bool enable ) = 0; virtual void setAlarmEnabled( int id, bool enable ) = 0; virtual void setReadOnly( int id, bool enable ) = 0; virtual void setDefaultCalendarEnabledOnly() = 0; virtual void setCalendarRemove( int id ) = 0; + virtual void getIncidenceCount( int calId, int& events, int & todos, int & journals) = 0; + signals: void calendarChanged(); void calendarSaved(); void calendarLoaded(); void addAlarm(const QDateTime &qdt, const QString ¬i ); void removeAlarm(const QDateTime &qdt, const QString ¬i ); protected: /** Get unfiltered events, which occur on the given date. */ virtual QPtrList<Event> rawEventsForDate( const QDateTime &qdt ) = 0; /** Get unfiltered events, which occur on the given date. */ virtual QPtrList<Event> rawEventsForDate( const QDate &date, bool sorted = false ) = 0; /** Get events in a range of dates. If inclusive is set to true, only events are returned, which are completely included in the range. */ virtual QPtrList<Event> rawEvents( const QDate &start, const QDate &end, bool inclusive = false ) = 0; Incidence *mNextAlarmIncidence; Incidence *mUndoIncidence; int mDefaultCalendar; bool mDeleteIncidencesOnClose; private: void init(); QString mOwner; // who the calendar belongs to QString mOwnerEmail; // email address of the owner int mTimeZone; // timezone OFFSET from GMT (MINUTES) bool mLocalTime; // use local time, not UTC or a time zone CalFilter *mFilter; CalFilter *mDefaultFilter; QString mTimeZoneId; Observer *mObserver; bool mNewObserver; bool mModified; QString mLoadedProductId; // This list is used to put together related todos QDict<Incidence> mOrphans; QDict<Incidence> mOrphanUids; }; } #endif diff --git a/libkcal/calendarlocal.cpp b/libkcal/calendarlocal.cpp index 1a1c6be..0ddfeca 100644 --- a/libkcal/calendarlocal.cpp +++ b/libkcal/calendarlocal.cpp @@ -263,399 +263,423 @@ void CalendarLocal::close() mJournalList.clear(); mEventList.setAutoDelete( false ); mTodoList.setAutoDelete( false ); mJournalList.setAutoDelete( false ); setModified( false ); } bool CalendarLocal::addAnniversaryNoDup( Event *event ) { QString cat; bool isBirthday = true; if( event->categoriesStr() == i18n( "Anniversary" ) ) { isBirthday = false; cat = i18n( "Anniversary" ); } else if( event->categoriesStr() == i18n( "Birthday" ) ) { isBirthday = true; cat = i18n( "Birthday" ); } else { qDebug("addAnniversaryNoDup called without fitting category! "); return false; } Event * eve; for ( eve = mEventList.first(); eve ; eve = mEventList.next() ) { if ( !(eve->categories().contains( cat ) )) continue; // now we have an event with fitting category if ( eve->dtStart().date() != event->dtStart().date() ) continue; // now we have an event with fitting category+date if ( eve->summary() != event->summary() ) continue; // now we have an event with fitting category+date+summary return false; } return addEvent( event ); } bool CalendarLocal::addEventNoDup( Event *event ) { Event * eve; for ( eve = mEventList.first(); eve ; eve = mEventList.next() ) { if ( *eve == *event ) { //qDebug("CalendarLocal::Duplicate event found! Not inserted! "); return false; } } return addEvent( event ); } bool CalendarLocal::addEvent( Event *event ) { insertEvent( event ); event->registerObserver( this ); setModified( true ); if ( event->calID() == 0 ) event->setCalID( mDefaultCalendar ); event->setCalEnabled( true ); return true; } void CalendarLocal::deleteEvent( Event *event ) { clearUndo(event); if ( mEventList.removeRef( event ) ) { setModified( true ); } } Event *CalendarLocal::event( const QString &uid ) { Event *event; Event *retVal = 0; for ( event = mEventList.first(); event; event = mEventList.next() ) { if ( event->calEnabled() && event->uid() == uid ) { if ( retVal ) { if ( retVal->calID() > event->calID() ) { retVal = event; } } else { retVal = event; } } } return retVal; } bool CalendarLocal::addTodoNoDup( Todo *todo ) { Todo * eve; for ( eve = mTodoList.first(); eve ; eve = mTodoList.next() ) { if ( *eve == *todo ) { //qDebug("duplicate todo found! not inserted! "); return false; } } return addTodo( todo ); } bool CalendarLocal::addTodo( Todo *todo ) { mTodoList.append( todo ); todo->registerObserver( this ); // Set up subtask relations setupRelations( todo ); setModified( true ); if ( todo->calID() == 0 ) todo->setCalID( mDefaultCalendar ); todo->setCalEnabled( true ); return true; } void CalendarLocal::deleteTodo( Todo *todo ) { // Handle orphaned children removeRelations( todo ); clearUndo(todo); if ( mTodoList.removeRef( todo ) ) { setModified( true ); } } QPtrList<Todo> CalendarLocal::rawTodos() { QPtrList<Todo> el; for ( Todo *it = mTodoList.first(); it; it = mTodoList.next() ) if ( it->calEnabled() ) el.append( it ); return el; } Todo *CalendarLocal::todo( QString syncProf, QString id ) { Todo *todo; for ( todo = mTodoList.first(); todo; todo = mTodoList.next() ) { if ( todo->calEnabled() && todo->getID( syncProf ) == id ) return todo; } return 0; } void CalendarLocal::removeSyncInfo( QString syncProfile) { QPtrList<Incidence> all = rawIncidences() ; Incidence *inc; for ( inc = all.first(); inc; inc = all.next() ) { inc->removeID( syncProfile ); } if ( syncProfile.isEmpty() ) { QPtrList<Event> el; Event *todo; for ( todo = mEventList.first(); todo; todo = mEventList.next() ) { if ( todo->uid().left( 15 ) == QString("last-syncEvent-") ) el.append( todo ); } for ( todo = el.first(); todo; todo = el.next() ) { deleteIncidence ( todo ); } } else { Event *lse = event( "last-syncEvent-"+ syncProfile); if ( lse ) deleteIncidence ( lse ); } } QPtrList<Event> CalendarLocal::getExternLastSyncEvents() { QPtrList<Event> el; Event *todo; for ( todo = mEventList.first(); todo; todo = mEventList.next() ) { if ( todo->uid().left( 15 ) == QString("last-syncEvent-") ) if ( todo->summary().left(3) == "E: " ) el.append( todo ); } return el; } Event *CalendarLocal::event( QString syncProf, QString id ) { Event *todo; for ( todo = mEventList.first(); todo; todo = mEventList.next() ) { if ( todo->calEnabled() && todo->getID( syncProf ) == id ) return todo; } return 0; } Todo *CalendarLocal::todo( const QString &uid ) { - Todo *todo;; + Todo *todo; Todo *retVal = 0; for ( todo = mTodoList.first(); todo; todo = mTodoList.next() ) { if ( todo->calEnabled() && todo->uid() == uid ) { if ( retVal ) { if ( retVal->calID() > todo->calID() ) { retVal = todo; } } else { retVal = todo; } } } return retVal; } +void CalendarLocal::getIncidenceCount( int calId, int& events, int & todos, int & journals) +{ + events = 0; + todos = 0; + journals = 0; + { + Todo *todo; + for ( todo = mTodoList.first(); todo; todo = mTodoList.next() ) { + if ( todo->calID() == calId ) + ++todos; + } + } + { + Event *todo; + for ( todo = mEventList.first(); todo; todo = mEventList.next() ) { + if ( todo->calID() == calId ) + ++events; + + } + } + for ( Journal *it = mJournalList.first(); it; it = mJournalList.next() ) + if ( it->calID() == calId ) ++journals; + +} QString CalendarLocal::nextSummary() const { return mNextSummary; } QDateTime CalendarLocal::nextAlarmEventDateTime() const { return mNextAlarmEventDateTime; } void CalendarLocal::checkAlarmForIncidence( Incidence * incidence, bool deleted) { //mNextAlarmIncidence //mNextAlarmDateTime //return mNextSummary; //return mNextAlarmEventDateTime; bool newNextAlarm = false; bool computeNextAlarm = false; bool ok; int offset; QDateTime nextA; // QString nextSum; //QDateTime nextEvent; if ( mNextAlarmIncidence == 0 || incidence == 0 ) { computeNextAlarm = true; } else { if ( ! deleted ) { nextA = incidence->getNextAlarmDateTime(& ok, &offset, QDateTime::currentDateTime() ) ; if ( ok ) { if ( nextA < mNextAlarmDateTime ) { deRegisterAlarm(); mNextAlarmDateTime = nextA; mNextSummary = incidence->summary(); mNextAlarmEventDateTime = nextA.addSecs(offset ) ; mNextAlarmEventDateTimeString = KGlobal::locale()->formatDateTime(mNextAlarmEventDateTime); newNextAlarm = true; mNextAlarmIncidence = incidence; } else { if ( incidence == mNextAlarmIncidence ) { computeNextAlarm = true; } } } else { if ( mNextAlarmIncidence == incidence ) { computeNextAlarm = true; } } } else { // deleted if ( incidence == mNextAlarmIncidence ) { computeNextAlarm = true; } } } if ( computeNextAlarm ) { deRegisterAlarm(); nextA = nextAlarm( 1000 ); if (! mNextAlarmIncidence ) { return; } newNextAlarm = true; } if ( newNextAlarm ) registerAlarm(); } QString CalendarLocal:: getAlarmNotification() { QString ret; // this should not happen if (! mNextAlarmIncidence ) return "cal_alarm"+ mNextSummary.left( 25 )+"\n"+mNextAlarmEventDateTimeString; Alarm* alarm = mNextAlarmIncidence->alarms().first(); if ( alarm->type() == Alarm::Procedure ) { ret = "proc_alarm" + alarm->programFile()+"+++"; } else { ret = "audio_alarm" +alarm->audioFile() +"+++"; } ret += "cal_alarm"+ mNextSummary.left( 25 ); if ( mNextSummary.length() > 25 ) ret += "\n" + mNextSummary.mid(25, 25 ); ret+= "\n"+mNextAlarmEventDateTimeString; return ret; } void CalendarLocal::registerAlarm() { mLastAlarmNotificationString = getAlarmNotification(); // qDebug("++ register Alarm %s %s",mNextAlarmDateTime.toString().latin1(), mLastAlarmNotificationString.latin1() ); emit addAlarm ( mNextAlarmDateTime, mLastAlarmNotificationString ); // #ifndef DESKTOP_VERSION // AlarmServer::addAlarm ( mNextAlarmDateTime,"koalarm", mLastAlarmNotificationString.latin1() ); // #endif } void CalendarLocal::deRegisterAlarm() { if ( mLastAlarmNotificationString.isNull() ) return; //qDebug("-- deregister Alarm %s ", mLastAlarmNotificationString.latin1() ); emit removeAlarm ( mNextAlarmDateTime, mLastAlarmNotificationString ); mNextAlarmEventDateTime = QDateTime(); // #ifndef DESKTOP_VERSION // AlarmServer::deleteAlarm (mNextAlarmDateTime ,"koalarm" ,mLastAlarmNotificationString.latin1() ); // #endif } QPtrList<Todo> CalendarLocal::todos( const QDate &date ) { QPtrList<Todo> todos; Todo *todo; for ( todo = mTodoList.first(); todo; todo = mTodoList.next() ) { if ( !todo->calEnabled() ) continue; if ( todo->hasDueDate() && todo->dtDue().date() == date ) { todos.append( todo ); } } filter()->apply( &todos ); return todos; } void CalendarLocal::reInitAlarmSettings() { if ( !mNextAlarmIncidence ) { nextAlarm( 1000 ); } deRegisterAlarm(); mNextAlarmIncidence = 0; checkAlarmForIncidence( 0, false ); } QDateTime CalendarLocal::nextAlarm( int daysTo ) { QDateTime nextA = QDateTime::currentDateTime().addDays( daysTo ); QDateTime start = QDateTime::currentDateTime().addSecs( 30 ); QDateTime next; Event *e; bool ok; bool found = false; int offset; mNextAlarmIncidence = 0; for( e = mEventList.first(); e; e = mEventList.next() ) { if ( !e->calEnabled() ) continue; next = e->getNextAlarmDateTime(& ok, &offset, QDateTime::currentDateTime() ) ; if ( ok ) { if ( next < nextA ) { nextA = next; found = true; mNextSummary = e->summary(); mNextAlarmEventDateTime = next.addSecs(offset ) ; mNextAlarmIncidence = (Incidence *) e; } } } Todo *t; for( t = mTodoList.first(); t; t = mTodoList.next() ) { if ( !t->calEnabled() ) continue; next = t->getNextAlarmDateTime(& ok, &offset, QDateTime::currentDateTime() ) ; if ( ok ) { if ( next < nextA ) { nextA = next; found = true; mNextSummary = t->summary(); mNextAlarmEventDateTime = next.addSecs(offset ); mNextAlarmIncidence = (Incidence *) t; } } } if ( mNextAlarmIncidence ) { mNextAlarmEventDateTimeString = KGlobal::locale()->formatDateTime(mNextAlarmEventDateTime); mNextAlarmDateTime = nextA; } return nextA; } Alarm::List CalendarLocal::alarmsTo( const QDateTime &to ) { return alarms( QDateTime( QDate( 1900, 1, 1 ) ), to ); } Alarm::List CalendarLocal::alarms( const QDateTime &from, const QDateTime &to ) { Alarm::List alarms; Event *e; for( e = mEventList.first(); e; e = mEventList.next() ) { if ( !e->calEnabled() ) continue; if ( e->doesRecur() ) appendRecurringAlarms( alarms, e, from, to ); else appendAlarms( alarms, e, from, to ); } Todo *t; diff --git a/libkcal/calendarlocal.h b/libkcal/calendarlocal.h index a7a85c8..ca0bd98 100644 --- a/libkcal/calendarlocal.h +++ b/libkcal/calendarlocal.h @@ -1,230 +1,231 @@ /* This file is part of libkcal. Copyright (c) 1998 Preston Brown Copyright (c) 2001,2003 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. */ #ifndef KCAL_CALENDARLOCAL_H #define KCAL_CALENDARLOCAL_H #include "calendar.h" namespace KCal { class CalFormat; /** This class provides a calendar stored as a local file. */ class CalendarLocal : public Calendar { public: /** Constructs a new calendar, with variables initialized to sane values. */ CalendarLocal(); /** Constructs a new calendar, with variables initialized to sane values. */ CalendarLocal( const QString &timeZoneId ); ~CalendarLocal(); void addCalendar( Calendar* ); bool addCalendarFile( QString name, int id ); bool mergeCalendarFile( QString name ); bool mergeCalendar( Calendar* cal ); Incidence* incidenceForUid( const QString& uid, bool doNotCheckDuplicates ); void setSyncEventsReadOnly(); void stopAllTodos(); /** Loads a calendar on disk in vCalendar or iCalendar format into the current calendar. Any information already present is lost. @return true, if successfull, false on error. @param fileName the name of the calendar on disk. */ bool load( const QString &fileName ); /** Writes out the calendar to disk in the specified \a format. CalendarLocal takes ownership of the CalFormat object. @return true, if successfull, false on error. @param fileName the name of the file */ bool save( const QString &fileName, CalFormat *format = 0 ); /** Clears out the current calendar, freeing all used memory etc. etc. */ void close(); void save() {} /** Add Event to calendar. */ void removeSyncInfo( QString syncProfile); bool addAnniversaryNoDup( Event *event ); bool addEventNoDup( Event *event ); bool addEvent( Event *event ); /** Deletes an event from this calendar. */ void deleteEvent( Event *event ); /** Retrieves an event on the basis of the unique string ID. */ Event *event( const QString &uid ); /** Return unfiltered list of all events in calendar. */ QPtrList<Event> rawEvents(); QPtrList<Event> getExternLastSyncEvents(); /** Add a todo to the todolist. */ bool addTodo( Todo *todo ); bool addTodoNoDup( Todo *todo ); /** Remove a todo from the todolist. */ void deleteTodo( Todo * ); /** Searches todolist for an event with this unique string identifier, returns a pointer or null. */ Todo *todo( const QString &uid ); /** Return list of all todos. */ QPtrList<Todo> rawTodos(); /** Returns list of todos due on the specified date. */ QPtrList<Todo> todos( const QDate &date ); /** Return list of all todos. Workaround because compiler does not recognize function of base class. */ QPtrList<Todo> todos() { return Calendar::todos(); } /** Add a Journal entry to calendar. */ bool addJournal( Journal * ); /** Remove a Journal from the calendar. */ void deleteJournal( Journal * ); /** Return Journal for given date. */ Journal *journal( const QDate & ); QPtrList<Journal> journals4Date( const QDate & ); /** Return Journal with given UID. */ Journal *journal( const QString &uid ); /** Return list of all Journals stored in calendar. */ QPtrList<Journal> journals(); /** Return all alarms, which ocur in the given time interval. */ Alarm::List alarms( const QDateTime &from, const QDateTime &to ); /** Return all alarms, which ocur before given date. */ Alarm::List alarmsTo( const QDateTime &to ); QDateTime nextAlarm( int daysTo ) ; QDateTime nextAlarmEventDateTime() const; void checkAlarmForIncidence( Incidence *, bool deleted ) ; void registerAlarm(); void deRegisterAlarm(); QString getAlarmNotification(); QString nextSummary() const ; /** This method should be called whenever a Event is modified directly via it's pointer. It makes sure that the calendar is internally consistent. */ void update( IncidenceBase *incidence ); /** Builds and then returns a list of all events that match for the date specified. useful for dayView, etc. etc. */ QPtrList<Event> rawEventsForDate( const QDate &date, bool sorted = false ); /** Get unfiltered events for date \a qdt. */ QPtrList<Event> rawEventsForDate( const QDateTime &qdt ); /** Get unfiltered events in a range of dates. If inclusive is set to true, only events are returned, which are completely included in the range. */ QPtrList<Event> rawEvents( const QDate &start, const QDate &end, bool inclusive = false ); Todo *todo( QString, QString ); Event *event( QString, QString ); + void getIncidenceCount( int calId, int& events, int & todos, int & journals); public slots: void setCalendarEnabled( int id, bool enable ); void setAlarmEnabled( int id, bool enable ); void setReadOnly( int id, bool enable ); void setDefaultCalendarEnabledOnly(); void setCalendarRemove( int id ); protected: // Event* mNextAlarmEvent; QString mNextSummary; QString mNextAlarmEventDateTimeString; QString mLastAlarmNotificationString; QDateTime mNextAlarmEventDateTime; QDateTime mNextAlarmDateTime; void reInitAlarmSettings(); /** Notification function of IncidenceBase::Observer. */ void incidenceUpdated( IncidenceBase *i ) { update( i ); } /** inserts an event into its "proper place" in the calendar. */ void insertEvent( Event *event ); /** Append alarms of incidence in interval to list of alarms. */ void appendAlarms( Alarm::List &alarms, Incidence *incidence, const QDateTime &from, const QDateTime &to ); /** Append alarms of recurring events in interval to list of alarms. */ void appendRecurringAlarms( Alarm::List &alarms, Incidence *incidence, const QDateTime &from, const QDateTime &to ); private: void init(); QPtrList<Event> mEventList; QPtrList<Todo> mTodoList; QPtrList<Journal> mJournalList; }; } #endif |