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diff --git a/libkcal/resourcecached.h b/libkcal/resourcecached.h
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+/*
+    This file is part of libkcal.
+
+    Copyright (c) 2003,2004 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., 51 Franklin Street, Fifth Floor,
+    Boston, MA 02110-1301, USA.
+*/
+#ifndef KCAL_RESOURCECACHED_H
+#define KCAL_RESOURCECACHED_H
+
+#include "resourcecalendar.h"
+
+#include "libemailfunctions/idmapper.h"
+#include "incidence.h"
+#include "calendarlocal.h"
+
+#include <kconfig.h>
+
+#include <qptrlist.h>
+#include <qstring.h>
+#include <qdatetime.h>
+#include <qtimer.h>
+
+#include <kdepimmacros.h>
+
+namespace KCal {
+
+/**
+  This class provides a calendar resource using a local CalendarLocal object to
+  cache the calendar data.
+*/
+class KDE_EXPORT ResourceCached : public ResourceCalendar,
+                       public KCal::Calendar::Observer
+{
+    Q_OBJECT
+  public:
+    /**
+      Reload policy.
+
+      @see setReloadPolicy(), reloadPolicy()
+    */
+    enum { ReloadNever, ReloadOnStartup, ReloadInterval };
+    /**
+      Save policy.
+
+      @see setSavePolicy(), savePolicy()
+    */
+    enum { SaveNever, SaveOnExit, SaveInterval, SaveDelayed, SaveAlways };
+
+    ResourceCached( const KConfig * );
+    virtual ~ResourceCached();
+
+    void readConfig( const KConfig *config );
+    void writeConfig( KConfig *config );
+
+    /**
+      Set reload policy. This controls when the cache is refreshed.
+
+      ReloadNever     never reload
+      ReloadOnStartup reload when resource is started
+      ReloadInterval  reload regularly after given interval
+    */
+    void setReloadPolicy( int policy );
+    /**
+      Return reload policy.
+
+      @see setReloadPolicy()
+    */
+    int reloadPolicy() const;
+
+    /**
+      Set reload interval in minutes which is used when reload policy is
+      ReloadInterval.
+    */
+    void setReloadInterval( int minutes );
+
+    /**
+      Return reload interval in minutes.
+    */
+    int reloadInterval() const;
+
+    /**
+      Set save policy. This controls when the cache is refreshed.
+
+      SaveNever     never save
+      SaveOnExit    save when resource is exited
+      SaveInterval  save regularly after given interval
+      SaveDelayed   save after small delay
+      SaveAlways    save on every change
+    */
+    void setSavePolicy( int policy );
+    /**
+      Return save policy.
+
+      @see setsavePolicy()
+    */
+    int savePolicy() const;
+
+    /**
+      Set save interval in minutes which is used when save policy is
+      SaveInterval.
+    */
+    void setSaveInterval( int minutes );
+
+    /**
+      Return save interval in minutes.
+    */
+    int saveInterval() const;
+
+    /**
+      Return time of last load.
+    */
+    QDateTime lastLoad() const;
+
+    /**
+      Return time of last save.
+    */
+    QDateTime lastSave() const;
+
+    /**
+      Add event to calendar.
+    */
+    bool addEvent(Event *anEvent);
+    /**
+      Deletes an event from this calendar.
+    */
+    bool deleteEvent(Event *);
+
+    /**
+      Retrieves an event on the basis of the unique string ID.
+    */
+    Event *event(const QString &UniqueStr);
+    /**
+      Return filtered list of all events in calendar.
+    */
+    Event::List events();
+    /**
+      Return unfiltered list of all events in calendar.
+    */
+    Event::List rawEvents( EventSortField sortField = EventSortUnsorted, SortDirection sortDirection = SortDirectionAscending );
+    /**
+      Builds and then returns a list of all events that match for the
+      date specified. useful for dayView, etc. etc.
+    */
+    Event::List rawEventsForDate( const QDate &date, EventSortField sortField = EventSortUnsorted, SortDirection sortDirection = SortDirectionAscending );
+
+    /**
+      Get unfiltered events for date \a qdt.
+    */
+    Event::List 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.
+    */
+    Event::List rawEvents( const QDate &start, const QDate &end,
+                               bool inclusive = false );
+
+    /**
+      Add a todo to the todolist.
+    */
+    bool addTodo( Todo *todo );
+    /**
+      Remove a todo from the todolist.
+    */
+    bool 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.
+    */
+    Todo::List rawTodos( TodoSortField sortField = TodoSortUnsorted, SortDirection sortDirection = SortDirectionAscending );
+    /**
+      Returns list of todos due on the specified date.
+    */
+    Todo::List rawTodosForDate( const QDate &date );
+    /**
+      Add a Journal entry to calendar
+    */
+    virtual bool addJournal( Journal * );
+    /**
+      Remove a Journal from the calendar
+    */
+    virtual bool deleteJournal( Journal * );
+    /**
+      Return Journal with given unique id.
+    */
+    virtual Journal *journal( const QString &uid );
+    /**
+      Return list of all journals.
+    */
+    Journal::List rawJournals( JournalSortField sortField = JournalSortUnsorted,SortDirection sortDirection = SortDirectionAscending );
+    /**
+      Return list of journals for the given date.
+    */
+    Journal::List rawJournalsForDate( const QDate &date );
+
+    /**
+      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 );
+
+    /**
+      Set id of timezone, e.g. "Europe/Berlin"
+    */
+    void setTimeZoneId( const QString &timeZoneId );
+
+    QString timeZoneId() const;
+
+    /**
+      Return the owner of the calendar's full name.
+    */
+    const Person &getOwner() const;
+    /**
+      Set the owner of the calendar. Should be owner's full name.
+    */
+    void setOwner( const Person &owner );
+
+    void enableChangeNotification();
+    void disableChangeNotification();
+
+    void clearChange( Incidence * );
+    void clearChange( const QString &uid );
+
+    void clearChanges();
+
+    bool hasChanges() const;
+
+    Incidence::List allChanges() const;
+
+    Incidence::List addedIncidences() const;
+    Incidence::List changedIncidences() const;
+    Incidence::List deletedIncidences() const;
+
+    /**
+      Loads the cache, this method should be called on load.
+     */
+    void loadCache();
+
+    /**
+      Saves the cache back.
+     */
+    void saveCache();
+
+    /**
+      Clear cache.
+    */
+    void clearCache();
+
+    void cleanUpEventCache( const KCal::Event::List &eventList );
+    void cleanUpTodoCache( const KCal::Todo::List &todoList );
+
+    /**
+      Returns a reference to the id mapper.
+     */
+    KPIM::IdMapper& idMapper();
+
+  protected:
+    // From Calendar::Observer
+    void calendarIncidenceAdded( KCal::Incidence *incidence );
+    void calendarIncidenceChanged( KCal::Incidence *incidence );
+    void calendarIncidenceDeleted( KCal::Incidence *incidence );
+
+    CalendarLocal mCalendar;
+
+    /**
+      Virtual method from KRES::Resource, called when the last instace of the
+      resource is closed
+     */
+    virtual void doClose();
+    /**
+      Opens the resource. Dummy implementation, so child classes don't have to
+      reimplement this method. By default, this does not do anything, but can be reimplemented in child classes
+     */
+    virtual bool doOpen();
+    /**
+      Check if reload required according to reload policy.
+    */
+    bool checkForReload();
+    /**
+      Check if save required according to save policy.
+    */
+    bool checkForSave();
+
+    void checkForAutomaticSave();
+
+    void addInfoText( QString & ) const;
+
+    void setupSaveTimer();
+    void setupReloadTimer();
+
+    /**
+      This method is used by loadCache() and saveCache(), reimplement
+      it to change the location of the cache.
+     */
+    virtual QString cacheFile() const;
+
+    /**
+      Functions for keeping the changes persistent.
+     */
+    virtual QString changesCacheFile( const QString& ) const;
+    void loadChangesCache( QMap<Incidence*, bool>&, const QString& );
+    void loadChangesCache();
+    void saveChangesCache( const QMap<Incidence*, bool>&, const QString& );
+    void saveChangesCache();
+
+  protected slots:
+    void slotReload();
+    void slotSave();
+
+    void setIdMapperIdentifier();
+
+  private:
+    int mReloadPolicy;
+    int mReloadInterval;
+    QTimer mReloadTimer;
+    bool mReloaded;
+
+    int mSavePolicy;
+    int mSaveInterval;
+    QTimer mSaveTimer;
+
+    QDateTime mLastLoad;
+    QDateTime mLastSave;
+
+    QMap<KCal::Incidence *,bool> mAddedIncidences;
+    QMap<KCal::Incidence *,bool> mChangedIncidences;
+    QMap<KCal::Incidence *,bool> mDeletedIncidences;
+
+    KPIM::IdMapper mIdMapper;
+
+    class Private;
+    Private *d;
+};
+
+}
+
+#endif