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|
/*=========================================================================
| KCalDAV
|--------------------------------------------------------------------------
| (c) 2010 Timothy Pearson
| (c) 2009 Kumaran Santhanam (initial KDE4 version)
|
| This project is released under the GNU General Public License.
| Please see the file COPYING for more details.
|--------------------------------------------------------------------------
| Main interface to the KResource system.
========================================================================*/
/*=========================================================================
| INCLUDES
========================================================================*/
#ifndef KCAL_RESOURCECALDAV_H
#define KCAL_RESOURCECALDAV_H
#include "preferences.h"
#include <qthread.h>
#include <qptrqueue.h>
#include <libkcal/resourcecached.h>
#include <kabc/locknull.h>
#include <kdepimmacros.h>
#include <kconfig.h>
namespace KCal {
class CalDavReader;
class CalDavWriter;
/*=========================================================================
| CLASS
========================================================================*/
/**
* This class provides a resource for accessing calendars via CalDAV protocol.
*/
class KDE_EXPORT ResourceCalDav : public ResourceCached
{
Q_OBJECT
public:
explicit ResourceCalDav( const KConfig *config );
virtual ~ResourceCalDav();
void readConfig( const KConfig *config );
void writeConfig( KConfig *config );
/**
* @return This resource preferences.
*/
CalDavPrefs* prefs() {
return mPrefs;
}
/**
* @return This resource preferences.
*/
const CalDavPrefs* prefs() const {
return mPrefs;
}
virtual void setReadOnly(bool v);
protected slots:
void loadFinished();
void writingFinished();
protected:
struct LoadingTask {
QString url;
};
struct WritingTask {
QString url;
QString added;
QString changed;
QString deleted;
};
// virtual bool doLoad( bool syncCache );
// virtual bool doSave( bool syncCache );
virtual bool doLoad();
virtual bool doSave();
virtual bool doSave( bool syncCache, Incidence *incidence );
virtual KABC::Lock* lock();
/**
* Creates prefs and configures them.
* @return a newly created preferences object. It should be removed by the caller.
*/
CalDavPrefs* createPrefs() const;
/**
* Initializes internal state.
* Particulary, sets save and reload policies to default values,
* creates writing and reading jobs and preferences objects.
*/
void init();
/**
* Initiates calendar loading process.
* @param url URL to load calendar data from.
*/
void startLoading(const QString& url);
/**
* Checks if the data is correct and can be parsed.
* @param data ical string to check.
* @return true if the data is correct, false otherwise.
*/
bool checkData(const QString& data);
/**
* Parses the data and adds events to the calendar.
* @param data calendar data.
* @return true on success, false on fail.
*/
bool parseData(const QString& data);
/**
* Initiates calendar writing process.
* @param url URL to save calendar data to.
*/
void startWriting(const QString& url);
/**
* Returns a list of incidences as a valid iCalendar string.
* @param inc list of incidences.
* @return a string in iCalendar format which describes the given incidences.
*/
QString getICalString(const Incidence::List& inc);
/**
* Changes read-only status of incidences from a given list.
* @param inc list of incidences.
* @param readOnly read-only status that all the incidences should have after the method finishes.
*/
static void setIncidencesReadOnly(Incidence::List& inc, bool readOnly);
/**
* Ensures incidences' read-only states are the same as the calendar's read-only state.
*/
void ensureReadOnlyFlagHonored();
/**
* If the loading queue is empty or the loader is not ready, does nothing.
* Otherwise, pops a head element and starts a loading process for it.
*/
void loadingQueuePop();
/**
* Pushes the given loading task to the loading queue.
* Then calls loadingQueuePop.
*/
void loadingQueuePush(const LoadingTask *task);
/**
* If the writing queue is empty or the writer is not ready, does nothing.
* Otherwise, pops a head element and starts a writing process for it.
*/
void writingQueuePop();
/**
* Pushes the given writing task to the writing queue.
* Then calls writingQueuePop.
*/
void writingQueuePush(const WritingTask *task);
private:
// constants: =============================================================
/// Termination waiting time in milliseconds. Used to terminate job threads.
static const unsigned long TERMINATION_WAITING_TIME;
/**
* Resource caches only events which are from the interval [-CACHE_DAYS, CACHE_DAYS].
*/
static const int CACHE_DAYS;
static const int DEFAULT_RELOAD_INTERVAL;
static const int DEFAULT_SAVE_INTERVAL;
static const int DEFAULT_RELOAD_POLICY;
static const int DEFAULT_SAVE_POLICY;
// members: ===============================================================
KABC::LockNull mLock;
CalDavPrefs* mPrefs;
CalDavReader* mLoader;
CalDavWriter* mWriter;
bool mLoadingQueueReady;
QPtrQueue<LoadingTask> mLoadingQueue;
bool mWritingQueueReady;
QPtrQueue<WritingTask> mWritingQueue;
};
} // namespace KCal
#endif // KCAL_RESOURCECALDAV_H
|
