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