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98 lines
3.4 KiB
JavaScript
98 lines
3.4 KiB
JavaScript
/**
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* EGroupware eTemplate2 - Contains interfaces used inside the dataview
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*
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* @license http://opensource.org/licenses/gpl-license.php GPL - GNU General Public License
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* @package etemplate
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* @subpackage dataview
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* @link http://www.egroupware.org
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* @author Andreas Stöckel
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* @copyright Stylite 2011
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* @version $Id$
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*/
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/*egw:uses
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et2_core_inheritance;
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*/
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var et2_dataview_IInvalidatable = new Interface({
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invalidate: function() {}
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});
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var et2_dataview_IViewRange = new Interface({
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setViewRange: function(_range) {}
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});
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/**
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* Interface a data provider has to implement. The data provider functions are
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* called by the et2_dataview_controller class. The data provider basically acts
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* like the egw api egw_data extension, but some etemplate specific stuff has
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* been stripped away -- the implementation (for the nextmatch widget that is
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* et2_extension_nextmatch_dataprovider) has to take care of that.
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*/
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var et2_IDataProvider = new Interface({
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/**
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* This function is used by the et2_dataview_controller to fetch data for
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* a certain range. The et2_dataview_controller provides data which allows
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* to only update elements which really have changed.
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*
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* @param queriedRange is an object of the following form:
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* {
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* start: <START INDEX>,
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* num_rows: <COUNT OF ENTRIES>
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* }
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* @param knownRange is an array of the above form and informs the
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* implementation which range is already known to the client. This parameter
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* may be null in order to indicate that the client currently has no valid
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* data.
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* @param lastModification is the last timestamp that was returned from the
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* data provider and for which the client has data. It may be null in order
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* to indicate, that the client currently has no data or needs a complete
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* refresh.
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* @param callback is the function that should get called, once the data
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* is available. The data passed to the callback function has the
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* following form:
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* {
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* order: [uid, ...],
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* total: <TOTAL COUNT>,
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* lastModification: <LAST MODIFICATION TIMESTAMP>
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* }
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* @param context is the context in which the callback function will get
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* called.
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*/
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dataFetch: function (_queriedRange, _lastModification, _callback, _context) {},
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/**
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* Registers the intrest in a certain uid for a callback function. If
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* the data for that uid changes or gets loaded, the given callback
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* function is called. If the data for the given uid is available at the
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* time of registering the callback, the callback is called immediately.
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*
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* @param _uid is the uid for which the callback should be registered.
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* @param _callback is the callback which should get called.
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* @param _context is an optional parameter which can
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*/
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dataRegisterUID: function (_uid, _callback, _context) {},
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/**
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* Unregisters the intrest of updates for a certain data uid.
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*
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* @param _uid is the data uid for which the callbacks should be
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* unregistered.
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* @param _callback specifies the specific callback that should be
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* unregistered. If it evaluates to false, all callbacks (or those
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* matching the optionally given context) are removed.
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* @param _context specifies the callback context that should be
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* unregistered. If it evaluates to false, all callbacks (or those
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* matching the optionally given callback function) are removed.
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*/
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dataUnregisterUID: function (_uid, _callback, _context) {}
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});
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