Fixed correct expanding of names and implemented the dataProvider class

etemplate/js/et2_dataview_interfaces.js

@@ -33,3 +33,49 @@ var et2_dataview_IViewRange = new Interface({
 	setViewRange: function(_range) {}
 
 });
+
+/**
+ * Interface which objects have to implement, that want to act as low level
+ * datasource.
+ */
+var et2_IRowFetcher = new Interface({
+
+	/**
+	 * @param _fetchList is an array consisting of objects whith the entries
+	 * 	"startIdx" and "count"
+	 * @param _callback is the callback which is called when the data is ready
+	 * 	(may be immediately or deferred). The callback has the following
+	 * 	signature:
+	 * 		function (_rows)
+	 * 	where _rows is an associative array which contains the data for that row.
+	 * @param _context is the context in which the callback should run.
+	 */
+	getRows: function(_fetchList, _callback, _context) {}
+
+});
+
+/**
+ * Interface the data provider has to implement
+ */
+var et2_IDataProvider = new Interface({
+
+	/**
+	 * Returns the total count of grid elements
+	 */
+	getCount: function() {},
+
+	/**
+	 * Registers the given dataRow for the given index. Calls _dataRow.updateData
+	 * as soon as data is available for that row.
+	 */
+	registerDataRow: function(_dataRow, _idx) {},
+
+	/**
+	 * Stops calling _dataRow.updateData for the dataRow registered for the given
+	 * index.
+	 */
+	unregisterDataRow: function(_idx) {}
+
+});
+
+