Add the Ajax core JS file (forgot to commit it before!)

media/src/core/core.ajax.js

@@ -0,0 +1,184 @@
+
+
+/**
+ * Update the table using an Ajax call
+ *  @param {object} oSettings dataTables settings object
+ *  @returns {boolean} Block the table drawing or not
+ *  @private
+ */
+function _fnAjaxUpdate( oSettings )
+{
+	if ( oSettings.bAjaxDataGet )
+	{
+		oSettings.iDraw++;
+		_fnProcessingDisplay( oSettings, true );
+		var iColumns = oSettings.aoColumns.length;
+		var aoData = _fnAjaxParameters( oSettings );
+		_fnServerParams( oSettings, aoData );
+		
+		oSettings.fnServerData.call( oSettings.oInstance, oSettings.sAjaxSource, aoData,
+			function(json) {
+				_fnAjaxUpdateDraw( oSettings, json );
+			}, oSettings );
+		return false;
+	}
+	else
+	{
+		return true;
+	}
+}
+
+
+/**
+ * Build up the parameters in an object needed for a server-side processing request
+ *  @param {object} oSettings dataTables settings object
+ *  @returns {bool} block the table drawing or not
+ *  @private
+ */
+function _fnAjaxParameters( oSettings )
+{
+	var iColumns = oSettings.aoColumns.length;
+	var aoData = [], mDataProp;
+	var i;
+	
+	aoData.push( { "name": "sEcho",          "value": oSettings.iDraw } );
+	aoData.push( { "name": "iColumns",       "value": iColumns } );
+	aoData.push( { "name": "sColumns",       "value": _fnColumnOrdering(oSettings) } );
+	aoData.push( { "name": "iDisplayStart",  "value": oSettings._iDisplayStart } );
+	aoData.push( { "name": "iDisplayLength", "value": oSettings.oFeatures.bPaginate !== false ?
+		oSettings._iDisplayLength : -1 } );
+		
+	for ( i=0 ; i<iColumns ; i++ )
+	{
+	  mDataProp = oSettings.aoColumns[i].mDataProp;
+		aoData.push( { "name": "mDataProp_"+i, "value": typeof(mDataProp)=="function" ? 'function' : mDataProp } );
+	}
+	
+	/* Filtering */
+	if ( oSettings.oFeatures.bFilter !== false )
+	{
+		aoData.push( { "name": "sSearch", "value": oSettings.oPreviousSearch.sSearch } );
+		aoData.push( { "name": "bRegex",  "value": oSettings.oPreviousSearch.bRegex } );
+		for ( i=0 ; i<iColumns ; i++ )
+		{
+			aoData.push( { "name": "sSearch_"+i,     "value": oSettings.aoPreSearchCols[i].sSearch } );
+			aoData.push( { "name": "bRegex_"+i,      "value": oSettings.aoPreSearchCols[i].bRegex } );
+			aoData.push( { "name": "bSearchable_"+i, "value": oSettings.aoColumns[i].bSearchable } );
+		}
+	}
+	
+	/* Sorting */
+	if ( oSettings.oFeatures.bSort !== false )
+	{
+		var iFixed = oSettings.aaSortingFixed !== null ? oSettings.aaSortingFixed.length : 0;
+		var iUser = oSettings.aaSorting.length;
+		aoData.push( { "name": "iSortingCols",   "value": iFixed+iUser } );
+		for ( i=0 ; i<iFixed ; i++ )
+		{
+			aoData.push( { "name": "iSortCol_"+i,  "value": oSettings.aaSortingFixed[i][0] } );
+			aoData.push( { "name": "sSortDir_"+i,  "value": oSettings.aaSortingFixed[i][1] } );
+		}
+		
+		for ( i=0 ; i<iUser ; i++ )
+		{
+			aoData.push( { "name": "iSortCol_"+(i+iFixed),  "value": oSettings.aaSorting[i][0] } );
+			aoData.push( { "name": "sSortDir_"+(i+iFixed),  "value": oSettings.aaSorting[i][1] } );
+		}
+		
+		for ( i=0 ; i<iColumns ; i++ )
+		{
+			aoData.push( { "name": "bSortable_"+i,  "value": oSettings.aoColumns[i].bSortable } );
+		}
+	}
+	
+	return aoData;
+}
+
+
+/**
+ * Add Ajax parameters from plugins
+ *  @param {object} oSettings dataTables settings object
+ *  @param array {objects} aoData name/value pairs to send to the server
+ *  @private
+ */
+function _fnServerParams( oSettings, aoData )
+{
+	for ( var i=0, iLen=oSettings.aoServerParams.length ; i<iLen ; i++ )
+	{
+		oSettings.aoServerParams[i].fn.call( oSettings.oInstance, aoData );
+	}
+}
+
+
+/**
+ * Data the data from the server (nuking the old) and redraw the table
+ *  @param {object} oSettings dataTables settings object
+ *  @param {object} json json data return from the server.
+ *  @param {string} json.sEcho Tracking flag for DataTables to match requests
+ *  @param {int} json.iTotalRecords Number of records in the data set, not accounting for filtering
+ *  @param {int} json.iTotalDisplayRecords Number of records in the data set, accounting for filtering
+ *  @param {array} json.aaData The data to display on this page
+ *  @param {string} [json.sColumns] Column ordering (sName, comma separated)
+ *  @private
+ */
+function _fnAjaxUpdateDraw ( oSettings, json )
+{
+	if ( typeof json.sEcho != 'undefined' )
+	{
+		/* Protect against old returns over-writing a new one. Possible when you get
+		 * very fast interaction, and later queires are completed much faster
+		 */
+		if ( json.sEcho*1 < oSettings.iDraw )
+		{
+			return;
+		}
+		else
+		{
+			oSettings.iDraw = json.sEcho * 1;
+		}
+	}
+	
+	if ( !oSettings.oScroll.bInfinite ||
+		   (oSettings.oScroll.bInfinite && (oSettings.bSorted || oSettings.bFiltered)) )
+	{
+		_fnClearTable( oSettings );
+	}
+	oSettings._iRecordsTotal = parseInt(json.iTotalRecords, 10);
+	oSettings._iRecordsDisplay = parseInt(json.iTotalDisplayRecords, 10);
+	
+	/* Determine if reordering is required */
+	var sOrdering = _fnColumnOrdering(oSettings);
+	var bReOrder = (typeof json.sColumns != 'undefined' && sOrdering !== "" && json.sColumns != sOrdering );
+	var aiIndex;
+	if ( bReOrder )
+	{
+		aiIndex = _fnReOrderIndex( oSettings, json.sColumns );
+	}
+	
+	var aData = _fnGetObjectDataFn( oSettings.sAjaxDataProp )( json );
+	for ( var i=0, iLen=aData.length ; i<iLen ; i++ )
+	{
+		if ( bReOrder )
+		{
+			/* If we need to re-order, then create a new array with the correct order and add it */
+			var aDataSorted = [];
+			for ( var j=0, jLen=oSettings.aoColumns.length ; j<jLen ; j++ )
+			{
+				aDataSorted.push( aData[i][ aiIndex[j] ] );
+			}
+			_fnAddData( oSettings, aDataSorted );
+		}
+		else
+		{
+			/* No re-order required, sever got it "right" - just straight add */
+			_fnAddData( oSettings, aData[i] );
+		}
+	}
+	oSettings.aiDisplay = oSettings.aiDisplayMaster.slice();
+	
+	oSettings.bAjaxDataGet = false;
+	_fnDraw( oSettings );
+	oSettings.bAjaxDataGet = true;
+	_fnProcessingDisplay( oSettings, false );
+}
+