Website templates

startbootstrap-sb-admin-2-1.0.5/bower_components/datatables-plugins/api/fngetadjacenttr.js

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+/**
+ * Due to the fact that DataTables moves DOM elements around (mainly `dt-tag tr`
+ * elements for sorting and filtering) it can at times be a little tricky to get
+ * the next row based on another, while taking into account pagination,
+ * filtering, sorting etc.
+ * 
+ * This function is designed to address exactly this situation. It takes two
+ * parameters, the target node, and a boolean indicating if the adjacent row
+ * retrieved should be the next (`true`, or no value) or the previous (`false`).
+ *
+ *  @name fnGetAdjacentTr
+ *  @summary Get the adjacent `dt-tag tr` element for a row.
+ *  @author [Allan Jardine](http://sprymedia.co.uk)
+ *
+ *  @param {node} nTr `dt-tag tr` element to get the adjacent element of
+ *  @param {boolean} [bNext=true] Get the next (`true`), or previous (`false`)
+ *    `dt-tag tr` element.
+ *  @returns {node} `dt-tag tr` element or null if not found.
+ *
+ *  @example
+ *    $(document).ready(function() {
+ *        var table = $('#example').dataTable();
+ *         
+ *        var n1 = $('#example tbody tr').eq(2)[0];
+ *        var next = table.fnGetAdjacentTr( n1 );
+ *        var prev = table.fnGetAdjacentTr( n1, false );
+ *    } );
+ */
+
+jQuery.fn.dataTableExt.oApi.fnGetAdjacentTr  = function ( oSettings, nTr, bNext )
+{
+	/* Find the node's position in the aoData store */
+	var iCurrent = oSettings.oApi._fnNodeToDataIndex( oSettings, nTr );
+
+	/* Convert that to a position in the display array */
+	var iDisplayIndex = $.inArray( iCurrent, oSettings.aiDisplay );
+	if ( iDisplayIndex == -1 )
+	{
+		/* Not in the current display */
+		return null;
+	}
+
+	/* Move along the display array as needed */
+	iDisplayIndex += (typeof bNext=='undefined' || bNext) ? 1 : -1;
+
+	/* Check that it within bounds */
+	if ( iDisplayIndex < 0 || iDisplayIndex >= oSettings.aiDisplay.length )
+	{
+		/* There is no next/previous element */
+		return null;
+	}
+
+	/* Return the target node from the aoData store */
+	return oSettings.aoData[ oSettings.aiDisplay[ iDisplayIndex ] ].nTr;
+};