Twenty Fourteen: RTL for the slider.

props yoavf.
see #25801.

Built from https://develop.svn.wordpress.org/trunk@26606


git-svn-id: http://core.svn.wordpress.org/trunk@26496 1a063a9b-81f0-0310-95a4-ce76da25c4cd

wp-content/themes/twentyfourteen/js/slider.js

@@ -37,6 +37,7 @@
 				slider.container = $( slider.containerSelector, slider );
 				slider.count = slider.slides.length;
 				slider.prop = 'marginLeft';
+				slider.isRtl = $( 'body' ).hasClass( 'rtl' );
 				slider.args = {};
 				// TOUCH
 				slider.transitions = ( function() {
@@ -445,6 +446,12 @@
 
 		slider.getTarget = function( dir ) {
 			slider.direction = dir;
+
+			// Swap for RTL.
+			if ( slider.isRtl ) {
+				dir = 'next' === dir ? 'prev' : 'next';
+			}
+
 			if ( dir === 'next' ) {
 				return ( slider.currentSlide === slider.last ) ? 0 : slider.currentSlide + 1;
 			} else {