Spinner: Update button icons when option changes. Fixes #8926 - Spinn…

…er: Can't change icons option after init

tests/unit/spinner/spinner_options.js

@@ -5,10 +5,17 @@ module( "spinner: options" );
 // culture is tested after numberFormat, since it depends on numberFormat
 
 test( "icons: default ", function() {
-	expect( 2 );
-	var element = $( "#spin" ).val( 0 ).spinner().spinner( "widget" );
-	equal( element.find( ".ui-icon:first" ).attr( "class" ), "ui-icon ui-icon-triangle-1-n" );
-	equal( element.find( ".ui-icon:last" ).attr( "class" ), "ui-icon ui-icon-triangle-1-s" );
+	expect( 4 );
+	var element = $( "#spin" ).val( 0 ).spinner();
+	equal( element.spinner( "widget" ).find( ".ui-icon:first" ).attr( "class" ), "ui-icon ui-icon-triangle-1-n" );
+	equal( element.spinner( "widget" ).find( ".ui-icon:last" ).attr( "class" ), "ui-icon ui-icon-triangle-1-s" );
+
+	element.spinner( "option", "icons", {
+		up: "ui-icon-carat-1-n",
+		down: "ui-icon-carat-1-s"
+	});
+	equal( element.spinner( "widget" ).find( ".ui-icon:first" ).attr( "class" ), "ui-icon ui-icon-carat-1-n" );
+	equal( element.spinner( "widget" ).find( ".ui-icon:last" ).attr( "class" ), "ui-icon ui-icon-carat-1-s" );
 });
 
 test( "icons: custom ", function() {

ui/jquery.ui.spinner.js

@@ -368,6 +368,14 @@ $.widget( "ui.spinner", {
 				value = this._parse( value );
 			}
 		}
+		if ( key === "icons" ) {
+			this.buttons.first().find( ".ui-icon" )
+				.removeClass( this.options.icons.up )
+				.addClass( value.up );
+			this.buttons.last().find( ".ui-icon" )
+				.removeClass( this.options.icons.down )
+				.addClass( value.down );
+		}
 
 		this._super( key, value );