Core: Move plugin into its own module

Ref #9647

ui/core.js

@@ -28,6 +28,7 @@
 			"./keycode",
 			"./labels",
 			"./jquery-1-7",
+			"./plugin",
 			"./version"
 		], factory );
 	} else {
@@ -125,34 +126,4 @@ $.extend( $.expr[ ":" ], {
 	}
 } );
 
-// $.ui.plugin is deprecated. Use $.widget() extensions instead.
-$.ui.plugin = {
-	add: function( module, option, set ) {
-		var i,
-			proto = $.ui[ module ].prototype;
-		for ( i in set ) {
-			proto.plugins[ i ] = proto.plugins[ i ] || [];
-			proto.plugins[ i ].push( [ option, set[ i ] ] );
-		}
-	},
-	call: function( instance, name, args, allowDisconnected ) {
-		var i,
-			set = instance.plugins[ name ];
-
-		if ( !set ) {
-			return;
-		}
-
-		if ( !allowDisconnected && ( !instance.element[ 0 ].parentNode || instance.element[ 0 ].parentNode.nodeType === 11 ) ) {
-			return;
-		}
-
-		for ( i = 0; i < set.length; i++ ) {
-			if ( instance.options[ set[ i ][ 0 ] ] ) {
-				set[ i ][ 1 ].apply( instance.element, args );
-			}
-		}
-	}
-};
-
 } ) );

ui/draggable.js

@@ -23,6 +23,7 @@
 			"./core",
 			"./data",
 			"./mouse",
+			"./plugin",
 			"./version",
 			"./widget"
 		], factory );

ui/plugin.js

@@ -0,0 +1,43 @@
+( function( factory ) {
+	if ( typeof define === "function" && define.amd ) {
+
+		// AMD. Register as an anonymous module.
+		define( [ "jquery", "./version" ], factory );
+	} else {
+
+		// Browser globals
+		factory( jQuery );
+	}
+} ( function( $ ) {
+
+// $.ui.plugin is deprecated. Use $.widget() extensions instead.
+return $.ui.plugin = {
+	add: function( module, option, set ) {
+		var i,
+			proto = $.ui[ module ].prototype;
+		for ( i in set ) {
+			proto.plugins[ i ] = proto.plugins[ i ] || [];
+			proto.plugins[ i ].push( [ option, set[ i ] ] );
+		}
+	},
+	call: function( instance, name, args, allowDisconnected ) {
+		var i,
+			set = instance.plugins[ name ];
+
+		if ( !set ) {
+			return;
+		}
+
+		if ( !allowDisconnected && ( !instance.element[ 0 ].parentNode || instance.element[ 0 ].parentNode.nodeType === 11 ) ) {
+			return;
+		}
+
+		for ( i = 0; i < set.length; i++ ) {
+			if ( instance.options[ set[ i ][ 0 ] ] ) {
+				set[ i ][ 1 ].apply( instance.element, args );
+			}
+		}
+	}
+};
+
+} ) );

ui/resizable.js

@@ -22,9 +22,9 @@
 		// AMD. Register as an anonymous module.
 		define([
 			"jquery",
-			"./core",
 			"./disable-selection",
 			"./mouse",
+			"./plugin",
 			"./version",
 			"./widget"
 		], factory );