Resizable: Keep user-provided handles on destroy

Closes jquerygh-1798 Ref jquerygh-1795

Author: kdinev

tests/unit/resizable/options.js

@@ -434,8 +434,10 @@ QUnit.test( "zIndex, applied to all handles", function( assert ) {
 } );
 
 QUnit.test( "setOption handles", function( assert ) {
-assert.expect( 15 );
+assert.expect( 19 );
 
+// https://bugs.jqueryui.com/ticket/3423
+// https://bugs.jqueryui.com/ticket/15084
 var target = $( "<div></div>" ).resizable(),
 target2 = $( "<div>" +
 "<div class='ui-resizable-handle ui-resizable-e'></div>" +
@@ -470,6 +472,12 @@ QUnit.test( "setOption handles", function( assert ) {
 
 target2.resizable( "option", "handles", "e, s, w" );
 checkHandles( target2, [ "e", "s", "w" ] );
+
+target.resizable( "destroy" );
+checkHandles( target, [ ] );
+
+target2.resizable( "destroy" );
+checkHandles( target2, [ "e", "w" ] );
 } );
 
 QUnit.test( "alsoResize + containment", function( assert ) {

ui/widgets/resizable.js

@@ -187,15 +187,14 @@ $.widget( "ui.resizable", $.ui.mouse, {
 _destroy: function() {
 
 this._mouseDestroy();
+this._addedHandles.remove();
 
 var wrapper,
 _destroy = function( exp ) {
 $( exp )
 .removeData( "resizable" )
 .removeData( "ui-resizable" )
-.off( ".resizable" )
-.find( ".ui-resizable-handle" )
-.remove();
+.off( ".resizable" );
 };
 
 // TODO: Unwrap at same DOM position