Added changeImputDisabled option to not change the input value when select, move up or down a suggest.

Author: emerleite

spec/autocompleteBehavior.js

@@ -543,6 +543,46 @@ describe('Autocomplete', function () {
         expect(suggestionData).toBeNull();
     });
 
+    describe('options.changeInputDisabled is true', function() {
+       var input = $('<input />'),
+           instance,
+           suggestionData = null;
+
+       beforeEach(function() {
+           input.autocomplete({
+               lookup: [{ value: 'Jamaica', data: 'J' }, { value: 'Jamaica2', data: 'J' }, { value: 'Jamaica3', data: 'J' }],
+               changeInputDisabled: true,
+               onSelect: function (suggestion) {
+                   suggestionData = suggestion.data;
+               }
+           });
+
+           input.val('J');
+           instance = input.autocomplete();
+       });
+
+       it('Should NOT change input value when item is selected', function() {
+           instance.onValueChange();
+           instance.select(0);
+
+           expect(input.val()).toEqual('J');
+       });
+
+       it('Should NOT change input value when move down', function() {
+           instance.onValueChange();
+           instance.moveDown();
+
+           expect(input.val()).toEqual('J');
+       });
+
+       it('Should NOT change input value when move up', function() {
+           instance.onValueChange();
+           instance.moveUp();
+
+           expect(input.val()).toEqual('J');
+       });
+    });
+
     it('Should use serviceUrl and params as cacheKey', function () {
         var input = $('<input />'),
             instance,

src/jquery.autocomplete.js

@@ -77,6 +77,7 @@
                 currentRequest: null,
                 triggerSelectOnValidInput: true,
                 preventBadQueries: true,
+                changeInputDisabled: false,
                 lookupFilter: function (suggestion, originalQuery, queryLowerCase) {
                     return suggestion.value.toLowerCase().indexOf(queryLowerCase) !== -1;
                 },
@@ -750,7 +751,10 @@
                 $(that.suggestionsContainer).scrollTop(offsetTop - that.options.maxHeight + heightDelta);
             }
 
-            that.el.val(that.getValue(that.suggestions[index].value));
+            if (!that.options.changeInputDisabled) {
+              that.el.val(that.getValue(that.suggestions[index].value));
+            }
+
             that.signalHint(null);
         },
 
@@ -760,7 +764,7 @@
                 suggestion = that.suggestions[index];
 
             that.currentValue = that.getValue(suggestion.value);
-            that.el.val(that.currentValue);
+            if (!that.options.changeInputDisabled) { that.el.val(that.currentValue); }
             that.signalHint(null);
             that.suggestions = [];
             that.selection = suggestion;