fix(select): don't support binding to select[multiple]

changing the type of select box from single to multiple or the other way around
at runtime is currently not supported and the two-way binding does odd stuff
when such situation happens.

we might eventually support this, but for now we are just going to not allow
binding to select[multiple] to prevent people from relying on something that
doesn't work.

BREAKING CHANGE: binding to select[multiple] directly or via ngMultiple (ng-multiple)
directive is not supported. This feature never worked with two-way data-binding,
so it's not expected that anybody actually depends on it.

Closes #3230

2 files changed, 8 insertions, 36 deletions

diff --git a/src/ng/compile.js b/src/ng/compile.js
index 46ebe71a..c059af47 100644
--- a/src/ng/compile.js
+++ b/src/ng/compile.js
@@ -1220,6 +1220,11 @@ function $CompileProvider($provide) {
       if (!interpolateFn) return;
 
 
+      if (name === "multiple" && nodeName_(node) === "SELECT") {
+        throw new $compileMinErr("selmulti", "Binding to the multiple attribute is not supported. Element: {0}",
+            startingTag(node));
+      }
+
       directives.push({
         priority: 100,
         compile: valueFn(function attrInterpolateLinkFn(scope, element, attr) {
diff --git a/src/ng/directive/booleanAttrs.js b/src/ng/directive/booleanAttrs.js
index 8f7399a6..a0966da7 100644
--- a/src/ng/directive/booleanAttrs.js
+++ b/src/ng/directive/booleanAttrs.js
@@ -201,42 +201,6 @@
 
 /**
  * @ngdoc directive
- * @name ng.directive:ngMultiple
- * @restrict A
- *
- * @description
- * The HTML specs do not require browsers to preserve the special attributes such as multiple.
- * (The presence of them means true and absence means false)
- * This prevents the angular compiler from correctly retrieving the binding expression.
- * To solve this problem, we introduce the `ngMultiple` directive.
- *
- * @example
-     <doc:example>
-       <doc:source>
-         Check me check multiple: <input type="checkbox" ng-model="checked"><br/>
-         <select id="select" ng-multiple="checked">
-           <option>Misko</option>
-           <option>Igor</option>
-           <option>Vojta</option>
-           <option>Di</option>
-         </select>
-       </doc:source>
-       <doc:scenario>
-         it('should toggle multiple', function() {
-           expect(element('.doc-example-live #select').prop('multiple')).toBeFalsy();
-           input('checked').check();
-           expect(element('.doc-example-live #select').prop('multiple')).toBeTruthy();
-         });
-       </doc:scenario>
-     </doc:example>
- *
- * @element SELECT
- * @param {expression} ngMultiple Angular expression that will be evaluated.
- */
-
-
-/**
- * @ngdoc directive
  * @name ng.directive:ngReadonly
  * @restrict A
  *
@@ -334,6 +298,9 @@ var ngAttributeAliasDirectives = {};
 
 // boolean attrs are evaluated
 forEach(BOOLEAN_ATTR, function(propName, attrName) {
+  // binding to multiple is not supported
+  if (propName == "multiple") return;
+
   var normalized = directiveNormalize('ng-' + attrName);
   ngAttributeAliasDirectives[normalized] = function() {
     return {