refactor(select, ngOptions): extract common methods; make consistent

Author: Narretz

src/ng/directive/ngOptions.js

@@ -450,12 +450,12 @@ var ngOptionsDirective = ['$compile', '$document', '$parse', function($compile,
       if (!multiple) {
 
         selectCtrl.writeValue = function writeNgOptionsValue(value) {
-          var selectedOption = options.selectValueMap[selectElement.val()];
+          var selectedOption = selectElement[0].options[selectElement[0].selectedIndex];
           var option = options.getOptionFromViewValue(value);
 
           // Make sure to remove the selected attribute from the previously selected option
           // Otherwise, screen readers might get confused
-          if (selectedOption) selectedOption.element.removeAttribute('selected');
+          if (selectedOption) selectedOption.removeAttribute('selected');
 
           if (option) {
             // Don't update the option when it is already selected.
@@ -465,23 +465,14 @@ var ngOptionsDirective = ['$compile', '$document', '$parse', function($compile,
 
             if (selectElement[0].value !== option.selectValue) {
               selectCtrl.removeUnknownOption();
-              selectCtrl.unselectEmptyOption();
 
               selectElement[0].value = option.selectValue;
               option.element.selected = true;
             }
 
             option.element.setAttribute('selected', 'selected');
           } else {
-
-            if (value == null && providedEmptyOption) {
-              selectCtrl.removeUnknownOption();
-              selectCtrl.selectEmptyOption();
-            } else if (selectCtrl.unknownOption.parent().length) {
-              selectCtrl.updateUnknownOption(value);
-            } else {
-              selectCtrl.renderUnknownOption(value);
-            }
+            selectCtrl.selectUnknownOrEmptyOption(value);
           }
         };
 

src/ng/directive/select.js

@@ -87,7 +87,7 @@ var SelectController =
 
   self.unselectEmptyOption = function() {
     if (self.hasEmptyOption) {
-      self.emptyOption.removeAttr('selected');
+      setOptionSelectedStatus(self.emptyOption, false);
     }
   };
 
@@ -129,14 +129,7 @@ var SelectController =
       var selectedOption = $element[0].options[$element[0].selectedIndex];
       setOptionSelectedStatus(jqLite(selectedOption), true);
     } else {
-      if (value == null && self.emptyOption) {
-        self.removeUnknownOption();
-        self.selectEmptyOption();
-      } else if (self.unknownOption.parent().length) {
-        self.updateUnknownOption(value);
-      } else {
-        self.renderUnknownOption(value);
-      }
+      self.selectUnknownOrEmptyOption(value);
     }
   };
 
@@ -179,6 +172,16 @@ var SelectController =
     return !!optionsMap.get(value);
   };
 
+  self.selectUnknownOrEmptyOption = function(value) {
+    if (value == null && self.emptyOption) {
+      self.removeUnknownOption();
+      self.selectEmptyOption();
+    } else if (self.unknownOption.parent().length) {
+      self.updateUnknownOption(value);
+    } else {
+      self.renderUnknownOption(value);
+    }
+  };
 
   var renderScheduled = false;
   function scheduleRender() {