fix(typeahead): select match on tab for iOS webview

- Select match on blur if only it has not been selected upon keydown

fix(typeahead): move selected true logic to `select` method

Author: wesleycho

Diff for: src/typeahead/typeahead.js

@@ -71,6 +71,11 @@ angular.module('ui.bootstrap.typeahead', ['ui.bootstrap.position', 'ui.bootstrap
 
       var hasFocus;
 
+      //Used to avoid bug in iOS webview where iOS keyboard does not fire
+      //mousedown & mouseup events
+      //Issue #3699
+      var selected;
+
       //create a child scope for the typeahead directive so we are not polluting original scope
       //with typeahead-specific data (matches, query etc.)
       var scope = originalScope.$new();
@@ -255,6 +260,7 @@ angular.module('ui.bootstrap.typeahead', ['ui.bootstrap.position', 'ui.bootstrap
         var locals = {};
         var model, item;
 
+        selected = true;
         locals[parserResult.itemName] = item = scope.matches[activeIdx].model;
         model = parserResult.modelMapper(originalScope, locals);
         $setModelValue(originalScope, model);
@@ -283,7 +289,7 @@ angular.module('ui.bootstrap.typeahead', ['ui.bootstrap.position', 'ui.bootstrap
         }
 
         // if there's nothing selected (i.e. focusFirst) and enter is hit, don't do anything
-        if (scope.activeIdx == -1 && (evt.which === 13 || evt.which === 9)) {
+        if (scope.activeIdx === -1 && (evt.which === 13 || evt.which === 9)) {
           return;
         }
 
@@ -311,7 +317,14 @@ angular.module('ui.bootstrap.typeahead', ['ui.bootstrap.position', 'ui.bootstrap
       });
 
       element.bind('blur', function (evt) {
+        if (scope.matches.length && scope.activeIdx !== -1 && !selected) {
+          selected = true;
+          scope.$apply(function() {
+            scope.select(scope.activeIdx);
+          });
+        }
         hasFocus = false;
+        selected = false;
       });
 
       // Keep reference to click handler to unbind it.