From b88b283d4bb1708cbcf97d28af680a92cd21bc16 Mon Sep 17 00:00:00 2001
From: Martin Staffa <mjstaffa@gmail.com>
Date: Fri, 12 Jan 2018 13:30:05 +0100
Subject: [PATCH 1/3] fix(browserTrigger): support CompositionEvent

---
 src/ngMock/browserTrigger.js | 18 ++++++++++++++++++
 1 file changed, 18 insertions(+)

diff --git a/src/ngMock/browserTrigger.js b/src/ngMock/browserTrigger.js
index 196772d1e3e9..eb80e15964dc 100644
--- a/src/ngMock/browserTrigger.js
+++ b/src/ngMock/browserTrigger.js
@@ -132,6 +132,24 @@
       evnt.keyCode = eventData.keyCode;
       evnt.charCode = eventData.charCode;
       evnt.which = eventData.which;
+    } else if (/composition/.test(eventType)) {
+      try {
+        evnt = new window.CompositionEvent(eventType, {
+          data: eventData.data
+        });
+      } catch (e) {
+        // Support: IE9+
+        evnt = window.document.createEvent('CompositionEvent', {});
+        evnt.initCompositionEvent(
+          eventType,
+          eventData.bubbles,
+          eventData.cancelable,
+          window,
+          eventData.data,
+          null
+        );
+      }
+
     } else {
       evnt = window.document.createEvent('MouseEvents');
       x = x || 0;

From f31a1e27e5d38af73dd47398fdf9b78ab82669b4 Mon Sep 17 00:00:00 2001
From: Jae Ik Lee <jileeon@gmail.com>
Date: Tue, 26 Dec 2017 03:11:51 +0900
Subject: [PATCH 2/3] fix(input): fix composition mode in IE for Korean input

Fixes #6656
Closes #16273
---
 src/ng/directive/input.js | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/src/ng/directive/input.js b/src/ng/directive/input.js
index 228f5fb2366a..03e94674b816 100644
--- a/src/ng/directive/input.js
+++ b/src/ng/directive/input.js
@@ -1248,6 +1248,16 @@ function baseInputType(scope, element, attr, ctrl, $sniffer, $browser) {
       composing = true;
     });
 
+    // Support: IE9+
+    element.on('compositionupdate', function(ev) {
+      // End composition when ev.data is empty string on 'compositionupdate' event.
+      // When the input de-focusses (e.g. by clicking away), IE triggers 'compositionupdate'
+      // instead of 'compositionend'.
+      if (isUndefined(ev.data) || ev.data === '') {
+        composing = false;
+      }
+    });
+
     element.on('compositionend', function() {
       composing = false;
       listener();

From da79f73867c5dd44c85db9d386435ea6e1e2e913 Mon Sep 17 00:00:00 2001
From: Martin Staffa <mjstaffa@gmail.com>
Date: Fri, 12 Jan 2018 13:30:33 +0100
Subject: [PATCH 3/3] test(input): add test for IE composition bug

---
 test/ng/directive/inputSpec.js | 14 ++++++++++++++
 1 file changed, 14 insertions(+)

diff --git a/test/ng/directive/inputSpec.js b/test/ng/directive/inputSpec.js
index 9c58807345d3..57b91d989233 100644
--- a/test/ng/directive/inputSpec.js
+++ b/test/ng/directive/inputSpec.js
@@ -134,6 +134,20 @@ describe('input', function() {
       browserTrigger(inputElm, 'compositionend');
       expect($rootScope.name).toEqual('caitp');
     });
+
+
+    it('should end composition on "compositionupdate" when event.data is ""', function() {
+      // This tests a bug workaround for IE9-11
+      // During composition, when an input is de-focussed by clicking away from it,
+      // the compositionupdate event is called with '', followed by a change event.
+      var inputElm = helper.compileInput('<input type="text" ng-model="name" name="alias" />');
+      browserTrigger(inputElm, 'compositionstart');
+      helper.changeInputValueTo('caitp');
+      expect($rootScope.name).toBeUndefined();
+      browserTrigger(inputElm, 'compositionupdate', {data: ''});
+      browserTrigger(inputElm, 'change');
+      expect($rootScope.name).toEqual('caitp');
+    });
   });