fix(input): re-validate when partially editing date-family inputs

Fixes angular#12207

Author: jbedard

src/ng/directive/input.js

@@ -32,6 +32,12 @@ var WEEK_REGEXP = /^(\d{4})-W(\d\d)$/;
 var MONTH_REGEXP = /^(\d{4})-(\d\d)$/;
 var TIME_REGEXP = /^(\d\d):(\d\d)(?::(\d\d)(\.\d{1,3})?)?$/;
 
+var PARTIAL_VALIDATION_EVENTS = 'keydown wheel mousedown';
+var PARTIAL_VALIDATION_TYPES = createMap();
+forEach('date,datetime-local,month,time,week'.split(','), function(type) {
+  PARTIAL_VALIDATION_TYPES[type] = true;
+});
+
 var inputType = {
 
   /**
@@ -1118,6 +1124,8 @@ function baseInputType(scope, element, attr, ctrl, $sniffer, $browser) {
     });
   }
 
+  var timeout;
+
   var listener = function(ev) {
     if (timeout) {
       $browser.defer.cancel(timeout);
@@ -1147,8 +1155,6 @@ function baseInputType(scope, element, attr, ctrl, $sniffer, $browser) {
   if ($sniffer.hasEvent('input')) {
     element.on('input', listener);
   } else {
-    var timeout;
-
     var deferListener = function(ev, input, origValue) {
       if (!timeout) {
         timeout = $browser.defer(function() {
@@ -1180,6 +1186,26 @@ function baseInputType(scope, element, attr, ctrl, $sniffer, $browser) {
   // or form autocomplete on newer browser, we need "change" event to catch it
   element.on('change', listener);
 
+  // Some native input types (date-family) have the ability to change validity without
+  // firing any input/change events.
+  // For these event types, when native validators are present and the browser supports the type,
+  // check for validity changes on various DOM events.
+  if (PARTIAL_VALIDATION_TYPES[type] && ctrl.$$hasNativeValidators && type === attr.type) {
+    element.on(PARTIAL_VALIDATION_EVENTS, function(ev) {
+      if (!timeout) {
+        var validity = this[VALIDITY_STATE_PROPERTY] || {};
+        var origBadInput = validity.badInput;
+        var origTypeMismatch = validity.typeMismatch;
+        timeout = $browser.defer(function() {
+          timeout = null;
+          if (validity.badInput !== origBadInput || validity.typeMismatch !== origTypeMismatch) {
+            listener(ev);
+          }
+        });
+      }
+    });
+  }
+
   ctrl.$render = function() {
     // Workaround for Firefox validation #12102.
     var value = ctrl.$isEmpty(ctrl.$viewValue) ? '' : ctrl.$viewValue;

test/ng/directive/inputSpec.js

@@ -1918,6 +1918,83 @@ describe('input', function() {
     });
   });
 
+  ['month', 'week', 'time', 'date', 'datetime-local'].forEach(function(inputType) {
+    if (jqLite('<input type="' + inputType + '">').attr('type') !== inputType) {
+      return;
+    }
+
+    describe(inputType, function() {
+      they('should re-validate and dirty when partially editing the input value ($prop event)',
+        ['keydown', 'wheel', 'mousedown'],
+        function(validationEvent) {
+          var mockValidity = {valid: true, badInput: false};
+          var inputElm = helper.compileInput('<input type="' + inputType + '" ng-model="val" name="alias" />', mockValidity);
+
+          expect(inputElm).toBeValid();
+          expect($rootScope.form.alias.$pristine).toBeTruthy();
+
+          inputElm.triggerHandler({type: validationEvent});
+          mockValidity.valid = false;
+          mockValidity.badInput = true;
+          $browser.defer.flush();
+          expect(inputElm).toBeInvalid();
+          expect($rootScope.form.alias.$pristine).toBeFalsy();
+        }
+      );
+
+      they('should do nothing when $prop event fired but validity does not change',
+        ['keydown', 'wheel', 'mousedown'],
+        function(validationEvent) {
+          var mockValidity = {valid: true, badInput: false};
+          var inputElm = helper.compileInput('<input type="' + inputType + '" ng-model="val" name="alias" />', mockValidity);
+
+          expect(inputElm).toBeValid();
+          expect($rootScope.form.alias.$pristine).toBeTruthy();
+
+          inputElm.triggerHandler({type: validationEvent});
+          $browser.defer.flush();
+          expect(inputElm).toBeValid();
+          expect($rootScope.form.alias.$pristine).toBeTruthy();
+        }
+      );
+
+      they('should re-validate dirty when already $invalid and partially editing the input value ($prop event)',
+        ['keydown', 'wheel', 'mousedown'],
+        function(validationEvent) {
+          var mockValidity = {valid: false, valueMissing: true, badInput: false};
+          var inputElm = helper.compileInput('<input type="' + inputType + '" required ng-model="val" name="alias" />', mockValidity);
+
+          expect(inputElm).toBeInvalid();
+          expect($rootScope.form.alias.$pristine).toBeTruthy();
+
+          inputElm.triggerHandler({type: validationEvent});
+          mockValidity.valid = false;
+          mockValidity.valueMissing = true;
+          mockValidity.badInput = true;
+          $browser.defer.flush();
+          expect(inputElm).toBeInvalid();
+          expect($rootScope.form.alias.$pristine).toBeFalsy();
+        }
+      );
+
+      they('should do nothing when already $invalid and $prop event fired but validity does not change',
+        ['keydown', 'wheel', 'mousedown'],
+        function(validationEvent) {
+          var mockValidity = {valid: false, valueMissing: true, badInput: false};
+          var inputElm = helper.compileInput('<input type="' + inputType + '" required ng-model="val" name="alias" />', mockValidity);
+
+          expect(inputElm).toBeInvalid();
+          expect($rootScope.form.alias.$pristine).toBeTruthy();
+
+          inputElm.triggerHandler({type: validationEvent});
+          $browser.defer.flush();
+          expect(inputElm).toBeInvalid();
+          expect($rootScope.form.alias.$pristine).toBeTruthy();
+        }
+      );
+    });
+  });
+
 
   describe('number', function() {