From b70da53f157ee25ec6cd3a763e5b8ce3882a24ee Mon Sep 17 00:00:00 2001
From: Jiewei Qian <wacky6@users.noreply.github.com>
Date: Wed, 15 Aug 2018 13:38:37 +1000
Subject: [PATCH] DatePicker: improve form change validation (#12348)

watch.value will keep firing during time picker selection
it now detects whether panel is closed before firing el.form.change
---
 packages/date-picker/src/picker.vue | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/packages/date-picker/src/picker.vue b/packages/date-picker/src/picker.vue
index 08ec0c988..3cabcea95 100644
--- a/packages/date-picker/src/picker.vue
+++ b/packages/date-picker/src/picker.vue
@@ -429,7 +429,7 @@ export default {
       }
     },
     value(val, oldVal) {
-      if (!valueEquals(val, oldVal)) {
+      if (!valueEquals(val, oldVal) && !this.pickerVisible) {
         this.dispatch('ElFormItem', 'el.form.change', val);
       }
     }
@@ -893,6 +893,7 @@ export default {
       // determine user real change only
       if (!valueEquals(val, this.valueOnOpen)) {
         this.$emit('change', val);
+        this.dispatch('ElFormItem', 'el.form.change', val);
         this.valueOnOpen = val;
       }
     },