fix(CellProperty): Alert user if invalid input

Author: floryst

src/components/properties/CellProperty/InputCell/script.js

@@ -27,13 +27,16 @@ export default {
     return {
       editing: false,
       valueRep: this.value,
+      error: false,
     };
   },
   methods: {
     onChange(value) {
       this.editing = true;
 
       const isValid = Validate[this.type](value);
+      this.error = !isValid;
+
       if (!this.noEmpty && !value && !isValid) {
         this.$emit('input', undefined);
       } else if (isValid) {

src/components/properties/CellProperty/InputCell/template.html

@@ -2,6 +2,7 @@
   :label="label"
   :value="editing ? valueRep : value"
   :readonly="domain && domain.readOnly"
+  :error="error"
   @input="onChange"
   @blur="editing = false"
 />