From 1adc87bc67620070bd6b21f8af53c398c0260edf Mon Sep 17 00:00:00 2001
From: Denys Vuika <denis.vuyka@gmail.com>
Date: Wed, 14 Sep 2016 13:54:32 +0100
Subject: [PATCH] #726 regex validators

---
 .../widgets/core/form-field-validator.ts      | 26 +++++++++++++++++++
 .../widgets/core/form-field.model.ts          |  6 +++--
 2 files changed, 30 insertions(+), 2 deletions(-)

diff --git a/ng2-components/ng2-activiti-form/src/components/widgets/core/form-field-validator.ts b/ng2-components/ng2-activiti-form/src/components/widgets/core/form-field-validator.ts
index c1b45953f7..ba4661834c 100644
--- a/ng2-components/ng2-activiti-form/src/components/widgets/core/form-field-validator.ts
+++ b/ng2-components/ng2-activiti-form/src/components/widgets/core/form-field-validator.ts
@@ -188,3 +188,29 @@ export class MaxValueFieldValidator implements FormFieldValidator {
         return true;
     }
 }
+
+export class RegExFieldValidator implements FormFieldValidator {
+
+    private supportedTypes = [
+        FormFieldTypes.TEXT,
+        FormFieldTypes.MULTILINE_TEXT
+    ];
+
+    isSupported(field: FormFieldModel): boolean {
+        return field &&
+            this.supportedTypes.indexOf(field.type) > -1 &&
+            !!field.regexPattern;
+    }
+
+    validate(field: FormFieldModel): boolean {
+        if (this.isSupported(field) && field.value) {
+            if (field.value.length > 0 && field.value.match(new RegExp('^' + field.regexPattern + '$'))) {
+                return true;
+            }
+            field.validationSummary = 'Invalid value format';
+            return false;
+        }
+        return true;
+    }
+
+}
diff --git a/ng2-components/ng2-activiti-form/src/components/widgets/core/form-field.model.ts b/ng2-components/ng2-activiti-form/src/components/widgets/core/form-field.model.ts
index 10185c7894..e50c266b9c 100644
--- a/ng2-components/ng2-activiti-form/src/components/widgets/core/form-field.model.ts
+++ b/ng2-components/ng2-activiti-form/src/components/widgets/core/form-field.model.ts
@@ -28,7 +28,8 @@ import {
     MinLengthFieldValidator,
     MaxLengthFieldValidator,
     MinValueFieldValidator,
-    MaxValueFieldValidator
+    MaxValueFieldValidator,
+    RegExFieldValidator
 } from './form-field-validator';
 
 
@@ -147,7 +148,8 @@ export class FormFieldModel extends FormWidgetModel {
             new MinLengthFieldValidator(),
             new MaxLengthFieldValidator(),
             new MinValueFieldValidator(),
-            new MaxValueFieldValidator()
+            new MaxValueFieldValidator(),
+            new RegExFieldValidator()
         ];
     }