From d54a970c34697e57d98321d5ce0e19bd18b63e3d Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Zden=C4=9Bk=20Bal=C3=A1k?= <zdenek.balak@quanti.cz>
Date: Fri, 26 Jun 2020 00:47:51 +0200
Subject: [PATCH] FEAT: NullableEmailValidator

---
 formbuilderlibrary/build.gradle               |  2 +-
 .../validator/NullableEmailValidator.kt       | 20 +++++++++++++++++++
 2 files changed, 21 insertions(+), 1 deletion(-)
 create mode 100644 formbuilderlibrary/src/main/java/cz/qase/android/formbuilderlibrary/validator/NullableEmailValidator.kt

diff --git a/formbuilderlibrary/build.gradle b/formbuilderlibrary/build.gradle
index 45cf7a8..f6ab9a2 100644
--- a/formbuilderlibrary/build.gradle
+++ b/formbuilderlibrary/build.gradle
@@ -9,7 +9,7 @@ android {
         minSdkVersion 21
         targetSdkVersion 28
         versionCode 1
-        versionName "7.4"
+        versionName "7.5"
 
         testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner"
 
diff --git a/formbuilderlibrary/src/main/java/cz/qase/android/formbuilderlibrary/validator/NullableEmailValidator.kt b/formbuilderlibrary/src/main/java/cz/qase/android/formbuilderlibrary/validator/NullableEmailValidator.kt
new file mode 100644
index 0000000..9805121
--- /dev/null
+++ b/formbuilderlibrary/src/main/java/cz/qase/android/formbuilderlibrary/validator/NullableEmailValidator.kt
@@ -0,0 +1,20 @@
+package cz.qase.android.formbuilderlibrary.validator
+
+import android.util.Patterns
+import cz.qase.android.formbuilderlibrary.ValidationException
+
+/**
+ * Field validator
+ *
+ * Is ok when value is not null and not blank (aka empty or made only of whitespaces)
+ * see String.isNullOrBlank()
+ */
+class NullableEmailValidator(private val errorMsg: String) : FormValidator<String> {
+    override fun validate(value: String?) {
+        if (!value.isNullOrBlank()) {
+            if (!Patterns.EMAIL_ADDRESS.matcher(value).matches()) {
+                throw ValidationException(errorMsg)
+            }
+        }
+    }
+}