Merge pull request #4 from oliveiradev/feature/add-validation-listener

Feature/add validation listener

Author: John Cordeiro

README.md

@@ -150,6 +150,41 @@ protected void onCreate(Bundle savedInstanceState) {
 }
 ```
 
+Or you can use `toValidate()` if prefer using listener to validation response:
+
+```
+public class YourActivity extends AppCompatActivity implements Validator.ValidationListener {
+
+    ...
+
+    @Override
+    protected void onCreate(Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+
+        MainActivityBinding binding = DataBindingUtil.setContentView(this, R.layout.main_activity);
+        final Validator validator = new Validator(binding);
+        validator.setValidationListener(this);
+
+        binding.validate.setOnClickListener(new View.OnClickListener() {
+            @Override
+            public void onClick(View v) {
+                validator.toValidate()
+            }
+        });
+    }
+
+    @Override
+    public void onValidationSuccess() {
+        saveToDatabase();
+    }
+
+    @Override
+    public void onValidationError() {
+        Toast.makeText(YourActivity.this, "Dados inválidos!", Toast.LENGTH_SHORT).show();
+    }
+}
+```
+
 ### Custom Error Messages ###
 
 You can add custom error messages by using the same validation rule name and adding `Message` at the end, such as `validateTypeMessage`, `validateDateMessage`, `validateRegexMessage` and so on. For example:

library/src/main/java/br/com/ilhasoft/support/validation/Validator.java

@@ -21,6 +21,7 @@ public class Validator {
     private static final int FORM_VALIDATION_MODE = 1;
 
     private ViewDataBinding target;
+    private ValidationListener validationListener;
 
     private int mode = FIELD_VALIDATION_MODE;
     private final Set<View> disabledViews;
@@ -30,6 +31,20 @@ public Validator(ViewDataBinding target) {
         this.disabledViews = new HashSet<>();
     }
 
+    public void setValidationListener(ValidationListener validationListener) {
+        this.validationListener = validationListener;
+    }
+
+    public void toValidate() {
+        if (validationListener == null) throw new IllegalArgumentException("Validation listener should not be null.");
+
+        if (validate()) {
+            validationListener.onValidationSuccess();
+        } else {
+            validationListener.onValidationError();
+        }
+    }
+
     public boolean validate() {
         List<View> viewWithValidations = getViewsWithValidation();
         return isAllViewsValid(viewWithValidations);
@@ -96,4 +111,11 @@ private <ViewType extends View> List<View> getViewsWithValidation(List<ViewType>
     private List<View> getViewsWithValidation(View view) {
         return ViewTagHelper.filterViewWithTag(R.id.validator_rule, view);
     }
+
+    public interface ValidationListener {
+
+        void onValidationSuccess();
+
+        void onValidationError();
+    }
 }

sample/src/main/java/br/com/ilhasoft/support/validation/sample/MainActivity.java

@@ -1,9 +1,8 @@
 package br.com.ilhasoft.support.validation.sample;
 
 import android.databinding.DataBindingUtil;
-import android.databinding.ViewDataBinding;
-import android.support.v7.app.AppCompatActivity;
 import android.os.Bundle;
+import android.support.v7.app.AppCompatActivity;
 import android.util.Log;
 import android.view.View;
 import android.widget.Toast;
@@ -13,13 +12,23 @@
 import br.com.ilhasoft.support.validation.Validator;
 import br.com.ilhasoft.support.validation.sample.databinding.ActivityMainBinding;
 
-public class MainActivity extends AppCompatActivity {
+public class MainActivity extends AppCompatActivity implements Validator.ValidationListener {
 
     private static final String TAG = "MainActivity";
 
     private ActivityMainBinding binding;
     private Validator validator;
 
+    @Override
+    public void onValidationSuccess() {
+        saveToDatabase();
+    }
+
+    @Override
+    public void onValidationError() {
+        Toast.makeText(MainActivity.this, "Dados inválidos!", Toast.LENGTH_SHORT).show();
+    }
+
     @Override
     protected void onCreate(Bundle savedInstanceState) {
         super.onCreate(savedInstanceState);
@@ -28,8 +37,10 @@ protected void onCreate(Bundle savedInstanceState) {
         binding.validateName.setOnClickListener(onValidateNameClickListener);
         binding.validateMultiple.setOnClickListener(onValidateMultipleClickListener);
         binding.validate.setOnClickListener(onValidateAllClickListener);
+        binding.toValidate.setOnClickListener(onValidateAllWithListenerClickListener);
 
         validator = new Validator(binding);
+        validator.setValidationListener(this);
         validator.enableFormValidationMode();
     }
 
@@ -47,7 +58,6 @@ public void onClick(View v) {
         }
     };
 
-
     private View.OnClickListener onValidateAllClickListener = new View.OnClickListener() {
         @Override
         public void onClick(View v) {
@@ -59,6 +69,13 @@ public void onClick(View v) {
         }
     };
 
+    private View.OnClickListener onValidateAllWithListenerClickListener = new View.OnClickListener() {
+        @Override
+        public void onClick(View v) {
+            validator.toValidate();
+        }
+    };
+
     private void saveToDatabase() {
         Log.i(TAG, "Salvar os dados no banco de dados");
     }

sample/src/main/res/layout/activity_main.xml

@@ -177,6 +177,12 @@
                 android:layout_marginTop="10dp"
                 android:text="Validate All"/>
 
+            <Button
+                android:id="@+id/to_validate"
+                android:layout_width="wrap_content"
+                android:layout_height="wrap_content"
+                android:layout_marginTop="10dp"
+                android:text="Validate All With Listener"/>
         </LinearLayout>
     </ScrollView>
 </layout>