Android: Document form validation

docs-android/app/src/main/java/com/sismics/docs/activity/DocumentEditActivity.java

@@ -19,6 +19,8 @@ import com.sismics.docs.event.DocumentAddEvent;
 import com.sismics.docs.event.DocumentEditEvent;
 import com.sismics.docs.listener.JsonHttpResponseHandler;
 import com.sismics.docs.resource.DocumentResource;
+import com.sismics.docs.ui.form.Validator;
+import com.sismics.docs.ui.form.validator.Required;
 import com.sismics.docs.ui.view.DatePickerView;
 import com.sismics.docs.ui.view.TagsCompleteTextView;
 import com.sismics.docs.util.PreferenceUtil;
@@ -45,7 +47,12 @@ public class DocumentEditActivity extends ActionBarActivity {
     /**
      * Document edited.
      */
-    JSONObject document;
+    private JSONObject document;
+
+    /**
+     * Form validator.
+     */
+    private Validator validator;
 
     // View cache
     private EditText titleEditText;
@@ -105,7 +112,10 @@ public class DocumentEditActivity extends ActionBarActivity {
         tagsEditText.allowDuplicates(false);
         tagsEditText.setAdapter(new TagAutoCompleteAdapter(this, 0, tagList));
 
-        // TODO Form validation
+        // Validation
+        validator = new Validator(this, true);
+        validator.addValidable(titleEditText, new Required());
+
         // Fill the activity
         if (document == null) {
             datePickerView.setDate(new Date());
@@ -133,6 +143,11 @@ public class DocumentEditActivity extends ActionBarActivity {
     public boolean onOptionsItemSelected(MenuItem item) {
         switch (item.getItemId()) {
             case R.id.save:
+                validator.validate();
+                if (!validator.isValidated()) {
+                    return true;
+                }
+
                 // Metadata
                 final String title = titleEditText.getText().toString();
                 final String description = descriptionEditText.getText().toString();

docs-android/app/src/main/java/com/sismics/docs/activity/LoginActivity.java

@@ -62,10 +62,10 @@ public class LoginActivity extends ActionBarActivity {
         progressBar.setVisibility(View.VISIBLE);
         
         // Form validation
-        final Validator validator = new Validator(false);
-        validator.addValidable(this, txtServer, new Required());
-        validator.addValidable(this, txtUsername, new Required());
-        validator.addValidable(this, txtPassword, new Required());
+        final Validator validator = new Validator(this, false);
+        validator.addValidable(txtServer, new Required());
+        validator.addValidable(txtUsername, new Required());
+        validator.addValidable(txtPassword, new Required());
         validator.setOnValidationChanged(new CallbackListener() {
             @Override
             public void onComplete() {

docs-android/app/src/main/java/com/sismics/docs/ui/form/Validable.java

@@ -2,14 +2,23 @@ package com.sismics.docs.ui.form;
 
 import android.view.View;
 
+import com.sismics.docs.ui.form.validator.ValidatorType;
+
 public class Validable {
 
+    private final ValidatorType[] validatorTypes;
+
     private View view;
     
     private boolean isValidated = false;
 
+    public Validable(ValidatorType... validatorTypes) {
+        this.validatorTypes = validatorTypes;
+    }
+
     /**
      * Getter of view.
+     *
      * @return view
      */
     public View getView() {
@@ -18,6 +27,7 @@ public class Validable {
 
     /**
      * Setter of view.
+     *
      * @param view view
      */
     public void setView(View view) {
@@ -26,6 +36,7 @@ public class Validable {
 
     /**
      * Getter of isValidated.
+     *
      * @return isValidated
      */
     public boolean isValidated() {
@@ -34,9 +45,19 @@ public class Validable {
 
     /**
      * Setter of isValidated.
+     *
      * @param isValidated isValidated
      */
     public void setValidated(boolean isValidated) {
         this.isValidated = isValidated;
     }
+
+    /**
+     * Getter of validatorTypes.
+     *
+     * @return validatorTypes
+     */
+    public  ValidatorType[] getValidatorTypes() {
+        return validatorTypes;
+    }
 }

docs-android/app/src/main/java/com/sismics/docs/ui/form/Validator.java

@@ -22,7 +22,7 @@ public class Validator {
     /**
      * List of validable elements.
      */
-    private Map<View, Validable> validables = new HashMap<View, Validable>();
+    private Map<EditText, Validable> validables = new HashMap<EditText, Validable>();
     
     /**
      * Callback when the validation of one element has changed.
@@ -34,12 +34,18 @@ public class Validator {
      */
     private boolean showErrors;
 
+    /**
+     * Context.
+     */
+    private Context context;
+    
     /**
      * Constructor.
      *
      * @param showErrors True to display validation errors
      */
-    public Validator(boolean showErrors) {
+    public Validator(Context context, boolean showErrors) {
+        this.context = context;
         this.showErrors = showErrors;
     }
     
@@ -58,12 +64,11 @@ public class Validator {
      * @param editText Edit text
      * @param validatorTypes Validators
      */
-    public void addValidable(final Context context, final EditText editText, final ValidatorType...validatorTypes) {
-        final Validable validable = new Validable();
+    public void addValidable(final EditText editText, final ValidatorType... validatorTypes) {
+        final Validable validable = new Validable(validatorTypes);
         validables.put(editText, validable);
         
         editText.addTextChangedListener(new TextWatcher() {
-            
             @Override
             public void onTextChanged(CharSequence s, int start, int before, int count) {
                 // NOP
@@ -76,9 +81,31 @@ public class Validator {
             
             @Override
             public void afterTextChanged(Editable s) {
+                validate(editText, validable);
+            }
+        });
+    }
+    
+    /**
+     * Returns true if the element is validated.
+     *
+     * @param view View
+     * @return True if the element is validated
+     */
+    public boolean isValidated(View view) {
+        return validables.get(view).isValidated();
+    }
+
+    /**
+     * Validate a specific EditText.
+     *
+     * @param editText EditText
+     * @param validable Validable
+     */
+    private void validate(EditText editText, Validable validable) {
         validable.setValidated(true);
-                for (ValidatorType validatorType : validatorTypes) {
-                    if (!validatorType.validate(s.toString())) {
+        for (ValidatorType validatorType : validable.getValidatorTypes()) {
+            if (!validatorType.validate(editText.getEditableText().toString())) {
                 if (showErrors) {
                     editText.setError(validatorType.getErrorMessage(context));
                 }
@@ -95,17 +122,14 @@ public class Validator {
             onValidationChanged.onComplete();
         }
     }
-        });
-    }
 
     /**
-     * Returns true if the element is validated.
-     *
-     * @param view View
-     * @return True if the element is validated
+     * Validate everything now.
      */
-    public boolean isValidated(View view) {
-        return validables.get(view).isValidated();
+    public void validate() {
+        for (Map.Entry<EditText, Validable> entry : validables.entrySet()) {
+            validate(entry.getKey(), entry.getValue());
+        }
     }
 
     /**