CCTextField set textfield visibility and enabled

show/hide the UITextField if it's responsible node or a related ancestor is visible/invisible

set the textfield usability along with the enabled property

Author: kalo

cocos2d-ui/CCTextField.m

@@ -165,7 +165,17 @@ - (void) onExitTransitionDidStart
 
 - (void) update:(CCTime)delta
 {
-    [self positionTextField];
+    BOOL isVisible = self.visible;
+    if (isVisible) {
+    	// run through ancestors and see if we are visible
+        for (CCNode *parent = self.parent; parent && isVisible; parent = parent.parent)
+            isVisible &= parent.visible;
+    }
+    
+    // hide the UITextField if node is invisible
+    _textField.hidden = !isVisible;
+    
+    if (isVisible) [self positionTextField];
 }
 
 - (void) layout
@@ -189,6 +199,11 @@ - (void) layout
     [super layout];
 }
 
+- (void) setEnabled:(BOOL)enabled {
+    _textField.enabled = enabled;
+    [super setEnabled:enabled];
+}
+
 #pragma mark Text Field Delegate Methods
 
 #ifdef __CC_PLATFORM_IOS