adding settext validations for placeholder

Adding check for delegate to avoid crashes

MVMCoreUI/Atoms/Views/MFTextView.m

@@ -20,6 +20,7 @@
 -(void) didSetFont:(UIFont *) font;
 -(void) didSetContainerInset:(UIEdgeInsets)textContainerInset;
 -(void) didSetTextColor:(UIColor *)textColor;
+-(void) didSetText:(NSString *)text;
 
 @end
 
@@ -50,6 +51,11 @@
     [self.delegateForUIChange didSetTextColor:textColor];
 }
 
+- (void)setText:(NSString *)text {
+    [super setText:text];
+    [self.delegateForUIChange didSetText:text];
+}
+
 
 
 @end
@@ -103,33 +109,61 @@
 //    self.placeHolderLabel.textColor = textColor;
 }
 
+- (void)didSetText:(NSString *)text {
+    [self showOrHidePlaceholderForTextView:self.textView];
+}
+
 #pragma Mark UITextView Delegate methods forwarding
 
 -(BOOL)textViewShouldBeginEditing:(UITextView *)textView {
-    return [self.delegate textViewShouldBeginEditing:textView];
+    if ([self.delegate respondsToSelector:@selector(textViewShouldBeginEditing:)]) {
+        return [self.delegate textViewShouldBeginEditing:textView];
+    }
+    return true;
 }
 
 -(void)textViewDidBeginEditing:(UITextView *)textView {
-    [self.delegate textViewDidBeginEditing:textView];
-    [self showOrHidePlaceholderForTextView:textView];
+       [self showOrHidePlaceholderForTextView:textView];
+    if ([self.delegate respondsToSelector:@selector(textViewDidBeginEditing:)]) {
+        [self.delegate textViewDidBeginEditing:textView];
+     
+    }
+    
 }
 
 -(BOOL)textView:(UITextView *)textView shouldChangeTextInRange:(NSRange)range replacementText:(NSString *)text {
-    return [self.delegate textView:textView shouldChangeTextInRange:range replacementText:text];
+    if ([self.delegate respondsToSelector:@selector(textView:shouldChangeTextInRange:replacementText:)]) {
+        return [self.delegate textView:textView shouldChangeTextInRange:range replacementText:text];
+
+    }
+    return true;
 }
 
 -(void)textViewDidChange:(UITextView *)textView {
-    [self.delegate textViewDidBeginEditing:textView];
     [self showOrHidePlaceholderForTextView:textView];
+    if ([self.delegate respondsToSelector:@selector(textViewDidChange:)]) {
+        [self.delegate textViewDidChange:textView];
+        
+    }
+    
 }
 
 -(BOOL)textViewShouldEndEditing:(UITextView *)textView {
-    return [self.delegate textViewShouldEndEditing:textView];
+    if ([self.delegate respondsToSelector:@selector(textViewShouldEndEditing:)]) {
+       return [self.delegate textViewShouldEndEditing:textView];
+        
+    }
+    return true;
 }
 
 -(void)textViewDidEndEditing:(UITextView *)textView {
-    [self.delegate textViewDidEndEditing:textView];
     [self showOrHidePlaceholderForTextView:textView];
+    if ([self.delegate respondsToSelector:@selector(textViewDidEndEditing:)]) {
+        [self.delegate textViewDidEndEditing:textView];
+        
+    }
+    
+    
 }
 
 - (void) showOrHidePlaceholderForTextView:(UITextView *) textView {