WTURLImageView delegate new methods

.gitignore

@@ -6,3 +6,15 @@ Gemfile.lock
 
 Pods
 Podfile.lock
+
+*.xcscheme
+
+WTURLImageViewDemo.xcodeproj/xcuserdata/guidosabatini.xcuserdatad/xcschemes/xcschememanagement.plist
+
+WTURLImageViewDemo.xcworkspace/xcshareddata/WTURLImageViewDemo.xccheckout
+
+WTURLImageViewDemo.xcworkspace/xcshareddata/WTURLImageViewDemo.xccheckout
+
+WTURLImageViewDemo.xcworkspace/xcuserdata/guidosabatini.xcuserdatad/xcdebugger/Breakpoints_v2.xcbkptlist
+
+WTURLImageViewDemo.xcworkspace/xcshareddata/WTURLImageViewDemo.xccheckout

WTURLImageView/WTURLImageView.h

@@ -53,6 +53,8 @@ typedef NS_OPTIONS(NSUInteger, WTURLImageViewOptions) {
 // with userInteraction is set in the view, user can receive click event
 @protocol WTURLImageViewDelegate <NSObject>
 - (void) URLImageViewDidClicked : (WTURLImageView*)imageView;
+- (void) URLImageView:(WTURLImageView*)imageView didChangeImageWithSuccess:(UIImage*)newImage;
+- (void) URLImageViewDidChangeImageWithFailure:(WTURLImageView*)imageView;
 @end
 
 

WTURLImageView/WTURLImageView.m

@@ -124,18 +124,30 @@ - (void) endLoadImage : (UIImage*) image
     {
         // no image failed
         if (failedImage) self.image = failedImage;
+        if ([_delegate respondsToSelector:@selector(URLImageViewDidChangeImageWithFailure:)])
+        {
+            [_delegate URLImageViewDidChangeImageWithFailure:self];
+        }
         return;
     }
 
     WTURLImageViewOptions effect = options & (0x0000f<<20);
     // scale image
     image = [self resizedImage:image fillType:fillType];
     if ((fromCache && !(options & WTURLImageViewOptionAnimateEvenCache)) || effect==UIViewAnimationOptionTransitionNone) {
+        if ([_delegate respondsToSelector:@selector(URLImageView:didChangeImageWithSuccess:)])
+        {
+            [_delegate URLImageView:self didChangeImageWithSuccess:image];
+        }
         self.image = image;
     }
     else {
         // show image with animation
-        [self wt_makeTransition: image effect:effect];
+        [self wt_makeTransition:image effect:effect];
+        if ([_delegate respondsToSelector:@selector(URLImageView:didChangeImageWithSuccess:)])
+        {
+            [_delegate URLImageView:self didChangeImageWithSuccess:image];
+        }
     }
 }
 

WTURLImageViewDemo/WTViewController.h

@@ -9,7 +9,7 @@
 #import <UIKit/UIKit.h>
 #import "WTURLImageView.h"
 
-@interface WTViewController : UIViewController
+@interface WTViewController : UIViewController <WTURLImageViewDelegate>
 
 @property (weak, nonatomic) IBOutlet WTURLImageView *imageView;
 
@@ -20,5 +20,6 @@
 - (IBAction)doActivityIndicator:(id)sender;
 - (IBAction)doTransition:(id)sender;
 - (IBAction)doResize:(id)sender;
+- (IBAction)doSetDelegate:(id)sender;
 
 @end

WTURLImageViewDemo/WTViewController.m

@@ -107,4 +107,22 @@ - (IBAction)doResize:(UISegmentedControl *)sender {
 
 }
 
+- (IBAction)doSetDelegate:(UISwitch*)sender {
+    self.imageView.delegate = sender.isOn ? self : nil;
+}
+
+#pragma mark - WTURLImageViewDelegate
+
+-(void)URLImageView:(WTURLImageView *)imageView didChangeImageWithSuccess:(UIImage *)newImage
+{
+    UIAlertView *alert = [[UIAlertView alloc] initWithTitle:nil message:@"Image changed with success" delegate:nil cancelButtonTitle:@"OK" otherButtonTitles:nil];
+    [alert show];
+}
+
+- (void)URLImageViewDidChangeImageWithFailure:(WTURLImageView *)imageView
+{
+    UIAlertView *alert = [[UIAlertView alloc] initWithTitle:nil message:@"Image change failed" delegate:nil cancelButtonTitle:@"OK" otherButtonTitles:nil];
+    [alert show];
+}
+
 @end