Feature/success loaded event

WebImage/WebImage/WebImageView.h

@@ -9,6 +9,7 @@
 @interface WebImageView : UIImageView
 
 @property (nonatomic, copy) RCTDirectEventBlock onWebImageError;
+@property (nonatomic, copy) RCTDirectEventBlock onWebImageSuccess;
 @property (nonatomic) WebImageSource* source;
 
 @end

WebImage/WebImage/WebImageView.m

@@ -1,16 +1,36 @@
 #import "WebImageView.h"
 
-@implementation WebImageView
+@implementation WebImageView{
+    BOOL isCallback;
+}
 
 - (void)setSource:(WebImageSource *)source {
     _source = source;
+     isCallback= NO;
+
+    SDWebImageManager* manager =[[SDWebImageManager alloc] init];
+    [manager cachedImageExistsForURL:source.uri completion:^(BOOL inCache) {
+        if(!inCache || isCallback) return ;
+        if(_onWebImageSuccess){
+            _onWebImageSuccess(@{ @"uri":self->_source.uri.absoluteString, @"type" : @"cache"});
+        }
+
+        isCallback = YES;
+    }];
+
     [self sd_setImageWithURL:source.uri completed:^(UIImage *image, NSError *error, SDImageCacheType cacheType, NSURL *imageURL) {
         if (error) {
             if (_onWebImageError) {
                 _onWebImageError(@{@"error":error.description, @"uri":imageURL.absoluteString});
             }
             return;
         }
+        else{
+            if(_onWebImageSuccess && !self->isCallback){
+                self->isCallback = YES;
+                _onWebImageSuccess(@{ @"uri":imageURL.absoluteString});
+            }
+        }
     }];
 }
 

WebImage/WebImage/WebImageViewManager.m

@@ -50,5 +50,6 @@ - (UIView*)view {
 }
 
 RCT_EXPORT_VIEW_PROPERTY(onWebImageError, RCTDirectEventBlock);
+RCT_EXPORT_VIEW_PROPERTY(onWebImageSuccess, RCTDirectEventBlock);
 
 @end

android/src/main/java/org/vovkasm/WebImage/WebImageView.java

@@ -230,6 +230,15 @@ private static class WebImageViewTarget extends ViewTarget<WebImageView, Bitmap>
         @Override
         public void onResourceReady(Bitmap bitmap, GlideAnimation<? super Bitmap> glideAnimation) {
             view.setBitmap(bitmap);
+            ThemedReactContext context = view.getThemedReactContext();
+            if (context != null) {
+				WritableMap event = Arguments.createMap();
+                final Uri uri = view.getImageUri();
+                if (uri != null) {
+                    event.putString("uri", uri.toString());
+                }
+                context.getJSModule(RCTEventEmitter.class).receiveEvent(view.getId(), "onWebImageSuccess", event);
+            }
         }
 
         @Override

android/src/main/java/org/vovkasm/WebImage/WebImageViewManager.java

@@ -128,6 +128,12 @@ public Map<String, Object> getExportedCustomDirectEventTypeConstants() {
         Map<String, String> onErrorEventExport = new HashMap<>();
         onErrorEventExport.put("registrationName", "onWebImageError");
         exportedEvents.put("onWebImageError", onErrorEventExport);
+
+        // declare success event
+		Map<String, String> onSuccessEventExport = new HashMap<>();
+        onSuccessEventExport.put("registrationName", "onWebImageSuccess");
+        exportedEvents.put("onWebImageSuccess", onSuccessEventExport);
+
         return exportedEvents;
     }
 

lib/index.js

@@ -42,14 +42,23 @@ class WebImage extends React.Component {
      *   error - error message
      *   uri - URL that result this error
      */
-    onError: PropTypes.func
+    onError: PropTypes.func,
+    /**
+     * Callback called on success. With event.nativeEvent object with props:
+     *   uri - URL that result this success
+     */
+    onSuccess : PropTypes.func
   }
 
   render () {
     const { source, ...props } = this.props
     const resolvedSource = resolveAssetSource(source)
 
-    return <WebImageView {...props} source={resolvedSource} onWebImageError={this._onError} />
+    return <WebImageView {...props} source={resolvedSource} onWebImageError={this._onError} onWebImageSuccess={this._onSuccess} />
+  }
+
+  _onSuccess = (e) => {
+	this.props.onSuccess && this.props.onSuccess(e.nativeEvent)
   }
 
   _onError = (e) => {
@@ -62,7 +71,7 @@ WebImage.defaultProps = {
 }
 
 var WebImageView = requireNativeComponent('WebImageView', WebImage, {
-  nativeOnly: {onWebImageError: true}
+    nativeOnly: {onWebImageError: true, onWebImageSuccess : true}
 })
 
 export default WebImage