added blocks for an alternative to delegation

Author: martinjuhasz

NDHTMLtoPDF.h

@@ -13,16 +13,20 @@
 
 @class NDHTMLtoPDF;
 
+typedef void (^NDHTMLtoPDFCompletionBlock)(NDHTMLtoPDF*);
+
 @protocol NDHTMLtoPDFDelegate <NSObject>
 
 @optional
 - (void)HTMLtoPDFDidSucceed:(NDHTMLtoPDF*)htmlToPDF;
 - (void)HTMLtoPDFDidFail:(NDHTMLtoPDF*)htmlToPDF;
-
 @end
 
 @interface NDHTMLtoPDF : UIViewController <UIWebViewDelegate>
 
+@property (nonatomic, copy) NDHTMLtoPDFCompletionBlock successBlock;
+@property (nonatomic, copy) NDHTMLtoPDFCompletionBlock errorBlock;
+
 @property (nonatomic, weak) id <NDHTMLtoPDFDelegate> delegate;
 
 @property (nonatomic, strong, readonly) NSString *PDFpath;
@@ -31,4 +35,7 @@
 + (id)createPDFWithHTML:(NSString*)HTML pathForPDF:(NSString*)PDFpath delegate:(id <NDHTMLtoPDFDelegate>)delegate pageSize:(CGSize)pageSize margins:(UIEdgeInsets)pageMargins;
 + (id)createPDFWithHTML:(NSString*)HTML baseURL:(NSURL*)baseURL pathForPDF:(NSString*)PDFpath delegate:(id <NDHTMLtoPDFDelegate>)delegate pageSize:(CGSize)pageSize margins:(UIEdgeInsets)pageMargins;
 
++ (id)createPDFWithURL:(NSURL*)URL pathForPDF:(NSString*)PDFpath pageSize:(CGSize)pageSize margins:(UIEdgeInsets)pageMargins successBlock:(NDHTMLtoPDFCompletionBlock)successBlock errorBlock:(NDHTMLtoPDFCompletionBlock)errorBlock;
++ (id)createPDFWithHTML:(NSString*)HTML pathForPDF:(NSString*)PDFpath pageSize:(CGSize)pageSize margins:(UIEdgeInsets)pageMargins successBlock:(NDHTMLtoPDFCompletionBlock)successBlock errorBlock:(NDHTMLtoPDFCompletionBlock)errorBlock;
++ (id)createPDFWithHTML:(NSString*)HTML baseURL:(NSURL*)baseURL pathForPDF:(NSString*)PDFpath pageSize:(CGSize)pageSize margins:(UIEdgeInsets)pageMargins successBlock:(NDHTMLtoPDFCompletionBlock)successBlock errorBlock:(NDHTMLtoPDFCompletionBlock)errorBlock;
 @end

NDHTMLtoPDF.m

@@ -71,6 +71,32 @@ + (id)createPDFWithHTML:(NSString*)HTML baseURL:(NSURL*)baseURL pathForPDF:(NSSt
 
     return creator;
 }
++ (id)createPDFWithURL:(NSURL*)URL pathForPDF:(NSString*)PDFpath pageSize:(CGSize)pageSize margins:(UIEdgeInsets)pageMargins successBlock:(NDHTMLtoPDFCompletionBlock)successBlock errorBlock:(NDHTMLtoPDFCompletionBlock)errorBlock
+{
+    NDHTMLtoPDF *creator = [[NDHTMLtoPDF alloc] initWithURL:URL delegate:nil pathForPDF:PDFpath pageSize:pageSize margins:pageMargins];
+    creator.successBlock = successBlock;
+    creator.errorBlock = errorBlock;
+    
+    return creator;
+}
+
++ (id)createPDFWithHTML:(NSString*)HTML pathForPDF:(NSString*)PDFpath pageSize:(CGSize)pageSize margins:(UIEdgeInsets)pageMargins successBlock:(NDHTMLtoPDFCompletionBlock)successBlock errorBlock:(NDHTMLtoPDFCompletionBlock)errorBlock
+{
+    NDHTMLtoPDF *creator = [[NDHTMLtoPDF alloc] initWithHTML:HTML baseURL:nil delegate:nil pathForPDF:PDFpath pageSize:pageSize margins:pageMargins];
+    creator.successBlock = successBlock;
+    creator.errorBlock = errorBlock;
+    
+    return creator;
+}
+
++ (id)createPDFWithHTML:(NSString*)HTML baseURL:(NSURL*)baseURL pathForPDF:(NSString*)PDFpath pageSize:(CGSize)pageSize margins:(UIEdgeInsets)pageMargins successBlock:(NDHTMLtoPDFCompletionBlock)successBlock errorBlock:(NDHTMLtoPDFCompletionBlock)errorBlock
+{
+    NDHTMLtoPDF *creator = [[NDHTMLtoPDF alloc] initWithHTML:HTML baseURL:baseURL delegate:nil pathForPDF:PDFpath pageSize:pageSize margins:pageMargins];
+    creator.successBlock = successBlock;
+    creator.errorBlock = errorBlock;
+    
+    return creator;
+}
 
 - (id)initWithURL:(NSURL*)URL delegate:(id <NDHTMLtoPDFDelegate>)delegate pathForPDF:(NSString*)PDFpath pageSize:(CGSize)pageSize margins:(UIEdgeInsets)pageMargins
 {
@@ -157,6 +183,10 @@ - (void)webViewDidFinishLoad:(UIWebView *)webView
     if (self.delegate && [self.delegate respondsToSelector:@selector(HTMLtoPDFDidSucceed:)])
         [self.delegate HTMLtoPDFDidSucceed:self];
 
+    if(self.successBlock) {
+        self.successBlock(self);
+    }
+    
 
 }
 
@@ -168,6 +198,10 @@ - (void)webView:(UIWebView *)webView didFailLoadWithError:(NSError *)error
 
     if (self.delegate && [self.delegate respondsToSelector:@selector(HTMLtoPDFDidFail:)])
         [self.delegate HTMLtoPDFDidFail:self];
+    
+    if(self.errorBlock) {
+        self.errorBlock(self);
+    }
 
 }