Merge pull request #28 from exalted/pdf-view-controller

Add UIDocumentInteractionController as PDF viewer.

PTShowcaseViewController/PTShowcaseViewController.m

@@ -26,7 +26,9 @@ @interface PTShowcaseView () <GMGridViewDataSource>
 
 @end
 
-@interface PTShowcaseViewController () <GMGridViewActionDelegate, PTImageAlbumViewDataSource>
+@interface PTShowcaseViewController () <GMGridViewActionDelegate,
+                                        PTImageAlbumViewDataSource,
+                                        UIDocumentInteractionControllerDelegate>
 
 - (void)dismissImageDetailViewController;
 
@@ -276,18 +278,13 @@ - (void)GMGridView:(GMGridView *)gridView didTapOnItemAtIndex:(NSInteger)positio
             }
             // <<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
 
-#warning TODO Missing implementation
-//            PSPDFDocument *document = [PSPDFDocument PDFDocumentWithURL:url];
-//            document.title = text;
-//
-//            PSPDFViewController *detailViewController = [[PSPDFViewController alloc] initWithDocument:document];
-//            detailViewController.modalTransitionStyle = UIModalTransitionStyleCrossDissolve;
-//            detailViewController.backgroundColor = self.view.backgroundColor;
-//            
-//            UINavigationController *navCtrl = [[UINavigationController alloc] initWithRootViewController:detailViewController];
-//
-//            // TODO zoom in/out (just like in Photos.app in the iPad)
-//            [self presentViewController:navCtrl animated:YES completion:NULL];
+            // Initialize Document Interaction Controller
+            UIDocumentInteractionController *documentInteractionController = [UIDocumentInteractionController interactionControllerWithURL:url];
+            documentInteractionController.name = text;
+            documentInteractionController.delegate = self;
+
+            // Preview PDF
+            [documentInteractionController presentPreviewAnimated:YES];
 
             break;
         }
@@ -341,6 +338,13 @@ - (NSString *)showcaseView:(PTShowcaseView *)showcaseView pathForItemAtIndex:(NS
     abort();
 }
 
+#pragma mark - UIDocumentInteractionControllerDelegate
+
+- (UIViewController *)documentInteractionControllerViewControllerForPreview:(UIDocumentInteractionController *)controller
+{
+    return self;
+}
+
 // <<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
 
 @end