iOS: add event documentHandlerOnDismiss firing

README.md

@@ -26,6 +26,10 @@ There is a special failure condition on Android, if the system doesn't have any
 The plugin downloads the document and provides a preview of the document using the Quick Look framework,
 including the corresponding actions such as copy, print, etc.
 
+## Events (only iOS)
+
+* documentHandlerOnDismiss - it fires after QuickLook window is closed
+
 ## Example usage
 
     handleDocumentWithURL(
@@ -38,3 +42,11 @@ including the corresponding actions such as copy, print, etc.
       }, 
       'http://www.example.com/path/to/document.pdf'
     );
+
+    document.addEventListener(
+      'documentHandlerOnDismiss',
+      function() {
+          console.log('document handler was closed');
+      },
+      false,
+    );

src/ios/DocumentHandler.m

@@ -83,6 +83,12 @@ - (void)previewControllerWillDismiss:(QLPreviewController *)controller {
     }
 }
 
+- (void)previewControllerDidDismiss:(QLPreviewController *)controller {
+    NSLog(@"handler dismiss");
+    NSString *pluginReadyJSCallbackCommand = [NSString stringWithFormat:@"cordova.fireDocumentEvent('documentHandlerOnDismiss');"];
+    [self.commandDelegate evalJs:pluginReadyJSCallbackCommand];
+}
+
 - (id <QLPreviewItem>) previewController: (QLPreviewController *) controller previewItemAtIndex: (NSInteger) index
 {
     return self;