#What, why This is a simple extension over QLPreviewController allowing to display remote files.

I created it primarily because QLPreviewItem states that previewItemURL must be a file-type URL (local files only).

#Installation

$ cd your_project
$ git submodule add git@github.com:zats/watchtower.git Vendor/Watchtower
$ cd Vendor/Watchtower
$ git submodule update --init --recursive

• Add all the Watchtower folder to your project
• Add QuickLook.framework to your targets
• Optionally: if you don't use AFNetworking in your project, make sure you've added files from the Vendor/AFNetworking folder

#Usage

#import "AZAPreviewController.h"

That's it, the rest is exactly like QLPreviewController, just specify remote URL instead of local in QLPreviewItem instance.

For more details see included project.

#Notes

Class AZAPreviewItem simply provides default implementation of QLPreviewItem protocol making previewItemURL and previewItemTitle parameters writable.

If you want to be notified when remote item failed to load you have to implement AZAPreviewControllerDelegate corresponding protocol method:

- (void)AZA_previewController:(AZAPreviewController *)controller failedToLoadRemotePreviewItem:(id<QLPreviewItem>)previewItem withError:(NSError *)error
{
	NSString *alertTitle = [NSString stringWithFormat:@"Failed to load file %@", previewItem.previewItemURL];
	NSString *alertMessage = [error localizedDescription];
	[[[UIAlertView alloc] initWithTitle:alertTitle
								message:alertMessage
							   delegate:nil
					  cancelButtonTitle:@"OK"
					  otherButtonTitles:nil] show];
}

TODOs

Currently if pan gesture wasn't finished and next item didn't finish loading it might stay in loading state forever, help much appreciated