//
//  MCOHTMLRendererIMAPDelegate.h
//  mailcore2
//
//  Created by DINH Viêt Hoà on 3/23/13.
//  Copyright (c) 2013 MailCore. All rights reserved.
//

#ifndef __MAILCORE_MCOHTMLRENDERERIMAPDELEGATE_H_

#define __MAILCORE_MCOHTMLRENDERERIMAPDELEGATE_H_

#import <MailCore/MCOHTMLRendererDelegate.h>

// This delegate protocol is used to fetch the content of the part of the message when the HTML render needs them.
// It will help fetch the minimal amount of information from the message required to render the HTML.
//
// It will be used for the following method.
//
// -[MCOIMAPMessage htmlRenderingWithFolder:delegate:]

@class MCOIMAPPart;

@protocol MCOHTMLRendererIMAPDelegate <MCOHTMLRendererDelegate>

// All methods are optional.
@optional

// The delegate method returns NULL if the delegate have not fetch the part yet. The opportunity can also be used to
// start fetching the attachment.
// It will return the data synchronously if it has already fetched it.
- (NSData *) MCOAbstractMessage:(MCOAbstractMessage *)msg dataForIMAPPart:(MCOIMAPPart *)part folder:(NSString *)folder;

// The delegate method will notify the delegate to start fetching the given part.
// It will be used to render an attachment that cannot be previewed.
- (void) MCOAbstractMessage:(MCOAbstractMessage *)msg prefetchAttachmentIMAPPart:(MCOIMAPPart *)part folder:(NSString *)folder;

// The delegate method will notify the delegate to start fetching the given part.
// It will be used to render an attachment that can be previewed.
- (void) MCOAbstractMessage:(MCOAbstractMessage *)msg prefetchImageIMAPPart:(MCOIMAPPart *)part folder:(NSString *)folder;

@end

#endif