//
//	ReaderViewController.m
//	Reader v2.6.0
//
//	Created by Julius Oklamcak on 2011-07-01.
//	Copyright © 2011-2013 Julius Oklamcak. All rights reserved.
//
//	Permission is hereby granted, free of charge, to any person obtaining a copy
//	of this software and associated documentation files (the "Software"), to deal
//	in the Software without restriction, including without limitation the rights to
//	use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies
//	of the Software, and to permit persons to whom the Software is furnished to
//	do so, subject to the following conditions:
//
//	The above copyright notice and this permission notice shall be included in all
//	copies or substantial portions of the Software.
//
//	THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
//	OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
//	FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
//	AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
//	WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
//	CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
//

#import "ReaderConstants.h"
#import "ReaderViewController.h"
#import "ThumbsViewController.h"
#import "ReaderMainToolbar.h"
#import "ReaderMainPagebar.h"
#import "ReaderContentView.h"
#import "ReaderThumbCache.h"
#import "ReaderThumbQueue.h"

#import <MessageUI/MessageUI.h>

@interface ReaderViewController () <UIScrollViewDelegate, UIGestureRecognizerDelegate, MFMailComposeViewControllerDelegate,
ReaderMainToolbarDelegate, ReaderMainPagebarDelegate, ReaderContentViewDelegate, ThumbsViewControllerDelegate>
@end

@implementation ReaderViewController
{
	ReaderDocument *document;

	UIScrollView *theScrollView;

	ReaderMainToolbar *mainToolbar;

	ReaderMainPagebar *mainPagebar;

	NSMutableDictionary *contentViews;

	UIPrintInteractionController *printInteraction;

	NSInteger currentPage;

	CGSize lastAppearSize;

	NSDate *lastHideTime;

	BOOL isVisible;
}

#pragma mark Constants

#define PAGING_VIEWS	3

#define TOOLBAR_HEIGHT	44.0f
#define PAGEBAR_HEIGHT	48.0f

#define TAP_AREA_SIZE	48.0f

#pragma mark Properties

@synthesize delegate;

#pragma mark Support methods

- (void)updateScrollViewContentSize
{
	NSInteger count = [document.pageCount integerValue];

	if (count > PAGING_VIEWS) {
		count = PAGING_VIEWS;						// Limit
	}

	CGFloat contentHeight = theScrollView.bounds.size.height;

	CGFloat contentWidth = (theScrollView.bounds.size.width * count);

	theScrollView.contentSize = CGSizeMake(contentWidth, contentHeight);
}

- (void)updateScrollViewContentViews
{
	[self updateScrollViewContentSize];							// Update the content size

	NSMutableIndexSet *pageSet = [NSMutableIndexSet indexSet];	// Page set

	[contentViews enumerateKeysAndObjectsUsingBlock:			// Enumerate content views
	^(id key, id object, BOOL *stop)
	{
		ReaderContentView *contentView = object; [pageSet addIndex:contentView.tag];
	}

	];

	__block CGRect viewRect = CGRectZero; viewRect.size = theScrollView.bounds.size;

	__block CGPoint contentOffset = CGPointZero; NSInteger page = [document.pageNumber integerValue];

	[pageSet enumerateIndexesUsingBlock:// Enumerate page number set
	^(NSUInteger number, BOOL *stop)
	{
		NSNumber *key = [NSNumber numberWithInteger:number];	// # key

		ReaderContentView *contentView = [contentViews objectForKey:key];

		contentView.frame = viewRect;

		if (page == number) {
			contentOffset = viewRect.origin;
		}

		viewRect.origin.x += viewRect.size.width;		// Next view frame position
	}

	];

	if (CGPointEqualToPoint(theScrollView.contentOffset, contentOffset) == false) {
		theScrollView.contentOffset = contentOffset;// Update content offset
	}
}

- (void)updateToolbarBookmarkIcon
{
	NSInteger page = [document.pageNumber integerValue];

	BOOL bookmarked = [document.bookmarks containsIndex:page];

	[mainToolbar setBookmarkState:bookmarked];	// Update
}

- (void)showDocumentPage:(NSInteger)page
{
	if (page != currentPage) {	// Only if different
		NSInteger	minValue; NSInteger maxValue;
		NSInteger	maxPage = [document.pageCount integerValue];
		NSInteger	minPage = 1;

		if ((page < minPage) || (page > maxPage)) {
			return;
		}

		if (maxPage <= PAGING_VIEWS) {	// Few pages
			minValue	= minPage;
			maxValue	= maxPage;
		} else {// Handle more pages
			minValue	= (page - 1);
			maxValue	= (page + 1);

			if (minValue < minPage) {
				minValue++; maxValue++;
			} else if (maxValue > maxPage) {
				minValue--; maxValue--;
			}
		}

		NSMutableIndexSet *newPageSet = [NSMutableIndexSet new];

		NSMutableDictionary *unusedViews = [contentViews mutableCopy];

		CGRect viewRect = CGRectZero; viewRect.size = theScrollView.bounds.size;

		for (NSInteger number = minValue; number <= maxValue; number++) {
			NSNumber *key = [NSNumber numberWithInteger:number];// # key

			ReaderContentView *contentView = [contentViews objectForKey:key];

			if (contentView == nil) {	// Create a brand new document content view
				NSURL *fileURL = document.fileURL; NSString *phrase = document.password;// Document properties

				contentView = [[ReaderContentView alloc] initWithFrame:viewRect fileURL:fileURL page:number password:phrase];

				[theScrollView addSubview:contentView]; [contentViews setObject:contentView forKey:key];

				contentView.message = self; [newPageSet addIndex:number];
			} else {// Reposition the existing content view
				contentView.frame = viewRect; [contentView zoomReset];

				[unusedViews removeObjectForKey:key];
			}

			viewRect.origin.x += viewRect.size.width;
		}

		[unusedViews enumerateKeysAndObjectsUsingBlock:	// Remove unused views
		^(id key, id object, BOOL *stop)
		{
			[contentViews removeObjectForKey:key];

			ReaderContentView *contentView = object;

			[contentView removeFromSuperview];
		}

		];

		unusedViews = nil;	// Release unused views

		CGFloat viewWidthX1 = viewRect.size.width;
		CGFloat viewWidthX2 = (viewWidthX1 * 2.0f);

		CGPoint contentOffset = CGPointZero;

		if (maxPage >= PAGING_VIEWS) {
			if (page == maxPage) {
				contentOffset.x = viewWidthX2;
			} else if (page != minPage) {
				contentOffset.x = viewWidthX1;
			}
		} else if (page == (PAGING_VIEWS - 1)) {
			contentOffset.x = viewWidthX1;
		}

		if (CGPointEqualToPoint(theScrollView.contentOffset, contentOffset) == false) {
			theScrollView.contentOffset = contentOffset;// Update content offset
		}

		if ([document.pageNumber integerValue] != page) {	// Only if different
			document.pageNumber = [NSNumber numberWithInteger:page];// Update page number
		}

		NSURL *fileURL = document.fileURL; NSString *phrase = document.password; NSString *guid = document.guid;

		if ([newPageSet containsIndex:page] == YES) {	// Preview visible page first
			NSNumber *key = [NSNumber numberWithInteger:page];	// # key

			ReaderContentView *targetView = [contentViews objectForKey:key];

			[targetView showPageThumb:fileURL page:page password:phrase guid:guid];

			[newPageSet removeIndex:page];	// Remove visible page from set
		}

		[newPageSet enumerateIndexesWithOptions:NSEnumerationReverse usingBlock:// Show previews
		^(NSUInteger number, BOOL *stop)
		{
			NSNumber *key = [NSNumber numberWithInteger:number];	// # key

			ReaderContentView *targetView = [contentViews objectForKey:key];

			[targetView showPageThumb:fileURL page:number password:phrase guid:guid];
		}

		];

		newPageSet = nil;					// Release new page set

		[mainPagebar updatePagebar];		// Update the pagebar display

		[self updateToolbarBookmarkIcon];	// Update bookmark

		currentPage = page;					// Track current page number
	}
}

- (void)showDocument:(id)object
{
	[self updateScrollViewContentSize];	// Set content size

	[self showDocumentPage:[document.pageNumber integerValue]];

	document.lastOpen = [NSDate date];	// Update last opened date

	isVisible = YES;					// iOS present modal bodge
}

#pragma mark UIViewController methods

- (id)initWithReaderDocument:(ReaderDocument *)object
{
	id reader = nil;// ReaderViewController object

	if ((object != nil) && ([object isKindOfClass:[ReaderDocument class]])) {
		if ((self = [super initWithNibName:nil bundle:nil])) {	// Designated initializer
			NSNotificationCenter *notificationCenter = [NSNotificationCenter defaultCenter];

			[notificationCenter addObserver:self selector:@selector(applicationWill:) name:UIApplicationWillTerminateNotification object:nil];

			[notificationCenter addObserver:self selector:@selector(applicationWill:) name:UIApplicationWillResignActiveNotification object:nil];

			[object updateProperties]; document = object;			// Retain the supplied ReaderDocument object for our use

			[ReaderThumbCache touchThumbCacheWithGUID:object.guid];	// Touch the document thumb cache directory

			reader = self;											// Return an initialized ReaderViewController object
		}
	}

	return reader;
}

- (void)viewDidLoad
{
	[super viewDidLoad];

	assert(document != nil);// Must have a valid ReaderDocument

	self.view.backgroundColor = [UIColor scrollViewTexturedBackgroundColor];

	CGRect viewRect = self.view.bounds;								// View controller's view bounds

	theScrollView = [[UIScrollView alloc] initWithFrame:viewRect];	// All

	theScrollView.scrollsToTop						= NO;
	theScrollView.pagingEnabled						= YES;
	theScrollView.delaysContentTouches				= NO;
	theScrollView.showsVerticalScrollIndicator		= NO;
	theScrollView.showsHorizontalScrollIndicator	= NO;
	theScrollView.contentMode				= UIViewContentModeRedraw;
	theScrollView.autoresizingMask			= UIViewAutoresizingFlexibleWidth | UIViewAutoresizingFlexibleHeight;
	theScrollView.backgroundColor			= [UIColor clearColor];
	theScrollView.userInteractionEnabled	= YES;
	theScrollView.autoresizesSubviews		= NO;
	theScrollView.delegate = self;

	[self.view addSubview:theScrollView];

	CGRect toolbarRect = viewRect;
	toolbarRect.size.height = TOOLBAR_HEIGHT;

	mainToolbar = [[ReaderMainToolbar alloc] initWithFrame:toolbarRect document:document];	// At top

	mainToolbar.delegate = self;

	[self.view addSubview:mainToolbar];

	CGRect pagebarRect = viewRect;
	pagebarRect.size.height = PAGEBAR_HEIGHT;
	pagebarRect.origin.y	= (viewRect.size.height - PAGEBAR_HEIGHT);

	mainPagebar = [[ReaderMainPagebar alloc] initWithFrame:pagebarRect document:document];	// At bottom

	mainPagebar.delegate = self;

	[self.view addSubview:mainPagebar];

	UITapGestureRecognizer *singleTapOne = [[UITapGestureRecognizer alloc] initWithTarget:self action:@selector(handleSingleTap:)];
	singleTapOne.numberOfTouchesRequired = 1; singleTapOne.numberOfTapsRequired = 1; singleTapOne.delegate = self;
	[self.view addGestureRecognizer:singleTapOne];

	UITapGestureRecognizer *doubleTapOne = [[UITapGestureRecognizer alloc] initWithTarget:self action:@selector(handleDoubleTap:)];
	doubleTapOne.numberOfTouchesRequired = 1; doubleTapOne.numberOfTapsRequired = 2; doubleTapOne.delegate = self;
	[self.view addGestureRecognizer:doubleTapOne];

	UITapGestureRecognizer *doubleTapTwo = [[UITapGestureRecognizer alloc] initWithTarget:self action:@selector(handleDoubleTap:)];
	doubleTapTwo.numberOfTouchesRequired = 2; doubleTapTwo.numberOfTapsRequired = 2; doubleTapTwo.delegate = self;
	[self.view addGestureRecognizer:doubleTapTwo];

	[singleTapOne requireGestureRecognizerToFail:doubleTapOne];	// Single tap requires double tap to fail

	contentViews = [NSMutableDictionary new]; lastHideTime = [NSDate date];
}

- (void)viewWillAppear:(BOOL)animated
{
	[super viewWillAppear:animated];

	if (CGSizeEqualToSize(lastAppearSize, CGSizeZero) == false) {
		if (CGSizeEqualToSize(lastAppearSize, self.view.bounds.size) == false) {
			[self updateScrollViewContentViews];// Update content views
		}

		lastAppearSize = CGSizeZero;// Reset view size tracking
	}
}

- (void)viewDidAppear:(BOOL)animated
{
	[super viewDidAppear:animated];

	if (CGSizeEqualToSize(theScrollView.contentSize, CGSizeZero)) {	// First time
		[self performSelector:@selector(showDocument:) withObject:nil afterDelay:0.02];
	}

#if (READER_DISABLE_IDLE == TRUE)	// Option
		[UIApplication sharedApplication].idleTimerDisabled = YES;
#endif	// end of READER_DISABLE_IDLE Option
}

- (void)viewWillDisappear:(BOOL)animated
{
	[super viewWillDisappear:animated];

	lastAppearSize = self.view.bounds.size;	// Track view size

#if (READER_DISABLE_IDLE == TRUE)			// Option
		[UIApplication sharedApplication].idleTimerDisabled = NO;
#endif	// end of READER_DISABLE_IDLE Option
}

- (void)viewDidDisappear:(BOOL)animated
{
	[super viewDidDisappear:animated];
}

- (void)viewDidUnload
{
#ifdef DEBUG
		NSLog(@"%s", __FUNCTION__);
#endif

	mainToolbar = nil; mainPagebar = nil;

	theScrollView = nil; contentViews = nil; lastHideTime = nil;

	lastAppearSize = CGSizeZero; currentPage = 0;

	[super viewDidUnload];
}

- (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation
{
	return YES;
}

- (void)willRotateToInterfaceOrientation:(UIInterfaceOrientation)toInterfaceOrientation duration:(NSTimeInterval)duration
{
	if (isVisible == NO) {
		return;					// iOS present modal bodge
	}

	if ([UIDevice currentDevice].userInterfaceIdiom == UIUserInterfaceIdiomPad) {
		if (printInteraction != nil) {
			[printInteraction dismissAnimated:NO];
		}
	}
}

- (void)willAnimateRotationToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation duration:(NSTimeInterval)duration
{
	if (isVisible == NO) {
		return;					// iOS present modal bodge
	}

	[self updateScrollViewContentViews];	// Update content views

	lastAppearSize = CGSizeZero;			// Reset view size tracking
}

/*
 *   - (void)didRotateFromInterfaceOrientation:(UIInterfaceOrientation)fromInterfaceOrientation
 *   {
 *    //if (isVisible == NO) return; // iOS present modal bodge
 *
 *    //if (fromInterfaceOrientation == self.interfaceOrientation) return;
 *   }
 */

- (void)didReceiveMemoryWarning
{
#ifdef DEBUG
		NSLog(@"%s", __FUNCTION__);
#endif

	[super didReceiveMemoryWarning];
}

- (void)dealloc
{
	[[NSNotificationCenter defaultCenter] removeObserver:self];
}

#pragma mark UIScrollViewDelegate methods

- (void)scrollViewDidEndDecelerating:(UIScrollView *)scrollView
{
	__block NSInteger page = 0;

	CGFloat contentOffsetX = scrollView.contentOffset.x;

	[contentViews enumerateKeysAndObjectsUsingBlock:// Enumerate content views
	^(id key, id object, BOOL *stop)
	{
		ReaderContentView *contentView = object;

		if (contentView.frame.origin.x == contentOffsetX) {
			page = contentView.tag; *stop = YES;
		}
	}

	];

	if (page != 0) {
		[self showDocumentPage:page];			// Show the page
	}
}

- (void)scrollViewDidEndScrollingAnimation:(UIScrollView *)scrollView
{
	[self showDocumentPage:theScrollView.tag];	// Show page

	theScrollView.tag = 0;						// Clear page number tag
}

#pragma mark UIGestureRecognizerDelegate methods

- (BOOL)gestureRecognizer:(UIGestureRecognizer *)recognizer shouldReceiveTouch:(UITouch *)touch
{
	if ([touch.view isKindOfClass:[UIScrollView class]]) {
		return YES;
	}

	return NO;
}

#pragma mark UIGestureRecognizer action methods

- (void)decrementPageNumber
{
	if (theScrollView.tag == 0) {	// Scroll view did end
		NSInteger	page	= [document.pageNumber integerValue];
		NSInteger	maxPage = [document.pageCount integerValue];
		NSInteger	minPage = 1;// Minimum

		if ((maxPage > minPage) && (page != minPage)) {
			CGPoint contentOffset = theScrollView.contentOffset;

			contentOffset.x -= theScrollView.bounds.size.width;	// -= 1

			[theScrollView setContentOffset:contentOffset animated:YES];

			theScrollView.tag = (page - 1);	// Decrement page number
		}
	}
}

- (void)incrementPageNumber
{
	if (theScrollView.tag == 0) {	// Scroll view did end
		NSInteger	page	= [document.pageNumber integerValue];
		NSInteger	maxPage = [document.pageCount integerValue];
		NSInteger	minPage = 1;// Minimum

		if ((maxPage > minPage) && (page != maxPage)) {
			CGPoint contentOffset = theScrollView.contentOffset;

			contentOffset.x += theScrollView.bounds.size.width;	// += 1

			[theScrollView setContentOffset:contentOffset animated:YES];

			theScrollView.tag = (page + 1);	// Increment page number
		}
	}
}

- (void)handleSingleTap:(UITapGestureRecognizer *)recognizer
{
	if (recognizer.state == UIGestureRecognizerStateRecognized) {
		CGRect viewRect = recognizer.view.bounds;	// View bounds

		CGPoint point = [recognizer locationInView:recognizer.view];

		CGRect areaRect = CGRectInset(viewRect, TAP_AREA_SIZE, 0.0f);	// Area

		if (CGRectContainsPoint(areaRect, point)) {	// Single tap is inside the area
			NSInteger page = [document.pageNumber integerValue];	// Current page #

			NSNumber *key = [NSNumber numberWithInteger:page];		// Page number key

			ReaderContentView *targetView = [contentViews objectForKey:key];

			id target = [targetView processSingleTap:recognizer];	// Target

			if (target != nil) {// Handle the returned target object
				if ([target isKindOfClass:[NSURL class]]) {	// Open a URL
					NSURL *url = (NSURL *)target;	// Cast to a NSURL object

					if (url.scheme == nil) {// Handle a missing URL scheme
						NSString *www = url.absoluteString;	// Get URL string

						if ([www hasPrefix:@"www"] == YES) {// Check for 'www' prefix
							NSString *http = [NSString stringWithFormat:@"http://%@", www];

							url = [NSURL URLWithString:http];	// Proper http-based URL
						}
					}

					if ([[UIApplication sharedApplication] openURL:url] == NO) {
#ifdef DEBUG
							NSLog(@"%s '%@'", __FUNCTION__, url);	// Bad or unknown URL
#endif
					}
				} else {// Not a URL, so check for other possible object type
					if ([target isKindOfClass:[NSNumber class]]) {	// Goto page
						NSInteger value = [target integerValue];	// Number

						[self showDocumentPage:value];				// Show the page
					}
				}
			} else {// Nothing active tapped in the target content view
				if ([lastHideTime timeIntervalSinceNow] < -0.75) {	// Delay since hide
					if ((mainToolbar.hidden == YES) || (mainPagebar.hidden == YES)) {
						[mainToolbar showToolbar]; [mainPagebar showPagebar];	// Show
					}
				}
			}

			return;
		}

		CGRect nextPageRect = viewRect;
		nextPageRect.size.width = TAP_AREA_SIZE;
		nextPageRect.origin.x	= (viewRect.size.width - TAP_AREA_SIZE);

		if (CGRectContainsPoint(nextPageRect, point)) {	// page++ area
			[self incrementPageNumber]; return;
		}

		CGRect prevPageRect = viewRect;
		prevPageRect.size.width = TAP_AREA_SIZE;

		if (CGRectContainsPoint(prevPageRect, point)) {	// page-- area
			[self decrementPageNumber]; return;
		}
	}
}

- (void)handleDoubleTap:(UITapGestureRecognizer *)recognizer
{
	if (recognizer.state == UIGestureRecognizerStateRecognized) {
		CGRect viewRect = recognizer.view.bounds;	// View bounds

		CGPoint point = [recognizer locationInView:recognizer.view];

		CGRect zoomArea = CGRectInset(viewRect, TAP_AREA_SIZE, TAP_AREA_SIZE);

		if (CGRectContainsPoint(zoomArea, point)) {	// Double tap is in the zoom area
			NSInteger page = [document.pageNumber integerValue];	// Current page #

			NSNumber *key = [NSNumber numberWithInteger:page];		// Page number key

			ReaderContentView *targetView = [contentViews objectForKey:key];

			switch (recognizer.numberOfTouchesRequired) {	// Touches count
				case 1:	// One finger double tap: zoom ++
					{
						[targetView zoomIncrement]; break;
					}

				case 2:	// Two finger double tap: zoom --
					{
						[targetView zoomDecrement]; break;
					}
			}

			return;
		}

		CGRect nextPageRect = viewRect;
		nextPageRect.size.width = TAP_AREA_SIZE;
		nextPageRect.origin.x	= (viewRect.size.width - TAP_AREA_SIZE);

		if (CGRectContainsPoint(nextPageRect, point)) {	// page++ area
			[self incrementPageNumber]; return;
		}

		CGRect prevPageRect = viewRect;
		prevPageRect.size.width = TAP_AREA_SIZE;

		if (CGRectContainsPoint(prevPageRect, point)) {	// page-- area
			[self decrementPageNumber]; return;
		}
	}
}

#pragma mark ReaderContentViewDelegate methods

- (void)contentView:(ReaderContentView *)contentView touchesBegan:(NSSet *)touches
{
	if ((mainToolbar.hidden == NO) || (mainPagebar.hidden == NO)) {
		if (touches.count == 1) {	// Single touches only
			UITouch *touch = [touches anyObject];				// Touch info

			CGPoint point = [touch locationInView:self.view];	// Touch location

			CGRect areaRect = CGRectInset(self.view.bounds, TAP_AREA_SIZE, TAP_AREA_SIZE);

			if (CGRectContainsPoint(areaRect, point) == false) {
				return;
			}
		}

		[mainToolbar hideToolbar]; [mainPagebar hidePagebar];	// Hide

		lastHideTime = [NSDate date];
	}
}

#pragma mark ReaderMainToolbarDelegate methods

- (void)tappedInToolbar:(ReaderMainToolbar *)toolbar doneButton:(UIButton *)button
{
#if (READER_STANDALONE == FALSE)		// Option
		[document saveReaderDocument];	// Save any ReaderDocument object changes

		[[ReaderThumbQueue sharedInstance] cancelOperationsWithGUID:document.guid];

		[[ReaderThumbCache sharedInstance] removeAllObjects];	// Empty the thumb cache

		if (printInteraction != nil) {
			[printInteraction dismissAnimated:NO];						// Dismiss
		}

		if ([self respondsToSelector:@selector(presentingViewController)]) {
			// Reference UIViewController.h Line:179 for update to iOS 5 difference - @RandyMcMillan

			[[self presentingViewController] dismissViewControllerAnimated:YES completion:nil];
		} else {
			[[self parentViewController] dismissModalViewControllerAnimated:YES];
		}

		// Original responder

		/*
		 *    if ([delegate respondsToSelector:@selector(dismissReaderViewController:)] == YES)
		 *    {
		 *        //		[delegate dismissReaderViewController:self]; // Dismiss the ReaderViewController
		 *        [[self presentingViewController] dismissViewControllerAnimated:YES completion:nil];
		 *
		 *    }
		 *    else // We have a "Delegate must respond to -dismissReaderViewController: error"
		 *    {
		 *        NSAssert(NO, @"Delegate must respond to -dismissReaderViewController:");
		 *    }
		 */
    
    
#endif	// end of READER_STANDALONE Option
}

- (void)tappedInToolbar:(ReaderMainToolbar *)toolbar thumbsButton:(UIButton *)button
{
	if (printInteraction != nil) {
		[printInteraction dismissAnimated:NO];							// Dismiss
	}

	ThumbsViewController *thumbsViewController = [[ThumbsViewController alloc] initWithReaderDocument:document];

	thumbsViewController.delegate = self; thumbsViewController.title = self.title;

	thumbsViewController.modalTransitionStyle	= UIModalTransitionStyleCrossDissolve;
	thumbsViewController.modalPresentationStyle = UIModalPresentationFullScreen;

	[self presentModalViewController:thumbsViewController animated:NO];
}

- (void)tappedInToolbar:(ReaderMainToolbar *)toolbar printButton:(UIButton *)button
{
#if (READER_ENABLE_PRINT == TRUE)	// Option
		Class printInteractionController = NSClassFromString(@"UIPrintInteractionController");

		if ((printInteractionController != nil) && [printInteractionController isPrintingAvailable]) {
			NSURL *fileURL = document.fileURL;	// Document file URL

			printInteraction = [printInteractionController sharedPrintController];

			if ([printInteractionController canPrintURL:fileURL] == YES) {	// Check first
				UIPrintInfo *printInfo = [NSClassFromString(@"UIPrintInfo") printInfo];

				printInfo.duplex		= UIPrintInfoDuplexLongEdge;
				printInfo.outputType	= UIPrintInfoOutputGeneral;
				printInfo.jobName		= document.fileName;

				printInteraction.printInfo		= printInfo;
				printInteraction.printingItem	= fileURL;
				printInteraction.showsPageRange = YES;

				if ([UIDevice currentDevice].userInterfaceIdiom == UIUserInterfaceIdiomPad) {
					[printInteraction presentFromRect:button.bounds inView:button animated:YES completionHandler:
					^(UIPrintInteractionController *pic, BOOL completed, NSError *error)
					{
  #ifdef DEBUG
							if ((completed == NO) && (error != nil)) {
								NSLog(@"%s %@", __FUNCTION__, error);
							}
  #endif
					}

					];
				} else {// Presume UIUserInterfaceIdiomPhone
					[printInteraction presentAnimated:YES completionHandler:
					^(UIPrintInteractionController *pic, BOOL completed, NSError *error)
					{
  #ifdef DEBUG
							if ((completed == NO) && (error != nil)) {
								NSLog(@"%s %@", __FUNCTION__, error);
							}
  #endif
					}

					];
				}
			}
		}
#endif	// end of READER_ENABLE_PRINT Option
}

- (void)tappedInToolbar:(ReaderMainToolbar *)toolbar emailButton:(UIButton *)button
{
#if (READER_ENABLE_MAIL == TRUE)// Option
		if ([MFMailComposeViewController canSendMail] == NO) {
			return;
		}

		if (printInteraction != nil) {
			[printInteraction dismissAnimated:YES];
		}

		unsigned long long fileSize = [document.fileSize unsignedLongLongValue];

		if (fileSize < (unsigned long long)15728640) {	// Check attachment size limit (15MB)
			NSURL *fileURL = document.fileURL; NSString *fileName = document.fileName;	// Document

			NSData *attachment = [NSData dataWithContentsOfURL:fileURL options:(NSDataReadingMapped | NSDataReadingUncached) error:nil];

			if (attachment != nil) {// Ensure that we have valid document file attachment data
				MFMailComposeViewController *mailComposer = [MFMailComposeViewController new];

				[mailComposer addAttachmentData:attachment mimeType:@"application/pdf" fileName:fileName];

				[mailComposer setSubject:fileName];	// Use the document file name for the subject

				mailComposer.modalTransitionStyle	= UIModalTransitionStyleCoverVertical;
				mailComposer.modalPresentationStyle = UIModalPresentationFormSheet;

				mailComposer.mailComposeDelegate = self;// Set the delegate

				[self presentModalViewController:mailComposer animated:YES];
			}
		}
#endif	// end of READER_ENABLE_MAIL Option
}

- (void)tappedInToolbar:(ReaderMainToolbar *)toolbar markButton:(UIButton *)button
{
	if (printInteraction != nil) {
		[printInteraction dismissAnimated:YES];
	}

	NSInteger page = [document.pageNumber integerValue];

	if ([document.bookmarks containsIndex:page]) {	// Remove bookmark
		[mainToolbar setBookmarkState:NO]; [document.bookmarks removeIndex:page];
	} else {// Add the bookmarked page index to the bookmarks set
		[mainToolbar setBookmarkState:YES]; [document.bookmarks addIndex:page];
	}
}

#pragma mark MFMailComposeViewControllerDelegate methods

- (void)mailComposeController:(MFMailComposeViewController *)controller didFinishWithResult:(MFMailComposeResult)result error:(NSError *)error
{
#ifdef DEBUG
		if ((result == MFMailComposeResultFailed) && (error != NULL)) {
			NSLog(@"%@", error);
		}
#endif

	[self dismissModalViewControllerAnimated:YES];	// Dismiss
}

#pragma mark ThumbsViewControllerDelegate methods

- (void)dismissThumbsViewController:(ThumbsViewController *)viewController
{
	[self updateToolbarBookmarkIcon];				// Update bookmark icon

	[self dismissModalViewControllerAnimated:NO];	// Dismiss
}

- (void)thumbsViewController:(ThumbsViewController *)viewController gotoPage:(NSInteger)page
{
	[self showDocumentPage:page];	// Show the page
}

#pragma mark ReaderMainPagebarDelegate methods

- (void)pagebar:(ReaderMainPagebar *)pagebar gotoPage:(NSInteger)page
{
	[self showDocumentPage:page];	// Show the page
}

#pragma mark UIApplication notification methods

- (void)applicationWill:(NSNotification *)notification
{
	[document saveReaderDocument];	// Save any ReaderDocument object changes

	if ([UIDevice currentDevice].userInterfaceIdiom == UIUserInterfaceIdiomPad) {
		if (printInteraction != nil) {
			[printInteraction dismissAnimated:NO];
		}
	}
}

@end