PDF_Office/PDF Office/PDF Master/Class/Merge/OCPart/KMPDFEditAppendWindow.m

//
//  KMPDFEditAppendWindow.m
//  PDF Reader
//
//  Created by 丁林圭 on 2017/5/11.
//  Copyright © 2017年 zhangjie. All rights reserved.
//

#import "KMPDFEditAppendWindow.h"
#import "PasswordWindowController.h"
#import "KMFileAttribute.h"
#import <Quartz/Quartz.h>
#import "KMSavePanelAccessoryController.h"
#import "KMBatchTableRowView.h"
#import "KMBlankView.h"
#import <Masonry/Masonry.h>
#import "KMImageAccessoryController.h"
#if VERSION_DMG
#import <PDF_Master-Swift.h>
#else
#import <PDF_Master-Swift.h>
#endif
#import "CTBrowserWindowController.h"
#import "NSButton+TitleColor.h"
#import "KMPDFMergeFileNameTabelViewCell.h"
#import "PDFPage_SKExtensions.h"
#import "TextFieldFormatter.h"

@interface KMPDFEditAppendTabelViewCell()

@property (assign) IBOutlet NSTextField *pageCountLabel;
@property (assign) IBOutlet NSTextField *indexLabel;
@property (assign) IBOutlet NSTextField *fileNameLabel;
@property (assign) IBOutlet NSTextField *pageRangeLabel;
@property (assign) IBOutlet NSTextField *sizeLabel;
@property (assign) IBOutlet NSImageView *fileImage;
@property (assign) IBOutlet NSComboBox *pageRangeBox;
@property (nonatomic, copy) void(^removeCallBack)(void);


@end


@implementation KMPDFEditAppendTabelViewCell
- (void)dealloc {}

- (IBAction)buttonClicked_Remove:(id)sender {
    if (self.removeCallBack) {
        self.removeCallBack();
    }
}

- (void)awakeFromNib {
    [super awakeFromNib];
}

@end


@interface KMAppendPDFPage: PDFPage

@property (nonatomic, strong)PDFPage *drawingPage;

@end


@implementation KMAppendPDFPage

- (void)dealloc {}

//- (void)drawWithBox:(PDFDisplayBox)box {
//    [super drawWithBox:box];
//
//    CGContextRef context = (CGContextRef)[[NSGraphicsContext currentContext] graphicsPort];
//    CGSize pageSize = [self boundsForBox:kPDFDisplayBoxCropBox].size;
//    [self drawPageWithContext:context Page:self.drawingPage PageSize:pageSize];
//}

- (void)drawWithBox:(PDFDisplayBox)box toContext:(CGContextRef)context {
    [super drawWithBox:box toContext:context];
    CGSize pageSize = [self boundsForBox:kPDFDisplayBoxCropBox].size;
    [self drawPageWithContext:context Page:self.drawingPage PageSize:pageSize];
}

- (void)drawPageWithContext:(CGContextRef) context
                       Page:(PDFPage *)page
                   PageSize:(CGSize)pageSize
{
    CGSize originalSize = [page boundsForBox:kPDFDisplayBoxCropBox].size;
    
    //如果page的旋转角度为90,或者270，宽高交换
    if (page.rotation%180) {
        originalSize = CGSizeMake(originalSize.height, originalSize.width);
    }
    CGFloat wRatio = pageSize.width/originalSize.width;
    CGFloat hRatio = pageSize.height/originalSize.height;
    CGFloat ratio = MIN(wRatio, hRatio);
    
    CGContextSaveGState(context);
    CGFloat xTransform = (pageSize.width - originalSize.width * ratio)/2;
    CGFloat yTransform = (pageSize.height - originalSize.height * ratio)/2;
    CGContextTranslateCTM(context, xTransform, yTransform);
    CGContextScaleCTM(context, ratio, ratio);
    
    NSImage *image = [NSImage imageNamed:@"KMImageNameWatermark"];
    if (@available(macOS 10.12, *)) {
        [page drawWithBox:kPDFDisplayBoxCropBox toContext:context];
        
//        [image drawInRect:NSMakeRect(10, 350, 100, 30) fromRect:NSZeroRect operation:NSCompositeSourceOver fraction:1.0];
        NSData *data = [image TIFFRepresentation];
        CGImageRef imageRef;
        if (data) {
            CGImageSourceRef imageSource = CGImageSourceCreateWithData((CFDataRef)data, NULL);
            imageRef = CGImageSourceCreateImageAtIndex(imageSource, 0, NULL);
            
            CGContextDrawImage(context, CGRectMake(0, pageSize.height-32, 120, 32), imageRef);
        }
        [page transformContext:context forBox:kPDFDisplayBoxCropBox];
    } else {
        [NSGraphicsContext saveGraphicsState];
        [NSGraphicsContext setCurrentContext:[NSGraphicsContext graphicsContextWithGraphicsPort:context flipped:YES]];
        [page drawWithBox:kPDFDisplayBoxCropBox toContext:context];
        
        [NSGraphicsContext restoreGraphicsState];
        [page transformContext:context forBox:kPDFDisplayBoxCropBox];
    }
    CGContextRestoreGState(context);
}

@end

#define MyTableCellViewDataType @"MyTableCellViewDataType"
static NSString * const KMTableColumnFileNameID = @"fileName";
static NSString * const KMTableColumnPageRangeID = @"pageRangD";
static NSString * const KMTableColumnSizeID = @"size";

static KMPDFEditAppendWindow *windowController = nil;

@interface KMPDFEditAppendWindow ()<NSTableViewDataSource,NSTableViewDelegate,NSComboBoxDelegate, KMSelectPopButtonDelegate>
{
    BOOL _isSuccessfully;
    NSInteger _insertRow;
}

@property (nonatomic, assign) NSInteger insertRow;

@property (weak) IBOutlet NSBox *tableHeaderBox;
@property (weak) IBOutlet NSTextField *fileNameLabel;
@property (weak) IBOutlet NSTextField *pageRangeLabel;
@property (weak) IBOutlet NSTextField *sizeLabel;
@property (weak) IBOutlet NSBox *tableHeaderBottomLine;

@property (assign) IBOutlet NSTableView *tableView;
@property (assign) IBOutlet NSButton *removeButton;
@property (assign) IBOutlet NSButton *appendButton;
@property (assign) IBOutlet NSButton *cancelButton;
//@property (assign) IBOutlet NSButton *addFileButton;

@property (assign) IBOutlet NSBox *clearBox;
@property (assign) IBOutlet NSBox *nMergeBox;
@property (assign) IBOutlet NSBox *nCancelBox;

@property (weak) IBOutlet NSBox *addBox;
@property (nonatomic, strong) KMDesignSelect *addFileButton;

@property (assign) IBOutlet NSProgressIndicator *progress;

//宽输入框
@property (assign) IBOutlet NSTextField *pageSizeWidthTextField;
//宽高输入连接符
@property (assign) IBOutlet NSTextField *pageSizeWidthHeightConnectorTextField;
//高输入框
@property (assign) IBOutlet NSTextField *pageSizeHeightTextField;
//宽高单位
@property (assign) IBOutlet NSTextField *pageSizeUnitLabel;

@property (nonatomic,retain) NSMutableArray *files;
@property (nonatomic,retain) NSArray *addFiles;
@property (nonatomic, retain) NSMutableIndexSet *insertIndexSet;
@property (nonatomic,retain) NSString *password;
@property (nonatomic,retain) PDFDocument *PDFDocument;
@property (nonatomic,assign) KMPDFPageEditType editType;
@property (nonatomic,assign) CGFloat allFileSize;
@property (nonatomic,retain) NSMutableArray *rootPDFOutlineArray;
@property (nonatomic,assign) CGSize newPageSize;
@property (nonatomic,retain) NSMutableArray *lockFilePathArr;
@property (nonatomic,assign) NSInteger lockFileIndex;


@property (weak) IBOutlet NSView *originalSizeButton;
@property (weak) IBOutlet KMImageTitleButton *A4SizeButton;
@property (weak) IBOutlet KMImageTitleButton *A3SizeButton;
@property (weak) IBOutlet KMImageTitleButton *USLetterSizeButton;
@property (weak) IBOutlet KMImageTitleButton *USLegalButton;
@property (weak) IBOutlet KMImageTitleButton *customSizeButton;

@property (assign) IBOutlet NSBox *box;
@property (assign) IBOutlet NSTextField *boxLabel;

@property (assign) IBOutlet KMBlankView *myBlankView;
@property (weak) IBOutlet NSTextField *limitLable;


@property (nonatomic, strong) PasswordWindowController *passwordWindowController;
@property (nonatomic, strong) KMSavePanelAccessoryController *savePanelAccessoryViewController;

@property (nonatomic, assign) BOOL canMerge;

@property (nonatomic, strong) KMDesignButton *clearVC;
@property (nonatomic, strong) KMDesignButton *nMergeVC;
@property (nonatomic, strong) KMDesignButton *nCancelVC;

@property (nonatomic, strong) NSButton *loading_backgroundView;

@property (nonatomic, strong) NSAlert *alert;
@property (nonatomic, assign) BOOL limit;

@end

@implementation KMPDFEditAppendWindow

- (void)dealloc
{
    _tableView.delegate = nil;
    _tableView.dataSource = nil;
}

//没有打开文档，选择he'bing
- (id)initWithFilePaths:(NSArray *)files
{
    if (self = [super initWithWindowNibName:@"KMPDFEditAppendWindow"]) {
        
        self.PDFDocument = [[PDFDocument alloc] init];
        self.addFiles = files;
        self.editType = KMPDFPageEditMerge;
        _lockFilePathArr = [[NSMutableArray alloc] init];
        _files = [[NSMutableArray alloc] init];

    }
    return self;
}

- (id)initWithPDFDocument:(PDFDocument *)document password:(NSString *)password
{
    if (self = [super initWithWindowNibName:@"KMPDFEditAppendWindow"]) {
        
//        self.PDFDocument = document;
        self.PDFDocument = [[PDFDocument alloc] init];
        self.editType = KMPDFPageEditAppend;
        _lockFilePathArr = [[NSMutableArray alloc] init];
        _files = [[NSMutableArray alloc] init];

        KMFileAttribute *file = [[KMFileAttribute alloc] init];
        file.myPDFDocument = document;
        file.filePath = document.documentURL.path;
        file.oriFilePath = self.oriDucumentUrl.path;
        if (password && password.length > 0) {
            file.password = password;
            file.isLocked = YES;
        }
        [self.files addObject:file];
    }
    return self;
}

- (void)setOriDucumentUrl:(NSURL *)oriDucumentUrl {
    _oriDucumentUrl = oriDucumentUrl;
    
    KMFileAttribute *file = self.files.firstObject;
    file.oriFilePath = oriDucumentUrl.path;
}

- (void)windowDidLoad {
    
    [super windowDidLoad];
    
    if ([self mergeCountIsReach]) {
        NSLog(@"合并次数已达到限制. count: %ld", [self getMergeCount]);
    }
    
    self.window.contentView.wantsLayer = YES;
    self.window.appearance = [NSAppearance appearanceNamed:NSAppearanceNameAqua];
    
    self.clearVC = [[KMDesignButton alloc] initWithType: DesignButtonTypeImage];
    self.nMergeVC = [[KMDesignButton alloc] initWithType: DesignButtonTypeText];
    self.nCancelVC = [[KMDesignButton alloc] initWithType: DesignButtonTypeText];
//    self.nMergeVC.button.keyEquivalent = @"\\r";
    self.clearBox.fillColor = NSColor.clearColor;
    self.clearBox.contentView = self.clearVC.view;
    self.nMergeBox.fillColor = NSColor.clearColor;
    self.nMergeBox.contentView = self.nMergeVC.view;
    self.nCancelBox.fillColor = NSColor.clearColor;
    self.nCancelBox.contentView = self.nCancelVC.view;

    self.box.cornerRadius = 0;
    self.box.fillColor = [NSColor colorWithRed:247/255.f green:248/255.f blue:250/255.f alpha:1.f];
        
    self.window.title = NSLocalizedString(@"Merge PDF Files",nil);
    self.pageSizeWidthTextField.enabled = NO;
    self.pageSizeHeightTextField.enabled = NO;
    self.pageSizeWidthTextField.stringValue = @"595";
    self.pageSizeHeightTextField.stringValue = @"841";
    self.pageSizeWidthTextField.formatter = [[TextFieldFormatter alloc] init];
    self.pageSizeHeightTextField.formatter = [[TextFieldFormatter alloc] init];
    
    NSArray *titles = @[NSLocalizedString(@"Original Size", nil),@"A4",@"A3",
                        NSLocalizedString(@"U.S.Letter", nil),NSLocalizedString(@"U.S.Legal", nil),NSLocalizedString(@"Custom", nil)];

    __weak typeof(self) weakSelf = self;
    int i = 0;
    for (KMImageTitleButton *button in @[self.originalSizeButton, self.A4SizeButton, self.A3SizeButton,
                                         self.USLetterSizeButton, self.USLegalButton, self.customSizeButton]) {
        KMImageTitleButton *radio = [[KMImageTitleButton alloc] init];
        [button addSubview:radio];
        radio.frame = button.bounds;
        radio.autoresizingMask = NSViewWidthSizable | NSViewHeightSizable;
        radio.titleLabel.textColor = [NSColor colorWithRed:223/255.f green:225/255.f blue:229/255.f alpha:1.f];
        radio.title = titles[i];
        if (i == 0) {
            radio.state = NSControlStateValueOn;
            radio.imageName = @"btn_radio_sel_on";
        } else {
            radio.state = NSControlStateValueOff;
            radio.imageName = @"btn_radio_unsel_on";
        }
        
        radio.titleLabel.textColor = [NSColor colorWithRed:223/255.f green:225/255.f blue:229/255.f alpha:1.f];
        radio.titleLabel.font = [NSFont fontWithName:@"SFProText-Regular" size:14];
        radio.action = ^(KMImageTitleButton *view, NSButton *button) {
            [weakSelf buttonClicked_ChooseSize:view];
        };
        radio.contentButton.tag = i;
        i += 1;
    }
    
    self.nCancelVC.target = self;
    self.nCancelVC.action = @selector(buttonItemClicked_Cancel:);
    self.nCancelVC.stringValue = NSLocalizedString(@"Cancel", nil);
    [self.nCancelVC buttonWithType:TokenButtonTypeSec size:TokenButtonSizeM height:[[NSLayoutConstraint alloc] init]];
    
    _removeButton.title = NSLocalizedString(@"Remove", nil);
    self.clearVC.target = self;
    self.clearVC.action = @selector(buttonItemClicked_Clear:);
    self.clearVC.image = [NSImage imageNamed:@"icon_btn_clear_false_norm"];
    self.clearVC.image_hov = [NSImage imageNamed:@"icon_btn_clear_false_hov"];
    self.clearVC.image_act = [NSImage imageNamed:@"icon_btn_clear_false_act"];
    self.clearVC.image_disabled = [NSImage imageNamed:@"icon_btn_clear_Disabled_norm"];
    [self.clearVC buttonWithType:TokenButtonTypeSec_Icon size:TokenButtonSizeM height:[[NSLayoutConstraint alloc] init]];
    
    [_addFileButton setTitle:NSLocalizedString(@"Add Files", nil)];
    
    self.nMergeVC.target = self;
    self.nMergeVC.action = @selector(buttonItemClicked_Append:);
    self.nMergeVC.stringValue = NSLocalizedString(@"Merge", nil);
    [self.nMergeVC buttonWithType:TokenButtonTypeCta size:TokenButtonSizeM height:[[NSLayoutConstraint alloc] init]];

    self.tableView.delegate = self;
    self.tableView.dataSource = self;
    self.tableView.allowsMultipleSelection = YES;
    [_tableView registerForDraggedTypes:[NSArray arrayWithObjects:NSFilenamesPboardType, NSPasteboardTypeString, NSPasteboardTypePDF, MyTableCellViewDataType, nil]];
    
    NSArray *tableHeaderTitles = @[NSLocalizedString(@"File Name", nil),NSLocalizedString(@"Page Range", nil),NSLocalizedString(@"Size", nil)];
    i = 0;
    for (NSTextField *label in @[self.fileNameLabel, self.pageRangeLabel, self.sizeLabel]) {
        label.stringValue = tableHeaderTitles[i];
        label.textColor = [NSColor colorWithRed:97/255.f green:100/255.f blue:105/255.f alpha:1.f];
        label.font = [NSFont fontWithName:@"SFProText-Regular" size:12];
        i += 1;
    }
    self.tableHeaderBottomLine.fillColor = [NSColor colorWithRed:223/255.f green:225/255.f blue:229/255.f alpha:1.f];
    [self.tableView removeTableColumn:self.tableView.tableColumns.firstObject];
    NSTableColumn *column1 = [[NSTableColumn alloc] initWithIdentifier:KMTableColumnFileNameID];
    column1.width = 446+16;
    column1.title = NSLocalizedString(@"File Name", nil);
    [self.tableView addTableColumn:column1];
    NSTableColumn *column2 = [[NSTableColumn alloc] initWithIdentifier:KMTableColumnPageRangeID];
    column2.width = 160+8;
    column2.title = NSLocalizedString(@"Page Range", nil);
    [self.tableView addTableColumn:column2];
    NSTableColumn *column3 = [[NSTableColumn alloc] initWithIdentifier:KMTableColumnSizeID];
    column3.width = 139+12;
    column3.title = NSLocalizedString(@"Size", nil);
    [self.tableView addTableColumn:column3];
    self.tableView.rowHeight = 76;
    
    _insertIndexSet = [[NSMutableIndexSet alloc] init];
    
    [self addFiles:_addFiles];
    
    [_progress setHidden:YES];
    
    [self.tableView addSubview:self.myBlankView];
    [self.myBlankView mas_makeConstraints:^(MASConstraintMaker *make) {
        make.left.top.width.equalTo(self.tableView);
        make.height.equalTo(self.tableView).offset(0);
    }];
    self.myBlankView.wantsLayer = YES;
    self.myBlankView.layer.backgroundColor = [NSColor clearColor].CGColor;
    self.myBlankView.titleLabel.stringValue = NSLocalizedString(@"Select Files", nil);
    self.myBlankView.titleLabel.textColor = [NSColor colorWithRed:97/255.f green:100/255.f blue:105/255.f alpha:1];
    self.myBlankView.titleLabel.font = [NSFont fontWithName:@"SFProText-Regular" size:14];
    
    self.myBlankView.secondTitleLabel.stringValue = NSLocalizedString(@"Drop files here or Click “+”. Drag files to reorder as you need. You can also add files or folders via the lower left button.", nil);
    self.myBlankView.secondTitleLabel.textColor = [NSColor colorWithRed:148/255.f green:152/255.f blue:156/255.f alpha:1];
    self.myBlankView.secondTitleLabel.font = [NSFont fontWithName:@"SFProText-Regular" size:12];
    
    self.myBlankView.imageView.image = [NSImage imageNamed:@"KMImageNameEmptyAddNormal"];
    self.myBlankView.allowedFileTypes = [KMImageAccessoryController supportedImageTypes];
    self.myBlankView.mouseActionCallBack = ^(KMBlankViewMouseEventType mouseType) {
        if (mouseType == KMBlankViewMouseEventType_MouseEnter) {
            weakSelf.myBlankView.imageView.image = [NSImage imageNamed:@"KMImageNameEmptyAddHover"];
        } else if (mouseType == KMBlankViewMouseEventType_MouseExit) {
            weakSelf.myBlankView.imageView.image = [NSImage imageNamed:@"KMImageNameEmptyAddNormal"];
        } else if (mouseType == KMBlankViewMouseEventType_MouseDown) {
            weakSelf.myBlankView.imageView.image = [NSImage imageNamed:@"KMImageNameEmptyAddHover"];
            [weakSelf itemAddFileAction];
        } else if (mouseType == KMBlankViewMouseEventType_MouseUp) {
            weakSelf.myBlankView.imageView.image = [NSImage imageNamed:@"KMImageNameEmptyAddHover"];
        }
    };
    self.myBlankView.dragSuccessBlock = ^(NSMutableArray *fileNames) {
        NSMutableArray *array = [NSMutableArray array];
        
        for(NSString *path in fileNames){
            if (![weakSelf isExistAtFilepath:path]) {
                continue;
            }

            NSDictionary *attrib = [[NSFileManager defaultManager] attributesOfItemAtPath:path error:nil];
            CGFloat fileSize = [[attrib objectForKey:NSFileSize] floatValue];
            
            weakSelf.allFileSize =  weakSelf.allFileSize + fileSize;
//            weakSelf.allFileSize = weakSelf.allFileSize - fileSize;
            [array addObject:path];
        }
        [weakSelf addFiles:array];
    };
    
    [self updateButtonState];
    
    id outputBookMarkObject = [[NSUserDefaults standardUserDefaults] objectForKey:@"kmAppendOutputPath"];
    if ([outputBookMarkObject isKindOfClass:[NSData class]]) {
        NSData* outputBookMarkData = (NSData*)outputBookMarkObject;
        NSURL *bookmarkedURL = [NSURL URLByResolvingBookmarkData:outputBookMarkData options:NSURLBookmarkResolutionWithSecurityScope relativeToURL:nil bookmarkDataIsStale:nil error:nil];
        [bookmarkedURL startAccessingSecurityScopedResource];
        if (bookmarkedURL) {
//            _outputText.stringValue = [bookmarkedURL path];
        }
    }
    
    self.boxLabel.stringValue = NSLocalizedString(@"Page size:", nil);
    self.boxLabel.textColor = [NSColor colorWithRed:37/255.f green:38/255.f blue:41/255.f alpha:1.f];
    self.boxLabel.font = [NSFont fontWithName:@"SFProText-Regular" size:16];
    
    self.addFileButton = [[KMDesignSelect alloc] initWithType:1];
    self.addBox.fillColor = [NSColor clearColor];
    self.addBox.contentView = self.addFileButton.view;
    
    [self.addFileButton removeAllItems];
    [self.addFileButton addItemsWithObjectValues:@[NSLocalizedString(@"Add Files", ""),NSLocalizedString(@"Add Folder", ""),NSLocalizedString(@"Add Open Files", "")]];
    [self.addFileButton selectItemAt:0];
    self.addFileButton.editable = false; //默认属性，初始化可不设置
    self.addFileButton.delete = self;
    [self.addFileButton updateUI];
    
    self.loading_backgroundView = [[NSButton alloc] init];
    [self.window.contentView addSubview:self.loading_backgroundView];
    self.loading_backgroundView.frame = self.window.contentView.bounds;
    self.loading_backgroundView.autoresizingMask = NSViewWidthSizable | NSViewHeightSizable;
    self.loading_backgroundView.title = @"";
    self.loading_backgroundView.bordered = NO;
    self.loading_backgroundView.wantsLayer = YES;
    self.loading_backgroundView.layer.backgroundColor = [NSColor clearColor].CGColor;
    self.loading_backgroundView.hidden = YES;
    
    self.limitLable.stringValue = NSLocalizedString(@"Merge 2 files at a time", "");
    self.limitLable.font = [NSFont SFProTextRegular:12];
    self.limitLable.textColor = [[NSColor alloc] initWithHex:@"#F3465B" alpha:1];
    
    self.limit = NO;
    
    BOOL result = [KMLightMemberManager.manager canPayFunction];
    self.limit = !result;
    if (result) {
        self.limitLable.hidden = YES;
    } else {
        self.limitLable.hidden = NO;
    }
    
//    
//    [KMLightMemberManager.manager canPayFunctionWithNeedNetworking:NO completionHandler:^(BOOL result) {
//        weakSelf.limit = !result;
//        
//        dispatch_sync(dispatch_get_main_queue(), ^{
//            if (result) {
//                weakSelf.limitLable.hidden = YES;
//            } else {
//                weakSelf.limitLable.hidden = NO;
//            }
//        });
//    }];
}

- (void)updateButtonState
{
    if (_files.count > 0) {
        self.myBlankView.hidden = YES;
        self.tableHeaderBox.hidden = NO;
        [_removeButton setEnabled:YES];
        [self.clearVC setEnabled:YES];
 
        if (self.files.count > 1) {
            [self.nMergeVC setEnabled:YES];
            self.canMerge = YES;
        } else {
            self.canMerge = NO;
            [self.nMergeVC setEnabled:NO];
        }
    } else {
        self.myBlankView.hidden = NO;
        self.tableHeaderBox.hidden = YES;
        [_removeButton setEnabled:NO];
        [self.clearVC setEnabled:NO];
        self.canMerge = NO;
        [self.nMergeVC setEnabled:NO];
    }
}

#pragma mark -NSTextFieldDelegate

- (void)controlTextDidChange:(NSNotification *)obj
{
    NSTextField *textField = (NSTextField*)[obj object];
    NSInteger index = textField.tag;
    [[_files objectAtIndex:index] setPagesString:textField.stringValue];
}


#pragma mark Show Methods

- (void)didEndSheet:(NSWindow *)sheet returnCode:(NSInteger)returnCode contextInfo:(void *)contextInfo {
    if (contextInfo != NULL) {
        void (^handler)(BOOL isSuccessfully ,NSIndexSet * selectedIndexSet) = CFBridgingRelease(contextInfo);
        handler(_isSuccessfully,self.insertIndexSet);
    }
    windowController = nil;
}

- (void)beginSheetModalForWindow:(NSWindow *)window completionHandler:(void (^)(BOOL isSuccessfully,NSIndexSet * selectedIndexSet))handler
{
    if (windowController.window.isSheet) {
#if DEBUG
        NSLog(@"合并窗口已显示");
#endif
        return;
    }
    windowController = self;
    
    [NSApp beginSheet:[self window]
       modalForWindow:window
        modalDelegate:self
       didEndSelector:@selector(didEndSheet:returnCode:contextInfo:)
          contextInfo:handler ? CFBridgingRetain(handler) : NULL];
}

#pragma mark Private methor
- (void)viewFileAtFinder:(NSString *)filePath
{
    NSWorkspace *workspace = [NSWorkspace sharedWorkspace];
    NSURL *url = [NSURL fileURLWithPath:filePath];
    [workspace activateFileViewerSelectingURLs:[NSArray arrayWithObject:url]];
}

- (void)addFiles:(NSArray*)files
{
    [_lockFilePathArr removeAllObjects];
    _lockFileIndex = 0;

    for (NSString *filePath in files) {
        if ([filePath.pathExtension.lowercaseString isEqualToString:@"pdf"]) {
            KMFileAttribute *file = [[KMFileAttribute alloc] init];
            file.filePath = filePath;
            PDFDocument *document = [[PDFDocument alloc] initWithURL:[NSURL fileURLWithPath:filePath]];
            
            NSDictionary *attrib = [[NSFileManager defaultManager] attributesOfItemAtPath:filePath error:nil];
            self.allFileSize = [[attrib objectForKey:NSFileSize] floatValue];
            
            if ([document isLocked]) {
                [_lockFilePathArr addObject:filePath];
            } else if ([KMTools hasPermissionsLimit:document]) {
                [_lockFilePathArr addObject:filePath];
            } else {
                if ([NSDocument isDamageWithUrl:[NSURL fileURLWithPath:filePath]]) {
                    NSAlert *alert = [[NSAlert alloc] init];
                    alert.messageText = NSLocalizedString(@"The file was not added successfully, please select the file again.", @"");
                    [alert runModal];
                } else {
                    [_files addObject:file];
                }
            }
        } else {
            KMFileAttribute *file = [[KMFileAttribute alloc] init];
            file.filePath = filePath;
            PDFDocument *document = [[PDFDocument alloc] init];
            NSImage *image = [[NSImage alloc] initWithContentsOfFile:filePath];
            if (image == nil) {
                continue;
            }
//            [document insertPage:image.size withImage:filePath atIndex:0];
            [document insertPage:[[PDFPage alloc] initWithImage:image] atIndex:0];
            file.myPDFDocument = document;
            
            NSDictionary *attrib = [[NSFileManager defaultManager] attributesOfItemAtPath:filePath error:nil];
            self.allFileSize = [[attrib objectForKey:NSFileSize] floatValue];
            
            if ([NSDocument isDamageWithUrl:[NSURL fileURLWithPath:filePath]]) {
                NSAlert *alert = [[NSAlert alloc] init];
                alert.messageText = NSLocalizedString(@"The file was not added successfully, please select the file again.", @"");
                [alert runModal];
            } else {
                [_files addObject:file];
            }
        }
    }
    
    [self updateButtonState];
    [_tableView reloadData];
    
    if ([_lockFilePathArr count]) {
        dispatch_after(dispatch_time(DISPATCH_TIME_NOW, (int64_t)(0.5 * NSEC_PER_SEC)), dispatch_get_main_queue(), ^{
            if (self.files.count == 0) {
                self.insertRow = 0;
            } else {
                self.insertRow = self.files.count;
            }
            [self openPasswordWindow];
        });
    }
}

- (BOOL)isExistAtFilepath:(NSString *)filePath
{
    NSMutableArray *array = [NSMutableArray array];
    for (KMFileAttribute *file in self.files) {
        [array addObject:file.filePath];
    }
    if ([array containsObject:filePath]) {
        return NO;
    }
    return YES;
}

-(void)openPasswordWindow
{
    if ([_lockFilePathArr count] > _lockFileIndex) {
        NSString *filePath = [_lockFilePathArr objectAtIndex:_lockFileIndex];
        __weak typeof(self) weakSelf = self;
        [KMPasswordInputWindow openWindowWithWindow:self.window type:KMPasswordInputWindowTypeOwner url:[NSURL fileURLWithPath:filePath] callback:^(enum KMPasswordInputWindowResult result, NSString * _Nullable password) {
            if (password.length > 0) {
                KMFileAttribute *file = [[KMFileAttribute alloc] init];
                file.filePath = filePath;
                file.isLocked = YES;
                file.password = password;
                [weakSelf.files insertObject:file atIndex:weakSelf.insertRow];
                weakSelf.insertRow ++;
            }
            
            weakSelf.lockFileIndex++;
//            if ([self.lockFilePathArr count] > self.lockFileIndex) {
                dispatch_after(dispatch_time(DISPATCH_TIME_NOW, (int64_t)(0.5 * NSEC_PER_SEC)), dispatch_get_main_queue(), ^{
                    [weakSelf openPasswordWindow];
                });
//            } else {
                [weakSelf.tableView reloadData];
                [weakSelf updateButtonState];
//            }
        }];
    }
}

- (void)comboBoxAction:(NSInteger)itemIndex atRow:(NSInteger)row
{
    NSInteger index = row;
    // 数组不存在，或者索引超出数组长度
    if ((!_files) || (index > ((NSInteger)[_files count] - 1))) {
        return;
    }
    
    if (itemIndex == 0) {
        KMFileAttribute *currentFile  = [_files objectAtIndex:index];
        [currentFile setBAllPage:YES];
        currentFile.pagesType = KMPDFSeleectPageType_AllPages;
        
        [self.window makeFirstResponder:self];
    } else if (itemIndex == 1) {
        KMFileAttribute *currentFile = [_files objectAtIndex:index];
        currentFile.pagesType = KMPDFSeleectPageType_OnlyOdd;
        [currentFile setBAllPage:NO];
        PDFDocument *tDocument = currentFile.myPDFDocument;
        if (tDocument == nil) {
            tDocument = [[PDFDocument alloc] initWithURL:[NSURL fileURLWithPath:currentFile.filePath]];
        }
        if ([currentFile isLocked]) {
            [tDocument unlockWithPassword:currentFile.password];
        }
        
        NSString *tPagesString = @"";
        for (NSInteger i = 0; i < tDocument.pageCount; i++) {
            if (i%2 == 0) {
                if (tPagesString.length == 0) {
                    tPagesString = [tPagesString stringByAppendingString:[NSString stringWithFormat:@"%ld",i +1]];
                }else{
                    tPagesString = [tPagesString stringByAppendingString:[NSString stringWithFormat:@",%ld",i +1]];
                }
             
            }
        }
        currentFile.pagesString = tPagesString;
        
        [self.window makeFirstResponder:self];
    } else if (itemIndex == 2) {
        KMFileAttribute *currentFile = [_files objectAtIndex:index];
        currentFile.pagesType = KMPDFSeleectPageType_OnlyEven;
        [currentFile setBAllPage:NO];
        NSString *tPagesString = @"";
        PDFDocument *tDocument = currentFile.myPDFDocument;
        if (tDocument == nil) {
            tDocument = [[PDFDocument alloc] initWithURL:[NSURL fileURLWithPath:currentFile.filePath]];
        }
        if ([currentFile isLocked]) {
            [tDocument unlockWithPassword:currentFile.password];
        }
        
        for (NSInteger i = 0; i <tDocument.pageCount; i++) {
            if (i%2) {
                if (tPagesString.length == 0) {
                    tPagesString = [tPagesString stringByAppendingString:[NSString stringWithFormat:@"%ld",i +1]];
                }else{
                    tPagesString = [tPagesString stringByAppendingString:[NSString stringWithFormat:@",%ld",i +1]];
                }
            }
        }
        currentFile.pagesString = tPagesString;
        
        [self.window makeFirstResponder:self];
    } else {
        KMFileAttribute *currentFile  = [_files objectAtIndex:index];
        currentFile.pagesType = KMPDFSeleectPageType_PagesString;
        currentFile.pagesString = @"";
        [currentFile setBAllPage:NO];
    }
}

- (void)handerReDraw
{
    //如果选择的是原始尺寸，不处理
//    KMImageTitleButton *originalSizeButton = self.originalSizeButton.subviews.lastObject;
//    if (originalSizeButton.state == NSControlStateValueOn) {
        
//    }else{
        //重新选择了界面尺寸，那么就要重绘
//        if (self.newPageSize.width < 0) {
//            NSBeep();
//            return;
//        }else{
            NSMutableArray *pagesArray = [NSMutableArray array];
            
            NSInteger pageCount = self.PDFDocument.pageCount;
            for (NSInteger i = 0; i < pageCount; i ++) {
                [pagesArray addObject:[self.PDFDocument pageAtIndex:0]];
                [self.PDFDocument removePageAtIndex:0];
            }
            
            for (NSInteger i = 0; i < pageCount; i ++) {
                PDFPage *oPage = pagesArray[i];
                NSRect pageBounds = [oPage boundsForBox:kPDFDisplayBoxCropBox];
                KMAppendPDFPage *page = [[KMAppendPDFPage alloc] init];
                [page setBounds:NSMakeRect(0, 0, pageBounds.size.width, pageBounds.size.height) forBox:kPDFDisplayBoxMediaBox];
                page.drawingPage = oPage;
//                [self.PDFDocument insertPageObject:page atIndex:i];
                
                PDFAnnotationLink *linkA = [[PDFAnnotationLink alloc] init];
                linkA.bounds = NSMakeRect(0, pageBounds.size.height-32, 120, 32);
                linkA.URL = [NSURL URLWithString:@"https://www.pdfreaderpro.com/store"];
                [page addAnnotation:linkA];
                
                [self.PDFDocument insertPage:page atIndex:i];
            }
            //如果是自定义大小，删除所有的outline，因为合并出来的outline是无效的
            if (self.PDFDocument.outlineRoot) {
                NSInteger childCount = [self.PDFDocument.outlineRoot numberOfChildren];
                NSMutableArray *PDFOutlineArray = [NSMutableArray array];
                for (NSInteger i = 0 ; i < childCount; i ++) {
                    [PDFOutlineArray addObject:[self.PDFDocument.outlineRoot childAtIndex:i]];
                }
                
                for (PDFOutline *deleteOutline in PDFOutlineArray) {
                    [deleteOutline removeFromParent];
                }
            }
//        }
//    }
}

- (BOOL)hasOpenFiles {
    NSArray *array = [KMTools getOpenDocumentURLs];
    if (array.count == 0) {
        return NO;
    }
    
    for (NSURL *fileURL in array) {
        if ([self isExistAtFilepath:fileURL.path]) {
            return YES;
        }
    }
    return NO;
}

#pragma mark - KMSelectPopButtonDelegate

- (void)km_comboBoxSelectionDidChange:(KMDesignSelect *)obj {
    if ([self.addFileButton isEqual:obj]) {
        NSInteger index = self.addFileButton.indexOfSelectedItem;
        if (index < 0) {
            index = 0;
        }
        
        if (index == 0) {
            [self itemAddFileAction];
        } else if (index == 1) {
            [self itemAddFolderAction];
        } else if (index == 2) {
            [self itemAddOpenFileAction];
        }
    }
}

- (void)km_controlTextDidChange:(KMDesignSelect *)obj {
    
}

- (void)km_controlTextDidEndEditing:(KMDesignSelect *)obj {
    
}

- (void)km_SelectPopoverWillShow:(KMDesignSelect *)obj {
    if ([self hasOpenFiles]) {
        obj.disItems = @[];
    } else {
        obj.disItems = @[NSLocalizedString(@"Add Open Files", "")];
    }
}

#pragma mark tabelView
- (NSInteger)numberOfRowsInTableView:(NSTableView *)tableView
{
    return _files.count;
}

- (nullable id)tableView:(NSTableView *)tableView viewForTableColumn:(nullable NSTableColumn *)tableColumn row:(NSInteger)row
{
    KMFileAttribute *fileAttribute = [_files objectAtIndex:row];
    
    PDFDocument *pdf = fileAttribute.myPDFDocument;
    if (pdf == nil) {
        pdf = [[PDFDocument alloc] initWithURL:[NSURL fileURLWithPath:fileAttribute.filePath]];
    }
    if ([pdf isLocked]) {
        [pdf unlockWithPassword:fileAttribute.password];
    }
    
    if (tableColumn.identifier == KMTableColumnPageRangeID) {
        KMPDFMergePageRangeTabelViewCell *cell = [tableView makeViewWithIdentifier:tableColumn.identifier owner:self];
        if (cell == nil) {
            cell = [[KMPDFMergePageRangeTabelViewCell alloc] init];
        }
        cell.wantsLayer = YES;
        cell.layer.backgroundColor = [NSColor clearColor].CGColor;
        cell.pageCount = pdf.pageCount;
        [cell updatePageRange:fileAttribute.pagesType pageStrings:fileAttribute.pagesString isFirstResponser:NO];
//        if (fileAttribute.pageRangeError) {
//            [cell updateRageRangeState:10];
//        }
        
        __weak typeof(self) weakSelf = self;
        cell.callback = ^(NSInteger index) {
            [weakSelf comboBoxAction:index atRow:row];
        };
        cell.textDidChange = ^(NSString * _Nonnull string) {
            if (row >= weakSelf.files.count) {
                return;
            }
            
            KMFileAttribute *file = [weakSelf.files objectAtIndex:row];
            [file setPagesString:string];
//            file.pageRangeError = NO;
//            dispatch_async(dispatch_get_main_queue(), ^{
//                [weakSelf.tableView reloadData];
//            });
            
        };
        cell.textDidEndEdit = ^(NSString * _Nonnull string, KMPDFMergePageRangeTabelViewCell *pageRangeCell) {
            if (row >= weakSelf.files.count) {
                return;
            }

            KMFileAttribute *file = [weakSelf.files objectAtIndex:row];
            if (!file.selectPages) {
//                file.pageRangeError = YES;
                if (weakSelf.alert) {
                    return;
                }
                
                dispatch_async(dispatch_get_main_queue(), ^{
//                    [weakSelf.tableView reloadData];
                    NSAlert *alert = [[NSAlert alloc] init];
//                    weakSelf.alert = alert;
                    [alert setAlertStyle:NSAlertStyleCritical];
                    [alert setMessageText:[NSString stringWithFormat:@"%@ %@",[file.filePath lastPathComponent],NSLocalizedString(@"Invalid page range or the page number is out of range. Please try again.", nil)]];
                    [alert runModal];
                    
                    file.pagesString = @"";
                    [pageRangeCell updatePageRange:file.pagesType pageStrings:file.pagesString isFirstResponser:NO];
                    
//                    dispatch_async(dispatch_get_main_queue(), ^{
//                        weakSelf.alert = nil;
//                    });
//                    [weakSelf.tableView reloadData];
//                    [weakSelf.tableView reloadDataForRowIndexes:[NSIndexSet indexSetWithIndex:row] columnIndexes:[NSIndexSet indexSetWithIndex:1]];
                });
            }
        };
        
        return cell;
    }
    if (tableColumn.identifier == KMTableColumnSizeID) {
        KMPDFMergeSizeTabelViewCell *cell = [tableView makeViewWithIdentifier:tableColumn.identifier owner:self];
        if (cell == nil) {
            cell = [[KMPDFMergeSizeTabelViewCell alloc] init];
        }
        
        NSString *filePath = pdf.documentURL.path;
        if (!filePath) {
            filePath = fileAttribute.filePath;
        }
        NSDictionary *attributesDic = [[NSFileManager defaultManager]attributesOfItemAtPath:filePath error:nil];
        float size = [[attributesDic objectForKey:NSFileSize] floatValue]/1024;
        cell.label.stringValue = [NSString stringWithFormat:@"%0.1f %c", truesize(size) ,  moniker(size)];
        cell.button.hidden = YES;
        
        __weak typeof(self) weakSelf = self;
        cell.callback = ^{
            NSDictionary *attrib = [[NSFileManager defaultManager] attributesOfItemAtPath:fileAttribute.filePath error:nil];
            CGFloat fileSize = [[attrib objectForKey:NSFileSize] floatValue];
            weakSelf.allFileSize =  weakSelf.allFileSize - fileSize;
            
            [weakSelf.files removeObject:fileAttribute];
            [weakSelf.tableView reloadData];
            [weakSelf updateButtonState];
        };
        
        return cell;
    }
    
    KMPDFMergeFileNameTabelViewCell *cell = [tableView makeViewWithIdentifier:@"fileName" owner:self];
    if (cell == nil) {
        cell = [[KMPDFMergeFileNameTabelViewCell alloc] init];
    }
    
    NSString *fileName = [fileAttribute.filePath lastPathComponent];
    if (fileAttribute.oriFilePath.length > 0) {
        fileName = fileAttribute.oriFilePath.stringByDeletingPathExtension.lastPathComponent;
    }
    
    cell.numberLabel.stringValue = [NSString stringWithFormat:@"%ld",(row + 1)];;
    cell.fileNameLabel.stringValue = fileName;
    cell.pageNumberLabel.stringValue = [NSString stringWithFormat:@"%ld %@",pdf.pageCount,NSLocalizedString(@"Pages", nil)];;
    
//    cell.iconImageView.image = [[pdf pageAtIndex:0] thumbnailWithSize:60*2 forBox:kPDFDisplayBoxCropBox];
    if (pdf.documentURL) {
        if (fileAttribute.password.length > 0) {
            cell.iconImageView.image = [[pdf pageAtIndex:0] thumbnailOfSize:NSMakeSize(120, 120) forBox:kPDFDisplayBoxCropBox];
        } else {
            cell.iconImageView.image = [NSImage previewForFileWithPath:pdf.documentURL ofSize:NSMakeSize(120, 120) asIcon:YES];
        }
    } else if (fileAttribute.filePath) {
//        if ([fileAttribute.filePath.pathExtension.lowercaseString isEqualToString:@"pdf"]) {
            cell.iconImageView.image = [NSImage previewForFileWithPath:[NSURL fileURLWithPath:fileAttribute.filePath]  ofSize:NSMakeSize(120, 120) asIcon:YES];
//        } else {
//            cell.iconImageView.image = [NSImage previewForFileWithPath:fileAttribute.filePath ofSize:NSMakeSize(120, 120) asIcon:YES];
//        }
    } else {
        cell.iconImageView.image = nil;
    }
    
    return cell;
}

- (BOOL)tableView:(NSTableView *)tableView shouldSelectTableColumn:(NSTableColumn *)tableColumn
{
    return NO;
}

#pragma mark -NSTableViewDelegate
- (BOOL)tableView:(NSTableView *)tv writeRowsWithIndexes:(NSIndexSet *)rowIndexes toPasteboard:(NSPasteboard*)pboard
{
    // Copy the row numbers to the pasteboard.
    NSData *zNSIndexSetData = [NSKeyedArchiver archivedDataWithRootObject:rowIndexes];
    [pboard declareTypes:[NSArray arrayWithObject:MyTableCellViewDataType] owner:self];
    [pboard setData:zNSIndexSetData forType:MyTableCellViewDataType];
    return YES;
}

- (NSDragOperation)tableView:(NSTableView *)tableView validateDrop:(id <NSDraggingInfo>)info proposedRow:(NSInteger)row proposedDropOperation:(NSTableViewDropOperation)dropOperation
{
    if (dropOperation == NSTableViewDropOn) {
        
        return NSDragOperationNone;
    }
    
    BOOL isCanDrag = NO;
    NSDragOperation result = NSDragOperationNone;
    NSPasteboard *pboard = [info draggingPasteboard];
    if ([pboard availableTypeFromArray:[NSArray arrayWithObject:NSFilenamesPboardType]])
    {
        NSArray *fileNames = [pboard propertyListForType:NSFilenamesPboardType];
        for (NSString* path in fileNames) {
            if ([[KMImageAccessoryController supportedImageTypes] containsObject:path.pathExtension.lowercaseString]) {
                isCanDrag = YES;
            }else{
                isCanDrag = NO;
                break;
            }
        }
    }else if ([pboard availableTypeFromArray:[NSArray arrayWithObject:MyTableCellViewDataType]]){
        
        result = NSDragOperationEvery;
    }
    
    if (isCanDrag) {
        
        result = NSDragOperationCopy;
    }
    return result;
}

- (BOOL)tableView:(NSTableView *)tableView acceptDrop:(id <NSDraggingInfo>)info row:(NSInteger)row dropOperation:(NSTableViewDropOperation)dropOperation
{
    BOOL result = NO;
    NSPasteboard *pboard = [info draggingPasteboard];
    _insertRow = row;
    if ([pboard availableTypeFromArray:[NSArray arrayWithObject:NSFilenamesPboardType]])
    {
        NSMutableArray *fileNames = [pboard propertyListForType:NSFilenamesPboardType];
        
        NSMutableArray *array = [NSMutableArray array];
        
        for(NSString *path in fileNames){
            if (![self isExistAtFilepath:path]) {
                continue;
            }

            NSDictionary *attrib = [[NSFileManager defaultManager] attributesOfItemAtPath:path error:nil];
            CGFloat fileSize = [[attrib objectForKey:NSFileSize] floatValue];
            
            self.allFileSize = self.allFileSize + fileSize;
            [array addObject:path];
        }
        [self addFiles:array];
        result = YES;
    } else if ([pboard availableTypeFromArray:[NSArray arrayWithObject:MyTableCellViewDataType]]){
        NSData* rowData = [pboard dataForType:MyTableCellViewDataType];
        NSIndexSet* rowIndexes = [NSKeyedUnarchiver unarchiveObjectWithData:rowData];
        NSMutableArray *moveArray = [[NSMutableArray alloc] init];
        NSMutableArray *allPhoto = [_files mutableCopy];
        NSInteger index = 0;
        
        [rowIndexes enumerateIndexesUsingBlock:^(NSUInteger idx, BOOL * _Nonnull stop) {
            KMFileAttribute * file = allPhoto[idx];
            [moveArray addObject:file];
            [_files removeObject:file];
        }];
        if (row > 0) {
            KMFileAttribute * indexFile = allPhoto[row -1];
            while([moveArray containsObject:indexFile]){
                row --;
                if ((row < 0)) {
                    indexFile = nil;
                    break;
                } else {
                    indexFile = allPhoto[row];
                }
            }
            if(indexFile){
                index = [_files indexOfObject:indexFile]+1;
            }
        }
        for (NSInteger i = 0; i< moveArray.count; i++) {
            [_files insertObject:moveArray[i] atIndex:(index +i)];
        }
        
        [_tableView reloadData];
        result = YES;
//        [moveArray release];
//        [allPhoto release];
    } else {
        result = NO;
    }
    return result;
}

- (NSTableRowView *)tableView:(NSTableView *)tableView rowViewForRow:(NSInteger)row {
    KMBatchTableRowView *rowView = [[KMBatchTableRowView alloc] init];
    rowView.backgroundView.layer.backgroundColor = [NSColor colorWithRed:237/255.f green:238/255.f blue:240/255.f alpha:1.f].CGColor;
    rowView.backgroundView.layer.cornerRadius = 4.f;
    rowView.selectionInset = NSEdgeInsetsMake(0, 16, 0, 16);
    rowView.selectionRadius = 4.f;
    rowView.selectionBackgroundColorBlock = ^NSColor * _Nonnull{
        return [NSColor colorWithRed:206/255.f green:208/255.f blue:212/255.f alpha:0.6f];
    };
    
    return rowView;
}

- (void)tableViewSelectionDidChange:(NSNotification *)notification {
    
}

#pragma mark Buutton Action

- (void)_clearData {
    for (KMFileAttribute *file in self.files) {
        if (file.oriFilePath.length > 0 && [[NSFileManager defaultManager] fileExistsAtPath:file.filePath]) {
            [[NSFileManager defaultManager] removeItemAtURL:[NSURL fileURLWithPath:file.filePath] error:nil];
        }
    }
}

- (IBAction)buttonItemClicked_Cancel:(id)sender
{
    [self _clearData];
    
    _isSuccessfully = NO;
    [NSApp endSheet:[self window] returnCode:[(NSView *)sender tag]];
    [[self window] orderOut:self];
}

- (IBAction)buttonItemClicked_Append:(id)sender
{
    if (!self.canMerge) {
        return;
    }
    
    if (KMLightMemberManager.manager.purchaseState != KMPurchaseManagerStateSubscription && _files.count > 2) {
//        [KMSubscribeWaterMarkWindowController showWithWindow: self.window isContinue: false limit type:KMSubscribeWaterMarkTypeMerge subscribeDidClick:^{
//
//        } completion:^(BOOL isSub, BOOL isWater, BOOL isClose) {
//
//        }];
        [KMSubscribeWaterMarkWindowController showWithWindow:self.window isContinue:false limit:[self mergeCountIsReach]  type:KMSubscribeWaterMarkTypeMerge subscribeDidClick:^{
                    
                } completion:^(BOOL, BOOL, BOOL) {
                    
                }];
        return;
    } else if (KMLightMemberManager.manager.purchaseState != KMPurchaseManagerStateSubscription && _files.count <= 2) {
        __weak typeof(self) weakSelf = self;
//        [KMSubscribeWaterMarkWindowController showWithWindow: self.window isContinue:true type:KMSubscribeWaterMarkTypeMerge subscribeDidClick:^{
//
//        } completion:^(BOOL isSub, BOOL isWater, BOOL isClose) {
//            if (isWater) {
//                dispatch_async(dispatch_get_main_queue(), ^{
//                    [weakSelf buttonItemClick_Append: sender];
//                });
//            }
//        }];
        BOOL isContinue = YES;
        BOOL limit = [self mergeCountIsReach];
        if (limit) {
            isContinue = NO;
        }
        
        [KMSubscribeWaterMarkWindowController showWithWindow:self.window isContinue:isContinue limit:limit  type:KMSubscribeWaterMarkTypeMerge subscribeDidClick:^{
                    
                } completion:^(BOOL isSub, BOOL isWater, BOOL isClose) {
                    if (isClose) {
                        return;
                    }
                    if (isSub) {
                        dispatch_async(dispatch_get_main_queue(), ^{
                            [weakSelf buttonItemClick_Append: sender];
                        });
                        return;
                    }
                    if (isWater && !limit) {
                        dispatch_async(dispatch_get_main_queue(), ^{
                            [weakSelf buttonItemClick_Append: sender];
                        });
                        return;
                    }
                }];
        return;
    }
    
    [self buttonItemClick_Append: sender];
}

- (void)buttonItemClick_Append:(id)sender {
    KMImageTitleButton *customSizeButton = self.customSizeButton.subviews.lastObject;
    if (customSizeButton.state == NSControlStateValueOn) {
        NSInteger widthFloat = [self.pageSizeWidthTextField.stringValue integerValue];
        NSInteger heightFloat = [self.pageSizeHeightTextField.stringValue integerValue];
        
        NSString *widthString = [NSString stringWithFormat:@"%ld",widthFloat];
        NSString *heightString = [NSString stringWithFormat:@"%ld",heightFloat];
        
        if (![widthString isEqualToString:self.pageSizeWidthTextField.stringValue] ||![heightString isEqualToString:self.pageSizeHeightTextField.stringValue]||widthFloat <= 0 ||heightFloat <= 0 ) {
            NSBeep();
            return;
        }else{
            self.newPageSize = CGSizeMake(widthFloat, heightFloat);
        }
    }
    
    //初始化数组
    if (!self.rootPDFOutlineArray) {
        self.rootPDFOutlineArray = [NSMutableArray new];
    }else{
        [self.rootPDFOutlineArray removeAllObjects];
    }
    //如果是合并，文件路径不存在，或者文件个数小于等于1 return
    if (_editType == KMPDFPageEditMerge) {
         if (_files.count <= 1 ) {
            NSAlert *alert = [[NSAlert alloc] init];
            [alert setAlertStyle:NSAlertStyleCritical];
            [alert setMessageText:NSLocalizedString(@"To start merging, please select at least 2 files.", nil)];
            [alert runModal];
            return;
        }
    }
    
    _isSuccessfully = NO;
    [self.nCancelVC setEnabled:NO];
    self.canMerge = NO;
    
    BOOL allPage = YES;//只有是全部才支持大纲的合并
    for (KMFileAttribute *file in _files) {
        if (!file.selectPages) {
            dispatch_async(dispatch_get_main_queue(), ^{
                NSAlert *alert = [[NSAlert alloc] init];
                [alert setAlertStyle:NSAlertStyleCritical];
                [alert setMessageText:[NSString stringWithFormat:@"%@ %@",[file.filePath lastPathComponent],NSLocalizedString(@"Invalid page range or the page number is out of range. Please try again.", nil)]];
                [alert runModal];
                
                [self.nCancelVC setEnabled:YES];
                self.canMerge = YES;
            });
            return;
        }
    }
    
    [_progress setHidden:NO];
    [_progress startAnimation:nil];
    self.loading_backgroundView.hidden = NO;
    
    for(KMFileAttribute *file in _files){
        //只要有一个文件不是全部page，那么就不合并大纲
        if (allPage == YES) {
            allPage = file.bAllPage;
        }
        
        //通过路径获取文件
        PDFDocument *tdocument = file.myPDFDocument;
        if (tdocument == nil) {
            tdocument = [[PDFDocument alloc] initWithURL:[NSURL fileURLWithPath:[file filePath]]];
            file.myPDFDocument = tdocument;
        }
        
        //所有的outline数组
        NSMutableArray *PDFOutlineArr = [NSMutableArray new];
        //需要解锁
        if (file.isLocked) {
            [tdocument unlockWithPassword:file.password];
        }
        //如果根存在，那么遍历出所有的outline,添加到数组中，如果不存在，那么就创建一个根
        if (tdocument.outlineRoot) {
            [self.rootPDFOutlineArray addObject:tdocument.outlineRoot];
            [self fetchAllOfChildren:tdocument.outlineRoot containerArray:PDFOutlineArr];
            [PDFOutlineArr removeObject:tdocument.outlineRoot];
        } else {
            PDFOutline *rootOutline = [[PDFOutline alloc] init];
            tdocument.outlineRoot = rootOutline;
            if (tdocument.outlineRoot) {
                [self.rootPDFOutlineArray addObject:tdocument.outlineRoot];
            }
        }
        
//        for (CPDFOutline *tOutline in PDFOutlineArr) {
            //这段代码主要是调用他的getter方法;outline显示正确
//            [tOutline.destination.page dataRepresentation];
//        }
        
        for (NSNumber *number in file.selectPages) {
            PDFPage *page = [tdocument pageAtIndex:[number integerValue]-1];
            [self.PDFDocument insertPage:page atIndex:[self.PDFDocument pageCount]];
//            [self.PDFDocument insertPageObject:page atIndex:self.PDFDocument.pageCount];
            [self.insertIndexSet addIndex:(self.PDFDocument.pageCount - 1)];
        }
        
        _isSuccessfully = YES;
    }
    
    KMFileAttribute *file = self.files.firstObject;
    NSString *fileName = file.filePath.stringByDeletingPathExtension.lastPathComponent;
    if (file.oriFilePath.length > 0) {
        fileName = file.oriFilePath.stringByDeletingPathExtension.lastPathComponent;
    }
    fileName = [NSString stringWithFormat:@"%@_Merged", fileName];
    if (_editType == KMPDFPageEditMerge) {
        _isSuccessfully = NO;
        dispatch_async(dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_DEFAULT, 0), ^{
            PDFOutline *rootline = [[PDFOutline alloc] init];
            self.PDFDocument.outlineRoot = rootline;
            if (allPage) {
                NSInteger insertIndex = 0;
                for (NSUInteger i = 0; i < self.rootPDFOutlineArray.count; i++) {
                    PDFOutline *rootPDFOutline = self->_rootPDFOutlineArray[i];
                    for (NSUInteger j = 0; j < rootPDFOutline.numberOfChildren; j ++) {
                        [self.PDFDocument.outlineRoot insertChild:[rootPDFOutline childAtIndex:j]  atIndex: insertIndex];
                        insertIndex ++;
                    }
                }
            }
            
            dispatch_async(dispatch_get_main_queue(), ^{
                if (self.limit) {
                    [self handerReDraw];
                }
                
                KMSavePanelAccessoryController *savePanelAccessoryViewController = [[KMSavePanelAccessoryController alloc] init];
                NSSavePanel *savePanel = [NSSavePanel savePanel];
                savePanel.nameFieldStringValue = fileName;
                savePanel.allowedFileTypes = @[@"pdf"];
                savePanel.accessoryView = savePanelAccessoryViewController.view;
                self.savePanelAccessoryViewController = savePanelAccessoryViewController;
                [savePanel beginSheetModalForWindow:self.window completionHandler:^(NSInteger result) {
                    if (result) {
                        NSString * outputSavePanel = savePanel.URL.path;
                        dispatch_async(dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_DEFAULT, 0), ^{
                            self->_isSuccessfully = [self.PDFDocument writeToFile:outputSavePanel];
                            
                            if (!self->_isSuccessfully) {
                                self->_isSuccessfully = [self.PDFDocument.dataRepresentation writeToFile:outputSavePanel atomically:YES];
                            }
                            dispatch_async(dispatch_get_main_queue(), ^{
                                [self->_progress setHidden:YES];
                                [self.nCancelVC setEnabled:YES];
                                self.canMerge = YES;
                                self.loading_backgroundView.hidden = YES;
                                
                                if (self->_isSuccessfully) {
                                    [self _clearData];
                                    [self recordMergeCount];
                                    
                                    [NSApp endSheet:[self window] returnCode:[(NSView *)sender tag]];
                                    [[self window] orderOut:self];

                                    if (self.saveAsPDFFilePath) {
                                        BOOL autoOpen = self.savePanelAccessoryViewController.needOpen;
                                        if (autoOpen) {
                                            self.saveAsPDFFilePath(outputSavePanel);
                                            self.saveAsPDFFilePath = nil;
                                        } else {
                                            [self viewFileAtFinder:outputSavePanel];
                                            
                                        }
                                    } else {
                                        BOOL autoOpen = self.savePanelAccessoryViewController.needOpen;
                                        if (autoOpen) {
                                            [[NSDocumentController sharedDocumentController] openDocumentWithContentsOfURL:[NSURL fileURLWithPath:outputSavePanel] display:YES completionHandler:^(NSDocument * _Nullable document, BOOL documentWasAlreadyOpen, NSError * _Nullable error) {
                                                
                                            }];
                                        } else {
                                            [self viewFileAtFinder:outputSavePanel];
                                        }
                                        
                                    }
                                } else {
                                    NSAlert *alert = [[NSAlert alloc] init];
                                    [alert setAlertStyle:NSAlertStyleCritical];
                                    [alert setMessageText:[NSString stringWithFormat:NSLocalizedString(@"Failed to merge!", nil)]];
                                    NSModalResponse response = [alert runModal];
                                    if (response == 0 ) {
                                        [NSApp endSheet:[self window] returnCode:[(NSView *)sender tag]];
                                        [[self window] orderOut:self];
                                    }
                                }
                            });
                        });
                    } else {
                        [self->_progress setHidden:YES];
                        [self.nCancelVC setEnabled:YES];
                        self.canMerge = YES;
                        self.loading_backgroundView.hidden = YES;
                    }
                }];
            });
        });
    } else {
        [self.nCancelVC setEnabled:YES];
        self.canMerge = YES;
        
        if (allPage) {
            if (!self.PDFDocument.outlineRoot) {
                PDFOutline *outline = [[PDFOutline alloc] init];
                self.PDFDocument.outlineRoot = outline;
            }
            
            for (NSInteger i = 0; i < self.rootPDFOutlineArray.count; i++) {
                PDFOutline *rootPDFOutline = _rootPDFOutlineArray[i];
                for (NSInteger j = 0; j < rootPDFOutline.numberOfChildren; j ++) {
                    [self.PDFDocument.outlineRoot insertChild:[rootPDFOutline childAtIndex:j]  atIndex:self.PDFDocument.outlineRoot.numberOfChildren];
              
                }
            }
        }
        if (_isSuccessfully) {
            if (self.limit) {
                [self handerReDraw];
            }
            
            KMSavePanelAccessoryController *savePanelAccessoryViewController = [[KMSavePanelAccessoryController alloc] init];
            NSSavePanel *savePanel = [NSSavePanel savePanel];
            savePanel.nameFieldStringValue = fileName;
            savePanel.allowedFileTypes = @[@"pdf"];
            savePanel.accessoryView = savePanelAccessoryViewController.view;
            self.savePanelAccessoryViewController = savePanelAccessoryViewController;
            [savePanel beginSheetModalForWindow:self.window completionHandler:^(NSInteger result) {
                if (result) {
                    NSString * outputSavePanel = savePanel.URL.path;
                    dispatch_async(dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_DEFAULT, 0), ^{
                        self->_isSuccessfully = [self.PDFDocument writeToFile:outputSavePanel];
                        
                        if (!self->_isSuccessfully) {
                            self->_isSuccessfully = [self.PDFDocument.dataRepresentation writeToFile:outputSavePanel atomically:YES];
                        }
                        dispatch_async(dispatch_get_main_queue(), ^{
                            [self->_progress setHidden:YES];
                            [self.nCancelVC setEnabled:YES];
                            self.canMerge = YES;
                            self.loading_backgroundView.hidden = YES;
                            
                            if (self->_isSuccessfully) {
                                [self _clearData];
                                [self recordMergeCount];
                                
                                [NSApp endSheet:[self window] returnCode:[(NSView *)sender tag]];
                                [[self window] orderOut:self];
                                
                                if (self.saveAsPDFFilePath) {
                                    BOOL autoOpen = self.savePanelAccessoryViewController.needOpen;
                                    if (autoOpen) {
                                        self.saveAsPDFFilePath(outputSavePanel);
                                        self.saveAsPDFFilePath = nil;
                                    } else {
                                        [self viewFileAtFinder:outputSavePanel];
                                        
                                    }
                                } else {
                                    BOOL autoOpen = self.savePanelAccessoryViewController.needOpen;
                                    if (autoOpen) {
                                        [[NSDocumentController sharedDocumentController] openDocumentWithContentsOfURL:[NSURL fileURLWithPath:outputSavePanel] display:YES completionHandler:^(NSDocument * _Nullable document, BOOL documentWasAlreadyOpen, NSError * _Nullable error) {
                                            
                                        }];
                                    } else {
                                        [self viewFileAtFinder:outputSavePanel];
                                    }
                                    
                                }
                            } else {
                                NSAlert *alert = [[NSAlert alloc] init];
                                [alert setAlertStyle:NSAlertStyleCritical];
                                [alert setMessageText:[NSString stringWithFormat:NSLocalizedString(@"Failed to merge!", nil)]];
                                NSModalResponse response = [alert runModal];
                                if (response == 0 ) {
                                    [NSApp endSheet:[self window] returnCode:[(NSView *)sender tag]];
                                    [[self window] orderOut:self];
                                }
                            }
                        });
                    });
                } else {
                    [self->_progress setHidden:YES];
                    [self.nCancelVC setEnabled:YES];
                    self.canMerge = YES;
                    self.loading_backgroundView.hidden = YES;
                }
            }];
        } else {
            
            NSAlert *alert = [[NSAlert alloc] init];
            [alert setAlertStyle:NSAlertStyleCritical];
            [alert setMessageText:[NSString stringWithFormat:NSLocalizedString(@"Failed to merge!", nil)]];
            NSModalResponse response = [alert runModal];
            if (response == 0 ) {
                
                [NSApp endSheet:[self window] returnCode:[(NSView *)sender tag]];
                [[self window] orderOut:self];
            }
        }
    }
}

- (IBAction)buttonItemClicked_Clear:(id)sender
{
    [_files removeAllObjects];
    [self updateButtonState];
    [self.tableView reloadData];
    self.allFileSize =  0;
}

- (IBAction)buttonItemClicked_AddFile:(id)sender
{
    NSMenu *menu = [[NSMenu alloc] init];
    NSMenuItem *addFileItem = [[NSMenuItem alloc] initWithTitle:NSLocalizedString(@"add files", "") action:@selector(itemAddFileAction) keyEquivalent:@""];
    addFileItem.target = self;
    [menu addItem:addFileItem];
    
    NSMenuItem *addFolderitem = [[NSMenuItem alloc] initWithTitle:NSLocalizedString(@"add Folder", "") action:@selector(itemAddFolderAction) keyEquivalent:@""];
    addFolderitem.target = self;
    [menu addItem:addFolderitem];
    
    NSMenuItem *addOpenFileitem = [[NSMenuItem alloc] initWithTitle:NSLocalizedString(@"add Open Files", "") action:@selector(itemAddOpenFileAction) keyEquivalent:@""];
    addOpenFileitem.target = self;
    [menu addItem:addOpenFileitem];
    
    [menu popUpMenuPositioningItem:nil atLocation:NSMakePoint(100, 10) inView:sender];
}

- (void)itemAddFileAction {
    NSOpenPanel *openPanel = [[NSOpenPanel alloc] init];
    [openPanel setAllowedFileTypes:[KMImageAccessoryController supportedImageTypes]];
    [openPanel setAllowsMultipleSelection:YES];
    openPanel.message = NSLocalizedString(@"Press ⌘/⇧ to select multiple files", nil);
    [openPanel beginSheetModalForWindow:self.window completionHandler:^(NSInteger result){
        
        if (result == NSModalResponseOK) {
            
            NSMutableArray *array = [NSMutableArray array];
            for (NSURL *fileURL in [openPanel URLs]) {
                
                if (fileURL) {
                    if (![self isExistAtFilepath:fileURL.path]) {
                        continue;
                    }
                    
                    NSDictionary *attrib = [[NSFileManager defaultManager] attributesOfItemAtPath:[fileURL path] error:nil];
                    CGFloat fileSize = [[attrib objectForKey:NSFileSize] floatValue];
                    self.allFileSize =  self.allFileSize + fileSize;
                    [array addObject:fileURL.path];
                }
            }
            [self addFiles:array];
        }
    }];
}

- (void)itemAddFolderAction {
    NSOpenPanel *openPanel = [[NSOpenPanel alloc] init];
    [openPanel setAllowedFileTypes:[KMImageAccessoryController supportedImageTypes]];
    [openPanel setAllowsMultipleSelection:YES];
    openPanel.canChooseFiles = NO;
    openPanel.canChooseDirectories = YES;
    openPanel.message = NSLocalizedString(@"Press ⌘/⇧ to select multiple files", nil);
    [openPanel beginSheetModalForWindow:self.window completionHandler:^(NSInteger result){
        
        if (result == NSModalResponseOK) {
            NSMutableArray *result = [NSMutableArray array];
            for (NSURL *url in openPanel.URLs) {
                [self findAllFiles:url result:result];
            }
            
            NSMutableArray *array = [NSMutableArray array];
            for (NSURL *fileURL in result) {
                if (fileURL) {
                    if (![self isExistAtFilepath:fileURL.path]) {
                        continue;
                    }
                    
                    NSDictionary *attrib = [[NSFileManager defaultManager] attributesOfItemAtPath:[fileURL path] error:nil];
                    CGFloat fileSize = [[attrib objectForKey:NSFileSize] floatValue];
                    self.allFileSize =  self.allFileSize + fileSize;
                    [array addObject:fileURL.path];
                }
            }
            [self addFiles:array];
        }
    }];
}

- (void)itemAddOpenFileAction {
    [_lockFilePathArr removeAllObjects];
    _lockFileIndex = 0;
    
    for (NSWindow *window in NSApp.windows) {
        NSWindowController *controller = [window windowController];
        if (![controller isKindOfClass:[CTBrowserWindowController class]]) {
            continue;
        }
        
        CTTabStripModel *model = ((CTBrowserWindowController *)controller).browser.tabStripModel;
        for (int i = 0; i < model.count; i++) {
            KMMainDocument *document = (KMMainDocument *)[model tabContentsAtIndex:i];
//            if (document.windowControllers.count == 0) {
//                break;
//            }
            if (document.isHome) {
                continue;
            }
            
            KMMainViewController *mainViewController = document.mainViewController;
            if ([self.PDFDocument.documentURL.path isEqualToString:document.fileURL.path]) {
                continue;
            }
            
            if (![self isExistAtFilepath:document.fileURL.path]) {
                continue;
            }
            
            CPDFDocument *pdfDocument = mainViewController.listView.document;
            if (pdfDocument.isLocked || (!pdfDocument.allowsCopying || !pdfDocument.allowsPrinting)) {
                [_lockFilePathArr addObject:pdfDocument.documentURL.path];
            } else {
                KMFileAttribute *file = [[KMFileAttribute alloc] init];
                file.filePath = document.fileURL.path;
                file.pdfDocument = mainViewController.document;

                [_files addObject:file];
            }
        }
    }
    
    [self updateButtonState];
    [_tableView reloadData];
    
    if ([_lockFilePathArr count]) {
        dispatch_after(dispatch_time(DISPATCH_TIME_NOW, (int64_t)(0.5 * NSEC_PER_SEC)), dispatch_get_main_queue(), ^{
            if (self.files.count == 0) {
                self.insertRow = 0;
            } else {
                self.insertRow = self.files.count;
            }
            [self openPasswordWindow];
        });
    }
}

- (void)findAllFiles:(NSURL *)folderURL result:(NSMutableArray *)result {
    NSFileManager *fm = [NSFileManager defaultManager];
    BOOL isDirectory = NO;
    [fm fileExistsAtPath:folderURL.path isDirectory:&isDirectory];
    if (!isDirectory) {
        return;
    }
    
    NSArray *contents = [fm contentsOfDirectoryAtURL:folderURL includingPropertiesForKeys:nil options:0 error:nil];
    if (contents.count == 0) {
        return;
    }
    
    NSArray *array = @[@"jpg",@"cur",@"bmp",@"jpeg",@"gif",@"png",@"tiff",@"tif",/*@"pic",*/@"ico",@"icns",@"tga",@"psd",@"eps",@"hdr",@"jp2",@"jpc",@"pict",@"sgi",@"heic",@"pdf"];
    for (NSURL *documentURL in contents) {
        BOOL isDirectory = NO;
        [fm fileExistsAtPath:documentURL.path isDirectory:&isDirectory];
        if (isDirectory) {
            [self findAllFiles:documentURL result:result];
        } else {
            if (![array containsObject:[documentURL.pathExtension lowercaseString]]) {
                continue;
            }
            
            [result addObject:documentURL];
        }
    }
}

- (IBAction)buttonClicked_ChooseSize:(KMImageTitleButton *)sender {
    int i = 0;
    for (KMImageTitleButton *button in @[self.originalSizeButton, self.A4SizeButton, self.A3SizeButton,
                                         self.USLetterSizeButton, self.USLegalButton, self.customSizeButton]) {
        KMImageTitleButton *radio = button.subviews.lastObject;
        radio.state = NSControlStateValueOff;
        radio.imageName = @"btn_radio_unsel_on";
        i += 1;
    }
    sender.state = NSControlStateValueOn;
    sender.imageName = @"btn_radio_sel_on";
    
    KMImageTitleButton *customSizeButton = self.customSizeButton.subviews.lastObject;
    self.pageSizeHeightTextField.enabled = self.pageSizeWidthTextField.enabled = [sender isEqual:customSizeButton];
    switch (sender.contentButton.tag) {
        case 0:
            
            break;
            
        case 1:
            self.newPageSize = CGSizeMake(595, 841);
            break;
        case 2:
            self.newPageSize = CGSizeMake(841, 1190);
            break;
        case 3:
            self.newPageSize = CGSizeMake(612, 792);
            break;
        case 4:
            self.newPageSize = CGSizeMake(612, 1108);
            break;
        case 5:
            self.newPageSize = CGSizeMake(595, 841);
            self.pageSizeWidthTextField.stringValue = [NSString stringWithFormat:@"%.0f",self.newPageSize.width];
            self.pageSizeHeightTextField.stringValue = [NSString stringWithFormat:@"%.0f",self.newPageSize.height];
            break;
        default:
            break;
    }
}

#pragma mark - Private Method
//获取所有的子节点
- (void)fetchAllOfChildren:(PDFOutline *)aOutline containerArray:(NSMutableArray *)aMArray
{
    if (![aMArray containsObject:aOutline]) {
        [aMArray addObject:aOutline];
    }
    for (NSInteger i = 0; i < aOutline.numberOfChildren; i++) {
        [aMArray addObject:[aOutline childAtIndex:i]];
        [self fetchAllOfChildren:[aOutline childAtIndex:i] containerArray:aMArray];
    }
}

@end

static NSString *kKMMergeCountKey = @"KMMergeCountKey";
static NSInteger kKMMergeCountMax = 2;

@implementation KMPDFEditAppendWindow (KMExtension)

- (BOOL)mergeCountIsReach {
    NSInteger cnt = [self getMergeCount];
    if (cnt >= kKMMergeCountMax) {
        return YES;
    }
    return NO;
}

- (void)recordMergeCount {
    NSInteger cnt = [self getMergeCount];
    [[NSUserDefaults standardUserDefaults] setInteger:cnt+1 forKey:kKMMergeCountKey];
    [[NSUserDefaults standardUserDefaults] synchronize];
}

- (void)clearMergeCount {
    [[NSUserDefaults standardUserDefaults] setInteger:0 forKey:kKMMergeCountKey];
    [[NSUserDefaults standardUserDefaults] synchronize];
}

- (NSInteger)getMergeCount {
    return [[NSUserDefaults standardUserDefaults] integerForKey:kKMMergeCountKey];
}

@end