PDF_Office/PDF Office/PDF Master/Class/PDFTools/Compare/View/KMCompareView.swift

//
//  KMCompareView.swift
//  PDF Reader Pro
//
//  Created by lizhe on 2023/11/14.
//

import Cocoa

typealias KMCompareViewCancelAction = (_ view: KMCompareView) -> Void
typealias KMCompareViewDoneAction = (_ view: KMCompareView, _ config: KMCompareFilesConfig) -> Void

enum KMCompareFilesType {
    case content
    case coverting
}

let CPDFOldFileQKSelectedPathsKey = "CPDFOldFileQKSelectedPathsKey"
let CPDFNewFileQKSelectedPathsKey = "CPDFNewFileQKSelectedPathsKey"
let CPDFMaxQKSelectedPathsCount = 5

class KMCompareView: BaseXibView {

    @IBOutlet weak var cancelButton: NSButton!
    @IBOutlet weak var doneButton: NSButton!
    
    @IBOutlet weak var compareTypeSegment: NSSegmentedControl!
    @IBOutlet weak var typeSegWidthConst: NSLayoutConstraint!
    
    @IBOutlet weak var comparePreviewBox: NSBox!
    
    @IBOutlet weak var oldDocumentsTitle: NSTextField!
    
    @IBOutlet weak var compareOldPreviewView: KMCompareFilesView!
    @IBOutlet weak var oldFileQKSelectedBox: NSComboBox!
    @IBOutlet weak var oldFileSelectBtn: NSButton!
    @IBOutlet weak var oldPDFView: PDFView!
    @IBOutlet weak var currentOldPageLabel: NSTextField!
    @IBOutlet weak var totalPaOldgeLabel: NSTextField!
    
    @IBOutlet weak var compareNewPreviewView: KMCompareFilesView!
    @IBOutlet weak var documentsNewTitle: NSTextField!
    @IBOutlet weak var fileQKNewSelectedBox: NSComboBox!
    @IBOutlet weak var fileSelectNewBtn: NSButton!
    @IBOutlet weak var pdfNewView: PDFView!
    @IBOutlet weak var addFileContentView: KMCompareFilesView!
    @IBOutlet weak var addFileImageView: NSImageView!
    @IBOutlet weak var addFileAddImageFramView: KMCompareFilesView!
    @IBOutlet weak var currentNewPageLabel: NSTextField!
    @IBOutlet weak var totalPaNewgeLabel: NSTextField!
    
    @IBOutlet weak var addFileTitle: NSTextField!
    @IBOutlet weak var addFileMag: NSTextField!
    
    @IBOutlet weak var pageRangeField: NSTextField!
    @IBOutlet weak var oldFileRangeField: NSTextField!
    @IBOutlet weak var pageRangeOldComboBox: NSComboBox!
    @IBOutlet weak var fileNewRangeField: NSTextField!
    @IBOutlet weak var pageRangeNewComboBox: NSComboBox!
    
    @IBOutlet weak var compareTextTypeBtn: NSButton!
    @IBOutlet weak var compareImageTypeBtn: NSButton!
    
    @IBOutlet weak var compareSettingsBtn: NSButton!
    @IBOutlet weak var settingBtnTopLayout: NSLayoutConstraint!
    
    var contentSettingWindowController: KMCompareContentSettingWindowController?
    var coveringSettingWindowController: KMCompareCoveringSettingWindowController?
    
    var pdfCompareContent: CPDFCompareContent?
    var password: String = "" {
        didSet {
            self.oldPDFView.document?.unlock(withPassword: password)
        }
    }
    
    var filePath: String? {
        didSet {
            if filePath?.count != 0 {
                self.addFilePath(filePath: filePath!, password: password)
            }
        }
    }
    private var pdfOldDocument: PDFDocument?
    var oldFileQKSelectedPaths: [String] = []
    var oldFilePaths: [String] = []
    
    private var pdfNewDocument: PDFDocument?
    var fileQKNewSelectedPaths: [String] = []
    var newFilePaths: [String] = []
    
    var fileType: KMCompareFilesType = .content {
        didSet {
            self.updateFileCompareType(fileType: fileType)
        }
    }
    
    var cancelAction: KMCompareViewCancelAction?
    var doneAction: KMCompareViewDoneAction?
    
    convenience init(pdfDocument: PDFDocument) {
        self.init()
        
        self.pdfOldDocument = pdfDocument

        let cDocument: CPDFDocument = CPDFDocument.init(url: pdfDocument.documentURL!)
        
        let file: KMFileAttribute = KMFileAttribute()
        file.pdfDocument = cDocument
        
        let config: KMCompareFilesConfig = KMCompareFilesConfig.init()
        config.fileOldAttribute = file
    }
    
    convenience init(filePath: String, password: String) {
        self.init()
        
        self.pdfOldDocument = PDFDocument.init(url: NSURL(fileURLWithPath: filePath) as URL)
        let pdfDocument = PDFDocument.init(url: NSURL(fileURLWithPath: filePath) as URL)
        let cDocument = CPDFDocument.init(url: NSURL(fileURLWithPath: filePath) as URL)
        if pdfDocument!.isLocked {
            pdfDocument!.unlock(withPassword: password)
        }
        
        if self.pdfOldDocument!.isLocked {
            self.pdfOldDocument!.unlock(withPassword: password)
        }
        
        let file: KMFileAttribute = KMFileAttribute()
        file.pdfDocument = cDocument
        
        let config = KMCompareFilesConfig.defaultConfig
        config.fileOldAttribute = file
        config.fileOldAttribute.password = password
    }
    
    func addNotification() {
        NotificationCenter.default.addObserver(self, selector: #selector(pageChangeNotification), name: NSNotification.Name.PDFViewPageChanged, object: nil)
    }
    
    override func setup() {
        fileQKNewSelectedBox.delegate = self
        oldFileQKSelectedBox.delegate = self
        
        compareTypeSegment.action =  #selector(segmentedControlClicked)
        compareTypeSegment.target = self
        
        compareTypeSegment.wantsLayer = true
        addFileContentView.wantsLayer = true
        
        addFileImageView.ignoresMultiClick = true
        
        fileQKNewSelectedBox.isEnabled = false
        oldFileQKSelectedBox.isEnabled = false
        fileQKNewSelectedBox.cell!.isEnabled = false
        oldFileQKSelectedBox.cell!.isEnabled = false
        
        currentOldPageLabel.delegate = self
        currentNewPageLabel.delegate = self
        
        oldPDFView.wantsLayer = true
        pdfNewView.wantsLayer = true
        oldPDFView.layer?.backgroundColor = NSColor.clear.cgColor
        pdfNewView.layer?.backgroundColor = NSColor.clear.cgColor
        
        compareTypeSegment.wantsLayer = true
        compareTypeSegment.layer?.cornerRadius = 5.0
        compareTypeSegment.layer?.masksToBounds = true
        compareTypeSegment.layer?.backgroundColor = NSColor.clear.cgColor
        
        addFileAddImageFramView.wantsLayer = true
        addFileAddImageFramView.layer?.backgroundColor = NSColor.clear.cgColor
        
        self.compareOldPreviewView.dragSuccessBlock = { [weak self] filePath in
            self?.updateDocument(filePath: filePath) { fileAttitude in
                
            }
        }
        
        self.compareNewPreviewView.dragSuccessBlock = { [weak self] filePath in
            self?.updateDocument(filePath: filePath, isNew: true) { fileAttitude in
                
            }
        }
        
        self.addFileContentView.dragSuccessBlock = { [weak self] filePath in
            self?.updateDocument(filePath: filePath, isNew: true) { fileAttitude in
                
            }
        }
        
        self.addFileAddImageFramView.dragSuccessBlock = { [weak self] filePath in
            self?.updateDocument(filePath: filePath, isNew: true) { fileAttitude in
                
            }
        }
        
        self.addFileContentView.mouseUpBack = { [weak self] view in
            self?.chooseFileAction(isNew: true)
        }
        
        KMCompareFilesConfig.defaultConfig.fileNewAttribute.pdfDocument = nil
        
        self.updateUI()
        self.updateLanguage()
        self.reloadData()
    }
    
    func updateLanguage() {
        compareTypeSegment.setLabel(NSLocalizedString("Side-by-Side View", comment: ""), forSegment: 0)
        compareTypeSegment.setLabel(NSLocalizedString("Compare by File Overlay", comment: ""), forSegment: 1)
        
        compareTypeSegment.setToolTip(NSLocalizedString("Side-by-Side View", comment: ""), forSegment: 0)
        compareTypeSegment.setToolTip(NSLocalizedString("Compare by File Overlay", comment: ""), forSegment: 1)

        oldDocumentsTitle.stringValue = NSLocalizedString("Old File", comment: "")
        documentsNewTitle.stringValue = NSLocalizedString("New File", comment: "")
        
        oldFileSelectBtn.title = NSLocalizedString("Choose...", comment: "")
        fileSelectNewBtn.title = NSLocalizedString("Choose...", comment: "")
        
        oldFileSelectBtn.toolTip = NSLocalizedString("Choose...", comment: "")
        fileSelectNewBtn.toolTip = NSLocalizedString("Choose...", comment: "")
            
        addFileTitle.stringValue = NSLocalizedString("Select File", comment: "")
        addFileMag.stringValue = NSLocalizedString("Click to add", comment: "")
        
        oldFileRangeField.stringValue = NSLocalizedString("Old File:", comment: "")
        fileNewRangeField.stringValue = NSLocalizedString("New File:", comment: "")
        
        pageRangeField.stringValue = NSLocalizedString("Page Range", comment: "")
        
        pageRangeOldComboBox.removeAllItems()
        pageRangeOldComboBox.addItems(withObjectValues: [NSLocalizedString("All Pages", comment: ""),
                                                              NSLocalizedString("Odd Pages Only", comment: ""),
                                                              NSLocalizedString("Even Pages Only",comment: ""),
                                                              NSLocalizedString("e.g. 1,3-5,10",comment: "")])
        pageRangeOldComboBox.placeholderString = NSLocalizedString("e.g. 1,3-5,10", comment: "")
        
        pageRangeNewComboBox.addItems(withObjectValues: [NSLocalizedString("All Pages", comment: ""),
                                                              NSLocalizedString("Odd Pages Only", comment: ""),
                                                              NSLocalizedString("Even Pages Only",comment: ""),
                                                              NSLocalizedString("e.g. 1,3-5,10",comment: "")])
        self.pageRangeNewComboBox.placeholderString = NSLocalizedString("e.g. 1,3-5,10", comment: "")
        
        self.compareTextTypeBtn.title = NSLocalizedString("Compare text", comment: "")
        self.compareImageTypeBtn.title = NSLocalizedString("Compare image", comment: "")
        
        let settingsString = "  " + NSLocalizedString("Settings", comment: "")
        compareSettingsBtn.title = settingsString
        compareSettingsBtn.state = .off
        compareSettingsBtn.setTitleColor(KMAppearance.Layout.h1Color())
        
        cancelButton.title = NSLocalizedString("Cancel", comment: "")
        doneButton.title = NSLocalizedString("Compare", comment: "")
    }
    
    func updateUI() {
        if KMAppearance.isDarkMode() {
            self.compareTypeSegment.layer?.backgroundColor = NSColor(red: 50.0/255.0, green: 53.0/255.0, blue: 54.0/255.0, alpha: 1).cgColor
            self.addFileContentView.layer?.backgroundColor = NSColor.black.cgColor
        } else {
            self.compareTypeSegment.layer?.backgroundColor = NSColor(red: 247.0/255.0, green: 247.0/255.0, blue: 247.0/255.0, alpha: 1).cgColor
            self.addFileContentView.layer?.backgroundColor = NSColor.white.cgColor
        }
    }
    
    func reloadData() {
        if(pageRangeOldComboBox.indexOfSelectedItem == 3) {
            self.window?.makeFirstResponder(pageRangeOldComboBox)
            pageRangeOldComboBox.stringValue = ""
            pageRangeOldComboBox.isSelectable = true
        }
        
        self.updatePageRangeData(view: pageRangeNewComboBox, file: KMCompareFilesConfig.defaultConfig.fileNewAttribute, isNew: true)
        self.updatePageRangeData(view: pageRangeOldComboBox, file: KMCompareFilesConfig.defaultConfig.fileOldAttribute)
        
        if (KMCompareFilesConfig.defaultConfig.isCompareText)() {
            self.compareTextTypeBtn.state = .on;
        } else {
            self.compareTextTypeBtn.state = .off;
        }
        if (KMCompareFilesConfig.defaultConfig.isCompareImage)() {
            self.compareImageTypeBtn.state = .on;
        } else {
            self.compareImageTypeBtn.state = .off;
        }
        
        self.updateSelectBoxData()
        
        self.updatePageState()
        self.updatePageState(isNew: true)
    }
    
    @objc func pageChangeNotification(notification: Notification) {
        self.updatePageState()
        self.updatePageState(isNew: true)
    }
}

extension KMCompareView {
    func addFilePath(filePath: String, isNew: Bool = false, password: String = "") {
        DispatchQueue.main.async {
            let document: PDFDocument = PDFDocument.init(url: NSURL(fileURLWithPath: filePath) as URL) ?? PDFDocument()
            let cDocument: CPDFDocument = CPDFDocument.init(url: NSURL(fileURLWithPath: filePath) as URL)!
            let file: KMFileAttribute = KMFileAttribute()
 
            file.password = password
            file.filePath = filePath
 
            document.unlock(withPassword: password)
            cDocument.unlock(withPassword: password)
            
            if isNew {
                KMCompareFilesConfig.defaultConfig.fileNewAttribute = file
                self.pdfNewDocument = document
                
                self.pdfNewView.document = document
                self.pdfNewView.autoScales = true
                self.pdfNewView.delegate = self
            } else {
                
                KMCompareFilesConfig.defaultConfig.fileOldAttribute = file
                self.pdfOldDocument = document
                
                self.oldPDFView.document = document
                self.oldPDFView.autoScales = true
                self.oldPDFView.delegate = self
            }
            
            self.addFileQKSelectPath(filePath: filePath, isNew: isNew)
            self.reloadData()
        }
    }
    
    func addFileQKSelectPath(filePath: String, isNew: Bool = false) {
        let pdfdocument = PDFDocument(url: NSURL(fileURLWithPath: filePath) as URL)
        guard let pdfdocument = pdfdocument else { return }
        
        var key = ""
        if isNew {
            key = CPDFNewFileQKSelectedPathsKey
        } else {
            key = CPDFOldFileQKSelectedPathsKey
        }
        
        //取出
        var filePaths: [String] = UserDefaults.standard.object(forKey: key) as? [String] ?? []
        if filePaths.count > CPDFMaxQKSelectedPathsCount {
            filePaths.removeLast()
            
        }
        if !filePaths.contains(filePath) {
            filePaths.insert(filePath, at: 0)
        }
        
        //存储
        UserDefaults.standard.setValue(filePaths, forKey: key)
        UserDefaults.standard.synchronize()
        
        let fileName = filePath.lastPathComponent
        
        self.updateSelectBoxData()
        if isNew {
            self.fileQKNewSelectedBox.selectItem(withObjectValue: fileName)
            self.fileQKNewSelectedBox.toolTip = fileName
        } else {
            self.oldFileQKSelectedBox.selectItem(withObjectValue: fileName)
            self.oldFileQKSelectedBox.toolTip = fileName
        }
    }
    
    func updateSelectBoxData() {
        self.oldFileQKSelectedPaths = self.updateSelectBoxItemData()
        self.oldFileQKSelectedBox.removeAllItems()
        self.oldFileQKSelectedBox.addItems(withObjectValues: self.oldFileQKSelectedPaths)
        
        self.fileQKNewSelectedPaths = self.updateSelectBoxItemData(isNew: true)
        self.fileQKNewSelectedBox.removeAllItems()
        self.fileQKNewSelectedBox.addItems(withObjectValues: self.fileQKNewSelectedPaths)
        
        if self.fileQKNewSelectedPaths.count > 0 {
            self.fileQKNewSelectedBox.isEnabled = true
        } else {
            self.fileQKNewSelectedBox.isEnabled = false
        }
        
        if self.oldFileQKSelectedPaths.count > 0 {
            self.oldFileQKSelectedBox.isEnabled = true
        } else {
            self.oldFileQKSelectedBox.isEnabled = false
        }
        
        self.oldFileQKSelectedBox.isEditable = false
        self.fileQKNewSelectedBox.isEditable = false
    }
    
    func updateSelectBoxItemData(isNew: Bool = false) -> [String] {
        let defaults = UserDefaults.standard
        var fileSelectedCachePaths: [String] = []
        if isNew {
            fileSelectedCachePaths = defaults.value(forKey: CPDFNewFileQKSelectedPathsKey) as? [String] ?? []
            self.newFilePaths = fileSelectedCachePaths
        } else {
            fileSelectedCachePaths = defaults.value(forKey: CPDFOldFileQKSelectedPathsKey) as? [String] ?? []
            self.oldFilePaths = fileSelectedCachePaths
        }
        
        var fileSelectedPaths: [String] = []
        var filePaths: [String] = []

        let fileManager = FileManager.default
        for path in fileSelectedCachePaths {
            if fileManager.fileExists(atPath: path) {
                fileSelectedPaths.append(path.lastPathComponent)
                filePaths.append(path)

            }
        }
        
        if isNew {
            self.newFilePaths = filePaths
        } else {
            self.oldFilePaths = filePaths
        }
        return fileSelectedPaths
    }
    
    func updatePageState(isNew: Bool = false) {
        var pageDocument = PDFDocument()
        var pdfView = PDFView()
        var currentPageLabel = NSTextField()
        var totalPageLabel = NSTextField()
        
        if isNew {
            addFileContentView.isHidden = false
            guard let document = KMCompareFilesConfig.defaultConfig.fileNewAttribute.pdfDocument else { return }
            pdfView = pdfNewView
            pageDocument = pdfView.document ?? PDFDocument()
            currentPageLabel = currentNewPageLabel
            totalPageLabel = totalPaNewgeLabel
            addFileContentView.isHidden = true
        } else {
            guard let document = KMCompareFilesConfig.defaultConfig.fileOldAttribute.pdfDocument else { return }
            pdfView = oldPDFView
            pageDocument = pdfView.document ?? PDFDocument()
            currentPageLabel = currentOldPageLabel
            totalPageLabel = totalPaOldgeLabel
        }
        // 隐藏PDFView滑动条
        pdfView.documentView?.enclosingScrollView?.hasVerticalScroller = false
        pdfView.documentView?.enclosingScrollView?.hasHorizontalScroller = false
        let pageCount = pageDocument.pageCount
        var currentPageIndex = 0
        if(pdfView.currentPage != nil) {
            currentPageIndex = Int(pageDocument.index(for: pdfView.currentPage!))
        }
        
        if(pageCount > 0) {
            currentPageLabel.stringValue = "\(currentPageIndex + 1)"
        } else {
            currentPageLabel.stringValue = "\(currentPageIndex)"
        }
        totalPageLabel.stringValue = "/ \(pageCount)"
    }
    
    func updateDocument(filePath: String, isNew: Bool = false, completion: @escaping (_ fileAttitude: KMFileAttribute?) -> Void) {
        let isAccessFilePath = AppSandboxFileAccess().accessFileURL(NSURL(fileURLWithPath: filePath) as URL, persistPermission: true) {
            
        }
        
        if isAccessFilePath {
            print("有权限")
            var pdfDocument = CPDFDocument()
            if isNew {
                pdfDocument = KMCompareFilesConfig.defaultConfig.fileNewAttribute.pdfDocument
            } else {
                pdfDocument = KMCompareFilesConfig.defaultConfig.fileOldAttribute.pdfDocument
            }
            
            if (pdfDocument?.documentURL.path == filePath) {
                let alert = NSAlert()
                alert.alertStyle = NSAlert.Style.critical
                alert.messageText = NSLocalizedString("There is no difference between the two documents.", comment: "")
                alert.runModal()
                completion(nil)
                return
            } else {
                NSWindowController.checkPassword(url: NSURL(fileURLWithPath: filePath) as URL, type: .owner) { success, resultPassword in
                    if success {
                        let file = KMFileAttribute()
                        file.pdfDocument = pdfDocument
                        file.password = resultPassword
                        completion(file)
                    } else {
                        completion(nil)
                    }
                }
            }
        } else {
            print("无权限")
        }
    }
    
    func updatePageRangeData(view: NSComboBox, file: KMFileAttribute, isNew: Bool = false) {
        switch (file.pagesType) {
        case .all:
            if view.numberOfItems > 0 {
                view.selectItem(at: 0)
            }
            view.isEditable = false
            view.delegate = nil
            break;
        case .odd:
            if view.numberOfItems > 0 {
                view.selectItem(at: 1)
            }
            view.isEditable = false
            view.delegate = nil
            break;
        case .even:
            if view.numberOfItems > 0 {
                view.selectItem(at: 2)
            }
            view.isEditable = false
            view.delegate = nil
            break;
        case .custom:
            view.delegate = self
            view.stringValue = file.pagesString
            view.isEditable = true
                break;
        default: break
        }
    }
    
    func updateFileCompareType(fileType: KMCompareFilesType) {
        if fileType == .content {
            compareTypeSegment.selectedSegment = 0
            compareTextTypeBtn.isHidden = false
            compareImageTypeBtn.isHidden = false
            settingBtnTopLayout.constant = 81
        } else {
            compareTypeSegment.selectedSegment = 1
            compareTextTypeBtn.isHidden = true
            compareImageTypeBtn.isHidden = true
            settingBtnTopLayout.constant = 20
        }
    }
    
    func updatePageRange(view: NSComboBox, isNew: Bool = false) {
        let config = KMCompareFilesConfig.defaultConfig
        var index = pageRangeOldComboBox.indexOfSelectedItem
        
        var file = config.fileOldAttribute
        if isNew {
            index = pageRangeNewComboBox.indexOfSelectedItem
            file = config.fileNewAttribute
        }
        switch index {
        case 0:
            file.bAllPage = true
            file.pagesType = .all
            view.delegate = nil
            view.isEditable = false
        case 1:
            file.bAllPage = false
            file.pagesType = .odd
            view.delegate = nil
            view.isEditable = false
        case 2:
            file.bAllPage = false
            file.pagesType = .even
            view.delegate = nil
            view.isEditable = false
        case 3:
            file.bAllPage = false
            file.pagesType = .custom
            view.delegate = self
            view.stringValue = ""
            view.isEditable = true
            view.isSelectable = true
            self.window?.makeFirstResponder(view)
        default:
            break
        }
    }
}

extension KMCompareView {
    @IBAction func cancelButtonAction(_ sender: Any) {
        guard let callBack = cancelAction else { return }
        
        callBack(self)
    }
    
    @IBAction func convertButtonAction(_ sender: Any) {
        guard let callBack = doneAction else { return }
        
        if KMCompareFilesConfig.defaultConfig.fileOldAttribute.pagesType == .custom {
            KMCompareFilesConfig.defaultConfig.fileOldAttribute.pagesString = self.pageRangeOldComboBox.stringValue
        }
        
        if KMCompareFilesConfig.defaultConfig.fileNewAttribute.pagesType == .custom {
            KMCompareFilesConfig.defaultConfig.fileNewAttribute.pagesString = self.pageRangeNewComboBox.stringValue
        }
        
        callBack(self, KMCompareFilesConfig.defaultConfig)
    }
    
    @IBAction func oldFilesSelectBoxAction(_ sender: Any) {
        let selectIndex = self.oldFileQKSelectedBox.indexOfSelectedItem
        if selectIndex >= 0 {
            let selectItem = self.oldFileQKSelectedBox.itemObjectValue(at: selectIndex)
            let filePath = self.oldFilePaths[selectIndex]
            self.updateDocument(filePath: filePath) { fileAttitude in
                if fileAttitude != nil {
                    self.addFilePath(filePath: filePath , isNew: false, password: fileAttitude?.password ?? "")
                } else {
                    self.oldFileQKSelectedBox.selectItem(withObjectValue: self.oldPDFView.document?.documentURL?.path.lastPathComponent)
                }
            }
        }
    }
    
    @IBAction func newFilesSelectBoxAction(_ sender: Any) {
        let selectIndex = self.fileQKNewSelectedBox.indexOfSelectedItem
        if selectIndex >= 0 {
            let selectItem = self.fileQKNewSelectedBox.itemObjectValue(at: selectIndex)
            let filePath = self.newFilePaths[selectIndex]
            self.updateDocument(filePath: filePath) { fileAttitude in
                if fileAttitude != nil {
                    self.addFilePath(filePath: filePath , isNew: true, password: fileAttitude?.password ?? "")
                } else {
                    self.fileQKNewSelectedBox.selectItem(withObjectValue: self.pdfNewView.document?.documentURL?.path.lastPathComponent)
                }
            }
        }
    }
    
    @IBAction func oldChooseButtonAction(_ sender: Any) {
        self.chooseFileAction()
    }
    
    @IBAction func newChooseButtonAction(_ sender: Any) {
        self.chooseFileAction(isNew: true)
    }
    
    @IBAction func oldNextButtonAction(_ sender: Any) {
        self.oldPDFView.goToNextPage(nil)
        self.updatePageState()
    }
    
    @IBAction func oldPreviousButtonAction(_ sender: Any) {
        self.oldPDFView.goToPreviousPage(nil)
        self.updatePageState()
    }
    
    @IBAction func newNextButtonAction(_ sender: Any) {
        self.pdfNewView.goToNextPage(nil)
        self.updatePageState(isNew: true)
    }
    
    @IBAction func newPreviousButtonAction(_ sender: Any) {
        self.pdfNewView.goToPreviousPage(nil)
        self.updatePageState(isNew: true)
    }
    
    @IBAction func oldPageRangeBoxAction(_ sender: Any) {
        self.updatePageRange(view: self.pageRangeOldComboBox)
    }
    
    @IBAction func newPageRangeBoxAction(_ sender: Any) {
        self.updatePageRange(view: self.pageRangeNewComboBox, isNew: true)
    }
    
    @IBAction func compareTextButtonAction(_ sender: NSButton) {
        let isCompareText = sender.state == .on ?true:false
        KMCompareFilesConfig.defaultConfig.setIsCompareText(isCompareText)
    }
    
    @IBAction func compareImageButtonAction(_ sender: NSButton) {
        let isCompareImage = sender.state == .on ?true:false
        KMCompareFilesConfig.defaultConfig.setIsCompareImage(isCompareImage)
    }
    
    @IBAction func settingButtonAction(_ sender: Any) {
        if fileType == .content {
            if contentSettingWindowController == nil {
                let controller = KMCompareContentSettingWindowController(windowNibName: "KMCompareContentSettingWindowController")
                contentSettingWindowController = controller
            }
            NSWindow.currentWindow().addChildWindow(contentSettingWindowController!.window!, ordered: .above)
            contentSettingWindowController!.window?.center()
        } else {
            if coveringSettingWindowController == nil {
                let controller = KMCompareCoveringSettingWindowController(windowNibName: "KMCompareCoveringSettingWindowController")
                coveringSettingWindowController = controller
            }
            NSWindow.currentWindow().addChildWindow(coveringSettingWindowController!.window!, ordered: .above)
            coveringSettingWindowController!.window?.center()
        }
    }
    
    @objc func segmentedControlClicked(sender: NSSegmentedControl) {
        let selectedType = self.compareTypeSegment.selectedSegment
        var type: KMCompareFilesType = .content
        if (selectedType == 0) {
            type = .content;
        } else {
            type = .coverting;
        }
        self.fileType = type
    }
    
    func chooseFileAction(isNew: Bool = false) {
        let openPanel = NSOpenPanel()
        openPanel.allowedFileTypes = ["pdf"]
        openPanel.allowsMultipleSelection = false
        openPanel.beginSheetModal(for: self.window!) { (result) in
            if result == NSApplication.ModalResponse.OK {

                if let filePath = openPanel.url?.path {
                    let url = NSURL(fileURLWithPath: filePath)
                    AppSandboxFileAccess().persistPermissionURL(url as URL)
                    let bookmarkData = try?url.bookmarkData(options: NSURL.BookmarkCreationOptions.withSecurityScope, includingResourceValuesForKeys: nil, relativeTo: nil)
                    if bookmarkData != nil {
                        AppSandboxFileAccess().bookmarkPersistanceDelegate.setBookmarkData(bookmarkData! as Data, for: url as URL)
                        AppSandboxFileAccess().bookmarkPersistanceDelegate.setBookmarkData(bookmarkData! as Data, for: NSURL(fileURLWithPath: url.path!) as URL)
                    }
                     
                    self.updateDocument(filePath: filePath, isNew: isNew) { [weak self] file in
                        if let _ = file {
                            self?.addFilePath(filePath: filePath, isNew: isNew, password: file?.password ?? "")
                        }
                    }
                }
            }
        }

    }
}


extension KMCompareView: NSComboBoxDelegate {
    
}

extension KMCompareView: PDFViewDelegate {
    
}