PDF_Office/PDF Office/PDF Master/Class/PDFTools/Secure/Window/KMPasswordInputWindow.swift

//
//  KMPasswordInputWindow.swift
//  PDF Reader Pro
//
//  Created by tangchao on 2022/11/29.
//

import Cocoa
import PDFKit

@objc enum KMPasswordInputWindowType: Int {
    case open = 1
    case owner = 2
}

@objc enum KMPasswordInputWindowResult: Int {
    case cancel = 1
    case success = 2
}

typealias KMPasswordInputWindowItemClick = (Int, String) -> ()
private var passwordInputWindow: KMPasswordInputWindow?
private var passwordInputWindow_private: KMPasswordInputWindow?

@objcMembers class KMPasswordInputWindow: NSWindow {
    @IBOutlet weak var titleLabel: NSTextField!
    
    @IBOutlet weak var despLabel: NSTextField!
    @IBOutlet weak var secureTextFiled: KMSecureTextFiled!
    
    @IBOutlet weak var iconImageView: NSImageView!
    
    @IBOutlet weak var passwordErrorLabel: NSTextField!
    @IBOutlet weak var cancelButton: NSButton!
    @IBOutlet weak var confirmButton: NSButton!
    
    var confirmButtonVC: KMDesignButton?
    
    static var myDocumentURL: URL!
    var documentURL: URL {
        get {
            return KMPasswordInputWindow.myDocumentURL
        }
        set {
            KMPasswordInputWindow.myDocumentURL = newValue
        }
    }
    
    static var myItemClick: KMPasswordInputWindowItemClick!
    var itemClick: KMPasswordInputWindowItemClick {
        get {
            return KMPasswordInputWindow.myItemClick
        }
        set {
            KMPasswordInputWindow.myItemClick = newValue
        }
    }
    
    static var myType: KMPasswordInputWindowType = .open
    var type: KMPasswordInputWindowType {
        get {
            return KMPasswordInputWindow.myType
        }
        set {
            KMPasswordInputWindow.myType = newValue
            
            let titleLabel = self.myTitleLabel
            if (titleLabel != nil) {
//                if (newValue == .open) {
//                    titleLabel!.stringValue = NSLocalizedString("Open Password", comment: "")
//                } else {
                    titleLabel!.stringValue = NSLocalizedString("Permission Password", comment: "")
//                }
            }

            var despLabel = self.myDespLabel
            if (despLabel != nil) {
                var fileName = NSLocalizedString("", comment: "")
                if (self.documentURL != nil) {
                    fileName.append("\(self.documentURL.lastPathComponent)")
                }
                despLabel!.maximumNumberOfLines = 3
                despLabel?.lineBreakMode = .byTruncatingTail
                despLabel?.cell?.truncatesLastVisibleLine = true
                
                let ps = NSMutableParagraphStyle()
                ps.lineSpacing = 5

                    despLabel!.stringValue = "\"\(fileName)\"\(NSLocalizedString("This PDF is password protected. Please enter the password below to access this PDF.", comment: ""))"
                    despLabel!.attributedStringValue = NSAttributedString(string: despLabel!.stringValue, attributes: [.foregroundColor : KMAppearance.Layout.h0Color(), .font : NSFont.SFProTextRegularFont(14), .paragraphStyle : ps])
            }
            
        }
    }
    
    static var canEncrpty = false
    static var permissionsStatus: CPDFDocumentPermissions = .none
    
    deinit {
        KMPrint("KMPasswordInputWindow 已释放了")
    }
    
    override init(contentRect: NSRect, styleMask style: NSWindow.StyleMask, backing backingStoreType: NSWindow.BackingStoreType, defer flag: Bool) {
        super.init(contentRect: contentRect, styleMask: style, backing: backingStoreType, defer: flag)
    }
    
    override func awakeFromNib() {
        super.awakeFromNib()
        
        if (titleLabel != nil) {
            passwordInputWindow_private = self
            
            titleLabel.stringValue = NSLocalizedString("Permission Password", comment: "")
            self.titleLabel.textColor = KMAppearance.Layout.h0Color()
            titleLabel.font = NSFont.SFProTextRegularFont(16)
//            self.titleLabel.window?.appearance = NSAppearance(named: .aqua)
        }
        
        if despLabel != nil {
            despLabel.stringValue = NSLocalizedString("This PDF is password protected. Please enter the password below to access this PDF.", comment: "")
            self.despLabel.textColor = KMAppearance.Layout.h0Color()
            despLabel.font = NSFont.SFProTextRegularFont(14)
            despLabel.isSelectable = false
            let ps = NSMutableParagraphStyle()
            ps.lineSpacing = 5
            despLabel.maximumNumberOfLines = 2
            despLabel.lineBreakMode = .byTruncatingTail
            ps.lineBreakMode = .byTruncatingTail
            despLabel.attributedStringValue = NSAttributedString(string: despLabel.stringValue, attributes: [.foregroundColor : KMAppearance.Layout.h0Color(), .font : NSFont.SFProTextRegularFont(14), .paragraphStyle : ps])
        }
        
        if (iconImageView != nil) {
            self.iconImageView.image = NSImage(named: "KMImageNameSecureIcon")
        }

        if secureTextFiled != nil {
            secureTextFiled.backgroundView.wantsLayer = true
            secureTextFiled.backgroundView.layer?.borderWidth = 1
            secureTextFiled.backgroundView.layer?.borderColor = NSColor.buttonBorderColor().cgColor
            secureTextFiled.backgroundView.layer?.cornerRadius = 4
            secureTextFiled.placeholderString = NSLocalizedString("Password", comment: "")
            
            let rightView = NSView()
            rightView.frame = NSMakeRect(0, 0, 40, 32);
            secureTextFiled.rightView = rightView
            let clearButton = NSButton()
            rightView.addSubview(clearButton)
            clearButton.frame = NSMakeRect(10, 6, 20, 20)
            clearButton.wantsLayer = true
            clearButton.image = NSImage(named: "KMImageNameSecureClearIcon")
            clearButton.isBordered = false
            clearButton.target = self
            clearButton.action = #selector(clearButtonAction)
            rightView.isHidden = true

            secureTextFiled.becomeFirstResponderHandler = { [unowned self] securetextFiled in
                let mySecureTextField: KMSecureTextFiled = securetextFiled as! KMSecureTextFiled
                mySecureTextField.backgroundView.wantsLayer = true
                mySecureTextField.backgroundView.layer?.borderColor = NSColor.km_init(hex: "#1770F4").cgColor
                
                if mySecureTextField.password().isEmpty {
                    self.secureTextFiled.rightView?.isHidden = true
                } else {
                    self.secureTextFiled.rightView?.isHidden = false
                }
                if self.passwordErrorLabel != nil {
                    self.passwordErrorLabel.isHidden = true
                }
            }
            secureTextFiled.valueDidChange = { [unowned self] view, string in
                view.backgroundView.layer?.borderColor = NSColor.km_init(hex: "#1770F4").cgColor
                if self.passwordErrorLabel != nil {
                    self.passwordErrorLabel.isHidden = true
                }
                if string.isEmpty {
                    view.rightView?.isHidden = true
                    self.dealConfirmButtonEnabledState(enabled: false)
                } else {
                    view.rightView?.isHidden = false
                    self.dealConfirmButtonEnabledState(enabled: true)
                }
            }
            
            secureTextFiled.enterAction = { [unowned self] in
                self.confirmButtonAction()
            }
        }
        
        if passwordErrorLabel != nil {
            passwordErrorLabel.stringValue = NSLocalizedString("Incorrect password. Please try again.", comment: "")
            passwordErrorLabel.font = NSFont.systemFont(ofSize: 12)
            passwordErrorLabel.wantsLayer = true
            passwordErrorLabel.textColor = NSColor.km_init(hex: "#F3465B")
            passwordErrorLabel.isHidden = true
        }
        
        if cancelButton != nil {
            for button in [cancelButton, confirmButton] {
                button?.wantsLayer = true
                button?.layer?.cornerRadius = 4
                
                button!.target = self
                if ((button?.isEqual(to: cancelButton))!) {
                    button?.layer?.borderWidth = 1
                    button?.layer?.borderColor = NSColor.buttonBorderColor().cgColor
//                    button?.title = NSLocalizedString("Cancel", comment: "")
                    button?.title = ""
//                    button?.setTitleColor(NSColor.buttonTitleColor())
//                    button?.font = NSFont.SFProTextRegularFont(14)
//                    button?.action = #selector(cancelButtonAction)
                } else {
//                    button?.title = NSLocalizedString("Open", comment: "")
//                    button?.attributedTitle = NSMutableAttributedString(string: button!.title, attributes: [.foregroundColor : NSColor.white])
//                    button?.font = NSFont.SFProTextRegularFont(14)
//                    button?.action = #selector(confirmButtonAction)
                    button?.title = ""
                }
            }
            
            let cancelButtonVC = KMDesignButton(withType: .Text)
            self.cancelButton.addSubview(cancelButtonVC.view)
            cancelButtonVC.view.frame = self.cancelButton.bounds
            cancelButtonVC.view.autoresizingMask = [.width, .height]
            cancelButtonVC.stringValue = NSLocalizedString("Cancel", comment: "")
            cancelButtonVC.button(type: .Sec_Icon, size: .m)
            cancelButtonVC.target = self
            cancelButtonVC.action = #selector(cancelButtonAction)
            cancelButtonVC.button.keyEquivalent = KMKeyEquivalent.esc.string()
            
            let confirmButtonVC = KMDesignButton(withType: .Text)
            self.confirmButton.addSubview(confirmButtonVC.view)
            confirmButtonVC.view.frame = self.confirmButton.bounds
            confirmButtonVC.view.autoresizingMask = [.width, .height]
            confirmButtonVC.stringValue = NSLocalizedString("Open", comment: "")
            confirmButtonVC.button(type: .Cta, size: .m)
            confirmButtonVC.target = self
            confirmButtonVC.action = #selector(confirmButtonAction)
            self.confirmButtonVC = confirmButtonVC
            self.confirmButtonVC?.button.keyEquivalent = KMKeyEquivalent.enter
            
            dealConfirmButtonEnabledState(enabled: false)
        }
    }
    
    func window() -> Self? {
        KMPasswordInputWindow.canEncrpty = false
        KMPasswordInputWindow.permissionsStatus = .none
        
        var topLevelArray: NSArray? = nil
        Bundle.main.loadNibNamed(NSNib.Name("KMPasswordInputWindow"), owner: self, topLevelObjects: &topLevelArray)
        guard let results = topLevelArray else {
            return nil
        }
        
        var passwordInputWindow: KMPasswordInputWindow!
        for object in results {
            let window: NSObject = object as! NSObject
            if window.isKind(of: KMPasswordInputWindow.self) {
                passwordInputWindow = window as! KMPasswordInputWindow?
            }
        }
        
        guard let myWindow = passwordInputWindow else {
            return nil
        }
        return myWindow as? Self
    }
    
    @objc func cancelButtonAction() {
        guard let callback = KMPasswordInputWindow.myItemClick else {
            return
        }
        
        callback(1, "")
    }
    
    @objc func confirmButtonAction() {
        if (!KMPasswordInputWindow.canEncrpty) {
            return
        }
        
        if (KMPasswordInputWindow.myDocumentURL == nil) {
            return
        }
        
        if (KMPasswordInputWindow.myType == .open) {
            let document: CPDFDocument = CPDFDocument(url: KMPasswordInputWindow.myDocumentURL)
            if document.permissionsStatus == .none {
                let reuslt = document.unlock(withPassword: secureTextFiled.password())
                /// CPDFDocumentPermissionsNone 解锁失败
                /// CPDFDocumentPermissionsUser 输入的开启密码
                /// CPDFDocumentPermissionsOwner 输入的权限密码
                KMPasswordInputWindow.permissionsStatus = document.permissionsStatus
                if document.permissionsStatus != CPDFDocumentPermissions.none { /// 密码正确
                    guard let callback = KMPasswordInputWindow.myItemClick else {
                        return
                    }
                    
                    callback(2, secureTextFiled.password())
                } else { /// 密码错误
                    if passwordErrorLabel != nil {
                        passwordErrorLabel.isHidden = false
                        passwordErrorLabel.stringValue = NSLocalizedString("Incorrect password. Please try again.", comment: "")
                    }
                    if secureTextFiled != nil {
                        secureTextFiled.backgroundView.layer?.borderColor = NSColor.km_init(hex: "#F3465B").cgColor
                    }
                }
            }
            return
        }
        
        /// 权限密码类型
        let document: CPDFDocument = CPDFDocument(url: KMPasswordInputWindow.myDocumentURL)
        if (document.isLocked) {
            if document.permissionsStatus == CPDFDocumentPermissions.none {
                let reuslt = document.unlock(withPassword: secureTextFiled.password())
                KMPasswordInputWindow.permissionsStatus = document.permissionsStatus
                
                if document.permissionsStatus == .owner { /// 密码正确
                    guard let callback = KMPasswordInputWindow.myItemClick else {
                        return
                    }
                    
                    callback(2, secureTextFiled.password())
                } else { /// 密码错误
                    if passwordErrorLabel != nil {
                        passwordErrorLabel.isHidden = false
                        passwordErrorLabel.stringValue = NSLocalizedString("Incorrect password. Please try again.", comment: "")
                    }
                    if secureTextFiled != nil {
                        secureTextFiled.backgroundView.layer?.borderColor = NSColor.km_init(hex: "#F3465B").cgColor
                    }
                }
            }
        } else {
            if document.permissionsStatus == CPDFDocumentPermissions.user {
                document.unlock(withPassword: secureTextFiled.password())
                KMPasswordInputWindow.permissionsStatus = document.permissionsStatus
                if document.permissionsStatus == .owner { /// 密码正确
                    guard let callback = KMPasswordInputWindow.myItemClick else {
                        return
                    }
                    
                    callback(2, secureTextFiled.password())
                } else { /// 密码错误
                    if passwordErrorLabel != nil {
                        passwordErrorLabel.isHidden = false
                        passwordErrorLabel.stringValue = NSLocalizedString("Incorrect password. Please try again.", comment: "")
                    }
                    if secureTextFiled != nil {
                        secureTextFiled.backgroundView.layer?.borderColor = NSColor.km_init(hex: "#F3465B").cgColor
                    }
                }
            }
        }
    }
    
    @objc func clearButtonAction() {
        if (self.secureTextFiled != nil) {
            self.secureTextFiled.clear()
        }
    }

    func dealConfirmButtonEnabledState(enabled: Bool) {
        if confirmButton != nil {
            KMPasswordInputWindow.canEncrpty = enabled
            
//            confirmButton.wantsLayer = true
//            confirmButton.layer?.backgroundColor = NSColor.buttonFunctionBackgroundColor(enabled: enabled).cgColor
//            confirmButton?.title = NSLocalizedString("Open", comment: "")
//            var color = NSColor.buttonTitleColor(enabled: enabled)
//            if (enabled) {
//                color = NSColor.km_init(hex: "#FFFFFF")
//            }
//            confirmButton?.attributedTitle = NSMutableAttributedString(string: confirmButton!.title, attributes: [.foregroundColor : color])
            
            if (self.confirmButtonVC != nil) {
                self.confirmButtonVC?.enabled = enabled
            }
        }
    }
    
    override func mouseUp(with event: NSEvent) {
        super.mouseUp(with: event)
        
        self.makeFirstResponder(nil)
//        if self.secureTextFiled != nil {
//            secureTextFiled.backgroundView.layer?.borderColor = NSColor.black.cgColor
//        }
        
        var contentBox: NSBox = NSBox()
        for i in 0 ... (contentView?.subviews.count)!-1 {
            if i == 1 {
                contentBox = contentView?.subviews[i] as! NSBox
            }
        }
        
        var secureTextField: KMSecureTextFiled!
        for i in 0 ... (contentBox.contentView?.subviews.count)!-1 {
            let view: NSView = (contentBox.contentView?.subviews[i])!
            if view.isKind(of: KMSecureTextFiled.self) {
                secureTextField = view as? KMSecureTextFiled
            }
        }
        
        if secureTextField != nil {
            secureTextField.backgroundView.layer?.borderColor = NSColor.buttonBorderColor().cgColor
        }
        if (passwordErrorLabel != nil) {
            passwordErrorLabel.isHidden = true
        }
    }
}

extension KMPasswordInputWindow {
    var myTitleLabel: NSTextField? {
        get {
            let topBox = self.contentView?.subviews.first
            if (topBox == nil || !(topBox is NSBox)) {
                return nil
            }
            
            var label: NSTextField?
            for i in 0 ..< (((topBox as! NSBox).contentView?.subviews.count)!) {
                let view: NSView = ((topBox as! NSBox).contentView?.subviews[i])!
                if view.isKind(of: NSTextField.self) {
                    label = view as? NSTextField
                    break
                }
            }
            
            return label
        }
    }
    
    var myDespLabel: NSTextField? {
        get {
            var contentBox: NSBox = NSBox()
            for i in 0 ..< (contentView?.subviews.count)! {
                if i == 1 {
                    contentBox = contentView?.subviews[i] as! NSBox
                    break
                }
            }
            
            var label: NSTextField?
            for i in 0 ... (contentBox.contentView?.subviews.count)!-1 {
                let view: NSView = (contentBox.contentView?.subviews[i])!
                if view.isKind(of: NSTextField.self) {
                    label = view as? NSTextField
                    break
                }
            }
            
            return label
        }
    }
    
    @objc class func openWindow(window: NSWindow, type: KMPasswordInputWindowType = .open, url: URL, callback: @escaping (KMPasswordInputWindowResult, String?)->Void) -> KMPasswordInputWindow {
        let passwordWindow = KMPasswordInputWindow().window()
        passwordWindow?.documentURL = url
        passwordWindow?.type = type
        
        passwordInputWindow = passwordWindow

        passwordWindow?.itemClick = { index, string in
            if (passwordInputWindow?.sheetParent != nil) {
                passwordInputWindow?.sheetParent?.endSheet(passwordInputWindow!)
            }
            passwordInputWindow = nil
            passwordInputWindow_private = nil
            if index == 1 { /// 关闭
                callback(.cancel, "")
                return
            }
            /// 解密成功
            callback(.success, string)
        }

        window.beginSheet(passwordWindow!)
        return passwordWindow!
    }
    
    @objc class func success_openWindow(window: NSWindow, type: KMPasswordInputWindowType = .open, url: URL, callback: @escaping (String)->Void) {
        let passwordWindow = KMPasswordInputWindow().window()
        passwordWindow?.documentURL = url
        passwordWindow?.type = type
        
        passwordInputWindow = passwordWindow

        passwordWindow?.itemClick = { index, string in
            if (passwordInputWindow?.sheetParent != nil) {
                passwordInputWindow?.sheetParent?.endSheet(passwordInputWindow!)
            }
            passwordInputWindow = nil
            passwordInputWindow_private = nil
            if index == 1 { /// 关闭
                return
            }
            /// 解密成功
            callback(string)
        }

        window.beginSheet(passwordWindow!)
    }
    
    @objc class func openWindow(window: NSWindow, url: URL, needOwner: Bool, callback: @escaping (KMPasswordInputWindowResult, String?)->Void) {
        let passwordWindow = KMPasswordInputWindow().window()
        passwordWindow?.documentURL = url
        
        let document = CPDFDocument(url: url)
        if (document?.isLocked != nil && document!.isLocked) {
            passwordWindow?.type = .open
        } else if (document?.isEncrypted != nil && document!.isEncrypted) {
            passwordWindow?.type = .owner
        } else {
            passwordWindow?.type = .open
        }
        
        passwordInputWindow = passwordWindow

        passwordWindow?.itemClick = { index, string in
            let type = passwordInputWindow?.type
            if (passwordInputWindow?.sheetParent != nil) {
                passwordInputWindow?.sheetParent?.endSheet(passwordInputWindow!)
            }
            passwordInputWindow = nil
            passwordInputWindow_private = nil
            if index == 1 { /// 关闭
                callback(.cancel, "")
                return
            }
            /// 解密成功
            if (type == .owner) { // 解除的是权限密码
                callback(.success, string)
                return
            }
            
            // 解除的是开启密码
            if (needOwner == false) { // 不需要解除权限密码
                callback(.success, string)
                return
            }
            
            if (document == nil) {
                callback(.success, string)
                return
            }
            
            document?.unlock(withPassword: string)
            if (document?.permissionsStatus == .owner) { // 用户是使用的权限密码解密
                callback(.success, string)
                return
            }
            if (document!.allowsCopying == true && document!.allowsPrinting == true) { // 文件没有权限限制
                callback(.success, string)
                return
            }
            
            // 需要解除权限密码
            KMPasswordInputWindow.openWindow(window: window, type: .owner, url: url) { result, password in
                if (result == .cancel) {
                    callback(.cancel, "")
                    return
                }
                callback(.success, password)
            }
        }

        window.beginSheet(passwordWindow!)
    }
    
    class func saveDocument(_ document: CPDFDocument) -> Bool {
        let toPath = document.documentURL.path
        
        let tempFilePath = NSSearchPathForDirectoriesInDomains(FileManager.SearchPathDirectory.applicationSupportDirectory, FileManager.SearchPathDomainMask.userDomainMask, true).last?.stringByAppendingPathComponent(Bundle.main.bundleIdentifier!).stringByAppendingPathComponent("\((document.documentURL.lastPathComponent))")
        if (FileManager.default.fileExists(atPath: tempFilePath!)) {
            /// 清空数据
            try?FileManager.default.removeItem(atPath: tempFilePath!)
        }
        
        var result: Bool = document.write(to: URL(fileURLWithPath: tempFilePath!))
        if (result == false) {
            return false
        }
        
        try?FileManager.default.removeItem(atPath: toPath)
        result = ((try?FileManager.default.moveItem(atPath: tempFilePath!, toPath: toPath)) != nil)
        /// 清空数据
        try?FileManager.default.removeItem(atPath: tempFilePath!)
        return result
    }
    
    class func saveDocumentForRemovePassword(_ document: CPDFDocument) -> Bool {
        let toPath = document.documentURL.path
        
        let tempFilePath = NSSearchPathForDirectoriesInDomains(FileManager.SearchPathDirectory.applicationSupportDirectory, FileManager.SearchPathDomainMask.userDomainMask, true).last?.stringByAppendingPathComponent(Bundle.main.bundleIdentifier!).stringByAppendingPathComponent("\((document.documentURL.lastPathComponent))")
        if (FileManager.default.fileExists(atPath: tempFilePath!)) {
            /// 清空数据
            try?FileManager.default.removeItem(atPath: tempFilePath!)
        }
        
        var result: Bool = document.writeDecrypt(to: URL(fileURLWithPath: tempFilePath!))
        if (result == false) {
            return false
        }
        
        try?FileManager.default.removeItem(atPath: toPath)
        result = ((try?FileManager.default.moveItem(atPath: tempFilePath!, toPath: toPath)) != nil)
        /// 清空数据
        try?FileManager.default.removeItem(atPath: tempFilePath!)
        return result
    }
}

extension NSOpenPanel {
    /**
     * 打开 NSOpenPanel 窗口(如果文档存在开启密码或者权限密码，则会弹密码输入框)
     * @param window 弹出 NSOpenPanel 的窗口 [可选] [默认为 主窗口]
     * @param needOwner 是否需要限制权限密码(如果存在权限密码，会在解锁后再弹权限密码弹窗(目前未实现)) [可选] [默认为 false]
     * @param callback 回调
     *
     *  默认弹开启密码输入框，needOwner = true 弹权限密码输入框
     */
    class func km_secure_openPanel(window: NSWindow = NSApp.mainWindow!, needOwner: Bool = false, callback:@escaping (URL?, KMPasswordInputWindowResult? , String?)->Void) {
        let panel = NSOpenPanel()
        panel.allowedFileTypes = ["pdf"]
        panel.beginSheetModal(for: window) { response in
            if (response == .cancel) {
                callback(nil, nil, nil)
                return
            }
            
            let document = CPDFDocument(url: panel.url)
            if ((document?.isLocked)! == false) {
                if (document?.isEncrypted == false) {
                    callback(panel.url, nil, nil)
                    return
                }
                
                if (!needOwner) {
                    callback(panel.url, nil, nil)
                    return
                }
                
                KMPasswordInputWindow.openWindow(window: window, type: .owner, url: panel.url!) { result, password in
                    if (result == .cancel) {
                        callback(panel.url, .cancel , nil)
                        return
                    }
                    
                    callback(panel.url, .success , password)
                }
                return
            }
            
            /// 已加锁(开启密码)
            KMPasswordInputWindow.openWindow(window: window, url: panel.url!) { result, password in
                if (result == .cancel) {
                    callback(panel.url, .cancel, nil)
                    return
                }
                
                if (!needOwner) {
                    callback(panel.url, .success, password)
                    return
                }
                
                /// 用户输入的是权限密码
                if (KMPasswordInputWindow.permissionsStatus == .owner) {
                    callback(panel.url, .success ,password)
                    return
                }
                
                /// 用户输入的是开启密码 (无法判断是否还有权限未解密)
                
                /// 还有权限密码未解锁
//                KMPasswordInputWindow.openWindow(window: window, type: .owner, url: panel.url!) { result, password in
//                    if (result == .cancel) {
//                        callback(panel.url, .cancel , nil)
//                        return
//                    }
//
//                    callback(panel.url, .success , password)
//                }
                callback(panel.url, .success ,password)
            }
        }
    }
    
    /**
     * 打开 NSOpenPanel 窗口(如果文档存在开启密码或者权限密码，则会弹密码输入框)
     * @param window 弹出 NSOpenPanel 的窗口 [可选] [默认为 主窗口]
     * @param needOwner 是否需要限制权限密码(如果存在权限密码，会在解锁后再弹权限密码弹窗(目前未实现)) [可选] [默认为 false]
     * @param callback 回调
     *
     *  默认弹开启密码输入框，needOwner = true 弹权限密码输入框
     *  只返回成功的结果, 用户关闭的操作都未回调(如果有需要回调的需求可以使用 km_secure_openPanel 方法)
     */
    class func km_secure_openPanel_success(window: NSWindow = NSApp.mainWindow!, needOwner: Bool = false, callback:@escaping (URL, String?)->Void) {
        let panel = NSOpenPanel()
        panel.allowedFileTypes = ["pdf"]
        panel.beginSheetModal(for: window) { response in
            if (response == .cancel) {
                return
            }
            
            let document = CPDFDocument(url: panel.url)
            if ((document?.isLocked)! == false) {
                if (document?.isEncrypted == false) {
                    callback(panel.url!, nil)
                    return
                }
                
                if (!needOwner) {
                    callback(panel.url!, nil)
                    return
                }
                
                KMPasswordInputWindow.openWindow(window: window, type: .owner, url: panel.url!) { result, password in
                    if (result == .cancel) {
                        return
                    }
                    
                    callback(panel.url!, password)
                }
                return
            }
            
            /// 已加锁(开启密码)
            KMPasswordInputWindow.openWindow(window: window, url: panel.url!) { result, password in
                if (result == .cancel) {
                    return
                }
                
                if (!needOwner) {
                    callback(panel.url!, password)
                    return
                }
                
                /// 用户输入的是权限密码
                if (KMPasswordInputWindow.permissionsStatus == .owner) {
                    callback(panel.url!, password)
                    return
                }
                
                callback(panel.url!, password)
            }
        }
    }
}