//
//  KMLineInspector.swift
//  PDF Reader Pro
//
//  Created by tangchao on 2023/11/10.
//

import Cocoa

enum KMLineChangeAction: Int {
    case no = 0
    case lineWidth
    case style
    case dashPattern
    case startLineStyle
    case endLineStyle
}

@objcMembers class KMLineInspector: NSWindowController {
    private let LINEWIDTH_KEY = "lineWidth"
    private let STYLE_KEY = "style"
    private let DASHPATTERN_KEY = "dashPattern"
    private let STARTLINESTYLE_KEY = "startLineStyle"
    private let ENDLINESTYLE_KEY = "endLineStyle"
    private let ACTION_KEY = "action"
    
    private let SKLineInspectorFrameAutosaveName = "SKLineInspector"
    
    public static let lineAttributeDidChangeNotification = NSNotification.Name("SKLineInspectorLineAttributeDidChangeNotification")
    
    /*
     + (BOOL)sharedLineInspectorExists;
     */
    
    private var _currentLineChangeAction: KMLineChangeAction = .lineWidth
    var currentLineChangeAction: KMLineChangeAction {
        get {
            return self._currentLineChangeAction
        }
    }
    
    @IBOutlet var lineWidthSlider: NSSlider!
    @IBOutlet var lineWidthField: NSTextField!
    @IBOutlet var dashPatternField: NSTextField!
    @IBOutlet var styleButton: NSSegmentedControl!
    @IBOutlet var startLineStyleButton: NSSegmentedControl!
    @IBOutlet var endLineStyleButton: NSSegmentedControl!
    @IBOutlet var lineWidthLabelField: NSTextField!
    @IBOutlet var styleLabelField: NSTextField!
    @IBOutlet var dashPatternLabelField: NSTextField!
    @IBOutlet var startLineStyleLabelField: NSTextField!
    @IBOutlet var endLineStyleLabelField: NSTextField!
    @IBOutlet var lineWell: KMLineWell!

    @IBOutlet weak var labelField1: NSTextField!
    @IBOutlet weak var labelField2: NSTextField!
    @IBOutlet weak var labelField3: NSTextField!
    @IBOutlet weak var labelField4: NSTextField!
    @IBOutlet weak var labelField5: NSTextField!
    
    @IBOutlet weak var LineborderStyleLable: NSTextField!
    @IBOutlet weak var lineEndingStyleLabel: NSTextField!
    
    var labelFields: [NSTextField] = []
    private var _lineWidth: CGFloat = 0
    var lineWidth: CGFloat {
        get {
            return self._lineWidth
        }
        set {
            if (abs(self.lineWidth - newValue) > 0.00001) {
                self._lineWidth = newValue
                self.lineWell?.lineWidth = newValue
                
                self.lineWidthField.stringValue = String(format: "%.0f", self.lineWidth)
                self.lineWidthSlider.doubleValue = self.lineWidth
                self._notifyChangeAction(.lineWidth)
            }
        }
    }
    
    private var _style: Int = CPDFBorderStyle.solid.rawValue
    var style: Int {
        get {
            return self._style
        }
        set {
            if (newValue != self._style) {
                self._style = newValue
                self.lineWell?.style = CPDFBorderStyle(rawValue: newValue) ?? .solid
                self.styleButton.selectedSegment = self.style
                
                self._notifyChangeAction(.style)
            }
        }
    }
    
    private var _startLineStyle: Int = CPDFLineStyle.none.rawValue
    var startLineStyle: Int {
        get {
            return self._startLineStyle
        }
        set {
            if (newValue != self.startLineStyle) {
                self._startLineStyle = newValue
                self.lineWell?.startLineStyle = CPDFLineStyle(rawValue: newValue) ?? .none
                
                self._notifyChangeAction(.startLineStyle)
            }
        }
    }
    
    var _endLineStyle: Int = CPDFLineStyle.none.rawValue
    var endLineStyle: Int {
        get {
            return self._endLineStyle
        }
        set {
            if (newValue != self.endLineStyle) {
                self._endLineStyle = newValue
                self.lineWell?.endLineStyle = CPDFLineStyle(rawValue: newValue) ?? .none
                
                self._notifyChangeAction(.endLineStyle)
            }
        }
    }
    private var _dashPattern: [CGFloat] = []
    var dashPattern: [CGFloat] {
        get {
            return self._dashPattern
        }
        set {
            if newValue != self._dashPattern && (newValue.isEmpty == false || self._dashPattern.isEmpty == false) {
                self._dashPattern = newValue
                
                self.lineWell?.dashPattern = newValue as NSArray
                self.dashPatternField.stringValue = "\(self.dashPattern.count)"
                
                self._notifyChangeAction(.dashPattern)
            } else {
                self._dashPattern = []
                self.lineWell?.dashPattern = newValue as NSArray
                self.dashPatternField.stringValue = "\(self.dashPattern.count)"
                
                self._notifyChangeAction(.dashPattern)
            }
        }
    }
    
    static let shared = KMLineInspector(windowNibName: "LineInspector")
    
    override func windowDidLoad() {
        super.windowDidLoad()
        
        self._initDefalutValue()
        self._initLayoutUI()
        self._initValues()
        self._initActions()
        
        self._initStyleImages()
        self._initStartImages()
        self._initEndImages()
    }
    
    private func _initLayoutUI() {
        let dw = KMAutoSizeLabelFields(labelFields, [lineWidthSlider, lineWidthField, styleButton, dashPatternField, startLineStyleButton, endLineStyleButton], false)
        if (abs(dw) > 0.0) {
            KMResizeWindow(self.window!, dw)
        }
    }
    
    private func _initDefalutValue() {
        self.window?.title = NSLocalizedString("Lines", comment: "")
        
        self.styleButton.setHelp(KMLocalizedString("Solid line style", "Tool tip message"), for: CPDFBorderStyle.solid.rawValue)
        self.styleButton.setHelp(KMLocalizedString("Dashed line style", "Tool tip message"), for: CPDFBorderStyle.dashed.rawValue)
        self.styleButton.setHelp(KMLocalizedString("Beveled line style", "Tool tip message"), for: CPDFBorderStyle.beveled.rawValue)
        self.styleButton.setHelp(KMLocalizedString("Inset line style", "Tool tip message"), for: CPDFBorderStyle.inset.rawValue)
        self.styleButton.setHelp(KMLocalizedString("Underline line style", "Tool tip message"), for: CPDFBorderStyle.underline.rawValue)

        self.startLineStyleButton.setHelp(KMLocalizedString("No start line style", "Tool tip message"), for: CPDFLineStyle.none.rawValue)
        self.startLineStyleButton.setHelp(KMLocalizedString("Square start line style", "Tool tip message"), for: CPDFLineStyle.square.rawValue)
        self.startLineStyleButton.setHelp(KMLocalizedString("Circle start line style", "Tool tip message"), for: CPDFLineStyle.circle.rawValue)
        self.startLineStyleButton.setHelp(KMLocalizedString("Diamond start line style", "Tool tip message"), for: CPDFLineStyle.diamond.rawValue)
        self.startLineStyleButton.setHelp(KMLocalizedString("Open arrow start line style", "Tool tip message"), for: CPDFLineStyle.openArrow.rawValue)
        self.startLineStyleButton.setHelp(KMLocalizedString("Closed arrow start line style", "Tool tip message"), for: CPDFLineStyle.closedArrow.rawValue)

        self.endLineStyleButton.setHelp(KMLocalizedString("No end line style", "Tool tip message"), for: CPDFLineStyle.none.rawValue)
        self.endLineStyleButton.setHelp(KMLocalizedString("Square end line style", "Tool tip message"), for: CPDFLineStyle.square.rawValue)
        self.endLineStyleButton.setHelp(KMLocalizedString("Circle end line style", "Tool tip message"), for: CPDFLineStyle.circle.rawValue)
        self.endLineStyleButton.setHelp(KMLocalizedString("Diamond end line style", "Tool tip message"), for: CPDFLineStyle.diamond.rawValue)
        self.endLineStyleButton.setHelp(KMLocalizedString("Open arrow end line style", "Tool tip message"), for: CPDFLineStyle.openArrow.rawValue)
        self.endLineStyleButton.setHelp(KMLocalizedString("Closed arrow end line style", "Tool tip message"), for: CPDFLineStyle.closedArrow.rawValue)
        
        self.LineborderStyleLable.stringValue = NSLocalizedString("Line and Border Style", comment: "")
        self.lineEndingStyleLabel.stringValue = NSLocalizedString("Line Ending Style", comment: "")
        self.lineWidthLabelField.stringValue = NSLocalizedString("Line Width:", comment: "")
        self.styleLabelField.stringValue = NSLocalizedString("Line Style:", comment: "")
        self.dashPatternLabelField.stringValue = NSLocalizedString("Dash Pattern:", comment: "")
        self.startLineStyleLabelField.stringValue = NSLocalizedString("Start:", comment: "")
        self.endLineStyleLabelField.stringValue = NSLocalizedString("End:", comment: "")
        
        self.windowFrameAutosaveName = SKLineInspectorFrameAutosaveName
        self._currentLineChangeAction = .no
        
        self.lineWidthField.formatter = NumberFormatter()
        self.dashPatternField.formatter = NumberFormatter()
    }
    
    private func _initValues() {
        self.labelFields = [self.labelField1, self.labelField2, self.labelField3, self.labelField4, self.labelField5]
        
        self.lineWell.canActivate = false
        self.lineWell.lineWidth = self.lineWidth
        self.lineWell.style = CPDFBorderStyle(rawValue: self.style) ?? .solid
        self.lineWell.dashPattern = self.dashPattern as NSArray
        self.lineWell.startLineStyle = CPDFLineStyle(rawValue: self.startLineStyle) ?? .none
        self.lineWell.endLineStyle = CPDFLineStyle(rawValue: self.endLineStyle) ?? .none
        
        self.lineWidthSlider.floatValue = Float(self.lineWidth)
        self.lineWidthField.stringValue = "\(self.lineWidth)"
        self.styleButton.selectedSegment = self.style
        self.dashPatternField.stringValue = "\(self.dashPattern.count)"
        self.startLineStyleButton.selectedSegment = self.startLineStyle
        self.endLineStyleButton.selectedSegment = self.endLineStyle
    }
    
    private func _initActions() {
        self.lineWidthSlider.target = self
        self.lineWidthSlider.action = #selector(lineWidthSliderAction)
        self.styleButton.target = self
        self.styleButton.action = #selector(styleAction)
        self.startLineStyleButton.target = self
        self.startLineStyleButton.action = #selector(startLineStyleAction)
        self.endLineStyleButton.target = self
        self.endLineStyleButton.action = #selector(endLineStyleAction)
        self.lineWidthField.delegate = self
        self.dashPatternField.delegate = self
    }
    
    private func _initStyleImages() {
        var image: NSImage?
        var size = NSMakeSize(29.0, 12.0)
        image = NSImage.image(with: size, drawingHandler: { rect in
            let path = NSBezierPath(rect: NSMakeRect(6.0, 3.0, 17.0, 6.0))
            path.lineWidth = 2.0
            NSColor.black.setStroke()
            path.stroke()
            return true
        })
        self.styleButton.setImage(image, forSegment: CPDFBorderStyle.solid.rawValue)
        
        image = NSImage.image(with: size, drawingHandler: { dstRect in
            let path = NSBezierPath()
            path.move(to: NSMakePoint(6.0, 5.0))
            path.line(to: NSMakePoint(6.0, 3.0))
            path.line(to: NSMakePoint(9.0, 3.0))
            path.move(to: NSMakePoint(12.0, 3.0))
            path.line(to: NSMakePoint(17.0, 3.0))
            path.move(to: NSMakePoint(20.0, 3.0))
            path.line(to: NSMakePoint(23.0, 3.0))
            path.line(to: NSMakePoint(23.0, 5.0))
            path.move(to: NSMakePoint(23.0, 7.0))
            path.line(to: NSMakePoint(23.0, 9.0))
            path.line(to: NSMakePoint(20.0, 9.0))
            path.move(to: NSMakePoint(17.0, 9.0))
            path.line(to: NSMakePoint(12.0, 9.0))
            path.move(to: NSMakePoint(9.0, 9.0))
            path.line(to: NSMakePoint(6.0, 9.0))
            path.line(to: NSMakePoint(6.0, 7.0))
            path.lineWidth = 2.0
            NSColor.black.setStroke()
            path.stroke()
            return true
        })
        self.styleButton.setImage(image, forSegment: CPDFBorderStyle.dashed.rawValue)
        
        image = NSImage.image(with: size, drawingHandler: { dstRect in
            var path = NSBezierPath(rect: NSMakeRect(6.0, 3.0, 17.0, 6.0))
            path.lineWidth = 2.0
            NSColor(calibratedWhite: 0, alpha: 0.25).setStroke()
            path.stroke()
            path = NSBezierPath()
            path.move(to: NSMakePoint(7.0, 3.0))
            path.line(to: NSMakePoint(23.0, 3.0))
            path.line(to: NSMakePoint(23.0, 8.0))
            path.lineWidth = 2.0
            NSColor(calibratedWhite: 0, alpha: 0.35).set()
            path.stroke()
            path = NSBezierPath()
            path.move(to: NSMakePoint(5.0, 2.0))
            path.line(to: NSMakePoint(7.0, 4.0))
            path.line(to: NSMakePoint(7.0, 2.0))
            path.close()
            path.move(to: NSMakePoint(24.0, 10.0))
            path.line(to: NSMakePoint(22.0, 8.0))
            path.line(to: NSMakePoint(24.0, 8.0))
            path.close()
            path.fill()
            return true
        })
        self.styleButton.setImage(image, forSegment: CPDFBorderStyle.beveled.rawValue)
        
        image = NSImage.image(with: size, drawingHandler: { dstRect in
            var path = NSBezierPath(rect: NSMakeRect(6.0, 3.0, 17.0, 6.0))
            path.lineWidth = 2.0
            NSColor(calibratedWhite: 0, alpha: 0.25).setStroke()
            path.stroke()
            path = NSBezierPath()
            path.move(to: NSMakePoint(6.0, 4.0))
            path.line(to: NSMakePoint(6.0, 9.0))
            path.line(to: NSMakePoint(22.0, 9.0))
            path.lineWidth = 2.0
            NSColor(calibratedWhite: 0, alpha: 0.35).set()
            path.stroke()
            path = NSBezierPath()
            path.move(to: NSMakePoint(5.0, 2.0))
            path.line(to: NSMakePoint(7.0, 4.0))
            path.line(to: NSMakePoint(5.0, 4.0))
            path.close()
            path.move(to: NSMakePoint(24.0, 10.0))
            path.line(to: NSMakePoint(22.0, 8.0))
            path.line(to: NSMakePoint(22.0, 10.0))
            path.close()
            path.fill()
            return true
        })
        self.styleButton.setImage(image, forSegment: CPDFBorderStyle.inset.rawValue)

        image = NSImage.image(with: size, drawingHandler: { dstRect in
            let path = NSBezierPath()
            path.move(to: NSMakePoint(6.0, 3.0))
            path.line(to: NSMakePoint(23.0, 3.0))
            path.lineWidth = 2.0
            NSColor(calibratedWhite: 0, alpha: 0.5).setStroke()
            path.stroke()
            return true
        })
        self.styleButton.setImage(image, forSegment: CPDFBorderStyle.underline.rawValue)
    }
    
    private func _initStartImages() {
        var image: NSImage?
        var size = NSMakeSize(24.0, 12.0)
        image = NSImage.image(with: size, drawingHandler: { dstRect in
            let path = NSBezierPath()
            path.move(to: NSMakePoint(20.0, 6.0))
            path.line(to: NSMakePoint(8.0, 6.0))
            path.lineWidth = 2.0
            NSColor.black.setStroke()
            path.stroke()
            return true
        })
        self.startLineStyleButton.setImage(image, forSegment: CPDFLineStyle.none.rawValue)
        
        image = NSImage.image(with: size, drawingHandler: { rect in
            let path = NSBezierPath()
            path.move(to: NSMakePoint(20.0, 6.0))
            path.line(to: NSMakePoint(8.0, 6.0))
            path.appendRect(NSMakeRect(5.0, 3.0, 6.0, 6.0))
            path.lineWidth = 2.0
            NSColor.black.setStroke()
            path.stroke()
            return true
        })
        // CPDFLineStyle.square.rawValue
        self.startLineStyleButton.setImage(image, forSegment: 1)
        
        image = NSImage.image(with: size, drawingHandler: { dstRect in
            let path = NSBezierPath()
            path.move(to: NSMakePoint(20.0, 6.0))
            path.line(to: NSMakePoint(8.0, 6.0))
            path.appendOval(in: NSMakeRect(5.0, 3.0, 6.0, 6.0))
            path.lineWidth = 2.0
            NSColor.black.setStroke()
            path.stroke()
            return true
        })
        // CPDFLineStyle.circle.rawValue
        self.startLineStyleButton.setImage(image, forSegment: 2)
        
        image = NSImage.image(with: size, drawingHandler: { dstRect in
            let path = NSBezierPath()
            path.move(to: NSMakePoint(20.0, 6.0))
            path.line(to: NSMakePoint(8.0, 6.0))
            path.move(to: NSMakePoint(12.0, 6.0))
            path.line(to: NSMakePoint(8.0, 10.0))
            path.line(to: NSMakePoint(4.0, 6.0))
            path.line(to: NSMakePoint(8.0, 2.0))
            path.close()
            path.lineWidth = 2.0
            path.stroke()
            return true
        })
        // CPDFLineStyle.diamond.rawValue
        self.startLineStyleButton.setImage(image, forSegment: 3)
        
        image = NSImage.image(with: size, drawingHandler: { dstRect in
            let path = NSBezierPath()
            path.move(to: NSMakePoint(20.0, 6.0))
            path.line(to: NSMakePoint(8.0, 6.0))
            path.move(to: NSMakePoint(14.0, 3.0))
            path.line(to: NSMakePoint(8.0, 6.0))
            path.line(to: NSMakePoint(14.0, 9.0))
            path.lineWidth = 2.0
            NSColor.black.setStroke()
            path.stroke()
            return true
        })
        // CPDFLineStyle.openArrow.rawValue
        self.startLineStyleButton.setImage(image, forSegment: 4)
        
        image = NSImage.image(with: size, drawingHandler: { dstRect in
            let path = NSBezierPath()
            path.move(to: NSMakePoint(20.0, 6.0))
            path.line(to: NSMakePoint(8.0, 6.0))
            path.move(to: NSMakePoint(14.0, 3.0))
            path.line(to: NSMakePoint(8.0, 6.0))
            path.line(to: NSMakePoint(14.0, 9.0))
            path.close()
            path.lineWidth = 2
            NSColor.black.setStroke()
            path.stroke()
            return true
        })
        // CPDFLineStyle.closedArrow.rawValue
        self.startLineStyleButton.setImage(image, forSegment: 5)
    }
    
    private func _initEndImages() {
        var image: NSImage?
        var size = NSMakeSize(24.0, 12.0)
        image = NSImage.image(with: size, drawingHandler: { dstRect in
            let path = NSBezierPath()
            path.move(to: NSMakePoint(4.0, 6.0))
            path.line(to: NSMakePoint(16.0, 6.0))
            path.lineWidth = 2.0
            NSColor.black.setStroke()
            path.stroke()
            return true
        })
        self.endLineStyleButton.setImage(image, forSegment: CPDFLineStyle.none.rawValue)

        image = NSImage.image(with: size, drawingHandler: { dstRect in
            let path = NSBezierPath()
            path.move(to: NSMakePoint(4.0, 6.0))
            path.line(to: NSMakePoint(16.0, 6.0))
            path.appendRect(NSMakeRect(13.0, 3.0, 6.0, 6.0))
            path.lineWidth = 2.0
            NSColor.black.setStroke()
            path.stroke()
            return true
        })
        // CPDFLineStyle.square.rawValue
        self.endLineStyleButton.setImage(image, forSegment: 1)
        
        image = NSImage.image(with: size, drawingHandler: { dstRect in
            let path = NSBezierPath()
            path.move(to: NSMakePoint(4.0, 6.0))
            path.line(to: NSMakePoint(16.0, 6.0))
            path.appendOval(in: NSMakeRect(13.0, 3.0, 6.0, 6.0))
            path.lineWidth = 2.0
            NSColor.black.setStroke()
            path.stroke()
            return true
        })
        // CPDFLineStyle.circle.rawValue
        self.endLineStyleButton.setImage(image, forSegment: 2)
        
        image = NSImage.image(with: size, drawingHandler: { dstRect in
            let path = NSBezierPath()
            path.move(to: NSMakePoint(4.0, 6.0))
            path.line(to: NSMakePoint(16.0, 6.0))
            path.move(to: NSMakePoint(12.0, 6.0))
            path.line(to: NSMakePoint(16.0, 10.0))
            path.line(to: NSMakePoint(20.0, 6.0))
            path.line(to: NSMakePoint(16.0, 2.0))
            path.close()
            path.lineWidth = 2.0
            path.stroke()
            return true
        })
        // CPDFLineStyle.diamond.rawValue
        self.endLineStyleButton.setImage(image, forSegment: 3)
        
        image = NSImage.image(with: size, drawingHandler: { dstRect in
            let path = NSBezierPath()
            path.move(to: NSMakePoint(4.0, 6.0))
            path.line(to: NSMakePoint(16.0, 6.0))
            path.move(to: NSMakePoint(10.0, 3.0))
            path.line(to: NSMakePoint(16.0, 6.0))
            path.line(to: NSMakePoint(10.0, 9.0))
            path.lineWidth = 2
            NSColor.black.setStroke()
            path.stroke()
            return true
        })
        // CPDFLineStyle.openArrow.rawValue
        self.endLineStyleButton.setImage(image, forSegment: 4)
        
        image = NSImage.image(with: size, drawingHandler: { dstRect in
            let path = NSBezierPath()
            path.move(to: NSMakePoint(4.0, 6.0))
            path.line(to: NSMakePoint(16.0, 6.0))
            path.move(to: NSMakePoint(10.0, 3.0))
            path.line(to: NSMakePoint(16.0, 6.0))
            path.line(to: NSMakePoint(10.0, 9.0))
            path.close()
            path.lineWidth = 2
            NSColor.black.setStroke()
            path.stroke()
            return true
        })
        // CPDFLineStyle.closedArrow.rawValue
        self.endLineStyleButton.setImage(image, forSegment: 5)
    }
    
    override func setNilValueForKey(_ key: String) {
        if key == LINEWIDTH_KEY {
            self.setValue(0.0, forKey: key)
        } else if key == STYLE_KEY || key == STARTLINESTYLE_KEY || key == ENDLINESTYLE_KEY {
            self.setValue(0, forKey: key)
        } else {
            super.setNilValueForKey(key)
        }
     }
    
    override func value(forUndefinedKey key: String) -> Any? {
        KMPrint("forUndefinedKey: \(key)")
    }

    func setAnnotationStyle(_ annotation: CPDFAnnotation) {
        let type = annotation.type
        if type == SKNFreeTextString || type == CPDFAnnotation.kCircleType || type == CPDFAnnotation.kSquareType  || type == CPDFAnnotation.kArrowType || type == CPDFAnnotation.kLineType || type == SKNInkString {
            if let model = CPDFAnnotationModel(pdfAnnotations: [annotation]) {
                self.lineWidth = model.lineWidth()
                self.style = model.style().rawValue
                self.dashPattern = model.dashPattern() as? [CGFloat] ?? []
            }
        }
        
        if type == CPDFAnnotation.kArrowType || type == CPDFAnnotation.kLineType {
            if let anno = annotation as? CPDFLineAnnotation {
                self.startLineStyle = anno.startLineStyle.rawValue
                self.endLineStyle = anno.endLineStyle.rawValue
            }
        }
    }
    
    // MARK: - Actions
    
    @objc func lineWidthSliderAction(_ sender: NSSlider) {
        self.lineWidth = sender.floatValue.cgFloat
    }
    
    @objc func styleAction(_ sender: NSSegmentedControl) {
        self.style = sender.selectedSegment
    }
    
    @objc func startLineStyleAction(_ sender: NSSegmentedControl) {
        let index = sender.selectedSegment
        if index == 0 {
            self.startLineStyle = CPDFLineStyle.none.rawValue
        } else if index == 1 {
            self.startLineStyle = CPDFLineStyle.square.rawValue
        } else if index == 2 {
            self.startLineStyle = CPDFLineStyle.circle.rawValue
        } else if index == 3 {
            self.startLineStyle = CPDFLineStyle.diamond.rawValue
        } else if index == 4 {
            self.startLineStyle = CPDFLineStyle.openArrow.rawValue
        } else if index == 5 {
            self.startLineStyle = CPDFLineStyle.closedArrow.rawValue
        }
    }
    
    @objc func endLineStyleAction(_ sender: NSSegmentedControl) {
        let index = sender.selectedSegment
        if index == 0 {
            self.endLineStyle = CPDFLineStyle.none.rawValue
        } else if index == 1 {
            self.endLineStyle = CPDFLineStyle.square.rawValue
        } else if index == 2 {
            self.endLineStyle = CPDFLineStyle.circle.rawValue
        } else if index == 3 {
            self.endLineStyle = CPDFLineStyle.diamond.rawValue
        } else if index == 4 {
            self.endLineStyle = CPDFLineStyle.openArrow.rawValue
        } else if index == 5 {
            self.endLineStyle = CPDFLineStyle.closedArrow.rawValue
        }
    }
}

// MARK: - Private Methods

extension KMLineInspector {
    private func _notifyChangeAction(_ action: KMLineChangeAction) {
        self._currentLineChangeAction = action
        
        let selector = NSSelectorFromString("changeLineAttribute:")
        let mainWindow = NSApp.mainWindow
        var responder = mainWindow?.firstResponder
        
        while (responder != nil && responder!.responds(to: selector) == false) {
            responder = responder!.nextResponder
        }
        responder?.perform(selector, with: self)
        
        let userInfo = [ACTION_KEY : NSNumber(value: action.rawValue)]
        NotificationCenter.default.post(name: Self.lineAttributeDidChangeNotification, object: self, userInfo: userInfo)
        
        self._currentLineChangeAction = .no
    }
}

extension KMLineInspector: NSTextFieldDelegate {
    func controlTextDidChange(_ obj: Notification) {
        if self.lineWidthField.isEqual(to: obj.object) {
            let value = self.lineWidthField.doubleValue
            if value < self.lineWidthSlider.minValue {
                self.lineWidth = self.lineWidthSlider.minValue
            } else if value > self.lineWidthSlider.maxValue {
                self.lineWidth = self.lineWidthSlider.maxValue
            } else {
                self.lineWidth = value
            }
        } else if self.dashPatternField.isEqual(to: obj.object) {
            let cnt = self.dashPatternField.integerValue
            let data = [CGFloat](repeating: 3.0, count: cnt)
            self.dashPattern = data
        }
    }
}