//
//  KMRedactPDFView.swift
//  PDF Reader Pro
//
//  Created by tangchao on 2023/12/18.
//

import Cocoa

enum KMPDFRedactViewOperationType: Int {
    case none = 0 //没有进入任何模式
    case redact //标记密文模式
    case editText //文本编辑
    case redactWhite //密文标记涂白模式
}


private let KMPDFViewShowCurrentRedactAnnotation = "KMPDFViewShowCurrentRedactAnnotation"
private let KMPDFViewRedactAnnotationApply = "KMPDFViewRedactAnnotationApply"
private let KMPDFViewRedactAnnotationAcross = "KMPDFViewRedactAnnotationAcross"

class KMPDFWhiteOutRedactAnnotation: CPDFRedactAnnotation {
    
}

@objcMembers class KMRedactPDFView: CPDFListView {
    
    private let MIN_NOTE_SIZE: CGFloat = 8.0
    
    static let showCurrentRedactAnnotationNotificationName = Notification.Name(KMPDFViewShowCurrentRedactAnnotation)
    static let redactAnnotationApplyNotificationName = Notification.Name(KMPDFViewRedactAnnotationApply)
    static let redactAnnotationAcrossNotificationName = Notification.Name(KMPDFViewRedactAnnotationAcross)
    
    var mouseMoveAnnotation: CPDFAnnotation?
    var currentAnnotation: CPDFRedactAnnotation?
    var newAddAnnotation: [CPDFAnnotation] = []
//    var activeAnnotations: [CPDFAnnotation] = []
    
    var operationType: KMPDFRedactViewOperationType = .none
    
    var isEidtImageModel = false
    var isEidtTextModel = false
    
    var isWhiteOut = false
    
    var eventColorChanged: ((NSColor)->Void)?
    var eventFontChanged: (()->Void)?
    var exportBtnTaped: ((Int)->Void)?
    
    private var _localMonitor: AnyObject?

    override init(frame frameRect: NSRect) {
        super.init(frame: frameRect)
        
        self.operationType = .none
        self.addTrackingArea()
        self.initMonitor()
    }
    
    required init?(coder: NSCoder) {
        super.init(coder: coder)
        
        self.operationType = .none
        self.addTrackingArea()
        self.initMonitor()
    }
    
    override func draw(_ dirtyRect: NSRect) {
        super.draw(dirtyRect)

        // Drawing code here.
    }
    
    func resignMonitor() {
        if let monitor = self._localMonitor {
            NSEvent.removeMonitor(monitor)
            self._localMonitor = nil
        }
    }

    func addTrackingArea() {
        self.newAddAnnotation = []
        self.activeAnnotations = []
        let trackingArea = NSTrackingArea(rect: self.bounds, options: [.mouseEnteredAndExited, .inVisibleRect, .activeInKeyWindow], owner: self)
        self.addTrackingArea(trackingArea)
     }
    func initMonitor() {
        let mask: NSEvent.EventTypeMask = .keyDown

        guard _localMonitor == nil else { return }
        
        _localMonitor = NSEvent.addLocalMonitorForEvents(matching: mask) { event in
            // 获取事件的第一个字符
            let eventChar = event.PDFListViewFirstCharacter()
            // 获取标准的修饰符标志
            let modifiers = Self.standardPDFListViewModifierFlags()
            
            // 获取当前响应者
            if let currentResponder = NSApp.keyWindow?.firstResponder, !(currentResponder is NSTextView) {
                // 如果按下的是删除键，并且没有修饰符，则执行删除操作
                if (eventChar == NSDeleteCharacter || eventChar == NSDeleteFunctionKey), modifiers == 0 {
                    self.delete()
                }
                
                // 如果按下的是回车键，并且没有修饰符，则执行图像裁剪完成操作
                if event.keyCode == 36, modifiers == 0 {
                    self.corpImageDoneWithEnter()
                }
            }
            
            // 返回事件以继续处理
            return event
        } as AnyObject?
    }
    
    override func menu(for event: NSEvent) -> NSMenu? {
        var menu = super.menu(for: event)
//        if (menu == nil) {
            menu = NSMenu()
//        }
        var pagePoint = NSZeroPoint
//        CPDFPage *page = [self pageAndPoint:&pagePoint forEvent:event nearest:YES];
        let page = self.pageAndPoint(&pagePoint, for: event, nearest: true)
//        CPDFAnnotation *annotation = [page annotationAtPoint:pagePoint];
        let annotation = page?.annotation(at: pagePoint)
        if let data = annotation, data is CPDFRedactAnnotation && (self.operationType == .redact || self.operationType == .redactWhite)  {
            var item = menu?.insertItem(withTitle: KMLocalizedString("Delete", nil), action: #selector(deleteAnnotation), target: self, at: 0)
            item?.representedObject = annotation
            menu?.insertItem(.separator(), at: 1)
            item = menu?.insertItem(withTitle: KMLocalizedString("Make Current Properties Default", nil), action: #selector(setPropertiesDefault), target: self, at: 2)
            item?.representedObject = annotation
            
            _ = menu?.insertItem(withTitle: KMLocalizedString("Properties", nil), action: #selector(properties), target: self, at: 3)
            menu?.insertItem(.separator(), at: 4)
            _ = menu?.insertItem(withTitle: KMLocalizedString("Repeat Mark Across Pages", nil), action: #selector(repeatMark), target: self, at: 5)
            _ = menu?.insertItem(withTitle: KMLocalizedString("Apply Redactions", nil), action: #selector(applyRedact), target: self, at: 6)
            self.currentAnnotation = annotation as? CPDFRedactAnnotation
        }
        return menu
    }
    
    @objc func deleteAnnotation(_ sender: NSMenuItem?) {
        if let annotation = sender?.representedObject as? CPDFRedactAnnotation {
            self.remove(annotation)
//            removeAnnotation(annotation: annotation)
        }
    }
    
    func removeAnnotation(annotation: CPDFAnnotation) {
        let annos = NSMutableArray()
        annos.add(annotation)
        removeAccosAnnotations(annos)
    }
    
    @objc func setPropertiesDefault(_ sender: NSMenuItem?) {
        if let annotation = sender?.representedObject as? CPDFRedactAnnotation {
            KMPDFAnnotationRedactConfig.shared.redactOutlineColor = annotation.borderColor()
            KMPDFAnnotationRedactConfig.shared.redactFillColor = annotation.interiorColor()
            KMPDFAnnotationRedactConfig.shared.redactFontColor = annotation.fontColor()
            KMPDFAnnotationRedactConfig.shared.overlayText = annotation.overlayText().isEmpty == false
            KMPDFAnnotationRedactConfig.shared.fontSize = Int(annotation.font().pointSize)
            if annotation.alignment() == .left {
                KMPDFAnnotationRedactConfig.shared.textAlignment = 0
            } else if annotation.alignment() == .center {
                KMPDFAnnotationRedactConfig.shared.textAlignment = 1
            } else if annotation.alignment() == .right {
                KMPDFAnnotationRedactConfig.shared.textAlignment = 2
            }
            KMPDFAnnotationRedactConfig.shared.overlayTextString = annotation.overlayText()
        }
    }
    
    @objc func properties() {
        NotificationCenter.default.post(name: Self.showCurrentRedactAnnotationNotificationName, object: self)
    }
    
    @objc func repeatMark() {
        NotificationCenter.default.post(name: Self.redactAnnotationAcrossNotificationName, object: self)
    }
    
    @objc func applyRedact() {
        NotificationCenter.default.post(name: Self.redactAnnotationApplyNotificationName, object: self)
    }
    
    
    /*

     - (CGSize)getWidthFromText:(NSString *)text WithSize:(NSFont *)font AboutWidth:(CGFloat)width AndHeight:(CGFloat)height
     {
        if (!text) {
            return CGSizeMake(0, 0);
        }
        CGRect rect = [text boundingRectWithSize:CGSizeMake(width, height) options:NSStringDrawingUsesLineFragmentOrigin attributes:@{NSFontAttributeName:font} context:nil];
        return rect.size;
     }

     */
    
    override func menuItemsEditing(at point: CGPoint, for page: CPDFPage!) -> [NSMenuItem]! {
        var menuItems = super.menuItemsEditing(at: point, for: page)
        if (menuItems == nil) {
            menuItems = []
        }
        if self.isSelectEditCharRange() || self.isSelecteditArea(with: point) {
            menuItems?.insert(.separator(), at: 0)
            menuItems?.insert(self.fontColorMenuItem(), at: 0)
            menuItems?.insert(self.fontSizeMenuItem(), at: 0)
        }
        
        if self.editingArea() != nil {
            if self.editingArea().isImageArea() {
                menuItems?.insert(.separator(), at: 0)
//    //            [menuItems insertObject:[self imageCutMenuItem] atIndex:0];
//    //            [menuItems insertObject:[self imagePasteMenuItem] atIndex:0];
//                [menuItems insertObject:[self imageRotateMenuItem] atIndex:0];
                menuItems?.insert(self.imageExportMenuItem(), at: 0)
            }
        }
        return menuItems
    }
    // MARK: - keyDown
    
    override func mouseMoved(with event: NSEvent) {
        self.window?.mouseMoved(with: event)
        super.mouseMoved(with: event)
        
        var continueAction = false
        if(self.operationType == .redact ||
           self.operationType == .redactWhite) {
            continueAction = true
        }
        if continueAction == false {
            return
        }
        
        var pagePoint = NSZeroPoint
        var page = self.pageAndPoint(&pagePoint, for: event, nearest: true)
        var fromView: NSView?
        let newpoint = self.convert(event.locationInWindow, from: fromView)
        let area = self.areaOfInterest(for: newpoint)
        if area.contains(.textArea) {
            NSCursor.iBeam.set()
        }else{
            NSCursor.arrow.set()
        }
        let newActiveAnnotation = page?.annotation(at: pagePoint)
        if newActiveAnnotation != nil && newActiveAnnotation is CPDFRedactAnnotation && self.mouseMoveAnnotation == newActiveAnnotation {
//            if newActiveAnnotation is KMPDFWhiteOutRedactAnnotation {
//
//            } else {
                (newActiveAnnotation as? CPDFRedactAnnotation)?.drawRedactionsAsRedacted = true
//            }
            self.setNeedsDisplayAnnotationViewFor(page)
        } else if self.mouseMoveAnnotation != nil && self.mouseMoveAnnotation is CPDFRedactAnnotation {
//            if self.mouseMoveAnnotation is KMPDFWhiteOutRedactAnnotation {
//
//            } else {
                (self.mouseMoveAnnotation as? CPDFRedactAnnotation)?.drawRedactionsAsRedacted = false
//            }
            self.setNeedsDisplayAnnotationViewFor(page)
        }
        self.mouseMoveAnnotation = newActiveAnnotation
    }
    
    override func mouseDown(with event: NSEvent) {
        var pagePoint = NSZeroPoint
        var continueAction = false
        if(self.operationType == .redact ||
           self.operationType == .redactWhite) {
            continueAction = true
        }
        if continueAction == false {
            return
        }
        var page = self.pageAndPoint(&pagePoint, for: event, nearest: true)
        let newActiveAnnotation = page?.annotation(at: pagePoint)
        var fromView: NSView?
        let newpoint = self.convert(event.locationInWindow, from: fromView)
        let area = self.areaOfInterest(for: newpoint)
        self.activeAnnotations.removeAllObjects() //预留
        if(newActiveAnnotation != nil) {
            if self.activeAnnotations.contains(newActiveAnnotation!) == false {
                self.activeAnnotations.add(newActiveAnnotation!)
            }
            self.setNeedsDisplayAnnotationViewFor(page)
            _ = self.doDragMouse(event: event)
        } else if area.contains(.textArea) {
            super.mouseDown(with: event)
            self.doMarkUp(event: event)
            self.currentSelection = nil
        } else {
            self.doRedact(event: event)
        }
    }

    func delete() {
        for anno in self.activeAnnotations {
            if anno is CPDFRedactAnnotation {
                self.remove(anno as? CPDFAnnotation)
            }
         }
     }

    func corpImageDoneWithEnter() {
//         if([self.editingArea isKindOfClass:[CPDFEditImageArea class]]) {
//             CPDFEditImageArea *editImageArea = (CPDFEditImageArea *)self.editingArea;
//             if(editImageArea.isCropMode) {
//                 [self cropEditImageArea:editImageArea withBounds:editImageArea.cropRect];
//                 [self exitCropWithEditImageArea:editImageArea];
//             }
//         }
     }
    
    // MARK: - Rendering
    
    func doDragMouse(event: NSEvent) -> Bool {
        var didDrag = false
        while (true) {
            if self.window?.nextEvent(matching: [.leftMouseUp, .leftMouseDragged])?.type == .leftMouseUp {
                break
            }
            didDrag = true
        }
        return didDrag
    }
    
    func doMarkUp(event: NSEvent) {
        let eventMask: NSEvent.EventTypeMask = [.leftMouseUp, .leftMouseDragged]
        
        var theEvent: NSEvent = event
        while (true) {
            theEvent = self.window!.nextEvent(matching: eventMask)!
            if theEvent.type == .leftMouseUp {
                if (self.currentSelection != nil) {
                    let page = self.currentSelection.page
                    var annotation = self.addRedactPDFSelection(self.currentSelection)
//                    if self.isWhiteOut {
//                        annotation = self.addWhiteRedactPDFSelection(self.currentSelection)
//                    }
                    annotation?.setModificationDate(Date())
                    let userName = KMPreference.shared.author
                    annotation?.setUserName(userName)
                    
                    annotation?.borderWidth = 1
                    if self.operationType == .redact {
                        annotation?.setBorderColor(KMPDFAnnotationRedactConfig.shared.redactOutlineColor)
                        annotation?.setInteriorColor(KMPDFAnnotationRedactConfig.shared.redactFillColor)
                        annotation?.setFontColor(KMPDFAnnotationRedactConfig.shared.redactFontColor)
                        if KMPDFAnnotationRedactConfig.shared.overlayText {
                            if KMPDFAnnotationRedactConfig.shared.textAlignment == 0 {
                                annotation?.setAlignment(.left)
                            } else if KMPDFAnnotationRedactConfig.shared.textAlignment == 1 {
                                annotation?.setAlignment(.center)
                            } else if KMPDFAnnotationRedactConfig.shared.textAlignment == 2 {
                                annotation?.setAlignment(.right)
                            }
                            let font = NSFont(name: "Helvetica", size: KMPDFAnnotationRedactConfig.shared.fontSize.cgFloat)
                            annotation?.setFont(font)
                            annotation?.setOverlayText(KMPDFAnnotationRedactConfig.shared.overlayTextString)
                        }
                    } else if self.operationType == .redactWhite {
                        annotation?.setBorderColor(NSColor.red)
                        annotation?.setInteriorColor(NSColor.white)
                        annotation?.setFontColor(NSColor.white)
                    }
                    self.addAnnotation(with: annotation, to: page)
                    self.newAddAnnotation.append(annotation!)
                    self.setNeedsDisplayFor(page)
                }
                break
            } else if theEvent.type == .leftMouseDragged {
                super.mouseDragged(with: theEvent)
            }
        }
    }
    
    func doRedact(event: NSEvent) {
        var point = NSZeroPoint
        let page = self.pageAndPoint(&point, for: event, nearest: true)
        let wasMouseCoalescingEnabled = NSEvent.isMouseCoalescingEnabled

        let window = self.window
        var bezierPath: NSBezierPath?
        var layer: CAShapeLayer?
        
        let boxBounds = page?.bounds ?? .zero
        let t = CGAffineTransform(scaleX: self.scaleFactor, y: self.scaleFactor).rotated(by: -Double.pi * 0.5 * (page!.rotation.cgFloat / 90.0))
        layer = CAShapeLayer()
        layer?.bounds = NSRectToCGRect(boxBounds)
        layer?.anchorPoint = .zero
        let posi = self.convert(boxBounds.origin, from: page)
        layer?.position = NSPointToCGPoint(posi)
        layer?.setAffineTransform(t)
        layer?.zPosition = 1.0
        layer?.masksToBounds = true
        if self.operationType == .redact {
            layer?.fillColor = KMPDFAnnotationRedactConfig.shared.redactFillColor?.cgColor
//            layer?.strokeColor = .black
        } else if self.operationType == .redactWhite {
            layer?.fillColor = .white
            layer?.strokeColor = .white
        }
//        layer?.strokeColor = CGColorGetConstantColor(kCGColorBlack)
        layer?.lineJoin = .round
        layer?.lineCap = .round
        
        var lastMouseEvent = event
        // SKRectEdges
        var resizeHandle: CRectEdges = [.minYEdgeMask, .maxXEdgeMask]
        
        var originalBounds = NSMakeRect(point.x, point.y, 0, 0)

        self.layer?.addSublayer(layer!)
        
        var eventMask: NSEvent.EventTypeMask = [.leftMouseUp, .leftMouseDragged]
        var rect = NSRect.zero
        var theEvent = event
        while (true) {
            theEvent = window!.nextEvent(matching: eventMask)!
            if theEvent.type == .leftMouseUp {
                if (rect.size.width < MIN_NOTE_SIZE || rect.size.height < MIN_NOTE_SIZE) {
                    break
                }
                var quadrilateralPoints = NSMutableArray()
                var annotation = CPDFRedactAnnotation(document: self.document)
//                if self.isWhiteOut {
//                    annotation = KMPDFWhiteOutRedactAnnotation(document: self.document)
//                }
                var bounds = rect
                quadrilateralPoints.add(NSValue(point: NSMakePoint(NSMinX(bounds), NSMaxY(bounds))))
                quadrilateralPoints.add(NSValue(point: NSMakePoint(NSMaxX(bounds), NSMaxY(bounds))))
                quadrilateralPoints.add(NSValue(point: NSMakePoint(NSMinX(bounds), NSMinY(bounds))))
                quadrilateralPoints.add(NSValue(point: NSMakePoint(NSMaxX(bounds), NSMinY(bounds))))
                annotation?.setQuadrilateralPoints(quadrilateralPoints as? [Any] ?? [])
                                        
                annotation?.setModificationDate(Date())
                let userName = KMPreference.shared.author
                annotation?.setUserName(userName)

//                if ([annotation isKindOfClass:[CPDFRedactAnnotation class]]) {
                annotation?.borderWidth = 1
                if self.operationType == .redact {
                    annotation?.setBorderColor(KMPDFAnnotationRedactConfig.shared.redactOutlineColor)
                    annotation?.setInteriorColor(KMPDFAnnotationRedactConfig.shared.redactFillColor)
                    annotation?.setFontColor(KMPDFAnnotationRedactConfig.shared.redactFontColor)
                    if KMPDFAnnotationRedactConfig.shared.overlayText {
                        if KMPDFAnnotationRedactConfig.shared.textAlignment == 0 {
                            annotation?.setAlignment(.left)
                        } else if KMPDFAnnotationRedactConfig.shared.textAlignment == 1 {
                            annotation?.setAlignment(.center)
                        } else if KMPDFAnnotationRedactConfig.shared.textAlignment == 2 {
                            annotation?.setAlignment(.right)
                        }
                        let font = NSFont(name: "Helvetica", size: KMPDFAnnotationRedactConfig.shared.fontSize.cgFloat)
                        annotation?.setFont(font)
                        annotation?.setOverlayText(KMPDFAnnotationRedactConfig.shared.overlayTextString)
                    }
                } else if self.operationType == .redactWhite {
                    annotation?.setBorderColor(NSColor.red)
                    annotation?.setInteriorColor(NSColor.white)
                    annotation?.setFontColor(NSColor.white)
                }
                
//                if self.isWhiteOut {
//                    annotation?.drawRedactionsAsRedacted = false
//                } else {
                    annotation?.drawRedactionsAsRedacted = false
//                }
                self.addAnnotation(with: annotation, to: page)
                self.newAddAnnotation.append(annotation!)
                break
            } else if theEvent.type == .leftMouseDragged {
//                rect = self.doResizeLink(event: lastMouseEvent, fromPoint: point, originalBounds: originalBounds, page: page!, resizeHandle: &resizeHandle)
                rect = self.doResizeLink(with: lastMouseEvent, from: point, originalBounds: originalBounds, page: page, resizeHandle: &resizeHandle)
                bezierPath = NSBezierPath(rect: rect)
                layer?.path = bezierPath?.kmCGPath()
                lastMouseEvent = theEvent
            }
        }
        
        layer?.removeFromSuperlayer()

        NSEvent.isMouseCoalescingEnabled = wasMouseCoalescingEnabled
    }

    func doResizeLink(event: NSEvent, fromPoint originalPagePoint: NSPoint, originalBounds: NSRect, page: CPDFPage, resizeHandle resizeHandlePtr: inout CRectEdges) -> NSRect {
        let currentPagePoint = self.convert(event.locationInView(self), to: page)
        
        var newBounds = originalBounds
        var pageBounds = page.bounds
        var relPoint = CPDFListViewSubstractPoints(currentPagePoint, originalPagePoint)
        var resizeHandle = resizeHandlePtr
        
        if (NSEqualSizes(originalBounds.size, NSZeroSize)) {
            var currentResizeHandle: CRectEdges = .minYEdgeMask
            if relPoint.x < 0.0 {
                currentResizeHandle = [.minXEdgeMask]
            } else {
                currentResizeHandle = [.maxXEdgeMask]
            }
            if relPoint.y <= 0.0 {
                currentResizeHandle.insert(.minYEdgeMask)
            } else {
                currentResizeHandle.insert(.maxYEdgeMask)
            }
            if (currentResizeHandle != resizeHandle) {
                resizeHandlePtr = currentResizeHandle
                resizeHandle = currentResizeHandle
            }
        }
        let minWidth = MIN_NOTE_SIZE
        let minHeight = MIN_NOTE_SIZE
        
        if resizeHandle.contains(.maxXEdgeMask) {
            newBounds.size.width += relPoint.x
            if (NSMaxX(newBounds) > NSMaxX(pageBounds)) {
                newBounds.size.width = NSMaxX(pageBounds) - NSMinX(newBounds)
            }
            if (NSWidth(newBounds) < minWidth) {
                newBounds.size.width = minWidth
            }
        } else if resizeHandle.contains(.minXEdgeMask) {
            newBounds.origin.x += relPoint.x
            newBounds.size.width -= relPoint.x
            if (NSMinX(newBounds) < NSMinX(pageBounds)) {
                newBounds.size.width = NSMaxX(newBounds) - NSMinX(pageBounds)
                newBounds.origin.x = NSMinX(pageBounds)
            }
            if (NSWidth(newBounds) < minWidth) {
                newBounds.origin.x = NSMaxX(newBounds) - minWidth
                newBounds.size.width = minWidth
            }
        }
        
        if resizeHandle.contains(.maxXEdgeMask) {
            newBounds.size.height += relPoint.y
            if (NSMaxY(newBounds) > NSMaxY(pageBounds)) {
                newBounds.size.height = NSMaxY(pageBounds) - NSMinY(newBounds)
            }
            if (NSHeight(newBounds) < minHeight) {
                newBounds.size.height = minHeight
            }
        } else if resizeHandle.contains(.minYEdgeMask) {
            newBounds.origin.y += relPoint.y
            newBounds.size.height -= relPoint.y
            if (NSMinY(newBounds) < NSMinY(pageBounds)) {
                newBounds.size.height = NSMaxY(newBounds) - NSMinY(pageBounds)
                newBounds.origin.y = NSMinY(pageBounds)
            }
            if (NSHeight(newBounds) < minHeight) {
                newBounds.origin.y = NSMaxY(newBounds) - minHeight
                newBounds.size.height = minHeight
            }
        }
        return newBounds
    }
    
    override func validate(_ menuItem: NSMenuItem!) -> Bool {
        guard let _doc = self.document, _doc.isLocked == false else {
            return false
        }
        let action = menuItem.action
        if (action == #selector(deleteAnnotation)) {
            return true
        } else if (action == #selector(setPropertiesDefault)) {
            return true
        } else if (action == #selector(properties)) {
            return true
        } else if (action == #selector(repeatMark)) {
            if(_doc.pageCount == 1) {
                return false
            }
            return true
        } else if (action == #selector(applyRedact)) {
            return true
        } else {
            return super.validate(menuItem)
        }
    }
    
    /*
     #pragma mark -

     - (void)drawPage:(CPDFPage *)page toContext:(CGContextRef)context
     {
         [self.activeAnnotations enumerateObjectsUsingBlock:^(CPDFAnnotation *annotation, NSUInteger idx, BOOL * _Nonnull stop) {
             if (annotation.page && [annotation.page isEqual:page]) {
                 [annotation drawSelectionHighlightForView:self inContext:context];
             }
         }];
     }

     - (CPDFPage *)pageAndPoint:(NSPoint *)point forEvent:(NSEvent *)event nearest:(BOOL)nearest {
         NSPoint p = [event locationInView:self];
         CPDFPage *page = [self pageForPoint:p nearest:nearest];
         if (page && point)
             *point = [self convertPoint:p toPage:page];
         return page;
     }
     */
    
}

// MARK: - KMExtensions

extension KMRedactPDFView {
    @objc dynamic func acrossAddAnnotations(_ pages: NSMutableArray) {
        if(pages.count == 0) {
            return
        }
        var anntations = NSMutableArray()
        for i in 0 ..< pages.count {
//            NSUInteger index = [[pages objectAtIndex:i] integerValue];
            guard let index = (pages.object(at: i) as? NSNumber)?.intValue else {
                continue
            }
            if(index - 1 < self.document.pageCount) {
//                CPDFPage *page = [[self.document pageAtIndex:index-1] retain];
                let page = self.document.page(at: UInt(index-1))
                var annotation = CPDFRedactAnnotation(document: self.document)
//                if self.isWhiteOut {
//                    annotation = KMPDFWhiteOutRedactAnnotation(document: self.document)
//                }
                if let anno = self.currentAnnotation {
                    annotation?.setUserName(anno.userName())
                    annotation?.setModificationDate(anno.modificationDate())
                    annotation?.setQuadrilateralPoints(anno.quadrilateralPoints())
                    annotation?.borderWidth = anno.borderWidth
                    if self.isWhiteOut {
                        annotation?.setBorderColor(.white)
                        annotation?.setInteriorColor(.white)
                    } else {
                        annotation?.setBorderColor(anno.borderColor())
                        annotation?.setInteriorColor(anno.interiorColor())
                    }
                    annotation?.setFont(anno.font())
                    annotation?.setOverlayText(anno.overlayText())
                    annotation?.setFontColor(anno.fontColor())
                    annotation?.setAlignment(anno.alignment())
                    
                    let pageRect = page?.bounds ?? .zero
                    let annotationRect  = annotation?.bounds ?? .zero
                    if (NSMaxX(annotationRect) > NSMaxX(pageRect) ||
                        NSMinX(annotationRect) < NSMinX(pageRect) ||
                        NSMinY(annotationRect) < NSMinY(pageRect) ||
                        NSMaxY(annotationRect) > NSMaxY(pageRect) ||
                        anno.page == page){
                        continue
                    }
                }

                page?.addAnnotation(annotation)
                anntations.add(annotation as Any)
                self.setNeedsDisplayAnnotationViewFor(page)
            }
        }
        (self.undoManager?.prepare(withInvocationTarget: self) as AnyObject).removeAccosAnnotations(anntations)
    }
    
    @objc dynamic func removeAccosAnnotations(_ annotations: NSMutableArray) {
        if(annotations.count == 0){
            return
        }
        var pageIndexs = NSMutableArray()
        for i in 0 ..< annotations.count {
            guard let annotation = annotations.object(at: i) as? CPDFRedactAnnotation else {
                continue
            }
            let page = annotation.page
            let index = self.document.index(for: page)
            page?.removeAnnotation(annotation)
            pageIndexs.add(NSNumber(integerLiteral: Int(index)+1))
            self.setNeedsDisplayAnnotationViewFor(page)
        }
        (self.undoManager?.prepare(withInvocationTarget: self) as AnyObject).acrossAddAnnotations(pageIndexs)
    }
    
    /*
     - (CGFloat)unitWidthOnPage:(CPDFPage *)page
     {
         return NSWidth([self convertRect:NSMakeRect(0.0, 0.0, 1.0, 1.0) toPage:page]);
     }

     - (NSRect)integralRect:(NSRect)rect onPage:(CPDFPage *)page
     {
         return [self convertRect:[self convertRect:rect fromPage:page] toPage:page];
     }
     
     - (CPDFAnnotation *)addRedactPDFSelection:(CPDFSelection *)currentSelection
     {
         NSMutableArray *quadrilateralPoints = [NSMutableArray array];
         CPDFRedactAnnotation *annotation = [[CPDFRedactAnnotation alloc] initWithDocument:self.document];
         for (CPDFSelection *selection in currentSelection.selectionsByLine) {
             CGRect bounds = selection.bounds;
             [quadrilateralPoints addObject:[NSValue valueWithPoint:CGPointMake(CGRectGetMinX(bounds), CGRectGetMaxY(bounds))]];
             [quadrilateralPoints addObject:[NSValue valueWithPoint:CGPointMake(CGRectGetMaxX(bounds), CGRectGetMaxY(bounds))]];
             [quadrilateralPoints addObject:[NSValue valueWithPoint:CGPointMake(CGRectGetMinX(bounds), CGRectGetMinY(bounds))]];
             [quadrilateralPoints addObject:[NSValue valueWithPoint:CGPointMake(CGRectGetMaxX(bounds), CGRectGetMinY(bounds))]];
         }
         NSString *userName = [[NSUserDefaults standardUserDefaults] stringForKey:@"SKUserName"];
         [annotation setUserName:userName ? : NSFullUserName()];
         [annotation setModificationDate:[NSDate date]];
         [annotation setQuadrilateralPoints:quadrilateralPoints];
         [annotation setBorderWidth:10];
         [(CPDFRedactAnnotation *)annotation setBorderColor:[KMPDFAnnotationRedactConfig sharedInstance].redactOutlineColor];
         [(CPDFRedactAnnotation *)annotation setInteriorColor:[KMPDFAnnotationRedactConfig sharedInstance].redactFillColor];
         [(CPDFRedactAnnotation *)annotation setFontColor:[KMPDFAnnotationRedactConfig sharedInstance].redactFontColor];
         if([KMPDFAnnotationRedactConfig sharedInstance].overlayText) {
             [(CPDFRedactAnnotation *)annotation setAlignment:[KMPDFAnnotationRedactConfig sharedInstance].textAlignment];
             NSFont* font = [NSFont fontWithName:@"Helvetica" size:[KMPDFAnnotationRedactConfig sharedInstance].fontSize];
             [(CPDFRedactAnnotation *)annotation setFont:font];
             [(CPDFRedactAnnotation *)annotation setOverlayText:[KMPDFAnnotationRedactConfig sharedInstance].overlayTextString];
         }
         
         return annotation;
     }
     
     - (void)deleteAnnotation:(NSMenuItem *)item {
         CPDFRedactAnnotation *annotation = item.representedObject;
         if(annotation && [annotation isKindOfClass:[CPDFRedactAnnotation class]]) {
             [annotation retain];
             CPDFPage *page = [[annotation page] retain];
             [self setNeedsDisplayAnnotationViewForPage:page];
             [self removeAnnotation:annotation];
             [annotation release];
             [page release];
         }
     }

     - (void)addAnnotation:(CPDFAnnotation *)annotation toPage:(CPDFPage *)page
     {
         [[[self undoManager] prepareWithInvocationTarget:self] removeAnnotation:annotation];
         [page addAnnotation:annotation];
         if([self.newAddAnnotation containsObject:annotation]) {
             [self.newAddAnnotation removeObject:annotation];
         } else {
             [self.newAddAnnotation addObject:annotation];
         }
         [self setNeedsDisplayAnnotationViewForPage:page];
         

     }

     - (void)removeAnnotation:(CPDFAnnotation *)annotation
     {
         CPDFAnnotation *wasAnnotation = [annotation retain];
         CPDFPage *page = [[wasAnnotation page] retain];
         
         [[[self undoManager] prepareWithInvocationTarget:self] addAnnotation:wasAnnotation toPage:page];
         
         if([self.newAddAnnotation containsObject:annotation]) {
             [self.newAddAnnotation removeObject:annotation];
         } else {
             [self.newAddAnnotation addObject:annotation];
         }
         if([self.activeAnnotations containsObject:annotation]) {
             [self.activeAnnotations removeObject:annotation];
         }
         [self setNeedsDisplayAnnotationViewForPage:page];
         [page removeAnnotation:wasAnnotation];

         [wasAnnotation release];
         [page release];
     }
     */
}

// MARK: - Event

extension KMRedactPDFView {
    func fontColorMenuItem() -> NSMenuItem {
        let fontColorItem = NSMenuItem(title: KMLocalizedString("Text Color", nil), action: #selector(menuItemEditingClick_FontColor), keyEquivalent: "")
        fontColorItem.target = self
        return fontColorItem
    }
    
    @objc func menuItemEditingClick_FontColor(_ sender: NSMenuItem?) {
        let color = self.editingSelectionFontColor()
        let cp = NSColorPanel.shared
        cp.orderFront(nil)
        cp.setTarget(self)
        cp.color = color!
        cp.showsAlpha = false
        cp.setAction(#selector(fontColorChangeAction))
    }
    
    @objc func fontColorChangeAction(_ sender: AnyObject?) {
        self.setEditingSelectionFontColor(NSColorPanel.shared.color)
        guard let callback = self.eventColorChanged else {
            return
        }
        callback(NSColorPanel.shared.color)
    }
    
    func fontSizeMenuItem() -> NSMenuItem {
        let size = self.editingSelectionFontSize()
        let fontSizes = self.fontSizes()
        let submenu = NSMenu()
        for (i,fontSize) in fontSizes.enumerated() {
            let fs: CGFloat = fontSize.stringToCGFloat()
            let item = NSMenuItem(title: String(format: "%d pt", fs), action: #selector(menuItemEditingClick_FontSize), keyEquivalent: "")
            item.target = self
            item.tag = i
            submenu.addItem(item)
            if (fabsf(Float(fs-size)) < 0.1) {
                item.state = .on
            }
        }
        
        let fontSizeItem = NSMenuItem(title: KMLocalizedString("Font Size", nil), action: nil, keyEquivalent: "")
        fontSizeItem.submenu = submenu
        return fontSizeItem
    }
    
    func fontSizes() -> [String] {
        return ["6", "7", "8", "9", "10", "11", "12", "13", "14", "15", "16", "17", "18", "24", "36", "48", "72", "96", "144", "288"]
    }
    
    @objc func menuItemEditingClick_FontSize(_ item: NSMenuItem) {
        let fontSize = self.fontSizes()[item.tag].stringToCGFloat()
        self.setEditingSelectionFontSize(fontSize)
        guard let callback = self.eventFontChanged else {
            return
        }
        callback()
    }
    
    func imageExportMenuItem() -> NSMenuItem {
        let submenu = NSMenu()
        for (i, title) in self.titles().enumerated() {
            let item = NSMenuItem(title: title, action: #selector(menuItemEditingClick_export), keyEquivalent: "")
            item.tag = i
            submenu.addItem(item)
        }
        let exportmentItem = NSMenuItem(title: KMLocalizedString("Export", nil), action: nil, keyEquivalent: "")
        exportmentItem.submenu = submenu
        return exportmentItem
    }
    
    func titles() -> [String] {
        return ["PNG", "JPG", "PDF"]
    }
    
    @objc func menuItemEditingClick_export(_ item: NSMenuItem) {
        let idx = item.tag
        guard let callback = self.exportBtnTaped else {
            return
        }
        callback(idx)
    }
    
    func imageRotateMenuItem() -> NSMenuItem {
        let item = NSMenuItem(title: KMLocalizedString("Rotate", nil), action: #selector(menuItemEditingClick_RotateImage), keyEquivalent: "")
        item.target = self
        return item
    }
    
    @objc func menuItemEditingClick_RotateImage(_ iten: NSMenuItem) {
        self.rotate(with: self.editingArea() as? CPDFEditImageArea, rotate: 90)
    }
    
    /*
     - (NSMenuItem *)alightMenuItem {
         NSMenu *submenu = [[[NSMenu alloc] init] autorelease];
         
         NSArray *titles = @[NSLocalizedString(@"Left Alignment", nil),
                             NSLocalizedString(@"Right Alignment", nil),
                             NSLocalizedString(@"Center", nil),
                             NSLocalizedString(@"Justified Alignment", nil),];
         NSTextAlignment alignment = [self editingSelectionAlignment];
         for (NSUInteger i=0; i<titles.count; i++) {
             NSMenuItem *item = [[[NSMenuItem alloc] initWithTitle:[titles objectAtIndex:i]
                                                            action:@selector(menuItemEditingClick_alignment:)
                                                     keyEquivalent:@""] autorelease];
             if (alignment == i) {
                 item.state = NSControlStateValueOn;
             }
             item.tag = i;
             [submenu addItem:item];
         }
         
         NSMenuItem *alignmentItem = [[NSMenuItem alloc] initWithTitle:NSLocalizedString(@"Text Alignment", nil) action:nil keyEquivalent:@""];
         alignmentItem.submenu = submenu;
         
         return alignmentItem;
     }
     
     - (void)menuItemEditingClick_alignment:(NSMenuItem *)item {
         [self setCurrentSelectionAlignment:(NSTextAlignment)item.tag];
     }
     
     - (NSMenuItem *)imageCutMenuItem {
         NSMenuItem *fontColorItem = [[[NSMenuItem alloc] initWithTitle:NSLocalizedString(@"Cut", nil)
                                                                 action:@selector(menuItemEditingClick_CutImage:)
                                                          keyEquivalent:@""] autorelease];
         fontColorItem.target = self;
         return fontColorItem;
     }

     - (NSMenuItem *)imagePasteMenuItem {
         NSMenuItem *fontColorItem = [[[NSMenuItem alloc] initWithTitle:NSLocalizedString(@"Paste", nil)
                                                                 action:@selector(menuItemEditingClick_PasteImage:)
                                                          keyEquivalent:@""] autorelease];
         fontColorItem.target = self;
         return fontColorItem;
     }
     - (void)menuItemEditingClick_CutImage:(NSMenuItem *)item {
         
     }

     - (void)menuItemEditingClick_PasteImage:(NSMenuItem *)item {
         
     }
     */
}