//
//  KMComboBox.swift
//  PDF Reader Pro
//
//  Created by wanjun on 2022/11/29.
//

import Cocoa

enum KMComboBoxType : Int {
    case none = 0
}

class KMComboBox: NSComboBox {
    
    var comboxRect: CGRect = CGRect(x: 0, y: 0, width: 0, height: 0)
    var _type: KMComboBoxType = .none

    override func draw(_ dirtyRect: NSRect) {
        super.draw(dirtyRect)

        switch type {
        case .none:
            var p = comboxRect.origin
            p.x += comboxRect.width - 23
            p.y += (comboxRect.height - 16) / 2
            
//            NSColor.init(red: 255/255.0, green: 255/255.0, blue: 255/255.0, alpha: 1.0).setFill()
            KMAppearance.Layout.l1Color().setFill()
            NSRect(x: p.x, y: 0, width: 16.0, height: comboxRect.height).fill()

            let image = NSImage(named: "KMImageNameUXIconBtnArrowDown")
            var rect = NSRect.zero
            rect.size = CGSize(width: 16.0, height: 16.0)
            image!.draw(in: NSRect(x: p.x, y: p.y, width: 16.0, height: 16.0), from: rect, operation: .sourceOver, fraction: 1.0, respectFlipped: true, hints: nil)
        default:
            break
        }
    }
    
    // MARK: Private Methods
    
    var type: KMComboBoxType {
        get {
            return _type
        }
        set {
            _type = newValue
            switch newValue {
            case .none:
                self.wantsLayer = true
                self.layer?.cornerRadius = 1.0
                self.layer?.borderWidth = 0.5
                self.layer?.borderColor = KMAppearance.Interactive.s0Color().cgColor
                self.backgroundColor = KMAppearance.Layout.w0Color()
                self.isButtonBordered = false
            default:
                break
            }
        }
    }
}

class KMComboBoxCell: NSComboBoxCell {
    private func adjustedFrameToVerticallyCenterText(_ frame: NSRect) -> NSRect {
        let offset = floor((frame.size.height / 2 - (font!.ascender + font!.descender)))
        return NSInsetRect(frame, 0.0, offset)
    }
    
    override func edit(withFrame aRect: NSRect, in controlView: NSView, editor textObj: NSText, delegate anObject: Any?, event: NSEvent?) {
        super.edit(withFrame: adjustedFrameToVerticallyCenterText(aRect), in: controlView, editor: textObj, delegate: anObject, event: event)
    }
    
    override func select(withFrame aRect: NSRect, in controlView: NSView, editor textObj: NSText, delegate anObject: Any?, start selStart: Int, length selLength: Int) {
        super.select(withFrame: adjustedFrameToVerticallyCenterText(aRect), in: controlView, editor: textObj, delegate: anObject, start: selStart, length: selLength)
    }
    
    override func drawInterior(withFrame frame: NSRect, in controlView: NSView) {
        super.drawInterior(withFrame: adjustedFrameToVerticallyCenterText(frame), in: controlView)
    }
}

class KMStampComboBoxCell: NSComboBoxCell {
    override func drawInterior(withFrame cellFrame: NSRect, in controlView: NSView) {
        backgroundColor = KMAppearance.Layout.l1Color()
        super.drawInterior(withFrame: adjustedFrameToVerticallyCenterText(cellFrame), in: controlView)
    }
    
    func adjustedFrameToVerticallyCenterText(_ frame: NSRect) -> NSRect {
        let offset = floor((frame.height / 2 - (font?.ascender ?? 0.0 + font!.descender)))
        return NSInsetRect(frame, 0.0, offset)
    }
}