90 lines
1.6 KiB
Swift
90 lines
1.6 KiB
Swift
//
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// Node.swift
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// TGUIKit
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//
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// Created by keepcoder on 04/10/2016.
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// Copyright © 2016 Telegram. All rights reserved.
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//
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import Cocoa
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import SwiftSignalKit
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open class Node: NSObject, ViewDisplayDelegate {
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public let nodeReady = Promise<Bool>()
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open var backgroundColor:NSColor? {
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return self.view?.backgroundColor
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}
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private let _strongView:View?
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open weak var view:View? {
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didSet {
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if let view = view {
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view.displayDelegate = self
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}
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}
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}
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open var size:NSSize = NSZeroSize
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open var frame:NSRect {
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get {
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return self.view?.frame ?? NSZeroRect
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}
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set {
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self.view?.frame = newValue
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}
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}
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deinit {
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if _strongView != nil {
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assertOnMainThread()
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}
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}
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public init(_ view:View? = nil) {
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_strongView = view
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if view != nil {
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assertOnMainThread()
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}
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super.init()
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self.view = view
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}
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open func update() {
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}
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open func setNeedDisplay() -> Void {
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if let view = view {
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view.displayDelegate = self
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view.setNeedsDisplay()
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}
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}
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public var measuredWidth:CGFloat = 0
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open func measureSize(_ width:CGFloat = 0) -> Void {
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measuredWidth = width
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}
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open func draw(_ layer: CALayer, in ctx: CGContext) {
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}
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public func removeFromSuperview() -> Void {
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self.view?.removeFromSuperview()
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}
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open var viewClass:AnyClass {
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return View.self
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}
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}
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