Swiftgram/submodules/SettingsUI/Sources/Data and Storage/WebBrowserItem.swift

import Foundation
import UIKit
import Display
import AsyncDisplayKit
import SwiftSignalKit
import TelegramCore
import TelegramPresentationData
import ItemListUI
import PhotoResources
import OpenInExternalAppUI

class WebBrowserItem: ListViewItem, ItemListItem {
    let engine: TelegramEngine
    let presentationData: ItemListPresentationData
    let title: String
    let application: OpenInApplication
    let checked: Bool
    public let sectionId: ItemListSectionId
    let action: () -> Void
    
    public init(engine: TelegramEngine, presentationData: ItemListPresentationData, title: String, application: OpenInApplication, checked: Bool, sectionId: ItemListSectionId, action: @escaping () -> Void) {
        self.engine = engine
        self.presentationData = presentationData
        self.title = title
        self.application = application
        self.checked = checked
        self.sectionId = sectionId
        self.action = action
    }
    
    public func nodeConfiguredForParams(async: @escaping (@escaping () -> Void) -> Void, params: ListViewItemLayoutParams, synchronousLoads: Bool, previousItem: ListViewItem?, nextItem: ListViewItem?, completion: @escaping (ListViewItemNode, @escaping () -> (Signal<Void, NoError>?, (ListViewItemApply) -> Void)) -> Void) {
        async {
            let node = WebBrowserItemNode()
            let (layout, apply) = node.asyncLayout()(self, params, itemListNeighbors(item: self, topItem: previousItem as? ItemListItem, bottomItem: nextItem as? ItemListItem))
            
            node.contentSize = layout.contentSize
            node.insets = layout.insets
            
            Queue.mainQueue().async {
                completion(node, {
                    return (nil, { _ in apply() })
                })
            }
        }
    }
    
    public func updateNode(async: @escaping (@escaping () -> Void) -> Void, node: @escaping () -> ListViewItemNode, params: ListViewItemLayoutParams, previousItem: ListViewItem?, nextItem: ListViewItem?, animation: ListViewItemUpdateAnimation, completion: @escaping (ListViewItemNodeLayout, @escaping (ListViewItemApply) -> Void) -> Void) {
        Queue.mainQueue().async {
            if let nodeValue = node() as? WebBrowserItemNode {
                let makeLayout = nodeValue.asyncLayout()
                
                async {
                    let (layout, apply) = makeLayout(self, params, itemListNeighbors(item: self, topItem: previousItem as? ItemListItem, bottomItem: nextItem as? ItemListItem))
                    Queue.mainQueue().async {
                        completion(layout, { _ in
                            apply()
                        })
                    }
                }
            }
        }
    }
    
    public var selectable: Bool = true
    
    public func selected(listView: ListView){
        listView.clearHighlightAnimated(true)
        self.action()
    }
}

private final class WebBrowserItemNode: ListViewItemNode {
    private let backgroundNode: ASDisplayNode
    private let topStripeNode: ASDisplayNode
    private let bottomStripeNode: ASDisplayNode
    private let highlightedBackgroundNode: ASDisplayNode
    private let maskNode: ASImageNode
    
    private let activateArea: AccessibilityAreaNode
    
    private let iconNode: TransformImageNode
    private let checkIconNode: ASImageNode
    private let titleNode: TextNode
    
    private var item: WebBrowserItem?
    
    public init() {
        self.backgroundNode = ASDisplayNode()
        self.backgroundNode.isLayerBacked = true
        
        self.topStripeNode = ASDisplayNode()
        self.topStripeNode.isLayerBacked = true
        
        self.bottomStripeNode = ASDisplayNode()
        self.bottomStripeNode.isLayerBacked = true
        
        self.maskNode = ASImageNode()
        
        self.checkIconNode = ASImageNode()
        self.checkIconNode.isLayerBacked = true
        self.checkIconNode.displayWithoutProcessing = true
        self.checkIconNode.displaysAsynchronously = false
        
        self.iconNode = TransformImageNode()
        
        self.titleNode = TextNode()
        self.titleNode.isUserInteractionEnabled = false
        self.titleNode.contentMode = .left
        self.titleNode.contentsScale = UIScreen.main.scale
        
        self.highlightedBackgroundNode = ASDisplayNode()
        self.highlightedBackgroundNode.isLayerBacked = true
        
        self.activateArea = AccessibilityAreaNode()
        
        super.init(layerBacked: false, dynamicBounce: false)
        
        self.addSubnode(self.iconNode)
        self.addSubnode(self.checkIconNode)
        self.addSubnode(self.titleNode)
        self.addSubnode(self.activateArea)
        
        self.activateArea.activate = { [weak self] in
            self?.item?.action()
            return true
        }
    }
    
    public func asyncLayout() -> (_ item: WebBrowserItem, _ params: ListViewItemLayoutParams, _ neighbors: ItemListNeighbors) -> (ListViewItemNodeLayout, () -> Void) {
        let makeTitleLayout = TextNode.asyncLayout(self.titleNode)
        let makeIconLayout = self.iconNode.asyncLayout()
        
        let currentItem = self.item
        
        return { item, params, neighbors in
            let leftInset: CGFloat = params.leftInset + 16.0 + 43.0
            
            let iconSize = CGSize(width: 29.0, height: 29.0)
            let arguments = TransformImageArguments(corners: ImageCorners(radius: 5.0), imageSize: iconSize, boundingSize: iconSize, intrinsicInsets: UIEdgeInsets(), emptyColor: item.presentationData.theme.list.mediaPlaceholderColor)
            let imageApply = makeIconLayout(arguments)
            
            var updatedIconSignal: Signal<(TransformImageArguments) -> DrawingContext?, NoError>?
            if currentItem?.application != item.application {
                switch item.application {
                case .safari:
                    if let image = UIImage(bundleImageName: "Open In/Safari") {
                        updatedIconSignal = openInAppIcon(engine: item.engine, appIcon: .image(image: image))
                    }
                case .maps:
                    if let image = UIImage(bundleImageName: "Open In/Maps") {
                        updatedIconSignal = openInAppIcon(engine: item.engine, appIcon: .image(image: image))
                    }
                case let .other(_, identifier, _, store):
                    updatedIconSignal = openInAppIcon(engine: item.engine, appIcon: .resource(resource: OpenInAppIconResource(appStoreId: identifier, store: store)))
                }
            }
            
            let titleFont = Font.regular(item.presentationData.fontSize.itemListBaseFontSize)
            
            let (titleLayout, titleApply) = makeTitleLayout(TextNodeLayoutArguments(attributedString: NSAttributedString(string: item.title, font: titleFont, textColor: item.presentationData.theme.list.itemPrimaryTextColor), backgroundColor: nil, maximumNumberOfLines: 1, truncationType: .end, constrainedSize: CGSize(width: params.width - leftInset - 20.0, height: CGFloat.greatestFiniteMagnitude), alignment: .natural, cutout: nil, insets: UIEdgeInsets()))
            
            let separatorHeight = UIScreenPixel
            
            let insets = itemListNeighborsGroupedInsets(neighbors, params)
            let contentSize = CGSize(width: params.width, height: 22.0 + titleLayout.size.height)
            
            let layout = ListViewItemNodeLayout(contentSize: contentSize, insets: insets)
            
            var updateCheckImage: UIImage?
            var updatedTheme: PresentationTheme?
            
            if currentItem?.presentationData.theme !== item.presentationData.theme {
                updatedTheme = item.presentationData.theme
                updateCheckImage = PresentationResourcesItemList.checkIconImage(item.presentationData.theme)
            }

            return (layout, { [weak self] in
                if let strongSelf = self {
                    strongSelf.item = item
                    
                    strongSelf.activateArea.accessibilityLabel = item.title
                    if item.checked {
                        strongSelf.activateArea.accessibilityValue = "Selected"
                    } else {
                        strongSelf.activateArea.accessibilityValue = ""
                    }
                    
                    strongSelf.activateArea.frame = CGRect(origin: CGPoint(x: params.leftInset, y: 0.0), size: CGSize(width: params.width - params.leftInset - params.rightInset, height: layout.contentSize.height))
                    
                    if let updateCheckImage = updateCheckImage {
                        strongSelf.checkIconNode.image = updateCheckImage
                    }
                    
                    if let _ = updatedTheme {
                        strongSelf.topStripeNode.backgroundColor = item.presentationData.theme.list.itemBlocksSeparatorColor
                        strongSelf.bottomStripeNode.backgroundColor = item.presentationData.theme.list.itemBlocksSeparatorColor
                        strongSelf.backgroundNode.backgroundColor = item.presentationData.theme.list.itemBlocksBackgroundColor
                        strongSelf.highlightedBackgroundNode.backgroundColor = item.presentationData.theme.list.itemHighlightedBackgroundColor
                    }
                    
                    let _ = titleApply()
                    let _ = imageApply()
                    if let updatedImageSignal = updatedIconSignal {
                        strongSelf.iconNode.setSignal(updatedImageSignal)
                    }
                    
                    strongSelf.iconNode.frame = CGRect(origin: CGPoint(x: params.leftInset + floor((leftInset - params.leftInset - iconSize.width) / 2.0), y: floor((layout.contentSize.height - iconSize.height) / 2.0)), size: iconSize)
                    
                    if let image = strongSelf.checkIconNode.image {
                        strongSelf.checkIconNode.frame = CGRect(origin: CGPoint(x: params.width - params.rightInset - image.size.width - floor((44.0 - image.size.width) / 2.0), y: floor((contentSize.height - image.size.height) / 2.0)), size: image.size)
                    }
                    strongSelf.checkIconNode.isHidden = !item.checked
                    
                    if strongSelf.backgroundNode.supernode == nil {
                        strongSelf.insertSubnode(strongSelf.backgroundNode, at: 0)
                    }
                    if strongSelf.topStripeNode.supernode == nil {
                        strongSelf.insertSubnode(strongSelf.topStripeNode, at: 1)
                    }
                    if strongSelf.bottomStripeNode.supernode == nil {
                        strongSelf.insertSubnode(strongSelf.bottomStripeNode, at: 2)
                    }
                    if strongSelf.maskNode.supernode == nil {
                        strongSelf.insertSubnode(strongSelf.maskNode, at: 3)
                    }
                    let hasCorners = itemListHasRoundedBlockLayout(params)
                    var hasTopCorners = false
                    var hasBottomCorners = false
                    switch neighbors.top {
                        case .sameSection(false):
                            strongSelf.topStripeNode.isHidden = true
                        default:
                            hasTopCorners = true
                            strongSelf.topStripeNode.isHidden = hasCorners
                    }
                    let bottomStripeInset: CGFloat
                    switch neighbors.bottom {
                        case .sameSection(false):
                            bottomStripeInset = leftInset
                        default:
                            bottomStripeInset = 0.0
                            hasBottomCorners = true
                            strongSelf.bottomStripeNode.isHidden = hasCorners
                    }
                    
                    strongSelf.maskNode.image = hasCorners ? PresentationResourcesItemList.cornersImage(item.presentationData.theme, top: hasTopCorners, bottom: hasBottomCorners) : nil
                    
                    strongSelf.backgroundNode.frame = CGRect(origin: CGPoint(x: 0.0, y: -min(insets.top, separatorHeight)), size: CGSize(width: params.width, height: contentSize.height + min(insets.top, separatorHeight) + min(insets.bottom, separatorHeight)))
                    strongSelf.maskNode.frame = strongSelf.backgroundNode.frame.insetBy(dx: params.leftInset, dy: 0.0)
                    strongSelf.topStripeNode.frame = CGRect(origin: CGPoint(x: 0.0, y: -min(insets.top, separatorHeight)), size: CGSize(width: params.width, height: separatorHeight))
                    strongSelf.bottomStripeNode.frame = CGRect(origin: CGPoint(x: bottomStripeInset, y: contentSize.height - separatorHeight), size: CGSize(width: params.width - bottomStripeInset, height: separatorHeight))
                    
                    strongSelf.titleNode.frame = CGRect(origin: CGPoint(x: leftInset, y: 11.0), size: titleLayout.size)
                    
                    strongSelf.highlightedBackgroundNode.frame = CGRect(origin: CGPoint(x: 0.0, y: -UIScreenPixel), size: CGSize(width: params.width, height: 44.0 + UIScreenPixel + UIScreenPixel))
                }
            })
        }
    }
    
    override public func setHighlighted(_ highlighted: Bool, at point: CGPoint, animated: Bool) {
        super.setHighlighted(highlighted, at: point, animated: animated)
        
        if highlighted {
            self.highlightedBackgroundNode.alpha = 1.0
            if self.highlightedBackgroundNode.supernode == nil {
                var anchorNode: ASDisplayNode?
                if self.bottomStripeNode.supernode != nil {
                    anchorNode = self.bottomStripeNode
                } else if self.topStripeNode.supernode != nil {
                    anchorNode = self.topStripeNode
                } else if self.backgroundNode.supernode != nil {
                    anchorNode = self.backgroundNode
                }
                if let anchorNode = anchorNode {
                    self.insertSubnode(self.highlightedBackgroundNode, aboveSubnode: anchorNode)
                } else {
                    self.addSubnode(self.highlightedBackgroundNode)
                }
            }
        } else {
            if self.highlightedBackgroundNode.supernode != nil {
                if animated {
                    self.highlightedBackgroundNode.layer.animateAlpha(from: self.highlightedBackgroundNode.alpha, to: 0.0, duration: 0.4, completion: { [weak self] completed in
                        if let strongSelf = self {
                            if completed {
                                strongSelf.highlightedBackgroundNode.removeFromSupernode()
                            }
                        }
                    })
                    self.highlightedBackgroundNode.alpha = 0.0
                } else {
                    self.highlightedBackgroundNode.removeFromSupernode()
                }
            }
        }
    }
    
    override public func animateInsertion(_ currentTimestamp: Double, duration: Double, short: Bool) {
        self.layer.animateAlpha(from: 0.0, to: 1.0, duration: 0.4)
    }
    
    override public func animateRemoved(_ currentTimestamp: Double, duration: Double) {
        self.layer.animateAlpha(from: 1.0, to: 0.0, duration: 0.15, removeOnCompletion: false)
    }
}