git.r.bdr.sh - rbdr/map/blob - Map/Views/MapTextEditor.swift

   1 import Cocoa
   2 import SwiftUI
   3
   4 class MapTextEditorController: NSViewController {
   5
   6   @Binding var text: String
   7   var colorScheme: ColorScheme
   8
   9   private let vertexRegex = MapParsingPatterns.vertex
  10   private let edgeRegex = MapParsingPatterns.edge
  11   private let blockerRegex = MapParsingPatterns.blocker
  12   private let opportunityRegex = MapParsingPatterns.opportunity
  13   private let stageRegex = MapParsingPatterns.stage
  14
  15   private let debouncer: Debouncer = Debouncer(seconds: 0.2)
  16
  17   init(text: Binding<String>, colorScheme: ColorScheme) {
  18     self._text = text
  19     self.colorScheme = colorScheme
  20     super.init(nibName: nil, bundle: nil)
  21   }
  22
  23   required init?(coder: NSCoder) {
  24     fatalError("init(coder:) has not been implemented")
  25   }
  26
  27   override func loadView() {
  28     let scrollView = NSTextView.scrollableTextView()
  29     let textView = scrollView.documentView as! NSTextView
  30
  31     scrollView.translatesAutoresizingMaskIntoConstraints = false
  32
  33     textView.delegate = self
  34     textView.textStorage?.delegate = self
  35     textView.string = self.text
  36     textView.isEditable = true
  37     textView.font = .monospacedSystemFont(ofSize: 16.0, weight: .regular)
  38     self.view = scrollView
  39   }
  40
  41   override func viewDidAppear() {
  42     self.view.window?.makeFirstResponder(self.view)
  43   }
  44
  45   func updateColorScheme(_ colorScheme: ColorScheme) {
  46     self.colorScheme = colorScheme
  47   }
  48 }
  49
  50 extension MapTextEditorController: NSTextViewDelegate {
  51
  52   func textDidChange(_ obj: Notification) {
  53     if let textField = obj.object as? NSTextView {
  54       self.text = textField.string
  55     }
  56   }
  57
  58   func textView(_ view: NSTextView, shouldChangeTextIn: NSRange, replacementString: String?) -> Bool
  59   {
  60     let range = Range(shouldChangeTextIn, in: view.string)
  61     let target = view.string[range!]
  62
  63     if target == "--" {
  64       return false
  65     }
  66
  67     return true
  68   }
  69 }
  70
  71 extension MapTextEditorController: NSTextStorageDelegate {
  72   override func textStorageDidProcessEditing(_ obj: Notification) {
  73     if let textStorage = obj.object as? NSTextStorage {
  74       debouncer.debounce {
  75         DispatchQueue.main.async {
  76           self.colorizeText(textStorage: textStorage)
  77         }
  78       }
  79     }
  80   }
  81
  82   private func colorizeText(textStorage: NSTextStorage) {
  83     let range = NSMakeRange(0, textStorage.length)
  84     var matches = vertexRegex.matches(in: textStorage.string, options: [], range: range)
  85     let colors = MapColor.colorForScheme(colorScheme)
  86
  87     for match in matches {
  88       textStorage.addAttributes([.foregroundColor: colors.syntax.vertex], range: match.range(at: 1))
  89       textStorage.addAttributes([.foregroundColor: colors.syntax.number], range: match.range(at: 2))
  90       textStorage.addAttributes([.foregroundColor: colors.syntax.number], range: match.range(at: 3))
  91       textStorage.addAttributes([.foregroundColor: colors.syntax.option], range: match.range(at: 4))
  92     }
  93
  94     matches = edgeRegex.matches(in: textStorage.string, options: [], range: range)
  95
  96     for match in matches {
  97       textStorage.addAttributes([.foregroundColor: colors.syntax.vertex], range: match.range(at: 1))
  98       let arrowRange = match.range(at: 2)
  99       textStorage.addAttributes(
 100         [.foregroundColor: colors.syntax.symbol],
 101         range: NSMakeRange(arrowRange.lowerBound - 1, arrowRange.length + 1))
 102       textStorage.addAttributes([.foregroundColor: colors.syntax.vertex], range: match.range(at: 3))
 103     }
 104
 105     matches = opportunityRegex.matches(in: textStorage.string, options: [], range: range)
 106
 107     for match in matches {
 108       textStorage.addAttributes([.foregroundColor: colors.syntax.option], range: match.range(at: 1))
 109       textStorage.addAttributes([.foregroundColor: colors.syntax.vertex], range: match.range(at: 2))
 110       textStorage.addAttributes([.foregroundColor: colors.syntax.symbol], range: match.range(at: 3))
 111       textStorage.addAttributes([.foregroundColor: colors.syntax.number], range: match.range(at: 4))
 112     }
 113
 114     matches = blockerRegex.matches(in: textStorage.string, options: [], range: range)
 115
 116     for match in matches {
 117       textStorage.addAttributes([.foregroundColor: colors.syntax.option], range: match.range(at: 1))
 118       textStorage.addAttributes([.foregroundColor: colors.syntax.vertex], range: match.range(at: 2))
 119     }
 120
 121     matches = stageRegex.matches(in: textStorage.string, options: [], range: range)
 122
 123     for match in matches {
 124       textStorage.addAttributes([.foregroundColor: colors.syntax.option], range: match.range(at: 1))
 125       textStorage.addAttributes([.foregroundColor: colors.syntax.number], range: match.range(at: 2))
 126     }
 127   }
 128 }
 129
 130 struct MapTextEditor: NSViewControllerRepresentable {
 131
 132   @Binding var text: String
 133   let colorScheme: ColorScheme
 134
 135   func makeNSViewController(
 136     context: NSViewControllerRepresentableContext<MapTextEditor>
 137   ) -> MapTextEditorController {
 138     return MapTextEditorController(text: $text, colorScheme: colorScheme)
 139   }
 140
 141   func updateNSViewController(
 142     _ nsViewController: MapTextEditorController,
 143     context: NSViewControllerRepresentableContext<MapTextEditor>
 144   ) {
 145     nsViewController.updateColorScheme(context.environment.colorScheme)
 146   }
 147 }