git.r.bdr.sh - rbdr/map/blob - Map/Presentation/Base Components/MapTextEditor.swift

   1 /*
   2  Copyright (C) 2024 Rubén Beltrán del Río
   3
   4  This program is free software: you can redistribute it and/or modify
   5  it under the terms of the GNU General Public License as published by
   6  the Free Software Foundation, either version 3 of the License, or
   7  (at your option) any later version.
   8
   9  This program is distributed in the hope that it will be useful,
  10  but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12  GNU General Public License for more details.
  13
  14  You should have received a copy of the GNU General Public License
  15  along with this program. If not, see https://map.tranquil.systems.
  16  */
  17 import Cocoa
  18 import SwiftUI
  19
  20 class MapTextEditorController: NSViewController {
  21
  22   @Binding var document: MapDocument
  23   let onChange: () -> Void
  24
  25   private let vertexRegex = MapParsingPatterns.vertex
  26   private let edgeRegex = MapParsingPatterns.edge
  27   private let blockerRegex = MapParsingPatterns.blocker
  28   private let opportunityRegex = MapParsingPatterns.opportunity
  29   private let noteRegex = MapParsingPatterns.note
  30   private let stageRegex = MapParsingPatterns.stage
  31   private let groupRegex = MapParsingPatterns.group
  32
  33   private let changeDebouncer: Debouncer = Debouncer(seconds: 1)
  34
  35   init(document: Binding<MapDocument>, onChange: @escaping () -> Void) {
  36     self._document = document
  37     self.onChange = onChange
  38     super.init(nibName: nil, bundle: nil)
  39   }
  40
  41   required init?(coder: NSCoder) {
  42     fatalError("init(coder:) has not been implemented")
  43   }
  44
  45   override func loadView() {
  46     let scrollView = NSTextView.scrollableTextView()
  47     let textView = scrollView.documentView as! NSTextView
  48
  49     scrollView.translatesAutoresizingMaskIntoConstraints = false
  50
  51     textView.backgroundColor = .ui.background
  52     textView.allowsUndo = true
  53     textView.delegate = self
  54     textView.textStorage?.delegate = self
  55     textView.string = self.document.text
  56     textView.isEditable = true
  57     textView.font = .monospacedSystemFont(ofSize: 16.0, weight: .regular)
  58     self.view = scrollView
  59   }
  60
  61   override func viewDidAppear() {
  62     self.view.window?.makeFirstResponder(self.view)
  63   }
  64 }
  65
  66 extension MapTextEditorController: NSTextViewDelegate {
  67
  68   func textDidChange(_ obj: Notification) {
  69     if let textField = obj.object as? NSTextView {
  70       self.document.text = textField.string
  71
  72       changeDebouncer.debounce {
  73         DispatchQueue.main.async {
  74           self.onChange()
  75         }
  76       }
  77     }
  78   }
  79
  80   func textView(_ view: NSTextView, shouldChangeTextIn: NSRange, replacementString: String?) -> Bool
  81   {
  82     let range = Range(shouldChangeTextIn, in: view.string)
  83     let target = view.string[range!]
  84
  85     if target == "--" {
  86       return false
  87     }
  88
  89     return true
  90   }
  91 }
  92
  93 extension MapTextEditorController: NSTextStorageDelegate {
  94
  95   override func textStorageDidProcessEditing(_ obj: Notification) {
  96     if let textStorage = obj.object as? NSTextStorage {
  97       self.colorizeText(textStorage: textStorage)
  98     }
  99   }
 100
 101   private func colorizeText(textStorage: NSTextStorage) {
 102     let range = NSMakeRange(0, textStorage.length)
 103     var matches = vertexRegex.matches(in: textStorage.string, options: [], range: range)
 104
 105     for match in matches {
 106       textStorage.addAttributes(
 107         [.foregroundColor: NSColor.syntax.vertex], range: match.range(at: 1))
 108       textStorage.addAttributes(
 109         [.foregroundColor: NSColor.syntax.number], range: match.range(at: 2))
 110       textStorage.addAttributes(
 111         [.foregroundColor: NSColor.syntax.number], range: match.range(at: 3))
 112       textStorage.addAttributes(
 113         [.foregroundColor: NSColor.syntax.option], range: match.range(at: 4))
 114     }
 115
 116     matches = edgeRegex.matches(in: textStorage.string, options: [], range: range)
 117
 118     for match in matches {
 119       textStorage.addAttributes(
 120         [.foregroundColor: NSColor.syntax.vertex], range: match.range(at: 1))
 121       let arrowRange = match.range(at: 2)
 122       textStorage.addAttributes(
 123         [.foregroundColor: NSColor.syntax.symbol],
 124         range: NSMakeRange(arrowRange.lowerBound - 1, arrowRange.length + 1))
 125       textStorage.addAttributes(
 126         [.foregroundColor: NSColor.syntax.vertex], range: match.range(at: 3))
 127     }
 128
 129     matches = opportunityRegex.matches(in: textStorage.string, options: [], range: range)
 130
 131     for match in matches {
 132       textStorage.addAttributes(
 133         [.foregroundColor: NSColor.syntax.option], range: match.range(at: 1))
 134       textStorage.addAttributes(
 135         [.foregroundColor: NSColor.syntax.vertex], range: match.range(at: 2))
 136       textStorage.addAttributes(
 137         [.foregroundColor: NSColor.syntax.symbol], range: match.range(at: 3))
 138       textStorage.addAttributes(
 139         [.foregroundColor: NSColor.syntax.number], range: match.range(at: 4))
 140     }
 141
 142     matches = blockerRegex.matches(in: textStorage.string, options: [], range: range)
 143
 144     for match in matches {
 145       textStorage.addAttributes(
 146         [.foregroundColor: NSColor.syntax.option], range: match.range(at: 1))
 147       textStorage.addAttributes(
 148         [.foregroundColor: NSColor.syntax.vertex], range: match.range(at: 2))
 149     }
 150
 151     matches = noteRegex.matches(in: textStorage.string, options: [], range: range)
 152
 153     for match in matches {
 154       textStorage.addAttributes(
 155         [.foregroundColor: NSColor.syntax.option], range: match.range(at: 1))
 156       textStorage.addAttributes(
 157         [.foregroundColor: NSColor.syntax.number], range: match.range(at: 2))
 158       textStorage.addAttributes(
 159         [.foregroundColor: NSColor.syntax.number], range: match.range(at: 3))
 160     }
 161
 162     matches = stageRegex.matches(in: textStorage.string, options: [], range: range)
 163
 164     for match in matches {
 165       textStorage.addAttributes(
 166         [.foregroundColor: NSColor.syntax.option], range: match.range(at: 1))
 167       textStorage.addAttributes(
 168         [.foregroundColor: NSColor.syntax.number], range: match.range(at: 2))
 169     }
 170
 171     matches = groupRegex.matches(in: textStorage.string, options: [], range: range)
 172
 173     for match in matches {
 174       textStorage.addAttributes(
 175         [.foregroundColor: NSColor.syntax.option], range: match.range(at: 1))
 176       textStorage.addAttributes(
 177         [.foregroundColor: NSColor.syntax.vertex], range: match.range(at: 2))
 178     }
 179   }
 180 }
 181
 182 struct MapTextEditor: NSViewControllerRepresentable {
 183
 184   @Binding var document: MapDocument
 185   var onChange: () -> Void = {}
 186
 187   func makeNSViewController(
 188     context: NSViewControllerRepresentableContext<MapTextEditor>
 189   ) -> MapTextEditorController {
 190     return MapTextEditorController(document: $document, onChange: onChange)
 191   }
 192
 193   func updateNSViewController(
 194     _ nsViewController: MapTextEditorController,
 195     context: NSViewControllerRepresentableContext<MapTextEditor>
 196   ) {}
 197 }