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import Cocoa
import SwiftUI
class MapTextEditorController: NSViewController {
@Binding var text: String
var colorScheme: ColorScheme
private let vertexRegex = MapParsingPatterns.vertex
private let edgeRegex = MapParsingPatterns.edge
private let blockerRegex = MapParsingPatterns.blocker
private let opportunityRegex = MapParsingPatterns.opportunity
private let stageRegex = MapParsingPatterns.stage
private let debouncer: Debouncer = Debouncer(seconds: 0.2)
init(text: Binding<String>, colorScheme: ColorScheme) {
self._text = text
self.colorScheme = colorScheme
super.init(nibName: nil, bundle: nil)
}
required init?(coder: NSCoder) {
fatalError("init(coder:) has not been implemented")
}
override func loadView() {
let scrollView = NSTextView.scrollableTextView()
let textView = scrollView.documentView as! NSTextView
scrollView.translatesAutoresizingMaskIntoConstraints = false
textView.delegate = self
textView.textStorage?.delegate = self
textView.string = self.text
textView.isEditable = true
textView.font = .monospacedSystemFont(ofSize: 16.0, weight: .regular)
self.view = scrollView
}
override func viewDidAppear() {
self.view.window?.makeFirstResponder(self.view)
}
func updateColorScheme(_ colorScheme: ColorScheme) {
self.colorScheme = colorScheme
}
}
extension MapTextEditorController: NSTextViewDelegate {
func textDidChange(_ obj: Notification) {
if let textField = obj.object as? NSTextView {
self.text = textField.string
}
}
func textView(_ view: NSTextView, shouldChangeTextIn: NSRange, replacementString: String?) -> Bool
{
let range = Range(shouldChangeTextIn, in: view.string)
let target = view.string[range!]
if target == "--" {
return false
}
return true
}
}
extension MapTextEditorController: NSTextStorageDelegate {
override func textStorageDidProcessEditing(_ obj: Notification) {
if let textStorage = obj.object as? NSTextStorage {
debouncer.debounce {
DispatchQueue.main.async {
self.colorizeText(textStorage: textStorage)
}
}
}
}
private func colorizeText(textStorage: NSTextStorage) {
let range = NSMakeRange(0, textStorage.length)
var matches = vertexRegex.matches(in: textStorage.string, options: [], range: range)
let colors = MapColor.colorForScheme(colorScheme)
for match in matches {
textStorage.addAttributes([.foregroundColor: colors.syntax.vertex], range: match.range(at: 1))
textStorage.addAttributes([.foregroundColor: colors.syntax.number], range: match.range(at: 2))
textStorage.addAttributes([.foregroundColor: colors.syntax.number], range: match.range(at: 3))
textStorage.addAttributes([.foregroundColor: colors.syntax.option], range: match.range(at: 4))
}
matches = edgeRegex.matches(in: textStorage.string, options: [], range: range)
for match in matches {
textStorage.addAttributes([.foregroundColor: colors.syntax.vertex], range: match.range(at: 1))
let arrowRange = match.range(at: 2)
textStorage.addAttributes(
[.foregroundColor: colors.syntax.symbol],
range: NSMakeRange(arrowRange.lowerBound - 1, arrowRange.length + 1))
textStorage.addAttributes([.foregroundColor: colors.syntax.vertex], range: match.range(at: 3))
}
matches = opportunityRegex.matches(in: textStorage.string, options: [], range: range)
for match in matches {
textStorage.addAttributes([.foregroundColor: colors.syntax.option], range: match.range(at: 1))
textStorage.addAttributes([.foregroundColor: colors.syntax.vertex], range: match.range(at: 2))
textStorage.addAttributes([.foregroundColor: colors.syntax.symbol], range: match.range(at: 3))
textStorage.addAttributes([.foregroundColor: colors.syntax.number], range: match.range(at: 4))
}
matches = blockerRegex.matches(in: textStorage.string, options: [], range: range)
for match in matches {
textStorage.addAttributes([.foregroundColor: colors.syntax.option], range: match.range(at: 1))
textStorage.addAttributes([.foregroundColor: colors.syntax.vertex], range: match.range(at: 2))
}
matches = stageRegex.matches(in: textStorage.string, options: [], range: range)
for match in matches {
textStorage.addAttributes([.foregroundColor: colors.syntax.option], range: match.range(at: 1))
textStorage.addAttributes([.foregroundColor: colors.syntax.number], range: match.range(at: 2))
}
}
}
struct MapTextEditor: NSViewControllerRepresentable {
@Binding var text: String
let colorScheme: ColorScheme
func makeNSViewController(
context: NSViewControllerRepresentableContext<MapTextEditor>
) -> MapTextEditorController {
return MapTextEditorController(text: $text, colorScheme: colorScheme)
}
func updateNSViewController(
_ nsViewController: MapTextEditorController,
context: NSViewControllerRepresentableContext<MapTextEditor>
) {
nsViewController.updateColorScheme(context.environment.colorScheme)
}
}
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