1 files changed, 90 insertions, 0 deletions
diff --git a/Map/Views/SlowMapRender.swift b/Map/Views/SlowMapRender.swift
new file mode 100644
index 0000000..b7cd842
--- /dev/null
+++ b/Map/Views/SlowMapRender.swift
@@ -0,0 +1,90 @@
+import Cocoa
+import SwiftUI
+
+class SlowMapRenderController: NSViewController {
+
+  var content: String
+  private var contentBinding: Binding<String> {
+    Binding(
+      get: { self.content },
+      set: { content in
+        self.content = content
+      }
+    )
+  }
+
+  var evolution: Stage
+  private var evolutionBinding: Binding<Stage> {
+    Binding(
+      get: { self.evolution },
+      set: { evolution in
+        self.evolution = evolution
+      }
+    )
+  }
+  private var colorSchemeEnvironment: ObservableColorSchemeEnvironment
+
+  private let debouncer: Debouncer = Debouncer(seconds: 0.1)
+
+  init(content: String, evolution: Stage, colorScheme: ColorScheme) {
+
+    self.content = content
+    self.evolution = evolution
+    self.colorSchemeEnvironment = ObservableColorSchemeEnvironment(colorScheme: colorScheme)
+    super.init(nibName: nil, bundle: nil)
+  }
+
+  required init?(coder: NSCoder) {
+    fatalError("init(coder:) has not been implemented")
+  }
+
+  override func loadView() {
+
+    let renderView = MapRenderView(content: self.contentBinding, evolution: self.evolutionBinding)
+      .environmentObject(self.colorSchemeEnvironment)
+    let hostingView = NSHostingView(rootView: renderView)
+
+    self.view = hostingView
+  }
+
+  func update(content: String, evolution: Stage, colorScheme: ColorScheme) {
+    self.debouncer.debounce {
+      DispatchQueue.main.async {
+        print("Updating: START")
+        self.content = content
+        self.evolution = evolution
+        self.colorSchemeEnvironment.colorScheme = colorScheme
+        print("Updating: END")
+      }
+    }
+  }
+
+  private class ObservableColorSchemeEnvironment: ObservableObject {
+    @Published var colorScheme: ColorScheme
+
+    init(colorScheme: ColorScheme) {
+      self.colorScheme = colorScheme
+    }
+  }
+}
+
+struct SlowMapRender: NSViewControllerRepresentable {
+
+  var content: String
+  var evolution: Stage
+  let colorScheme: ColorScheme
+
+  func makeNSViewController(
+    context: NSViewControllerRepresentableContext<SlowMapRender>
+  ) -> SlowMapRenderController {
+    return SlowMapRenderController(content: content, evolution: evolution, colorScheme: colorScheme)
+  }
+
+  func updateNSViewController(
+    _ nsViewController: SlowMapRenderController,
+    context: NSViewControllerRepresentableContext<SlowMapRender>
+  ) {
+    nsViewController.update(
+      content: content, evolution: evolution, colorScheme: context.environment.colorScheme)
+  }
+}