use controller + allow collapsing

Author: xyzqm

CodeEdit/WorkspaceView.swift

@@ -105,18 +105,8 @@ struct WorkspaceView: View {
     }
 }
 
-struct WorkspaceSplitView: NSViewRepresentable {
-    @EnvironmentObject private var workspace: WorkspaceDocument
-    @EnvironmentObject private var editorManager: EditorManager
-    @EnvironmentObject private var utilityAreaViewModel: UtilityAreaViewModel
-    @FocusState var focusedEditor: Editor?
-
-    final class CustomSplitView: NSSplitView {
-        override var dividerThickness: CGFloat { StatusBarView.height }
-        override var dividerColor: NSColor { .clear }
-    }
-
-    func makeNSView(context: Context) -> NSSplitView {
+struct WorkspaceSplitView: NSViewControllerRepresentable {
+    func makeNSViewController(context: Context) -> WorkspaceViewController {
         let editor = EditorLayoutView(
             layout: editorManager.isFocusingActiveEditor
             ? editorManager.activeEditor.getEditorLayout() ?? editorManager.editorLayout
@@ -134,35 +124,59 @@ struct WorkspaceSplitView: NSViewRepresentable {
             .frame(idealHeight: 260)
             .frame(minHeight: 100)
 
-        let splitView = CustomSplitView()
-        splitView.arrangesAllSubviews = false
-        let editorPane = NSHostingView(rootView: editor)
-        let utilityPane = NSHostingView(rootView: utility)
-        splitView.addArrangedSubview(editorPane)
-        splitView.addArrangedSubview(utilityPane)
-
-        let dividerView = NSHostingView(rootView: StatusBarView())
-        dividerView.translatesAutoresizingMaskIntoConstraints = false
-        let constraints = [
-                            dividerView.topAnchor.constraint(equalTo: splitView.subviews[0].bottomAnchor),
-                            dividerView.bottomAnchor.constraint(equalTo: splitView.subviews[1].topAnchor),
-                            dividerView.leadingAnchor.constraint(equalTo: splitView.leadingAnchor),
-                            dividerView.trailingAnchor.constraint(equalTo: splitView.trailingAnchor)
-                        ]
-        splitView.addSubview(dividerView)
-        NSLayoutConstraint.activate(constraints)
-
-        splitView.adjustSubviews()
-
-
-        return splitView
+        let splitViewController = WorkspaceViewController()
+        splitViewController.addPane(editor)
+        splitViewController.addPane(utility)
+        return splitViewController
     }
 
-    func updateNSView(_ nsView: NSSplitView, context: Context) {
-
-    }
+    func updateNSViewController(_ nsViewController: WorkspaceViewController, context: Context) {}
 
-    typealias NSViewType = NSSplitView
+    typealias NSViewControllerType = WorkspaceViewController
 
+    @EnvironmentObject private var workspace: WorkspaceDocument
+    @EnvironmentObject private var editorManager: EditorManager
+    @EnvironmentObject private var utilityAreaViewModel: UtilityAreaViewModel
+    @FocusState var focusedEditor: Editor?
 
+    /// Split view that customizes divider thickness to allow status bar to act as divider.
+    final class CustomSplitView: NSSplitView {
+        override var dividerThickness: CGFloat { StatusBarView.height }
+        override var dividerColor: NSColor { .clear }
+    }
+
+    final class WorkspaceViewController: NSSplitViewController {
+        init() {
+            super.init(nibName: nil, bundle: nil)
+            splitView = CustomSplitView()
+            splitView.arrangesAllSubviews = false
+        }
+        
+        required init?(coder: NSCoder) {
+            fatalError("init(coder:) has not been implemented")
+        }
+
+        override func viewDidLoad() {
+            super.viewDidLoad()
+            let dividerView = NSHostingView(rootView: StatusBarView())
+            dividerView.translatesAutoresizingMaskIntoConstraints = false
+             print(splitView.subviews, splitViewItems)
+            let constraints = [
+                                dividerView.topAnchor.constraint(equalTo: splitView.subviews[0].bottomAnchor),
+                                dividerView.bottomAnchor.constraint(equalTo: splitView.subviews[1].topAnchor),
+                                dividerView.leadingAnchor.constraint(equalTo: splitView.leadingAnchor),
+                                dividerView.trailingAnchor.constraint(equalTo: splitView.trailingAnchor)
+                            ]
+            splitView.addSubview(dividerView)
+            NSLayoutConstraint.activate(constraints)
+        }
+
+        func addPane(_ pane: some View) {
+            let viewController = NSHostingController(rootView: pane)
+            let splitViewItem = NSSplitViewItem(viewController: viewController)
+            splitViewItem.canCollapse = true
+            print(splitViewItems.count)
+            insertSplitViewItem(splitViewItem, at: splitViewItems.count)
+        }
+    }
 }