AutoCompleteCoordinator

Author: FastestMolasses

Sources/CodeEditSourceEditor/CodeSuggestion/AutoCompleteCoordinatorProtocol.swift

@@ -0,0 +1,13 @@
+//
+//  AutoCompleteCoordinatorProtocol.swift
+//  CodeEditSourceEditor
+//
+//  Created by Abe Malla on 4/8/25.
+//
+
+import LanguageServerProtocol
+
+public protocol AutoCompleteCoordinatorProtocol: TextViewCoordinator {
+    func fetchCompletions() async throws -> [CompletionItem]
+    func showAutocompleteWindow()
+}

Sources/CodeEditSourceEditor/CodeSuggestion/SuggestionController.swift

@@ -46,7 +46,6 @@ public final class SuggestionController: NSWindowController {
 
     let tableView = NSTableView()
     let scrollView = NSScrollView()
-    let popover = NSPopover()
     /// Tracks when the window is placed above the cursor
     var isWindowAboveCursor = false
 
@@ -82,9 +81,15 @@ public final class SuggestionController: NSWindowController {
         fatalError("init(coder:) has not been implemented")
     }
 
+    deinit {
+        removeEventMonitors()
+    }
+
     /// Opens the window as a child of another window.
-    public func showWindow(attachedTo parentWindow: NSWindow) {
-        guard let window = window else { return }
+    public func showWindow() {
+        guard let window = window,
+              let parentWindow = NSApplication.shared.keyWindow
+        else { return }
 
         parentWindow.addChildWindow(window, ordered: .above)
         window.orderFront(nil)
@@ -176,9 +181,9 @@ public final class SuggestionController: NSWindowController {
 
         case 125, 126:  // Down/Up Arrow
             self.tableView.keyDown(with: event)
-            guard tableView.selectedRow >= 0 else { return event }
-            let selectedItem = items[tableView.selectedRow]
-            self.delegate?.onItemSelect(item: selectedItem)
+            let row = tableView.selectedRow
+            guard row >= 0, row < items.count else { return event }
+            self.delegate?.onItemSelect(item: items[row])
             return nil
 
         case 124: // Right Arrow
@@ -192,34 +197,13 @@ public final class SuggestionController: NSWindowController {
             guard tableView.selectedRow >= 0 else { return event }
             let selectedItem = items[tableView.selectedRow]
             self.delegate?.applyCompletionItem(item: selectedItem)
-            self.close()
             return nil
 
         default:
             return event
         }
     }
 
-    private func handleRightArrow() {
-        guard let window = self.window,
-              let selectedRow = tableView.selectedRowIndexes.first,
-              selectedRow < items.count,
-              !popover.isShown else {
-            return
-        }
-        let rowRect = tableView.rect(ofRow: selectedRow)
-        let rowRectInWindow = tableView.convert(rowRect, to: nil)
-        let popoverPoint = NSPoint(
-            x: window.frame.maxX,
-            y: window.frame.minY + rowRectInWindow.midY
-        )
-        popover.show(
-            relativeTo: NSRect(x: popoverPoint.x, y: popoverPoint.y, width: 1, height: 1),
-            of: window.contentView!,
-            preferredEdge: .maxX
-        )
-    }
-
     private func resetScrollPosition() {
         guard let clipView = scrollView.contentView as? NSClipView else { return }
 
@@ -246,8 +230,4 @@ public final class SuggestionController: NSWindowController {
             cursorPositionObserver = nil
         }
     }
-
-    deinit {
-        removeEventMonitors()
-    }
 }

Sources/CodeEditSourceEditor/CodeSuggestion/SuggestionControllerDelegate.swift

@@ -6,6 +6,8 @@
 //
 
 public protocol SuggestionControllerDelegate: AnyObject {
+    var currentFilterText: String { get }
+
     func applyCompletionItem(item: CodeSuggestionEntry)
     func onClose()
     func onCompletion()

Sources/CodeEditSourceEditor/Controller/TextViewController+Lifecycle.swift

@@ -212,6 +212,7 @@ extension TextViewController {
 
     func handleCommand(event: NSEvent, modifierFlags: UInt) -> NSEvent? {
         let commandKey = NSEvent.ModifierFlags.command.rawValue
+        let controlKey = NSEvent.ModifierFlags.control.rawValue
 
         switch (modifierFlags, event.charactersIgnoringModifiers) {
         case (commandKey, "/"):
@@ -230,6 +231,12 @@ extension TextViewController {
         case (0, "\u{1b}"): // Escape key
             self.findViewController?.hideFindPanel()
             return nil
+        case (controlKey, " "):
+//            suggestionController.showWindow()
+            let autocompleteCoordinators = textCoordinators.map {
+                ($0.val as? AutoCompleteCoordinatorProtocol)?.showAutocompleteWindow()
+            }
+            return nil
         case (_, _):
             return event
         }

Sources/CodeEditSourceEditor/Controller/TextViewController.swift

@@ -194,6 +194,9 @@ public class TextViewController: NSViewController {
         )
     }
 
+    /// The `SuggestionController` lets us display the autocomplete items
+    public lazy var suggestionController: SuggestionController = SuggestionController()
+
     // MARK: Init
 
     public init(