files

macos/Classes/FilePlugin.swift

@@ -0,0 +1,117 @@
+import FlutterMacOS
+import AppKit
+import Quartz
+
+public class FilePlugin: NSObject, NativePlugin {
+    private var channel: FlutterMethodChannel?
+
+    public func register(with registrar: FlutterPluginRegistrar) {
+        let c = FlutterMethodChannel(name: "ux/file", binaryMessenger: registrar.messenger)
+        c.setMethodCallHandler { [weak self] call, result in
+            self?.handle(call, result: result)
+        }
+        channel = c
+    }
+
+    private func handle(_ call: FlutterMethodCall, result: @escaping FlutterResult) {
+        switch call.method {
+        case "share": handleShare(call, result: result)
+        case "open":  handleOpen(call, result: result)
+        default:      result(FlutterMethodNotImplemented)
+        }
+    }
+
+    private func handleShare(_ call: FlutterMethodCall, result: @escaping FlutterResult) {
+        guard let args = call.arguments as? [String: Any],
+              let path = args["path"] as? String else {
+            return result(FlutterError(code: "bad_args", message: "path is required", details: nil))
+        }
+        guard let view = UxWindow.flutterView else {
+            return result(FlutterError(code: "no_view", message: "no Flutter view", details: nil))
+        }
+
+        let url = URL(fileURLWithPath: path)
+        let picker = NSSharingServicePicker(items: [url])
+
+        let rect: NSRect
+        if let r = args["sourceRect"] as? [String: Any],
+           let x = (r["x"] as? NSNumber)?.doubleValue,
+           let y = (r["y"] as? NSNumber)?.doubleValue,
+           let w = (r["w"] as? NSNumber)?.doubleValue,
+           let h = (r["h"] as? NSNumber)?.doubleValue {
+            if view.isFlipped {
+                rect = NSRect(x: x, y: y, width: w, height: h)
+            } else {
+                rect = NSRect(x: x, y: view.bounds.height - y - h, width: w, height: h)
+            }
+        } else {
+            rect = NSRect(x: view.bounds.midX, y: view.bounds.midY, width: 1, height: 1)
+        }
+
+        picker.show(relativeTo: rect, of: view, preferredEdge: .minY)
+        result(true)
+    }
+
+    private func handleOpen(_ call: FlutterMethodCall, result: @escaping FlutterResult) {
+        guard let args = call.arguments as? [String: Any],
+              let path = args["path"] as? String else {
+            return result(FlutterError(code: "bad_args", message: "path is required", details: nil))
+        }
+        let url = URL(fileURLWithPath: path)
+
+        // Prefer in-app Quick Look (keeps Banlu in the foreground).
+        // Fall back to NSWorkspace.open if there's no window to host the panel.
+        if let flutterView = UxWindow.flutterView,
+           let window = flutterView.window,
+           let panel = QLPreviewPanel.shared() {
+            let responder = UxQLPreviewResponder(url: url, window: window)
+            flutterView.addSubview(responder)
+            window.makeFirstResponder(responder)
+            panel.updateController()
+            panel.makeKeyAndOrderFront(nil)
+            result(true)
+            return
+        }
+
+        result(NSWorkspace.shared.open(url))
+    }
+}
+
+private final class UxQLPreviewResponder: NSView, QLPreviewPanelDataSource {
+    let url: URL
+    private weak var previousFirstResponder: NSResponder?
+    private weak var previousWindow: NSWindow?
+
+    init(url: URL, window: NSWindow) {
+        self.url = url
+        self.previousWindow = window
+        self.previousFirstResponder = window.firstResponder
+        super.init(frame: .zero)
+    }
+
+    required init?(coder: NSCoder) { fatalError("init(coder:) has not been implemented") }
+
+    override var acceptsFirstResponder: Bool { true }
+
+    override func acceptsPreviewPanelControl(_ panel: QLPreviewPanel) -> Bool { true }
+
+    override func beginPreviewPanelControl(_ panel: QLPreviewPanel) {
+        panel.dataSource = self
+    }
+
+    override func endPreviewPanelControl(_ panel: QLPreviewPanel) {
+        panel.dataSource = nil
+        let win = previousWindow
+        let prev = previousFirstResponder
+        DispatchQueue.main.async { [weak self] in
+            win?.makeFirstResponder(prev)
+            self?.removeFromSuperview()
+        }
+    }
+
+    func numberOfPreviewItems(in panel: QLPreviewPanel!) -> Int { 1 }
+
+    func previewPanel(_ panel: QLPreviewPanel!, previewItemAt index: Int) -> QLPreviewItem! {
+        url as QLPreviewItem
+    }
+}

macos/Classes/NativePlugin.swift

@@ -0,0 +1,18 @@
+import FlutterMacOS
+import AppKit
+
+public protocol NativePlugin {
+    func register(with registrar: FlutterPluginRegistrar)
+}
+
+public enum UxWindow {
+    public static var keyWindow: NSWindow? {
+        NSApp.keyWindow ?? NSApp.mainWindow
+    }
+
+    /// FlutterViewController's view. Used as the anchor for
+    /// `NSSharingServicePicker` popovers.
+    public static var flutterView: NSView? {
+        keyWindow?.contentViewController?.view
+    }
+}

macos/Classes/UxPlugin.swift

@@ -0,0 +1,19 @@
+import FlutterMacOS
+import AppKit
+
+public class UxPlugin: NSObject, FlutterPlugin {
+    private static var plugins: [NativePlugin] = []
+
+    public static func register(with registrar: FlutterPluginRegistrar) {
+        plugins = [
+            FilePlugin(),
+        ]
+        for plugin in plugins {
+            plugin.register(with: registrar)
+        }
+    }
+
+    public func handle(_ call: FlutterMethodCall, result: @escaping FlutterResult) {
+        result(FlutterMethodNotImplemented)
+    }
+}