feat: add expandable file and link controls to playlist

Checks/app-startup.swift

@@ -185,10 +185,12 @@ private enum WindowDragCheck {
     static func run(result: URL) {
         resultURL = result
         _ = NSApplication.shared
+        if CommandLine.arguments.contains("--queue-add-only") { probe = 12 }
         timer = Timer.scheduledTimer(withTimeInterval: 0.05, repeats: true) { _ in
             MainActor.assumeIsolated { advance() }
         }
         RunLoop.main.add(timer!, forMode: .common)
+        RunLoop.main.add(timer!, forMode: .modalPanel)
         terebiAppMain()
     }
 
@@ -230,6 +232,18 @@ private enum WindowDragCheck {
         }
     }
 
+    static func clickQueueAdd(in window: NSWindow, link: Bool) {
+        for type in [NSEvent.EventType.leftMouseDown, .leftMouseUp] {
+            let event = NSEvent.mouseEvent(with: type,
+                location: NSPoint(x: window.contentView!.bounds.width - (link ? 163 : 183), y: 18),
+                modifierFlags: [], timestamp: ProcessInfo.processInfo.systemUptime,
+                windowNumber: window.windowNumber, context: nil,
+                eventNumber: 1000 + phase * 2 + (type == .leftMouseDown ? 0 : 1),
+                clickCount: 1, pressure: type == .leftMouseDown ? 1 : 0)!
+            NSApp.postEvent(NSEvent(cgEvent: event.cgEvent!)!, atStart: false)
+        }
+    }
+
     static func point(in window: NSWindow) -> NSPoint? {
         let content = window.contentView!
         let w = content.bounds.width
@@ -303,6 +317,7 @@ private enum WindowDragCheck {
             interceptDrags(in: window)
             model.setVolume(0)
             model.setPlayback(playing: false)
+            if CommandLine.arguments.contains("--queue-add-only") { model.showsQueue = true }
             window.makeKeyAndOrderFront(nil)
             window.makeMain()
             NSApp.activate(ignoringOtherApps: true)
@@ -365,6 +380,12 @@ private enum WindowDragCheck {
                 phase = 7
                 return
             }
+            if probe == 12 {
+                urlWindowFrame = window.frame
+                clickQueueAdd(in: window, link: false)
+                phase = 7
+                return
+            }
             probe += 1
             if probe == names.count { finish(); return }
             phase = 0
@@ -387,6 +408,48 @@ private enum WindowDragCheck {
             probe += 1
             phase = 0
             return
+        } else if probe == 12 && phase == 7 {
+            guard NSApp.modalWindow == nil else { finish("Queue + opened the file picker instead of expanding"); return }
+            clickQueueAdd(in: window, link: true)
+        } else if probe == 12 && phase == 8 {
+            guard let editor = window.firstResponder as? NSTextView, editor.isFieldEditor else { return }
+            editor.insertText(urlDraft, replacementRange: NSRange(location: NSNotFound, length: 0))
+            clickQueueAdd(in: window, link: true)
+        } else if probe == 12 && phase == 9 {
+            guard nativeView(in: window.contentView!, matching: { ($0 as? NSTextField)?.isEditable == true }) == nil else { return }
+            guard (window.firstResponder as? NSTextView)?.isFieldEditor != true else {
+                finish("Collapsing the queue URL field retained keyboard focus"); return
+            }
+            clickQueueAdd(in: window, link: true)
+        } else if probe == 12 && phase == 10 {
+            guard let editor = window.firstResponder as? NSTextView, editor.isFieldEditor else { return }
+            guard editor.string == urlDraft else { finish("Reopening queue URL input lost its draft"); return }
+            let escape = NSEvent.keyEvent(with: .keyDown, location: .zero, modifierFlags: [],
+                timestamp: ProcessInfo.processInfo.systemUptime, windowNumber: window.windowNumber,
+                context: nil, characters: "\u{1b}", charactersIgnoringModifiers: "\u{1b}", isARepeat: false, keyCode: 53)!
+            NSApp.postEvent(escape, atStart: false)
+        } else if probe == 12 && phase == 11 {
+            guard nativeView(in: window.contentView!, matching: { ($0 as? NSTextField)?.isEditable == true }) == nil else { return }
+            guard (window.firstResponder as? NSTextView)?.isFieldEditor != true,
+                  window.frame == urlWindowFrame, drags == previousDrags else {
+                finish("Queue URL transitions retained focus, resized or dragged the window"); return
+            }
+            clickQueueAdd(in: window, link: false)
+        } else if probe == 12 && phase == 12 {
+            clickQueueAdd(in: window, link: false)
+        } else if probe == 12 && phase == 13 {
+            guard let panel = NSApp.modalWindow as? NSOpenPanel else { return }
+            guard panel.allowsMultipleSelection && panel.prompt == "Add to Queue" else {
+                panel.cancel(nil)
+                finish("Queue file icon did not open the multi-file queue picker"); return
+            }
+            panel.cancel(nil)
+        } else if probe == 12 && phase == 14 {
+            guard NSApp.modalWindow == nil else { return }
+            probe += 1
+            if CommandLine.arguments.contains("--queue-add-only") { finish(); return }
+            phase = 0
+            return
         }
         phase += 1
     }