feat: improve chat input, themed menus and agent proposal cancellation

src/main/chatTextMenu.ts

@@ -1,6 +1,29 @@
 import { BrowserWindow, clipboard, Menu } from 'electron'
 import type { IpcMainInvokeEvent, MenuItemConstructorOptions } from 'electron'
-import type { ChatTextMenuAction, ChatTextMenuOptions } from '../shared/chatTextMenu'
+import type { ChatClipboardAction, ChatTextMenuAction, ChatTextMenuOptions } from '../shared/chatTextMenu'
+
+function trustedChatFrame(event: IpcMainInvokeEvent): boolean {
+  if (event.sender.isDestroyed() || event.senderFrame !== event.sender.mainFrame) return false
+  const window = BrowserWindow.fromWebContents(event.sender)
+  return Boolean(window && !window.isDestroyed())
+}
+
+export function readChatClipboardState(event: IpcMainInvokeEvent): { hasText: boolean } {
+  return { hasText: trustedChatFrame(event) && clipboard.readText().length > 0 }
+}
+
+export function performChatClipboardAction(event: IpcMainInvokeEvent, input: ChatClipboardAction): boolean {
+  if (!trustedChatFrame(event) || !input) return false
+  if (input.action === 'copy' && typeof input.text === 'string' && input.text.length > 0 && input.text.length <= 5_000_000) {
+    clipboard.writeText(input.text)
+    return true
+  }
+  if (input.action === 'paste' && clipboard.readText().length > 0) {
+    event.sender.paste()
+    return true
+  }
+  return false
+}
 
 export function showChatTextMenu(event: IpcMainInvokeEvent, input: ChatTextMenuOptions): Promise<ChatTextMenuAction> | null {
   if (!input || !['message', 'input'].includes(input.kind) || event.sender.isDestroyed() || event.senderFrame !== event.sender.mainFrame) return null