51 lines
1.8 KiB
TypeScript
51 lines
1.8 KiB
TypeScript
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import type { Terminal as XTerm } from "@xterm/xterm";
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import type { KittyKeyboardEvent } from "./kittyKeyboardProtocol";
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export const dispatchWin32InputModeEvent = (
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term: Pick<XTerm, "textarea">,
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event: KittyKeyboardEvent,
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): boolean => {
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const textarea = term.textarea;
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const KeyboardEventConstructor = textarea?.ownerDocument.defaultView?.KeyboardEvent;
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if (!textarea || !KeyboardEventConstructor) return false;
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const syntheticEvent = new KeyboardEventConstructor(event.type ?? "keydown", {
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key: event.key,
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code: event.code,
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location: event.location,
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repeat: event.repeat,
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isComposing: event.isComposing,
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shiftKey: event.shiftKey,
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altKey: event.altKey,
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ctrlKey: event.ctrlKey,
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metaKey: event.metaKey,
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bubbles: true,
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cancelable: true,
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});
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if (event.keyCode !== undefined && syntheticEvent.keyCode !== event.keyCode) {
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Object.defineProperty(syntheticEvent, "keyCode", { value: event.keyCode });
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}
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if (event.getModifierState) {
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Object.defineProperty(syntheticEvent, "getModifierState", {
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value: (key: string) => event.getModifierState?.(key) === true,
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});
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}
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// xterm's internal CoreBrowserTerminal focuses its textarea for key-up
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// events. A broadcast is transport, not user focus navigation, so suppress
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// that synchronous DOM focus side effect while the target encodes the event.
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const ownFocus = Object.getOwnPropertyDescriptor(textarea, "focus");
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Object.defineProperty(textarea, "focus", {
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value: () => undefined,
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configurable: true,
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});
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try {
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textarea.dispatchEvent(syntheticEvent);
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} finally {
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if (ownFocus) Object.defineProperty(textarea, "focus", ownFocus);
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else delete (textarea as HTMLTextAreaElement & { focus?: () => void }).focus;
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}
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return true;
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};
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