zulip/static/js/keydown_util.ts

34 lines
703 B
TypeScript

/*
See hotkey.js for handlers that are more app-wide.
*/
export const vim_left = "h";
export const vim_down = "j";
export const vim_up = "k";
export const vim_right = "l";
export function handle(opts: {
elem: JQuery;
handlers: {
[handler: string]: (() => boolean) | undefined;
};
}): void {
opts.elem.on("keydown", (e) => {
if (e.altKey || e.ctrlKey || e.shiftKey) {
return;
}
const {key} = e;
const handler = opts.handlers[key];
if (!handler) {
return;
}
const handled = handler();
if (handled) {
e.preventDefault();
e.stopPropagation();
}
});
}