How to pass events across controls?

[buliangshuai0013]

GPUI怎么跨控件传递事件。让另一控件接收事件响应。由于view_a,和view_b都有一层包裹。比如作为dock的child。怎么让btn按钮点击，element_c跟着响应。

1 由于都有一层包裹：mainwindow 不能直接访问view_a和view_b,导致emit subscribe使用不方便。
2 我尝试用windows.dispatch_action也接收不到消息。

GPUI有没有好的方法能够实现？

How to pass events across controls in GPUI and have another control receive and respond to the event. Since both view_a and view_b are wrapped (e.g., as children of a dock), how can we make the btn button click and have element_c respond accordingly?

Due to both being wrapped: mainwindow cannot directly access view_a and view_b, making it inconvenient to use emit and subscribe.

I've tried using windows.dispatch_action but still can't receive the message.

Does GPUI have a good way to achieve this?

[zhangsan-feng]

gpui 提供了类似全局state的东西 a使用update b使用subscribe 就能获取到了
例如
A:
let state_handle = cx.global::().0.clone();
state_handle.update(cx, |state, state_cx| {
});
B:
cx.subscribe(&state_handle, |this: &mut Self, _model, event: &ChatMessage, cx| {
match event {
}
_ => {}
}
cx.notify();

    }).detach();
    cx 是 cx: &mut Context<Self>