Struct pushrod::core::callbacks::CallbackStore

pub struct CallbackStore { /* fields omitted */ }

This is the CallbackStore that is used to store a list of CallbackTypes that are triggered when an action occurs on a Widget.

Methods

impl CallbackStore

The actual class implementation of the CallbackStore. This is primarily stored within the Widget class, and its usage looks something similar to the following code:

    let mut cs = CallbackStore::new();

    cs.put(CALLBACK_MOUSE_MOVED,
        CallbackTypes::PointCallback { callback: Box::new(|widget_id, point| {
            eprintln!("Callback for widget {} resulted in point at {} x {}",
                widget_id, point.x, point.y);
        })
    });

    // And, to call the callback to run it:

    match cs.get(CALLBACK_MOUSE_MOVED) {
        CallbackTypes::PointCallback { callback } =>
            callback(12, Point { x: 16, y: 24 }),
        _ => eprintln!("Unsupported callback for ID {}!", CALLBACK_MOUSE_MOVED),
    }

This is an example of how it would be used in the Widget callbacks. User-specified callbacks will likely be much simpler than this.

pub fn new() -> Self

pub fn put(&mut self, id: u32, func: CallbackTypes)

pub fn get(&mut self, id: u32) -> &CallbackTypes