Struct WidgetDriverHandle

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pub struct WidgetDriverHandle { /* private fields */ }

Available on crate feature experimental-widgets only.

Expand description

A handle that encapsulates the communication between a widget driver and the corresponding widget (inside a webview or iframe).

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impl WidgetDriverHandle

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pub async fn recv(&self) -> Option<String>

Receive a message from the widget driver.

The message must be passed on to the widget.

Returns None if the widget driver is no longer running.

Despite this method takes a shared reference to self with &self, there is an inner lock around the receiver. They can be only one receiver at a time. Be aware if recv is waiting in a loop for example. This design addresses one particular need where WidgetDriverHandle lives inside an Arc to be cloned and passed in 2 tasks: one calling send, one calling recv. In that case, there is no conflict.

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pub fn send(&self, message: String) -> bool

Send a message from the widget to the widget driver.

Returns false if the widget driver is no longer running.

Trait Implementations§

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impl Debug for WidgetDriverHandle

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fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter. Read more

Auto Trait Implementations§

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impl UnwindSafe for WidgetDriverHandle

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fn new_handle(value: Arc<T>) -> Handle

Create a new handle for an Arc value Read more

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unsafe fn clone_handle(handle: Handle) -> Handle

Clone a handle Read more

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unsafe fn consume_handle(handle: Handle) -> Arc<T> ⓘ

Consume a handle, getting back the initial Arc<> Read more

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