From b595c2abbf191a164053cbf7471acbfd990cfdc1 Mon Sep 17 00:00:00 2001
From: Jens Reimann <jreimann@redhat.com>
Date: Sun, 2 Aug 2020 23:01:59 +0200
Subject: [PATCH] Fix issue #1463
---
yew/src/html/scope.rs | 20 +++++++++++++++++++-
1 file changed, 19 insertions(+), 1 deletion(-)
diff --git a/yew/src/html/scope.rs b/yew/src/html/scope.rs
index 2bce25b687a..b3be1688d7f 100644
--- a/yew/src/html/scope.rs
+++ b/yew/src/html/scope.rs
@@ -231,7 +231,7 @@ impl<COMP: Component> Scope<COMP> {
closure.into()
}
- /// Creates a `Callback` from a FnOnce which will send a message
+ /// Creates a `Callback` from an `FnOnce` which will send a message
/// to the linked component's update method when invoked.
///
/// Please be aware that currently the result of this callback
@@ -267,6 +267,24 @@ impl<COMP: Component> Scope<COMP> {
};
closure.into()
}
+
+ /// Creates a `Callback` from an `FnOnce` which will send a batch of messages back
+ /// to the linked component's update method when invoked.
+ ///
+ /// Please be aware that currently the results of these callbacks
+ /// will synchronously schedule calls to the
+ /// [Component](Component) interface.
+ pub fn batch_callback_once<F, IN>(&self, function: F) -> Callback<IN>
+ where
+ F: FnOnce(IN) -> Vec<COMP::Message> + 'static,
+ {
+ let scope = self.clone();
+ let closure = move |input| {
+ let messages = function(input);
+ scope.send_message_batch(messages);
+ };
+ Callback::once(closure)
+ }
}
struct ComponentState<COMP: Component> {