fune/servo/components/script/task_source/user_interaction.rs
Connor Brewster e82a09e24a servo: Merge #12404 - Clean up task sources and make all tasks cancellable (from cbrewster:task_source_cleanup); r=asajeffrey
<!-- Please describe your changes on the following line: -->
This makes it so each task is a thin wrapper over a runnable and whenever a task is queued, it is automatically wrapped by the window's `runnable_wrapper`.

---
<!-- Thank you for contributing to Servo! Please replace each `[ ]` by `[X]` when the step is complete, and replace `__` with appropriate data: -->
- [X] `./mach build -d` does not report any errors
- [X] `./mach test-tidy` does not report any errors
- [X] These changes fix  #11703 (github issue number if applicable).

<!-- Either: -->
- [ ] There are tests for these changes OR
- [ ] These changes do not require tests because _____

<!-- Pull requests that do not address these steps are welcome, but they will require additional verification as part of the review process. -->

Source-Repo: https://github.com/servo/servo
Source-Revision: 3011d4b450b107f87fab54f6c59245ac1478fa79
2016-07-13 10:18:15 -07:00

51 lines
1.7 KiB
Rust

/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
use dom::bindings::refcounted::Trusted;
use dom::event::{EventBubbles, EventCancelable, EventRunnable};
use dom::eventtarget::EventTarget;
use dom::window::Window;
use script_thread::{MainThreadScriptMsg, Runnable, ScriptThread};
use std::result::Result;
use std::sync::mpsc::Sender;
use string_cache::Atom;
use task_source::TaskSource;
#[derive(JSTraceable, Clone)]
pub struct UserInteractionTaskSource(pub Sender<MainThreadScriptMsg>);
impl TaskSource for UserInteractionTaskSource {
fn queue<T: Runnable + Send + 'static>(&self, msg: Box<T>, window: &Window) -> Result<(), ()> {
let msg = UserInteractionTask(window.get_runnable_wrapper().wrap_runnable(msg));
self.0.send(MainThreadScriptMsg::UserInteraction(msg)).map_err(|_| ())
}
}
impl UserInteractionTaskSource {
pub fn queue_event(&self,
target: &EventTarget,
name: Atom,
bubbles: EventBubbles,
cancelable: EventCancelable,
window: &Window) {
let target = Trusted::new(target);
let runnable = box EventRunnable {
target: target,
name: name,
bubbles: bubbles,
cancelable: cancelable,
};
let _ = self.queue(runnable, window);
}
}
pub struct UserInteractionTask(pub Box<Runnable + Send>);
impl UserInteractionTask {
pub fn handle_task(self, script_thread: &ScriptThread) {
if !self.0.is_cancelled() {
self.0.main_thread_handler(script_thread);
}
}
}