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https://github.com/servo/servo.git
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42 lines
1.5 KiB
Rust
42 lines
1.5 KiB
Rust
/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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use msg::constellation_msg::PipelineId;
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use script_runtime::{CommonScriptMsg, ScriptChan, ScriptThreadEventCategory};
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use script_thread::MainThreadScriptMsg;
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use servo_channel::Sender;
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use task::{TaskCanceller, TaskOnce};
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use task_source::{TaskSource, TaskSourceName};
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#[derive(JSTraceable)]
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pub struct HistoryTraversalTaskSource(pub Sender<MainThreadScriptMsg>, pub PipelineId);
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impl ScriptChan for HistoryTraversalTaskSource {
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fn send(&self, msg: CommonScriptMsg) -> Result<(), ()> {
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self.0
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.send(MainThreadScriptMsg::Common(msg))
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.map_err(|_| ())
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}
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fn clone(&self) -> Box<ScriptChan + Send> {
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Box::new(HistoryTraversalTaskSource((&self.0).clone(), (&self.1).clone()))
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}
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}
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impl TaskSource for HistoryTraversalTaskSource {
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const NAME: TaskSourceName = TaskSourceName::HistoryTraversal;
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fn queue_with_canceller<T>(&self, task: T, canceller: &TaskCanceller) -> Result<(), ()>
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where
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T: TaskOnce + 'static,
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{
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let msg = MainThreadScriptMsg::Common(CommonScriptMsg::Task(
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ScriptThreadEventCategory::HistoryEvent,
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Box::new(canceller.wrap_task(task)),
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Some(self.1),
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HistoryTraversalTaskSource::NAME,
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));
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self.0.send(msg).map_err(|_| ())
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}
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}
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