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30 lines
1.1 KiB
Rust
30 lines
1.1 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 https://mozilla.org/MPL/2.0/. */
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use crate::script_runtime::{CommonScriptMsg, ScriptThreadEventCategory};
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use crate::script_thread::MainThreadScriptMsg;
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use crate::task::{TaskCanceller, TaskOnce};
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use crate::task_source::{TaskSource, TaskSourceName};
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use crossbeam_channel::Sender;
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use msg::constellation_msg::PipelineId;
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#[derive(Clone, JSTraceable)]
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pub struct HistoryTraversalTaskSource(pub Sender<MainThreadScriptMsg>, pub PipelineId);
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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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