mirror of
https://github.com/servo/servo.git
synced 2025-06-06 16:45:39 +00:00
f87c2a8d76
In a later PR, DomRoot<T> will become a type alias of Root<Dom<T>>, where Root<T> will be able to handle all the things that need to be rooted that have a stable traceable address that doesn't move for the whole lifetime of the root. Stay tuned.
87 lines
3 KiB
Rust
87 lines
3 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::codegen::Bindings::HistoryBinding;
|
|
use dom::bindings::codegen::Bindings::HistoryBinding::HistoryMethods;
|
|
use dom::bindings::codegen::Bindings::LocationBinding::LocationBinding::LocationMethods;
|
|
use dom::bindings::codegen::Bindings::WindowBinding::WindowMethods;
|
|
use dom::bindings::error::{Error, ErrorResult, Fallible};
|
|
use dom::bindings::inheritance::Castable;
|
|
use dom::bindings::reflector::{Reflector, reflect_dom_object};
|
|
use dom::bindings::root::{Dom, DomRoot};
|
|
use dom::globalscope::GlobalScope;
|
|
use dom::window::Window;
|
|
use dom_struct::dom_struct;
|
|
use ipc_channel::ipc;
|
|
use msg::constellation_msg::TraversalDirection;
|
|
use script_traits::ScriptMsg;
|
|
|
|
// https://html.spec.whatwg.org/multipage/#the-history-interface
|
|
#[dom_struct]
|
|
pub struct History {
|
|
reflector_: Reflector,
|
|
window: Dom<Window>,
|
|
}
|
|
|
|
impl History {
|
|
pub fn new_inherited(window: &Window) -> History {
|
|
History {
|
|
reflector_: Reflector::new(),
|
|
window: Dom::from_ref(&window),
|
|
}
|
|
}
|
|
|
|
pub fn new(window: &Window) -> DomRoot<History> {
|
|
reflect_dom_object(box History::new_inherited(window),
|
|
window,
|
|
HistoryBinding::Wrap)
|
|
}
|
|
}
|
|
|
|
impl History {
|
|
fn traverse_history(&self, direction: TraversalDirection) -> ErrorResult {
|
|
if !self.window.Document().is_fully_active() {
|
|
return Err(Error::Security);
|
|
}
|
|
let msg = ScriptMsg::TraverseHistory(direction);
|
|
let _ = self.window.upcast::<GlobalScope>().script_to_constellation_chan().send(msg);
|
|
Ok(())
|
|
}
|
|
}
|
|
|
|
impl HistoryMethods for History {
|
|
// https://html.spec.whatwg.org/multipage/#dom-history-length
|
|
fn GetLength(&self) -> Fallible<u32> {
|
|
if !self.window.Document().is_fully_active() {
|
|
return Err(Error::Security);
|
|
}
|
|
let (sender, recv) = ipc::channel().expect("Failed to create channel to send jsh length.");
|
|
let msg = ScriptMsg::JointSessionHistoryLength(sender);
|
|
let _ = self.window.upcast::<GlobalScope>().script_to_constellation_chan().send(msg);
|
|
Ok(recv.recv().unwrap())
|
|
}
|
|
|
|
// https://html.spec.whatwg.org/multipage/#dom-history-go
|
|
fn Go(&self, delta: i32) -> ErrorResult {
|
|
let direction = if delta > 0 {
|
|
TraversalDirection::Forward(delta as usize)
|
|
} else if delta < 0 {
|
|
TraversalDirection::Back(-delta as usize)
|
|
} else {
|
|
return self.window.Location().Reload();
|
|
};
|
|
|
|
self.traverse_history(direction)
|
|
}
|
|
|
|
// https://html.spec.whatwg.org/multipage/#dom-history-back
|
|
fn Back(&self) -> ErrorResult {
|
|
self.traverse_history(TraversalDirection::Back(1))
|
|
}
|
|
|
|
// https://html.spec.whatwg.org/multipage/#dom-history-forward
|
|
fn Forward(&self) -> ErrorResult {
|
|
self.traverse_history(TraversalDirection::Forward(1))
|
|
}
|
|
}
|