1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
|
/* 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::LocationMethods;
use dom::bindings::codegen::Bindings::WindowBinding::WindowMethods;
use dom::bindings::js::{JS, Root};
use dom::bindings::reflector::{Reflector, reflect_dom_object};
use dom::window::Window;
use ipc_channel::ipc;
use msg::constellation_msg::TraversalDirection;
use script_traits::ScriptMsg as ConstellationMsg;
// https://html.spec.whatwg.org/multipage/#the-history-interface
#[dom_struct]
pub struct History {
reflector_: Reflector,
window: JS<Window>,
}
impl History {
pub fn new_inherited(window: &Window) -> History {
History {
reflector_: Reflector::new(),
window: JS::from_ref(&window),
}
}
pub fn new(window: &Window) -> Root<History> {
reflect_dom_object(box History::new_inherited(window),
window,
HistoryBinding::Wrap)
}
}
impl History {
fn traverse_history(&self, direction: TraversalDirection) {
let pipeline = self.window.pipeline_id();
let msg = ConstellationMsg::TraverseHistory(Some(pipeline), direction);
let _ = self.window.constellation_chan().send(msg);
}
}
impl HistoryMethods for History {
// https://html.spec.whatwg.org/multipage/#dom-history-length
fn Length(&self) -> u32 {
let pipeline = self.window.pipeline_id();
let (sender, recv) = ipc::channel().expect("Failed to create channel to send jsh length.");
let msg = ConstellationMsg::JointSessionHistoryLength(pipeline, sender);
let _ = self.window.constellation_chan().send(msg);
recv.recv().unwrap()
}
// https://html.spec.whatwg.org/multipage/#dom-history-go
fn Go(&self, delta: i32) {
let direction = if delta > 0 {
TraversalDirection::Forward(delta as usize)
} else if delta < 0 {
TraversalDirection::Back(-delta as usize)
} else {
self.window.Location().Reload();
return;
};
self.traverse_history(direction);
}
// https://html.spec.whatwg.org/multipage/#dom-history-back
fn Back(&self) {
self.traverse_history(TraversalDirection::Back(1));
}
// https://html.spec.whatwg.org/multipage/#dom-history-forward
fn Forward(&self) {
self.traverse_history(TraversalDirection::Forward(1));
}
}
|
