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Replace script thread root browsing context by a collection of documents.

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This commit is contained in:
Alan Jeffrey 2016-10-07 15:52:49 -05:00
parent dae007fd16
commit 90e9c910f4
8 changed files with 494 additions and 668 deletions
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83
components/script/dom/browsingcontext.rs
View file

@ -2,7 +2,6 @@
* 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::cell::DOMRefCell;
use dom::bindings::conversions::{ToJSValConvertible, root_from_handleobject};
use dom::bindings::inheritance::Castable;
use dom::bindings::js::{JS, MutNullableHeap, Root, RootedReference};
@ -37,15 +36,9 @@ use std::cell::Cell;
pub struct BrowsingContext {
reflector: Reflector,
/// Pipeline id associated with this context.
id: PipelineId,
/// Indicates if reflow is required when reloading.
needs_reflow: Cell<bool>,
/// Stores the child browsing contexts (ex. iframe browsing context)
children: DOMRefCell<Vec<JS<BrowsingContext>>>,
/// The current active document.
/// Note that the session history is stored in the constellation,
/// in the script thread we just track the current active document.
@ -56,19 +49,17 @@ pub struct BrowsingContext {
}
impl BrowsingContext {
pub fn new_inherited(frame_element: Option<&Element>, id: PipelineId) -> BrowsingContext {
pub fn new_inherited(frame_element: Option<&Element>) -> BrowsingContext {
BrowsingContext {
reflector: Reflector::new(),
id: id,
needs_reflow: Cell::new(true),
children: DOMRefCell::new(vec![]),
active_document: Default::default(),
frame_element: frame_element.map(JS::from_ref),
}
}
#[allow(unsafe_code)]
pub fn new(window: &Window, frame_element: Option<&Element>, id: PipelineId) -> Root<BrowsingContext> {
pub fn new(window: &Window, frame_element: Option<&Element>) -> Root<BrowsingContext> {
unsafe {
let WindowProxyHandler(handler) = window.windowproxy_handler();
assert!(!handler.is_null());
@ -81,7 +72,7 @@ impl BrowsingContext {
rooted!(in(cx) let window_proxy = NewWindowProxy(cx, parent, handler));
assert!(!window_proxy.is_null());
let object = box BrowsingContext::new_inherited(frame_element, id);
let object = box BrowsingContext::new_inherited(frame_element);
let raw = Box::into_raw(object);
SetProxyExtra(window_proxy.get(), 0, &PrivateValue(raw as *const _));
@ -118,82 +109,20 @@ impl BrowsingContext {
window_proxy.get()
}
pub fn remove(&self, id: PipelineId) -> Option<Root<BrowsingContext>> {
let remove_idx = self.children
.borrow()
.iter()
.position(|context| context.id == id);
match remove_idx {
Some(idx) => Some(Root::from_ref(&*self.children.borrow_mut().remove(idx))),
None => {
self.children
.borrow_mut()
.iter_mut()
.filter_map(|context| context.remove(id))
.next()
}
}
}
pub fn set_reflow_status(&self, status: bool) -> bool {
let old = self.needs_reflow.get();
self.needs_reflow.set(status);
old
}
pub fn pipeline_id(&self) -> PipelineId {
self.id
}
pub fn push_child_context(&self, context: &BrowsingContext) {
self.children.borrow_mut().push(JS::from_ref(&context));
}
pub fn find_child_by_id(&self, pipeline_id: PipelineId) -> Option<Root<Window>> {
self.children.borrow().iter().find(|context| {
let window = context.active_window();
window.upcast::<GlobalScope>().pipeline_id() == pipeline_id
}).map(|context| context.active_window())
pub fn active_pipeline_id(&self) -> Option<PipelineId> {
self.active_document.get()
.map(|doc| doc.window().upcast::<GlobalScope>().pipeline_id())
}
pub fn unset_active_document(&self) {
self.active_document.set(None)
}
pub fn iter(&self) -> ContextIterator {
ContextIterator {
stack: vec!(Root::from_ref(self)),
}
}
pub fn find(&self, id: PipelineId) -> Option<Root<BrowsingContext>> {
if self.id == id {
return Some(Root::from_ref(self));
}
self.children.borrow()
.iter()
.filter_map(|c| c.find(id))
.next()
}
}
pub struct ContextIterator {
stack: Vec<Root<BrowsingContext>>,
}
impl Iterator for ContextIterator {
type Item = Root<BrowsingContext>;
fn next(&mut self) -> Option<Root<BrowsingContext>> {
let popped = self.stack.pop();
if let Some(ref context) = popped {
self.stack.extend(context.children.borrow()
.iter()
.map(|c| Root::from_ref(&**c)));
}
popped
}
}
#[allow(unsafe_code)]