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Implement dissimilar-origin window.parent and window.top.

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This commit is contained in:
Alan Jeffrey 2017-03-01 12:00:33 -06:00
parent 0b590aeed7
commit 6bcb5f68be
9 changed files with 207 additions and 87 deletions
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50
components/script/dom/window.rs
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@ -42,7 +42,7 @@ use dom::location::Location;
use dom::mediaquerylist::{MediaQueryList, WeakMediaQueryListVec};
use dom::messageevent::MessageEvent;
use dom::navigator::Navigator;
use dom::node::{Node, NodeDamage, document_from_node, from_untrusted_node_address, window_from_node};
use dom::node::{Node, NodeDamage, document_from_node, from_untrusted_node_address};
use dom::performance::Performance;
use dom::promise::Promise;
use dom::screen::Screen;
@ -631,31 +631,35 @@ impl WindowMethods for Window {
// https://html.spec.whatwg.org/multipage/#dom-parent
fn GetParent(&self) -> Option<Root<BrowsingContext>> {
// Steps 1. and 2.
if self.maybe_browsing_context().map_or(true, |c| c.is_discarded()) {
// Steps 1-3.
let context = match self.maybe_browsing_context() {
Some(context) => context,
None => return None,
};
if context.is_discarded() {
return None;
}
match self.parent() {
// Step 4.
Some(parent) => Some(parent.Window()),
// Step 5.
None => Some(self.Window())
// Step 4.
if let Some(parent) = context.parent() {
return Some(Root::from_ref(parent));
}
}
// Step 5.
Some(context)
}
// https://html.spec.whatwg.org/multipage/#dom-top
fn GetTop(&self) -> Option<Root<BrowsingContext>> {
// Steps 1. and 2.
if self.maybe_browsing_context().map_or(true, |c| c.is_discarded()) {
// Steps 1-3.
let context = match self.maybe_browsing_context() {
Some(context) => context,
None => return None,
};
if context.is_discarded() {
return None;
}
// Step 5.
let mut window = Root::from_ref(self);
while let Some(parent) = window.parent() {
window = parent;
}
Some(window.Window())
}
// Steps 4-5.
Some(Root::from_ref(context.top()))
}
// https://dvcs.w3.org/hg/webperf/raw-file/tip/specs/
// NavigationTiming/Overview.html#sec-window.performance-attribute
@ -1657,16 +1661,6 @@ impl Window {
}
}
// https://html.spec.whatwg.org/multipage/#parent-browsing-context
pub fn parent(&self) -> Option<Root<Window>> {
if self.is_top_level() {
return None;
}
self.browsing_context().frame_element()
.map(|frame_element| window_from_node(frame_element))
}
/// Returns whether this window is mozbrowser.
pub fn is_mozbrowser(&self) -> bool {
PREFS.is_mozbrowser_enabled() && self.parent_info().is_none()