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Avoid an index-out-of-bounds error in ScriptMemoryFailsafe.

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Fixes #11059.
Fixes #11400.
Fixes #11481.
Fixes #11671.
Fixes #11682.
This commit is contained in:
Ms2ger 2016-06-09 14:49:55 +02:00
parent 77e0089c12
commit 7455dc4a50
2 changed files with 10 additions and 2 deletions
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6
components/script/dom/browsingcontext.rs
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@ -108,6 +108,12 @@ impl BrowsingContext {
Root::from_ref(&self.history.borrow()[self.active_index.get()].document)
}
pub fn maybe_active_document(&self) -> Option<Root<Document>> {
self.history.borrow().get(self.active_index.get()).map(|entry| {
Root::from_ref(&*entry.document)
})
}
pub fn active_window(&self) -> Root<Window> {
Root::from_ref(self.active_document().window())
}