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return Option from GlobalScope::current

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handles the case where GlobalScope::current calls CurrentGlobalOrNull
and the result is null
This commit is contained in:
Jyotsna Prakash 2017-06-21 20:34:21 -07:00
parent dfc44a0d35
commit 433cd90bc3
4 changed files with 10 additions and 6 deletions
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8
components/script/dom/globalscope.rs
View file

@ -543,12 +543,16 @@ impl GlobalScope {
///
/// ["current"]: https://html.spec.whatwg.org/multipage/#current
#[allow(unsafe_code)]
pub fn current() -> Root<Self> {
pub fn current() -> Option<Root<Self>> {
unsafe {
let cx = Runtime::get();
assert!(!cx.is_null());
let global = CurrentGlobalOrNull(cx);
global_scope_from_global(global)
if global.is_null() {
None
} else {
Some(global_scope_from_global(global))
}
}
}

2
components/script/dom/htmliframeelement.rs
View file

@ -590,7 +590,7 @@ impl HTMLIFrameElementMethods for HTMLIFrameElement {
Some(document) => document,
};
// Step 4.
let current = GlobalScope::current().as_window().Document();
let current = GlobalScope::current().expect("No current global object").as_window().Document();
if !current.origin().same_origin_domain(document.origin()) {
return None;
}

4
components/script/dom/permissions.rs
View file

@ -241,7 +241,7 @@ impl PermissionAlgorithm for Permissions {
let state =
prompt_user(&format!("{} {} ?", REQUEST_DIALOG_MESSAGE, perm_name.clone()));
let globalscope = GlobalScope::current();
let globalscope = GlobalScope::current().expect("No current global object");
globalscope.as_window()
.permission_state_invocation_results()
.borrow_mut()
@ -266,7 +266,7 @@ pub fn get_descriptor_permission_state(permission_name: PermissionName,
// Step 1.
let settings = match env_settings_obj {
Some(env_settings_obj) => Root::from_ref(env_settings_obj),
None => GlobalScope::current(),
None => GlobalScope::current().expect("No current global object"),
};
// Step 2.

2
components/script/dom/window.rs
View file

@ -586,7 +586,7 @@ impl WindowMethods for Window {
};
// Step 6.
let container_doc = document_from_node(container);
let current_doc = GlobalScope::current().as_window().Document();
let current_doc = GlobalScope::current().expect("No current global object").as_window().Document();
if !current_doc.origin().same_origin_domain(container_doc.origin()) {
return None;
}