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current frame tree is copied upon subframe navigation to prevent changes from being transitively received

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This commit is contained in:
Tim Kuehn 2013-07-30 22:26:00 -07:00
parent 2348fbf46d
commit 959ed774b4
1 changed files with 7 additions and 6 deletions
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13
src/components/main/constellation.rs
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@ -409,6 +409,11 @@ impl Constellation {
LoadUrlMsg(source_id, url, size_future) => {
debug!("received message to load %s", url::to_str(&url));
// Make sure no pending page would be overridden.
let source_frame = self.current_frame().get_ref().find_mut(source_id).expect(
"Constellation: received a LoadUrlMsg from a pipeline_id associated
with a pipeline not in the active frame tree. This should be
impossible.");
for self.pending_frames.iter().advance |frame_change| {
let old_id = frame_change.before.expect("Constellation: Received load msg
from pipeline, but there is no currently active page. This should
@ -416,7 +421,7 @@ impl Constellation {
let changing_frame = self.current_frame().get_ref().find_mut(old_id).expect("Constellation:
Pending change has non-active source pipeline. This should be
impossible.");
if changing_frame.contains(source_id) {
if changing_frame.contains(source_id) || source_frame.contains(old_id) {
// id that sent load msg is being changed already; abort
return true;
}
@ -424,10 +429,6 @@ impl Constellation {
// Being here means either there are no pending frames, or none of the pending
// changes would be overriden by changing the subframe associated with source_id.
let source_frame = self.current_frame().get_ref().find_mut(source_id).expect(
"Constellation: received a LoadUrlMsg from a pipeline_id associated
with a pipeline not in the active frame tree. This should be
impossible.");
let parent = source_frame.parent.clone();
let subpage_id = source_frame.pipeline.subpage_id.clone();
let next_pipeline_id = self.get_next_pipeline_id();
@ -531,7 +532,7 @@ impl Constellation {
// Create the next frame tree that will be given to the compositor
let next_frame_tree = match to_add.parent {
None => to_add, // to_add is the root
Some(_parent) => self.current_frame().get(),
Some(_parent) => self.current_frame().get_ref().clone(),
};
// If there are frames to revoke permission from, do so now.