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Trigger mozbrowsererror event when a pipeline fails.

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This commit is contained in:
Alan Jeffrey 2016-04-12 15:05:50 -05:00
parent 6edcad206d
commit 59824ccb92
1 changed files with 44 additions and 16 deletions
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30
components/compositing/constellation.rs
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@ -873,6 +873,9 @@ impl<LTF: LayoutThreadFactory, STF: ScriptThreadFactory> Constellation<LTF, STF>
let window_size = self.pipelines.get(&failure.pipeline_id).and_then(|pipeline| pipeline.size);
// Notify the browser chrome that the pipeline has failed
self.trigger_mozbrowsererror(failure.pipeline_id);
self.close_pipeline(failure.pipeline_id, ExitPipelineMode::Force);
while let Some(pending_pipeline_id) = self.pending_frames.iter().find(|pending| {
@ -1916,8 +1919,10 @@ impl<LTF: LayoutThreadFactory, STF: ScriptThreadFactory> Constellation<LTF, STF>
}
// https://developer.mozilla.org/en-US/docs/Web/Events/mozbrowserlocationchange
// Note that this is a no-op if the pipeline is not an immediate child iframe of the root
fn trigger_mozbrowserlocationchange(&self, pipeline_id: PipelineId) {
if prefs::get_pref("dom.mozbrowser.enabled").as_boolean().unwrap_or(false) {
if !prefs::get_pref("dom.mozbrowser.enabled").as_boolean().unwrap_or(false) { return; }
let event_info = self.pipelines.get(&pipeline_id).and_then(|pipeline| {
pipeline.parent_info.map(|(containing_pipeline_id, subpage_id)| {
(containing_pipeline_id, subpage_id, pipeline.url.serialize())
@ -1938,6 +1943,28 @@ impl<LTF: LayoutThreadFactory, STF: ScriptThreadFactory> Constellation<LTF, STF>
}
}
}
// https://developer.mozilla.org/en-US/docs/Web/Events/mozbrowsererror
// Note that this does not require the pipeline to be an immediate child of the root
// TODO: propagate more error information, e.g. a backtrace
fn trigger_mozbrowsererror(&self, pipeline_id: PipelineId) {
if !prefs::get_pref("dom.mozbrowser.enabled").as_boolean().unwrap_or(false) { return; }
if let Some(pipeline) = self.pipelines.get(&pipeline_id) {
if let Some(mut ancestor_info) = pipeline.parent_info {
if let Some(mut ancestor) = self.pipelines.get(&ancestor_info.0) {
while let Some(next_info) = ancestor.parent_info {
ancestor_info = next_info;
ancestor = match self.pipelines.get(&ancestor_info.0) {
Some(ancestor) => ancestor,
None => return warn!("Mozbrowsererror via closed pipeline {:?}.", ancestor_info.0),
};
}
let event = MozBrowserEvent::Error;
ancestor.trigger_mozbrowser_event(ancestor_info.1, event);
}
}
}
}
fn focused_pipeline_in_tree(&self, frame_id: FrameId) -> bool {
@ -1956,4 +1983,5 @@ impl<LTF: LayoutThreadFactory, STF: ScriptThreadFactory> Constellation<LTF, STF>
self.current_frame_tree_iter(root_frame_id)
.any(|current_frame| current_frame.current == pipeline_id)
}
}