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Auto merge of #10551 - asajeffrey:trigger-mozbrowsererror-event, r=jdm

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Trigger mozbrowsererror event when a pipeline fails.

Addresses part of #10334 (it fires the event, but does not include a backtrace).

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This commit is contained in:
bors-servo 2016-04-19 03:03:46 +05:30
commit 4001a24c46
1 changed files with 44 additions and 16 deletions
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60
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| {
@ -1916,30 +1919,54 @@ 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) {
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())
})
});
if !prefs::get_pref("dom.mozbrowser.enabled").as_boolean().unwrap_or(false) { return; }
// If this is an iframe, then send the event with new url
if let Some((containing_pipeline_id, subpage_id, url)) = event_info {
if let Some(parent_pipeline) = self.pipelines.get(&containing_pipeline_id) {
if let Some(frame_id) = self.pipeline_to_frame_map.get(&pipeline_id) {
if let Some(frame) = self.frames.get(&frame_id) {
let can_go_backward = !frame.prev.is_empty();
let can_go_forward = !frame.next.is_empty();
let event = MozBrowserEvent::LocationChange(url, can_go_backward, can_go_forward);
parent_pipeline.trigger_mozbrowser_event(subpage_id, event);
}
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())
})
});
// If this is an iframe, then send the event with new url
if let Some((containing_pipeline_id, subpage_id, url)) = event_info {
if let Some(parent_pipeline) = self.pipelines.get(&containing_pipeline_id) {
if let Some(frame_id) = self.pipeline_to_frame_map.get(&pipeline_id) {
if let Some(frame) = self.frames.get(&frame_id) {
let can_go_backward = !frame.prev.is_empty();
let can_go_forward = !frame.next.is_empty();
let event = MozBrowserEvent::LocationChange(url, can_go_backward, can_go_forward);
parent_pipeline.trigger_mozbrowser_event(subpage_id, event);
}
}
}
}
}
// 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 {
self.focus_pipeline_id.map_or(false, |pipeline_id| {
self.pipeline_exists_in_tree(pipeline_id, Some(frame_id))
@ -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)
}
}