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Various cleanup in constellation.rs.

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This commit is contained in:
Ms2ger 2014-11-17 18:27:22 +01:00
parent 2bda68f038
commit 4d3977b8f8
1 changed files with 92 additions and 88 deletions
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180
components/compositing/constellation.rs
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@ -92,11 +92,8 @@ struct FrameTree {
impl FrameTree {
fn new(pipeline: Rc<Pipeline>, parent_pipeline: Option<Rc<Pipeline>>) -> FrameTree {
FrameTree {
pipeline: pipeline.clone(),
parent: match parent_pipeline {
Some(ref pipeline) => RefCell::new(Some(pipeline.clone())),
None => RefCell::new(None),
},
pipeline: pipeline,
parent: RefCell::new(parent_pipeline),
children: RefCell::new(vec!()),
has_compositor_layer: Cell::new(false),
}
@ -147,15 +144,14 @@ pub struct FrameTreeDiff {
impl FrameTree {
fn to_sendable(&self) -> SendableFrameTree {
let sendable_frame_tree = SendableFrameTree {
SendableFrameTree {
pipeline: self.pipeline.to_sendable(),
children: self.children
.borrow()
.iter()
.map(|frame_tree| frame_tree.to_sendable())
.collect(),
};
sendable_frame_tree
}
}
}
@ -181,11 +177,14 @@ impl FrameTreeTraversal for Rc<FrameTree> {
fn replace_child(&self, id: PipelineId, new_child: Rc<FrameTree>) -> ReplaceResult {
for frame_tree in self.iter() {
let mut children = frame_tree.children.borrow_mut();
let mut child = children.iter_mut()
let child = children.iter_mut()
.find(|child| child.frame_tree.pipeline.id == id);
for child in child.iter_mut() {
*new_child.parent.borrow_mut() = child.frame_tree.parent.borrow().clone();
return ReplacedNode(replace(&mut child.frame_tree, new_child));
match child {
Some(child) => {
*new_child.parent.borrow_mut() = child.frame_tree.parent.borrow().clone();
return ReplacedNode(replace(&mut child.frame_tree, new_child));
}
None => (),
}
}
OriginalNode(new_child)
@ -216,14 +215,14 @@ struct FrameTreeIterator {
impl Iterator<Rc<FrameTree>> for FrameTreeIterator {
fn next(&mut self) -> Option<Rc<FrameTree>> {
if !self.stack.is_empty() {
let next = self.stack.pop();
for cft in next.as_ref().unwrap().children.borrow().iter() {
self.stack.push(cft.frame_tree.clone());
match self.stack.pop() {
Some(next) => {
for cft in next.children.borrow().iter() {
self.stack.push(cft.frame_tree.clone());
}
Some(next)
}
Some(next.unwrap())
} else {
None
None => None,
}
}
}
@ -272,10 +271,11 @@ impl NavigationContext {
fn load(&mut self, frame_tree: Rc<FrameTree>) -> Vec<Rc<FrameTree>> {
debug!("navigating to {}", frame_tree.pipeline.id);
let evicted = replace(&mut self.next, vec!());
if self.current.is_some() {
self.previous.push(self.current.take().unwrap());
match self.current.take() {
Some(current) => self.previous.push(current),
None => (),
}
self.current = Some(frame_tree.clone());
self.current = Some(frame_tree);
evicted
}
@ -390,11 +390,11 @@ impl<LTF: LayoutTaskFactory, STF: ScriptTaskFactory> Constellation<LTF, STF> {
/// Returns both the navigation context and pending frame trees whose keys are pipeline_id.
fn find_all(&mut self, pipeline_id: PipelineId) -> Vec<Rc<FrameTree>> {
let matching_navi_frames = self.navigation_context.find_all(pipeline_id);
let matching_pending_frames = self.pending_frames.iter().filter_map(|frame_change| {
let mut matching_navi_frames = self.navigation_context.find_all(pipeline_id);
matching_navi_frames.extend(self.pending_frames.iter().filter_map(|frame_change| {
frame_change.after.find(pipeline_id)
});
matching_navi_frames.into_iter().chain(matching_pending_frames).collect()
}));
matching_navi_frames
}
/// Handles loading pages, navigation, and granting access to the compositor
@ -508,13 +508,13 @@ impl<LTF: LayoutTaskFactory, STF: ScriptTaskFactory> Constellation<LTF, STF> {
let idx = self.pending_frames.iter().position(|pending| {
pending.after.pipeline.id == pipeline_id
});
idx.map(|idx| {
debug!("removing pending frame change for failed pipeline");
force_pipeline_exit(&self.pending_frames[idx].after.pipeline);
self.pending_frames.remove(idx)
});
if idx.is_none() {
break;
match idx {
Some(idx) => {
debug!("removing pending frame change for failed pipeline");
force_pipeline_exit(&self.pending_frames[idx].after.pipeline);
self.pending_frames.remove(idx);
},
None => break,
}
}
debug!("creating replacement pipeline for about:failure");
@ -797,67 +797,70 @@ impl<LTF: LayoutTaskFactory, STF: ScriptTaskFactory> Constellation<LTF, STF> {
let pending_index = self.pending_frames.iter().rposition(|frame_change| {
frame_change.after.pipeline.id == pipeline_id
});
for &pending_index in pending_index.iter() {
let frame_change = self.pending_frames.swap_remove(pending_index).unwrap();
let to_add = frame_change.after.clone();
match pending_index {
Some(pending_index) => {
let frame_change = self.pending_frames.swap_remove(pending_index).unwrap();
let to_add = frame_change.after.clone();
// Create the next frame tree that will be given to the compositor
let next_frame_tree = if to_add.parent.borrow().is_some() {
// NOTE: work around borrowchk issues
self.current_frame().as_ref().unwrap().clone()
} else {
to_add.clone()
};
// Create the next frame tree that will be given to the compositor
let next_frame_tree = if to_add.parent.borrow().is_some() {
// NOTE: work around borrowchk issues
self.current_frame().as_ref().unwrap().clone()
} else {
to_add.clone()
};
// If there are frames to revoke permission from, do so now.
match frame_change.before {
Some(revoke_id) if self.current_frame().is_some() => {
debug!("Constellation: revoking permission from {}", revoke_id);
let current_frame = self.current_frame().as_ref().unwrap();
// If there are frames to revoke permission from, do so now.
match frame_change.before {
Some(revoke_id) if self.current_frame().is_some() => {
debug!("Constellation: revoking permission from {}", revoke_id);
let current_frame = self.current_frame().as_ref().unwrap();
let to_revoke = current_frame.find(revoke_id).expect(
"Constellation: pending frame change refers to an old \
frame not contained in the current frame. This is a bug");
let to_revoke = current_frame.find(revoke_id).expect(
"Constellation: pending frame change refers to an old \
frame not contained in the current frame. This is a bug");
for frame in to_revoke.iter() {
frame.pipeline.revoke_paint_permission();
}
for frame in to_revoke.iter() {
frame.pipeline.revoke_paint_permission();
}
// If to_add is not the root frame, then replace revoked_frame with it.
// This conveniently keeps scissor rect size intact.
// NOTE: work around borrowchk issue
let mut flag = false;
{
if to_add.parent.borrow().is_some() {
debug!("Constellation: replacing {} with {} in {}",
revoke_id, to_add.pipeline.id,
next_frame_tree.pipeline.id);
flag = true;
// If to_add is not the root frame, then replace revoked_frame with it.
// This conveniently keeps scissor rect size intact.
// NOTE: work around borrowchk issue
let mut flag = false;
{
if to_add.parent.borrow().is_some() {
debug!("Constellation: replacing {} with {} in {}",
revoke_id, to_add.pipeline.id,
next_frame_tree.pipeline.id);
flag = true;
}
}
if flag {
next_frame_tree.replace_child(revoke_id, to_add);
}
}
if flag {
next_frame_tree.replace_child(revoke_id, to_add);
_ => {
// Add to_add to parent's children, if it is not the root
let parent = &to_add.parent;
for parent in parent.borrow().iter() {
let subpage_id = to_add.pipeline.subpage_id
.expect("Constellation:
Child frame's subpage id is None. This should be impossible.");
let rect = self.pending_sizes.remove(&(parent.id, subpage_id));
let parent = next_frame_tree.find(parent.id).expect(
"Constellation: pending frame has a parent frame that is not
active. This is a bug.");
parent.children.borrow_mut().push(ChildFrameTree::new(to_add.clone(),
rect));
}
}
}
_ => {
// Add to_add to parent's children, if it is not the root
let parent = &to_add.parent;
for parent in parent.borrow().iter() {
let subpage_id = to_add.pipeline.subpage_id
.expect("Constellation:
Child frame's subpage id is None. This should be impossible.");
let rect = self.pending_sizes.remove(&(parent.id, subpage_id));
let parent = next_frame_tree.find(parent.id).expect(
"Constellation: pending frame has a parent frame that is not
active. This is a bug.");
parent.children.borrow_mut().push(ChildFrameTree::new(to_add.clone(),
rect));
}
}
}
self.grant_paint_permission(next_frame_tree, frame_change.navigation_type);
self.grant_paint_permission(next_frame_tree, frame_change.navigation_type);
},
None => (),
}
}
@ -908,9 +911,9 @@ impl<LTF: LayoutTaskFactory, STF: ScriptTaskFactory> Constellation<LTF, STF> {
}
fn handle_evicted_frames(&mut self, evicted: Vec<Rc<FrameTree>>) {
for frame_tree in evicted.iter() {
for frame_tree in evicted.into_iter() {
if !self.navigation_context.contains(frame_tree.pipeline.id) {
self.close_pipelines(frame_tree.clone());
self.close_pipelines(frame_tree);
} else {
let frames = frame_tree.children.borrow().iter()
.map(|child| child.frame_tree.clone()).collect();
@ -979,8 +982,9 @@ impl<LTF: LayoutTaskFactory, STF: ScriptTaskFactory> Constellation<LTF, STF> {
&None => return,
};
let (child, parent) =
match self.find_child_parent_pair_in_frame_tree(current_frame_tree, pipeline_id) {
let pair = self.find_child_parent_pair_in_frame_tree(current_frame_tree,
pipeline_id);
let (child, parent) = match pair {
Some(pair) => pair,
None => return,
};