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cleaned up code in constellation to make it more maintainable

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This commit is contained in:
Tim Kuehn 2013-09-20 02:16:54 -04:00
parent 9df66ff021
commit 84d731712f
1 changed files with 42 additions and 35 deletions
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77
src/components/main/constellation.rs
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@ -428,45 +428,52 @@ impl Constellation {
debug!("Received frame rect %? from %?, %?", rect, pipeline_id, subpage_id);
let mut already_sent = HashSet::new();
// Returns true if a child frame tree's subpage id matches the given subpage id
let subpage_eq = |child_frame_tree: & &mut ChildFrameTree| {
child_frame_tree.frame_tree.pipeline.subpage_id.expect("Constellation:
child frame does not have a subpage id. This should not be possible.")
== subpage_id
};
// Update a child's frame rect and inform its script task of the change,
// if it hasn't been already. Optionally inform the compositor if
// resize happens immediately.
let update_child_rect = |child_frame_tree: &mut ChildFrameTree, is_active: bool| {
child_frame_tree.rect = Some(rect.clone());
let pipeline = &child_frame_tree.frame_tree.pipeline;
if !already_sent.contains(&pipeline.id) {
let Size2D { width, height } = rect.size;
if is_active {
pipeline.script_chan.send(ResizeMsg(pipeline.id, Size2D {
width: width as uint,
height: height as uint
}));
self.compositor_chan.send(SetLayerClipRect(pipeline.id, rect));
} else {
pipeline.script_chan.send(ResizeInactiveMsg(pipeline.id,
Size2D(width as uint, height as uint)));
}
already_sent.insert(pipeline.id);
}
};
// If the subframe is in the current frame tree, the compositor needs the new size
for current_frame in self.current_frame().iter() {
debug!("Constellation: Sending size for frame in current frame tree.");
let source_frame = current_frame.find_mut(pipeline_id);
for source_frame in source_frame.iter() {
for child_frame_tree in source_frame.children.mut_iter() {
let pipeline = &child_frame_tree.frame_tree.pipeline;
if pipeline.subpage_id.expect("Constellation: child frame does not have a
subpage id. This should not be possible.") == subpage_id {
child_frame_tree.rect = Some(rect.clone());
let Size2D { width, height } = rect.size;
pipeline.script_chan.send(ResizeMsg(pipeline.id.clone(), Size2D {
width: width as uint,
height: height as uint
}));
self.compositor_chan.send(SetLayerClipRect(pipeline.id, rect));
already_sent.insert(pipeline.id.clone());
break;
}
}
let found_child = source_frame.children.mut_iter()
.find(|child| subpage_eq(child));
found_child.map_move(|child| update_child_rect(child, true));
}
}
// Traverse the navigation context and pending frames and tell each associated pipeline to resize.
// Update all frames with matching pipeline- and subpage-ids
let frames = self.find_all(pipeline_id);
for frame_tree in frames.iter() {
for child_frame_tree in frame_tree.children.mut_iter() {
let pipeline = &child_frame_tree.frame_tree.pipeline;
if pipeline.subpage_id.expect("Constellation: child frame does not have a
subpage id. This should not be possible.") == subpage_id {
child_frame_tree.rect = Some(rect.clone());
if !already_sent.contains(&pipeline.id) {
let Size2D { width, height } = rect.size;
pipeline.script_chan.send(ResizeInactiveMsg(pipeline.id.clone(),
Size2D(width as uint, height as uint)));
already_sent.insert(pipeline.id.clone());
}
break;
}
}
let found_child = frame_tree.children.mut_iter()
.find(|child| subpage_eq(child));
found_child.map_move(|child| update_child_rect(child, false));
}
// At this point, if no pipelines were sent a resize msg, then this subpage id
@ -588,7 +595,7 @@ impl Constellation {
// changes would be overriden by changing the subframe associated with source_id.
let parent = source_frame.parent.clone();
let subpage_id = source_frame.pipeline.subpage_id.clone();
let subpage_id = source_frame.pipeline.subpage_id;
let next_pipeline_id = self.get_next_pipeline_id();
let pipeline = @mut Pipeline::create(next_pipeline_id,
@ -743,15 +750,15 @@ impl Constellation {
fn handle_resized_window_msg(&mut self, new_size: Size2D<uint>) {
let mut already_seen = HashSet::new();
for &@FrameTree { pipeline: pipeline, _ } in self.current_frame().iter() {
pipeline.script_chan.send(ResizeMsg(pipeline.id.clone(), new_size));
already_seen.insert(pipeline.id.clone());
pipeline.script_chan.send(ResizeMsg(pipeline.id, new_size));
already_seen.insert(pipeline.id);
}
for frame_tree in self.navigation_context.previous.iter()
.chain(self.navigation_context.next.iter()) {
let pipeline = &frame_tree.pipeline;
if !already_seen.contains(&pipeline.id) {
pipeline.script_chan.send(ResizeInactiveMsg(pipeline.id.clone(), new_size));
already_seen.insert(pipeline.id.clone());
pipeline.script_chan.send(ResizeInactiveMsg(pipeline.id, new_size));
already_seen.insert(pipeline.id);
}
}
}