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auto merge of #2420 : Ms2ger/servo/merge-Page-PageTree, r=pcwalton

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bors-servo 2014-05-13 23:52:21 -04:00
commit 6871e4ccb6
1 changed files with 107 additions and 112 deletions
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219
src/components/script/script_task.rs
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@ -159,74 +159,75 @@ pub struct Page {
/// A handle for communicating messages to the constellation task.
pub constellation_chan: Untraceable<ConstellationChan>,
// Child Pages.
pub children: Traceable<RefCell<Vec<Rc<Page>>>>,
}
pub struct PageTree {
pub page: Rc<Page>,
pub inner: Vec<PageTree>,
pub struct PageIterator {
stack: Vec<Rc<Page>>,
}
pub struct PageTreeIterator<'a> {
stack: Vec<&'a mut PageTree>,
trait IterablePage {
fn iter(&self) -> PageIterator;
fn find(&self, id: PipelineId) -> Option<Rc<Page>>;
}
impl PageTree {
fn new(id: PipelineId, layout_chan: LayoutChan,
window_size: Size2D<uint>, resource_task: ResourceTask,
constellation_chan: ConstellationChan,
js_context: Rc<Cx>) -> PageTree {
let js_info = JSPageInfo {
dom_static: GlobalStaticData(),
js_context: Untraceable::new(js_context),
};
PageTree {
page: Rc::new(Page {
id: id,
frame: Traceable::new(RefCell::new(None)),
layout_chan: Untraceable::new(layout_chan),
layout_join_port: Untraceable::new(RefCell::new(None)),
damage: Traceable::new(RefCell::new(None)),
window_size: Untraceable::new(Cell::new(window_size)),
js_info: Traceable::new(RefCell::new(Some(js_info))),
url: Untraceable::new(RefCell::new(None)),
next_subpage_id: Untraceable::new(Cell::new(SubpageId(0))),
resize_event: Untraceable::new(Cell::new(None)),
fragment_node: Traceable::new(RefCell::new(None)),
last_reflow_id: Traceable::new(Cell::new(0)),
resource_task: Untraceable::new(resource_task),
constellation_chan: Untraceable::new(constellation_chan),
}),
inner: vec!(),
impl IterablePage for Rc<Page> {
fn iter(&self) -> PageIterator {
PageIterator {
stack: vec!(self.clone()),
}
}
fn id(&self) -> PipelineId {
self.page().id
}
fn page<'a>(&'a self) -> &'a Page {
&*self.page
}
pub fn find<'a> (&'a mut self, id: PipelineId) -> Option<&'a mut PageTree> {
if self.page().id == id { return Some(self); }
for page_tree in self.inner.mut_iter() {
let found = page_tree.find(id);
fn find(&self, id: PipelineId) -> Option<Rc<Page>> {
if self.id == id { return Some(self.clone()); }
for page in self.children.deref().borrow().iter() {
let found = page.find(id);
if found.is_some() { return found; }
}
None
}
pub fn iter<'a>(&'a mut self) -> PageTreeIterator<'a> {
PageTreeIterator {
stack: vec!(self),
}
impl Page {
fn new(id: PipelineId, layout_chan: LayoutChan,
window_size: Size2D<uint>, resource_task: ResourceTask,
constellation_chan: ConstellationChan,
js_context: Rc<Cx>) -> Page {
let js_info = JSPageInfo {
dom_static: GlobalStaticData(),
js_context: Untraceable::new(js_context),
};
Page {
id: id,
frame: Traceable::new(RefCell::new(None)),
layout_chan: Untraceable::new(layout_chan),
layout_join_port: Untraceable::new(RefCell::new(None)),
damage: Traceable::new(RefCell::new(None)),
window_size: Untraceable::new(Cell::new(window_size)),
js_info: Traceable::new(RefCell::new(Some(js_info))),
url: Untraceable::new(RefCell::new(None)),
next_subpage_id: Untraceable::new(Cell::new(SubpageId(0))),
resize_event: Untraceable::new(Cell::new(None)),
fragment_node: Traceable::new(RefCell::new(None)),
last_reflow_id: Traceable::new(Cell::new(0)),
resource_task: Untraceable::new(resource_task),
constellation_chan: Untraceable::new(constellation_chan),
children: Traceable::new(RefCell::new(vec!())),
}
}
fn id(&self) -> PipelineId {
self.id
}
// must handle root case separately
pub fn remove(&mut self, id: PipelineId) -> Option<PageTree> {
pub fn remove(&self, id: PipelineId) -> Option<Rc<Page>> {
let remove_idx = {
self.inner.mut_iter()
self.children
.deref()
.borrow_mut()
.mut_iter()
.enumerate()
.find(|&(_idx, ref page_tree)| {
// FIXME: page_tree has a lifetime such that it's unusable for anything.
@ -238,9 +239,9 @@ impl PageTree {
.map(|(idx, _)| idx)
};
match remove_idx {
Some(idx) => return Some(self.inner.remove(idx).unwrap()),
Some(idx) => return Some(self.children.deref().borrow_mut().remove(idx).unwrap()),
None => {
for page_tree in self.inner.mut_iter() {
for page_tree in self.children.deref().borrow_mut().mut_iter() {
match page_tree.remove(id) {
found @ Some(_) => return found,
None => (), // keep going...
@ -252,14 +253,14 @@ impl PageTree {
}
}
impl<'a> Iterator<Rc<Page>> for PageTreeIterator<'a> {
impl Iterator<Rc<Page>> for PageIterator {
fn next(&mut self) -> Option<Rc<Page>> {
if !self.stack.is_empty() {
let next = self.stack.pop().unwrap();
for child in next.inner.mut_iter() {
self.stack.push(child);
for child in next.children.deref().borrow().iter() {
self.stack.push(child.clone());
}
Some(next.page.clone())
Some(next.clone())
} else {
None
}
@ -531,7 +532,7 @@ impl Drop for StackRootTLS {
/// FIXME: Rename to `Page`, following WebKit?
pub struct ScriptTask {
/// A handle to the information pertaining to page layout
pub page_tree: RefCell<PageTree>,
pub page: RefCell<Rc<Page>>,
/// A handle to the image cache task.
pub image_cache_task: ImageCacheTask,
/// A handle to the resource task.
@ -581,8 +582,8 @@ impl<'a> Drop for ScriptMemoryFailsafe<'a> {
fn drop(&mut self) {
match self.owner {
Some(owner) => {
let mut page_tree = owner.page_tree.borrow_mut();
for page in page_tree.iter() {
let mut page = owner.page.borrow_mut();
for page in page.iter() {
*page.mut_js_info() = None;
}
*owner.js_context.borrow_mut() = None;
@ -605,12 +606,12 @@ impl ScriptTask {
window_size: Size2D<uint>)
-> Rc<ScriptTask> {
let (js_runtime, js_context) = ScriptTask::new_rt_and_cx();
let page_tree = PageTree::new(id, layout_chan, window_size,
resource_task.clone(),
constellation_chan.clone(),
js_context.clone());
let page = Page::new(id, layout_chan, window_size,
resource_task.clone(),
constellation_chan.clone(),
js_context.clone());
Rc::new(ScriptTask {
page_tree: RefCell::new(page_tree),
page: RefCell::new(Rc::new(page)),
image_cache_task: img_cache_task,
resource_task: resource_task,
@ -715,8 +716,8 @@ impl ScriptTask {
let mut resizes = vec!();
{
let mut page_tree = self.page_tree.borrow_mut();
for page in page_tree.iter() {
let mut page = self.page.borrow_mut();
for page in page.iter() {
// Only process a resize if layout is idle.
let layout_join_port = page.layout_join_port.deref().borrow();
if layout_join_port.is_none() {
@ -743,8 +744,8 @@ impl ScriptTask {
loop {
match event {
ResizeMsg(id, size) => {
let mut page_tree = self.page_tree.borrow_mut();
let page = page_tree.find(id).expect("resize sent to nonexistent pipeline").page();
let mut page = self.page.borrow_mut();
let page = page.find(id).expect("resize sent to nonexistent pipeline");
page.resize_event.deref().set(Some(size));
}
_ => {
@ -786,25 +787,25 @@ impl ScriptTask {
layout_chan
} = new_layout_info;
let mut page_tree = self.page_tree.borrow_mut();
let parent_page_tree = page_tree.find(old_id).expect("ScriptTask: received a layout
let mut page = self.page.borrow_mut();
let parent_page = page.find(old_id).expect("ScriptTask: received a layout
whose parent has a PipelineId which does not correspond to a pipeline in the script
task's page tree. This is a bug.");
let new_page_tree = {
let window_size = parent_page_tree.page().window_size.deref().get();
PageTree::new(new_id, layout_chan, window_size,
parent_page_tree.page().resource_task.deref().clone(),
self.constellation_chan.clone(),
self.js_context.borrow().get_ref().clone())
let new_page = {
let window_size = parent_page.window_size.deref().get();
Page::new(new_id, layout_chan, window_size,
parent_page.resource_task.deref().clone(),
self.constellation_chan.clone(),
self.js_context.borrow().get_ref().clone())
};
parent_page_tree.inner.push(new_page_tree);
parent_page.children.deref().borrow_mut().push(Rc::new(new_page));
}
/// Handles a timer that fired.
fn handle_fire_timer_msg(&self, id: PipelineId, timer_id: TimerId) {
let mut page_tree = self.page_tree.borrow_mut();
let page = page_tree.find(id).expect("ScriptTask: received fire timer msg for a
pipeline ID not associated with this script task. This is a bug.").page();
let mut page = self.page.borrow_mut();
let page = page.find(id).expect("ScriptTask: received fire timer msg for a
pipeline ID not associated with this script task. This is a bug.");
let frame = page.frame();
let mut window = frame.get_ref().window.root();
@ -837,10 +838,10 @@ impl ScriptTask {
/// Handles a notification that reflow completed.
fn handle_reflow_complete_msg(&self, pipeline_id: PipelineId, reflow_id: uint) {
debug!("Script: Reflow {:?} complete for {:?}", reflow_id, pipeline_id);
let mut page_tree = self.page_tree.borrow_mut();
let page = page_tree.find(pipeline_id).expect(
let mut page = self.page.borrow_mut();
let page = page.find(pipeline_id).expect(
"ScriptTask: received a load message for a layout channel that is not associated \
with this script task. This is a bug.").page();
with this script task. This is a bug.");
let last_reflow_id = page.last_reflow_id.deref().get();
if last_reflow_id == reflow_id {
let mut layout_join_port = page.layout_join_port.deref().borrow_mut();
@ -858,9 +859,9 @@ impl ScriptTask {
/// Window was resized, but this script was not active, so don't reflow yet
fn handle_resize_inactive_msg(&self, id: PipelineId, new_size: Size2D<uint>) {
let mut page_tree = self.page_tree.borrow_mut();
let page = page_tree.find(id).expect("Received resize message for PipelineId not associated
with a page in the page tree. This is a bug.").page();
let mut page = self.page.borrow_mut();
let page = page.find(id).expect("Received resize message for PipelineId not associated
with a page in the page tree. This is a bug.");
page.window_size.deref().set(new_size);
let mut page_url = page.mut_url();
let last_loaded_url = replace(&mut *page_url, None);
@ -887,18 +888,18 @@ impl ScriptTask {
/// Returns true if the script task should shut down and false otherwise.
fn handle_exit_pipeline_msg(&self, id: PipelineId) -> bool {
// If root is being exited, shut down all pages
let mut page_tree = self.page_tree.borrow_mut();
if page_tree.page().id == id {
let mut page = self.page.borrow_mut();
if page.id == id {
debug!("shutting down layout for root page {:?}", id);
*self.js_context.borrow_mut() = None;
shut_down_layout(&mut *page_tree, (*self.js_runtime).ptr);
shut_down_layout(&*page, (*self.js_runtime).ptr);
return true
}
// otherwise find just the matching page and exit all sub-pages
match page_tree.remove(id) {
Some(ref mut page_tree) => {
shut_down_layout(&mut *page_tree, (*self.js_runtime).ptr);
match page.remove(id) {
Some(ref mut page) => {
shut_down_layout(&*page, (*self.js_runtime).ptr);
false
}
// TODO(tkuehn): pipeline closing is currently duplicated across
@ -914,11 +915,10 @@ impl ScriptTask {
fn load(&self, pipeline_id: PipelineId, url: Url) {
debug!("ScriptTask: loading {:?} on page {:?}", url, pipeline_id);
let mut page_tree = self.page_tree.borrow_mut();
let page_tree = page_tree.find(pipeline_id).expect("ScriptTask: received a load
let mut page = self.page.borrow_mut();
let page = page.find(pipeline_id).expect("ScriptTask: received a load
message for a layout channel that is not associated with this script task. This
is a bug.");
let page = page_tree.page();
let last_loaded_url = replace(&mut *page.mut_url(), None);
match last_loaded_url {
@ -937,7 +937,7 @@ impl ScriptTask {
let cx = cx.get_ref();
// Create the window and document objects.
let mut window = Window::new(cx.deref().ptr,
page_tree.page.clone(),
page.clone(),
self.chan.clone(),
self.compositor.dup(),
self.image_cache_task.clone()).root();
@ -953,7 +953,7 @@ impl ScriptTask {
// Parse HTML.
//
// Note: We can parse the next document in parallel with any previous documents.
let html_parsing_result = hubbub_html_parser::parse_html(page,
let html_parsing_result = hubbub_html_parser::parse_html(&*page,
&mut *document,
url.clone(),
self.resource_task.clone());
@ -1053,10 +1053,10 @@ impl ScriptTask {
///
/// TODO: Actually perform DOM event dispatch.
fn handle_event(&self, pipeline_id: PipelineId, event: Event_) {
fn get_page<'a>(page_tree: &'a mut PageTree, pipeline_id: PipelineId) -> &'a Page {
page_tree.find(pipeline_id).expect("ScriptTask: received an event \
fn get_page(page: &Rc<Page>, pipeline_id: PipelineId) -> Rc<Page> {
page.find(pipeline_id).expect("ScriptTask: received an event \
message for a layout channel that is not associated with this script task.\
This is a bug.").page()
This is a bug.")
}
match event {
@ -1064,8 +1064,7 @@ impl ScriptTask {
debug!("script got resize event: {:u}, {:u}", new_width, new_height);
let window = {
let mut page_tree = self.page_tree.borrow_mut();
let page = get_page(&mut *page_tree, pipeline_id);
let page = get_page(&*self.page.borrow(), pipeline_id);
page.window_size.deref().set(Size2D(new_width, new_height));
let frame = page.frame();
@ -1101,9 +1100,7 @@ impl ScriptTask {
// FIXME(pcwalton): This reflows the entire document and is not incremental-y.
ReflowEvent => {
debug!("script got reflow event");
let mut page_tree = self.page_tree.borrow_mut();
let page = get_page(&mut *page_tree, pipeline_id);
let page = get_page(&*self.page.borrow(), pipeline_id);
let frame = page.frame();
if frame.is_some() {
page.damage(MatchSelectorsDocumentDamage);
@ -1113,8 +1110,7 @@ impl ScriptTask {
ClickEvent(_button, point) => {
debug!("ClickEvent: clicked at {:?}", point);
let mut page_tree = self.page_tree.borrow_mut();
let page = get_page(&mut *page_tree, pipeline_id);
let page = get_page(&*self.page.borrow(), pipeline_id);
match page.hit_test(&point) {
Some(node_address) => {
debug!("node address is {:?}", node_address);
@ -1128,7 +1124,7 @@ impl ScriptTask {
Some(node) => {
debug!("clicked on {:s}", node.debug_str());
let element: &JSRef<Element> = ElementCast::to_ref(&node).unwrap();
self.load_url_from_element(page, element);
self.load_url_from_element(&*page, element);
}
None => {}
}
@ -1140,8 +1136,7 @@ impl ScriptTask {
MouseDownEvent(..) => {}
MouseUpEvent(..) => {}
MouseMoveEvent(point) => {
let mut page_tree = self.page_tree.borrow_mut();
let page = get_page(&mut *page_tree, pipeline_id);
let page = get_page(&*self.page.borrow(), pipeline_id);
match page.get_nodes_under_mouse(&point) {
Some(node_address) => {
@ -1231,7 +1226,7 @@ impl ScriptTask {
}
/// Shuts down layout for the given page tree.
fn shut_down_layout(page_tree: &mut PageTree, rt: *JSRuntime) {
fn shut_down_layout(page_tree: &Rc<Page>, rt: *JSRuntime) {
for page in page_tree.iter() {
page.join_layout();