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Retrieve some basic layout properties for nodes to make the box model somewhat useful.

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This commit is contained in:
Josh Matthews 2014-09-04 16:21:50 -04:00
parent fa57fe890b
commit fae7ce3c1d
7 changed files with 101 additions and 31 deletions
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31
components/script/script_task.rs
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@ -6,7 +6,9 @@
//! and layout tasks.
use dom::bindings::codegen::Bindings::DocumentBinding::DocumentMethods;
use dom::bindings::codegen::InheritTypes::{EventTargetCast, NodeCast, EventCast};
use dom::bindings::codegen::Bindings::DOMRectBinding::DOMRectMethods;
use dom::bindings::codegen::Bindings::ElementBinding::ElementMethods;
use dom::bindings::codegen::InheritTypes::{EventTargetCast, NodeCast, EventCast, ElementCast};
use dom::bindings::conversions;
use dom::bindings::conversions::{FromJSValConvertible, Empty};
use dom::bindings::global::Window;
@ -36,7 +38,7 @@ use page::{Page, IterablePage, Frame};
use devtools_traits;
use devtools_traits::{DevtoolsControlChan, DevtoolsControlPort, NewGlobal, NodeInfo, GetRootNode};
use devtools_traits::{DevtoolScriptControlMsg, EvaluateJS, EvaluateJSReply, GetDocumentElement};
use devtools_traits::{GetChildren};
use devtools_traits::{GetChildren, GetLayout};
use script_traits::{CompositorEvent, ResizeEvent, ReflowEvent, ClickEvent, MouseDownEvent};
use script_traits::{MouseMoveEvent, MouseUpEvent, ConstellationControlMsg, ScriptTaskFactory};
use script_traits::{ResizeMsg, AttachLayoutMsg, LoadMsg, SendEventMsg, ResizeInactiveMsg};
@ -506,6 +508,7 @@ impl ScriptTask {
FromDevtools(GetRootNode(id, reply)) => self.handle_get_root_node(id, reply),
FromDevtools(GetDocumentElement(id, reply)) => self.handle_get_document_element(id, reply),
FromDevtools(GetChildren(id, node_id, reply)) => self.handle_get_children(id, node_id, reply),
FromDevtools(GetLayout(id, node_id, reply)) => self.handle_get_layout(id, node_id, reply),
}
}
@ -554,28 +557,34 @@ impl ScriptTask {
reply.send(node.summarize());
}
fn handle_get_children(&self, pipeline: PipelineId, node_id: String, reply: Sender<Vec<NodeInfo>>) {
fn find_node_by_unique_id(&self, pipeline: PipelineId, node_id: String) -> Temporary<Node> {
let page = get_page(&*self.page.borrow(), pipeline);
let frame = page.frame();
let document = frame.get_ref().document.root();
let node: &JSRef<Node> = NodeCast::from_ref(&*document);
let mut children = vec!();
let mut found_parent = false;
for candidate in node.traverse_preorder() {
if candidate.get_unique_id().as_slice() == node_id.as_slice() {
found_parent = true;
for kid in candidate.children() {
children.push(kid.summarize());
}
break;
return Temporary::from_rooted(&candidate);
}
}
assert!(found_parent);
fail!("couldn't find node with unique id {:s}", node_id)
}
fn handle_get_children(&self, pipeline: PipelineId, node_id: String, reply: Sender<Vec<NodeInfo>>) {
let parent = self.find_node_by_unique_id(pipeline, node_id).root();
let children = parent.children().map(|child| child.summarize()).collect();
reply.send(children);
}
fn handle_get_layout(&self, pipeline: PipelineId, node_id: String, reply: Sender<(f32, f32)>) {
let node = self.find_node_by_unique_id(pipeline, node_id).root();
let elem: &JSRef<Element> = ElementCast::to_ref(&*node).expect("should be getting layout of element");
let rect = elem.GetBoundingClientRect().root();
reply.send((rect.Width(), rect.Height()));
}
fn handle_new_layout(&self, new_layout_info: NewLayoutInfo) {
debug!("Script: new layout: {:?}", new_layout_info);
let NewLayoutInfo {