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Unify DocumentOrShadowRoot implementation

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This commit is contained in:
Fernando Jiménez Moreno 2019-01-24 18:16:20 +01:00
parent f3e707306f
commit 48975840dd
4 changed files with 238 additions and 161 deletions
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129
components/script/dom/macros.rs
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@ -632,132 +632,3 @@ macro_rules! handle_potential_webgl_error {
handle_potential_webgl_error!($context, $call, ());
};
}
macro_rules! impl_document_or_shadow_root_helpers(
() => (
/// <https://html.spec.whatwg.org/multipage/#concept-document-bc>
#[inline]
pub fn browsing_context(&self) -> Option<DomRoot<WindowProxy>> {
if self.has_browsing_context {
self.window.undiscarded_window_proxy()
} else {
None
}
}
pub fn nodes_from_point(
&self,
client_point: &Point2D<f32>,
reflow_goal: NodesFromPointQueryType,
) -> Vec<UntrustedNodeAddress> {
if !self
.window
.layout_reflow(QueryMsg::NodesFromPointQuery(*client_point, reflow_goal))
{
return vec![];
};
self.window.layout().nodes_from_point_response()
}
);
);
macro_rules! impl_document_or_shadow_root_methods(
($struct:ident) => (
#[allow(unsafe_code)]
// https://drafts.csswg.org/cssom-view/#dom-document-elementfrompoint
fn ElementFromPoint(&self, x: Finite<f64>, y: Finite<f64>) -> Option<DomRoot<Element>> {
let x = *x as f32;
let y = *y as f32;
let point = &Point2D::new(x, y);
let viewport = self.window.window_size().initial_viewport;
if self.browsing_context().is_none() {
return None;
}
if x < 0.0 || y < 0.0 || x > viewport.width || y > viewport.height {
return None;
}
match self
.nodes_from_point(point, NodesFromPointQueryType::Topmost)
.first()
{
Some(address) => {
let js_runtime = unsafe { JS_GetRuntime(self.window.get_cx()) };
let node = unsafe { node::from_untrusted_node_address(js_runtime, *address) };
let parent_node = node.GetParentNode().unwrap();
let element_ref = node
.downcast::<Element>()
.unwrap_or_else(|| parent_node.downcast::<Element>().unwrap());
Some(DomRoot::from_ref(element_ref))
},
None => self.GetDocumentElement(),
}
}
#[allow(unsafe_code)]
// https://drafts.csswg.org/cssom-view/#dom-document-elementsfrompoint
fn ElementsFromPoint(&self, x: Finite<f64>, y: Finite<f64>) -> Vec<DomRoot<Element>> {
let x = *x as f32;
let y = *y as f32;
let point = &Point2D::new(x, y);
let viewport = self.window.window_size().initial_viewport;
if self.browsing_context().is_none() {
return vec![];
}
// Step 2
if x < 0.0 || y < 0.0 || x > viewport.width || y > viewport.height {
return vec![];
}
let js_runtime = unsafe { JS_GetRuntime(self.window.get_cx()) };
// Step 1 and Step 3
let nodes = self.nodes_from_point(point, NodesFromPointQueryType::All);
let mut elements: Vec<DomRoot<Element>> = nodes
.iter()
.flat_map(|&untrusted_node_address| {
let node = unsafe {
node::from_untrusted_node_address(js_runtime, untrusted_node_address)
};
DomRoot::downcast::<Element>(node)
})
.collect();
// Step 4
if let Some(root_element) = self.GetDocumentElement() {
if elements.last() != Some(&root_element) {
elements.push(root_element);
}
}
// Step 5
elements
}
// https://html.spec.whatwg.org/multipage/#dom-document-activeelement
fn GetActiveElement(&self) -> Option<DomRoot<Element>> {
// TODO: Step 2.
match self.get_focused_element() {
Some(element) => Some(element), // Step 3. and 4.
None => match self.GetBody() {
// Step 5.
Some(body) => Some(DomRoot::upcast(body)),
None => self.GetDocumentElement(),
},
}
}
// https://drafts.csswg.org/cssom/#dom-document-stylesheets
fn StyleSheets(&self) -> DomRoot<StyleSheetList> {
self.stylesheet_list
.or_init(|| StyleSheetList::new(&self.window, DocumentOrShadowRoot::$struct(Dom::from_ref(self))))
}
);
);