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Implement getComputedStyle

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This commit is contained in:
David Zbarsky 2015-07-27 23:05:18 -04:00
parent 416931f4be
commit e484d6b5e3
24 changed files with 886 additions and 152 deletions
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38
components/script/dom/window.rs
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@ -20,9 +20,11 @@ use dom::bindings::utils::{GlobalStaticData, Reflectable, WindowProxyHandler};
use dom::browsercontext::BrowsingContext;
use dom::console::Console;
use dom::crypto::Crypto;
use dom::cssstyledeclaration::{CSSModificationAccess, CSSStyleDeclaration};
use dom::document::{Document, DocumentHelpers};
use dom::element::Element;
use dom::eventtarget::{EventTarget, EventTargetHelpers, EventTargetTypeId};
use dom::htmlelement::HTMLElement;
use dom::location::Location;
use dom::navigator::Navigator;
use dom::node::{window_from_node, TrustedNodeAddress, NodeHelpers};
@ -30,7 +32,7 @@ use dom::performance::Performance;
use dom::screen::Screen;
use dom::storage::Storage;
use layout_interface::{ReflowGoal, ReflowQueryType, LayoutRPC, LayoutChan, Reflow, Msg};
use layout_interface::{ContentBoxResponse, ContentBoxesResponse, ScriptReflow};
use layout_interface::{ContentBoxResponse, ContentBoxesResponse, ResolvedStyleResponse, ScriptReflow};
use page::Page;
use script_task::{TimerSource, ScriptChan, ScriptPort, NonWorkerScriptChan};
use script_task::ScriptMsg;
@ -47,6 +49,7 @@ use net_traits::ResourceTask;
use net_traits::image_cache_task::{ImageCacheChan, ImageCacheTask};
use net_traits::storage_task::{StorageTask, StorageType};
use profile_traits::mem;
use string_cache::Atom;
use util::geometry::{self, Au, MAX_RECT};
use util::{breakpoint, opts};
use util::str::{DOMString,HTML_SPACE_CHARACTERS};
@ -58,10 +61,12 @@ use js::jsapi::{JSContext, HandleValue};
use js::jsapi::{JS_GC, JS_GetRuntime, JSAutoCompartment, JSAutoRequest};
use js::rust::Runtime;
use js::rust::CompileOptionsWrapper;
use selectors::parser::PseudoElement;
use url::{Url, UrlParser};
use libc;
use rustc_serialize::base64::{FromBase64, ToBase64, STANDARD};
use std::ascii::AsciiExt;
use std::borrow::ToOwned;
use std::cell::{Cell, Ref, RefMut, RefCell};
use std::collections::HashSet;
@ -539,6 +544,23 @@ impl<'a> WindowMethods for &'a Window {
chan.send(Err(WebDriverJSError::Timeout)).unwrap();
}
}
// https://drafts.csswg.org/cssom/#dom-window-getcomputedstyle
fn GetComputedStyle(self,
element: &HTMLElement,
pseudo: Option<DOMString>) -> Root<CSSStyleDeclaration> {
// Steps 1-4.
let pseudo = match pseudo.map(|s| s.to_ascii_lowercase()) {
Some(ref pseudo) if pseudo == ":before" || pseudo == "::before" =>
Some(PseudoElement::Before),
Some(ref pseudo) if pseudo == ":after" || pseudo == "::after" =>
Some(PseudoElement::After),
_ => None
};
// Step 5.
CSSStyleDeclaration::new(self, element, pseudo, CSSModificationAccess::Readonly)
}
}
pub trait WindowHelpers {
@ -553,6 +575,8 @@ pub trait WindowHelpers {
fn content_box_query(self, content_box_request: TrustedNodeAddress) -> Rect<Au>;
fn content_boxes_query(self, content_boxes_request: TrustedNodeAddress) -> Vec<Rect<Au>>;
fn client_rect_query(self, node_geometry_request: TrustedNodeAddress) -> Rect<i32>;
fn resolved_style_query(self, element: TrustedNodeAddress,
pseudo: Option<PseudoElement>, property: &Atom) -> Option<String>;
fn handle_reflow_complete_msg(self, reflow_id: u32);
fn set_fragment_name(self, fragment: Option<String>);
fn steal_fragment_name(self) -> Option<String>;
@ -791,6 +815,17 @@ impl<'a> WindowHelpers for &'a Window {
self.layout_rpc.node_geometry().client_rect
}
fn resolved_style_query(self,
element: TrustedNodeAddress,
pseudo: Option<PseudoElement>,
property: &Atom) -> Option<String> {
self.reflow(ReflowGoal::ForScriptQuery,
ReflowQueryType::ResolvedStyleQuery(element, pseudo, property.clone()),
ReflowReason::Query);
let ResolvedStyleResponse(resolved) = self.layout_rpc.resolved_style();
resolved
}
fn handle_reflow_complete_msg(self, reflow_id: u32) {
let last_reflow_id = self.last_reflow_id.get();
if last_reflow_id == reflow_id {
@ -1098,6 +1133,7 @@ fn debug_reflow_events(goal: &ReflowGoal, query_type: &ReflowQueryType, reason:
ReflowQueryType::ContentBoxQuery(_n) => "\tContentBoxQuery",
ReflowQueryType::ContentBoxesQuery(_n) => "\tContentBoxesQuery",
ReflowQueryType::NodeGeometryQuery(_n) => "\tNodeGeometryQuery",
ReflowQueryType::ResolvedStyleQuery(_, _, _) => "\tResolvedStyleQuery",
});
debug_msg.push_str(match *reason {