Auto merge of #8621 - jgraham:webdriver_css, r=jdm

Add support for getting an element's computed style through WebDriver.

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2 files changed, 19 insertions, 0 deletions

diff --git a/components/script/script_task.rs b/components/script/script_task.rs
index 043c0574be1..86e1493409c 100644
--- a/components/script/script_task.rs
+++ b/components/script/script_task.rs
@@ -1108,6 +1108,8 @@ impl ScriptTask {
                 webdriver_handlers::handle_get_name(&page, pipeline_id, node_id, reply),
             WebDriverScriptCommand::GetElementAttribute(node_id, name, reply) =>
                 webdriver_handlers::handle_get_attribute(&page, pipeline_id, node_id, name, reply),
+            WebDriverScriptCommand::GetElementCSS(node_id, name, reply) =>
+                webdriver_handlers::handle_get_css(&page, pipeline_id, node_id, name, reply),
             WebDriverScriptCommand::GetElementText(node_id, reply) =>
                 webdriver_handlers::handle_get_text(&page, pipeline_id, node_id, reply),
             WebDriverScriptCommand::GetFrameId(frame_id, reply) =>
diff --git a/components/script/webdriver_handlers.rs b/components/script/webdriver_handlers.rs
index 0bf2ede1aeb..818ad20abf9 100644
--- a/components/script/webdriver_handlers.rs
+++ b/components/script/webdriver_handlers.rs
@@ -2,12 +2,14 @@
  * License, v. 2.0. If a copy of the MPL was not distributed with this
  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
 
+use dom::bindings::codegen::Bindings::CSSStyleDeclarationBinding::CSSStyleDeclarationMethods;
 use dom::bindings::codegen::Bindings::DocumentBinding::DocumentMethods;
 use dom::bindings::codegen::Bindings::ElementBinding::ElementMethods;
 use dom::bindings::codegen::Bindings::HTMLElementBinding::HTMLElementMethods;
 use dom::bindings::codegen::Bindings::HTMLIFrameElementBinding::HTMLIFrameElementMethods;
 use dom::bindings::codegen::Bindings::NodeBinding::NodeMethods;
 use dom::bindings::codegen::Bindings::NodeListBinding::NodeListMethods;
+use dom::bindings::codegen::Bindings::WindowBinding::WindowMethods;
 use dom::bindings::conversions::{FromJSValConvertible, StringificationBehavior};
 use dom::bindings::inheritance::Castable;
 use dom::bindings::js::Root;
@@ -217,6 +219,21 @@ pub fn handle_get_attribute(page: &Rc<Page>,
     }).unwrap();
 }
 
+pub fn handle_get_css(page: &Rc<Page>,
+                      pipeline: PipelineId,
+                      node_id: String,
+                      name: String,
+                      reply: IpcSender<Result<String, ()>>) {
+    reply.send(match find_node_by_unique_id(&*page, pipeline, node_id) {
+        Some(node) => {
+            let window = page.window();
+            let elem = node.downcast::<Element>().unwrap();
+            Ok(String::from(
+                window.GetComputedStyle(&elem, None).GetPropertyValue(DOMString::from(name))))
+        },
+        None => Err(())
+    }).unwrap();
+}
 
 pub fn handle_get_url(page: &Rc<Page>,
                       _pipeline: PipelineId,