Migrate `EventTarget` event firing functions to use `Atom`s.

This allows us to utilize more `atom` macros.

components/atoms/static_atoms.txt

@@ -70,4 +70,8 @@ keydown
 abort
 beforescriptexecute
 afterscriptexecute
+invalid
+change
+open
+toggle
 

components/script/dom/document.rs

@@ -606,7 +606,7 @@ impl Document {
 
         self.ready_state.set(state);
 
-        self.upcast::<EventTarget>().fire_event("readystatechange");
+        self.upcast::<EventTarget>().fire_event(atom!("readystatechange"));
     }
 
     /// Return whether scripting is enabled or not

components/script/dom/event.rs

@@ -330,7 +330,9 @@ impl Runnable for EventRunnable {
 
     fn handler(self: Box<EventRunnable>) {
         let target = self.target.root();
-        target.fire_event_with_params(&*self.name, self.bubbles, self.cancelable);
+        let bubbles = self.bubbles.clone();
+        let cancelable = self.cancelable.clone();
+        target.fire_event_with_params(self.name, bubbles, cancelable);
     }
 }
 
@@ -345,6 +347,6 @@ impl Runnable for SimpleEventRunnable {
 
     fn handler(self: Box<SimpleEventRunnable>) {
         let target = self.target.root();
-        target.fire_event(&*self.name);
+        target.fire_event(self.name);
     }
 }

components/script/dom/eventtarget.rs

@@ -491,40 +491,40 @@ impl EventTarget {
     }
 
     // https://dom.spec.whatwg.org/#concept-event-fire
-    pub fn fire_event(&self, name: &str) -> Root<Event> {
+    pub fn fire_event(&self, name: Atom) -> Root<Event> {
         self.fire_event_with_params(name,
                                     EventBubbles::DoesNotBubble,
                                     EventCancelable::NotCancelable)
     }
 
     // https://dom.spec.whatwg.org/#concept-event-fire
-    pub fn fire_bubbling_event(&self, name: &str) -> Root<Event> {
+    pub fn fire_bubbling_event(&self, name: Atom) -> Root<Event> {
         self.fire_event_with_params(name,
                                     EventBubbles::Bubbles,
                                     EventCancelable::NotCancelable)
     }
 
     // https://dom.spec.whatwg.org/#concept-event-fire
-    pub fn fire_cancelable_event(&self, name: &str) -> Root<Event> {
+    pub fn fire_cancelable_event(&self, name: Atom) -> Root<Event> {
         self.fire_event_with_params(name,
                                     EventBubbles::DoesNotBubble,
                                     EventCancelable::Cancelable)
     }
 
     // https://dom.spec.whatwg.org/#concept-event-fire
-    pub fn fire_bubbling_cancelable_event(&self, name: &str) -> Root<Event> {
+    pub fn fire_bubbling_cancelable_event(&self, name: Atom) -> Root<Event> {
         self.fire_event_with_params(name,
                                     EventBubbles::Bubbles,
                                     EventCancelable::Cancelable)
     }
 
     // https://dom.spec.whatwg.org/#concept-event-fire
     pub fn fire_event_with_params(&self,
-                                  name: &str,
+                                  name: Atom,
                                   bubbles: EventBubbles,
                                   cancelable: EventCancelable)
                                   -> Root<Event> {
-        let event = Event::new(&self.global(), Atom::from(name), bubbles, cancelable);
+        let event = Event::new(&self.global(), name, bubbles, cancelable);
         event.fire(self);
         event
     }

components/script/dom/htmldetailselement.rs

@@ -94,7 +94,7 @@ impl Runnable for DetailsNotificationRunnable {
     fn handler(self: Box<DetailsNotificationRunnable>) {
         let target = self.element.root();
         if target.check_toggle_count(self.toggle_number) {
-            target.upcast::<EventTarget>().fire_event("toggle");
+            target.upcast::<EventTarget>().fire_event(atom!("toggle"));
         }
     }
 }

components/script/dom/htmlformelement.rs

@@ -304,14 +304,14 @@ impl HTMLFormElement {
         {
             if self.interactive_validation().is_err() {
                 // TODO: Implement event handlers on all form control elements
-                self.upcast::<EventTarget>().fire_event("invalid");
+                self.upcast::<EventTarget>().fire_event(atom!("invalid"));
                 return;
             }
         }
         // Step 5
         if submit_method_flag == SubmittedFrom::NotFromForm {
             let event = self.upcast::<EventTarget>()
-                .fire_bubbling_cancelable_event("submit");
+                .fire_bubbling_cancelable_event(atom!("submit"));
             if event.DefaultPrevented() {
                 return;
             }
@@ -481,7 +481,7 @@ impl HTMLFormElement {
         // Step 5-6
         let unhandled_invalid_controls = invalid_controls.into_iter().filter_map(|field| {
             let event = field.as_event_target()
-                .fire_cancelable_event("invalid");
+                .fire_cancelable_event(atom!("invalid"));
             if !event.DefaultPrevented() { return Some(field); }
             None
         }).collect::<Vec<FormSubmittableElement>>();
@@ -610,7 +610,7 @@ impl HTMLFormElement {
         }
 
         let event = self.upcast::<EventTarget>()
-            .fire_bubbling_cancelable_event("reset");
+            .fire_bubbling_cancelable_event(atom!("reset"));
         if event.DefaultPrevented() {
             return;
         }

components/script/dom/htmliframeelement.rs

@@ -239,7 +239,7 @@ impl HTMLIFrameElement {
         // TODO Step 3 - set child document  `mut iframe load` flag
 
         // Step 4
-        self.upcast::<EventTarget>().fire_event("load");
+        self.upcast::<EventTarget>().fire_event(atom!("load"));
 
         let mut blocker = self.load_blocker.borrow_mut();
         LoadBlocker::terminate(&mut blocker);

components/script/dom/htmlimageelement.rs

@@ -105,12 +105,12 @@ impl Runnable for ImageResponseHandlerRunnable {
 
         // Fire image.onload
         if trigger_image_load {
-            element.upcast::<EventTarget>().fire_event("load");
+            element.upcast::<EventTarget>().fire_event(atom!("load"));
         }
 
         // Fire image.onerror
         if trigger_image_error {
-            element.upcast::<EventTarget>().fire_event("error");
+            element.upcast::<EventTarget>().fire_event(atom!("error"));
         }
 
         // Trigger reflow
@@ -180,8 +180,8 @@ impl HTMLImageElement {
                             // Step 11, substep 5
                             let img = self.img.root();
                             img.current_request.borrow_mut().source_url = Some(self.src.into());
-                            img.upcast::<EventTarget>().fire_event("error");
-                            img.upcast::<EventTarget>().fire_event("loadend");
+                            img.upcast::<EventTarget>().fire_event(atom!("error"));
+                            img.upcast::<EventTarget>().fire_event(atom!("loadend"));
                         }
                     }
 

components/script/dom/htmlinputelement.rs

@@ -849,8 +849,8 @@ impl HTMLInputElement {
             let filelist = FileList::new(&window, files);
             self.filelist.set(Some(&filelist));
 
-            target.fire_bubbling_event("input");
-            target.fire_bubbling_event("change");
+            target.fire_bubbling_event(atom!("input"));
+            target.fire_bubbling_event(atom!("change"));
         }
     }
 }
@@ -1286,8 +1286,8 @@ impl Activatable for HTMLInputElement {
                 // https://html.spec.whatwg.org/multipage/#radio-button-state-(type=radio):activation-behavior
                 // Check if document owner is fully active
                 let target = self.upcast::<EventTarget>();
-                target.fire_bubbling_event("input");
-                target.fire_bubbling_event("change");
+                target.fire_bubbling_event(atom!("input"));
+                target.fire_bubbling_event(atom!("change"));
             },
             InputType::InputFile => self.select_files(None),
             _ => ()

components/script/dom/htmllinkelement.rs

@@ -325,7 +325,7 @@ impl FetchResponseListener for StylesheetContext {
         if let Some(ref meta) = self.metadata {
             if let Some(Serde(ContentType(Mime(TopLevel::Text, SubLevel::Css, _)))) = meta.content_type {
             } else {
-                self.elem.root().upcast::<EventTarget>().fire_event("error");
+                self.elem.root().upcast::<EventTarget>().fire_event(atom!("error"));
             }
         }
     }
@@ -380,7 +380,7 @@ impl FetchResponseListener for StylesheetContext {
 
         document.finish_load(LoadType::Stylesheet(self.url.clone()));
 
-        let event = if successful { "load" } else { "error" };
+        let event = if successful { atom!("load") } else { atom!("error") };
 
         elem.upcast::<EventTarget>().fire_event(event);
     }

components/script/dom/mediaquerylist.rs

@@ -142,7 +142,7 @@ impl WeakMediaQueryListVec {
     pub fn evaluate_and_report_changes(&self) {
         for mql in self.cell.borrow().iter() {
             if let MediaQueryListMatchState::Changed(_) = mql.root().unwrap().evaluate_changes() {
-                mql.root().unwrap().upcast::<EventTarget>().fire_event("change");
+                mql.root().unwrap().upcast::<EventTarget>().fire_event(atom!("change"));
             }
         }
     }

components/script/dom/serviceworker.rs

@@ -18,6 +18,7 @@ use dom::globalscope::GlobalScope;
 use js::jsapi::{HandleValue, JSContext};
 use script_thread::Runnable;
 use script_traits::{ScriptMsg, DOMMessage};
+use servo_atoms::Atom;
 use std::cell::Cell;
 use url::Url;
 
@@ -56,12 +57,12 @@ impl ServiceWorker {
 
     pub fn dispatch_simple_error(address: TrustedServiceWorkerAddress) {
         let service_worker = address.root();
-        service_worker.upcast().fire_event("error");
+        service_worker.upcast().fire_event(atom!("error"));
     }
 
     pub fn set_transition_state(&self, state: ServiceWorkerState) {
         self.state.set(state);
-        self.upcast::<EventTarget>().fire_event("statechange");
+        self.upcast::<EventTarget>().fire_event(Atom::from("statechange"));
     }
 
     pub fn get_script_url(&self) -> Url {

components/script/dom/serviceworkercontainer.rs

@@ -15,6 +15,7 @@ use dom::promise::Promise;
 use dom::serviceworker::ServiceWorker;
 use dom::serviceworkerregistration::ServiceWorkerRegistration;
 use script_thread::ScriptThread;
+use servo_atoms::Atom;
 use std::ascii::AsciiExt;
 use std::default::Default;
 use std::rc::Rc;
@@ -45,7 +46,7 @@ pub trait Controllable {
 impl Controllable for ServiceWorkerContainer {
     fn set_controller(&self, active_worker: &ServiceWorker) {
         self.controller.set(Some(active_worker));
-        self.upcast::<EventTarget>().fire_event("controllerchange");
+        self.upcast::<EventTarget>().fire_event(Atom::from("controllerchange"));
     }
 }
 

components/script/dom/serviceworkerglobalscope.rs

@@ -28,6 +28,7 @@ use net_traits::request::{CredentialsMode, Destination, RequestInit, Type as Req
 use rand::random;
 use script_runtime::{CommonScriptMsg, StackRootTLS, get_reports, new_rt_and_cx, ScriptChan};
 use script_traits::{TimerEvent, WorkerGlobalScopeInit, ScopeThings, ServiceWorkerMsg, WorkerScriptLoadOrigin};
+use servo_atoms::Atom;
 use std::sync::mpsc::{Receiver, RecvError, Select, Sender, channel};
 use std::thread;
 use std::time::Duration;
@@ -268,7 +269,7 @@ impl ServiceWorkerGlobalScope {
                 // TODO XXXcreativcoder This will eventually use a FetchEvent interface to fire event
                 // when we have the Request and Response dom api's implemented
                 // https://slightlyoff.github.io/ServiceWorker/spec/service_worker_1/index.html#fetch-event-section
-                self.upcast::<EventTarget>().fire_event("fetch");
+                self.upcast::<EventTarget>().fire_event(Atom::from("fetch"));
                 let _ = mediator.response_chan.send(None);
             }
         }

components/script/dom/websocket.rs

@@ -498,7 +498,7 @@ impl Runnable for ConnectionEstablishedTask {
         }
 
         // Step 6.
-        ws.upcast().fire_event("open");
+        ws.upcast().fire_event(atom!("open"));
     }
 }
 
@@ -548,7 +548,7 @@ impl Runnable for CloseTask {
 
         // Step 2.
         if self.failed {
-            ws.upcast().fire_event("error");
+            ws.upcast().fire_event(atom!("error"));
         }
 
         // Step 3.

components/script/dom/worker.rs

@@ -138,7 +138,7 @@ impl Worker {
 
     pub fn dispatch_simple_error(address: TrustedWorkerAddress) {
         let worker = address.root();
-        worker.upcast().fire_event("error");
+        worker.upcast().fire_event(atom!("error"));
     }
 
     #[allow(unsafe_code)]