Implement basic interface for MutationObserver and MutationRecord.

components/script/dom/mutationobserver.rs

@@ -0,0 +1,40 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * 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::MutationObserverBinding;
+use dom::bindings::codegen::Bindings::MutationObserverBinding::MutationCallback;
+use dom::bindings::error::Fallible;
+use dom::bindings::js::Root;
+use dom::bindings::reflector::{Reflector, reflect_dom_object};
+use dom::window::Window;
+use dom_struct::dom_struct;
+use script_thread::ScriptThread;
+use std::rc::Rc;
+
+#[dom_struct]
+pub struct MutationObserver {
+    reflector_: Reflector,
+    #[ignore_heap_size_of = "can't measure Rc values"]
+    callback: Rc<MutationCallback>,
+}
+
+impl MutationObserver {
+    fn new(global: &Window, callback: Rc<MutationCallback>) -> Root<MutationObserver> {
+        let boxed_observer = box MutationObserver::new_inherited(callback);
+        reflect_dom_object(boxed_observer, global, MutationObserverBinding::Wrap)
+    }
+
+    fn new_inherited(callback: Rc<MutationCallback>) -> MutationObserver {
+        MutationObserver {
+            reflector_: Reflector::new(),
+            callback: callback,
+        }
+    }
+
+    pub fn Constructor(global: &Window, callback: Rc<MutationCallback>) -> Fallible<Root<MutationObserver>> {
+        let observer = MutationObserver::new(global, callback);
+        ScriptThread::add_mutation_observer(&*observer);
+        Ok(observer)
+    }
+}