Auto merge of #10714 - KiChjang:user-interaction-task, r=Ms2ger

Implement user interaction task source

Part of #7959.

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---
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10 files changed, 112 insertions, 64 deletions

diff --git a/components/script/dom/bindings/global.rs b/components/script/dom/bindings/global.rs
index 17a2688a910..7dea10fd0a0 100644
--- a/components/script/dom/bindings/global.rs
+++ b/components/script/dom/bindings/global.rs
@@ -175,15 +175,6 @@ impl<'a> GlobalRef<'a> {
 
     /// `ScriptChan` used to send messages to the event loop of this global's
     /// thread.
-    pub fn user_interaction_task_source(&self) -> Box<ScriptChan + Send> {
-        match *self {
-            GlobalRef::Window(ref window) => window.user_interaction_task_source(),
-            GlobalRef::Worker(ref worker) => worker.script_chan(),
-        }
-    }
-
-    /// `ScriptChan` used to send messages to the event loop of this global's
-    /// thread.
     pub fn networking_task_source(&self) -> Box<ScriptChan + Send> {
         match *self {
             GlobalRef::Window(ref window) => window.networking_task_source(),
diff --git a/components/script/dom/htmldetailselement.rs b/components/script/dom/htmldetailselement.rs
index 3f00e53220c..724c9cff614 100644
--- a/components/script/dom/htmldetailselement.rs
+++ b/components/script/dom/htmldetailselement.rs
@@ -74,7 +74,7 @@ impl VirtualMethods for HTMLDetailsElement {
             let window = window.r();
             let task_source = window.dom_manipulation_task_source();
             let details = Trusted::new(self);
-            let runnable = box ToggleEventRunnable {
+            let runnable = box DetailsNotificationRunnable {
                 element: details,
                 toggle_number: counter
             };
@@ -83,13 +83,13 @@ impl VirtualMethods for HTMLDetailsElement {
     }
 }
 
-pub struct ToggleEventRunnable {
+pub struct DetailsNotificationRunnable {
     element: Trusted<HTMLDetailsElement>,
     toggle_number: u32
 }
 
-impl Runnable for ToggleEventRunnable {
-    fn handler(self: Box<ToggleEventRunnable>) {
+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_simple_event("toggle");
diff --git a/components/script/dom/htmlinputelement.rs b/components/script/dom/htmlinputelement.rs
index 0e675b35b27..a226a2e224c 100644
--- a/components/script/dom/htmlinputelement.rs
+++ b/components/script/dom/htmlinputelement.rs
@@ -12,10 +12,8 @@ use dom::bindings::codegen::Bindings::HTMLInputElementBinding;
 use dom::bindings::codegen::Bindings::HTMLInputElementBinding::HTMLInputElementMethods;
 use dom::bindings::codegen::Bindings::KeyboardEventBinding::KeyboardEventMethods;
 use dom::bindings::error::{Error, ErrorResult};
-use dom::bindings::global::GlobalRef;
 use dom::bindings::inheritance::Castable;
 use dom::bindings::js::{JS, LayoutJS, Root, RootedReference};
-use dom::bindings::refcounted::Trusted;
 use dom::document::Document;
 use dom::element::{AttributeMutation, Element, RawLayoutElementHelpers, LayoutElementHelpers};
 use dom::event::{Event, EventBubbles, EventCancelable};
@@ -31,9 +29,7 @@ use dom::nodelist::NodeList;
 use dom::validation::Validatable;
 use dom::virtualmethods::VirtualMethods;
 use msg::constellation_msg::ConstellationChan;
-use script_runtime::CommonScriptMsg;
-use script_runtime::ScriptThreadEventCategory::InputEvent;
-use script_thread::Runnable;
+use script_runtime::ScriptChan;
 use script_traits::ScriptMsg as ConstellationMsg;
 use std::borrow::ToOwned;
 use std::cell::Cell;
@@ -549,6 +545,12 @@ impl HTMLInputElementMethods for HTMLInputElement {
         let direction = direction.map_or(SelectionDirection::None, |d| SelectionDirection::from(d));
         self.textinput.borrow_mut().selection_direction = direction;
         self.textinput.borrow_mut().set_selection_range(start, end);
+        let window = window_from_node(self);
+        let _ = window.user_interaction_task_source().queue_event(
+            &self.upcast(),
+            atom!("select"),
+            EventBubbles::Bubbles,
+            EventCancelable::NotCancelable);
         self.upcast::<Node>().dirty(NodeDamage::OtherNodeDamage);
     }
 }
@@ -919,7 +921,12 @@ impl VirtualMethods for HTMLInputElement {
                             self.value_changed.set(true);
 
                             if event.IsTrusted() {
-                                ChangeEventRunnable::send(self.upcast::<Node>());
+                                let window = window_from_node(self);
+                                let _ = window.user_interaction_task_source().queue_event(
+                                    &self.upcast(),
+                                    atom!("input"),
+                                    EventBubbles::Bubbles,
+                                    EventCancelable::NotCancelable);
                             }
 
                             self.upcast::<Node>().dirty(NodeDamage::OtherNodeDamage);
@@ -1148,31 +1155,3 @@ impl Activatable for HTMLInputElement {
         }
     }
 }
-
-pub struct ChangeEventRunnable {
-    element: Trusted<Node>,
-}
-
-impl ChangeEventRunnable {
-    pub fn send(node: &Node) {
-        let handler = Trusted::new(node);
-        let dispatcher = ChangeEventRunnable {
-            element: handler,
-        };
-        let chan = window_from_node(node).user_interaction_task_source();
-        let _ = chan.send(CommonScriptMsg::RunnableMsg(InputEvent, box dispatcher));
-    }
-}
-
-impl Runnable for ChangeEventRunnable {
-    fn handler(self: Box<ChangeEventRunnable>) {
-        let target = self.element.root();
-        let window = window_from_node(target.r());
-        let window = window.r();
-        let event = Event::new(GlobalRef::Window(window),
-                               atom!("input"),
-                               EventBubbles::Bubbles,
-                               EventCancelable::NotCancelable);
-        target.upcast::<EventTarget>().dispatch_event(&event);
-    }
-}
diff --git a/components/script/dom/htmltextareaelement.rs b/components/script/dom/htmltextareaelement.rs
index 597c9a2bb60..122d73e8553 100644
--- a/components/script/dom/htmltextareaelement.rs
+++ b/components/script/dom/htmltextareaelement.rs
@@ -14,18 +14,18 @@ use dom::bindings::reflector::{Reflectable};
 use dom::document::Document;
 use dom::element::RawLayoutElementHelpers;
 use dom::element::{AttributeMutation, Element};
-use dom::event::{Event};
+use dom::event::{Event, EventBubbles, EventCancelable};
 use dom::htmlelement::HTMLElement;
 use dom::htmlfieldsetelement::HTMLFieldSetElement;
 use dom::htmlformelement::{FormControl, HTMLFormElement};
-use dom::htmlinputelement::ChangeEventRunnable;
 use dom::keyboardevent::KeyboardEvent;
 use dom::node::{ChildrenMutation, Node, NodeDamage, UnbindContext};
-use dom::node::{document_from_node};
+use dom::node::{document_from_node, window_from_node};
 use dom::nodelist::NodeList;
 use dom::validation::Validatable;
 use dom::virtualmethods::VirtualMethods;
 use msg::constellation_msg::ConstellationChan;
+use script_runtime::ScriptChan;
 use script_traits::ScriptMsg as ConstellationMsg;
 use std::cell::Cell;
 use std::ops::Range;
@@ -256,6 +256,12 @@ impl HTMLTextAreaElementMethods for HTMLTextAreaElement {
         let direction = direction.map_or(SelectionDirection::None, |d| SelectionDirection::from(d));
         self.textinput.borrow_mut().selection_direction = direction;
         self.textinput.borrow_mut().set_selection_range(start, end);
+        let window = window_from_node(self);
+        let _ = window.user_interaction_task_source().queue_event(
+            &self.upcast(),
+            atom!("select"),
+            EventBubbles::Bubbles,
+            EventCancelable::NotCancelable);
         self.upcast::<Node>().dirty(NodeDamage::OtherNodeDamage);
     }
 }
@@ -373,7 +379,12 @@ impl VirtualMethods for HTMLTextAreaElement {
                         self.value_changed.set(true);
 
                         if event.IsTrusted() {
-                            ChangeEventRunnable::send(self.upcast::<Node>());
+                            let window = window_from_node(self);
+                            let _ = window.user_interaction_task_source().queue_event(
+                                &self.upcast(),
+                                atom!("input"),
+                                EventBubbles::Bubbles,
+                                EventCancelable::NotCancelable);
                         }
 
                         self.upcast::<Node>().dirty(NodeDamage::OtherNodeDamage);
diff --git a/components/script/dom/window.rs b/components/script/dom/window.rs
index cb8f0c59639..9f993c25461 100644
--- a/components/script/dom/window.rs
+++ b/components/script/dom/window.rs
@@ -275,7 +275,7 @@ impl Window {
         self.dom_manipulation_task_source.clone()
     }
 
-    pub fn user_interaction_task_source(&self) -> Box<ScriptChan + Send> {
+    pub fn user_interaction_task_source(&self) -> UserInteractionTaskSource {
         self.user_interaction_task_source.clone()
     }
 
diff --git a/components/script/script_thread.rs b/components/script/script_thread.rs
index 9bd7ce26c4f..02f8d9a83ea 100644
--- a/components/script/script_thread.rs
+++ b/components/script/script_thread.rs
@@ -99,7 +99,7 @@ use task_source::dom_manipulation::{DOMManipulationTaskSource, DOMManipulationTa
 use task_source::file_reading::FileReadingTaskSource;
 use task_source::history_traversal::HistoryTraversalTaskSource;
 use task_source::networking::NetworkingTaskSource;
-use task_source::user_interaction::UserInteractionTaskSource;
+use task_source::user_interaction::{UserInteractionTaskSource, UserInteractionTask};
 use time::Tm;
 use url::{Url, Position};
 use util::opts;
@@ -222,6 +222,8 @@ pub enum MainThreadScriptMsg {
     Navigate(PipelineId, LoadData),
     /// Tasks that originate from the DOM manipulation task source
     DOMManipulation(DOMManipulationTask),
+    /// Tasks that originate from the user interaction task source
+    UserInteraction(UserInteractionTask),
 }
 
 impl OpaqueSender<CommonScriptMsg> for Box<ScriptChan + Send> {
@@ -928,8 +930,10 @@ impl ScriptThread {
                 LiveDOMReferences::cleanup(addr),
             MainThreadScriptMsg::Common(CommonScriptMsg::CollectReports(reports_chan)) =>
                 self.collect_reports(reports_chan),
-            MainThreadScriptMsg::DOMManipulation(msg) =>
-                msg.handle_msg(self),
+            MainThreadScriptMsg::DOMManipulation(task) =>
+                task.handle_task(self),
+            MainThreadScriptMsg::UserInteraction(task) =>
+                task.handle_task(),
         }
     }
 
diff --git a/components/script/task_source/dom_manipulation.rs b/components/script/task_source/dom_manipulation.rs
index 5993825a1be..05b0722f889 100644
--- a/components/script/task_source/dom_manipulation.rs
+++ b/components/script/task_source/dom_manipulation.rs
@@ -18,8 +18,10 @@ impl TaskSource<DOMManipulationTask> for DOMManipulationTaskSource {
     fn queue(&self, msg: DOMManipulationTask) -> Result<(), ()> {
         self.0.send(MainThreadScriptMsg::DOMManipulation(msg)).map_err(|_| ())
     }
+}
 
-    fn clone(&self) -> Box<TaskSource<DOMManipulationTask> + Send> {
+impl DOMManipulationTaskSource {
+    pub fn clone(&self) -> Box<TaskSource<DOMManipulationTask> + Send> {
         box DOMManipulationTaskSource((&self.0).clone())
     }
 }
@@ -42,7 +44,7 @@ pub enum DOMManipulationTask {
 }
 
 impl DOMManipulationTask {
-    pub fn handle_msg(self, script_thread: &ScriptThread) {
+    pub fn handle_task(self, script_thread: &ScriptThread) {
         use self::DOMManipulationTask::*;
 
         match self {
diff --git a/components/script/task_source/mod.rs b/components/script/task_source/mod.rs
index 74dd7347e9e..fe2d159b04a 100644
--- a/components/script/task_source/mod.rs
+++ b/components/script/task_source/mod.rs
@@ -12,5 +12,4 @@ use std::result::Result;
 
 pub trait TaskSource<T> {
     fn queue(&self, msg: T) -> Result<(), ()>;
-    fn clone(&self) -> Box<TaskSource<T> + Send>;
 }
diff --git a/components/script/task_source/user_interaction.rs b/components/script/task_source/user_interaction.rs
index 8f79b8ddaed..59d7d728185 100644
--- a/components/script/task_source/user_interaction.rs
+++ b/components/script/task_source/user_interaction.rs
@@ -2,19 +2,55 @@
  * 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 script_runtime::{CommonScriptMsg, ScriptChan};
+use dom::bindings::refcounted::Trusted;
+use dom::event::{EventBubbles, EventCancelable};
+use dom::eventtarget::EventTarget;
+use script_runtime::ScriptChan;
 use script_thread::MainThreadScriptMsg;
+use std::result::Result;
 use std::sync::mpsc::Sender;
+use string_cache::Atom;
+use task_source::TaskSource;
 
 #[derive(JSTraceable)]
 pub struct UserInteractionTaskSource(pub Sender<MainThreadScriptMsg>);
 
-impl ScriptChan for UserInteractionTaskSource {
-    fn send(&self, msg: CommonScriptMsg) -> Result<(), ()> {
-        self.0.send(MainThreadScriptMsg::Common(msg)).map_err(|_| ())
+impl TaskSource<UserInteractionTask> for UserInteractionTaskSource {
+    fn queue(&self, msg: UserInteractionTask) -> Result<(), ()> {
+        self.0.send(MainThreadScriptMsg::UserInteraction(msg)).map_err(|_| ())
     }
+}
+
+impl UserInteractionTaskSource {
+    pub fn queue_event(&self,
+                   target: &EventTarget,
+                   name: Atom,
+                   bubbles: EventBubbles,
+                   cancelable: EventCancelable) {
+        let target = Trusted::new(target);
+        let _ = self.0.send(MainThreadScriptMsg::UserInteraction(UserInteractionTask::FireEvent(
+            target, name, bubbles, cancelable)));
+    }
+
+    pub fn clone(&self) -> UserInteractionTaskSource {
+        UserInteractionTaskSource((&self.0).clone())
+    }
+}
+
+pub enum UserInteractionTask {
+    // https://dom.spec.whatwg.org/#concept-event-fire
+    FireEvent(Trusted<EventTarget>, Atom, EventBubbles, EventCancelable),
+}
+
+impl UserInteractionTask {
+    pub fn handle_task(self) {
+        use self::UserInteractionTask::*;
 
-    fn clone(&self) -> Box<ScriptChan + Send> {
-        box UserInteractionTaskSource((&self.0).clone())
+        match self {
+            FireEvent(element, name, bubbles, cancelable) => {
+                let target = element.root();
+                target.fire_event(&*name, bubbles, cancelable);
+            }
+        }
     }
 }
diff --git a/tests/wpt/web-platform-tests/html/semantics/forms/textfieldselection/textfieldselection-setSelectionRange.html b/tests/wpt/web-platform-tests/html/semantics/forms/textfieldselection/textfieldselection-setSelectionRange.html
index 06915a81a8b..5f525736201 100644
--- a/tests/wpt/web-platform-tests/html/semantics/forms/textfieldselection/textfieldselection-setSelectionRange.html
+++ b/tests/wpt/web-platform-tests/html/semantics/forms/textfieldselection/textfieldselection-setSelectionRange.html
@@ -116,6 +116,19 @@ test(function() {
   },'input setSelectionRange(undefined,1)');
 },"test of input.setSelectionRange");
 
+async_test(function() {
+  var q = false;
+  var input = document.getElementById("a");
+  input.addEventListener("select", this.step_func_done(function(e) {
+    assert_true(q, "event should be queued");
+    assert_true(e.isTrusted, "event is trusted");
+    assert_true(e.bubbles, "event bubbles");
+    assert_false(e.cancelable, "event is not cancelable");
+  }));
+  input.setSelectionRange(0, 1);
+  q = true;
+}, "input setSelectionRange fires a select event");
+
 test(function() {
   var textarea = document.getElementById("b");
   test(function() {
@@ -221,4 +234,17 @@ test(function() {
     assert_equals(textarea.selectionEnd, 1, "element.selectionStart should be 1");
   },'textarea setSelectionRange(undefined,1)');
 },"test of textarea.setSelectionRange");
+
+async_test(function() {
+  var q = false;
+  var textarea = document.getElementById("b");
+  textarea.addEventListener("select", this.step_func_done(function(e) {
+    assert_true(q, "event should be queued");
+    assert_true(e.isTrusted, "event is trusted");
+    assert_true(e.bubbles, "event bubbles");
+    assert_false(e.cancelable, "event is not cancelable");
+  }));
+  textarea.setSelectionRange(0, 1);
+  q = true;
+}, "textarea setSelectionRange fires a select event");
 </script>