Event dispatch rewritten to resemble spec more often, activate on clicks better

components/script/dom/activation.rs

@@ -2,17 +2,13 @@
  * License, v. 2.0. If a copy of the MPL was not distributed with this
  * file, You can obtain one at https://mozilla.org/MPL/2.0/. */
 
-use crate::dom::bindings::codegen::Bindings::EventBinding::EventMethods;
-use crate::dom::bindings::inheritance::Castable;
-use crate::dom::bindings::str::DOMString;
 use crate::dom::element::Element;
-use crate::dom::event::{Event, EventBubbles, EventCancelable};
+use crate::dom::event::Event;
 use crate::dom::eventtarget::EventTarget;
-use crate::dom::mouseevent::MouseEvent;
+use crate::dom::htmlinputelement::InputActivationState;
 use crate::dom::node::window_from_node;
 use crate::dom::window::ReflowReason;
 use script_layout_interface::message::ReflowGoal;
-use script_traits::MouseButton;
 
 /// Trait for elements with defined activation behavior
 pub trait Activatable {
@@ -21,13 +17,17 @@ pub trait Activatable {
     // Is this particular instance of the element activatable?
     fn is_instance_activatable(&self) -> bool;
 
-    // https://html.spec.whatwg.org/multipage/#run-pre-click-activation-steps
-    fn pre_click_activation(&self);
+    // https://dom.spec.whatwg.org/#eventtarget-legacy-pre-activation-behavior
+    fn legacy_pre_activation_behavior(&self) -> Option<InputActivationState> {
+        None
+    }
 
-    // https://html.spec.whatwg.org/multipage/#run-canceled-activation-steps
-    fn canceled_activation(&self);
+    // https://dom.spec.whatwg.org/#eventtarget-legacy-canceled-activation-behavior
+    fn legacy_canceled_activation_behavior(&self, _state_before: Option<InputActivationState>) {}
 
-    // https://html.spec.whatwg.org/multipage/#run-post-click-activation-steps
+    // https://dom.spec.whatwg.org/#eventtarget-activation-behavior
+    // event and target are used only by HTMLAnchorElement, in the case
+    // where the target is an <img ismap> so the href gets coordinates appended
     fn activation_behavior(&self, event: &Event, target: &EventTarget);
 
     // https://html.spec.whatwg.org/multipage/#concept-selector-active
@@ -45,75 +45,3 @@ pub trait Activatable {
         win.reflow(ReflowGoal::Full, ReflowReason::ElementStateChanged);
     }
 }
-
-/// Whether an activation was initiated via the click() method
-#[derive(PartialEq)]
-pub enum ActivationSource {
-    FromClick,
-    NotFromClick,
-}
-
-// https://html.spec.whatwg.org/multipage/#run-synthetic-click-activation-steps
-pub fn synthetic_click_activation(
-    element: &Element,
-    ctrl_key: bool,
-    shift_key: bool,
-    alt_key: bool,
-    meta_key: bool,
-    source: ActivationSource,
-) {
-    // Step 1
-    if element.click_in_progress() {
-        return;
-    }
-    // Step 2
-    element.set_click_in_progress(true);
-    // Step 3
-    let activatable = element.as_maybe_activatable();
-    if let Some(a) = activatable {
-        a.pre_click_activation();
-    }
-
-    // Step 4
-    // https://html.spec.whatwg.org/multipage/#fire-a-synthetic-mouse-event
-    let win = window_from_node(element);
-    let target = element.upcast::<EventTarget>();
-    let mouse = MouseEvent::new(
-        &win,
-        DOMString::from("click"),
-        EventBubbles::DoesNotBubble,
-        EventCancelable::NotCancelable,
-        Some(&win),
-        1,
-        0,
-        0,
-        0,
-        0,
-        ctrl_key,
-        shift_key,
-        alt_key,
-        meta_key,
-        0,
-        MouseButton::Left as u16,
-        None,
-        None,
-    );
-    let event = mouse.upcast::<Event>();
-    if source == ActivationSource::FromClick {
-        event.set_trusted(false);
-    }
-    target.dispatch_event(event);
-
-    // Step 5
-    if let Some(a) = activatable {
-        if event.DefaultPrevented() {
-            a.canceled_activation();
-        } else {
-            // post click activation
-            a.activation_behavior(event, target);
-        }
-    }
-
-    // Step 6
-    element.set_click_in_progress(false);
-}