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770b348091
This is the second half of switching over to WebRender for hit testing. Now that WebRender gives us the location of the hit tested point in the display item, we can use that to calculate text index.
116 lines
4 KiB
Rust
116 lines
4 KiB
Rust
/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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use dom::bindings::codegen::Bindings::EventBinding::EventMethods;
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use dom::bindings::inheritance::Castable;
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use dom::bindings::str::DOMString;
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use dom::element::Element;
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use dom::event::{Event, EventBubbles, EventCancelable};
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use dom::eventtarget::EventTarget;
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use dom::mouseevent::MouseEvent;
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use dom::node::window_from_node;
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use dom::window::ReflowReason;
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use script_layout_interface::message::ReflowGoal;
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/// Trait for elements with defined activation behavior
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pub trait Activatable {
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fn as_element(&self) -> ∈
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// Is this particular instance of the element activatable?
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fn is_instance_activatable(&self) -> bool;
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// https://html.spec.whatwg.org/multipage/#run-pre-click-activation-steps
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fn pre_click_activation(&self);
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// https://html.spec.whatwg.org/multipage/#run-canceled-activation-steps
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fn canceled_activation(&self);
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// https://html.spec.whatwg.org/multipage/#run-post-click-activation-steps
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fn activation_behavior(&self, event: &Event, target: &EventTarget);
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// https://html.spec.whatwg.org/multipage/#implicit-submission
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fn implicit_submission(&self, ctrl_key: bool, shift_key: bool, alt_key: bool, meta_key: bool);
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// https://html.spec.whatwg.org/multipage/#concept-selector-active
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fn enter_formal_activation_state(&self) {
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self.as_element().set_active_state(true);
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let win = window_from_node(self.as_element());
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win.reflow(ReflowGoal::Full, ReflowReason::ElementStateChanged);
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}
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fn exit_formal_activation_state(&self) {
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self.as_element().set_active_state(false);
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let win = window_from_node(self.as_element());
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win.reflow(ReflowGoal::Full, ReflowReason::ElementStateChanged);
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}
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}
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/// Whether an activation was initiated via the click() method
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#[derive(PartialEq)]
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pub enum ActivationSource {
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FromClick,
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NotFromClick,
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}
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// https://html.spec.whatwg.org/multipage/#run-synthetic-click-activation-steps
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pub fn synthetic_click_activation(element: &Element,
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ctrl_key: bool,
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shift_key: bool,
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alt_key: bool,
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meta_key: bool,
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source: ActivationSource) {
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// Step 1
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if element.click_in_progress() {
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return;
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}
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// Step 2
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element.set_click_in_progress(true);
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// Step 3
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let activatable = element.as_maybe_activatable();
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if let Some(a) = activatable {
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a.pre_click_activation();
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}
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// Step 4
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// https://html.spec.whatwg.org/multipage/#fire-a-synthetic-mouse-event
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let win = window_from_node(element);
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let target = element.upcast::<EventTarget>();
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let mouse = MouseEvent::new(&win,
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DOMString::from("click"),
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EventBubbles::DoesNotBubble,
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EventCancelable::NotCancelable,
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Some(&win),
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1,
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0,
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0,
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0,
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0,
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ctrl_key,
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shift_key,
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alt_key,
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meta_key,
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0,
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None,
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None);
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let event = mouse.upcast::<Event>();
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if source == ActivationSource::FromClick {
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event.set_trusted(false);
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}
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target.dispatch_event(event);
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// Step 5
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if let Some(a) = activatable {
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if event.DefaultPrevented() {
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a.canceled_activation();
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} else {
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// post click activation
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a.activation_behavior(event, target);
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}
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}
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// Step 6
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element.set_click_in_progress(false);
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}
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