servo/components/script/dom/activation.rs
Rebecca d6678a184b Call synthetic_click_activation for all clicks
Moved synthetic_click_actiavtion out of Activatable trait so it can be
called by all elements (not just activatable). Calls appropriately
from click. Also updates the isdisabled check in click to check for all
types of elements
2016-03-10 14:43:33 -05:00

98 lines
3.4 KiB
Rust

/* 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::EventBinding::EventMethods;
use dom::bindings::inheritance::Castable;
use dom::element::Element;
use dom::event::{Event, EventBubbles, EventCancelable};
use dom::eventtarget::EventTarget;
use dom::mouseevent::MouseEvent;
use dom::node::window_from_node;
use util::str::DOMString;
/// Trait for elements with defined activation behavior
pub trait Activatable {
fn as_element(&self) -> ∈
// 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://html.spec.whatwg.org/multipage/#run-canceled-activation-steps
fn canceled_activation(&self);
// https://html.spec.whatwg.org/multipage/#run-post-click-activation-steps
fn activation_behavior(&self, event: &Event, target: &EventTarget);
// https://html.spec.whatwg.org/multipage/#implicit-submission
fn implicit_submission(&self, ctrlKey: bool, shiftKey: bool, altKey: bool, metaKey: bool);
}
/// 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,
ctrlKey: bool,
shiftKey: bool,
altKey: bool,
metaKey: 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.r(),
DOMString::from("click"),
EventBubbles::DoesNotBubble,
EventCancelable::NotCancelable,
Some(win.r()),
1,
0,
0,
0,
0,
ctrlKey,
shiftKey,
altKey,
metaKey,
0,
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);
}