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/* 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::activation::Activatable;
use dom::attr::AttrValue;
use dom::bindings::codegen::Bindings::AttrBinding::AttrMethods;
use dom::bindings::codegen::Bindings::HTMLAnchorElementBinding;
use dom::bindings::codegen::Bindings::HTMLAnchorElementBinding::HTMLAnchorElementMethods;
use dom::bindings::codegen::Bindings::MouseEventBinding::MouseEventMethods;
use dom::bindings::codegen::Bindings::NodeBinding::NodeMethods;
use dom::bindings::codegen::InheritTypes::{ElementCast, HTMLElementCast};
use dom::bindings::codegen::InheritTypes::{HTMLAnchorElementDerived, HTMLImageElementDerived};
use dom::bindings::codegen::InheritTypes::{MouseEventCast, NodeCast};
use dom::bindings::js::{JS, MutNullableHeap, Root};
use dom::document::{Document, DocumentHelpers};
use dom::domtokenlist::DOMTokenList;
use dom::element::{Element, AttributeHandlers, ElementTypeId};
use dom::event::Event;
use dom::eventtarget::{EventTarget, EventTargetTypeId};
use dom::htmlelement::{HTMLElement, HTMLElementTypeId};
use dom::node::{Node, NodeHelpers, NodeTypeId, document_from_node, window_from_node};
use dom::virtualmethods::VirtualMethods;
use dom::window::WindowHelpers;
use util::str::DOMString;
use num::ToPrimitive;
use string_cache::Atom;
use url::UrlParser;
use std::default::Default;
#[dom_struct]
#[derive(HeapSizeOf)]
pub struct HTMLAnchorElement {
htmlelement: HTMLElement,
rel_list: MutNullableHeap<JS<DOMTokenList>>,
}
impl HTMLAnchorElementDerived for EventTarget {
fn is_htmlanchorelement(&self) -> bool {
*self.type_id() ==
EventTargetTypeId::Node(
NodeTypeId::Element(ElementTypeId::HTMLElement(HTMLElementTypeId::HTMLAnchorElement)))
}
}
impl HTMLAnchorElement {
fn new_inherited(localName: DOMString,
prefix: Option<DOMString>,
document: &Document) -> HTMLAnchorElement {
HTMLAnchorElement {
htmlelement:
HTMLElement::new_inherited(HTMLElementTypeId::HTMLAnchorElement, localName, prefix, document),
rel_list: Default::default(),
}
}
#[allow(unrooted_must_root)]
pub fn new(localName: DOMString,
prefix: Option<DOMString>,
document: &Document) -> Root<HTMLAnchorElement> {
let element = HTMLAnchorElement::new_inherited(localName, prefix, document);
Node::reflect_node(box element, document, HTMLAnchorElementBinding::Wrap)
}
}
impl VirtualMethods for HTMLAnchorElement {
fn super_type<'b>(&'b self) -> Option<&'b VirtualMethods> {
let htmlelement: &HTMLElement = HTMLElementCast::from_ref(self);
Some(htmlelement as &VirtualMethods)
}
fn parse_plain_attribute(&self, name: &Atom, value: DOMString) -> AttrValue {
match name {
&atom!("rel") => AttrValue::from_serialized_tokenlist(value),
_ => self.super_type().unwrap().parse_plain_attribute(name, value),
}
}
}
impl<'a> HTMLAnchorElementMethods for &'a HTMLAnchorElement {
// https://html.spec.whatwg.org/multipage/#dom-a-text
fn Text(self) -> DOMString {
let node = NodeCast::from_ref(self);
node.GetTextContent().unwrap()
}
// https://html.spec.whatwg.org/multipage/#dom-a-text
fn SetText(self, value: DOMString) {
let node = NodeCast::from_ref(self);
node.SetTextContent(Some(value))
}
// https://html.spec.whatwg.org/multipage/#dom-a-rellist
fn RelList(self) -> Root<DOMTokenList> {
self.rel_list.or_init(|| {
DOMTokenList::new(ElementCast::from_ref(self), &atom!("rel"))
})
}
}
impl<'a> Activatable for &'a HTMLAnchorElement {
fn as_element<'b>(&'b self) -> &'b Element {
ElementCast::from_ref(*self)
}
fn is_instance_activatable(&self) -> bool {
// https://html.spec.whatwg.org/multipage/#hyperlink
// "a [...] element[s] with an href attribute [...] must [..] create a
// hyperlink"
// https://html.spec.whatwg.org/multipage/#the-a-element
// "The activation behaviour of a elements *that create hyperlinks*"
ElementCast::from_ref(*self).has_attribute(&atom!("href"))
}
//TODO:https://html.spec.whatwg.org/multipage/#the-a-element
fn pre_click_activation(&self) {
}
//TODO:https://html.spec.whatwg.org/multipage/#the-a-element
// https://html.spec.whatwg.org/multipage/#run-canceled-activation-steps
fn canceled_activation(&self) {
}
//https://html.spec.whatwg.org/multipage/#the-a-element:activation-behaviour
fn activation_behavior(&self, event: &Event, target: &EventTarget) {
//Step 1. If the node document is not fully active, abort.
let doc = document_from_node(*self);
if !doc.r().is_fully_active() {
return;
}
//TODO: Step 2. Check if browsing context is specified and act accordingly.
//Step 3. Handle <img ismap/>.
let element = ElementCast::from_ref(*self);
let mouse_event = MouseEventCast::to_ref(event).unwrap();
let mut ismap_suffix = None;
if let Some(element) = ElementCast::to_ref(target) {
if target.is_htmlimageelement() && element.has_attribute(&atom!("ismap")) {
let target_node = NodeCast::from_ref(element);
let rect = window_from_node(target_node).r().content_box_query(
target_node.to_trusted_node_address());
ismap_suffix = Some(
format!("?{},{}", mouse_event.ClientX().to_f32().unwrap() - rect.origin.x.to_f32_px(),
mouse_event.ClientY().to_f32().unwrap() - rect.origin.y.to_f32_px())
)
}
}
// Step 4.
//TODO: Download the link is `download` attribute is set.
follow_hyperlink(element, ismap_suffix);
}
//TODO:https://html.spec.whatwg.org/multipage/#the-a-element
fn implicit_submission(&self, _ctrlKey: bool, _shiftKey: bool, _altKey: bool, _metaKey: bool) {
}
}
/// https://html.spec.whatwg.org/multipage/#following-hyperlinks-2
fn follow_hyperlink(subject: &Element, hyperlink_suffix: Option<DOMString>) {
// Step 1: replace.
// Step 2: source browsing context.
// Step 3: target browsing context.
// Step 4.
let attribute = subject.get_attribute(&ns!(""), &atom!("href")).unwrap();
let mut href = attribute.Value();
// Step 6.
// https://www.w3.org/Bugs/Public/show_bug.cgi?id=28925
if let Some(suffix) = hyperlink_suffix {
href.push_str(&suffix);
}
// Step 4-5.
let document = document_from_node(subject);
let url = match UrlParser::new().base_url(&document.url()).parse(&href) {
Ok(url) => url,
Err(_) => return,
};
// Step 7.
debug!("following hyperlink to {}", url.serialize());
let window = document.window();
window.load_url(url);
}
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