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4873 - Support the image map processing for <img ismap/> inside an <a/>

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This commit is contained in:
Shing Lyu 2015-03-12 20:46:16 +08:00
parent 07520de970
commit 7a65b95ae5
7 changed files with 65 additions and 20 deletions
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34
components/script/dom/htmlanchorelement.rs
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@ -2,14 +2,17 @@
* 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::HTMLAnchorElementDerived;
use dom::bindings::codegen::InheritTypes::{ElementCast, HTMLElementCast, NodeCast};
use dom::bindings::codegen::InheritTypes::{HTMLAnchorElementDerived, HTMLImageElementDerived};
use dom::bindings::codegen::InheritTypes::{ElementCast, HTMLElementCast};
use dom::bindings::codegen::InheritTypes::{MouseEventCast, NodeCast};
use dom::bindings::js::{MutNullableJS, JSRef, Temporary, OptionalRootable};
use dom::document::{Document, DocumentHelpers};
use dom::domtokenlist::DOMTokenList;
@ -17,10 +20,12 @@ 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};
use dom::node::{Node, NodeHelpers, NodeTypeId, document_from_node, window_from_node};
use dom::virtualmethods::VirtualMethods;
use dom::window::WindowHelpers;
use std::default::Default;
use std::num::ToPrimitive;
use string_cache::Atom;
use util::str::DOMString;
@ -112,20 +117,35 @@ impl<'a> Activatable for JSRef<'a, HTMLAnchorElement> {
}
//https://html.spec.whatwg.org/multipage/semantics.html#the-a-element:activation-behaviour
fn activation_behavior(&self) {
fn activation_behavior(&self, event: JSRef<Event>, target: JSRef<EventTarget>) {
//Step 1. If the node document is not fully active, abort.
let doc = document_from_node(*self).root();
if !doc.r().is_fully_active() {
return;
}
//TODO: Step 2. Check if browsing context is specified and act accordingly.
//TODO: Step 3. Handle <img ismap/>.
//TODO: Step 4. Download the link is `download` attribute is set.
//Step 3. Handle <img ismap/>.
let element: JSRef<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::to_ref(target).unwrap();
let rect = window_from_node(target_node).root().r().content_box_query(target_node.to_trusted_node_address());
ismap_suffix = Some(
format!("?{},{}", mouse_event.ClientX().to_f32().unwrap() - rect.origin.x.to_frac32_px(),
mouse_event.ClientY().to_f32().unwrap() - rect.origin.y.to_frac32_px())
)
}
}
//TODO: Step 4. Download the link is `download` attribute is set.
let attr = element.get_attribute(&ns!(""), &atom!("href")).root();
match attr {
Some(ref href) => {
let value = href.r().Value();
let value = href.r().Value() + ismap_suffix.as_ref().map(|s| &**s).unwrap_or("");
debug!("clicked on link to {}", value);
doc.r().load_anchor_href(value);
}