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Handle <meta name=viewport> elements when added to document

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This commit is contained in:
James Gilbertson 2015-05-25 20:05:09 -06:00 • committed by Jamie Gilbertson
parent 61f7a0a1ee
commit d0ace58452
6 changed files with 107 additions and 5 deletions
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57
components/script/dom/htmlmetaelement.rs
View file

@ -5,13 +5,18 @@
use dom::bindings::codegen::Bindings::HTMLMetaElementBinding;
use dom::bindings::codegen::Bindings::HTMLMetaElementBinding::HTMLMetaElementMethods;
use dom::bindings::codegen::InheritTypes::HTMLMetaElementDerived;
use dom::bindings::js::Root;
use dom::bindings::codegen::InheritTypes::{ElementCast, HTMLElementCast, NodeCast};
use dom::bindings::js::{Root, RootedReference};
use dom::document::Document;
use dom::element::ElementTypeId;
use dom::eventtarget::{EventTarget, EventTargetTypeId};
use dom::htmlelement::{HTMLElement, HTMLElementTypeId};
use dom::node::{Node, NodeTypeId};
use util::str::DOMString;
use dom::node::{Node, NodeTypeId, window_from_node};
use dom::virtualmethods::VirtualMethods;
use layout_interface::{LayoutChan, Msg};
use std::ascii::AsciiExt;
use style::viewport::ViewportRule;
use util::str::{DOMString, HTML_SPACE_CHARACTERS};
#[dom_struct]
pub struct HTMLMetaElement {
@ -42,6 +47,35 @@ impl HTMLMetaElement {
let element = HTMLMetaElement::new_inherited(localName, prefix, document);
Node::reflect_node(box element, document, HTMLMetaElementBinding::Wrap)
}
fn process_attributes(&self) {
let element = ElementCast::from_ref(self);
if let Some(name) = element.get_attribute(&ns!(""), &atom!("name")).r() {
let name = name.value().to_ascii_lowercase();
let name = name.trim_matches(HTML_SPACE_CHARACTERS);
match name {
"viewport" => self.translate_viewport(),
_ => {}
}
}
}
fn translate_viewport(&self) {
let element = ElementCast::from_ref(self);
if let Some(content) = element.get_attribute(&ns!(""), &atom!("content")).r() {
let content = content.value();
if !content.is_empty() {
if let Some(translated_rule) = ViewportRule::from_meta(&**content) {
let node = NodeCast::from_ref(self);
let win = window_from_node(node);
let LayoutChan(ref layout_chan) = win.r().layout_chan();
layout_chan.send(Msg::AddMetaViewport(translated_rule)).unwrap();
}
}
}
}
}
impl HTMLMetaElementMethods for HTMLMetaElement {
@ -57,3 +91,20 @@ impl HTMLMetaElementMethods for HTMLMetaElement {
// https://html.spec.whatwg.org/multipage/#dom-meta-content
make_setter!(SetContent, "content");
}
impl VirtualMethods for HTMLMetaElement {
fn super_type<'b>(&'b self) -> Option<&'b VirtualMethods> {
let htmlelement: &HTMLElement = HTMLElementCast::from_ref(self);
Some(htmlelement as &VirtualMethods)
}
fn bind_to_tree(&self, tree_in_doc: bool) {
if let Some(ref s) = self.super_type() {
s.bind_to_tree(tree_in_doc);
}
if tree_in_doc {
self.process_attributes();
}
}
}

5
components/script/dom/virtualmethods.rs
View file

@ -20,6 +20,7 @@ use dom::bindings::codegen::InheritTypes::HTMLIFrameElementCast;
use dom::bindings::codegen::InheritTypes::HTMLImageElementCast;
use dom::bindings::codegen::InheritTypes::HTMLInputElementCast;
use dom::bindings::codegen::InheritTypes::HTMLLinkElementCast;
use dom::bindings::codegen::InheritTypes::HTMLMetaElementCast;
use dom::bindings::codegen::InheritTypes::HTMLObjectElementCast;
use dom::bindings::codegen::InheritTypes::HTMLOptGroupElementCast;
use dom::bindings::codegen::InheritTypes::HTMLOptionElementCast;
@ -179,6 +180,10 @@ pub fn vtable_for<'a>(node: &'a Node) -> &'a (VirtualMethods + 'a) {
let element = HTMLLinkElementCast::to_ref(node).unwrap();
element as &'a (VirtualMethods + 'a)
}
NodeTypeId::Element(ElementTypeId::HTMLElement(HTMLElementTypeId::HTMLMetaElement)) => {
let element = HTMLMetaElementCast::to_ref(node).unwrap();
element as &'a (VirtualMethods + 'a)
}
NodeTypeId::Element(ElementTypeId::HTMLElement(HTMLElementTypeId::HTMLObjectElement)) => {
let element = HTMLObjectElementCast::to_ref(node).unwrap();
element as &'a (VirtualMethods + 'a)