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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::bindings::codegen::Bindings::HTMLMetaElementBinding;
use dom::bindings::codegen::Bindings::HTMLMetaElementBinding::HTMLMetaElementMethods;
use dom::bindings::conversions::Castable;
use dom::bindings::js::{Root, RootedReference};
use dom::document::Document;
use dom::element::Element;
use dom::htmlelement::HTMLElement;
use dom::node::{Node, 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 {
htmlelement: HTMLElement,
}
impl HTMLMetaElement {
fn new_inherited(localName: DOMString,
prefix: Option<DOMString>,
document: &Document) -> HTMLMetaElement {
HTMLMetaElement {
htmlelement: HTMLElement::new_inherited(localName, prefix, document)
}
}
#[allow(unrooted_must_root)]
pub fn new(localName: DOMString,
prefix: Option<DOMString>,
document: &Document) -> Root<HTMLMetaElement> {
let element = HTMLMetaElement::new_inherited(localName, prefix, document);
Node::reflect_node(box element, document, HTMLMetaElementBinding::Wrap)
}
fn process_attributes(&self) {
let element = self.upcast::<Element>();
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 = self.upcast::<Element>();
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 win = window_from_node(self);
let LayoutChan(ref layout_chan) = win.r().layout_chan();
layout_chan.send(Msg::AddMetaViewport(translated_rule)).unwrap();
}
}
}
}
}
impl HTMLMetaElementMethods for HTMLMetaElement {
// https://html.spec.whatwg.org/multipage/#dom-meta-name
make_getter!(Name, "name");
// https://html.spec.whatwg.org/multipage/#dom-meta-name
make_setter!(SetName, "name");
// https://html.spec.whatwg.org/multipage/#dom-meta-content
make_getter!(Content, "content");
// https://html.spec.whatwg.org/multipage/#dom-meta-content
make_setter!(SetContent, "content");
}
impl VirtualMethods for HTMLMetaElement {
fn super_type(&self) -> Option<&VirtualMethods> {
Some(self.upcast::<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();
}
}
}
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