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7b40cc9fd7
This virtual method mimics the behaviour of mutation observers and make it more viable than the older child_inserted(), which didn't cover removed nodes and was called as many times as there were inserted nodes. A few other shortcomings where remove_child() was called directly instead of Node::remove() were also fixed while at it.
95 lines
3.4 KiB
Rust
95 lines
3.4 KiB
Rust
/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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use dom::bindings::codegen::Bindings::HTMLTitleElementBinding;
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use dom::bindings::codegen::Bindings::HTMLTitleElementBinding::HTMLTitleElementMethods;
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use dom::bindings::codegen::Bindings::NodeBinding::NodeMethods;
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use dom::bindings::codegen::InheritTypes::{HTMLElementCast, HTMLTitleElementDerived, NodeCast};
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use dom::bindings::codegen::InheritTypes::{CharacterDataCast, TextCast};
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use dom::bindings::js::Root;
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use dom::characterdata::CharacterDataHelpers;
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use dom::document::{Document, DocumentHelpers};
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use dom::eventtarget::{EventTarget, EventTargetTypeId};
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use dom::element::ElementTypeId;
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use dom::htmlelement::{HTMLElement, HTMLElementTypeId};
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use dom::node::{ChildrenMutation, Node, NodeHelpers, NodeTypeId};
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use dom::text::Text;
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use dom::virtualmethods::VirtualMethods;
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use util::str::DOMString;
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#[dom_struct]
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pub struct HTMLTitleElement {
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htmlelement: HTMLElement,
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}
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impl HTMLTitleElementDerived for EventTarget {
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fn is_htmltitleelement(&self) -> bool {
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*self.type_id() ==
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EventTargetTypeId::Node(
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NodeTypeId::Element(ElementTypeId::HTMLElement(HTMLElementTypeId::HTMLTitleElement)))
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}
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}
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impl HTMLTitleElement {
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fn new_inherited(localName: DOMString, prefix: Option<DOMString>, document: &Document) -> HTMLTitleElement {
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HTMLTitleElement {
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htmlelement: HTMLElement::new_inherited(HTMLElementTypeId::HTMLTitleElement, localName, prefix, document)
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}
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}
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#[allow(unrooted_must_root)]
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pub fn new(localName: DOMString,
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prefix: Option<DOMString>,
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document: &Document) -> Root<HTMLTitleElement> {
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let element = HTMLTitleElement::new_inherited(localName, prefix, document);
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Node::reflect_node(box element, document, HTMLTitleElementBinding::Wrap)
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}
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}
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impl<'a> HTMLTitleElementMethods for &'a HTMLTitleElement {
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// https://www.whatwg.org/html/#dom-title-text
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fn Text(self) -> DOMString {
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let node = NodeCast::from_ref(self);
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let mut content = String::new();
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for child in node.children() {
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let text: Option<&Text> = TextCast::to_ref(child.r());
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match text {
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Some(text) => content.push_str(&CharacterDataCast::from_ref(text).data()),
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None => (),
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}
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}
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content
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}
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// https://www.whatwg.org/html/#dom-title-text
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fn SetText(self, value: DOMString) {
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let node = NodeCast::from_ref(self);
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node.SetTextContent(Some(value))
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}
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}
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impl<'a> VirtualMethods for &'a HTMLTitleElement {
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fn super_type<'b>(&'b self) -> Option<&'b VirtualMethods> {
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let htmlelement: &&HTMLElement = HTMLElementCast::from_borrowed_ref(self);
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Some(htmlelement as &VirtualMethods)
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}
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fn children_changed(&self, mutation: &ChildrenMutation) {
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if let Some(ref s) = self.super_type() {
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s.children_changed(mutation);
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}
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let node = NodeCast::from_ref(*self);
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if node.is_in_doc() {
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node.owner_doc().title_changed();
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}
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}
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fn bind_to_tree(&self, is_in_doc: bool) {
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let node = NodeCast::from_ref(*self);
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if is_in_doc {
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let document = node.owner_doc();
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document.r().title_changed();
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}
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}
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}
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