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58e1bd0e57
This replaces before_remove_attr(), after_remove_attr() and after_set_attr(). The virtual method takes the mutated attribute and an AttributeMutation value to disambiguate between "attribute is changed", "attribute is added" and "attribute is removed". In the case of "attribute is changed", the mutation value contains a reference to the old value of the mutated attribute, which is used to unregister outdated named elements when the "id" attribute is changed on an element. This greatly simplifies the handling of attributes, which in many cases don't have any specific behaviour whether they are removed or changed or added. It also fixes a few bugs where things were put in before_remove_attr() instead of after_remove_attr() (e.g. when removing an href attribute from a base element). A few helper functions in Element were also renamed and made private.
75 lines
2.8 KiB
Rust
75 lines
2.8 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::attr::Attr;
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use dom::bindings::codegen::Bindings::HTMLTableSectionElementBinding;
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use dom::bindings::codegen::InheritTypes::{HTMLElementCast, HTMLTableSectionElementDerived};
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use dom::bindings::js::Root;
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use dom::document::Document;
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use dom::element::{AttributeMutation, ElementTypeId};
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use dom::eventtarget::{EventTarget, EventTargetTypeId};
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use dom::htmlelement::{HTMLElement, HTMLElementTypeId};
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use dom::node::{Node, NodeTypeId};
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use dom::virtualmethods::VirtualMethods;
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use cssparser::RGBA;
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use std::cell::Cell;
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use util::str::{self, DOMString};
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#[dom_struct]
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pub struct HTMLTableSectionElement {
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htmlelement: HTMLElement,
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background_color: Cell<Option<RGBA>>,
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}
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impl HTMLTableSectionElementDerived for EventTarget {
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fn is_htmltablesectionelement(&self) -> bool {
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*self.type_id() ==
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EventTargetTypeId::Node(
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NodeTypeId::Element(ElementTypeId::HTMLElement(HTMLElementTypeId::HTMLTableSectionElement)))
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}
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}
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impl HTMLTableSectionElement {
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fn new_inherited(localName: DOMString, prefix: Option<DOMString>, document: &Document)
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-> HTMLTableSectionElement {
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HTMLTableSectionElement {
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htmlelement: HTMLElement::new_inherited(HTMLElementTypeId::HTMLTableSectionElement,
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localName,
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prefix,
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document),
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background_color: Cell::new(None),
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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, prefix: Option<DOMString>, document: &Document)
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-> Root<HTMLTableSectionElement> {
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let element = HTMLTableSectionElement::new_inherited(localName, prefix, document);
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Node::reflect_node(box element, document, HTMLTableSectionElementBinding::Wrap)
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}
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pub fn get_background_color(&self) -> Option<RGBA> {
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self.background_color.get()
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}
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}
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impl VirtualMethods for HTMLTableSectionElement {
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fn super_type<'b>(&'b self) -> Option<&'b VirtualMethods> {
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let htmlelement: &HTMLElement = HTMLElementCast::from_ref(self);
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Some(htmlelement as &VirtualMethods)
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}
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fn attribute_mutated(&self, attr: &Attr, mutation: AttributeMutation) {
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self.super_type().unwrap().attribute_mutated(attr, mutation);
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match attr.local_name() {
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&atom!(bgcolor) => {
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self.background_color.set(mutation.new_value(attr).and_then(|value| {
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str::parse_legacy_color(&value).ok()
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}));
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},
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_ => {},
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}
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}
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}
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