script/dom/
svgimageelement.rs

1/* This Source Code Form is subject to the terms of the Mozilla Public
2 * License, v. 2.0. If a copy of the MPL was not distributed with this
3 * file, You can obtain one at https://mozilla.org/MPL/2.0/. */
4
5use dom_struct::dom_struct;
6use html5ever::{LocalName, Prefix, local_name, ns};
7use js::rust::HandleObject;
8use style::attr::AttrValue;
9
10use crate::dom::attr::Attr;
11use crate::dom::bindings::inheritance::Castable;
12use crate::dom::bindings::root::DomRoot;
13use crate::dom::bindings::str::DOMString;
14use crate::dom::document::Document;
15use crate::dom::element::AttributeMutation;
16use crate::dom::node::{Node, NodeTraits};
17use crate::dom::svggraphicselement::SVGGraphicsElement;
18use crate::dom::virtualmethods::VirtualMethods;
19use crate::script_runtime::CanGc;
20
21/// <https://svgwg.org/svg2-draft/embedded.html#Placement>
22const DEFAULT_WIDTH: u32 = 300;
23const DEFAULT_HEIGHT: u32 = 150;
24
25#[dom_struct]
26pub(crate) struct SVGImageElement {
27    svggraphicselement: SVGGraphicsElement,
28}
29
30impl SVGImageElement {
31    fn new_inherited(
32        local_name: LocalName,
33        prefix: Option<Prefix>,
34        document: &Document,
35    ) -> SVGImageElement {
36        SVGImageElement {
37            svggraphicselement: SVGGraphicsElement::new_inherited(local_name, prefix, document),
38        }
39    }
40
41    #[cfg_attr(crown, allow(crown::unrooted_must_root))]
42    pub(crate) fn new(
43        local_name: LocalName,
44        prefix: Option<Prefix>,
45        document: &Document,
46        proto: Option<HandleObject>,
47        can_gc: CanGc,
48    ) -> DomRoot<SVGImageElement> {
49        Node::reflect_node_with_proto(
50            Box::new(SVGImageElement::new_inherited(local_name, prefix, document)),
51            document,
52            proto,
53            can_gc,
54        )
55    }
56
57    /// <https://svgwg.org/svg2-draft/linking.html#processingURL>
58    fn fetch_image_resource(&self) {
59        // TODO: Process and fetch the image resource (as HTMLImageElement).
60        // Reject any resource fetching request immediately.
61        self.owner_global()
62            .task_manager()
63            .dom_manipulation_task_source()
64            .queue_simple_event(self.upcast(), atom!("error"));
65    }
66}
67
68impl VirtualMethods for SVGImageElement {
69    fn super_type(&self) -> Option<&dyn VirtualMethods> {
70        Some(self.upcast::<SVGGraphicsElement>() as &dyn VirtualMethods)
71    }
72
73    fn attribute_mutated(&self, attr: &Attr, mutation: AttributeMutation, can_gc: CanGc) {
74        self.super_type()
75            .unwrap()
76            .attribute_mutated(attr, mutation, can_gc);
77        if attr.local_name() == &local_name!("href") &&
78            matches!(attr.namespace(), &ns!() | &ns!(xlink))
79        {
80            if let AttributeMutation::Set(_) = mutation {
81                self.fetch_image_resource();
82            }
83        }
84    }
85
86    fn parse_plain_attribute(&self, name: &LocalName, value: DOMString) -> AttrValue {
87        match *name {
88            local_name!("width") => AttrValue::from_u32(value.into(), DEFAULT_WIDTH),
89            local_name!("height") => AttrValue::from_u32(value.into(), DEFAULT_HEIGHT),
90            _ => self
91                .super_type()
92                .unwrap()
93                .parse_plain_attribute(name, value),
94        }
95    }
96}
script/dom/svgimageelement.rs

script/dom/
svgimageelement.rs
