1 files changed, 96 insertions, 0 deletions
diff --git a/components/script/dom/svgimageelement.rs b/components/script/dom/svgimageelement.rs
new file mode 100644
index 00000000000..17a5a9149d8
--- /dev/null
+++ b/components/script/dom/svgimageelement.rs
@@ -0,0 +1,96 @@
+/* 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 https://mozilla.org/MPL/2.0/. */
+
+use dom_struct::dom_struct;
+use html5ever::{LocalName, Prefix, local_name, ns};
+use js::rust::HandleObject;
+use style::attr::AttrValue;
+
+use crate::dom::attr::Attr;
+use crate::dom::bindings::inheritance::Castable;
+use crate::dom::bindings::root::DomRoot;
+use crate::dom::bindings::str::DOMString;
+use crate::dom::document::Document;
+use crate::dom::element::AttributeMutation;
+use crate::dom::node::{Node, NodeTraits};
+use crate::dom::svggraphicselement::SVGGraphicsElement;
+use crate::dom::virtualmethods::VirtualMethods;
+use crate::script_runtime::CanGc;
+
+/// <https://svgwg.org/svg2-draft/embedded.html#Placement>
+const DEFAULT_WIDTH: u32 = 300;
+const DEFAULT_HEIGHT: u32 = 150;
+
+#[dom_struct]
+pub(crate) struct SVGImageElement {
+    svggraphicselement: SVGGraphicsElement,
+}
+
+impl SVGImageElement {
+    fn new_inherited(
+        local_name: LocalName,
+        prefix: Option<Prefix>,
+        document: &Document,
+    ) -> SVGImageElement {
+        SVGImageElement {
+            svggraphicselement: SVGGraphicsElement::new_inherited(local_name, prefix, document),
+        }
+    }
+
+    #[cfg_attr(crown, allow(crown::unrooted_must_root))]
+    pub(crate) fn new(
+        local_name: LocalName,
+        prefix: Option<Prefix>,
+        document: &Document,
+        proto: Option<HandleObject>,
+        can_gc: CanGc,
+    ) -> DomRoot<SVGImageElement> {
+        Node::reflect_node_with_proto(
+            Box::new(SVGImageElement::new_inherited(local_name, prefix, document)),
+            document,
+            proto,
+            can_gc,
+        )
+    }
+
+    /// <https://svgwg.org/svg2-draft/linking.html#processingURL>
+    fn fetch_image_resource(&self) {
+        // TODO: Process and fetch the image resource (as HTMLImageElement).
+        // Reject any resource fetching request immediately.
+        self.owner_global()
+            .task_manager()
+            .dom_manipulation_task_source()
+            .queue_simple_event(self.upcast(), atom!("error"));
+    }
+}
+
+impl VirtualMethods for SVGImageElement {
+    fn super_type(&self) -> Option<&dyn VirtualMethods> {
+        Some(self.upcast::<SVGGraphicsElement>() as &dyn VirtualMethods)
+    }
+
+    fn attribute_mutated(&self, attr: &Attr, mutation: AttributeMutation, can_gc: CanGc) {
+        self.super_type()
+            .unwrap()
+            .attribute_mutated(attr, mutation, can_gc);
+        if attr.local_name() == &local_name!("href") &&
+            matches!(attr.namespace(), &ns!() | &ns!(xlink))
+        {
+            if let AttributeMutation::Set(_) = mutation {
+                self.fetch_image_resource();
+            }
+        }
+    }
+
+    fn parse_plain_attribute(&self, name: &LocalName, value: DOMString) -> AttrValue {
+        match *name {
+            local_name!("width") => AttrValue::from_u32(value.into(), DEFAULT_WIDTH),
+            local_name!("height") => AttrValue::from_u32(value.into(), DEFAULT_HEIGHT),
+            _ => self
+                .super_type()
+                .unwrap()
+                .parse_plain_attribute(name, value),
+        }
+    }
+}