Auto merge of #13589 - splav:SVGElement#12974, r=pcwalton,Ms2ger

Support SVG element

<!-- Please describe your changes on the following line: -->
minimal SVG element implementation
---
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- [X] `./mach build -d` does not report any errors
- [X] `./mach test-tidy` does not report any errors
- [X] These changes fix #12974 (github issue number if applicable).

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- [x] There are tests for these changes OR
- [ ] These changes do not require tests because _____

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1 files changed, 48 insertions, 0 deletions

diff --git a/components/script/dom/svgelement.rs b/components/script/dom/svgelement.rs
new file mode 100644
index 00000000000..95fd42c40b6
--- /dev/null
+++ b/components/script/dom/svgelement.rs
@@ -0,0 +1,48 @@
+/* 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::SVGElementBinding;
+use dom::bindings::inheritance::Castable;
+use dom::bindings::js::Root;
+use dom::bindings::str::DOMString;
+use dom::document::Document;
+use dom::element::Element;
+use dom::node::Node;
+use dom::virtualmethods::VirtualMethods;
+use string_cache::Atom;
+use style::element_state::ElementState;
+
+#[dom_struct]
+pub struct SVGElement {
+    element: Element,
+}
+
+impl SVGElement {
+    pub fn new_inherited(tag_name: Atom, prefix: Option<DOMString>,
+                         document: &Document) -> SVGElement {
+        SVGElement::new_inherited_with_state(ElementState::empty(), tag_name, prefix, document)
+    }
+
+    pub fn new_inherited_with_state(state: ElementState, tag_name: Atom,
+                                    prefix: Option<DOMString>, document: &Document)
+                                    -> SVGElement {
+        SVGElement {
+            element:
+                Element::new_inherited_with_state(state, tag_name, ns!(svg), prefix, document),
+        }
+    }
+
+    #[allow(unrooted_must_root)]
+    pub fn new(local_name: Atom, prefix: Option<DOMString>, document: &Document) -> Root<SVGElement> {
+        Node::reflect_node(box SVGElement::new_inherited(local_name, prefix, document),
+                           document,
+                           SVGElementBinding::Wrap)
+    }
+}
+
+impl VirtualMethods for SVGElement {
+    fn super_type(&self) -> Option<&VirtualMethods> {
+        Some(self.upcast::<Element>() as &VirtualMethods)
+    }
+}