1 files changed, 48 insertions, 0 deletions
diff --git a/dom/svg/SVGFragmentIdentifier.h b/dom/svg/SVGFragmentIdentifier.h
new file mode 100644
index 0000000000..464412d1ed
--- /dev/null
+++ b/dom/svg/SVGFragmentIdentifier.h
@@ -0,0 +1,48 @@
+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set ts=8 sts=2 et sw=2 tw=80: */
+/* 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/. */
+
+#ifndef DOM_SVG_SVGFRAGMENTIDENTIFIER_H_
+#define DOM_SVG_SVGFRAGMENTIDENTIFIER_H_
+
+#include "nsString.h"
+
+namespace mozilla {
+
+namespace dom {
+class Document;
+class SVGSVGElement;
+}  // namespace dom
+
+/**
+ * Implements support for parsing SVG fragment identifiers
+ * http://www.w3.org/TR/SVG/linking.html#SVGFragmentIdentifiers
+ */
+class SVGFragmentIdentifier {
+  // To prevent the class being instantiated
+  SVGFragmentIdentifier() = delete;
+
+ public:
+  /**
+   * Process the SVG fragment identifier, if there is one.
+   * @return true if we found a valid svgView()-style fragment identifier,
+   * in which case further processing by the caller can stop. Otherwise return
+   * false as we may have an ordinary anchor which needs to be :target matched.
+   */
+  static bool ProcessFragmentIdentifier(dom::Document* aDocument,
+                                        const nsAString& aAnchorName);
+
+ private:
+  /**
+   * Parse an SVG ViewSpec and set applicable attributes on the root element.
+   * @return true if there is a valid ViewSpec
+   */
+  static bool ProcessSVGViewSpec(const nsAString& aViewSpec,
+                                 dom::SVGSVGElement* root);
+};
+
+}  // namespace mozilla
+
+#endif  // DOM_SVG_SVGFRAGMENTIDENTIFIER_H_