[headless] Initial skeleton of headless/public/

headless/public/web_node.h

+// Copyright 2015 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#ifndef HEADLESS_PUBLIC_WEB_NODE_H_
+#define HEADLESS_PUBLIC_WEB_NODE_H_
+
+#include "third_party/WebKit/public/web/WebNode.h"
+
+namespace headless {
+
+class WebElement;
+class WebDocument;
+
+class WebNode {
+ public:
+  WebNode(const blink::WebNode&);
+
+  std::string Value() const;
+
+  WebNode Parent() const;
+  WebNode FirstChild() const;
+  WebNode LastChild() const;
+  WebNode NextSibling() const;
+  WebNode PreviousSibling() const;
+  bool HasChildNodes() const;
+
+  bool IsDocument() const;
+  bool IsElement() const;
+
+  WebElement AsElement() const;
+  WebDocument AsDocument() const;
+
+  inline bool operator==(const WebNode& other) const {
+    return web_node() == other.web_node();
+  }
+  inline bool operator!=(const WebNode& other) const {
+    return !(*this == other);
+  }
+
+ protected:
+  blink::WebNode& web_node();
+  const blink::WebNode& web_node() const;
+
+  blink::WebNode web_node_;
+};
+
+}  // namespace headless
+
+#endif  // HEADLESS_PUBLIC_WEB_NODE_H_