1 files changed, 103 insertions, 0 deletions
diff --git a/Source/WebInspectorUI/UserInterface/NavigationItem.js b/Source/WebInspectorUI/UserInterface/NavigationItem.js
new file mode 100644
index 000000000..fef3e3a3f
--- /dev/null
+++ b/Source/WebInspectorUI/UserInterface/NavigationItem.js
@@ -0,0 +1,103 @@
+/*
+ * Copyright (C) 2013 Apple Inc. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS''
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
+ * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS
+ * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
+ * THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+WebInspector.NavigationItem = function(identifier, role, label) {
+    WebInspector.Object.call(this);
+
+    this._identifier = identifier || null;
+
+    this._element = document.createElement("div");
+    
+    if (role) 
+        this._element.setAttribute("role", role);
+    if (label)
+        this._element.setAttribute("aria-label", label);
+
+    var classNames = this._classNames;
+    for (var i = 0; i < classNames.length; ++i)
+        this._element.classList.add(classNames[i]);
+
+    this._element.navigationItem = this;
+};
+
+WebInspector.NavigationItem.StyleClassName = "item";
+WebInspector.NavigationItem.HiddenStyleClassName = "hidden";
+
+
+WebInspector.NavigationItem.prototype = {
+    constructor: WebInspector.NavigationItem,
+
+    // Public
+
+    get identifier()
+    {
+        return this._identifier;
+    },
+
+    get element()
+    {
+        return this._element;
+    },
+
+    get parentNavigationBar()
+    {
+        return this._parentNavigationBar;
+    },
+
+    updateLayout: function(expandOnly)
+    {
+        // Implemented by subclasses.
+    },
+
+    get hidden()
+    {
+        return this._element.classList.contains(WebInspector.NavigationItem.HiddenStyleClassName);
+    },
+
+    set hidden(flag)
+    {
+        if (flag)
+            this._element.classList.add(WebInspector.NavigationItem.HiddenStyleClassName);
+        else
+            this._element.classList.remove(WebInspector.NavigationItem.HiddenStyleClassName);
+
+        if (this._parentNavigationBar)
+            this._parentNavigationBar.updateLayoutSoon();
+    },
+
+    // Private
+
+    get _classNames()
+    {
+        var classNames = [WebInspector.NavigationItem.StyleClassName];
+        if (this._identifier)
+            classNames.push(this._identifier);
+        if (this._additionalClassNames instanceof Array)
+            classNames = classNames.concat(this._additionalClassNames);
+        return classNames;
+    }
+}
+
+WebInspector.NavigationItem.prototype.__proto__ = WebInspector.Object.prototype;