Linux status icon for Ubuntu Unity

ui/linux_ui/status_icon_linux.h

+// Copyright (c) 2013 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 UI_LINUX_UI_STATUS_ICON_LINUX_H_
+#define UI_LINUX_UI_STATUS_ICON_LINUX_H_
+
+#include "base/strings/string16.h"
+
+namespace gfx {
+class ImageSkia;
+}
+
+namespace ui {
+class MenuModel;
+}  // namespace ui
+
+// Since liblinux_ui cannot have dependencies on any chrome browser components
+// we cannot inherit from StatusIcon. So we implement the necessary methods
+// and let a wrapper class implement the StatusIcon interface and defer the
+// callbacks to a delegate.
+class StatusIconLinux {
+ public:
+  class Delegate {
+   public:
+    virtual void OnClick() = 0;
+
+   protected:
+    virtual ~Delegate();
+  };
+
+  StatusIconLinux();
+  virtual ~StatusIconLinux();
+
+  virtual void SetImage(const gfx::ImageSkia& image) = 0;
+  virtual void SetPressedImage(const gfx::ImageSkia& image) = 0;
+  virtual void SetToolTip(const string16& tool_tip) = 0;
+  virtual void SetClickActionLabel(const string16& label) = 0;
+
+  // Invoked after a call to SetContextMenu() to let the platform-specific
+  // subclass update the native context menu based on the new model. The
+  // subclass should destroy the existing native context menu on this call.
+  virtual void UpdatePlatformContextMenu(ui::MenuModel* model) = 0;
+
+  Delegate* delegate() { return delegate_; }
+  void set_delegate(Delegate* delegate) { delegate_ = delegate; }
+
+ private:
+  Delegate* delegate_;
+};
+
+#endif  // UI_LINUX_UI_STATUS_ICON_LINUX_H_