Tracks changes to zoom icon and zoom percentage. Notifies browser window if the icon should be chan…

chrome/browser/ui/zoom/zoom_tab_helper_delegate.h

+// Copyright (c) 2012 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 CHROME_BROWSER_UI_ZOOM_ZOOM_TAB_HELPER_DELEGATE_H_
+#define CHROME_BROWSER_UI_ZOOM_ZOOM_TAB_HELPER_DELEGATE_H_
+#pragma once
+
+#include "chrome/browser/ui/zoom/zoom_tab_helper.h"
+
+class TabContentsWrapper;
+
+// Interface for objects that wish to be notified of changes in ZoomTabHelper.
+class ZoomTabHelperDelegate {

[Ben Goodger (Google), 2012/05/29 18:04:41]

ZoomObserver

[Kyle Horimoto, 2012/05/31 23:13:52]

Done.

+ public:
+  // Notification that the Omnibox zoom icon should change.
+  virtual void ZoomIconStateChanged(TabContentsWrapper *source,

[Ben Goodger (Google), 2012/05/29 18:04:41]

OnZoomIcon..

[Kyle Horimoto, 2012/05/31 23:13:52]

Done.

+                                    ZoomTabHelper::ZoomIconState state,
+                                    int zoomPercent) = 0;
+
+  // Notification that the zoom percentage has changed.
+  virtual void ZoomChanged(TabContentsWrapper *source, int zoomPercent) = 0;

[Ben Goodger (Google), 2012/05/29 18:04:41]

OnZoomChanged...

[Kyle Horimoto, 2012/05/31 23:13:52]

Done.

+ protected:

[tfarina, 2012/05/26 02:15:35]

nit: add a blank line above.

[Kyle Horimoto, 2012/05/31 23:13:52]

Done.

+  virtual ~ZoomTabHelperDelegate();

[tfarina, 2012/05/26 02:15:35]

nit: we implement this virtual dtor inline here, so no need to implement it in
the source file.

[Kyle Horimoto, 2012/05/31 23:13:52]

Done.

+};
+
+#endif  // CHROME_BROWSER_UI_ZOOM_ZOOM_TAB_HELPER_DELEGATE_H_