Make tooltips work correctly, allowing for multiple tooltips w/out the mouse ...

chrome/browser/renderer_host/render_widget_host_view_mac.h

 // Copyright (c) 2006-2008 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_RENDERER_HOST_RENDER_WIDGET_HOST_VIEW_MAC_H_
 #define CHROME_BROWSER_RENDERER_HOST_RENDER_WIDGET_HOST_VIEW_MAC_H_
 
 #import <Cocoa/Cocoa.h>
 
+#include "base/scoped_nsobject.h"
 #include "base/task.h"
 #include "base/time.h"
 #include "chrome/browser/cocoa/base_view.h"
 #include "chrome/browser/renderer_host/render_widget_host_view.h"
 #include "webkit/glue/webcursor.h"
 
 class RenderWidgetHostViewMac;
+@class ToolTip;
 
 // This is the view that lives in the Cocoa view hierarchy. In Windows-land,
 // RenderWidgetHostViewWin is both the view and the delegate. We split the roles
 // but that means that the view needs to own the delegate and will dispose of it
 // when it's removed from the view system.
 
 @interface RenderWidgetHostViewCocoa : BaseView {
  @private
   RenderWidgetHostViewMac* renderWidgetHostView_;
   BOOL canBeKeyView_;
@@ skipping 99 matching lines @@
 
   // Indicates if the page is loading.
   bool is_loading_;
 
   // true if the View is not visible.
   bool is_hidden_;
 
   // Tooltips
   // The text to be shown in the tooltip, supplied by the renderer.
   std::wstring tooltip_text_;
+  // Used to display tooltips. We can't use the [NSView -setToolTip:] methods
+  // because we need to be able to show and hide the tooltip without the mouse
+  // leaving the view and NSView isn't set up for that to happen.

[stuartmorgan, 2009/06/15 16:52:26]

s/the view/a region/ to make it more clear why we aren't using  addToolTipRect:?

+  scoped_nsobject<ToolTip> tooltip_;
 
   // Factory used to safely scope delayed calls to ShutdownHost().
   ScopedRunnableMethodFactory<RenderWidgetHostViewMac> shutdown_factory_;
 
   // Used for positioning a popup menu.
   BaseView* parent_view_;
 
   DISALLOW_COPY_AND_ASSIGN(RenderWidgetHostViewMac);
 };
 
 #endif  // CHROME_BROWSER_RENDERER_HOST_RENDER_WIDGET_HOST_VIEW_MAC_H_