Improvements to Linux InfoBubble and BookmarkBubble.

chrome/browser/gtk/bookmark_bubble_gtk.h

 // Copyright (c) 2009 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.
 
+// This is the GTK implementation of the bookmark bubble, the dialog box
+// presented to create or edit a bookmark.  There can only ever be a single
+// bubble open, so the class presents only static methods, and handles the
+// singleton behavior for you.  It also handles the object and widget
+// lifetimes, destroying everything and possibly committing any changes when
+// the bubble is closed.
+
 #ifndef CHROME_BROWSER_GTK_BOOKMARK_BUBBLE_GTK_H_
 #define CHROME_BROWSER_GTK_BOOKMARK_BUBBLE_GTK_H_
 
+#include <gtk/gtk.h>
+
 #include "base/basictypes.h"
+#include "chrome/browser/gtk/info_bubble_gtk.h"
 #include "googleurl/src/gurl.h"
 
-typedef struct _GtkWidget GtkWidget;
-
 class Profile;
 namespace gfx {
 class Rect;
 }
 
-class BookmarkBubbleGtk {
+class BookmarkBubbleGtk : public InfoBubbleGtkDelegate {
  public:
+  // Shows the bookmark bubble, pointing at |rect|.
   static void Show(const gfx::Rect& rect,
                    Profile* profile,
                    const GURL& url,
                    bool newly_bookmarked);
+
+  // Implements the InfoBubbleGtkDelegate.  We are notified when the bubble
+  // is about to be closed, so we have a chance to save any state / input in
+  // our widgets before they are destroyed.
+  virtual void InfoBubbleClosing(InfoBubbleGtk* info_bubble,
+                                 bool closed_by_escape);
+
+ private:
+  BookmarkBubbleGtk(const gfx::Rect& rect,
+                    Profile* profile,
+                    const GURL& url,
+                    bool newly_bookmarked);
+  ~BookmarkBubbleGtk();
+
+  static gboolean HandleDestroyThunk(GtkWidget* widget,
+                                     gpointer userdata) {
+    return reinterpret_cast<BookmarkBubbleGtk*>(userdata)->
+        HandleDestroy();
+  }
+  // Notified when |content_| is destroyed so we can delete our instance.
+  gboolean HandleDestroy();
+  
+  // The URL of the bookmark.
+  GURL url_;
+  // Our current profile (used to access the bookmark system).
+  Profile* profile_;
+  // Whether the bubble is creating or editing an existing bookmark.
+  bool newly_bookmarked_;
+
+  // We let the InfoBubble own our content, and then we delete ourself
+  // when the widget is destroyed (when the InfoBubble is destroyed).
+  GtkWidget* content_;
+
+  // The combo box for selecting the bookmark folder.
+  GtkWidget* combo_;
+
+  DISALLOW_COPY_AND_ASSIGN(BookmarkBubbleGtk);
 };
 
 #endif  // CHROME_BROWSER_GTK_BOOKMARK_BUBBLE_GTK_H_