Refactor the favicon loader out of gtk/options/general_page_gtk to gtk/list_store_favicon_loader,

chrome/browser/gtk/list_store_favicon_loader.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.
+
+#ifndef CHROME_BROWSER_GTK_LIST_STORE_FAVICON_LOADER_H_
+#define CHROME_BROWSER_GTK_LIST_STORE_FAVICON_LOADER_H_
+
+#include <gtk/gtk.h>
+
+#include "chrome/browser/history/history.h"
+#include "googleurl/src/gurl.h"
+
+class Profile;
+
+// Handles loading favicons into a GDK_TYPE_PIXBUF column of a GtkListStore.
+// The GtkListStore must also have a G_TYPE_INT column, passed as
+// |favicon_handle_col|, which will be used internally by the loader.
+// Note: this implementation will be inefficient if the GtkListStore has a large
+// number of rows.
+class ListStoreFavIconLoader {
+ public:
+  ListStoreFavIconLoader(GtkListStore* list_store,
+                         gint favicon_col,
+                         gint favicon_handle_col,
+                         Profile* profile,
+                         CancelableRequestConsumer* consumer);
+
+  // Start loading the favicon for |url| into the row |iter|.
+  void LoadFaviconForRow(const GURL& url, GtkTreeIter* iter);
+
+ private:
+  // Find a row from the GetFavIconForURL handle.  Returns true if the row was
+  // found.
+  bool GetRowByFavIconHandle(HistoryService::Handle handle,
+                             GtkTreeIter* result_iter);
+
+  // Callback from HistoryService:::GetFavIconForURL
+  void OnGotFavIcon(HistoryService::Handle handle, bool know_fav_icon,
+                    scoped_refptr<RefCountedBytes> image_data, bool is_expired,
+                    GURL icon_url);
+
+  // The list store we are loading favicons into.
+  GtkListStore* list_store_;
+
+  // The index of the GDK_TYPE_PIXBUF column to receive the favicons.
+  gint favicon_col_;
+
+  // The index of the G_TYPE_INT column used internally to track the
+  // HistoryService::Handle of each favicon request.
+  gint favicon_handle_col_;
+
+  // The profile from which we will get the HistoryService.
+  Profile* profile_;
+
+  // Used in loading favicons.
+  CancelableRequestConsumer* consumer_;
+
+  // Default icon to show when one can't be found for the URL.  This is owned by
+  // the ResourceBundle and we do not need to free it.
+  GdkPixbuf* default_favicon_;
+
+  DISALLOW_COPY_AND_ASSIGN(ListStoreFavIconLoader);
+};
+
+#endif  // CHROME_BROWSER_GTK_LIST_STORE_FAVICON_LOADER_H_