Adds a backend for the bookmarks bar that reads/writes to a JSON

file. These files aren't being built or used yet (though a test case
exists that is ifdef'd out).

BUG=1256202
TEST=none



git-svn-id: svn://svn.chromium.org/chrome/trunk/src@248 0039d316-1c4b-4281-b951-d872f2087c98

1 files changed, 95 insertions, 0 deletions

diff --git a/chrome/browser/bookmark_storage.h b/chrome/browser/bookmark_storage.h
new file mode 100644
index 0000000..8ba00d0
--- /dev/null
+++ b/chrome/browser/bookmark_storage.h
@@ -0,0 +1,95 @@
+// Copyright 2008, Google Inc.
+// All rights reserved.
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+//
+//    * Redistributions of source code must retain the above copyright
+// notice, this list of conditions and the following disclaimer.
+//    * Redistributions in binary form must reproduce the above
+// copyright notice, this list of conditions and the following disclaimer
+// in the documentation and/or other materials provided with the
+// distribution.
+//    * Neither the name of Google Inc. nor the names of its
+// contributors may be used to endorse or promote products derived from
+// this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+// BookmarkService handles reading/write the bookmark bar model. The
+// BookmarkBarModel uses the BookmarkService to load bookmarks from
+// disk, as well as notifying the BookmarkService every time the model
+// changes.
+//
+// Internally BookmarkService uses BookmarkCoded to do the actual read/write.
+
+// NOTE: This class is currently unsed. The plan is to move bookmarks
+// out of the history db using this class and BookmarksCodec instead
+// (bug 1256202).
+
+#ifndef CHROME_BROWSER_BOOKMARK_STORAGE_H_
+#define CHROME_BROWSER_BOOKMARK_STORAGE_H_
+
+#include "base/ref_counted.h"
+#include "base/task.h"
+#include "chrome/browser/browser_process.h"
+
+class BookmarkBarModel;
+class Profile;
+class Value;
+
+namespace {
+class BookmarkStorageBackend;
+}
+
+class BookmarkStorage : public base::RefCountedThreadSafe<BookmarkStorage> {
+  friend class BookmarkStorageBackend;
+
+ public:
+  // Creates a BookmarkStorage for the specified model
+  BookmarkStorage(Profile* profile, BookmarkBarModel* model);
+
+  // Loads the bookmarks into the model, notifying the model when done.
+  void LoadBookmarks();
+
+  // Schedules saving the bookmark bar model to disk.
+  void ScheduleSave();
+
+  // Notification the bookmark bar model is going to be deleted. If there is
+  // a pending save, it is saved immediately.
+  void BookmarkModelDeleted();
+
+ private:
+  // Callback from backend with the results of the bookmark file.
+  void LoadedBookmarks(Value* root_value);
+
+  // Schedules a save on the backend thread.
+  void SaveNow();
+
+  // Returns the thread the backend is run on.
+  Thread* backend_thread() { return g_browser_process->file_thread(); }
+
+  // The model. The model is NULL once BookmarkModelDeleted has been invoked.
+  BookmarkBarModel* model_;
+
+  // Used to delay saves.
+  ScopedRunnableMethodFactory<BookmarkStorage> save_factory_;
+
+  // The backend handles actual reading/writing to disk.
+  scoped_refptr<BookmarkStorageBackend> backend_;
+
+  DISALLOW_COPY_AND_ASSIGN(BookmarkStorage);
+};
+
+#endif  // CHROME_BROWSER_BOOKMARK_STORAGE_H_