IndexedDB: chromium side of IDBCursor.advance().

content/common/indexed_db/indexed_db_dispatcher.cc

 // 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.
 
 #include "content/common/indexed_db/indexed_db_dispatcher.h"
 
 #include "base/lazy_instance.h"
 #include "base/threading/thread_local.h"
 #include "content/common/child_thread.h"
 #include "content/common/indexed_db/indexed_db_messages.h"
@@ skipping 62 matching lines @@
 
 void IndexedDBDispatcher::OnWorkerRunLoopStopped() {
   delete this;
 }
 
 void IndexedDBDispatcher::OnMessageReceived(const IPC::Message& msg) {
   bool handled = true;
   IPC_BEGIN_MESSAGE_MAP(IndexedDBDispatcher, msg)
     IPC_MESSAGE_HANDLER(IndexedDBMsg_CallbacksSuccessIDBCursor,
                         OnSuccessOpenCursor)
+    IPC_MESSAGE_HANDLER(IndexedDBMsg_CallbacksSuccessCursorAdvance,
+                        OnSuccessCursorContinue)
     IPC_MESSAGE_HANDLER(IndexedDBMsg_CallbacksSuccessCursorContinue,
                         OnSuccessCursorContinue)
     IPC_MESSAGE_HANDLER(IndexedDBMsg_CallbacksSuccessCursorPrefetch,
                         OnSuccessCursorPrefetch)
     IPC_MESSAGE_HANDLER(IndexedDBMsg_CallbacksSuccessIDBDatabase,
                         OnSuccessIDBDatabase)
     IPC_MESSAGE_HANDLER(IndexedDBMsg_CallbacksSuccessIndexedDBKey,
                         OnSuccessIndexedDBKey)
     IPC_MESSAGE_HANDLER(IndexedDBMsg_CallbacksSuccessIDBTransaction,
                         OnSuccessIDBTransaction)
@@ skipping 36 matching lines @@
     return;
   }
   int32 response_id = pending_callbacks_.Add(callbacks.release());
   Send(
       new IndexedDBHostMsg_CursorUpdate(idb_cursor_id, CurrentWorkerId(),
                                         response_id, value, ec));
   if (*ec)
     pending_callbacks_.Remove(response_id);
 }
 
+void IndexedDBDispatcher::RequestIDBCursorAdvance(
+    unsigned long count,
+    WebIDBCallbacks* callbacks_ptr,
+    int32 idb_cursor_id,
+    WebExceptionCode* ec) {
+  // Reset all cursor prefetch caches except for this cursor.
+  ResetCursorPrefetchCaches(idb_cursor_id);
+
+  scoped_ptr<WebIDBCallbacks> callbacks(callbacks_ptr);
+
+  int32 response_id = pending_callbacks_.Add(callbacks.release());
+  Send(new IndexedDBHostMsg_CursorAdvance(idb_cursor_id, CurrentWorkerId(),
+                                          response_id, count, ec));
+  if (*ec)
+    pending_callbacks_.Remove(response_id);
+}
+
 void IndexedDBDispatcher::RequestIDBCursorContinue(
     const IndexedDBKey& key,
     WebIDBCallbacks* callbacks_ptr,
     int32 idb_cursor_id,
     WebExceptionCode* ec) {
   // Reset all cursor prefetch caches except for this cursor.
   ResetCursorPrefetchCaches(idb_cursor_id);
 
   scoped_ptr<WebIDBCallbacks> callbacks(callbacks_ptr);
 
@@ skipping 565 matching lines @@
 }
 
 void IndexedDBDispatcher::ResetCursorPrefetchCaches(int32 exception_cursor_id) {
   typedef std::map<int32, RendererWebIDBCursorImpl*>::iterator Iterator;
   for (Iterator i = cursors_.begin(); i != cursors_.end(); ++i) {
     if (i->first == exception_cursor_id)
       continue;
     i->second->ResetPrefetchCache();
   }
 }