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      1 /*
      2  * Copyright (C) 2009 Google Inc. All rights reserved.
      3  *
      4  * Redistribution and use in source and binary forms, with or without
      5  * modification, are permitted provided that the following conditions are
      6  * met:
      7  *
      8  *     * Redistributions of source code must retain the above copyright
      9  * notice, this list of conditions and the following disclaimer.
     10  *     * Redistributions in binary form must reproduce the above
     11  * copyright notice, this list of conditions and the following disclaimer
     12  * in the documentation and/or other materials provided with the
     13  * distribution.
     14  *     * Neither the name of Google Inc. nor the names of its
     15  * contributors may be used to endorse or promote products derived from
     16  * this software without specific prior written permission.
     17  *
     18  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
     19  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
     20  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
     21  * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
     22  * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
     23  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
     24  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
     25  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
     26  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
     27  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
     28  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     29  */
     30 
     31 #include "config.h"
     32 #include "modules/webdatabase/SQLTransactionClient.h"
     33 
     34 #include "core/dom/ScriptExecutionContext.h"
     35 #include "modules/webdatabase/DatabaseBackendBase.h"
     36 #include "modules/webdatabase/DatabaseBackendContext.h"
     37 #include "modules/webdatabase/DatabaseObserver.h"
     38 
     39 namespace WebCore {
     40 
     41 class NotifyDatabaseChangedTask : public ScriptExecutionContext::Task {
     42 public:
     43     static PassOwnPtr<NotifyDatabaseChangedTask> create(DatabaseBackendBase *database)
     44     {
     45         return adoptPtr(new NotifyDatabaseChangedTask(database));
     46     }
     47 
     48     virtual void performTask(ScriptExecutionContext*)
     49     {
     50         WebCore::DatabaseObserver::databaseModified(m_database.get());
     51     }
     52 
     53 private:
     54     NotifyDatabaseChangedTask(PassRefPtr<DatabaseBackendBase> database)
     55         : m_database(database)
     56     {
     57     }
     58 
     59     RefPtr<DatabaseBackendBase> m_database;
     60 };
     61 
     62 void SQLTransactionClient::didCommitWriteTransaction(DatabaseBackendBase* database)
     63 {
     64     ScriptExecutionContext* scriptExecutionContext = database->databaseContext()->scriptExecutionContext();
     65     if (!scriptExecutionContext->isContextThread()) {
     66         scriptExecutionContext->postTask(NotifyDatabaseChangedTask::create(database));
     67         return;
     68     }
     69 
     70     WebCore::DatabaseObserver::databaseModified(database);
     71 }
     72 
     73 bool SQLTransactionClient::didExceedQuota(DatabaseBackendBase* database)
     74 {
     75     // Chromium does not allow users to manually change the quota for an origin (for now, at least).
     76     // Don't do anything.
     77     ASSERT(database->databaseContext()->scriptExecutionContext()->isContextThread());
     78     return false;
     79 }
     80 
     81 }
     82