| /* |
| * Copyright (C) 2006, 2007 Apple Inc. All rights reserved. |
| * Copyright (C) 2009 Jan Michael Alonzo |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions |
| * are met: |
| * |
| * 1. Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * 2. 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. |
| * 3. Neither the name of Apple Computer, Inc. ("Apple") 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 APPLE AND ITS 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 APPLE OR ITS 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. |
| */ |
| |
| #include "config.h" |
| #include "DocumentLoaderGtk.h" |
| |
| #include "GRefPtr.h" |
| #include "webkitwebdatasource.h" |
| #include "webkitwebdatasourceprivate.h" |
| |
| using namespace WebCore; |
| |
| namespace WebKit { |
| |
| DocumentLoader::DocumentLoader(const ResourceRequest& request, const SubstituteData& substituteData) |
| : WebCore::DocumentLoader(request, substituteData) |
| , m_isDataSourceReffed(false) |
| , m_dataSource(0) |
| { |
| } |
| |
| void DocumentLoader::setDataSource(WebKitWebDataSource* dataSource) |
| { |
| ASSERT(!m_dataSource); |
| |
| m_dataSource = dataSource; |
| refDataSource(); |
| } |
| |
| void DocumentLoader::detachDataSource() |
| { |
| unrefDataSource(); |
| } |
| |
| void DocumentLoader::attachToFrame() |
| { |
| WebCore::DocumentLoader::attachToFrame(); |
| |
| if (m_dataSource) { |
| refDataSource(); |
| return; |
| } |
| |
| // We may get to here without having a datasource, when the data |
| // is coming from the page cache. |
| GRefPtr<WebKitWebDataSource> dataSource(adoptGRef(kitNew(this))); |
| setDataSource(dataSource.get()); |
| } |
| |
| void DocumentLoader::detachFromFrame() |
| { |
| WebCore::DocumentLoader::detachFromFrame(); |
| |
| if (m_loadingResources.isEmpty()) |
| unrefDataSource(); |
| } |
| |
| void DocumentLoader::increaseLoadCount(unsigned long identifier) |
| { |
| ASSERT(m_dataSource); |
| |
| if (m_loadingResources.contains(identifier)) |
| return; |
| m_loadingResources.add(identifier); |
| refDataSource(); |
| } |
| |
| void DocumentLoader::decreaseLoadCount(unsigned long identifier) |
| { |
| HashSet<unsigned long>::iterator it = m_loadingResources.find(identifier); |
| |
| // It is valid for a load to be cancelled before it's started. |
| if (it == m_loadingResources.end()) |
| return; |
| |
| m_loadingResources.remove(it); |
| |
| if (m_loadingResources.isEmpty() && !frame()) |
| unrefDataSource(); |
| } |
| |
| // helper methos to avoid ref count churn |
| void DocumentLoader::refDataSource() |
| { |
| if (!m_dataSource || m_isDataSourceReffed) |
| return; |
| m_isDataSourceReffed = true; |
| g_object_ref(m_dataSource); |
| } |
| void DocumentLoader::unrefDataSource() |
| { |
| if (!m_isDataSourceReffed) |
| return; |
| ASSERT(m_dataSource); |
| m_isDataSourceReffed = false; |
| g_object_unref(m_dataSource); |
| m_dataSource = 0; |
| } |
| |
| } // end namespace WebKit |