--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/WebKit/chromium/src/ApplicationCacheHost.cpp Fri Sep 17 09:02:29 2010 +0300
@@ -0,0 +1,259 @@
+/*
+ * Copyright (C) 2009 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.
+ */
+
+#include "config.h"
+#include "ApplicationCacheHost.h"
+
+#if ENABLE(OFFLINE_WEB_APPLICATIONS)
+
+#include "ApplicationCacheHostInternal.h"
+#include "DocumentLoader.h"
+#include "DOMApplicationCache.h"
+#include "Frame.h"
+#include "ProgressEvent.h"
+#include "Settings.h"
+#include "WebURL.h"
+#include "WebURLError.h"
+#include "WebURLResponse.h"
+#include "WrappedResourceRequest.h"
+#include "WrappedResourceResponse.h"
+
+using namespace WebKit;
+
+namespace WebCore {
+
+// We provide a custom implementation of this class that calls out to the
+// embedding application instead of using WebCore's built in appcache system.
+// This file replaces webcore/appcache/ApplicationCacheHost.cpp in our build.
+
+ApplicationCacheHost::ApplicationCacheHost(DocumentLoader* documentLoader)
+ : m_domApplicationCache(0)
+ , m_documentLoader(documentLoader)
+ , m_defersEvents(true)
+{
+ ASSERT(m_documentLoader);
+}
+
+ApplicationCacheHost::~ApplicationCacheHost()
+{
+}
+
+void ApplicationCacheHost::maybeLoadMainResource(ResourceRequest& request, SubstituteData&)
+{
+ // We defer creating the outer host object to avoid spurious creation/destruction
+ // around creating empty documents. At this point, we're initiating a main resource
+ // load for the document, so its for real.
+
+ if (!isApplicationCacheEnabled())
+ return;
+
+ m_internal.set(new ApplicationCacheHostInternal(this));
+ if (m_internal->m_outerHost) {
+ WrappedResourceRequest wrapped(request);
+ m_internal->m_outerHost->willStartMainResourceRequest(wrapped);
+ } else
+ m_internal.clear();
+
+ // NOTE: The semantics of this method, and others in this interface, are subtly different
+ // than the method names would suggest. For example, in this method never returns an appcached
+ // response in the SubstituteData out argument, instead we return the appcached response thru
+ // the usual resource loading pipeline.
+}
+
+void ApplicationCacheHost::selectCacheWithoutManifest()
+{
+ if (m_internal)
+ m_internal->m_outerHost->selectCacheWithoutManifest();
+}
+
+void ApplicationCacheHost::selectCacheWithManifest(const KURL& manifestURL)
+{
+ if (m_internal) {
+ if (!m_internal->m_outerHost->selectCacheWithManifest(manifestURL)) {
+ // It's a foreign entry, restart the current navigation from the top
+ // of the navigation algorithm. The navigation will not result in the
+ // same resource being loaded, because "foreign" entries are never picked
+ // during navigation.
+ // see WebCore::ApplicationCacheGroup::selectCache()
+ const KURL& docURL = m_documentLoader->frame()->document()->url();
+ String referrer = m_documentLoader->frameLoader()->referrer();
+ m_documentLoader->frame()->redirectScheduler()->scheduleLocationChange(docURL, referrer);
+ }
+ }
+}
+
+bool ApplicationCacheHost::maybeLoadFallbackForMainResponse(const ResourceRequest&, const ResourceResponse& response)
+{
+ if (m_internal) {
+ WrappedResourceResponse wrapped(response);
+ m_internal->m_outerHost->didReceiveResponseForMainResource(wrapped);
+ }
+ return false;
+}
+
+bool ApplicationCacheHost::maybeLoadFallbackForMainError(const ResourceRequest&, const ResourceError& error)
+{
+ // N/A to the chromium port
+ return false;
+}
+
+void ApplicationCacheHost::mainResourceDataReceived(const char* data, int length, long long, bool)
+{
+ if (m_internal)
+ m_internal->m_outerHost->didReceiveDataForMainResource(data, length);
+}
+
+void ApplicationCacheHost::failedLoadingMainResource()
+{
+ if (m_internal)
+ m_internal->m_outerHost->didFinishLoadingMainResource(false);
+}
+
+void ApplicationCacheHost::finishedLoadingMainResource()
+{
+ if (m_internal)
+ m_internal->m_outerHost->didFinishLoadingMainResource(true);
+}
+
+bool ApplicationCacheHost::maybeLoadResource(ResourceLoader*, ResourceRequest& request, const KURL&)
+{
+ // FIXME: look into the purpose of the unused KURL& originalURL parameter
+ if (m_internal) {
+ WrappedResourceRequest wrapped(request);
+ m_internal->m_outerHost->willStartSubResourceRequest(wrapped);
+ }
+ return false;
+}
+
+bool ApplicationCacheHost::maybeLoadFallbackForRedirect(ResourceLoader*, ResourceRequest&, const ResourceResponse&)
+{
+ // N/A to the chromium port
+ return false;
+}
+
+bool ApplicationCacheHost::maybeLoadFallbackForResponse(ResourceLoader*, const ResourceResponse&)
+{
+ // N/A to the chromium port
+ return false;
+}
+
+bool ApplicationCacheHost::maybeLoadFallbackForError(ResourceLoader*, const ResourceError&)
+{
+ // N/A to the chromium port
+ return false;
+}
+
+bool ApplicationCacheHost::maybeLoadSynchronously(ResourceRequest& request, ResourceError&, ResourceResponse&, Vector<char>&)
+{
+ if (m_internal) {
+ WrappedResourceRequest wrapped(request);
+ m_internal->m_outerHost->willStartSubResourceRequest(wrapped);
+ }
+ return false;
+}
+
+void ApplicationCacheHost::maybeLoadFallbackSynchronously(const ResourceRequest&, ResourceError&, ResourceResponse&, Vector<char>&)
+{
+ // N/A to the chromium port
+}
+
+bool ApplicationCacheHost::canCacheInPageCache() const
+{
+ // N/A to the chromium port which doesn't use the page cache.
+ return false;
+}
+
+void ApplicationCacheHost::setDOMApplicationCache(DOMApplicationCache* domApplicationCache)
+{
+ ASSERT(!m_domApplicationCache || !domApplicationCache);
+ m_domApplicationCache = domApplicationCache;
+}
+
+void ApplicationCacheHost::notifyDOMApplicationCache(EventID id, int total, int done)
+{
+ if (m_defersEvents) {
+ // Event dispatching is deferred until document.onload has fired.
+ m_deferredEvents.append(DeferredEvent(id, total, done));
+ return;
+ }
+ dispatchDOMEvent(id, total, done);
+}
+
+void ApplicationCacheHost::stopDeferringEvents()
+{
+ RefPtr<DocumentLoader> protect(documentLoader());
+ for (unsigned i = 0; i < m_deferredEvents.size(); ++i) {
+ const DeferredEvent& deferred = m_deferredEvents[i];
+ dispatchDOMEvent(deferred.eventID, deferred.progressTotal, deferred.progressDone);
+ }
+ m_deferredEvents.clear();
+ m_defersEvents = false;
+}
+
+void ApplicationCacheHost::dispatchDOMEvent(EventID id, int total, int done)
+{
+ if (m_domApplicationCache) {
+ const AtomicString& eventType = DOMApplicationCache::toEventType(id);
+ ExceptionCode ec = 0;
+ RefPtr<Event> event;
+ if (id == PROGRESS_EVENT)
+ event = ProgressEvent::create(eventType, true, done, total);
+ else
+ event = Event::create(eventType, false, false);
+ m_domApplicationCache->dispatchEvent(event, ec);
+ ASSERT(!ec);
+ }
+}
+
+ApplicationCacheHost::Status ApplicationCacheHost::status() const
+{
+ return m_internal ? static_cast<Status>(m_internal->m_outerHost->status()) : UNCACHED;
+}
+
+bool ApplicationCacheHost::update()
+{
+ return m_internal ? m_internal->m_outerHost->startUpdate() : false;
+}
+
+bool ApplicationCacheHost::swapCache()
+{
+ return m_internal ? m_internal->m_outerHost->swapCache() : false;
+}
+
+bool ApplicationCacheHost::isApplicationCacheEnabled()
+{
+ ASSERT(m_documentLoader->frame());
+ return m_documentLoader->frame()->settings()
+ && m_documentLoader->frame()->settings()->offlineWebApplicationCacheEnabled();
+}
+
+} // namespace WebCore
+
+#endif // ENABLE(OFFLINE_WEB_APPLICATIONS)