1 files changed, 256 insertions, 0 deletions
diff --git a/WebKit/chromium/src/ApplicationCacheHost.cpp b/WebKit/chromium/src/ApplicationCacheHost.cpp
new file mode 100644
index 0000000..ef8f860
--- /dev/null
+++ b/WebKit/chromium/src/ApplicationCacheHost.cpp
@@ -0,0 +1,256 @@
+/*
+ * 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 "DocumentLoader.h"
+#include "DOMApplicationCache.h"
+#include "Frame.h"
+#include "Settings.h"
+#include "WebApplicationCacheHost.h"
+#include "WebApplicationCacheHostClient.h"
+#include "WebKit.h"
+#include "WebKitClient.h"
+#include "WebURL.h"
+#include "WebURLError.h"
+#include "WebURLResponse.h"
+#include "WrappedResourceRequest.h"
+#include "WrappedResourceResponse.h"
+
+using namespace WebKit;
+
+namespace WebCore {
+
+// ApplicationCacheHostInternal -----------------------------------------------
+
+class ApplicationCacheHostInternal : public WebApplicationCacheHostClient {
+public:
+    ApplicationCacheHostInternal(ApplicationCacheHost* host)
+        : m_innerHost(host)
+    {
+        m_outerHost.set(WebKit::webKitClient()->createApplicationCacheHost(this));
+    }
+
+    virtual void notifyEventListener(WebApplicationCacheHost::EventID eventID)
+    {
+        m_innerHost->notifyDOMApplicationCache(
+            static_cast<ApplicationCacheHost::EventID>(eventID));
+    }
+
+    ApplicationCacheHost* m_innerHost;
+    OwnPtr<WebApplicationCacheHost> m_outerHost;
+};
+
+// ApplicationCacheHost -------------------------------------------------------
+// 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)
+{
+    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)
+{
+    if (m_domApplicationCache) {
+        ExceptionCode ec = 0;
+        m_domApplicationCache->dispatchEvent(
+            Event::create(DOMApplicationCache::toEventType(id), false, false),
+            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)