1 files changed, 150 insertions, 0 deletions
diff --git a/chromium/third_party/WebKit/Source/core/html/imports/LinkImport.cpp b/chromium/third_party/WebKit/Source/core/html/imports/LinkImport.cpp
new file mode 100644
index 00000000000..0f5a9840211
--- /dev/null
+++ b/chromium/third_party/WebKit/Source/core/html/imports/LinkImport.cpp
@@ -0,0 +1,150 @@
+/*
+ * Copyright (C) 2013 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 "core/html/imports/LinkImport.h"
+
+#include "core/dom/Document.h"
+#include "core/fetch/CrossOriginAccessControl.h"
+#include "core/html/HTMLLinkElement.h"
+#include "core/html/imports/HTMLImportChild.h"
+#include "core/html/imports/HTMLImportLoader.h"
+#include "core/html/imports/HTMLImportTreeRoot.h"
+#include "core/html/imports/HTMLImportsController.h"
+
+namespace WebCore {
+
+PassOwnPtrWillBeRawPtr<LinkImport> LinkImport::create(HTMLLinkElement* owner)
+{
+    return adoptPtrWillBeNoop(new LinkImport(owner));
+}
+
+LinkImport::LinkImport(HTMLLinkElement* owner)
+    : LinkResource(owner)
+    , m_child(nullptr)
+{
+}
+
+LinkImport::~LinkImport()
+{
+#if !ENABLE(OILPAN)
+    if (m_child) {
+        m_child->clearClient();
+        m_child = nullptr;
+    }
+#endif
+}
+
+Document* LinkImport::importedDocument() const
+{
+    if (!m_child || !m_owner || !m_owner->inDocument())
+        return 0;
+    if (m_child->loader()->hasError())
+        return 0;
+    return m_child->document();
+}
+
+void LinkImport::process()
+{
+    if (m_child)
+        return;
+    if (!m_owner)
+        return;
+    if (!shouldLoadResource())
+        return;
+
+    if (!m_owner->document().importsController()) {
+        ASSERT(m_owner->document().frame()); // The document should be the master.
+        HTMLImportsController::provideTo(m_owner->document());
+    }
+
+    LinkRequestBuilder builder(m_owner);
+    if (!builder.isValid()) {
+        didFinish();
+        return;
+    }
+
+    HTMLImportsController* controller = m_owner->document().importsController();
+    HTMLImportLoader* loader = m_owner->document().importLoader();
+    HTMLImport* parent = loader ? static_cast<HTMLImport*>(loader->firstImport()) : static_cast<HTMLImport*>(controller->root());
+    m_child = controller->load(parent, this, builder.build(true));
+    if (!m_child) {
+        didFinish();
+        return;
+    }
+}
+
+void LinkImport::didFinish()
+{
+    if (!m_owner || !m_owner->inDocument())
+        return;
+    m_owner->scheduleEvent();
+}
+
+#if !ENABLE(OILPAN)
+void LinkImport::importChildWasDestroyed(HTMLImportChild* child)
+{
+    ASSERT(m_child == child);
+    m_child = nullptr;
+    m_owner = nullptr;
+}
+#endif
+
+bool LinkImport::isSync() const
+{
+    return m_owner && !m_owner->async();
+}
+
+HTMLLinkElement* LinkImport::link()
+{
+    return m_owner;
+}
+
+bool LinkImport::hasLoaded() const
+{
+    // Should never be called after importChildWasDestroyed was called.
+    ASSERT(m_owner);
+    return m_child && m_child->isDone() && !m_child->loader()->hasError();
+}
+
+void LinkImport::ownerInserted()
+{
+    if (m_child)
+        m_child->ownerInserted();
+}
+
+void LinkImport::trace(Visitor* visitor)
+{
+    visitor->trace(m_child);
+    HTMLImportChildClient::trace(visitor);
+    LinkResource::trace(visitor);
+}
+
+} // namespace WebCore