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/*
* 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 "third_party/blink/renderer/core/html/imports/link_import.h"
#include "services/network/public/mojom/referrer_policy.mojom-shared.h"
#include "third_party/blink/renderer/core/dom/document.h"
#include "third_party/blink/renderer/core/html/html_link_element.h"
#include "third_party/blink/renderer/core/html/imports/html_import_child.h"
#include "third_party/blink/renderer/core/html/imports/html_import_loader.h"
#include "third_party/blink/renderer/core/html/imports/html_import_tree_root.h"
#include "third_party/blink/renderer/core/html/imports/html_imports_controller.h"
#include "third_party/blink/renderer/core/html_names.h"
#include "third_party/blink/renderer/platform/loader/fetch/fetch_parameters.h"
#include "third_party/blink/renderer/platform/loader/fetch/resource_loader_options.h"
#include "third_party/blink/renderer/platform/loader/fetch/resource_request.h"
#include "third_party/blink/renderer/platform/weborigin/kurl.h"
#include "third_party/blink/renderer/platform/weborigin/security_policy.h"
#include "third_party/blink/renderer/platform/wtf/text/atomic_string.h"
namespace blink {
LinkImport* LinkImport::Create(HTMLLinkElement* owner) {
return MakeGarbageCollected<LinkImport>(owner);
}
LinkImport::LinkImport(HTMLLinkElement* owner)
: LinkResource(owner), child_(nullptr) {}
LinkImport::~LinkImport() = default;
Document* LinkImport::ImportedDocument() const {
if (!child_ || !owner_ || !owner_->isConnected())
return nullptr;
if (child_->Loader()->HasError())
return nullptr;
return child_->GetDocument();
}
void LinkImport::Process() {
if (child_)
return;
if (!owner_)
return;
if (!ShouldLoadResource())
return;
const KURL& url = owner_->GetNonEmptyURLAttribute(html_names::kHrefAttr);
if (url.IsEmpty() || !url.IsValid()) {
DidFinish();
return;
}
ResourceRequest resource_request(GetDocument().CompleteURL(url));
network::mojom::ReferrerPolicy referrer_policy = owner_->GetReferrerPolicy();
resource_request.SetReferrerPolicy(referrer_policy);
ResourceLoaderOptions options;
options.initiator_info.name = owner_->localName();
FetchParameters params(resource_request, options);
params.SetCharset(GetCharset());
params.SetContentSecurityPolicyNonce(owner_->nonce());
HTMLImportsController* controller = GetDocument().EnsureImportsController();
child_ = controller->Load(GetDocument(), this, params);
if (!child_) {
DidFinish();
return;
}
}
void LinkImport::DidFinish() {
if (!owner_ || !owner_->isConnected())
return;
owner_->ScheduleEvent();
}
void LinkImport::ImportChildWasDisposed(HTMLImportChild* child) {
DCHECK_EQ(child_, child);
child_ = nullptr;
owner_ = nullptr;
}
bool LinkImport::IsSync() const {
return owner_ && !owner_->Async();
}
HTMLLinkElement* LinkImport::Link() {
return owner_;
}
bool LinkImport::HasLoaded() const {
return owner_ && child_ && child_->HasFinishedLoading() &&
!child_->Loader()->HasError();
}
void LinkImport::OwnerInserted() {
if (child_)
child_->OwnerInserted();
}
void LinkImport::OwnerRemoved() {
if (owner_)
GetDocument().GetStyleEngine().HtmlImportAddedOrRemoved();
}
void LinkImport::Trace(Visitor* visitor) {
visitor->Trace(child_);
HTMLImportChildClient::Trace(visitor);
LinkResource::Trace(visitor);
}
} // namespace blink