| /* |
| * 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/HTMLImportChild.h" |
| |
| #include "core/dom/Document.h" |
| #include "core/dom/custom/CustomElement.h" |
| #include "core/dom/custom/CustomElementMicrotaskImportStep.h" |
| #include "core/html/imports/HTMLImportChildClient.h" |
| #include "core/html/imports/HTMLImportLoader.h" |
| #include "core/html/imports/HTMLImportsController.h" |
| |
| namespace WebCore { |
| |
| HTMLImportChild::HTMLImportChild(Document& master, const KURL& url, SyncMode sync) |
| : HTMLImport(sync) |
| #if ENABLE(OILPAN) |
| , m_master(&master) |
| #else |
| , m_master(master) |
| #endif |
| , m_url(url) |
| , m_customElementMicrotaskStep(0) |
| , m_loader(0) |
| , m_client(0) |
| { |
| #if !ENABLE(OILPAN) |
| m_master.guardRef(); |
| #endif |
| } |
| |
| HTMLImportChild::~HTMLImportChild() |
| { |
| // importDestroyed() should be called before the destruction. |
| ASSERT(!m_loader); |
| |
| if (m_customElementMicrotaskStep) { |
| // if Custom Elements were blocked, must unblock them before death |
| m_customElementMicrotaskStep->importDidFinish(); |
| m_customElementMicrotaskStep = 0; |
| } |
| |
| if (m_client) |
| m_client->importChildWasDestroyed(this); |
| |
| #if !ENABLE(OILPAN) |
| m_master.guardDeref(); |
| #endif |
| } |
| |
| void HTMLImportChild::wasAlreadyLoaded() |
| { |
| ASSERT(!m_loader); |
| ASSERT(m_client); |
| ensureLoader(); |
| stateWillChange(); |
| } |
| |
| void HTMLImportChild::startLoading(const ResourcePtr<RawResource>& resource) |
| { |
| ASSERT(!this->resource()); |
| ASSERT(!m_loader); |
| |
| setResource(resource); |
| |
| ensureLoader(); |
| } |
| |
| void HTMLImportChild::didFinish() |
| { |
| if (m_client) |
| m_client->didFinish(); |
| |
| if (m_customElementMicrotaskStep) { |
| m_customElementMicrotaskStep->importDidFinish(); |
| m_customElementMicrotaskStep = 0; |
| } |
| } |
| |
| void HTMLImportChild::didFinishLoading() |
| { |
| clearResource(); |
| stateWillChange(); |
| } |
| |
| Document* HTMLImportChild::importedDocument() const |
| { |
| if (!m_loader) |
| return 0; |
| return m_loader->importedDocument(); |
| } |
| |
| void HTMLImportChild::importDestroyed() |
| { |
| if (parent()) |
| parent()->removeChild(this); |
| if (m_loader) { |
| m_loader->removeImport(this); |
| m_loader = 0; |
| } |
| } |
| |
| Document* HTMLImportChild::document() const |
| { |
| return m_loader ? m_loader->document() : 0; |
| } |
| |
| void HTMLImportChild::stateWillChange() |
| { |
| toHTMLImportsController(root())->scheduleRecalcState(); |
| } |
| |
| void HTMLImportChild::stateDidChange() |
| { |
| HTMLImport::stateDidChange(); |
| |
| ensureLoader(); |
| if (state().isReady()) |
| didFinish(); |
| } |
| |
| void HTMLImportChild::ensureLoader() |
| { |
| if (m_loader) |
| return; |
| |
| if (HTMLImportChild* found = toHTMLImportsController(root())->findLinkFor(m_url, this)) |
| shareLoader(found); |
| else |
| createLoader(); |
| |
| if (isSync() && !isDone()) { |
| ASSERT(!m_customElementMicrotaskStep); |
| m_customElementMicrotaskStep = CustomElement::didCreateImport(this); |
| } |
| } |
| |
| void HTMLImportChild::createLoader() |
| { |
| ASSERT(!m_loader); |
| m_loader = toHTMLImportsController(root())->createLoader(); |
| m_loader->addImport(this); |
| m_loader->startLoading(resource()); |
| } |
| |
| void HTMLImportChild::shareLoader(HTMLImportChild* loader) |
| { |
| ASSERT(!m_loader); |
| m_loader = loader->m_loader; |
| m_loader->addImport(this); |
| stateWillChange(); |
| } |
| |
| bool HTMLImportChild::isDone() const |
| { |
| return m_loader && m_loader->isDone(); |
| } |
| |
| bool HTMLImportChild::loaderHasError() const |
| { |
| return m_loader && m_loader->hasError(); |
| } |
| |
| |
| void HTMLImportChild::setClient(HTMLImportChildClient* client) |
| { |
| ASSERT(client); |
| ASSERT(!m_client); |
| m_client = client; |
| } |
| |
| void HTMLImportChild::clearClient() |
| { |
| // Doesn't check m_client nullity because we allow |
| // clearClient() to reenter. |
| m_client = 0; |
| } |
| |
| HTMLLinkElement* HTMLImportChild::link() const |
| { |
| if (!m_client) |
| return 0; |
| return m_client->link(); |
| } |
| |
| #if !defined(NDEBUG) |
| void HTMLImportChild::showThis() |
| { |
| HTMLImport::showThis(); |
| fprintf(stderr, " loader=%p sync=%s url=%s", |
| m_loader, |
| isSync() ? "Y" : "N", |
| url().string().utf8().data()); |
| } |
| #endif |
| |
| } // namespace WebCore |