| /* |
| * 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/HTMLImport.h" |
| |
| #include "core/dom/Document.h" |
| |
| namespace WebCore { |
| |
| Frame* HTMLImport::frame() |
| { |
| return master()->frame(); |
| } |
| |
| Document* HTMLImport::master() |
| { |
| return root()->document(); |
| } |
| |
| HTMLImportsController* HTMLImport::controller() |
| { |
| return root()->toController(); |
| } |
| |
| void HTMLImport::appendChild(HTMLImport* child) |
| { |
| ASSERT(child->parent() == this); |
| ASSERT(!child->hasChildren()); |
| |
| if (isBlocked()) |
| child->block(); |
| m_children.append(child); |
| blockAfter(child); |
| } |
| |
| bool HTMLImport::areChilrenLoaded() const |
| { |
| for (size_t i = 0; i < m_children.size(); ++i) { |
| if (!m_children[i]->isLoaded()) |
| return false; |
| } |
| |
| return true; |
| } |
| |
| bool HTMLImport::arePredecessorsLoaded() const |
| { |
| HTMLImport* parent = this->parent(); |
| if (!parent) |
| return true; |
| |
| for (size_t i = 0; i < parent->m_children.size(); ++i) { |
| HTMLImport* sibling = parent->m_children[i]; |
| if (sibling == this) |
| break; |
| if (!sibling->isLoaded()) |
| return false; |
| } |
| |
| return true; |
| } |
| |
| void HTMLImport::block() |
| { |
| m_blocked = true; |
| } |
| |
| void HTMLImport::unblock() |
| { |
| bool wasBlocked = m_blocked; |
| m_blocked = false; |
| if (wasBlocked) |
| didUnblock(); |
| } |
| |
| void HTMLImport::didUnblock() |
| { |
| ASSERT(!isBlocked()); |
| if (!isProcessing()) |
| return; |
| |
| if (Document* document = this->document()) |
| document->didLoadAllImports(); |
| } |
| |
| bool HTMLImport::unblock(HTMLImport* import) |
| { |
| ASSERT(import->arePredecessorsLoaded()); |
| ASSERT(import->isBlocked() || import->areChilrenLoaded()); |
| |
| if (import->isBlocked()) { |
| for (size_t i = 0; i < import->m_children.size(); ++i) { |
| if (!unblock(import->m_children[i])) |
| return false; |
| } |
| } |
| |
| import->unblock(); |
| return import->isLoaded(); |
| } |
| |
| void HTMLImport::block(HTMLImport* import) |
| { |
| import->block(); |
| for (size_t i = 0; i < import->m_children.size(); ++i) |
| block(import->m_children[i]); |
| } |
| |
| void HTMLImport::blockAfter(HTMLImport* child) |
| { |
| ASSERT(child->parent() == this); |
| |
| for (size_t i = 0; i < m_children.size(); ++i) { |
| HTMLImport* sibling = m_children[m_children.size() - i - 1]; |
| if (sibling == child) |
| break; |
| HTMLImport::block(sibling); |
| } |
| |
| this->block(); |
| |
| if (HTMLImport* parent = this->parent()) |
| parent->blockAfter(this); |
| } |
| |
| |
| } // namespace WebCore |