Use IDL argument default values in Document.idl

Source/core/dom/Document.cpp

 /*
  * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
  *           (C) 1999 Antti Koivisto (koivisto@kde.org)
  *           (C) 2001 Dirk Mueller (mueller@kde.org)
  *           (C) 2006 Alexey Proskuryakov (ap@webkit.org)
  * Copyright (C) 2004, 2005, 2006, 2007, 2008, 2009, 2011, 2012 Apple Inc. All rights reserved.
  * Copyright (C) 2008, 2009 Torch Mobile Inc. All rights reserved. (http://www.torchmobile.com/)
  * Copyright (C) 2008, 2009, 2011, 2012 Google Inc. All rights reserved.
  * Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies)
  * Copyright (C) Research In Motion Limited 2010-2011. All rights reserved.
@@ skipping 1524 matching lines @@
 Settings* Document::settings() const
 {
     return m_frame ? m_frame->settings() : 0;
 }
 
 PassRefPtrWillBeRawPtr<Range> Document::createRange()
 {
     return Range::create(*this);
 }
 
-PassRefPtrWillBeRawPtr<NodeIterator> Document::createNodeIterator(Node* root, ExceptionState& exceptionState)
+PassRefPtrWillBeRawPtr<NodeIterator> Document::createNodeIterator(Node* root, unsigned whatToShow, PassRefPtrWillBeRawPtr<NodeFilter> filter, ExceptionState& exceptionState)
 {
-    // FIXME: Probably this should be handled within the bindings layer and TypeError should be thrown.
-    if (!root) {
-        exceptionState.throwDOMException(NotSupportedError, ExceptionMessages::argumentNullOrIncorrectType(1, "Node"));
-        return nullptr;
-    }
-    return NodeIterator::create(root, NodeFilter::SHOW_ALL, nullptr);
-}
-
-PassRefPtrWillBeRawPtr<NodeIterator> Document::createNodeIterator(Node* root, unsigned whatToShow, ExceptionState& exceptionState)
-{
+    // FIXME: Probably this should be handled within the bindings layer and Type Error should be thrown.
     if (!root) {
         exceptionState.throwDOMException(NotSupportedError, ExceptionMessages::argumentNullOrIncorrectType(1, "Node"));
         return nullptr;
     }
     // FIXME: It might be a good idea to emit a warning if |whatToShow| contains a bit that is not defined in
     // NodeFilter.
-    return NodeIterator::create(root, whatToShow, nullptr);
-}
-
-PassRefPtrWillBeRawPtr<NodeIterator> Document::createNodeIterator(Node* root, unsigned whatToShow, PassRefPtrWillBeRawPtr<NodeFilter> filter, ExceptionState& exceptionState)
-{
-    if (!root) {
-        exceptionState.throwDOMException(NotSupportedError, ExceptionMessages::argumentNullOrIncorrectType(1, "Node"));
-        return nullptr;
-    }
-    // FIXME: Ditto.
     return NodeIterator::create(root, whatToShow, filter);
 }
 
-PassRefPtrWillBeRawPtr<TreeWalker> Document::createTreeWalker(Node* root, ExceptionState& exceptionState)
-{
-    if (!root) {
-        exceptionState.throwDOMException(NotSupportedError, ExceptionMessages::argumentNullOrIncorrectType(1, "Node"));
-        return nullptr;
-    }
-    return TreeWalker::create(root, NodeFilter::SHOW_ALL, nullptr);
-}
-
-PassRefPtrWillBeRawPtr<TreeWalker> Document::createTreeWalker(Node* root, unsigned whatToShow, ExceptionState& exceptionState)
-{
-    if (!root) {
-        exceptionState.throwDOMException(NotSupportedError, ExceptionMessages::argumentNullOrIncorrectType(1, "Node"));
-        return nullptr;
-    }
-    return TreeWalker::create(root, whatToShow, nullptr);
-}
-
 PassRefPtrWillBeRawPtr<TreeWalker> Document::createTreeWalker(Node* root, unsigned whatToShow, PassRefPtrWillBeRawPtr<NodeFilter> filter, ExceptionState& exceptionState)
 {
+    // FIXME: Probably this should be handled within the bindings layer and Type Error should be thrown.
     if (!root) {
         exceptionState.throwDOMException(NotSupportedError, ExceptionMessages::argumentNullOrIncorrectType(1, "Node"));
         return nullptr;
     }
     return TreeWalker::create(root, whatToShow, filter);
 }
 
 bool Document::needsRenderTreeUpdate() const
 {
     if (!isActive() || !view())
@@ skipping 4265 matching lines @@
     visitor->trace(m_compositorPendingAnimations);
     visitor->trace(m_contextDocument);
     visitor->registerWeakMembers<Document, &Document::clearWeakMembers>(this);
     DocumentSupplementable::trace(visitor);
     TreeScope::trace(visitor);
     ContainerNode::trace(visitor);
     ExecutionContext::trace(visitor);
 }
 
 } // namespace WebCore