/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */

/* vim: set ts=8 sts=2 et sw=2 tw=80: */

/* This Source Code Form is subject to the terms of the Mozilla Public

 * License, v. 2.0. If a copy of the MPL was not distributed with this

 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */

#include "mozilla/dom/XBLChildrenElement.h"

#include "nsCharSeparatedTokenizer.h"

#include "mozilla/dom/NodeListBinding.h"

#include "nsAttrValueOrString.h"

namespace mozilla {

namespace dom {

XBLChildrenElement::~XBLChildrenElement()

{

}

NS_IMPL_ELEMENT_CLONE(XBLChildrenElement)

nsresult

XBLChildrenElement::BeforeSetAttr(int32_t aNamespaceID, nsAtom* aName,

                                  const nsAttrValueOrString* aValue,

                                  bool aNotify)

{

  if (aNamespaceID == kNameSpaceID_None) {

    if (aName == nsGkAtoms::includes) {

      mIncludes.Clear();

      if (aValue) {

        nsCharSeparatedTokenizer tok(aValue->String(), '|',

                                     nsCharSeparatedTokenizer::SEPARATOR_OPTIONAL);

        while (tok.hasMoreTokens()) {

          mIncludes.AppendElement(NS_Atomize(tok.nextToken()));

        }

      }

    }

  }

  return nsXMLElement::BeforeSetAttr(aNamespaceID, aName, aValue, aNotify);

}

void

XBLChildrenElement::DoRemoveDefaultContent(bool aNotify)

{

  // Default content is going away, need to tell layout about it first.

  MOZ_ASSERT(HasChildren(), "Why bothering?");

  MOZ_ASSERT(GetParentElement());

  // We don't want to do this from frame construction while setting up the

  // binding initially.

  if (aNotify) {

    Element* parent = GetParentElement();

    if (nsIDocument* doc = parent->GetComposedDoc()) {

      if (nsIPresShell* shell = doc->GetShell()) {

        shell->DestroyFramesForAndRestyle(parent);

      }

    }

  }

  for (nsIContent* child = static_cast<nsINode*>(this)->GetFirstChild();

       child;

       child = child->GetNextSibling()) {

    MOZ_ASSERT(!child->GetPrimaryFrame());

    MOZ_ASSERT(!child->IsElement() || !child->AsElement()->HasServoData());

    child->SetXBLInsertionPoint(nullptr);

  }

}

} // namespace dom

} // namespace mozilla

using namespace mozilla::dom;

NS_IMPL_CYCLE_COLLECTION_WRAPPERCACHE(nsAnonymousContentList, mParent)

NS_IMPL_CYCLE_COLLECTING_ADDREF(nsAnonymousContentList)

NS_IMPL_CYCLE_COLLECTING_RELEASE(nsAnonymousContentList)

NS_INTERFACE_TABLE_HEAD(nsAnonymousContentList)

  NS_WRAPPERCACHE_INTERFACE_TABLE_ENTRY

  NS_INTERFACE_TABLE(nsAnonymousContentList, nsINodeList)

  NS_INTERFACE_TABLE_TO_MAP_SEGUE_CYCLE_COLLECTION(nsAnonymousContentList)

NS_INTERFACE_MAP_END

uint32_t

nsAnonymousContentList::Length()

{

  if (!mParent) {

    return 0;

  }

  uint32_t count = 0;

  for (nsIContent* child = mParent->GetFirstChild();

       child;

       child = child->GetNextSibling()) {

    if (child->NodeInfo()->Equals(nsGkAtoms::children, kNameSpaceID_XBL)) {

      XBLChildrenElement* point = static_cast<XBLChildrenElement*>(child);

      if (point->HasInsertedChildren()) {

        count += point->InsertedChildrenLength();

      }

      else {

        count += point->GetChildCount();

      }

    }

    else {

      ++count;

    }

  }

  return count;

}

nsIContent*

nsAnonymousContentList::Item(uint32_t aIndex)

{

  if (!mParent) {

    return nullptr;

  }

  uint32_t remIndex = aIndex;

  for (nsIContent* child = mParent->GetFirstChild();

       child;

       child = child->GetNextSibling()) {

    if (child->NodeInfo()->Equals(nsGkAtoms::children, kNameSpaceID_XBL)) {

      XBLChildrenElement* point = static_cast<XBLChildrenElement*>(child);

      if (point->HasInsertedChildren()) {

        if (remIndex < point->InsertedChildrenLength()) {

          return point->InsertedChild(remIndex);

        }

        remIndex -= point->InsertedChildrenLength();

      }

      else {

        if (remIndex < point->GetChildCount()) {

          return point->GetChildAt_Deprecated(remIndex);

        }

        remIndex -= point->GetChildCount();

      }

    }

    else {

      if (remIndex == 0) {

        return child;

      }

      --remIndex;

    }

  }

  return nullptr;

}

int32_t

nsAnonymousContentList::IndexOf(nsIContent* aContent)

{

  NS_ASSERTION(!aContent->NodeInfo()->Equals(nsGkAtoms::children,

                                             kNameSpaceID_XBL),

               "Looking for insertion point");

  if (!mParent) {

    return -1;

  }

  int32_t index = 0;

  for (nsIContent* child = mParent->GetFirstChild();

       child;

       child = child->GetNextSibling()) {

    if (child->NodeInfo()->Equals(nsGkAtoms::children, kNameSpaceID_XBL)) {

      XBLChildrenElement* point = static_cast<XBLChildrenElement*>(child);

      if (point->HasInsertedChildren()) {

        int32_t insIndex = point->IndexOfInsertedChild(aContent);

        if (insIndex != -1) {

          return index + insIndex;

        }

        index += point->InsertedChildrenLength();

      }

      else {

        int32_t insIndex = point->ComputeIndexOf(aContent);

        if (insIndex != -1) {

          return index + insIndex;

        }

        index += point->GetChildCount();

      }

    }

    else {

      if (child == aContent) {

        return index;

      }

      ++index;

    }

  }

  return -1;

}

JSObject*

nsAnonymousContentList::WrapObject(JSContext *cx, JS::Handle<JSObject*> aGivenProto)

{

  return mozilla::dom::NodeList_Binding::Wrap(cx, this, aGivenProto);

}