dom/base/nsDOMCaretPosition.cpp
author James Cheng <jacheng@mozilla.com>
Fri, 05 Aug 2016 13:23:44 -0400
changeset 308428 8ee6f2eb8b349a351f6f76585eb85e0ec2b5c475
parent 268184 e8c7dfe727cd970e2c3294934e2927b14143c205
child 423859 a97feb8161b7a4c60a539d83cb702a6e50fab1b1
permissions -rw-r--r--
Bug 1291229 - Fix typo for moving Java bindings to mozilla::java namespace. r=jchen MozReview-Commit-ID: KGAS6EhnwAI

/* -*- 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 "nsDOMCaretPosition.h"

#include "mozilla/dom/CaretPositionBinding.h"
#include "mozilla/dom/DOMRect.h"
#include "nsRange.h"

using namespace mozilla::dom;

nsDOMCaretPosition::nsDOMCaretPosition(nsINode* aNode, uint32_t aOffset)
  : mOffset(aOffset), mOffsetNode(aNode), mAnonymousContentNode(nullptr)
{
}

nsDOMCaretPosition::~nsDOMCaretPosition()
{
}

nsINode* nsDOMCaretPosition::GetOffsetNode() const
{
  return mOffsetNode;
}

already_AddRefed<DOMRect>
nsDOMCaretPosition::GetClientRect() const
{
  if (!mOffsetNode) {
    return nullptr;
  }

  RefPtr<DOMRect> rect;
  RefPtr<nsRange> domRange;
  nsCOMPtr<nsINode> node;

  if (mAnonymousContentNode) {
    node = mAnonymousContentNode;
  } else {
    node = mOffsetNode;
  }

  nsresult creationRv = nsRange::CreateRange(node, mOffset, node,
                                             mOffset,
                                             getter_AddRefs<nsRange>(domRange));
  if (!NS_SUCCEEDED(creationRv)) {
    return nullptr;
  }

  NS_ASSERTION(domRange, "unable to retrieve valid dom range from CaretPosition");

  rect = domRange->GetBoundingClientRect(false);

  return rect.forget();
}

JSObject*
nsDOMCaretPosition::WrapObject(JSContext *aCx, JS::Handle<JSObject*> aGivenProto)
{
  return mozilla::dom::CaretPositionBinding::Wrap(aCx, this, aGivenProto);
}

NS_IMPL_CYCLE_COLLECTION_WRAPPERCACHE(nsDOMCaretPosition,
                                      mOffsetNode, mAnonymousContentNode)

NS_IMPL_CYCLE_COLLECTING_ADDREF(nsDOMCaretPosition)
NS_IMPL_CYCLE_COLLECTING_RELEASE(nsDOMCaretPosition)

NS_INTERFACE_MAP_BEGIN_CYCLE_COLLECTION(nsDOMCaretPosition)
  NS_WRAPPERCACHE_INTERFACE_MAP_ENTRY
  NS_INTERFACE_MAP_ENTRY(nsISupports)
NS_INTERFACE_MAP_END