gecko-dev/content/base/src/nsTextNode.cpp

/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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 * for the specific language governing rights and limitations under the
 * License.
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 * The Original Code is Mozilla Communicator client code.
 *
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 *
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#include "nsGenericDOMDataNode.h"
#include "nsIDOMText.h"
#include "nsLayoutAtoms.h"
#include "nsContentUtils.h"


class nsTextNode : public nsGenericDOMDataNode,
                   public nsIDOMText
{
public:
  nsTextNode();
  virtual ~nsTextNode();

  // nsISupports
  NS_DECL_ISUPPORTS_INHERITED

  // nsIDOMNode
  NS_IMPL_NSIDOMNODE_USING_GENERIC_DOM_DATA

  // nsIDOMCharacterData
  NS_FORWARD_NSIDOMCHARACTERDATA(nsGenericDOMDataNode::)

  // nsIDOMText
  NS_FORWARD_NSIDOMTEXT(nsGenericDOMDataNode::)

  // nsIContent
  virtual nsIAtom *Tag() const;
  virtual PRBool IsContentOfType(PRUint32 aFlags) const;
#ifdef DEBUG
  virtual void List(FILE* out, PRInt32 aIndent) const;
  virtual void DumpContent(FILE* out, PRInt32 aIndent, PRBool aDumpAll) const;
#endif

  // nsITextContent
  NS_IMETHOD CloneContent(PRBool aCloneText, nsITextContent** aClone);
};

nsresult
NS_NewTextNode(nsITextContent** aInstancePtrResult)
{
  *aInstancePtrResult = new nsTextNode();
  NS_ENSURE_TRUE(*aInstancePtrResult, NS_ERROR_OUT_OF_MEMORY);

  NS_ADDREF(*aInstancePtrResult);

  return NS_OK;
}

nsTextNode::nsTextNode()
{
}

nsTextNode::~nsTextNode()
{
}

NS_IMPL_ADDREF_INHERITED(nsTextNode, nsGenericDOMDataNode)
NS_IMPL_RELEASE_INHERITED(nsTextNode, nsGenericDOMDataNode)


// QueryInterface implementation for nsTextNode
NS_INTERFACE_MAP_BEGIN(nsTextNode)
  NS_INTERFACE_MAP_ENTRY(nsITextContent)
  NS_INTERFACE_MAP_ENTRY(nsIDOMNode)
  NS_INTERFACE_MAP_ENTRY(nsIDOMText)
  NS_INTERFACE_MAP_ENTRY(nsIDOMCharacterData)
  NS_INTERFACE_MAP_ENTRY_CONTENT_CLASSINFO(Text)
NS_INTERFACE_MAP_END_INHERITING(nsGenericDOMDataNode)

nsIAtom *
nsTextNode::Tag() const
{
  return nsLayoutAtoms::textTagName;
}

NS_IMETHODIMP
nsTextNode::GetNodeName(nsAString& aNodeName)
{
  aNodeName.Assign(NS_LITERAL_STRING("#text"));
  return NS_OK;
}

NS_IMETHODIMP
nsTextNode::GetNodeValue(nsAString& aNodeValue)
{
  return nsGenericDOMDataNode::GetNodeValue(aNodeValue);
}

NS_IMETHODIMP
nsTextNode::SetNodeValue(const nsAString& aNodeValue)
{
  return nsGenericDOMDataNode::SetNodeValue(aNodeValue);
}

NS_IMETHODIMP
nsTextNode::GetNodeType(PRUint16* aNodeType)
{
  *aNodeType = (PRUint16)nsIDOMNode::TEXT_NODE;
  return NS_OK;
}

NS_IMETHODIMP
nsTextNode::CloneNode(PRBool aDeep, nsIDOMNode** aReturn)
{
  nsCOMPtr<nsITextContent> textContent;
  nsresult rv = CloneContent(PR_TRUE, getter_AddRefs(textContent));
  NS_ENSURE_SUCCESS(rv, rv);

  return CallQueryInterface(textContent, aReturn);
}

NS_IMETHODIMP
nsTextNode::CloneContent(PRBool aCloneText, nsITextContent** aReturn)
{
  nsTextNode* it = new nsTextNode();
  NS_ENSURE_TRUE(it, NS_ERROR_OUT_OF_MEMORY);

  nsCOMPtr<nsIContent> kungFuDeathGrip(it);

  if (aCloneText) {
    it->mText = mText;
  }

  *aReturn = it;
  NS_ADDREF(*aReturn);

  return NS_OK;
}

PRBool
nsTextNode::IsContentOfType(PRUint32 aFlags) const
{
  return !(aFlags & ~eTEXT);
}

#ifdef DEBUG
void
nsTextNode::List(FILE* out, PRInt32 aIndent) const
{
  NS_PRECONDITION(mDocument, "bad content");

  PRInt32 index;
  for (index = aIndent; --index >= 0; ) fputs("  ", out);

  fprintf(out, "Text@%p refcount=%d<", this, mRefCnt.get());

  nsAutoString tmp;
  ToCString(tmp, 0, mText.GetLength());
  fputs(NS_LossyConvertUCS2toASCII(tmp).get(), out);

  fputs(">\n", out);
}

void
nsTextNode::DumpContent(FILE* out, PRInt32 aIndent, PRBool aDumpAll) const
{
  NS_PRECONDITION(mDocument, "bad content");

  if(aDumpAll) {
    PRInt32 index;
    for (index = aIndent; --index >= 0; ) fputs("  ", out);

    nsAutoString tmp;
    ToCString(tmp, 0, mText.GetLength());

    if(!tmp.Equals(NS_LITERAL_STRING("\\n"))) {
      fputs(NS_LossyConvertUCS2toASCII(tmp).get(), out);
      if(aIndent) fputs("\n", out);
    }
  }
}
#endif