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 * Version: MPL 1.1/GPL 2.0/LGPL 2.1
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 * for the specific language governing rights and limitations under the
 * License.
 *
 * The Original Code is mozilla.org code.
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 * The Initial Developer of the Original Code is
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 *
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 * either of the GNU General Public License Version 2 or later (the "GPL"),
 * or the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
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#include "nsTextEditUtils.h"

#include "mozilla/dom/Element.h"

#include "nsEditor.h"
#include "nsPlaintextEditor.h"
#include "nsEditProperty.h"

using namespace mozilla;

///////////////////////////////////////////////////////////////////////////
// IsBody: true if node an html body node
//                  
// Would use NodeIsType and the corresponding atom, but
// the atom list isn't generationed in a plaintext-only
// configured build.
bool 
nsTextEditUtils::IsBody(nsIDOMNode *node)
{
  return nsEditor::NodeIsTypeString(node, NS_LITERAL_STRING("body"));
}


///////////////////////////////////////////////////////////////////////////
// IsBreak: true if node an html break node
//                  
// See previous comment regarding NodeisType
bool 
nsTextEditUtils::IsBreak(nsIDOMNode *node)
{
  return nsEditor::NodeIsTypeString(node, NS_LITERAL_STRING("br"));
}


///////////////////////////////////////////////////////////////////////////
// IsMozBR: true if node an html br node with type = _moz
//                  
bool 
nsTextEditUtils::IsMozBR(nsIDOMNode *node)
{
  NS_PRECONDITION(node, "null node passed to nsHTMLEditUtils::IsMozBR");
  return IsBreak(node) && HasMozAttr(node);
}


bool
nsTextEditUtils::IsMozBR(dom::Element* aNode)
{
  MOZ_ASSERT(aNode);
  return aNode->IsHTML(nsGkAtoms::br) &&
         aNode->AttrValueIs(kNameSpaceID_None, nsGkAtoms::type,
                            NS_LITERAL_STRING("_moz"), eIgnoreCase);
}

///////////////////////////////////////////////////////////////////////////
// HasMozAttr: true if node has type attribute = _moz
//             (used to indicate the div's and br's we use in
//              mail compose rules)
//                  
bool 
nsTextEditUtils::HasMozAttr(nsIDOMNode *node)
{
  NS_PRECONDITION(node, "null parent passed to nsHTMLEditUtils::HasMozAttr");
  nsCOMPtr<nsIDOMElement> elem = do_QueryInterface(node);
  if (elem)
  {
    nsAutoString typeAttrVal;
    nsresult res = elem->GetAttribute(NS_LITERAL_STRING("type"), typeAttrVal);
    if (NS_SUCCEEDED(res) && (typeAttrVal.LowerCaseEqualsLiteral("_moz")))
      return true;
  }
  return false;
}


///////////////////////////////////////////////////////////////////////////
// nsAutoEditInitRulesTrigger methods
//
nsAutoEditInitRulesTrigger::nsAutoEditInitRulesTrigger( nsPlaintextEditor *aEd, nsresult &aRes) : mEd(aEd), mRes(aRes)
{
    if (mEd) mEd->BeginEditorInit();
}

nsAutoEditInitRulesTrigger::~nsAutoEditInitRulesTrigger()
{
    if (mEd) mRes = mEd->EndEditorInit();
}