gecko/editor/libeditor/text/nsTextEditUtils.cpp

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#include "nsTextEditUtils.h"

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

///////////////////////////////////////////////////////////////////////////
// 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.
PRBool 
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
PRBool 
nsTextEditUtils::IsBreak(nsIDOMNode *node)
{
  return nsEditor::NodeIsTypeString(node, NS_LITERAL_STRING("br"));
}


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


///////////////////////////////////////////////////////////////////////////
// HasMozAttr: true if node has type attribute = _moz
//             (used to indicate the div's and br's we use in
//              mail compose rules)
//                  
PRBool 
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 PR_TRUE;
  }
  return PR_FALSE;
}


///////////////////////////////////////////////////////////////////////////
// InBody: true if node is a descendant of the body
//                  
PRBool 
nsTextEditUtils::InBody(nsIDOMNode *node, nsIEditor *editor)
{
  NS_ENSURE_TRUE(node, PR_FALSE);

  nsCOMPtr<nsIDOMElement> rootElement;
  editor->GetRootElement(getter_AddRefs(rootElement));

  nsCOMPtr<nsIDOMNode> tmp;
  nsCOMPtr<nsIDOMNode> p = node;
  while (p != rootElement)
  {
    if (NS_FAILED(p->GetParentNode(getter_AddRefs(tmp))) || !tmp)
      return PR_FALSE;
    p = tmp;
  }
  return PR_TRUE;
}

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

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