Mozilla/mozilla/layout/html/content/src/nsHTMLOptGroupElement.cpp

/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-
 *
 * The contents of this file are subject to the Netscape Public
 * License Version 1.1 (the "License"); you may not use this file
 * except in compliance with the License. You may obtain a copy of
 * the License at http://www.mozilla.org/NPL/
 *
 * Software distributed under the License is distributed on an "AS
 * IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
 * implied. See the License for the specific language governing
 * rights and limitations under the License.
 *
 * The Original Code is Mozilla Communicator client code.
 *
 * The Initial Developer of the Original Code is Netscape Communications
 * Corporation.  Portions created by Netscape are
 * Copyright (C) 1998 Netscape Communications Corporation. All
 * Rights Reserved.
 *
 * Contributor(s): 
 */
#include "nsIDOMHTMLOptGroupElement.h"
#include "nsIScriptObjectOwner.h"
#include "nsIDOMEventReceiver.h"
#include "nsIHTMLContent.h"
#include "nsGenericHTMLElement.h"
#include "nsHTMLAtoms.h"
#include "nsHTMLIIDs.h"
#include "nsIStyleContext.h"
#include "nsIMutableStyleContext.h"
#include "nsStyleConsts.h"
#include "nsIPresContext.h"
#include "nsIFrame.h"
#include "nsIFormControlFrame.h"



class nsHTMLOptGroupElement : public nsGenericHTMLContainerElement,
                              public nsIDOMHTMLOptGroupElement
{
public:
  nsHTMLOptGroupElement();
  virtual ~nsHTMLOptGroupElement();

  // nsISupports
  NS_DECL_ISUPPORTS_INHERITED

  // nsIDOMNode
  NS_FORWARD_IDOMNODE_NO_CLONENODE(nsGenericHTMLContainerElement::)

  // nsIDOMElement
  NS_FORWARD_IDOMELEMENT(nsGenericHTMLContainerElement::)

  // nsIDOMHTMLElement
  NS_FORWARD_IDOMHTMLELEMENT(nsGenericHTMLContainerElement::)

  // nsIDOMHTMLOptGroupElement
  NS_DECL_IDOMHTMLOPTGROUPELEMENT

  NS_IMETHOD HandleDOMEvent(nsIPresContext* aPresContext, nsEvent* aEvent,
                            nsIDOMEvent** aDOMEvent, PRUint32 aFlags,
                            nsEventStatus* aEventStatus);
  NS_IMETHOD SizeOf(nsISizeOfHandler* aSizer, PRUint32* aResult) const;
};

nsresult
NS_NewHTMLOptGroupElement(nsIHTMLContent** aInstancePtrResult,
                          nsINodeInfo *aNodeInfo)
{
  NS_ENSURE_ARG_POINTER(aInstancePtrResult);

  nsHTMLOptGroupElement* it = new nsHTMLOptGroupElement();

  if (!it) {
    return NS_ERROR_OUT_OF_MEMORY;
  }

  nsresult rv = it->Init(aNodeInfo);

  if (NS_FAILED(rv)) {
    delete it;

    return rv;
  }

  *aInstancePtrResult = NS_STATIC_CAST(nsIHTMLContent *, it);
  NS_ADDREF(*aInstancePtrResult);

  return NS_OK;
}


nsHTMLOptGroupElement::nsHTMLOptGroupElement()
{
}

nsHTMLOptGroupElement::~nsHTMLOptGroupElement()
{
}


NS_IMPL_ADDREF_INHERITED(nsHTMLOptGroupElement, nsGenericElement);
NS_IMPL_RELEASE_INHERITED(nsHTMLOptGroupElement, nsGenericElement);

NS_IMPL_HTMLCONTENT_QI(nsHTMLOptGroupElement, nsGenericHTMLContainerElement,
                       nsIDOMHTMLOptGroupElement);


nsresult
nsHTMLOptGroupElement::CloneNode(PRBool aDeep, nsIDOMNode** aReturn)
{
  NS_ENSURE_ARG_POINTER(aReturn);
  *aReturn = nsnull;

  nsHTMLOptGroupElement* it = new nsHTMLOptGroupElement();

  if (!it) {
    return NS_ERROR_OUT_OF_MEMORY;
  }

  nsCOMPtr<nsIDOMNode> kungFuDeathGrip(it);

  nsresult rv = it->Init(mNodeInfo);

  if (NS_FAILED(rv))
    return rv;

  CopyInnerTo(this, it, aDeep);

  *aReturn = NS_STATIC_CAST(nsIDOMNode *, it);

  NS_ADDREF(*aReturn);

  return NS_OK;
}


NS_IMPL_BOOL_ATTR(nsHTMLOptGroupElement, Disabled, disabled)
NS_IMPL_STRING_ATTR(nsHTMLOptGroupElement, Label, label)


NS_IMETHODIMP
nsHTMLOptGroupElement::HandleDOMEvent(nsIPresContext* aPresContext,
                                      nsEvent* aEvent,
                                      nsIDOMEvent** aDOMEvent,
                                      PRUint32 aFlags,
                                      nsEventStatus* aEventStatus)
{
  // Do not process any DOM events if the element is disabled
  PRBool disabled;
  nsresult rv = GetDisabled(&disabled);
  if (NS_FAILED(rv) || disabled) {
    return rv;
  }

  nsIFormControlFrame* formControlFrame = nsnull;
  rv = GetPrimaryFrame(this, formControlFrame);
  nsIFrame* formFrame = nsnull;

  if (formControlFrame &&
      NS_SUCCEEDED(formControlFrame->QueryInterface(NS_GET_IID(nsIFrame),
                                                    (void **)&formFrame)) &&
      formFrame)
  {
    const nsStyleUserInterface* uiStyle;
    formFrame->GetStyleData(eStyleStruct_UserInterface,
                            (const nsStyleStruct *&)uiStyle);
    if (uiStyle->mUserInput == NS_STYLE_USER_INPUT_NONE ||
        uiStyle->mUserInput == NS_STYLE_USER_INPUT_DISABLED)
    {
      return NS_OK;
    }
  }

  return nsGenericHTMLContainerElement::HandleDOMEvent(aPresContext, aEvent,
                                                       aDOMEvent, aFlags,
                                                       aEventStatus);
}

NS_IMETHODIMP
nsHTMLOptGroupElement::SizeOf(nsISizeOfHandler* aSizer,
                              PRUint32* aResult) const
{
  *aResult = sizeof(*this) + BaseSizeOf(aSizer);

  return NS_OK;
}