317 lines
8.5 KiB
C++
317 lines
8.5 KiB
C++
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-
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*
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* The contents of this file are subject to the Netscape Public
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* License Version 1.1 (the "License"); you may not use this file
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* except in compliance with the License. You may obtain a copy of
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* the License at http://www.mozilla.org/NPL/
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*
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* Software distributed under the License is distributed on an "AS
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* IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
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* implied. See the License for the specific language governing
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* rights and limitations under the License.
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*
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* The Original Code is Mozilla Communicator client code.
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*
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* The Initial Developer of the Original Code is Netscape Communications
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* Corporation. Portions created by Netscape are
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* Copyright (C) 1998 Netscape Communications Corporation. All
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* Rights Reserved.
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*
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* Contributor(s):
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*/
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#include "nsIDOMHTMLFieldSetElement.h"
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#include "nsIDOMHTMLFormElement.h"
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#include "nsIScriptObjectOwner.h"
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#include "nsIDOMEventReceiver.h"
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#include "nsIHTMLContent.h"
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#include "nsGenericHTMLElement.h"
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#include "nsHTMLAtoms.h"
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#include "nsHTMLIIDs.h"
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#include "nsIStyleContext.h"
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#include "nsIMutableStyleContext.h"
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#include "nsStyleConsts.h"
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#include "nsIPresContext.h"
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#include "nsIForm.h"
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#include "nsIFormControl.h"
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#include "nsISizeOfHandler.h"
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static NS_DEFINE_IID(kIDOMHTMLFieldSetElementIID, NS_IDOMHTMLFIELDSETELEMENT_IID);
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static NS_DEFINE_IID(kIDOMHTMLFormElementIID, NS_IDOMHTMLFORMELEMENT_IID);
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static NS_DEFINE_IID(kIFormControlIID, NS_IFORMCONTROL_IID);
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static NS_DEFINE_IID(kIFormIID, NS_IFORM_IID);
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class nsHTMLFieldSetElement : public nsIDOMHTMLFieldSetElement,
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public nsIJSScriptObject,
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public nsIHTMLContent,
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public nsIFormControl
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{
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public:
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nsHTMLFieldSetElement(nsIAtom* aTag);
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virtual ~nsHTMLFieldSetElement();
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// nsISupports
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NS_DECL_ISUPPORTS
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// nsIDOMNode
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NS_IMPL_IDOMNODE_USING_GENERIC(mInner)
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// nsIDOMElement
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NS_IMPL_IDOMELEMENT_USING_GENERIC(mInner)
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// nsIDOMHTMLElement
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NS_IMPL_IDOMHTMLELEMENT_USING_GENERIC(mInner)
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// nsIDOMHTMLLegendElement
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NS_IMETHOD GetForm(nsIDOMHTMLFormElement** aForm);
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NS_IMETHOD SetForm(nsIDOMHTMLFormElement* aForm);
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// nsIJSScriptObject
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NS_IMPL_IJSSCRIPTOBJECT_USING_GENERIC(mInner)
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// nsIContent
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NS_IMPL_ICONTENT_NO_SETPARENT_NO_SETDOCUMENT_USING_GENERIC(mInner)
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// nsIHTMLContent
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NS_IMPL_IHTMLCONTENT_USING_GENERIC(mInner)
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// nsIFormControl
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NS_IMETHOD GetType(PRInt32* aType);
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NS_IMETHOD Init() { return NS_OK; }
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protected:
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nsGenericHTMLContainerElement mInner;
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nsIForm* mForm;
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};
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// construction, destruction
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nsresult
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NS_NewHTMLFieldSetElement(nsIHTMLContent** aInstancePtrResult, nsIAtom* aTag)
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{
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NS_PRECONDITION(nsnull != aInstancePtrResult, "null ptr");
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if (nsnull == aInstancePtrResult) {
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return NS_ERROR_NULL_POINTER;
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}
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nsIHTMLContent* it = new nsHTMLFieldSetElement(aTag);
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if (nsnull == it) {
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return NS_ERROR_OUT_OF_MEMORY;
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}
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return it->QueryInterface(kIHTMLContentIID, (void**) aInstancePtrResult);
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}
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nsHTMLFieldSetElement::nsHTMLFieldSetElement(nsIAtom* aTag)
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{
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NS_INIT_REFCNT();
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mInner.Init(this, aTag);
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mForm = nsnull;
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}
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nsHTMLFieldSetElement::~nsHTMLFieldSetElement()
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{
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if (nsnull != mForm) {
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// prevent mForm from decrementing its ref count on us
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mForm->RemoveElement(this, PR_FALSE);
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NS_RELEASE(mForm);
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}
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}
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// nsISupports
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NS_IMPL_ADDREF(nsHTMLFieldSetElement)
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NS_IMETHODIMP_(nsrefcnt)
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nsHTMLFieldSetElement::Release()
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{
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--mRefCnt;
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NS_LOG_RELEASE(this, mRefCnt, "nsHTMLFieldSetElement");
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if (mRefCnt <= 0) {
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delete this;
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return 0;
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} else if ((1 == mRefCnt) && mForm) {
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mRefCnt = 0;
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NS_LOG_RELEASE(this, mRefCnt, "nsHTMLFieldSetElement");
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delete this;
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return 0;
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} else {
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return mRefCnt;
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}
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}
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nsresult
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nsHTMLFieldSetElement::QueryInterface(REFNSIID aIID, void** aInstancePtr)
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{
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NS_IMPL_HTML_CONTENT_QUERY_INTERFACE(aIID, aInstancePtr, this)
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if (aIID.Equals(kIDOMHTMLFieldSetElementIID)) {
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*aInstancePtr = (void*)(nsIDOMHTMLFieldSetElement*)this;
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NS_ADDREF_THIS();
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return NS_OK;
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}
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else if (aIID.Equals(kIFormControlIID)) {
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*aInstancePtr = (void*)(nsIFormControl*)this;
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NS_ADDREF_THIS();
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return NS_OK;
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}
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return NS_NOINTERFACE;
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}
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// nsIDOMHTMLFieldSetElement
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nsresult
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nsHTMLFieldSetElement::CloneNode(PRBool aDeep, nsIDOMNode** aReturn)
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{
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nsHTMLFieldSetElement* it = new nsHTMLFieldSetElement(mInner.mTag);
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if (nsnull == it) {
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return NS_ERROR_OUT_OF_MEMORY;
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}
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mInner.CopyInnerTo(this, &it->mInner, aDeep);
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return it->QueryInterface(kIDOMNodeIID, (void**) aReturn);
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}
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// nsIContent
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NS_IMETHODIMP
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nsHTMLFieldSetElement::SetParent(nsIContent* aParent)
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{
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return mInner.SetParentForFormControls(aParent, this, mForm);
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}
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NS_IMETHODIMP
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nsHTMLFieldSetElement::SetDocument(nsIDocument* aDocument, PRBool aDeep)
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{
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return mInner.SetDocumentForFormControls(aDocument, aDeep, this, mForm);
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}
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NS_IMETHODIMP
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nsHTMLFieldSetElement::GetForm(nsIDOMHTMLFormElement** aForm)
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{
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nsresult result = NS_OK;
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*aForm = nsnull;
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if (nsnull != mForm) {
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nsIDOMHTMLFormElement* formElem = nsnull;
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result = mForm->QueryInterface(kIDOMHTMLFormElementIID, (void**)&formElem);
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if (NS_OK == result) {
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*aForm = formElem;
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}
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}
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return result;
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}
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// An important assumption is that if aForm is null, the previous mForm will not be released
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// This allows nsHTMLFormElement to deal with circular references.
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NS_IMETHODIMP
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nsHTMLFieldSetElement::SetForm(nsIDOMHTMLFormElement* aForm)
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{
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nsresult result;
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nsIFormControl *formControl;
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result = QueryInterface(kIFormControlIID, (void**)&formControl);
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if (NS_FAILED(result))
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formControl = nsnull;
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if (mForm && formControl)
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mForm->RemoveElement(formControl, PR_TRUE);
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if (nsnull == aForm)
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mForm = nsnull;
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else {
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NS_IF_RELEASE(mForm);
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if (formControl) {
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result = aForm->QueryInterface(kIFormIID, (void**)&mForm); // keep the ref
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if ((NS_OK == result) && mForm) {
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mForm->AddElement(formControl);
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}
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}
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}
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NS_IF_RELEASE(formControl);
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return result;
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}
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NS_IMETHODIMP
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nsHTMLFieldSetElement::StringToAttribute(nsIAtom* aAttribute,
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const nsString& aValue,
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nsHTMLValue& aResult)
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{
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return NS_CONTENT_ATTR_NOT_THERE;
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}
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NS_IMETHODIMP
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nsHTMLFieldSetElement::AttributeToString(nsIAtom* aAttribute,
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const nsHTMLValue& aValue,
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nsString& aResult) const
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{
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return mInner.AttributeToString(aAttribute, aValue, aResult);
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}
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static void
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MapAttributesInto(const nsIHTMLMappedAttributes* aAttributes,
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nsIMutableStyleContext* aContext,
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nsIPresContext* aPresContext)
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{
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nsGenericHTMLElement::MapCommonAttributesInto(aAttributes, aContext, aPresContext);
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}
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NS_IMETHODIMP
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nsHTMLFieldSetElement::GetMappedAttributeImpact(const nsIAtom* aAttribute,
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PRInt32& aHint) const
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{
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if (! nsGenericHTMLElement::GetCommonMappedAttributesImpact(aAttribute, aHint)) {
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aHint = NS_STYLE_HINT_CONTENT;
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}
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return NS_OK;
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}
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NS_IMETHODIMP
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nsHTMLFieldSetElement::GetAttributeMappingFunctions(nsMapAttributesFunc& aFontMapFunc,
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nsMapAttributesFunc& aMapFunc) const
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{
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aFontMapFunc = nsnull;
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aMapFunc = &MapAttributesInto;
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return NS_OK;
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}
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NS_IMETHODIMP
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nsHTMLFieldSetElement::HandleDOMEvent(nsIPresContext* aPresContext,
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nsEvent* aEvent,
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nsIDOMEvent** aDOMEvent,
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PRUint32 aFlags,
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nsEventStatus* aEventStatus)
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{
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return mInner.HandleDOMEvent(aPresContext, aEvent, aDOMEvent,
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aFlags, aEventStatus);
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}
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// nsIFormControl
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NS_IMETHODIMP
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nsHTMLFieldSetElement::GetType(PRInt32* aType)
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{
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if (aType) {
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*aType = NS_FORM_FIELDSET;
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return NS_OK;
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} else {
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return NS_FORM_NOTOK;
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}
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}
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NS_IMETHODIMP
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nsHTMLFieldSetElement::SizeOf(nsISizeOfHandler* aSizer, PRUint32* aResult) const
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{
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if (!aResult) return NS_ERROR_NULL_POINTER;
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#ifdef DEBUG
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mInner.SizeOf(aSizer, aResult, sizeof(*this));
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if (mForm) {
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PRBool recorded;
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aSizer->RecordObject(mForm, &recorded);
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if (!recorded) {
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PRUint32 formSize;
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mForm->SizeOf(aSizer, &formSize);
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aSizer->AddSize(nsHTMLAtoms::iform, formSize);
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}
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}
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#endif
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return NS_OK;
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}
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