448 lines
13 KiB
C++
448 lines
13 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 License
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* Version 1.0 (the "License"); you may not use this file except in
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* compliance with the License. You may obtain a copy of the License at
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* http://www.mozilla.org/NPL/
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*
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* Software distributed under the License is distributed on an "AS IS"
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* basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
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* the License for the specific language governing rights and limitations
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* 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 Copyright (C) 1998
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* Netscape Communications Corporation. All Rights Reserved.
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*/
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#include "nsIDOMHTMLTextAreaElement.h"
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#include "nsIDOMHTMLFormElement.h"
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#include "nsIFormControl.h"
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#include "nsIForm.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 "nsStyleConsts.h"
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#include "nsIPresContext.h"
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#include "nsIWidget.h"
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#include "nsITextAreaWidget.h"
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#include "nsIHTMLAttributes.h"
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#include "nsIFormControlFrame.h"
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static NS_DEFINE_IID(kIDOMHTMLTextAreaElementIID, NS_IDOMHTMLTEXTAREAELEMENT_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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static NS_DEFINE_IID(kITextAreaWidgetIID, NS_ITEXTAREAWIDGET_IID);
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class nsHTMLTextAreaElement : public nsIDOMHTMLTextAreaElement,
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public nsIScriptObjectOwner,
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public nsIDOMEventReceiver,
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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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nsHTMLTextAreaElement(nsIAtom* aTag);
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virtual ~nsHTMLTextAreaElement();
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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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// nsIDOMHTMLTextAreaElement
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NS_IMETHOD GetDefaultValue(nsString& aDefaultValue);
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NS_IMETHOD SetDefaultValue(const nsString& aDefaultValue);
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NS_IMETHOD GetForm(nsIDOMHTMLFormElement** aForm);
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NS_IMETHOD GetAccessKey(nsString& aAccessKey);
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NS_IMETHOD SetAccessKey(const nsString& aAccessKey);
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NS_IMETHOD GetCols(PRInt32* aCols);
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NS_IMETHOD SetCols(PRInt32 aCols);
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NS_IMETHOD GetDisabled(PRBool* aDisabled);
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NS_IMETHOD SetDisabled(PRBool aDisabled);
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NS_IMETHOD GetName(nsString& aName);
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NS_IMETHOD SetName(const nsString& aName);
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NS_IMETHOD GetReadOnly(PRBool* aReadOnly);
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NS_IMETHOD SetReadOnly(PRBool aReadOnly);
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NS_IMETHOD GetRows(PRInt32* aRows);
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NS_IMETHOD SetRows(PRInt32 aRows);
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NS_IMETHOD GetTabIndex(PRInt32* aTabIndex);
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NS_IMETHOD SetTabIndex(PRInt32 aTabIndex);
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NS_IMETHOD GetType(nsString& aType);
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NS_IMETHOD GetValue(nsString& aValue);
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NS_IMETHOD SetValue(const nsString& aValue);
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NS_IMETHOD Blur();
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NS_IMETHOD Focus();
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NS_IMETHOD Select();
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// nsIScriptObjectOwner
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NS_IMPL_ISCRIPTOBJECTOWNER_USING_GENERIC(mInner)
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// nsIDOMEventReceiver
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NS_IMPL_IDOMEVENTRECEIVER_USING_GENERIC(mInner)
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// nsIContent
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NS_IMPL_ICONTENT_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 SetForm(nsIDOMHTMLFormElement* aForm);
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NS_IMETHOD GetType(PRInt32* aType);
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NS_IMETHOD SetWidget(nsIWidget* aWidget);
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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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nsIWidget* mWidget; // XXX this needs to go away when FindFrameWithContent is efficient
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nsIForm* mForm;
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};
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nsresult
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NS_NewHTMLTextAreaElement(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 nsHTMLTextAreaElement(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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nsHTMLTextAreaElement::nsHTMLTextAreaElement(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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mWidget = nsnull;
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}
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nsHTMLTextAreaElement::~nsHTMLTextAreaElement()
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{
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NS_IF_RELEASE(mWidget);
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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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NS_IMETHODIMP
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nsHTMLTextAreaElement::AddRef(void)
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{
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return ++mRefCnt;
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}
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nsresult
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nsHTMLTextAreaElement::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(kIDOMHTMLTextAreaElementIID)) {
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*aInstancePtr = (void*)(nsIDOMHTMLTextAreaElement*) this;
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mRefCnt++;
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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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mRefCnt++;
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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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NS_IMETHODIMP_(nsrefcnt)
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nsHTMLTextAreaElement::Release()
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{
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--mRefCnt;
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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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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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// nsIDOMHTMLTextAreaElement
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nsresult
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nsHTMLTextAreaElement::CloneNode(PRBool aDeep, nsIDOMNode** aReturn)
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{
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nsHTMLTextAreaElement* it = new nsHTMLTextAreaElement(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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NS_IMETHODIMP
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nsHTMLTextAreaElement::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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NS_IMETHODIMP
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nsHTMLTextAreaElement::Blur() // XXX not tested
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{
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if (nsnull != mWidget) {
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nsIWidget *mParentWidget = mWidget->GetParent();
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if (nsnull != mParentWidget) {
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mParentWidget->SetFocus();
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NS_RELEASE(mParentWidget);
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}
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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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nsHTMLTextAreaElement::Focus() // XXX not tested
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{
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if (nsnull != mWidget) {
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mWidget->SetFocus();
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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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nsHTMLTextAreaElement::Select() // XXX not tested
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{
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if (nsnull != mWidget) {
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nsITextAreaWidget *textWidget;
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if (NS_OK == mWidget->QueryInterface(kITextAreaWidgetIID, (void**)&textWidget)) {
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textWidget->SelectAll();
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NS_RELEASE(textWidget);
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}
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}
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return NS_OK;
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}
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NS_IMPL_STRING_ATTR(nsHTMLTextAreaElement, AccessKey, accesskey)
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NS_IMPL_INT_ATTR(nsHTMLTextAreaElement, Cols, cols)
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NS_IMPL_BOOL_ATTR(nsHTMLTextAreaElement, Disabled, disabled)
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NS_IMPL_STRING_ATTR(nsHTMLTextAreaElement, Name, name)
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NS_IMPL_BOOL_ATTR(nsHTMLTextAreaElement, ReadOnly, readonly)
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NS_IMPL_INT_ATTR(nsHTMLTextAreaElement, Rows, rows)
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NS_IMPL_INT_ATTR(nsHTMLTextAreaElement, TabIndex, tabindex)
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NS_IMETHODIMP
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nsHTMLTextAreaElement::GetType(nsString& aType)
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{
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aType.SetString("textarea");
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return NS_OK;
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}
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NS_IMETHODIMP
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nsHTMLTextAreaElement::GetValue(nsString& aValue)
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{
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nsIFormControlFrame* formControlFrame = nsnull;
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if (NS_OK == nsGenericHTMLElement::GetPrimaryFrame(this, formControlFrame)) {
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formControlFrame->GetProperty(nsHTMLAtoms::value, aValue);
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NS_RELEASE(formControlFrame);
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return NS_OK;
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}
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//XXX: Should this ASSERT instead of getting the default value here?
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return mInner.GetAttribute(kNameSpaceID_HTML, nsHTMLAtoms::value, aValue);
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}
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NS_IMETHODIMP
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nsHTMLTextAreaElement::SetValue(const nsString& aValue)
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{
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nsIFormControlFrame* formControlFrame = nsnull;
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if (NS_OK == nsGenericHTMLElement::GetPrimaryFrame(this, formControlFrame)) {
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formControlFrame->SetProperty(nsHTMLAtoms::value, aValue);
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NS_RELEASE(formControlFrame);
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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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nsHTMLTextAreaElement::GetDefaultValue(nsString& aDefaultValue)
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{
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mInner.GetAttribute(kNameSpaceID_HTML, nsHTMLAtoms::value, aDefaultValue);
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return NS_OK;
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}
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NS_IMETHODIMP
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nsHTMLTextAreaElement::SetDefaultValue(const nsString& aDefaultValue)
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{
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// trim leading whitespace
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static char whitespace[] = " \r\n\t";
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nsString value(aDefaultValue);
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value.Trim(whitespace, PR_TRUE, PR_FALSE);
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mInner.SetAttribute(kNameSpaceID_HTML, nsHTMLAtoms::value, value, PR_TRUE);
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return NS_OK;
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}
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NS_IMETHODIMP
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nsHTMLTextAreaElement::StringToAttribute(nsIAtom* aAttribute,
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const nsString& aValue,
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nsHTMLValue& aResult)
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{
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if (aAttribute == nsHTMLAtoms::disabled) {
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aResult.SetEmptyValue();
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return NS_CONTENT_ATTR_HAS_VALUE;
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}
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else if (aAttribute == nsHTMLAtoms::cols) {
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nsGenericHTMLElement::ParseValue(aValue, 0, aResult, eHTMLUnit_Integer);
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return NS_CONTENT_ATTR_HAS_VALUE;
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}
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else if (aAttribute == nsHTMLAtoms::readonly) {
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aResult.SetEmptyValue();
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return NS_CONTENT_ATTR_HAS_VALUE;
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}
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else if (aAttribute == nsHTMLAtoms::rows) {
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nsGenericHTMLElement::ParseValue(aValue, 0, aResult, eHTMLUnit_Integer);
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return NS_CONTENT_ATTR_HAS_VALUE;
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}
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else if (aAttribute == nsHTMLAtoms::tabindex) {
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nsGenericHTMLElement::ParseValue(aValue, 0, aResult, eHTMLUnit_Integer);
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return NS_CONTENT_ATTR_HAS_VALUE;
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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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nsHTMLTextAreaElement::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(nsIHTMLAttributes* aAttributes,
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nsIStyleContext* aContext,
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nsIPresContext* aPresContext)
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{
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nsHTMLValue value;
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aAttributes->GetAttribute(nsHTMLAtoms::align, value);
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if (eHTMLUnit_Enumerated == value.GetUnit()) {
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nsStyleDisplay* display = (nsStyleDisplay*)
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aContext->GetMutableStyleData(eStyleStruct_Display);
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nsStyleText* text = (nsStyleText*)
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aContext->GetMutableStyleData(eStyleStruct_Text);
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switch (value.GetIntValue()) {
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case NS_STYLE_TEXT_ALIGN_LEFT:
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display->mFloats = NS_STYLE_FLOAT_LEFT;
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break;
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case NS_STYLE_TEXT_ALIGN_RIGHT:
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display->mFloats = NS_STYLE_FLOAT_RIGHT;
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break;
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default:
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text->mVerticalAlign.SetIntValue(value.GetIntValue(), eStyleUnit_Enumerated);
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break;
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}
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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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nsHTMLTextAreaElement::GetAttributeMappingFunction(nsMapAttributesFunc& aMapFunc) const
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{
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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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nsHTMLTextAreaElement::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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nsHTMLTextAreaElement::GetType(PRInt32* aType)
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{
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if (aType) {
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*aType = NS_FORM_TEXTAREA;
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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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nsHTMLTextAreaElement::SetWidget(nsIWidget* aWidget)
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{
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if (aWidget != mWidget) {
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NS_IF_RELEASE(mWidget);
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NS_IF_ADDREF(aWidget);
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mWidget = aWidget;
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}
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return NS_OK;
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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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nsHTMLTextAreaElement::SetForm(nsIDOMHTMLFormElement* aForm)
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{
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nsresult result = NS_OK;
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if (nsnull == aForm) {
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mForm = nsnull;
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return NS_OK;
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} else {
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NS_IF_RELEASE(mForm);
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nsIFormControl* formControl = nsnull;
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result = QueryInterface(kIFormControlIID, (void**)&formControl);
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if ((NS_OK == result) && 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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NS_RELEASE(formControl);
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}
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}
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return result;
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}
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NS_IMETHODIMP
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nsHTMLTextAreaElement::GetStyleHintForAttributeChange(
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const nsIAtom* aAttribute,
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PRInt32 *aHint) const
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{
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nsGenericHTMLElement::SetStyleHintForCommonAttributes(this, aAttribute, aHint);
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return NS_OK;
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}
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