c4bfbf18ff
those that aren't This lets the style system optimize style contexts better. git-svn-id: svn://10.0.0.236/trunk@38541 18797224-902f-48f8-a5cc-f745e15eee43
581 lines
18 KiB
C++
581 lines
18 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 "nsIDOMHTMLOptionElement.h"
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#include "nsIDOMHTMLOptGroupElement.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 "nsStyleConsts.h"
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#include "nsIPresContext.h"
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#include "nsIFormControl.h"
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#include "nsIForm.h"
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#include "nsIDOMText.h"
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#include "nsITextContent.h"
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#include "nsIDOMNode.h"
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#include "nsGenericElement.h"
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#include "nsIDOMHTMLCollection.h"
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#include "nsIJSNativeInitializer.h"
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#include "nsISelectElement.h"
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// Notify/query select frame for selected state
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#include "nsIFormControlFrame.h"
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#include "nsIDocument.h"
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#include "nsIPresShell.h"
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#include "nsIFrame.h"
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#include "nsIDOMHTMLSelectElement.h"
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static NS_DEFINE_IID(kIDOMHTMLSelectElementIID, NS_IDOMHTMLSELECTELEMENT_IID);
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static NS_DEFINE_IID(kIDOMHTMLOptionElementIID, NS_IDOMHTMLOPTIONELEMENT_IID);
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static NS_DEFINE_IID(kIDOMHTMLOptGroupElementIID, NS_IDOMHTMLOPTIONELEMENT_IID);
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static NS_DEFINE_IID(kIDOMHTMLFormElementIID, NS_IDOMHTMLFORMELEMENT_IID);
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static NS_DEFINE_IID(kIDOMTextIID, NS_IDOMTEXT_IID);
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static NS_DEFINE_IID(kIFormControlIID, NS_IFORMCONTROL_IID);
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static NS_DEFINE_IID(kISelectElementIID, NS_ISELECTELEMENT_IID);
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static NS_DEFINE_IID(kIFormIID, NS_IFORM_IID);
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static NS_DEFINE_IID(kIFormControlFrameIID, NS_IFORMCONTROLFRAME_IID);
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static NS_DEFINE_IID(kIJSNativeInitializerIID, NS_IJSNATIVEINITIALIZER_IID);
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class nsHTMLOptionElement : public nsIDOMHTMLOptionElement,
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public nsIScriptObjectOwner,
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public nsIDOMEventReceiver,
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public nsIHTMLContent,
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public nsIJSNativeInitializer
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//public nsIFormControl
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{
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public:
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nsHTMLOptionElement(nsIAtom* aTag);
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virtual ~nsHTMLOptionElement();
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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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// nsIDOMHTMLOptionElement
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NS_IMETHOD GetForm(nsIDOMHTMLFormElement** aForm);
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NS_IMETHOD GetDefaultSelected(PRBool* aDefaultSelected);
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NS_IMETHOD SetDefaultSelected(PRBool aDefaultSelected);
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NS_IMETHOD GetText(nsString& aText);
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NS_IMETHOD GetIndex(PRInt32* aIndex);
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NS_IMETHOD SetIndex(PRInt32 aIndex);
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NS_IMETHOD GetDisabled(PRBool* aDisabled);
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NS_IMETHOD SetDisabled(PRBool aDisabled);
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NS_IMETHOD GetLabel(nsString& aLabel);
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NS_IMETHOD SetLabel(const nsString& aLabel);
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NS_IMETHOD GetSelected(PRBool* aSelected);
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NS_IMETHOD GetValue(nsString& aValue);
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NS_IMETHOD SetValue(const nsString& aValue);
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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_NO_SETPARENT_USING_GENERIC(mInner)
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// nsIHTMLContent
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NS_IMPL_IHTMLCONTENT_USING_GENERIC(mInner)
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// nsIJSNativeInitializer
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NS_IMETHOD Initialize(JSContext* aContext, PRUint32 argc, jsval *argv);
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protected:
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nsGenericHTMLContainerElement mInner;
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// Get the primary frame associated with this content
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nsresult GetPrimaryFrame(nsIFormControlFrame *&aFormControlFrame);
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// Get the select content element that contains this option
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nsresult GetSelect(nsIDOMHTMLSelectElement *&aSelectElement);
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};
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nsresult
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NS_NewHTMLOptionElement(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 nsHTMLOptionElement(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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nsHTMLOptionElement::nsHTMLOptionElement(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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}
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nsHTMLOptionElement::~nsHTMLOptionElement()
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{
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}
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// ISupports
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NS_IMPL_ADDREF(nsHTMLOptionElement)
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nsresult
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nsHTMLOptionElement::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(kIDOMHTMLOptionElementIID)) {
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*aInstancePtr = (void*)(nsIDOMHTMLOptionElement*) this;
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mRefCnt++;
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return NS_OK;
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}
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if (aIID.Equals(kIJSNativeInitializerIID)) {
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nsIJSNativeInitializer* tmp = this;
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*aInstancePtr = (void*) tmp;
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AddRef();
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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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// the option has a ref to the form, but not vice versa. The form can get to the
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// options via the select.
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NS_IMETHODIMP_(nsrefcnt)
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nsHTMLOptionElement::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 {
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return mRefCnt;
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}
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}
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NS_IMETHODIMP
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nsHTMLOptionElement::SetParent(nsIContent* aParent)
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{
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nsresult result = NS_OK;
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// Remove us from our old select element
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if (nsnull != mInner.mParent) {
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nsIDOMHTMLSelectElement* oldSelectElement = nsnull;
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GetSelect(oldSelectElement);
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if (nsnull != oldSelectElement) {
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nsISelectElement* select;
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if (NS_SUCCEEDED(oldSelectElement->QueryInterface(kISelectElementIID, (void**)&select))) {
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select->RemoveOption(this);
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NS_RELEASE(select);
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}
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NS_RELEASE(oldSelectElement);
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}
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}
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result = mInner.SetParent(aParent);
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if (nsnull != aParent) {
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nsIDOMHTMLSelectElement* newSelectElement = nsnull;
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GetSelect(newSelectElement);
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if (nsnull != newSelectElement) {
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nsISelectElement* select;
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if (NS_SUCCEEDED(newSelectElement->QueryInterface(kISelectElementIID, (void**)&select))) {
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select->AddOption(this);
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NS_RELEASE(select);
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}
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NS_RELEASE(newSelectElement);
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}
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}
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return result;
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}
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nsresult
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nsHTMLOptionElement::CloneNode(PRBool aDeep, nsIDOMNode** aReturn)
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{
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nsHTMLOptionElement* it = new nsHTMLOptionElement(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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nsHTMLOptionElement::GetForm(nsIDOMHTMLFormElement** aForm)
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{
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nsIDOMHTMLSelectElement* selectElement = nsnull;
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nsresult res = GetSelect(selectElement);
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if (NS_OK == res) {
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nsIFormControl* selectControl = nsnull;
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res = selectElement->QueryInterface(kIFormControlIID, (void**)&selectControl);
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NS_RELEASE(selectElement);
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if (NS_OK == res) {
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res = selectControl->GetForm(aForm);
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NS_RELEASE(selectControl);
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}
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}
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return res;
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}
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NS_IMETHODIMP
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nsHTMLOptionElement::GetSelected(PRBool* aValue)
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{
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nsIFormControlFrame* formControlFrame = nsnull;
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nsresult rv = GetPrimaryFrame(formControlFrame);
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if (NS_SUCCEEDED(rv)) {
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PRInt32 index;
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if (NS_OK == GetIndex(&index)) {
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nsString value;
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value.Append(index, 10); // Save the index in base 10
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formControlFrame->GetProperty(nsHTMLAtoms::selected, value);
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if (value == "1")
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*aValue = PR_TRUE;
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else
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*aValue = PR_FALSE;
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}
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}
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return rv;
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}
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//NS_IMPL_BOOL_ATTR(nsHTMLOptionElement, DefaultSelected, defaultselected)
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//NS_IMPL_INT_ATTR(nsHTMLOptionElement, Index, index)
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NS_IMPL_BOOL_ATTR(nsHTMLOptionElement, Disabled, disabled)
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NS_IMPL_STRING_ATTR(nsHTMLOptionElement, Label, label)
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NS_IMPL_STRING_ATTR(nsHTMLOptionElement, Value, value)
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NS_IMETHODIMP
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nsHTMLOptionElement::GetDefaultSelected(PRBool* aDefaultSelected)
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{
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nsHTMLValue val;
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nsresult rv = mInner.GetHTMLAttribute(nsHTMLAtoms::selected, val);
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*aDefaultSelected = (NS_CONTENT_ATTR_NOT_THERE != rv);
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return NS_OK;
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}
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NS_IMETHODIMP
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nsHTMLOptionElement::SetDefaultSelected(PRBool aDefaultSelected)
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{
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nsHTMLValue empty(eHTMLUnit_Empty);
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if (aDefaultSelected) {
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return mInner.SetHTMLAttribute(nsHTMLAtoms::selected, empty, PR_TRUE);
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} else {
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mInner.UnsetAttribute(kNameSpaceID_HTML, nsHTMLAtoms::selected, PR_TRUE);
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return NS_OK;
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}
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}
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NS_IMETHODIMP
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nsHTMLOptionElement::GetIndex(PRInt32* aIndex)
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{
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nsresult res = NS_ERROR_FAILURE;
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*aIndex = -1; // -1 indicates the index was not found
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// Get our nsIDOMNode interface to compare apples to apples.
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nsIDOMNode* thisNode = nsnull;
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if (NS_OK == this->QueryInterface(kIDOMNodeIID, (void**)&thisNode)) {
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// Get our containing select content object.
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nsIDOMHTMLSelectElement* selectElement = nsnull;
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if (NS_OK == GetSelect(selectElement)) {
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// Get the options from the select object.
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nsIDOMHTMLCollection* options = nsnull;
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if (NS_OK == selectElement->GetOptions(&options)) {
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// Walk the options to find out where we are in the list (ick, O(n))
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PRUint32 length = 0;
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options->GetLength(&length);
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nsIDOMNode* thisOption = nsnull;
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for (PRUint32 i = 0; i < length; i++) {
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options->Item(i, &thisOption);
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if (thisNode == thisOption) {
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res = NS_OK;
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*aIndex = i;
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break;
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}
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NS_IF_RELEASE(thisOption);
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}
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NS_RELEASE(options);
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}
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NS_RELEASE(selectElement);
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}
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NS_RELEASE(thisNode);
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}
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return res;
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}
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// This method does nothing for now as Index is supposed to be a read-only property
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// (See the DOM Errata)
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NS_IMETHODIMP
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nsHTMLOptionElement::SetIndex(PRInt32 aIndex)
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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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nsHTMLOptionElement::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::selected) {
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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::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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return NS_CONTENT_ATTR_NOT_THERE;
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}
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NS_IMETHODIMP
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nsHTMLOptionElement::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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nsIStyleContext* 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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nsHTMLOptionElement::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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nsHTMLOptionElement::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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nsHTMLOptionElement::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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NS_IMETHODIMP
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nsHTMLOptionElement::GetText(nsString& aText)
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{
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aText.SetLength(0);
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PRInt32 numNodes;
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nsresult rv = mInner.ChildCount(numNodes);
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if (NS_FAILED(rv)) {
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return rv;
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}
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for (PRInt32 i = 0; i < numNodes; i++) {
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nsIContent* node;
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rv = ChildAt(i, node);
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if (NS_SUCCEEDED(rv)) {
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nsIDOMText* domText = nsnull;
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rv = node->QueryInterface(kIDOMTextIID, (void**)&domText);
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if (NS_SUCCEEDED(rv) && domText) {
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rv = domText->GetData(aText);
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aText.CompressWhitespace(PR_TRUE, PR_TRUE);
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NS_RELEASE(domText);
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NS_RELEASE(node);
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break;
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}
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NS_RELEASE(node);
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}
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}
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return NS_OK;
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}
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// Options don't have frames - get the select content node
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// then call nsGenericHTMLElement::GetPrimaryFrame()
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nsresult nsHTMLOptionElement::GetPrimaryFrame(nsIFormControlFrame *&aIFormControlFrame)
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{
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nsIDOMHTMLSelectElement* selectElement = nsnull;
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nsresult res = GetSelect(selectElement);
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if (NS_OK == res) {
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nsIHTMLContent* selectContent = nsnull;
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nsresult gotContent = selectElement->QueryInterface(kIContentIID, (void**)&selectContent);
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NS_RELEASE(selectElement);
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if (NS_OK == gotContent) {
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res = nsGenericHTMLElement::GetPrimaryFrame(selectContent, aIFormControlFrame);
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NS_RELEASE(selectContent);
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}
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}
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return res;
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}
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// Get the select content element that contains this option
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nsresult nsHTMLOptionElement::GetSelect(nsIDOMHTMLSelectElement *&aSelectElement)
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{
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// Get the containing element (Either a select or an optGroup)
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nsIDOMNode* parentNode = nsnull;
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nsresult res = NS_ERROR_FAILURE;
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if (NS_OK == this->GetParentNode(&parentNode)) {
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aSelectElement = nsnull;
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if (nsnull != parentNode) {
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res = parentNode->QueryInterface(kIDOMHTMLSelectElementIID, (void**)&aSelectElement);
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// If we are in an OptGroup we need to GetParentNode again (at least once)
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if (NS_OK != res) {
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nsIDOMHTMLOptGroupElement* optgroupElement = nsnull;
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while (1) { // Be ready for nested OptGroups
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if ((nsnull != parentNode) && (NS_OK == parentNode->QueryInterface(kIDOMHTMLOptGroupElementIID, (void**)&optgroupElement))) {
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NS_RELEASE(optgroupElement); // Don't need the optgroup, just seeing if it IS one.
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nsIDOMNode* grandParentNode = nsnull;
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if (NS_OK == parentNode->GetParentNode(&grandParentNode)) {
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NS_RELEASE(parentNode);
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parentNode = grandParentNode;
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} else {
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break; // Break out if we can't get our parent (we're screwed)
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}
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} else {
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break; // Break out if not a OptGroup (hopefully we have a select)
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}
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}
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res = parentNode->QueryInterface(kIDOMHTMLSelectElementIID, (void**)&aSelectElement);
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}
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// We have a select if we're gonna get one, so let go of the generic node
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NS_RELEASE(parentNode);
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}
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}
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return res;
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}
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NS_IMETHODIMP
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nsHTMLOptionElement::Initialize(JSContext* aContext,
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|
PRUint32 argc,
|
|
jsval *argv)
|
|
{
|
|
nsresult result = NS_OK;
|
|
|
|
if (argc > 0) {
|
|
// The first (optional) parameter is the text of the option
|
|
JSString* jsstr = JS_ValueToString(aContext, argv[0]);
|
|
if (nsnull != jsstr) {
|
|
// Create a new text node and append it to the option
|
|
nsIContent* textNode;
|
|
nsITextContent* content;
|
|
|
|
result = NS_NewTextNode(&textNode);
|
|
if (NS_FAILED(result)) {
|
|
return result;
|
|
}
|
|
|
|
result = textNode->QueryInterface(kITextContentIID, (void**)&content);
|
|
if (NS_FAILED(result)) {
|
|
return result;
|
|
}
|
|
|
|
result = content->SetText(JS_GetStringChars(jsstr),
|
|
JS_GetStringLength(jsstr),
|
|
PR_FALSE);
|
|
NS_RELEASE(content);
|
|
if (NS_FAILED(result)) {
|
|
return result;
|
|
}
|
|
|
|
result = mInner.AppendChildTo(textNode, PR_FALSE);
|
|
if (NS_FAILED(result)) {
|
|
return result;
|
|
}
|
|
}
|
|
|
|
if (argc > 1) {
|
|
// The second (optional) parameter is the value of the option
|
|
jsstr = JS_ValueToString(aContext, argv[1]);
|
|
if (nsnull != jsstr) {
|
|
// Set the value attribute for this element
|
|
nsAutoString value(JS_GetStringChars(jsstr));
|
|
|
|
result = mInner.SetAttribute(kNameSpaceID_HTML,
|
|
nsHTMLAtoms::value,
|
|
value,
|
|
PR_FALSE);
|
|
if (NS_FAILED(result)) {
|
|
return result;
|
|
}
|
|
}
|
|
|
|
if (argc > 2) {
|
|
// The third (optional) parameter is the defaultSelected value
|
|
JSBool defaultSelected;
|
|
if ((JS_TRUE == JS_ValueToBoolean(aContext,
|
|
argv[2],
|
|
&defaultSelected)) &&
|
|
(JS_TRUE == defaultSelected)) {
|
|
nsHTMLValue empty(eHTMLUnit_Empty);
|
|
result = mInner.SetHTMLAttribute(nsHTMLAtoms::selected,
|
|
empty,
|
|
PR_FALSE);
|
|
if (NS_FAILED(result)) {
|
|
return result;
|
|
}
|
|
}
|
|
|
|
// XXX Since we don't store the selected state, we can't deal
|
|
// with the fourth (optional) parameter that is meant to specify
|
|
// whether the option element should be currently selected or
|
|
// not. Does anyone depend on this behavior?
|
|
}
|
|
}
|
|
}
|
|
|
|
return result;
|
|
}
|