e3f2944049
- Plugged in style hint for changes to the <HR NOSHADE> attribute. git-svn-id: svn://10.0.0.236/trunk@20724 18797224-902f-48f8-a5cc-f745e15eee43
361 lines
11 KiB
C++
361 lines
11 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 "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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// 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(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(kIFormIID, NS_IFORM_IID);
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static NS_DEFINE_IID(kIFormControlFrameIID, NS_IFORMCONTROLFRAME_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 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_USING_GENERIC(mInner)
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// nsIHTMLContent
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NS_IMPL_IHTMLCONTENT_USING_GENERIC(mInner)
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protected:
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nsGenericHTMLContainerElement mInner;
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nsIForm* mForm;
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// Return the primary frame associated with this content
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nsresult GetPrimaryFrame(nsIFormControlFrame *&aFormControlFrame);
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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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mForm = nsnull;
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}
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nsHTMLOptionElement::~nsHTMLOptionElement()
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{
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if (mForm) {
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NS_RELEASE(mForm);
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}
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}
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// ISupports
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NS_IMETHODIMP
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nsHTMLOptionElement::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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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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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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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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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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nsHTMLOptionElement::GetSelected(PRBool* aValue)
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{
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nsIFormControlFrame* formControlFrame = nsnull;
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if (NS_OK == GetPrimaryFrame(formControlFrame)) {
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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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NS_RELEASE(formControlFrame);
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}
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return NS_OK;
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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::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(nsIHTMLAttributes* 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::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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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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nsIDOMNode* node = nsnull;
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nsresult result = mInner.GetFirstChild(&node);
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if ((NS_OK == result) && node) {
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nsIDOMText* domText = nsnull;
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result = node->QueryInterface(kIDOMTextIID, (void**)&domText);
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if ((NS_OK == result) && domText) {
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result = domText->GetData(aText);
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aText.CompressWhitespace(PR_TRUE, PR_TRUE);
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NS_RELEASE(domText);
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}
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NS_RELEASE(node);
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}
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return result;
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}
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NS_IMETHODIMP
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nsHTMLOptionElement::GetStyleHintForAttributeChange(
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const nsIAtom* aAttribute,
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PRInt32 *aHint) const
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{
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nsGenericHTMLElement::GetStyleHintForCommonAttributes(this, aAttribute, aHint);
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return NS_OK;
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}
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// Options don't have frames, so get the select frame.
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nsresult nsHTMLOptionElement::GetPrimaryFrame(nsIFormControlFrame *&aIFormControlFrame)
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{
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// Get the containing element.
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nsresult res = NS_NOINTERFACE;
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nsIDOMNode* parentNode = nsnull;
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nsresult gotParent = this->GetParentNode(&parentNode);
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if (NS_OK == gotParent) {
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nsIDOMHTMLSelectElement* selectElement = nsnull;
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// XXX Optgroups: if this is not NS_OK then we need to GetParentNode again.
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nsresult isSelect = parentNode->QueryInterface(kIDOMHTMLSelectElementIID, (void**)&selectElement);
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if (NS_OK == isSelect) {
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nsIContent* selectContent = nsnull;
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nsresult gotContent = selectElement->QueryInterface(kIContentIID, (void**)&selectContent);
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if (NS_OK == gotContent) {
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nsIDocument* doc = nsnull;
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// Get the document
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if (NS_OK == GetDocument(doc)) {
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// Get presentation shell 0
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nsIPresShell* presShell = doc->GetShellAt(0);
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if (nsnull != presShell) {
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nsIFrame *frame = nsnull;
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presShell->GetPrimaryFrameFor(selectContent, &frame);
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if (nsnull != frame) {
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res = frame->QueryInterface(kIFormControlFrameIID, (void**)&aIFormControlFrame);
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}
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NS_RELEASE(presShell);
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}
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NS_RELEASE(doc);
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}
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NS_RELEASE(selectContent);
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}
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NS_RELEASE(selectElement);
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}
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NS_RELEASE(parentNode);
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}
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return res;
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}
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