213 lines
6.2 KiB
C++
213 lines
6.2 KiB
C++
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* ***** BEGIN LICENSE BLOCK *****
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* Version: MPL 1.1/GPL 2.0/LGPL 2.1
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*
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* The contents of this file are subject to the Mozilla Public License Version
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* 1.1 (the "License"); you may not use this file except in compliance with
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* the License. You may obtain a copy of the License at
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* http://www.mozilla.org/MPL/
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*
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* Software distributed under the License is distributed on an "AS IS" basis,
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* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
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* for the specific language governing rights and limitations under the
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* 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
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* Netscape Communications Corporation.
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* Portions created by the Initial Developer are Copyright (C) 1998
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* the Initial Developer. All Rights Reserved.
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*
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* Contributor(s):
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*
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* Alternatively, the contents of this file may be used under the terms of
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* either of the GNU General Public License Version 2 or later (the "GPL"),
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* or the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
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* in which case the provisions of the GPL or the LGPL are applicable instead
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* of those above. If you wish to allow use of your version of this file only
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* under the terms of either the GPL or the LGPL, and not to allow others to
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* use your version of this file under the terms of the MPL, indicate your
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* decision by deleting the provisions above and replace them with the notice
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* and other provisions required by the GPL or the LGPL. If you do not delete
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* the provisions above, a recipient may use your version of this file under
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* the terms of any one of the MPL, the GPL or the LGPL.
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*
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* ***** END LICENSE BLOCK ***** */
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#include "nsIDOMHTMLOptGroupElement.h"
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#include "nsIDOMEventTarget.h"
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#include "nsGenericHTMLElement.h"
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#include "nsGkAtoms.h"
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#include "nsStyleConsts.h"
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#include "nsPresContext.h"
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#include "nsIFrame.h"
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#include "nsIFormControlFrame.h"
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#include "nsIEventStateManager.h"
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#include "nsIDocument.h"
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#include "nsISelectElement.h"
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#include "nsIDOMHTMLSelectElement.h"
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#include "nsEventDispatcher.h"
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#include "nsHTMLSelectElement.h"
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/**
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* The implementation of <optgroup>
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*/
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class nsHTMLOptGroupElement : public nsGenericHTMLElement,
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public nsIDOMHTMLOptGroupElement
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{
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public:
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nsHTMLOptGroupElement(nsINodeInfo *aNodeInfo);
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virtual ~nsHTMLOptGroupElement();
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// nsISupports
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NS_DECL_ISUPPORTS_INHERITED
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// nsIDOMNode
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NS_FORWARD_NSIDOMNODE(nsGenericHTMLElement::)
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// nsIDOMElement
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NS_FORWARD_NSIDOMELEMENT(nsGenericHTMLElement::)
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// nsIDOMHTMLElement
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NS_FORWARD_NSIDOMHTMLELEMENT(nsGenericHTMLElement::)
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// nsIDOMHTMLOptGroupElement
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NS_DECL_NSIDOMHTMLOPTGROUPELEMENT
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// nsGenericElement
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virtual nsresult InsertChildAt(nsIContent* aKid, PRUint32 aIndex,
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PRBool aNotify);
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virtual nsresult RemoveChildAt(PRUint32 aIndex, PRBool aNotify);
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// nsIContent
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virtual nsresult PreHandleEvent(nsEventChainPreVisitor& aVisitor);
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virtual PRInt32 IntrinsicState() const;
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virtual nsresult Clone(nsINodeInfo *aNodeInfo, nsINode **aResult) const;
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protected:
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/**
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* Get the select content element that contains this option
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* @param aSelectElement the select element [OUT]
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*/
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nsIContent* GetSelect();
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};
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NS_IMPL_NS_NEW_HTML_ELEMENT(OptGroup)
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nsHTMLOptGroupElement::nsHTMLOptGroupElement(nsINodeInfo *aNodeInfo)
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: nsGenericHTMLElement(aNodeInfo)
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{
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}
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nsHTMLOptGroupElement::~nsHTMLOptGroupElement()
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{
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}
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NS_IMPL_ADDREF_INHERITED(nsHTMLOptGroupElement, nsGenericElement)
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NS_IMPL_RELEASE_INHERITED(nsHTMLOptGroupElement, nsGenericElement)
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// QueryInterface implementation for nsHTMLOptGroupElement
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NS_HTML_CONTENT_INTERFACE_TABLE_HEAD(nsHTMLOptGroupElement,
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nsGenericHTMLElement)
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NS_INTERFACE_TABLE_INHERITED1(nsHTMLOptGroupElement,
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nsIDOMHTMLOptGroupElement)
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NS_HTML_CONTENT_INTERFACE_TABLE_TAIL_CLASSINFO(HTMLOptGroupElement)
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NS_IMPL_ELEMENT_CLONE(nsHTMLOptGroupElement)
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NS_IMPL_BOOL_ATTR(nsHTMLOptGroupElement, Disabled, disabled)
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NS_IMPL_STRING_ATTR(nsHTMLOptGroupElement, Label, label)
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nsresult
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nsHTMLOptGroupElement::PreHandleEvent(nsEventChainPreVisitor& aVisitor)
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{
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aVisitor.mCanHandle = PR_FALSE;
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// Do not process any DOM events if the element is disabled
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// XXXsmaug This is not the right thing to do. But what is?
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PRBool disabled;
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nsresult rv = GetDisabled(&disabled);
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if (NS_FAILED(rv) || disabled) {
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return rv;
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}
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nsIFrame* frame = GetPrimaryFrame();
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if (frame) {
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const nsStyleUserInterface* uiStyle = frame->GetStyleUserInterface();
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if (uiStyle->mUserInput == NS_STYLE_USER_INPUT_NONE ||
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uiStyle->mUserInput == NS_STYLE_USER_INPUT_DISABLED) {
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return NS_OK;
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}
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}
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return nsGenericHTMLElement::PreHandleEvent(aVisitor);
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}
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nsIContent*
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nsHTMLOptGroupElement::GetSelect()
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{
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nsIContent* parent = this;
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while ((parent = parent->GetParent()) &&
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parent->IsNodeOfType(eHTML)) {
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if (parent->Tag() == nsGkAtoms::select) {
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return parent;
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}
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if (parent->Tag() != nsGkAtoms::optgroup) {
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break;
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}
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}
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return nsnull;
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}
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nsresult
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nsHTMLOptGroupElement::InsertChildAt(nsIContent* aKid,
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PRUint32 aIndex,
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PRBool aNotify)
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{
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nsSafeOptionListMutation safeMutation(GetSelect(), this, aKid, aIndex);
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nsresult rv = nsGenericHTMLElement::InsertChildAt(aKid, aIndex, aNotify);
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if (NS_FAILED(rv)) {
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safeMutation.MutationFailed();
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}
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return rv;
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}
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nsresult
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nsHTMLOptGroupElement::RemoveChildAt(PRUint32 aIndex, PRBool aNotify)
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{
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nsSafeOptionListMutation safeMutation(GetSelect(), this, nsnull, aIndex);
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nsresult rv = nsGenericHTMLElement::RemoveChildAt(aIndex, aNotify);
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if (NS_FAILED(rv)) {
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safeMutation.MutationFailed();
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}
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return rv;
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}
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PRInt32
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nsHTMLOptGroupElement::IntrinsicState() const
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{
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PRInt32 state = nsGenericHTMLElement::IntrinsicState();
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PRBool disabled;
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GetBoolAttr(nsGkAtoms::disabled, &disabled);
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if (disabled) {
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state |= NS_EVENT_STATE_DISABLED;
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state &= ~NS_EVENT_STATE_ENABLED;
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} else {
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state &= ~NS_EVENT_STATE_DISABLED;
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state |= NS_EVENT_STATE_ENABLED;
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}
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return state;
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}
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