498 lines
16 KiB
C++
498 lines
16 KiB
C++
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-
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*
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* The contents of this file are subject to the Netscape Public
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* License Version 1.1 (the "License"); you may not use this file
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* except in compliance with the License. You may obtain a copy of
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* the License at http://www.mozilla.org/NPL/
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*
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* Software distributed under the License is distributed on an "AS
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* IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
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* implied. See the License for the specific language governing
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* rights and limitations under the License.
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*
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* The Original Code is Mozilla Communicator client code.
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*
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* The Initial Developer of the Original Code is Netscape Communications
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* Corporation. Portions created by Netscape are
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* Copyright (C) 1998 Netscape Communications Corporation. All
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* Rights Reserved.
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*
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* Contributor(s):
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*/
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#include "nsCOMPtr.h"
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#include "nsIDOMHTMLLabelElement.h"
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#include "nsIDOMHTMLFormElement.h"
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#include "nsIScriptObjectOwner.h"
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#include "nsIDOMEventReceiver.h"
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#include "nsIHTMLContent.h"
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#include "nsGenericHTMLElement.h"
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#include "nsHTMLAtoms.h"
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#include "nsHTMLIIDs.h"
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#include "nsIStyleContext.h"
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#include "nsIMutableStyleContext.h"
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#include "nsStyleConsts.h"
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#include "nsIPresContext.h"
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#include "nsIFormControl.h"
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#include "nsIForm.h"
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#include "nsIDOMHTMLDocument.h"
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#include "nsIDOMXULDocument.h"
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#include "nsIDocument.h"
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#include "nsISizeOfHandler.h"
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#include "nsIFormControlFrame.h"
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#include "nsIPresShell.h"
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static NS_DEFINE_IID(kIDOMHTMLLabelElementIID, NS_IDOMHTMLLABELELEMENT_IID);
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static NS_DEFINE_IID(kIDOMHTMLFormElementIID, NS_IDOMHTMLFORMELEMENT_IID);
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static NS_DEFINE_IID(kIFormIID, NS_IFORM_IID);
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static NS_DEFINE_IID(kIFormControlIID, NS_IFORMCONTROL_IID);
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class nsHTMLLabelElement : public nsIDOMHTMLLabelElement,
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public nsIJSScriptObject,
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public nsIHTMLContent,
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public nsIFormControl
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{
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public:
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nsHTMLLabelElement(nsINodeInfo *aNodeInfo);
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virtual ~nsHTMLLabelElement();
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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, because of the "htmlFor" attribute handling we can't
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// use the NS_IMPL_IDOMELEMENT_USING_GENERIC macro here...
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NS_IMETHOD GetTagName(nsAWritableString& aTagName) {
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return mInner.GetTagName(aTagName);
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}
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NS_IMETHOD GetAttribute(const nsAReadableString& aName, nsAWritableString& aReturn) {
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nsAutoString name(aName);
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if (name.EqualsIgnoreCase("htmlfor")) {
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return mInner.GetAttribute(NS_LITERAL_STRING("for"), aReturn);
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}
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return mInner.GetAttribute(aName, aReturn);
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}
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NS_IMETHOD SetAttribute(const nsAReadableString& aName, const nsAReadableString& aValue) {
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nsAutoString name(aName);
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if (name.EqualsIgnoreCase("htmlfor")) {
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return mInner.SetAttribute(NS_LITERAL_STRING("for"), aValue);
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}
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return mInner.SetAttribute(aName, aValue);
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}
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NS_IMETHOD RemoveAttribute(const nsAReadableString& aName) {
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nsAutoString name(aName);
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if (name.EqualsIgnoreCase("htmlfor")) {
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return mInner.RemoveAttribute(NS_LITERAL_STRING("for"));
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}
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return mInner.RemoveAttribute(aName);
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}
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NS_IMETHOD GetAttributeNode(const nsAReadableString& aName,
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nsIDOMAttr** aReturn) {
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nsAutoString name(aName);
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if (name.EqualsIgnoreCase("htmlfor")) {
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return mInner.GetAttributeNode(NS_LITERAL_STRING("for"), aReturn);
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}
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return mInner.GetAttributeNode(aName, aReturn);
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}
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NS_IMETHOD SetAttributeNode(nsIDOMAttr* aNewAttr, nsIDOMAttr** aReturn) {
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return mInner.SetAttributeNode(aNewAttr, aReturn);
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}
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NS_IMETHOD RemoveAttributeNode(nsIDOMAttr* aOldAttr, nsIDOMAttr** aReturn) {
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return mInner.RemoveAttributeNode(aOldAttr, aReturn);
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}
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NS_IMETHOD GetElementsByTagName(const nsAReadableString& aTagname,
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nsIDOMNodeList** aReturn) {
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return mInner.GetElementsByTagName(aTagname, aReturn);
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}
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NS_IMETHOD GetAttributeNS(const nsAReadableString& aNamespaceURI,
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const nsAReadableString& aLocalName, nsAWritableString& aReturn) {
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return mInner.GetAttributeNS(aNamespaceURI, aLocalName, aReturn);
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}
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NS_IMETHOD SetAttributeNS(const nsAReadableString& aNamespaceURI,
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const nsAReadableString& aQualifiedName,
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const nsAReadableString& aValue) {
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return mInner.SetAttributeNS(aNamespaceURI, aQualifiedName, aValue);
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}
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NS_IMETHOD RemoveAttributeNS(const nsAReadableString& aNamespaceURI,
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const nsAReadableString& aLocalName) {
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return mInner.RemoveAttributeNS(aNamespaceURI, aLocalName);
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}
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NS_IMETHOD GetAttributeNodeNS(const nsAReadableString& aNamespaceURI,
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const nsAReadableString& aLocalName,
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nsIDOMAttr** aReturn) {
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return mInner.GetAttributeNodeNS(aNamespaceURI, aLocalName, aReturn);
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}
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NS_IMETHOD SetAttributeNodeNS(nsIDOMAttr* aNewAttr, nsIDOMAttr** aReturn) {
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return mInner.SetAttributeNodeNS(aNewAttr, aReturn);
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}
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NS_IMETHOD GetElementsByTagNameNS(const nsAReadableString& aNamespaceURI,
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const nsAReadableString& aLocalName,
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nsIDOMNodeList** aReturn) {
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return mInner.GetElementsByTagNameNS(aNamespaceURI, aLocalName, aReturn);
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}
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NS_IMETHOD HasAttribute(const nsAReadableString& aName, PRBool* aReturn) {
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return HasAttribute(aName, aReturn);
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}
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NS_IMETHOD HasAttributeNS(const nsAReadableString& aNamespaceURI,
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const nsAReadableString& aLocalName, PRBool* aReturn) {
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return mInner.HasAttributeNS(aNamespaceURI, aLocalName, aReturn);
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}
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// nsIDOMHTMLElement
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NS_IMPL_IDOMHTMLELEMENT_USING_GENERIC(mInner)
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// nsIDOMHTMLLabelElement
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NS_DECL_IDOMHTMLLABELELEMENT
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NS_IMETHOD SetForm(nsIDOMHTMLFormElement* aForm);
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// nsIJSScriptObject
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NS_IMPL_IJSSCRIPTOBJECT_USING_GENERIC(mInner)
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// nsIContent
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NS_IMPL_ICONTENT_NO_SETPARENT_NO_SETDOCUMENT_USING_GENERIC(mInner)
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// nsIHTMLContent
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NS_IMPL_IHTMLCONTENT_USING_GENERIC(mInner)
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// nsIFormControl
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NS_IMETHOD GetType(PRInt32* aType) { return NS_FORM_LABEL; }
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NS_IMETHOD Init() { return NS_OK; }
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protected:
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nsGenericHTMLContainerFormElement mInner;
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nsIForm* mForm;
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};
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// construction, destruction
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nsresult
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NS_NewHTMLLabelElement(nsIHTMLContent** aInstancePtrResult,
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nsINodeInfo *aNodeInfo)
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{
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NS_ENSURE_ARG_POINTER(aInstancePtrResult);
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NS_ENSURE_ARG_POINTER(aNodeInfo);
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nsIHTMLContent* it = new nsHTMLLabelElement(aNodeInfo);
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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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nsHTMLLabelElement::nsHTMLLabelElement(nsINodeInfo *aNodeInfo)
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{
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NS_INIT_REFCNT();
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mInner.Init(this, aNodeInfo);
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mForm = nsnull;
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}
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nsHTMLLabelElement::~nsHTMLLabelElement()
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{
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// Null out form's pointer to us - no ref counting here!
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SetForm(nsnull);
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}
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// nsISupports
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NS_IMPL_ADDREF(nsHTMLLabelElement)
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NS_IMPL_RELEASE(nsHTMLLabelElement)
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nsresult
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nsHTMLLabelElement::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(kIDOMHTMLLabelElementIID)) {
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*aInstancePtr = (void*)(nsIDOMHTMLLabelElement*)this;
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NS_ADDREF_THIS();
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return NS_OK;
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}
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else if (aIID.Equals(kIFormControlIID)) {
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*aInstancePtr = (void*)(nsIFormControl*) this;
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NS_ADDREF_THIS();
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return NS_OK;
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}
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return NS_NOINTERFACE;
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}
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// nsIDOMHTMLLabelElement
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nsresult
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nsHTMLLabelElement::CloneNode(PRBool aDeep, nsIDOMNode** aReturn)
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{
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nsHTMLLabelElement* it = new nsHTMLLabelElement(mInner.mNodeInfo);
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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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nsCOMPtr<nsIDOMNode> kungFuDeathGrip(it);
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mInner.CopyInnerTo(this, &it->mInner, aDeep);
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return it->QueryInterface(kIDOMNodeIID, (void**) aReturn);
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}
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// nsIContent
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NS_IMETHODIMP
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nsHTMLLabelElement::SetParent(nsIContent* aParent)
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{
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return mInner.SetParentForFormControls(aParent, this, mForm);
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}
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NS_IMETHODIMP
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nsHTMLLabelElement::SetDocument(nsIDocument* aDocument, PRBool aDeep, PRBool aCompileEventHandlers)
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{
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return mInner.SetDocumentForFormControls(aDocument, aDeep, aCompileEventHandlers, this, mForm);
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}
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NS_IMETHODIMP
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nsHTMLLabelElement::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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nsHTMLLabelElement::SetForm(nsIDOMHTMLFormElement* aForm)
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{
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nsCOMPtr<nsIFormControl> formControl;
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nsresult result = QueryInterface(kIFormControlIID, getter_AddRefs(formControl));
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if (NS_FAILED(result)) formControl = nsnull;
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nsAutoString nameVal, idVal;
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mInner.GetAttribute(kNameSpaceID_None, nsHTMLAtoms::name, nameVal);
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mInner.GetAttribute(kNameSpaceID_None, nsHTMLAtoms::id, idVal);
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if (mForm && formControl) {
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mForm->RemoveElement(formControl);
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if (nameVal.Length())
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mForm->RemoveElementFromTable(this, nameVal);
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if (idVal.Length())
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mForm->RemoveElementFromTable(this, idVal);
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}
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if (aForm) {
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nsCOMPtr<nsIForm> theForm = do_QueryInterface(aForm, &result);
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mForm = theForm; // Even if we fail, update mForm (nsnull in failure)
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if ((NS_OK == result) && theForm) {
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if (formControl) {
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theForm->AddElement(formControl);
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if (nameVal.Length())
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theForm->AddElementToTable(this, nameVal);
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if (idVal.Length())
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theForm->AddElementToTable(this, idVal);
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}
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}
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} else {
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mForm = nsnull;
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}
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mInner.SetForm(mForm);
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return result;
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}
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NS_IMPL_STRING_ATTR(nsHTMLLabelElement, AccessKey, accesskey)
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//NS_IMPL_STRING_ATTR(nsHTMLLabelElement, HtmlFor, _for)
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NS_IMETHODIMP
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nsHTMLLabelElement::GetHtmlFor(nsAWritableString& aValue)
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{
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mInner.GetAttribute(kNameSpaceID_HTML, nsHTMLAtoms::_for, aValue);
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return NS_OK;
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}
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NS_IMETHODIMP
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nsHTMLLabelElement::SetHtmlFor(const nsAReadableString& aValue)
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{
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// trim leading and trailing whitespace
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static char whitespace[] = " \r\n\t";
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nsAutoString value(aValue);
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value.Trim(whitespace, PR_TRUE, PR_TRUE);
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return mInner.SetAttribute(kNameSpaceID_HTML, nsHTMLAtoms::_for, value, PR_TRUE);
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}
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NS_IMETHODIMP
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nsHTMLLabelElement::StringToAttribute(nsIAtom* aAttribute,
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const nsAReadableString& aValue,
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nsHTMLValue& aResult)
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{
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return NS_CONTENT_ATTR_NOT_THERE;
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}
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NS_IMETHODIMP
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nsHTMLLabelElement::AttributeToString(nsIAtom* aAttribute,
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const nsHTMLValue& aValue,
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nsAWritableString& aResult) const
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{
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return mInner.AttributeToString(aAttribute, aValue, aResult);
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}
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static void
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MapAttributesInto(const nsIHTMLMappedAttributes* aAttributes,
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nsIMutableStyleContext* aContext,
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nsIPresContext* aPresContext)
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{
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nsGenericHTMLElement::MapCommonAttributesInto(aAttributes, aContext, aPresContext);
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}
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NS_IMETHODIMP
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nsHTMLLabelElement::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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nsHTMLLabelElement::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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nsHTMLLabelElement::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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NS_ENSURE_ARG_POINTER(aEventStatus);
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nsresult rv = mInner.HandleDOMEvent(aPresContext, aEvent, aDOMEvent,
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aFlags, aEventStatus);
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// Now a little special trickery because we are a label:
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// We need to pass this event on to our child iff it is a focus,
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// keypress/up/dn, mouseclick/dblclick/up/down.
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if ((NS_OK == rv) && (NS_EVENT_FLAG_INIT & aFlags) &&
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((nsEventStatus_eIgnore == *aEventStatus) ||
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(nsEventStatus_eConsumeNoDefault == *aEventStatus)) ) {
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PRBool isFormElement = PR_FALSE;
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nsCOMPtr<nsIHTMLContent> node; // Node we are a label for
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switch (aEvent->message) {
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case NS_FOCUS_CONTENT:
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// Bug 49897: According to the spec, the following should not be passed
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// Bug 7554: Despite the spec, IE passes left click events, so for compatability:
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case NS_MOUSE_LEFT_CLICK:
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// case NS_MOUSE_LEFT_DOUBLECLICK:
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// case NS_MOUSE_LEFT_BUTTON_UP:
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// case NS_MOUSE_LEFT_BUTTON_DOWN:
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// case NS_MOUSE_MIDDLE_CLICK:
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// case NS_MOUSE_MIDDLE_DOUBLECLICK:
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// case NS_MOUSE_MIDDLE_BUTTON_UP:
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// case NS_MOUSE_MIDDLE_BUTTON_DOWN:
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// case NS_MOUSE_RIGHT_CLICK:
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// case NS_MOUSE_RIGHT_DOUBLECLICK:
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// case NS_MOUSE_RIGHT_BUTTON_UP:
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// case NS_MOUSE_RIGHT_BUTTON_DOWN:
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// case NS_KEY_PRESS:
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// case NS_KEY_UP:
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// case NS_KEY_DOWN:
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{
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// Get the element that this label is for
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nsAutoString elementId;
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rv = GetHtmlFor(elementId);
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if (NS_SUCCEEDED(rv) && elementId.Length()) { // --- We have a FOR attr
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nsCOMPtr<nsIDocument> iDoc;
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rv = mInner.GetDocument(*getter_AddRefs(iDoc));
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if (NS_SUCCEEDED(rv)) {
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nsCOMPtr<nsIDOMElement> domElement;
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// XXX This should be merged into nsIDocument
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nsCOMPtr<nsIDOMHTMLDocument> htmlDoc = do_QueryInterface(iDoc, &rv);
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if (NS_SUCCEEDED(rv) && htmlDoc) {
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rv = htmlDoc->GetElementById(elementId, getter_AddRefs(domElement));
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}
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#ifdef INCLUDE_XUL
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else {
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nsCOMPtr<nsIDOMXULDocument> xulDoc = do_QueryInterface(iDoc, &rv);
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if (NS_SUCCEEDED(rv) && xulDoc) {
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rv = xulDoc->GetElementById(elementId, getter_AddRefs(domElement));
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}
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}
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#endif // INCLUDE_XUL
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if (NS_SUCCEEDED(rv) && domElement) {
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// Get our grubby paws on the content interface
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node = do_QueryInterface(domElement, &rv);
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// Find out of this is a form element.
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if (NS_SUCCEEDED(rv)) {
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nsIFormControlFrame* control;
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nsresult gotFrame = nsGenericHTMLElement::GetPrimaryFrame(node, control);
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isFormElement = NS_SUCCEEDED(gotFrame) && control;
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}
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}
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}
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} else { // --- No FOR attribute, we are a label for our first child element
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PRInt32 numNodes;
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rv = mInner.ChildCount(numNodes);
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if (NS_SUCCEEDED(rv)) {
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nsCOMPtr<nsIContent> contNode;
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PRInt32 i;
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for (i = 0; NS_SUCCEEDED(rv) && !isFormElement && (i < numNodes); i++) {
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rv = ChildAt(i, *getter_AddRefs(contNode));
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if (NS_SUCCEEDED(rv) && contNode) {
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// We need to make sure this child is a form element
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nsresult isHTMLContent = PR_FALSE;
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node = do_QueryInterface(contNode, &isHTMLContent);
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if (NS_SUCCEEDED(isHTMLContent) && node) {
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// Find out of this is a form element.
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nsIFormControlFrame* control;
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nsresult gotFrame = nsGenericHTMLElement::GetPrimaryFrame(node, control);
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isFormElement = NS_SUCCEEDED(gotFrame) && control;
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}
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}
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}
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}
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}
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} // Close should handle
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|
} // Close switch
|
|
|
|
// If we found an element, pass along the event to it.
|
|
if (NS_SUCCEEDED(rv) && node) {
|
|
// Only pass along event if this is a form element
|
|
if (isFormElement) {
|
|
rv = node->HandleDOMEvent(aPresContext, aEvent, aDOMEvent, aFlags, aEventStatus);
|
|
}
|
|
}
|
|
} // Close trickery
|
|
return rv;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsHTMLLabelElement::SizeOf(nsISizeOfHandler* aSizer, PRUint32* aResult) const
|
|
{
|
|
if (!aResult) return NS_ERROR_NULL_POINTER;
|
|
#ifdef DEBUG
|
|
mInner.SizeOf(aSizer, aResult, sizeof(*this));
|
|
if (mForm) {
|
|
PRBool recorded;
|
|
aSizer->RecordObject(mForm, &recorded);
|
|
if (!recorded) {
|
|
PRUint32 formSize;
|
|
mForm->SizeOf(aSizer, &formSize);
|
|
aSizer->AddSize(nsHTMLAtoms::iform, formSize);
|
|
}
|
|
}
|
|
#endif
|
|
return NS_OK;
|
|
}
|