Back to index

lightning-sunbird  0.9+nobinonly
nsHTMLMapElement.cpp
Go to the documentation of this file.
00001 /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
00002 /* ***** BEGIN LICENSE BLOCK *****
00003  * Version: MPL 1.1/GPL 2.0/LGPL 2.1
00004  *
00005  * The contents of this file are subject to the Mozilla Public License Version
00006  * 1.1 (the "License"); you may not use this file except in compliance with
00007  * the License. You may obtain a copy of the License at
00008  * http://www.mozilla.org/MPL/
00009  *
00010  * Software distributed under the License is distributed on an "AS IS" basis,
00011  * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
00012  * for the specific language governing rights and limitations under the
00013  * License.
00014  *
00015  * The Original Code is Mozilla Communicator client code.
00016  *
00017  * The Initial Developer of the Original Code is
00018  * Netscape Communications Corporation.
00019  * Portions created by the Initial Developer are Copyright (C) 1998
00020  * the Initial Developer. All Rights Reserved.
00021  *
00022  * Contributor(s):
00023  *
00024  * Alternatively, the contents of this file may be used under the terms of
00025  * either of the GNU General Public License Version 2 or later (the "GPL"),
00026  * or the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
00027  * in which case the provisions of the GPL or the LGPL are applicable instead
00028  * of those above. If you wish to allow use of your version of this file only
00029  * under the terms of either the GPL or the LGPL, and not to allow others to
00030  * use your version of this file under the terms of the MPL, indicate your
00031  * decision by deleting the provisions above and replace them with the notice
00032  * and other provisions required by the GPL or the LGPL. If you do not delete
00033  * the provisions above, a recipient may use your version of this file under
00034  * the terms of any one of the MPL, the GPL or the LGPL.
00035  *
00036  * ***** END LICENSE BLOCK ***** */
00037 #include "nsIDOMHTMLMapElement.h"
00038 #include "nsIDOMEventReceiver.h"
00039 #include "nsGenericHTMLElement.h"
00040 #include "nsHTMLAtoms.h"
00041 #include "nsStyleConsts.h"
00042 #include "nsPresContext.h"
00043 #include "nsContentList.h"
00044 #include "nsIDocument.h"
00045 #include "nsIHTMLDocument.h"
00046 #include "nsCOMPtr.h"
00047 
00048 
00049 class nsHTMLMapElement : public nsGenericHTMLElement,
00050                          public nsIDOMHTMLMapElement
00051 {
00052 public:
00053   nsHTMLMapElement(nsINodeInfo *aNodeInfo);
00054   virtual ~nsHTMLMapElement();
00055 
00056   // nsISupports
00057   NS_DECL_ISUPPORTS_INHERITED
00058 
00059   // nsIDOMNode
00060   NS_FORWARD_NSIDOMNODE_NO_CLONENODE(nsGenericHTMLElement::)
00061 
00062   // nsIDOMElement
00063   NS_FORWARD_NSIDOMELEMENT(nsGenericHTMLElement::)
00064 
00065   // nsIDOMHTMLElement
00066   NS_FORWARD_NSIDOMHTMLELEMENT(nsGenericHTMLElement::)
00067 
00068   // nsIDOMHTMLMapElement
00069   NS_DECL_NSIDOMHTMLMAPELEMENT
00070 
00071   virtual nsresult BindToTree(nsIDocument* aDocument, nsIContent* aParent,
00072                               nsIContent* aBindingParent,
00073                               PRBool aCompileEventHandlers);
00074   virtual void UnbindFromTree(PRBool aDeep = PR_TRUE,
00075                               PRBool aNullParent = PR_TRUE);
00076 protected:
00077   nsRefPtr<nsContentList> mAreas;
00078 };
00079 
00080 
00081 NS_IMPL_NS_NEW_HTML_ELEMENT(Map)
00082 
00083 
00084 nsHTMLMapElement::nsHTMLMapElement(nsINodeInfo *aNodeInfo)
00085   : nsGenericHTMLElement(aNodeInfo)
00086 {
00087 }
00088 
00089 nsHTMLMapElement::~nsHTMLMapElement()
00090 {
00091   if (mAreas) {
00092     mAreas->RootDestroyed();
00093   }
00094 }
00095 
00096 
00097 NS_IMPL_ADDREF_INHERITED(nsHTMLMapElement, nsGenericElement) 
00098 NS_IMPL_RELEASE_INHERITED(nsHTMLMapElement, nsGenericElement) 
00099 
00100 
00101 // QueryInterface implementation for nsHTMLMapElement
00102 NS_HTML_CONTENT_INTERFACE_MAP_BEGIN(nsHTMLMapElement, nsGenericHTMLElement)
00103   NS_INTERFACE_MAP_ENTRY(nsIDOMHTMLMapElement)
00104   NS_INTERFACE_MAP_ENTRY_CONTENT_CLASSINFO(HTMLMapElement)
00105 NS_HTML_CONTENT_INTERFACE_MAP_END
00106 
00107 
00108 nsresult
00109 nsHTMLMapElement::BindToTree(nsIDocument* aDocument, nsIContent* aParent,
00110                              nsIContent* aBindingParent,
00111                              PRBool aCompileEventHandlers)
00112 {
00113   nsresult rv = nsGenericHTMLElement::BindToTree(aDocument, aParent,
00114                                                  aBindingParent,
00115                                                  aCompileEventHandlers);
00116   NS_ENSURE_SUCCESS(rv, rv);
00117 
00118   nsCOMPtr<nsIHTMLDocument> htmlDoc = do_QueryInterface(aDocument);
00119 
00120   if (htmlDoc) {
00121     htmlDoc->AddImageMap(this);
00122   }
00123 
00124   return rv;
00125 }
00126 
00127 void
00128 nsHTMLMapElement::UnbindFromTree(PRBool aDeep, PRBool aNullParent)
00129 {
00130   nsCOMPtr<nsIHTMLDocument> htmlDoc = do_QueryInterface(GetCurrentDoc());
00131 
00132   if (htmlDoc) {
00133     htmlDoc->RemoveImageMap(this);
00134   }
00135 
00136   nsGenericHTMLElement::UnbindFromTree(aDeep, aNullParent);
00137 }
00138 
00139 NS_IMPL_DOM_CLONENODE(nsHTMLMapElement)
00140 
00141 
00142 NS_IMETHODIMP
00143 nsHTMLMapElement::GetAreas(nsIDOMHTMLCollection** aAreas)
00144 {
00145   NS_ENSURE_ARG_POINTER(aAreas);
00146 
00147   if (!mAreas) {
00148     // Not using NS_GetContentList because this should not be cached
00149     mAreas = new nsContentList(GetDocument(),
00150                                nsHTMLAtoms::area,
00151                                mNodeInfo->NamespaceID(),
00152                                this,
00153                                PR_FALSE);
00154 
00155     if (!mAreas) {
00156       return NS_ERROR_OUT_OF_MEMORY;
00157     }
00158   }
00159 
00160   NS_ADDREF(*aAreas = mAreas);
00161   return NS_OK;
00162 }
00163 
00164 
00165 NS_IMPL_STRING_ATTR(nsHTMLMapElement, Name, name)