mirror of
https://gitlab.winehq.org/wine/wine-gecko.git
synced 2024-09-13 09:24:08 -07:00
150 lines
4.5 KiB
C++
150 lines
4.5 KiB
C++
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
|
|
/* ***** BEGIN LICENSE BLOCK *****
|
|
* Version: MPL 1.1/GPL 2.0/LGPL 2.1
|
|
*
|
|
* The contents of this file are subject to the Mozilla Public License Version
|
|
* 1.1 (the "License"); you may not use this file except in compliance with
|
|
* the License. You may obtain a copy of the License at
|
|
* http://www.mozilla.org/MPL/
|
|
*
|
|
* Software distributed under the License is distributed on an "AS IS" basis,
|
|
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
|
|
* for the specific language governing rights and limitations under the
|
|
* License.
|
|
*
|
|
* The Original Code is Mozilla Communicator
|
|
*
|
|
* The Initial Developer of the Original Code is
|
|
* Netscape Communications
|
|
* Portions created by the Initial Developer are Copyright (C) 2002
|
|
* the Initial Developer. All Rights Reserved.
|
|
*
|
|
* Contributor(s):
|
|
* Rick Potts <rpotts@netscape.com>
|
|
*
|
|
* Alternatively, the contents of this file may be used under the terms of
|
|
* either the GNU General Public License Version 2 or later (the "GPL"), or
|
|
* the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
|
|
* in which case the provisions of the GPL or the LGPL are applicable instead
|
|
* of those above. If you wish to allow use of your version of this file only
|
|
* under the terms of either the GPL or the LGPL, and not to allow others to
|
|
* use your version of this file under the terms of the MPL, indicate your
|
|
* decision by deleting the provisions above and replace them with the notice
|
|
* and other provisions required by the GPL or the LGPL. If you do not delete
|
|
* the provisions above, a recipient may use your version of this file under
|
|
* the terms of any one of the MPL, the GPL or the LGPL.
|
|
*
|
|
* ***** END LICENSE BLOCK ***** */
|
|
|
|
/*
|
|
* Class that allows finding an event handler <script> node (one using
|
|
* FOR="....") for a given event and dispatching the event to that
|
|
* node.
|
|
*/
|
|
|
|
#include "nsScriptEventManager.h"
|
|
|
|
#include "nsString.h"
|
|
#include "nsReadableUtils.h"
|
|
|
|
#include "nsIDOMNode.h"
|
|
#include "nsIDOMHTMLScriptElement.h"
|
|
#include "nsIDOMHTMLObjectElement.h"
|
|
#include "nsIDOMDocument.h"
|
|
|
|
#include "nsIScriptElement.h"
|
|
|
|
#include "nsIScriptEventHandler.h"
|
|
#include "nsIDocument.h"
|
|
|
|
nsScriptEventManager::nsScriptEventManager(nsIDOMDocument *aDocument)
|
|
{
|
|
nsresult rv;
|
|
|
|
|
|
rv = aDocument->GetElementsByTagName(NS_LITERAL_STRING("script"),
|
|
getter_AddRefs(mScriptElements));
|
|
|
|
}
|
|
|
|
|
|
nsScriptEventManager::~nsScriptEventManager()
|
|
{
|
|
}
|
|
|
|
|
|
NS_IMPL_ISUPPORTS1(nsScriptEventManager, nsIScriptEventManager)
|
|
|
|
|
|
NS_IMETHODIMP
|
|
nsScriptEventManager::FindEventHandler(const nsAString &aObjectName,
|
|
const nsAString &aEventName,
|
|
PRUint32 aArgCount,
|
|
nsISupports **aScriptHandler)
|
|
{
|
|
nsresult rv;
|
|
|
|
if (!mScriptElements) {
|
|
return NS_ERROR_FAILURE;
|
|
}
|
|
|
|
// Null out the return value...
|
|
if (!aScriptHandler) {
|
|
return NS_ERROR_NULL_POINTER;
|
|
}
|
|
*aScriptHandler = nsnull;
|
|
|
|
// Get the number of script elements in the current document...
|
|
PRUint32 count = 0;
|
|
rv = mScriptElements->GetLength(&count);
|
|
if (NS_FAILED(rv)) {
|
|
return rv;
|
|
}
|
|
|
|
//
|
|
// Iterate over all of the SCRIPT elements looking for a handler.
|
|
//
|
|
// Walk the list backwards in order to pick up the most recently
|
|
// defined script handler (if more than one is present)...
|
|
//
|
|
nsCOMPtr<nsIDOMNode> node;
|
|
nsCOMPtr<nsIScriptEventHandler> handler;
|
|
|
|
while (count--) {
|
|
rv = mScriptElements->Item(count, getter_AddRefs(node));
|
|
if (NS_FAILED(rv)) break;
|
|
|
|
// Check if the SCRIPT element is an event handler.
|
|
handler = do_QueryInterface(node, &rv);
|
|
if (NS_FAILED(rv)) continue;
|
|
|
|
PRBool bFound = PR_FALSE;
|
|
rv = handler->IsSameEvent(aObjectName, aEventName, aArgCount, &bFound);
|
|
|
|
if (NS_SUCCEEDED(rv) && bFound) {
|
|
*aScriptHandler = handler;
|
|
NS_ADDREF(*aScriptHandler);
|
|
|
|
return NS_OK;
|
|
}
|
|
}
|
|
|
|
// Errors just fall of the end and return 'rv'
|
|
return rv;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsScriptEventManager::InvokeEventHandler(nsISupports *aHandler,
|
|
nsISupports *aTargetObject,
|
|
void * aArgs,
|
|
PRUint32 aArgCount)
|
|
{
|
|
nsCOMPtr<nsIScriptEventHandler> handler(do_QueryInterface(aHandler));
|
|
|
|
if (!handler) {
|
|
return NS_ERROR_FAILURE;
|
|
}
|
|
|
|
return handler->Invoke(aTargetObject, aArgs, aArgCount);
|
|
}
|