119 lines
4.7 KiB
C++
119 lines
4.7 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.
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*
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* The Initial Developer of the Original Code is
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* Netscape Communications.
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* Portions created by the Initial Developer are Copyright (C) 2001
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* the Initial Developer. All Rights Reserved.
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*
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* Contributor(s):
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* Vidur Apparao <vidur@netscape.com> (original author)
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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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/*
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* A class that handles loading and evaluation of <script> elements.
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*/
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#ifndef __nsScriptLoader_h__
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#define __nsScriptLoader_h__
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#include "nsCOMPtr.h"
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#include "nsIScriptLoader.h"
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#include "nsIScriptElement.h"
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#include "nsIScriptLoaderObserver.h"
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#include "nsIURI.h"
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#include "nsCOMArray.h"
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#include "nsIDocument.h"
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#include "nsIStreamLoader.h"
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class nsScriptLoadRequest;
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//////////////////////////////////////////////////////////////
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// Script loader implementation
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//////////////////////////////////////////////////////////////
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class nsScriptLoader : public nsIScriptLoader,
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public nsIStreamLoaderObserver
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{
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public:
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nsScriptLoader();
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virtual ~nsScriptLoader();
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NS_DECL_ISUPPORTS
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NS_DECL_NSISCRIPTLOADER
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NS_DECL_NSISTREAMLOADEROBSERVER
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/**
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* Convert the given buffer to a UTF-16 string.
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* @param aChannel Channel corresponding to the data. May be null.
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* @param aData The data to convert
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* @param aLength Length of the data
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* @param aHintCharset Hint for the character set (e.g., from a charset
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* attribute). May be the empty string.
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* @param aDocument Document which the data is loaded for. Must not be
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* null.
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* @param aString [out] Data as converted to unicode
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*/
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static nsresult ConvertToUTF16(nsIChannel* aChannel, const PRUint8* aData,
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PRUint32 aLength,
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const nsString& aHintCharset,
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nsIDocument* aDocument, nsString& aString);
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protected:
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PRBool InNonScriptingContainer(nsIScriptElement* aScriptElement);
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PRBool IsScriptEventHandler(nsIScriptElement* aScriptElement);
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void FireErrorNotification(nsresult aResult,
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nsIScriptElement* aElement,
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nsIScriptLoaderObserver* aObserver);
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nsresult ProcessRequest(nsScriptLoadRequest* aRequest);
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void FireScriptAvailable(nsresult aResult,
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nsScriptLoadRequest* aRequest,
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const nsAFlatString& aScript);
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void FireScriptEvaluated(nsresult aResult,
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nsScriptLoadRequest* aRequest);
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nsresult EvaluateScript(nsScriptLoadRequest* aRequest,
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const nsAFlatString& aScript);
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void ProcessPendingReqests();
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// The guts of ProcessScriptElement. If aFireErrorNotification is
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// true, FireErrorNotification should be called with the return
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// value of this method.
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nsresult DoProcessScriptElement(nsIScriptElement *aElement,
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nsIScriptLoaderObserver *aObserver,
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PRBool* aFireErrorNotification);
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nsIDocument* mDocument; // [WEAK]
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nsCOMArray<nsIScriptLoaderObserver> mObservers;
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nsCOMArray<nsScriptLoadRequest> mPendingRequests;
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nsCOMPtr<nsIScriptElement> mCurrentScript;
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PRBool mEnabled;
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};
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#endif //__nsScriptLoader_h__
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