зеркало из https://github.com/mozilla/gecko-dev.git
135 строки
4.2 KiB
Java
135 строки
4.2 KiB
Java
/* -*- Mode: C; tab-width: 4; 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.org code.
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*
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* The Initial Developer of the Original Code is Netscape
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* Communications 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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package netscape.jsdebug;
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import netscape.util.Vector;
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import netscape.security.PrivilegeManager;
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import netscape.security.ForbiddenTargetException;
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/**
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* This class provides access to SourceText items.
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* <p>
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* This class is meant to be a singleton and has a private constructor.
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* Call the static <code>getSourceTextProvider()</code> to get this object.
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* <p>
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* Note that all functions use netscape.security.PrivilegeManager to verify
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* that the caller has the "Debugger" privilege. The exception
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* netscape.security.ForbiddenTargetException will be throw if this is
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* not enabled.
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*
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* @author John Bandhauer
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* @version 1.0
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* @since 1.0
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* @see netscape.security.PrivilegeManager
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* @see netscape.security.ForbiddenTargetException
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*/
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public final class JSSourceTextProvider extends SourceTextProvider
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{
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private JSSourceTextProvider( long nativeContext )
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{
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_sourceTextVector = new Vector();
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_nativeContext = nativeContext;
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}
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/**
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* Get the SourceTextProvider object for the current VM.
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* <p>
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* @return the singleton SourceTextProvider
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*/
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public static synchronized SourceTextProvider getSourceTextProvider()
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throws ForbiddenTargetException
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{
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PrivilegeManager.checkPrivilegeEnabled("Debugger");
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if( null == _sourceTextProvider )
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{
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long nativeContext = DebugController.getDebugController().getNativeContext();
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if( 0 != nativeContext )
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_sourceTextProvider = new JSSourceTextProvider(nativeContext);
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}
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return _sourceTextProvider;
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}
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/**
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* Get the SourceText item for the given URL
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*/
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public SourceTextItem findSourceTextItem( String url )
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throws ForbiddenTargetException
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{
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PrivilegeManager.checkPrivilegeEnabled("Debugger");
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return findSourceTextItem0(url);
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}
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// also called from native code...
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private SourceTextItem findSourceTextItem0( String url )
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{
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synchronized( _sourceTextVector )
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{
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for (int i = 0; i < _sourceTextVector.size(); i++)
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{
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SourceTextItem src = (SourceTextItem) _sourceTextVector.elementAt(i);
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if( src.getURL().equals(url) )
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return src;
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}
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return null;
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}
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}
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/**
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* Return the vector of SourceTextItems.
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* <p>
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* This is NOT a copy. nor is it necessarily current
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*/
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public Vector getSourceTextVector()
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throws ForbiddenTargetException
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{
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PrivilegeManager.checkPrivilegeEnabled("Debugger");
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return _sourceTextVector;
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}
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/**
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* Load the SourceText item for the given URL
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* <p>
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* <B>This is not guaranteed to be implemented</B>
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*/
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public synchronized SourceTextItem loadSourceTextItem( String url )
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throws ForbiddenTargetException
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{
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PrivilegeManager.checkPrivilegeEnabled("Debugger");
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return loadSourceTextItem0( url );
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}
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private native SourceTextItem loadSourceTextItem0( String url );
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/**
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* Refresh the vector to reflect any changes made in the
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* underlying native system
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*/
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public synchronized native void refreshSourceTextVector();
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private static SourceTextProvider _sourceTextProvider = null;
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private Vector _sourceTextVector;
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private long _nativeContext;
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}
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