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/* -*- Mode: C; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*-
*
* The contents of this file are subject to the Netscape 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/NPL/
*
* 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.org code.
*
* The Initial Developer of the Original Code is Netscape
* Communications Corporation. Portions created by Netscape are
* Copyright (C) 1998 Netscape Communications Corporation. All
* Rights Reserved.
*
* Contributor(s):
*/
package netscape.jsdebug;
import netscape.util.Vector;
import netscape.security.PrivilegeManager;
import netscape.security.ForbiddenTargetException;
/**
* This class provides access to SourceText items.
* <p>
* This class is meant to be a singleton and has a private constructor.
* Call the static <code>getSourceTextProvider()</code> to get this object.
* <p>
* Note that all functions use netscape.security.PrivilegeManager to verify
* that the caller has the "Debugger" privilege. The exception
* netscape.security.ForbiddenTargetException will be throw if this is
* not enabled.
*
* @author John Bandhauer
* @version 1.0
* @since 1.0
* @see netscape.security.PrivilegeManager
* @see netscape.security.ForbiddenTargetException
*/
public final class JSSourceTextProvider extends SourceTextProvider
{
private JSSourceTextProvider( long nativeContext )
{
_sourceTextVector = new Vector();
_nativeContext = nativeContext;
}
/**
* Get the SourceTextProvider object for the current VM.
* <p>
* @return the singleton SourceTextProvider
*/
public static synchronized SourceTextProvider getSourceTextProvider()
throws ForbiddenTargetException
{
PrivilegeManager.checkPrivilegeEnabled("Debugger");
if( null == _sourceTextProvider )
{
long nativeContext = DebugController.getDebugController().getNativeContext();
if( 0 != nativeContext )
_sourceTextProvider = new JSSourceTextProvider(nativeContext);
}
return _sourceTextProvider;
}
/**
* Get the SourceText item for the given URL
*/
public SourceTextItem findSourceTextItem( String url )
throws ForbiddenTargetException
{
PrivilegeManager.checkPrivilegeEnabled("Debugger");
return findSourceTextItem0(url);
}
// also called from native code...
private SourceTextItem findSourceTextItem0( String url )
{
synchronized( _sourceTextVector )
{
for (int i = 0; i < _sourceTextVector.size(); i++)
{
SourceTextItem src = (SourceTextItem) _sourceTextVector.elementAt(i);
if( src.getURL().equals(url) )
return src;
}
return null;
}
}
/**
* Return the vector of SourceTextItems.
* <p>
* This is NOT a copy. nor is it necessarily current
*/
public Vector getSourceTextVector()
throws ForbiddenTargetException
{
PrivilegeManager.checkPrivilegeEnabled("Debugger");
return _sourceTextVector;
}
/**
* Load the SourceText item for the given URL
* <p>
* <B>This is not guaranteed to be implemented</B>
*/
public synchronized SourceTextItem loadSourceTextItem( String url )
throws ForbiddenTargetException
{
PrivilegeManager.checkPrivilegeEnabled("Debugger");
return loadSourceTextItem0( url );
}
private native SourceTextItem loadSourceTextItem0( String url );
/**
* Refresh the vector to reflect any changes made in the
* underlying native system
*/
public synchronized native void refreshSourceTextVector();
private static SourceTextProvider _sourceTextProvider = null;
private Vector _sourceTextVector;
private long _nativeContext;
}
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