/*******************************************************************************
* Copyright (c) 2008 ARM Limited and others.
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License v1.0
* which accompanies this distribution, and is available at
* http://www.eclipse.org/legal/epl-v10.html
*
* Contributors:
* ARM Limited - Initial API and implementation
*******************************************************************************/
package org.eclipse.cdt.debug.internal.ui.disassembly.viewer;
import org.eclipse.cdt.debug.ui.disassembly.IDocumentPresentation;
import org.eclipse.cdt.debug.ui.disassembly.IDocumentUpdate;
import org.eclipse.debug.internal.core.commands.Request;
import org.eclipse.debug.internal.ui.viewers.model.provisional.IPresentationContext;
import org.eclipse.jface.viewers.TreePath;
public abstract class DocumentUpdate extends Request implements IDocumentUpdate {
private Object fRootElement;
private Object fBaseElement;
private Object fElement;
private IDocumentPresentation fPresentationContext;
private boolean fDone = false;
private boolean fStarted = false;
public DocumentUpdate( IDocumentPresentation presentationContext, Object rootElement, Object baseElement, Object element ) {
super();
fRootElement = rootElement;
fBaseElement = baseElement;
fElement = element;
fPresentationContext = presentationContext;
}
/* (non-Javadoc)
* @see com.arm.eclipse.rvd.ui.disassembly.IDocumentUpdate#getBaseElement()
*/
public Object getBaseElement() {
return fBaseElement;
}
/* (non-Javadoc)
* @see com.arm.eclipse.rvd.ui.disassembly.IDocumentUpdate#getRootElement()
*/
public Object getRootElement() {
return fRootElement;
}
/* (non-Javadoc)
* @see org.eclipse.debug.internal.ui.viewers.model.provisional.IViewerUpdate#getElement()
*/
public Object getElement() {
return fElement;
}
/* (non-Javadoc)
* @see org.eclipse.debug.internal.ui.viewers.model.provisional.IViewerUpdate#getElementPath()
*/
public TreePath getElementPath() {
// TODO Auto-generated method stub
return null;
}
/* (non-Javadoc)
* @see org.eclipse.debug.internal.ui.viewers.model.provisional.IViewerUpdate#getPresentationContext()
*/
public IPresentationContext getPresentationContext() {
return fPresentationContext;
}
/**
* Starts this request. Subclasses must override startRequest().
*/
final void start() {
synchronized( this ) {
if ( fStarted ) {
return;
}
fStarted = true;
}
if ( !isCanceled() ) {
startRequest();
}
else {
done();
}
}
/* (non-Javadoc)
* @see org.eclipse.debug.internal.core.commands.Request#done()
*/
@Override
public void done() {
synchronized( this ) {
if ( isDone() ) {
return;
}
fDone = true;
}
}
void setRootElement( Object rootElement ) {
fRootElement = rootElement;
}
void setBaseElement( Object baseElement ) {
fBaseElement = baseElement;
}
protected synchronized boolean isDone() {
return fDone;
}
/**
* Subclasses must override to initiate specific request types.
*/
abstract void startRequest();
/* (non-Javadoc)
* @see org.eclipse.debug.internal.ui.viewers.model.provisional.IViewerUpdate#getViewerInput()
*/
public Object getViewerInput() {
return null;
}
}