TraceOperation.java

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package edu.rice.cs.hpc.traceviewer.operation;

import org.eclipse.core.commands.operations.AbstractOperation;
import org.eclipse.core.commands.operations.IOperationHistory;
import org.eclipse.core.commands.operations.IUndoContext;
import org.eclipse.core.commands.operations.IUndoableOperation;
import org.eclipse.ui.PlatformUI;

import edu.rice.cs.hpc.traceviewer.spaceTimeData.Frame;

/********************************************
 * 
 * generic trace operation
 *
 ********************************************/
public abstract class TraceOperation extends AbstractOperation {
    
    final static public IUndoContext traceContext = new TraceOperationContext();
    final static public IUndoContext undoableContext = new UndoableOperationContext();

    protected Frame frame;
    
    public TraceOperation(String label) {
        this(label,null);
    }
    
    public TraceOperation(String label, Frame frame) {
        super(label + " " + frame);
        addContext(traceContext);
        this.frame = frame;
    }

    public Frame getFrame() {
        return frame;
    }
    
    static public IOperationHistory getOperationHistory() {
        return PlatformUI.getWorkbench().getOperationSupport()
                .getOperationHistory();
    }
    
    public static IUndoableOperation[] getUndoHistory()
    {
        return getOperationHistory().getUndoHistory(undoableContext);
    }
    
    public static IUndoableOperation[] getRedoHistory()
    {
        return getOperationHistory().getRedoHistory(undoableContext);
    }
    
    public static void clear() 
    {
        TraceOperation.getOperationHistory().
            dispose(undoableContext, true, true, true);
    }
}