RemoveTracePatternWithNoArityHandler.java

package org.erlide.tracing.core.ui.menu;

import org.eclipse.core.commands.AbstractHandler;
import org.eclipse.core.commands.ExecutionEvent;
import org.eclipse.core.commands.ExecutionException;
import org.eclipse.jface.viewers.ISelection;
import org.eclipse.jface.viewers.ITreeSelection;
import org.eclipse.ui.PlatformUI;
import org.erlide.engine.ErlangEngine;
import org.erlide.engine.model.erlang.IErlFunction;
import org.erlide.tracing.core.TraceBackend;
import org.erlide.tracing.core.mvc.model.TracePattern;

public class RemoveTracePatternWithNoArityHandler extends AbstractHandler {

    @Override
    public Object execute(final ExecutionEvent event) throws ExecutionException {
        final ISelection selection = PlatformUI.getWorkbench().getActiveWorkbenchWindow()
                .getActivePage().getSelection();

        if (selection instanceof ITreeSelection) {

            final Object firstElement = ((ITreeSelection) selection).getFirstElement();

            if (firstElement instanceof IErlFunction) {
                final IErlFunction function = (IErlFunction) firstElement;
                final TracePattern tracePattern = new TracePattern(true);
                tracePattern.setFunctionName(function.getFunctionName());
                tracePattern.setModuleName(ErlangEngine.getInstance()
                        .getModelUtilService().getModule(function).getModuleName());
                TraceBackend.getInstance().removeTracePattern(tracePattern);
            }
        }
        return null;
    }
}