de.topicmapslab.onotoa.search.handler.AbstractUseFinderHandler.java Source code

Introduction

Here is the source code for de.topicmapslab.onotoa.search.handler.AbstractUseFinderHandler.java

Source

/*******************************************************************************
 * Copyright (c) 2008, 2009 Topic Maps Lab 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:
 *     Hannes Niederhausen - initial API and implementation
 *******************************************************************************/
package de.topicmapslab.onotoa.search.handler;

import java.lang.reflect.InvocationTargetException;
import java.util.Collections;
import java.util.List;

import org.eclipse.core.commands.AbstractHandler;
import org.eclipse.core.runtime.IProgressMonitor;
import org.eclipse.jface.dialogs.ProgressMonitorDialog;
import org.eclipse.jface.operation.IRunnableWithProgress;
import org.eclipse.swt.widgets.Shell;

import de.topicmapslab.onotoa.search.dialogs.ResultDialog;
import de.topicmapslab.onotoa.search.model.tree.TreeNode;
import de.topicmapslab.onotoa.search.util.UseFinder;
import de.topicmapslab.tmcledit.model.TopicType;

/**
 * @author niederhausen
 *
 */
public abstract class AbstractUseFinderHandler extends AbstractHandler {

    /**
     * 
     */
    public AbstractUseFinderHandler() {
        super();
    }

    /**
     * @param shell
     * @param tt
     */
    protected void startSearch(Shell shell, TopicType tt) {
        ProgressMonitorDialog dlg = new ProgressMonitorDialog(shell);
        try {
            FindRunnable runnable = new FindRunnable(tt);
            dlg.run(false, false, runnable);

            ResultDialog resultDlg = new ResultDialog(shell, tt);
            resultDlg.setInput(runnable.getResult());

            resultDlg.open();

        } catch (Exception e) {
            throw new RuntimeException(e);
        }
    }

    final class FindRunnable implements IRunnableWithProgress {

        private final TopicType type;
        private List<TreeNode> result;

        /**
         * 
         */
        public FindRunnable(TopicType type) {
            this.type = type;
        }

        public void run(IProgressMonitor monitor) throws InvocationTargetException, InterruptedException {
            result = UseFinder.findUse(type, monitor);
        }

        /**
         * @return the result
         */
        public List<TreeNode> getResult() {
            if (result == null)
                return Collections.emptyList();
            return result;
        }
    }
}