FileEditorPartListener.java

/*******************************************************************************
 * Copyright (c) 2010-2012, Zoltan Ujhelyi, Tamas Szabo, Istvan Rath and Daniel Varro
 * 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:
 *   Zoltan Ujhelyi, Tamas Szabo - initial API and implementation
 *******************************************************************************/
package org.eclipse.incquery.tooling.ui.queryexplorer.util;

import org.eclipse.core.resources.IFile;
import org.eclipse.incquery.tooling.ui.queryexplorer.handlers.RuntimeMatcherUnRegistrator;
import org.eclipse.jface.dialogs.MessageDialog;
import org.eclipse.ui.IEditorInput;
import org.eclipse.ui.IEditorPart;
import org.eclipse.ui.IWorkbenchPart;
import org.eclipse.ui.part.FileEditorInput;

/**
 * The PartListener is used to observe EditorPart close actions.
 * 
 * @author Tamas Szabo
 */
public class FileEditorPartListener extends BasePartListener {

    private final static String dialogTitle = ".eiq file editor closing";

    @Override
    public void partClosed(IWorkbenchPart part) {
        if (part instanceof IEditorPart) {
            IEditorPart closedEditor = (IEditorPart) part;
            IEditorInput editorInput = closedEditor.getEditorInput();

            if (editorInput instanceof FileEditorInput) {
                IFile file = ((FileEditorInput) editorInput).getFile();

                if (file != null && file.getFileExtension().matches("eiq")
                        && PatternRegistry.getInstance().getFiles().contains(file)) {
                    String question = "There are patterns (from file named '" + file.getName()
                            + "') registered in the Query Explorer.\nWould you like to unregister them?";
                    boolean answer = MessageDialog.openQuestion(closedEditor.getSite().getShell(), dialogTitle,
                            question);
                    if (answer) {
                        RuntimeMatcherUnRegistrator job = new RuntimeMatcherUnRegistrator(file);
                        job.run();
                    }
                }
            }
        }
    }

}