/*
 * Copyright (c) 2004-2011 Marco Maccaferri 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:
 *     Marco Maccaferri - initial API and implementation
 */

package org.eclipsetrader.ui.internal.charts.views;

import org.eclipse.jface.action.IAction;
import org.eclipse.jface.viewers.ISelection;
import org.eclipse.jface.viewers.IStructuredSelection;
import org.eclipse.ui.IWorkbenchWindow;
import org.eclipse.ui.IWorkbenchWindowActionDelegate;
import org.eclipsetrader.ui.charts.ChartRowViewItem;
import org.eclipsetrader.ui.charts.ChartViewItem;

public class LineToolAction implements IWorkbenchWindowActionDelegate {

    private IWorkbenchWindow window;
    private ChartRowViewItem rowViewItem;

    public LineToolAction() {
    }

    /* (non-Javadoc)
     * @see org.eclipse.ui.IWorkbenchWindowActionDelegate#dispose()
     */
    @Override
    public void dispose() {
    }

    /* (non-Javadoc)
     * @see org.eclipse.ui.IWorkbenchWindowActionDelegate#init(org.eclipse.ui.IWorkbenchWindow)
     */
    @Override
    public void init(IWorkbenchWindow window) {
        this.window = window;
    }

    /* (non-Javadoc)
     * @see org.eclipse.ui.IActionDelegate#run(org.eclipse.jface.action.IAction)
     */
    @Override
    public void run(IAction action) {
    }

    /* (non-Javadoc)
     * @see org.eclipse.ui.IActionDelegate#selectionChanged(org.eclipse.jface.action.IAction, org.eclipse.jface.viewers.ISelection)
     */
    @Override
    public void selectionChanged(IAction action, ISelection selection) {
        boolean enable = false;

        if (!selection.isEmpty() && selection instanceof IStructuredSelection) {
            IStructuredSelection structuredSelection = (IStructuredSelection) selection;
            if (structuredSelection.size() == 1) {
                Object o = structuredSelection.getFirstElement();
                if (o instanceof ChartViewItem) {
                    rowViewItem = (ChartRowViewItem) ((ChartViewItem) o).getParent();
                    enable = true;
                }
            }
        }

        action.setEnabled(enable);
    }
}