/*******************************************************************************
 * Copyright (c) 2005, 2015 IBM Corporation 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:
 *     IBM Corporation - initial API and implementation
 *******************************************************************************/
package org.eclipse.ui.internal.dialogs;

import org.eclipse.jface.resource.ImageDescriptor;
import org.eclipse.jface.viewers.IStructuredSelection;
import org.eclipse.jface.wizard.Wizard;
import org.eclipse.ui.IWorkbench;
import org.eclipse.ui.internal.IWorkbenchGraphicConstants;
import org.eclipse.ui.internal.WorkbenchImages;
import org.eclipse.ui.internal.WorkbenchMessages;

/**
 * The import/export wizard allows users to choose whether to
 * show the import wizard or the export wizard.
 *
 * @since 3.2
 *
 */
public class ImportExportWizard extends Wizard {
	/**
	 * Constant used to to specify to the import/export wizard
	 * which page should initially be shown.
	 */
	public static final String IMPORT = "import";	//$NON-NLS-1$
	/**
	 * Constant used to to specify to the import/export wizard
	 * which page should initially be shown.
	 */
	public static final String EXPORT = "export";	//$NON-NLS-1$

    private IWorkbench workbench;
    private IStructuredSelection selection;
    private ImportExportPage importExportPage;
    private String page = null;

    /**
     * Create an import/export wizard and show the page
     * with the given id.
     *
     * @param pageId
     */
    public ImportExportWizard(String pageId){
    	page = pageId;
    }

    /**
     * Subclasses must implement this <code>IWizard</code> method
     * to perform any special finish processing for their wizard.
     */
    @Override
	public boolean performFinish() {
    	importExportPage.saveWidgetValues();
        return true;
    }

    /**
     * Creates the wizard's pages lazily.
     */
    @Override
	public void addPages() {
    	if (page.equals(IMPORT)) {
			importExportPage = new ImportPage(this.workbench, this.selection);
		} else if (page.equals(EXPORT)) {
			importExportPage = new ExportPage(this.workbench, this.selection);
		}
        if (importExportPage != null) {
			addPage(importExportPage);
		}
    }

    /**
     * Initializes the wizard.
     *
     * @param aWorkbench the workbench
     * @param currentSelection the current selectio
     */
    public void init(IWorkbench aWorkbench,
            IStructuredSelection currentSelection) {
        this.workbench = aWorkbench;
        this.selection = currentSelection;

        ImageDescriptor wizardBannerImage = null;
        if (IMPORT.equals(page)){
        	wizardBannerImage = WorkbenchImages
                .getImageDescriptor(IWorkbenchGraphicConstants.IMG_WIZBAN_IMPORT_WIZ);
        	setWindowTitle(WorkbenchMessages.ImportWizard_title);
        }
        else if (EXPORT.equals(page)){
        	wizardBannerImage = WorkbenchImages
                    .getImageDescriptor(IWorkbenchGraphicConstants.IMG_WIZBAN_EXPORT_WIZ);
        	setWindowTitle(WorkbenchMessages.ExportWizard_title);
        }
        if (wizardBannerImage != null) {
			setDefaultPageImageDescriptor(wizardBannerImage);
		}
        setNeedsProgressMonitor(true);
    }
}