bundles/addons/org.eclipse.apogy.addons.ros.ui/src/org/eclipse/apogy/addons/ros/ui/wizards/GenerateJavaClassForROSWizardDestinationPage.java

/*******************************************************************************
 * Copyright (c) 2018 Agence spatiale canadienne / Canadian Space Agency 
 * 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:
 *     Pierre Allard, 
 *     Regent L'Archeveque,
 *     Sebastien Gemme - initial API and implementation
 * SPDX-License-Identifier: EPL-1.0
 *     
 *******************************************************************************/
package org.eclipse.apogy.addons.ros.ui.wizards;

import java.util.Map;

import org.eclipse.jface.wizard.WizardPage;
import org.eclipse.swt.SWT;
import org.eclipse.swt.events.SelectionEvent;
import org.eclipse.swt.events.SelectionListener;
import org.eclipse.swt.layout.GridData;
import org.eclipse.swt.layout.GridLayout;
import org.eclipse.swt.widgets.Button;
import org.eclipse.swt.widgets.Composite;
import org.eclipse.swt.widgets.DirectoryDialog;
import org.eclipse.swt.widgets.Label;
import org.ros.EnvironmentVariables;

public class GenerateJavaClassForROSWizardDestinationPage extends WizardPage {
	protected static String path = System.getProperty("user.home");
	private Composite container;
	private Button browseButton = null;

	public GenerateJavaClassForROSWizardDestinationPage(String pageName) {
		super(pageName);
		setTitle("Generate ROS Java classes Settings.");
		setDescription("This wizard generates Java classes for a given ROS package.");

		String message = validate();
		setErrorMessage(message);
		setPageComplete(message == null);
	}

	public String getPath() {
		return path;
	}

	public String getROSPackagePath() {
		Map<String, String> env = System.getenv();
		String rosPackagePath = env.get(EnvironmentVariables.ROS_PACKAGE_PATH);
		return rosPackagePath;
	}

	@Override
	public void createControl(Composite parent) {
		this.container = new Composite(parent, SWT.NONE);
		GridLayout layout = new GridLayout(3, false);
		this.container.setLayout(layout);

		Label sourceROSPackagePathLabel = new Label(this.container, SWT.NONE);
		sourceROSPackagePathLabel.setText("ROS_PACKAGE_PATH = ");
		sourceROSPackagePathLabel.setToolTipText("The current value of the environment variable ROS_PACKAGE_PATH");

		Label sourceROSPackagePathDisplay = new Label(this.container, SWT.NONE);
		GridData sourceROSPackagePathGridData = new GridData(SWT.FILL, SWT.CENTER, true, false);
		sourceROSPackagePathDisplay.setLayoutData(sourceROSPackagePathGridData);

		if (getROSPackagePath() != null) {
			sourceROSPackagePathDisplay.setText(getROSPackagePath());
		} else {
			sourceROSPackagePathDisplay.setText("");
		}

		Label filler = new Label(this.container, SWT.NONE);
		filler.setText("");

		Label destinationFolderLabel = new Label(this.container, SWT.NONE);
		destinationFolderLabel.setText("Destination folder:");

		Label destinationFolderDisplay = new Label(this.container, SWT.NONE);
		GridData destinationFolderDisplayGridData = new GridData(SWT.FILL, SWT.CENTER, true, false);
		destinationFolderDisplay.setLayoutData(destinationFolderDisplayGridData);
		destinationFolderDisplay.setText(getPath());

		this.browseButton = new Button(this.container, SWT.PUSH);
		this.browseButton.setText("Browse...");
		this.browseButton.addSelectionListener(new SelectionListener() {
			@Override
			public void widgetSelected(SelectionEvent e) {
				DirectoryDialog directoryDialog = new DirectoryDialog(getShell(), SWT.NONE);
				directoryDialog.setFilterPath(path);
				directoryDialog.setMessage("ROS Java class output folder.");

				String newPath = directoryDialog.open();
				if (newPath != null) {
					path = newPath;
					destinationFolderDisplay.setText(newPath);
				}
			}

			@Override
			public void widgetDefaultSelected(SelectionEvent e) {
			}
		});

		setControl(this.container);
	}

	private String validate() {
		if (getROSPackagePath() == null) {
			return "ROS_PACKAGE_PATH environment variable is not defined !";
		} else if (getPath() == null) {
			return "No destination path specified !";
		} else {
			return null;
		}
	}
}