at.rc.tacos.client.view.VehiclesSelectForm.java Source code

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Here is the source code for at.rc.tacos.client.view.VehiclesSelectForm.java

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/*******************************************************************************
 * Copyright (c) 2008, 2009 Internettechnik, FH JOANNEUM
 * http://www.fh-joanneum.at/itm
 * 
 *    Licenced under the GNU GENERAL PUBLIC LICENSE Version 2;
 *    You may obtain a copy of the License at
 *    http://www.gnu.org/licenses/gpl-2.0.txt
 * 
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *******************************************************************************/
package at.rc.tacos.client.view;

import org.eclipse.jface.dialogs.IMessageProvider;
import org.eclipse.jface.dialogs.TitleAreaDialog;
import org.eclipse.jface.viewers.IStructuredSelection;
import org.eclipse.jface.viewers.TableViewer;
import org.eclipse.swt.SWT;
import org.eclipse.swt.layout.GridData;
import org.eclipse.swt.layout.GridLayout;
import org.eclipse.swt.widgets.Composite;
import org.eclipse.swt.widgets.Control;
import org.eclipse.swt.widgets.MessageBox;
import org.eclipse.swt.widgets.Shell;

import at.rc.tacos.client.controller.VehicleEditAction;
import at.rc.tacos.client.modelManager.ModelFactory;
import at.rc.tacos.client.providers.VehicleContentProvider;
import at.rc.tacos.client.providers.VehicleLabelProvider;
import at.rc.tacos.factory.ImageFactory;
import at.rc.tacos.model.VehicleDetail;

public class VehiclesSelectForm extends TitleAreaDialog {

    // properties
    private TableViewer viewer;

    // the selected vehicle
    private VehicleDetail vehicleDetail;

    /**
     * Default class constructor
     * 
     * @param parentShell
     *            the parent shell
     */
    public VehiclesSelectForm(Shell parentShell) {
        super(parentShell);
        vehicleDetail = null;
    }

    /**
     * Creates the dialog's contents
     * 
     * @param parent
     *            the parent composite
     * @return Control
     */
    @Override
    protected Control createContents(Composite parent) {
        Control contents = super.createContents(parent);
        setTitle("Fahrzeugverwaltung");
        setMessage("Bitte whlen sie ein Fahrzeug aus", IMessageProvider.INFORMATION);
        setTitleImage(ImageFactory.getInstance().getRegisteredImage("application.logo"));
        return contents;
    }

    /**
     * Create contents of the window
     */
    @Override
    protected Control createDialogArea(Composite parent) {
        // setup the composite
        Composite composite = (Composite) super.createDialogArea(parent);
        // create the table
        createTableSection(composite);
        return composite;
    }

    /**
     * Creates the table to show the vehicles
     * 
     * @param parent
     *            the parent composite
     */
    private void createTableSection(Composite parent) {
        // create the table, set the providers and the input
        viewer = new TableViewer(parent, SWT.SINGLE | SWT.BORDER | SWT.H_SCROLL | SWT.V_SCROLL);
        viewer.setContentProvider(new VehicleContentProvider());
        viewer.setLabelProvider(new VehicleLabelProvider());
        viewer.setInput(ModelFactory.getInstance().getVehicleManager());
        viewer.getTable().setLayout(new GridLayout());
        viewer.getTable().setLayoutData(new GridData(GridData.FILL_BOTH));
    }

    /**
     * The user pressed the cancel button
     */
    @Override
    protected void cancelPressed() {
        MessageBox dialog = new MessageBox(getShell(), SWT.YES | SWT.NO | SWT.ICON_QUESTION);
        dialog.setText("Abbrechen");
        dialog.setMessage("Wollen Sie wirklich abbrechen?");
        // check the result
        if (dialog.open() != SWT.NO)
            getShell().close();
    }

    /**
     * The user pressed the ok button
     */
    @Override
    protected void okPressed() {
        // check the required fileds
        if (checkRequiredFields()) {
            // Open the vehicle form
            VehicleEditAction action = new VehicleEditAction(vehicleDetail);
            action.run();
            getShell().close();
            return;
        }
        // indicate a error
        getShell().getDisplay().beep();
    }

    /**
     * Helper method to determine wheter all fields are valid
     * 
     * @return true if all fields are valid, otherwise false
     */
    private boolean checkRequiredFields() {
        IStructuredSelection selection = (IStructuredSelection) viewer.getSelection();
        if (selection.getFirstElement() instanceof VehicleDetail) {
            vehicleDetail = (VehicleDetail) selection.getFirstElement();
            return true;
        } else {
            setErrorMessage("Sie mssen ein Fahrzeug auswhlen, welches Sie verwalten wollen");
            return false;
        }
    }
}