NISScheduleDialog.java

package org.safehaus.penrose.studio.nis.dialog;

import org.eclipse.swt.widgets.*;
import org.eclipse.swt.SWT;
import org.eclipse.swt.events.SelectionAdapter;
import org.eclipse.swt.events.SelectionEvent;
import org.eclipse.swt.layout.GridLayout;
import org.eclipse.swt.layout.GridData;
import org.eclipse.swt.layout.RowLayout;
import org.eclipse.swt.graphics.Point;
import org.apache.log4j.Logger;
import org.safehaus.penrose.studio.PenroseImage;
import org.safehaus.penrose.studio.PenroseStudio;

/**
 * @author Endi S. Dewata
 */
public class NISScheduleDialog extends Dialog {

    Logger log = Logger.getLogger(getClass());

    public final static int CANCEL = 0;
    public final static int OK     = 1;

    Shell shell;

    Label nameText;
    Text scheduleText;

    int action;

    private String name;
    private String schedule;

    public NISScheduleDialog(Shell parent, int style) {
		super(parent, style);
    }

    public void open() {

        setText("NIS Schedule Editor");
        shell = new Shell(getParent(), SWT.DIALOG_TRIM | SWT.APPLICATION_MODAL | SWT.RESIZE);

        init();
        reset();

        Point size = new Point(600, 400);
        shell.setSize(size);

        Point l = getParent().getLocation();
        Point s = getParent().getSize();

        shell.setLocation(l.x + (s.x - size.x)/2, l.y + (s.y - size.y)/2);

        shell.setText(getText());
        shell.setImage(PenroseStudio.getImage(PenroseImage.LOGO));
        shell.open();

        Display display = getParent().getDisplay();
        while (!shell.isDisposed()) {
            if (!display.readAndDispatch()) display.sleep();
        }
    }

    public void init() {
        createControl(shell);
    }

    public void reset() {
        nameText.setText(name == null ? "" : name);
        scheduleText.setText(schedule == null ? "" : schedule);
    }

    public void createControl(Shell parent) {
        parent.setLayout(new GridLayout());

        Composite composite = createMainPanel(parent);
        composite.setLayoutData(new GridData(GridData.FILL_BOTH));

        composite = createButtonsPanel(parent);
        GridData gd = new GridData(GridData.FILL_HORIZONTAL);
        gd.horizontalAlignment = GridData.END;
        composite.setLayoutData(gd);
    }

    public Composite createMainPanel(Composite parent) {

        Composite composite = new Composite(parent, SWT.NONE);
        composite.setLayout(new GridLayout(2, false));

        Label nameLabel = new Label(composite, SWT.NONE);
        nameLabel.setText("Name:");
        GridData gd = new GridData();
        gd.widthHint = 100;
        nameLabel.setLayoutData(gd);

        nameText = new Label(composite, SWT.NONE);
        nameText.setLayoutData(new GridData(GridData.FILL_HORIZONTAL));

        Label scheduleLabel = new Label(composite, SWT.NONE);
        scheduleLabel.setText("Schedule:");
        scheduleLabel.setLayoutData(new GridData());

        scheduleText = new Text(composite, SWT.BORDER);
        scheduleText.setLayoutData(new GridData(GridData.FILL_HORIZONTAL));

        new Label(composite, SWT.NONE);

        Label example = new Label(composite, SWT.NONE);
        example.setLayoutData(new GridData(GridData.FILL_BOTH));

        example.setText(
                "\nCron Expression:\n"+
                " 1. Seconds\n" +
                " 2. Minutes\n" +
                " 3. Hours\n" +
                " 4. Day-of-Month\n" +
                " 5. Month\n" +
                " 6. Day-of-Week\n" +
                " 7. Year (optional)\n\n"+
                "Example:\n"+
                " - Everyday at 2:30am : 0 30 2 * * ?\n"+
                " - Every 5 minutes : 0 0/5 * * * ?"
        );

        return composite;
    }

    public Composite createButtonsPanel(Composite parent) {

        Composite composite = new Composite(parent, SWT.NONE);
        composite.setLayout(new RowLayout());

        Button cancelButton = new Button(composite, SWT.PUSH);
        cancelButton.setText("  Cancel  ");

        cancelButton.addSelectionListener(new SelectionAdapter() {
            public void widgetSelected(SelectionEvent e) {
                action = CANCEL;
                shell.close();
            }
        });

        Button okButton = new Button(composite, SWT.PUSH);
        okButton.setText("  OK  ");

        okButton.addSelectionListener(new SelectionAdapter() {
            public void widgetSelected(SelectionEvent e) {
                name = nameText.getText().equals("") ? null : nameText.getText();
                schedule = scheduleText.getText().equals("") ? null : scheduleText.getText();
                action = OK;
                shell.close();
            }
        });

        return composite;
    }

    public int getAction() {
        return action;
    }

    public void setAction(int action) {
        this.action = action;
    }

    public String getName() {
        return name;
    }

    public void setName(String name) {
        this.name = name;
    }

    public String getSchedule() {
        return schedule;
    }

    public void setSchedule(String schedule) {
        this.schedule = schedule;
    }
}