package org.safehaus.penrose.studio.partition.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.safehaus.penrose.studio.PenroseImage;
import org.safehaus.penrose.studio.PenroseStudio;

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

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

    Shell shell;

    Text nameText;

    String name;
    int action = CANCEL;

	public PartitionDialog(Shell parent, int style) {
		super(parent, style);

        shell = new Shell(getParent(), SWT.DIALOG_TRIM | SWT.APPLICATION_MODAL | SWT.RESIZE);
        createControl(shell);
    }

    public void open () {

        Point size = new Point(400, 200);
        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));

        reset();

        shell.open();

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

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

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

        Label nameLabel = new Label(composite, SWT.NONE);
        nameLabel.setText("Name:");

        GridData gd = new GridData(GridData.FILL);
        gd.widthHint = 100;
        nameLabel.setLayoutData(gd);

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

        Composite buttons = new Composite(parent, SWT.NONE);
        gd = new GridData(GridData.FILL_HORIZONTAL);
        gd.horizontalAlignment = GridData.END;
        buttons.setLayoutData(gd);
        buttons.setLayout(new RowLayout());

		Button saveButton = new Button(buttons, SWT.PUSH);
        saveButton.setText("Save");

		saveButton.addSelectionListener(new SelectionAdapter() {
			public void widgetSelected(SelectionEvent e) {
                name = "".equals(nameText.getText()) ? null : nameText.getText();
                action = OK;

                shell.close();
			}
		});

		Button cancelButton = new Button(buttons, SWT.PUSH);
        cancelButton.setText("Cancel");
		cancelButton.addSelectionListener(new SelectionAdapter() {
			public void widgetSelected(SelectionEvent e) {
                shell.close();
			}
		});
	}

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

    public String getName() {
        return name;
    }

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

    public int getAction() {
        return action;
    }

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