ScaleEditor.java example

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TuxGuitar-master
package org.herac.tuxguitar.gui.tools.scale;

import org.eclipse.swt.SWT;
import org.eclipse.swt.events.SelectionAdapter;
import org.eclipse.swt.events.SelectionEvent;
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.List;
import org.eclipse.swt.widgets.Shell;
import org.herac.tuxguitar.gui.TuxGuitar;
import org.herac.tuxguitar.gui.util.DialogUtils;

public class ScaleEditor {

  private GridData getButtonData() {
    GridData data = new GridData(SWT.FILL, SWT.FILL, true, true);
    data.minimumWidth = 80;
    data.minimumHeight = 25;
    return data;
  }

  public void show() {
    final Shell dialog = DialogUtils.newDialog(TuxGuitar.instance().getShell(),
        SWT.DIALOG_TRIM | SWT.APPLICATION_MODAL);
    dialog.setLayout(new GridLayout());
    dialog.setText(TuxGuitar.getProperty("scale.list"));
    dialog.setLayoutData(new GridData(SWT.FILL, SWT.FILL, true, true));
    // ----------------------------------------------------------------------
    Composite composite = new Composite(dialog, SWT.NONE);
    composite.setLayout(new GridLayout(2, false));
    composite.setLayoutData(new GridData(SWT.FILL, SWT.FILL, true, true));

    final List keys = new List(composite, SWT.BORDER | SWT.V_SCROLL);
    keys.setLayoutData(new GridData(50, 200));
    String[] keyNames = TuxGuitar.instance().getScaleManager().getKeyNames();
    for (int i = 0; i < keyNames.length; i++) {
      keys.add(keyNames[i]);
    }
    keys.select(TuxGuitar.instance().getScaleManager().getSelectionKey());

    final List scales = new List(composite, SWT.BORDER | SWT.V_SCROLL);
    scales.setLayoutData(new GridData(SWT.DEFAULT, 200));
    scales.add("None");
    String[] scaleNames = TuxGuitar.instance().getScaleManager()
        .getScaleNames();
    for (int i = 0; i < scaleNames.length; i++) {
      scales.add(scaleNames[i]);
    }
    scales
        .select(TuxGuitar.instance().getScaleManager().getSelectionIndex() + 1);

    // ------------------BUTTONS--------------------------
    Composite buttons = new Composite(dialog, SWT.NONE);
    buttons.setLayout(new GridLayout(2, false));
    buttons.setLayoutData(new GridData(SWT.END, SWT.FILL, true, true));

    final Button buttonOK = new Button(buttons, SWT.PUSH);
    buttonOK.setText(TuxGuitar.getProperty("ok"));
    buttonOK.setLayoutData(getButtonData());
    buttonOK.addSelectionListener(new SelectionAdapter() {
      public void widgetSelected(SelectionEvent arg0) {
        TuxGuitar.instance().getScaleManager().selectScale(
            (scales.getSelectionIndex() - 1), keys.getSelectionIndex());
        dialog.dispose();
      }
    });

    Button buttonCancel = new Button(buttons, SWT.PUSH);
    buttonCancel.setText(TuxGuitar.getProperty("cancel"));
    buttonCancel.setLayoutData(getButtonData());
    buttonCancel.addSelectionListener(new SelectionAdapter() {
      public void widgetSelected(SelectionEvent arg0) {
        dialog.dispose();
      }
    });

    dialog.setDefaultButton(buttonOK);

    DialogUtils.openDialog(dialog, DialogUtils.OPEN_STYLE_CENTER
        | DialogUtils.OPEN_STYLE_PACK | DialogUtils.OPEN_STYLE_WAIT);
  }
}