TGBrowserDataDialog.java

package org.herac.tuxguitar.gui.tools.browser.filesystem;

import java.io.File;

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.DirectoryDialog;
import org.eclipse.swt.widgets.Group;
import org.eclipse.swt.widgets.Label;
import org.eclipse.swt.widgets.Shell;
import org.eclipse.swt.widgets.Text;
import org.herac.tuxguitar.gui.TuxGuitar;
import org.herac.tuxguitar.gui.tools.browser.base.TGBrowserData;
import org.herac.tuxguitar.gui.util.DialogUtils;
import org.herac.tuxguitar.gui.util.MessageDialog;

public class TGBrowserDataDialog {

  private TGBrowserData data;

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

  public TGBrowserData getData() {
    return this.data;
  }

  private GridData getTextData(int span) {
    GridData data = new GridData(SWT.LEFT, SWT.CENTER, true, true, span, 1);
    data.minimumWidth = 350;
    return data;
  }

  protected boolean isBlank(String s) {
    return (s == null || s.length() == 0);
  }

  protected boolean isValidPath(String path) {
    if (!isBlank(path)) {
      File file = new File(path);
      return (file.exists() && file.isDirectory());
    }
    return false;
  }

  public TGBrowserData open(Shell parent) {
    final Shell dialog = DialogUtils.newDialog(parent, SWT.DIALOG_TRIM
        | SWT.APPLICATION_MODAL);
    dialog.setLayout(new GridLayout());
    dialog.setText(TuxGuitar.getProperty("browser.collection.fs.editor-title"));

    Group group = new Group(dialog, SWT.SHADOW_ETCHED_IN);
    group.setLayout(new GridLayout());
    group.setLayoutData(new GridData(SWT.FILL, SWT.FILL, true, true));
    group.setText(TuxGuitar.getProperty("browser.collection.fs.editor-tip"));

    Composite composite = new Composite(group, SWT.NONE);
    composite.setLayout(new GridLayout(3, false));
    composite.setLayoutData(new GridData(SWT.FILL, SWT.FILL, true, true));

    final Label titleLabel = new Label(composite, SWT.LEFT);
    titleLabel.setText(TuxGuitar.getProperty("browser.collection.fs.name"));
    titleLabel.setLayoutData(new GridData(SWT.LEFT, SWT.CENTER, true, true));

    final Text titleValue = new Text(composite, SWT.BORDER);
    titleValue.setLayoutData(getTextData(2));

    final Label pathLabel = new Label(composite, SWT.LEFT);
    pathLabel.setText(TuxGuitar.getProperty("browser.collection.fs.path"));
    pathLabel.setLayoutData(new GridData(SWT.LEFT, SWT.CENTER, true, true));

    final Text pathValue = new Text(composite, SWT.BORDER);
    pathValue.setLayoutData(getTextData(1));

    final Button pathChooser = new Button(composite, SWT.PUSH);
    pathChooser.setImage(TuxGuitar.instance().getIconManager().getFileOpen());
    pathChooser.addSelectionListener(new SelectionAdapter() {
      public void widgetSelected(SelectionEvent e) {
        DirectoryDialog directoryDialog = new DirectoryDialog(dialog);
        String selection = directoryDialog.open();
        if (selection != null) {
          pathValue.setText(selection);
        }
      }
    });

    // ------------------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) {
        String selectedTitle = titleValue.getText();
        String selectedPath = pathValue.getText();
        if (!isValidPath(selectedPath)) {
          MessageDialog.errorMessage(dialog, TuxGuitar
              .getProperty("browser.collection.fs.invalid-path"));
          return;
        }
        if (isBlank(selectedTitle)) {
          selectedTitle = selectedPath;
        }
        setData(new TGBrowserDataImpl(selectedTitle, selectedPath));
        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);

    return getData();
  }

  public void setData(TGBrowserData data) {
    this.data = data;
  }
}