OpenURLAction.java

/*
 * Created on 17-dic-2005
 * 
 * TODO To change the template for this generated file go to Window -
 * Preferences - Java - Code Style - Code Templates
 */
package org.herac.tuxguitar.gui.actions.file;

import java.net.URL;

import org.eclipse.swt.SWT;
import org.eclipse.swt.events.SelectionAdapter;
import org.eclipse.swt.events.SelectionEvent;
import org.eclipse.swt.events.TypedEvent;
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.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.actions.Action;
import org.herac.tuxguitar.gui.actions.ActionLock;
import org.herac.tuxguitar.gui.helper.SyncThread;
import org.herac.tuxguitar.gui.util.ConfirmDialog;
import org.herac.tuxguitar.gui.util.DialogUtils;
import org.herac.tuxguitar.gui.util.MessageDialog;

/**
 * @author julian
 * 
 *         TODO To change the template for this generated type comment go to
 *         Window - Preferences - Java - Code Style - Code Templates
 */
public class OpenURLAction extends Action {

  protected class URLDialog {

    protected URL url;

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

    private GridData getMainData() {
      GridData data = new GridData(SWT.FILL, SWT.FILL, true, true);
      data.minimumWidth = 450;
      return data;
    }

    protected URL openDialog() {
      this.url = null;

      final Shell dialog = DialogUtils.newDialog(TuxGuitar.instance()
          .getShell(), SWT.DIALOG_TRIM | SWT.APPLICATION_MODAL);
      dialog.setLayout(new GridLayout());
      dialog.setText(TuxGuitar.getProperty("file.open-url"));

      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("file.open-url"));

      Composite composite = new Composite(group, SWT.NONE);
      composite.setLayout(new GridLayout(2, false));
      composite.setLayoutData(getMainData());

      final Label label = new Label(composite, SWT.LEFT);
      label.setText(TuxGuitar.getProperty("url") + ":");
      label.setLayoutData(new GridData(SWT.FILL, SWT.CENTER, false, true));

      final Text url = new Text(composite, SWT.BORDER | SWT.SINGLE);
      url.setLayoutData(new GridData(SWT.FILL, SWT.FILL, true, true));

      // ------------------BUTTONS--------------------------
      Composite buttons = new Composite(dialog, SWT.NONE);
      buttons.setLayout(new GridLayout(2, false));
      buttons.setLayoutData(new GridData(SWT.RIGHT, 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) {
          try {
            URLDialog.this.url = new URL(url.getText());
            dialog.dispose();
          } catch (Throwable throwable) {
            MessageDialog.errorMessage(throwable);
          }
        }
      });

      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 this.url;
    }
  }

  public static final String NAME = "action.file.open-url";

  public OpenURLAction() {
    super(NAME, AUTO_LOCK | AUTO_UPDATE | KEY_BINDING_AVAILABLE);
  }

  protected int execute(final TypedEvent event) {
    TuxGuitar.instance().getPlayer().reset();

    if (TuxGuitar.instance().getFileHistory().isUnsavedFile()) {
      ConfirmDialog confirm = new ConfirmDialog(TuxGuitar
          .getProperty("file.save-changes-question"));
      confirm.setDefaultStatus(ConfirmDialog.STATUS_CANCEL);
      int status = confirm.confirm(ConfirmDialog.BUTTON_YES
          | ConfirmDialog.BUTTON_NO | ConfirmDialog.BUTTON_CANCEL,
          ConfirmDialog.BUTTON_YES);
      if (status == ConfirmDialog.STATUS_CANCEL) {
        return AUTO_UNLOCK;
      }
      if (status == ConfirmDialog.STATUS_YES) {
        final String fileName = FileActionUtils.getFileName();
        if (fileName == null) {
          return AUTO_UNLOCK;
        }
        TuxGuitar.instance().loadCursor(SWT.CURSOR_WAIT);
        new Thread(new Runnable() {
          public void run() {
            if (!TuxGuitar.isDisposed()) {
              FileActionUtils.save(fileName);
              new SyncThread(new Runnable() {
                public void run() {
                  if (!TuxGuitar.isDisposed()) {
                    TuxGuitar.instance().loadCursor(SWT.CURSOR_ARROW);
                    openURL(event.widget.getData());
                  }
                }
              }).start();
            }
          }
        }).start();
        return 0;
      }
    }
    openURL(event.widget.getData());

    return 0;
  }

  protected URL getURL(Object data) {
    if (data instanceof URL) {
      return (URL) data;
    }
    return new URLDialog().openDialog();
  }

  protected void openURL(Object data) {
    final URL url = getURL(data);
    if (url == null) {
      ActionLock.unlock();
      return;
    }
    TuxGuitar.instance().loadCursor(SWT.CURSOR_WAIT);
    new Thread(new Runnable() {
      public void run() {
        if (!TuxGuitar.isDisposed()) {
          FileActionUtils.open(url);
          TuxGuitar.instance().loadCursor(SWT.CURSOR_ARROW);
          ActionLock.unlock();
        }
      }
    }).start();
  }
}