MessageDialog.java

/*
 * Copyright 2014-2016 CyberVision, Inc.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package org.kaaproject.kaa.server.admin.client.mvp.view.dialog;

import com.google.gwt.dom.client.Style.Overflow;
import com.google.gwt.dom.client.Style.WhiteSpace;
import com.google.gwt.event.dom.client.ClickEvent;
import com.google.gwt.event.dom.client.ClickHandler;
import com.google.gwt.event.logical.shared.CloseEvent;
import com.google.gwt.event.logical.shared.CloseHandler;
import com.google.gwt.user.client.Window;
import com.google.gwt.user.client.ui.Button;
import com.google.gwt.user.client.ui.PopupPanel;
import com.google.gwt.user.client.ui.VerticalPanel;

import org.kaaproject.avro.ui.gwt.client.widget.AlertPanel;
import org.kaaproject.avro.ui.gwt.client.widget.dialog.AvroUiDialog;
import org.kaaproject.kaa.server.admin.client.util.Utils;

public class MessageDialog extends AvroUiDialog {

  private Button okButton;

  private Listener listener;

  public MessageDialog(Listener listener, String title, String message) {
    this(listener, AlertPanel.Type.INFO, title, message);
  }

  /**
   * Instantiates a new MessageDialog.
   */
  public MessageDialog(Listener listener, AlertPanel.Type type, String title, String message) {
    super(false, true);
    setTitle(title);
    this.listener = listener;

    VerticalPanel dialogContents = new VerticalPanel();
    dialogContents.setSpacing(4);
    setWidget(dialogContents);

    AlertPanel messageLabel = new AlertPanel(type);
    messageLabel.getElement().getStyle().setWhiteSpace(WhiteSpace.PRE_WRAP);
    messageLabel.getElement().getStyle().setProperty("maxHeight", "400px");
    messageLabel.getElement().getStyle()
        .setProperty("maxWidth", Window.getClientWidth() * 2 / 3 + "px");
    messageLabel.getElement().getStyle().setOverflowY(Overflow.AUTO);
    messageLabel.setMessage(message);
    dialogContents.add(messageLabel);

    okButton = new Button(Utils.constants.ok(), new ClickHandler() {
      @Override
      public void onClick(ClickEvent event) {
        hide();
      }
    });

    addButton(okButton);

    this.addCloseHandler(new CloseHandler<PopupPanel>() {
      @Override
      public void onClose(CloseEvent<PopupPanel> event) {
        if (MessageDialog.this.listener != null) {
          MessageDialog.this.listener.onOk();
        }
      }
    });
  }

  public static MessageDialog showMessageDialog(String title, String message) {
    return showMessageDialog(AlertPanel.Type.INFO, title, message);
  }

  public static MessageDialog showMessageDialog(AlertPanel.Type type,
                                                String title, String message) {
    return showMessageDialog(null, type, title, message);
  }

  /**
   * Show message dialog.
   */
  public static MessageDialog showMessageDialog(Listener listener,
                                                AlertPanel.Type type,
                                                String title,
                                                String message) {
    MessageDialog dialog = new MessageDialog(listener, type, title, message);
    dialog.center();
    dialog.show();
    return dialog;
  }

  public interface Listener {

    public void onOk();

  }
}