com.liferay.vaadin.poc.ui.PortletUI.java Source code

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Here is the source code for com.liferay.vaadin.poc.ui.PortletUI.java

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/**
 * Copyright (c) 2000-present Liferay, Inc. All rights reserved.
 *
 * This library is free software; you can redistribute it and/or modify it under
 * the terms of the GNU Lesser General Public License as published by the Free
 * Software Foundation; either version 2.1 of the License, or (at your option)
 * any later version.
 *
 * This library is distributed in the hope that it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
 * FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more
 * details.
 */
package com.liferay.vaadin.poc.ui;

import com.vaadin.annotations.Theme;
import com.vaadin.data.Property;
import com.vaadin.data.Property.ValueChangeEvent;
import com.vaadin.data.util.BeanItemContainer;
import com.vaadin.server.VaadinRequest;
import com.vaadin.ui.Button;
import com.vaadin.ui.Button.ClickEvent;
import com.vaadin.ui.Table;
import com.vaadin.ui.TextField;
import com.vaadin.ui.UI;
import com.vaadin.ui.VerticalLayout;

import java.util.Date;

@Theme("valo")
@SuppressWarnings("serial")
/**
 * @author Sampsa Sohlman
 */
public class PortletUI extends UI {
    @Override
    protected void init(VaadinRequest request) {
        final VerticalLayout layout = new VerticalLayout();
        layout.setWidth(100, Unit.PERCENTAGE);
        setContent(layout);
        notes = new BeanItemContainer<Note>(Note.class);

        notes.addBean(new Note(noteCounter++, new Date(), "example note"));

        table = new Table("Notes", notes);
        table.setVisibleColumns(new Object[] { "time", "text" });
        table.setPageLength(7);
        table.setBuffered(false);
        table.setSelectable(true);
        table.setWidth(100, Unit.PERCENTAGE);

        textField = new TextField("Text");
        textField.setWidth(100, Unit.PERCENTAGE);
        layout.addComponent(textField);

        Button addButton = new Button("Add");
        addButton.setWidth(100, Unit.PERCENTAGE);
        layout.addComponent(addButton);
        removeButton = new Button("Remove");
        removeButton.setWidth(100, Unit.PERCENTAGE);
        removeButton.setEnabled(false);
        layout.addComponent(removeButton);

        layout.addComponent(table);

        addButton.addClickListener((event) -> {
            notes.addBean(new Note(noteCounter++, new Date(), textField.getValue()));
        });

        removeButton.addClickListener((event) -> {
            if (selectedNote != null) {
                notes.removeItem(selectedNote);
                selectedNote = null;
            }
            removeButton.setEnabled(selectedNote != null);
        });

        // Handle selection change.
        table.addValueChangeListener((event) -> {
            selectedNote = (Note) table.getValue();
            removeButton.setEnabled(selectedNote != null);
        });
    }

    int noteCounter = 1;

    Table table;
    TextField textField;
    BeanItemContainer<Note> notes;
    Note selectedNote;
    Button removeButton;
}