ru.codeinside.adm.ui.GwsLazyTab.java Source code

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Here is the source code for ru.codeinside.adm.ui.GwsLazyTab.java

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/*
 * This Source Code Form is subject to the terms of the Mozilla Public
 * License, v. 2.0. If a copy of the MPL was not distributed with this
 * file, You can obtain one at http://mozilla.org/MPL/2.0/.
 * Copyright (c) 2014, MPL CodeInside http://codeinside.ru
 */

package ru.codeinside.adm.ui;

import com.vaadin.ui.CustomComponent;
import com.vaadin.ui.Label;
import com.vaadin.ui.TabSheet;
import com.vaadin.ui.themes.Reindeer;

final public class GwsLazyTab extends CustomComponent implements TabSheet.SelectedTabChangeListener {

    CustomTabSheet tabSheet;

    GwsLazyTab() {
        setSizeFull();
        setCompositionRoot(new Label("..."));
    }

    void lazyCreation() {
        tabSheet = new CustomTabSheet();
        tabSheet.addStyleName(Reindeer.TABSHEET_MINIMAL);
        tabSheet.setSizeFull();

        GwsClientsTab gwsClientsTab = new GwsClientsTab();
        ServicesTab servicesTab = new ServicesTab();
        tabSheet.addListener(gwsClientsTab);
        tabSheet.addListener(servicesTab);

        tabSheet.addTab(gwsClientsTab, "");
        tabSheet.addTab(servicesTab, "?");

        setCompositionRoot(tabSheet);
    }

    @Override
    public void selectedTabChange(TabSheet.SelectedTabChangeEvent event) {
        if (this == event.getTabSheet().getSelectedTab()) {
            if (tabSheet == null) {
                lazyCreation();
            }
            tabSheet.fireSelectedTabChange();
        }
    }

    final static class CustomTabSheet extends TabSheet {
        @Override
        public void fireSelectedTabChange() {
            super.fireSelectedTabChange();
        }
    }

}