org.openeos.services.ui.vaadin.internal.OpenWindowCommand.java Source code

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Here is the source code for org.openeos.services.ui.vaadin.internal.OpenWindowCommand.java

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/**
 * Copyright 2014 Fernando Rincon Martin <frm.rincon@gmail.com>
 *
 * 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.openeos.services.ui.vaadin.internal;

import org.openeos.services.ui.UIApplication;
import org.openeos.services.ui.model.IWindowDefinition;
import org.openeos.services.ui.vaadin.IVaadinERPWindowFactory;
import org.openeos.vaadin.main.IUnoVaadinApplication;
import com.vaadin.ui.Component;
import com.vaadin.ui.ComponentContainer;
import com.vaadin.ui.ComponentContainer.ComponentDetachEvent;
import com.vaadin.ui.MenuBar.Command;
import com.vaadin.ui.MenuBar.MenuItem;
import com.vaadin.ui.TabSheet;
import com.vaadin.ui.TabSheet.Tab;

public class OpenWindowCommand implements Command {

    // TODO Check for memory allocation, window component is not destroy when tab is closed

    private static final long serialVersionUID = 1L;
    private IWindowDefinition window;
    private UIApplication<IUnoVaadinApplication> application;
    private Component windowComponent = null;

    private IVaadinERPWindowFactory windowFactory;

    public OpenWindowCommand(IWindowDefinition window, UIApplication<IUnoVaadinApplication> application,
            IVaadinERPWindowFactory windowFactory) {
        this.window = window;
        this.application = application;
        this.windowFactory = windowFactory;
    }

    @Override
    public void menuSelected(MenuItem selectedItem) {
        if (windowComponent == null)
            windowComponent = windowFactory.createWindowComponent(window, application);
        final TabSheet tabSheet = application.getConcreteApplication().getMainTabSheet();
        tabSheet.addListener(new ComponentContainer.ComponentDetachListener() {

            private static final long serialVersionUID = 1L;

            @Override
            public void componentDetachedFromContainer(ComponentDetachEvent event) {
                if (event.getDetachedComponent() == windowComponent) {
                    windowComponent = null;
                    tabSheet.removeListener(this);
                }
            }
        });
        Tab tab = tabSheet.addTab(windowComponent, window.getName());
        tab.setClosable(true);
        tab.setDescription(window.getDescription());
        tabSheet.setSelectedTab(tab);
    }

}