com.mycompany.project.views.GroupsView.java Source code

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Here is the source code for com.mycompany.project.views.GroupsView.java

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package com.mycompany.project.views;

import com.company.project.model.Group;
import com.mycompany.project.MyVaadinUI;
import com.mycompany.project.business.BusinessLogic;
import com.mycompany.project.components.GroupDetails;
import com.mycompany.project.components.NewGroupForm;
import com.vaadin.data.Property;
import com.vaadin.data.Property.ValueChangeListener;
import com.vaadin.data.util.BeanContainer;
import com.vaadin.navigator.View;
import com.vaadin.navigator.ViewChangeListener;
import com.vaadin.shared.ui.label.ContentMode;
import com.vaadin.ui.Button;
import com.vaadin.ui.Button.ClickListener;
import com.vaadin.ui.HorizontalLayout;
import com.vaadin.ui.Label;
import com.vaadin.ui.Panel;
import com.vaadin.ui.Table;
import com.vaadin.ui.Table.RowHeaderMode;
import com.vaadin.ui.VerticalLayout;
import com.vaadin.ui.Window;
import java.util.ArrayList;

/**
 *
 * @author vikrant.thakur
 */
public class GroupsView extends Panel implements View {

    public static final String NAME = "Groups"; // used by navigator for switching
    private final NewGroupForm newGroupForm = new NewGroupForm();
    private final Window window = new Window();
    private final BeanContainer<String, Group> beanContainer = new BeanContainer<String, Group>(Group.class);
    private final Table table = new Table();
    private final GroupDetails groupDetails = new GroupDetails();

    public GroupsView() {

        VerticalLayout mainVLayout = new VerticalLayout();
        mainVLayout.setMargin(true);
        mainVLayout.setSpacing(true);

        setContent(mainVLayout);

        // view header
        Label header = new Label("<div align=\"center\" style=\"font-size:12pt;\">Grupos</div>");
        header.setContentMode(ContentMode.HTML);

        mainVLayout.addComponent(header);

        // set window properties
        window.setWidth("400px");
        window.setCaption("New Group");
        window.setModal(true);
        window.setContent(newGroupForm);

        // add new cotact button
        Button btnNew = new Button("Add New Group");
        mainVLayout.addComponent(btnNew);

        // clicking the button should display the NewContactForm
        btnNew.addClickListener(new ClickListener() {

            @Override
            public void buttonClick(Button.ClickEvent event) {
                if (window.getParent() == null) {
                    getUI().addWindow(window);
                }

            }
        });

        //add a horozontal layout - left has a table, right has a ContactDetail component
        HorizontalLayout hLayout = new HorizontalLayout();
        hLayout.setSizeFull();
        hLayout.setSpacing(true);

        mainVLayout.addComponent(hLayout);

        //add a table

        table.setWidth("600px");
        table.setImmediate(true);
        hLayout.addComponent(table);

        // how does table get its data
        beanContainer.setBeanIdProperty("id");
        table.setContainerDataSource(beanContainer);

        //set columns
        final Object[] NATURAL_COL_ORDER = new Object[] { "name" };
        final String[] COL_HEADERS_ENGLISH = new String[] { "Name" };

        table.setSelectable(true);
        table.setColumnCollapsingAllowed(true);
        table.setRowHeaderMode(RowHeaderMode.INDEX);
        table.setVisibleColumns(NATURAL_COL_ORDER);
        table.setColumnHeaders(COL_HEADERS_ENGLISH);

        // selecting a table row should enable/disale the ContactDetails component
        table.addValueChangeListener(new ValueChangeListener() {

            @Override
            public void valueChange(Property.ValueChangeEvent event) {
                String groupId = (String) table.getValue();
                groupDetails.setGroupId(groupId);
            }
        });

        //add a ContactDetails component

        //        contactDetails.setWidth("500px");
        hLayout.addComponent(groupDetails);

        // let the table fill the entire remaining width
        hLayout.setExpandRatio(groupDetails, 1);
    }

    @Override
    public void enter(ViewChangeListener.ViewChangeEvent event) {
        load();
    }

    public void load() {
        beanContainer.removeAllItems();

        // get hold of the business logic
        BusinessLogic bl = ((MyVaadinUI) getUI()).getBusinessLogic();
        ArrayList<Group> groups = bl.getAllGroups();
        for (int i = 0; i < groups.size(); i++) {
            beanContainer.addAll(groups);
        }
    }

}