org.vaadin.example.MyVaadinApplication.java Source code

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Here is the source code for org.vaadin.example.MyVaadinApplication.java

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/*
 * Copyright 2009 IT Mill Ltd.
 *
 * 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.vaadin.example;

import org.vaadin.addon.formbinder.PreCreatedFieldsHelper;

import com.vaadin.Application;
import com.vaadin.data.Item;
import com.vaadin.data.util.BeanItem;
import com.vaadin.ui.Button;
import com.vaadin.ui.Button.ClickEvent;
import com.vaadin.ui.Component;
import com.vaadin.ui.DefaultFieldFactory;
import com.vaadin.ui.Field;
import com.vaadin.ui.Form;
import com.vaadin.ui.HorizontalSplitPanel;
import com.vaadin.ui.VerticalLayout;
import com.vaadin.ui.Window;

/**
 * The Application's "main" class
 */
@SuppressWarnings("serial")
public class MyVaadinApplication extends Application {
    private Window window;

    private final MyLayout layout = new MyLayout();

    private Form form = new Form() {

        public void setItemDataSource(Item newDataSource) {
            // clear old stuff from "custom stuff slot"
            layout.getCustomStuff().removeAllComponents();
            super.setItemDataSource(newDataSource);
        };

        @Override
        protected void attachField(Object propertyId, Field field) {
            // NOP as fields are expected to be attached in view or to be
            // attached by the custom fieldfactory
        }

        @Override
        protected void detachField(Field field) {
            // NOP as fields are expected to be attached in view or to be
            // attached by the custom fieldfactory
        }
    };

    PreCreatedFieldsHelper preCreatedFieldsHelper = new PreCreatedFieldsHelper(layout) {

        @Override
        public Field createField(Item item, Object propertyId, Component uiContext) {
            Field field = super.createField(item, propertyId, uiContext);
            // field now contains relevant field from the layout if one existed
            if (field == null) {
                // No field found from layout, create on in "traditional
                // method and add to the slot reserved for custom fields in
                // the layout. Here defaultfieldfactory is used, but probably
                // some more intelligent in real world
                field = DefaultFieldFactory.get().createField(item, propertyId, uiContext);
                layout.getCustomStuff().addComponent(field);

            }
            return field;
        }

    };

    @Override
    public void init() {
        window = new Window("My Vaadin Application");
        setMainWindow(window);

        HorizontalSplitPanel horizontalSplitPanel = new HorizontalSplitPanel();
        horizontalSplitPanel.setSplitPosition(30);
        window.setContent(horizontalSplitPanel);

        VerticalLayout verticalLayout = new VerticalLayout();

        final PojoOne pojoOne = new PojoOne();
        pojoOne.setName("My pojo one");
        Button button = new Button("Edit pojo one");
        button.addListener(new Button.ClickListener() {
            public void buttonClick(ClickEvent event) {
                editPojo(pojoOne);
            }
        });
        verticalLayout.addComponent(button);

        final PojoTwo pojoTwo = new PojoTwo();
        button = new Button("Edit pojo two");
        pojoTwo.setName("My second pojo");

        button.addListener(new Button.ClickListener() {
            public void buttonClick(ClickEvent event) {
                editPojo(pojoTwo);
            }
        });
        verticalLayout.addComponent(button);

        horizontalSplitPanel.setFirstComponent(verticalLayout);

        form.setLayout(layout);
        form.setFormFieldFactory(preCreatedFieldsHelper);
        form.setVisible(false);
        horizontalSplitPanel.setSecondComponent(form);

    }

    @SuppressWarnings({ "unchecked", "rawtypes" })
    private void editPojo(Object pojo) {
        form.setItemDataSource(new BeanItem(pojo));
        form.setVisible(true);
    }
}