org.s23m.cell.editor.semanticdomain.ui.components.field.SetField.java Source code

Introduction

Here is the source code for org.s23m.cell.editor.semanticdomain.ui.components.field.SetField.java

Source

/* ***** BEGIN LICENSE BLOCK *****
 * Version: MPL 1.1
 *
 * The contents of this file are subject to the Mozilla Public License Version
 * 1.1 (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.mozilla.org/MPL/
 *
 * Software distributed under the License is distributed on an "AS IS" basis,
 * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
 * for the specific language governing rights and limitations under the
 * License.
 *
 * The Original Code is S23M.
 *
 * The Initial Developer of the Original Code is
 * The S23M Foundation.
 * Portions created by the Initial Developer are
 * Copyright (C) 2012 The S23M Foundation.
 * All Rights Reserved.
 *
 * Contributor(s):
 * Chul Kim
 * Andrew Shewring
 *
 * ***** END LICENSE BLOCK ***** */

package org.s23m.cell.editor.semanticdomain.ui.components.field;

import org.s23m.cell.editor.semanticdomain.data.SetData;
import org.s23m.cell.editor.semanticdomain.data.TreeNode;
import org.vaadin.addon.customfield.CustomField;

import com.vaadin.data.Property;
import com.vaadin.event.DataBoundTransferable;
import com.vaadin.event.dd.DragAndDropEvent;
import com.vaadin.event.dd.DropHandler;
import com.vaadin.event.dd.acceptcriteria.AcceptAll;
import com.vaadin.event.dd.acceptcriteria.AcceptCriterion;
import com.vaadin.ui.DragAndDropWrapper;
import com.vaadin.ui.Label;
import com.vaadin.ui.TextField;
import com.vaadin.ui.VerticalLayout;

@SuppressWarnings("serial")
public class SetField extends CustomField {

    private static final String FIELD_WIDTH = "90%";
    private final SetData setData;
    private final String caption;
    private final boolean acceptDrop;
    private TextField txtField;

    public SetField(final String caption, final SetData setData, final boolean isRequired,
            final boolean acceptDrop) {
        this.caption = caption;
        this.setData = setData;
        this.acceptDrop = acceptDrop;
        setValue(setData);
        init();
        setRequired(isRequired);
        if (isRequired) {
            setRequiredError(caption + " is a required field.");
        }
    }

    @Override
    public void commit() {
        validate();
    }

    private void init() {
        final VerticalLayout mainLayout = new VerticalLayout();
        final Label lbl = new Label(caption);
        mainLayout.addComponent(lbl);
        txtField = new TextField();
        txtField.setValue(setData.getName());
        txtField.setWidth(FIELD_WIDTH);
        setImmediate(true);
        setCompositionRoot(mainLayout);

        txtField.addListener(new Property.ValueChangeListener() {
            public void valueChange(final com.vaadin.data.Property.ValueChangeEvent event) {
                final String value = (String) txtField.getValue();
                setValue(value);
            }
        });

        // drop handler
        final DragAndDropWrapper targetWrapper = new DragAndDropWrapper(txtField);
        targetWrapper.setDropHandler(new DropHandler() {

            public void drop(final DragAndDropEvent event) {
                final DataBoundTransferable t = (DataBoundTransferable) event.getTransferable();
                final TreeNode node = (TreeNode) t.getData("itemId");
                setData.setSet(node.getSet());
                txtField.setValue(setData.getName());
                setValue(node.getSet());
                txtField.requestRepaint();
            }

            public AcceptCriterion getAcceptCriterion() {
                return AcceptAll.get();
            }
        });
        mainLayout.addComponent(targetWrapper);
    }

    @Override
    public Class<?> getType() {
        return SetData.class;
    }

}