org.jspresso.framework.binding.swing.JActionFieldConnector.java Source code

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Here is the source code for org.jspresso.framework.binding.swing.JActionFieldConnector.java

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/*
 * Copyright (c) 2005-2016 Vincent Vandenschrick. All rights reserved.
 *
 *  This file is part of the Jspresso framework.
 *
 *  Jspresso is free software: you can redistribute it and/or modify
 *  it under the terms of the GNU Lesser General Public License as published by
 *  the Free Software Foundation, either version 3 of the License, or
 *  (at your option) any later version.
 *
 *  Jspresso is distributed in the hope that it will be useful,
 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *  GNU Lesser General Public License for more details.
 *
 *  You should have received a copy of the GNU Lesser General Public License
 *  along with Jspresso.  If not, see <http://www.gnu.org/licenses/>.
 */
package org.jspresso.framework.binding.swing;

import java.awt.event.FocusAdapter;
import java.awt.event.FocusEvent;

import org.apache.commons.lang3.StringUtils;
import org.jspresso.framework.gui.swing.components.JActionField;
import org.jspresso.framework.util.event.IValueChangeListener;
import org.jspresso.framework.util.event.ValueChangeEvent;

/**
 * JActionFieldConnector connector.
 *
 * @author Vincent Vandenschrick
 */
public class JActionFieldConnector extends JComponentConnector<JActionField> {

    private Object value;

    /**
     * Constructs a new {@code JActionFieldConnector} instance.
     *
     * @param id
     *          the id of the connector.
     * @param actionField
     *          the connected JActionField.
     */
    public JActionFieldConnector(String id, JActionField actionField) {
        super(id, actionField);
        if (!getConnectedJComponent().isShowingTextField()) {
            addValueChangeListener(new IValueChangeListener() {

                @Override
                public void valueChange(ValueChangeEvent evt) {
                    if (evt.getNewValue() instanceof byte[]) {
                        getConnectedJComponent().setDecorated(((byte[]) evt.getNewValue()).length > 0);
                    } else {
                        getConnectedJComponent().setDecorated(evt.getNewValue() != null);
                    }
                }
            });
        }
    }

    /**
     * Performs the action field action if the action field is not synchronized.
     */
    public void performActionIfNeeded() {
        if (!getConnectedJComponent().isSynchronized()) {
            if (StringUtils.isEmpty(getConnectedJComponent().getActionText())) {
                setConnectorValue(null);
            } else {
                getConnectedJComponent().performAction();
            }
        }
    }

    /**
     * {@inheritDoc}
     */
    @Override
    protected void bindJComponent() {

        getConnectedJComponent().addTextFieldFocusListener(new FocusAdapter() {

            /**
             * {@inheritDoc}
             */
            @Override
            public void focusLost(FocusEvent e) {
                if (!e.isTemporary()) {
                    performActionIfNeeded();
                }
            }
        });
    }

    /**
     * Gets the action text to display in the action field.
     *
     * @return the action text to display in the action field.
     */
    protected String getActionText() {
        if (value == null) {
            return "";
        }
        return value.toString();
    }

    /**
     * {@inheritDoc}
     */
    @Override
    protected Object protectedGetConnecteeValue() {
        return value;
    }

    /**
     * {@inheritDoc}
     */
    @Override
    protected void protectedSetConnecteeValue(Object aValue) {
        value = aValue;
        getConnectedJComponent().setValue(getActionText());
    }

    /**
     * {@inheritDoc}
     */
    @Override
    protected void protectedWritabilityChange() {
        super.protectedWritabilityChange();
        getConnectedJComponent().setEnabled(isWritable());
    }
}