org.jboss.forge.plugin.idea.components.ComboComponentBuilder.java Source code

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Here is the source code for org.jboss.forge.plugin.idea.components.ComboComponentBuilder.java

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/*
 * Copyright 2013 Red Hat, Inc. and/or its affiliates.
 *
 * Licensed under the Eclipse Public License version 1.0, available at
 * http://www.eclipse.org/legal/epl-v10.html
 */

package org.jboss.forge.plugin.idea.components;

import java.awt.Component;
import java.awt.Container;
import java.awt.event.ItemEvent;
import java.awt.event.ItemListener;

import javax.swing.DefaultComboBoxModel;
import javax.swing.JComponent;
import javax.swing.JLabel;
import javax.swing.JList;
import javax.swing.ListCellRenderer;

import org.jboss.forge.addon.convert.Converter;
import org.jboss.forge.addon.convert.ConverterFactory;
import org.jboss.forge.addon.ui.hints.InputType;
import org.jboss.forge.addon.ui.input.InputComponent;
import org.jboss.forge.addon.ui.input.UISelectOne;
import org.jboss.forge.addon.ui.util.InputComponents;
import org.jboss.forge.plugin.idea.ForgeService;
import org.jboss.forge.proxy.Proxies;

import com.intellij.openapi.ui.ComboBox;

public class ComboComponentBuilder extends ComponentBuilder {

    @SuppressWarnings("unchecked")
    @Override
    public JComponent build(final InputComponent<?, Object> input, Container container) {
        // Create the label
        JLabel label = new JLabel();
        label.setText(input.getLabel() == null ? input.getName() : input.getLabel());
        container.add(label);

        final ConverterFactory converterFactory = ForgeService.INSTANCE.getConverterFactory();
        final UISelectOne<Object> selectOne = (UISelectOne<Object>) input;
        final Converter<Object, String> converter = (Converter<Object, String>) InputComponents
                .getItemLabelConverter(converterFactory, selectOne);
        final DefaultComboBoxModel model = new DefaultComboBoxModel();

        ComboBox combo = new ComboBox(model);
        combo.setRenderer(new ListCellRenderer() {

            @Override
            public Component getListCellRendererComponent(JList list, Object value, int index, boolean isSelected,
                    boolean cellHasFocus) {
                Object obj = model.getElementAt(index);
                return new JLabel(converter.convert(obj));
            }
        });
        container.add(combo);
        String value = converter.convert(InputComponents.getValueFor(input));
        Iterable<Object> valueChoices = selectOne.getValueChoices();
        if (valueChoices != null) {
            for (Object choice : valueChoices) {
                model.addElement(Proxies.unwrap(choice));
            }
        }
        combo.addItemListener(new ItemListener() {

            @Override
            public void itemStateChanged(ItemEvent e) {
                Object selectedItem = model.getSelectedItem();
                InputComponents.setValueFor(converterFactory, input, selectedItem);
            }
        });

        // Set Default Value
        if (value == null) {
            if (model.getSize() > 0) {
                model.setSelectedItem(model.getElementAt(0));
            }
        } else {
            model.setSelectedItem(value);
        }
        return combo;
    }

    @Override
    protected Class<Object> getProducedType() {
        return Object.class;
    }

    @Override
    protected InputType getSupportedInputType() {
        return InputType.SELECT_ONE_DROPDOWN;
    }

    @Override
    protected Class<?>[] getSupportedInputComponentTypes() {
        return new Class<?>[] { UISelectOne.class };
    }
}