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/**
 * Copyright 2018 Mike Hummel
 *
 * 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 de.mhus.lib.vaadin.form;

import com.vaadin.ui.Component;
import com.vaadin.v7.ui.ComboBox;

import de.mhus.lib.core.MCast;
import de.mhus.lib.core.config.IConfig;
import de.mhus.lib.errors.MException;
import de.mhus.lib.form.ComponentAdapter;
import de.mhus.lib.form.ComponentDefinition;
import de.mhus.lib.form.DataSource;
import de.mhus.lib.form.Item;
import de.mhus.lib.form.UiComponent;

@SuppressWarnings("deprecation")
public class UiCombobox extends UiVaadin {

	@Override
	public Component createEditor() {
		ComboBox ret = new ComboBox();
		ret.setNullSelectionAllowed(false);
		ret.setTextInputAllowed(false);
		return ret;
	}

	@Override
	protected void setValue(Object value) throws MException {
		((ComboBox)getComponentEditor()).setValue(MCast.toString(value));
	}

	@Override
	protected Object getValue() throws MException {
		String ret = (String)((ComboBox)getComponentEditor()).getValue();
		if (ret == null) return null;
		return ret;
	}

	@Override
	public void doUpdateMetadata() throws MException {
		ComboBox cb = (ComboBox)getComponentEditor();
		Object value = cb.getValue();
		cb.removeAllItems();
		String itemsDef = getConfig().getString("itemdef", getName() + "." + DataSource.ITEMS);
		Object itemsObj = getForm().getDataSource().getObject(itemsDef, null);
		if (itemsObj == null)
			itemsObj = getConfig().getString("items", null);
		if (itemsObj != null) {
			if (itemsObj instanceof Item[]) {
				Item[] items = (Item[]) itemsObj;
				for (Item item : items) {
					cb.addItem(item.getKey());
					cb.setItemCaption(item.getKey(), item.getCaption());
				}
			} else
			if (itemsObj instanceof String) {
				for (String item : ((String) itemsObj).split(";")) {
					String[] parts = item.split("=",2);
					if (parts.length == 2) {
						cb.addItem(parts[0]);
						cb.setItemCaption(parts[0], parts[1]);
					} else
					if (parts.length == 1) {
						cb.addItem(parts[0]);
						cb.setItemCaption(parts[0], parts[0]);
					}
				}
				
			}
		}
		cb.setValue(value);
	}

	public static class Adapter implements ComponentAdapter {

		@Override
		public UiComponent createAdapter(IConfig config) {
			return new UiCombobox();
		}

		@Override
		public ComponentDefinition getDefinition() {
			// TODO Auto-generated method stub
			return null;
		}
		
	}

}