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/**
 * Copyright 2014-2018 Fraunhofer-Gesellschaft zur Förderung der angewandten Wissenschaften e.V.
 *
 * 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.iwes.widgets.resource.widget.dropdown;

import org.ogema.core.model.Resource;
import org.ogema.core.model.ResourceList;

import de.iwes.widgets.api.extended.mode.UpdateMode;
import de.iwes.widgets.api.widgets.OgemaWidget;
import de.iwes.widgets.api.widgets.WidgetPage;
import de.iwes.widgets.api.widgets.sessionmanagement.OgemaHttpRequest;
import de.iwes.widgets.html.form.dropdown.DropdownData;

/**
 * A dropdown that allows to select a resource from a resource list. Only update mode
 * {@link UpdateMode#AUTO_ON_GET} is supported, for other update modes use a
 * {@link ResourceDropdown} instead.
 *
 * @param 
 * 		the resource type
 */
public class ResourceListDropdown extends ResourceDropdown {

	private static final long serialVersionUID = 1L;
	protected ResourceList defaultList = null;
	

	public ResourceListDropdown(WidgetPage page, String id, boolean globalWidget) {
		this(page, id, globalWidget, null);
	}
	
	public ResourceListDropdown(WidgetPage page, String id, boolean globalWidget, ResourceList defaultList) {
		super(page, id, globalWidget, null, UpdateMode.AUTO_ON_GET, null);
		this.defaultList = defaultList;
	}
	
	public ResourceListDropdown(OgemaWidget parent, String id, OgemaHttpRequest req, ResourceList defaultList) {
		super(parent, id, null, UpdateMode.AUTO_ON_GET, null, req);
		this.defaultList = defaultList;
	}
	
	@Override
	public ResourceListDropdownData createNewSession() {
		return new ResourceListDropdownData(this, updateMode, ra);
	}
	
	@Override
	public ResourceListDropdownData getData(OgemaHttpRequest req) {
		return (ResourceListDropdownData) super.getData(req);
	}
	
	@Override
	protected void setDefaultValues(DropdownData opt) {
		super.setDefaultValues(opt);
		@SuppressWarnings("unchecked")
		ResourceListDropdownData opt2 = (ResourceListDropdownData) opt;
		opt2.setList(defaultList);
	}
	
	public void setDefaultList(ResourceList list) {
		this.defaultList = list;
	}
	
	public ResourceList getList(OgemaHttpRequest req) {
		return getData(req).getList();
	}

	public void setList(ResourceList list, OgemaHttpRequest req) {
		getData(req).setList(list);
	}

	/**
	 * Not supported by ResourceListDropdown
	 */
	@Override
	public boolean addItem(R item, OgemaHttpRequest req) {
		throw new UnsupportedOperationException("Not supported by ResourceListDropdown");
	}
	
	/**
	 * Not supported by ResourceListDropdown
	 */
	@Override
	public boolean removeItem(R item, OgemaHttpRequest req) {
		throw new UnsupportedOperationException("Not supported by ResourceListDropdown");
	}
	
	/**
	 * Not supported by ResourceListDropdown
	 */
	@Override
	public void setType(Class type, OgemaHttpRequest req) {
		throw new UnsupportedOperationException("Not supported by ResourceListDropdown");
	}

	@Override
	public Class getType(OgemaHttpRequest req) {
		if (defaultList != null)
			return defaultList.getElementType();
		else
			return null;
	}
	
}