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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.init;

import org.ogema.core.model.Resource;
import org.ogema.core.resourcemanager.ResourceAccess;

import de.iwes.widgets.api.extended.mode.UpdateMode;
import de.iwes.widgets.api.extended.plus.InitWidget;
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.resource.widget.dropdown.ResourceDropdown;

/**
 * A pattern dropdown that is initialized from the url parameter "configId".
 * Include it in a page and open the url:
 
 * https://<HOST>:<PORT>/path/to/page?configId=<SELECTED_RESOURCe>
 * 

 * where SELECTED_RESOURCE is the path to some resource included in the dropdown options. 
 * The resource will then be preselected on the new page.
 * 

 * The URL may be created for instance by a {@link ResourceRedirectButton}
 *
 * @see ResourceDropdown
 *
 * @param 
 */
public class ResourceInitDropdown extends ResourceDropdown implements InitWidget {

	private static final long serialVersionUID = 1L;
	
	/**
	 * Update mode {@link UpdateMode#MANUAL}
	 * @param page
	 * @param id
	 */
	public ResourceInitDropdown(WidgetPage page, String id, boolean globalWidget) {
		this(page, id, globalWidget, UpdateMode.MANUAL, null,null);
	}
	
	/**
	 * Update mode {@link UpdateMode#AUTO_ON_GET}
	 * @param page
	 * @param id
	 * @param defaultType
	 * @param ra
	 */
	public ResourceInitDropdown(WidgetPage page, String id, Class defaultType, ResourceAccess ra) {
		this(page, id, false, UpdateMode.AUTO_ON_GET, defaultType, ra);
	}
	
	/**
	 * Generic constructor.
	 * @param page
	 * @param id
	 * @param globalWidget
	 * @param updateMode
	 * @param defaultType
	 * @param ra
	 */
	public ResourceInitDropdown(WidgetPage page, String id, boolean globalWidget, UpdateMode updateMode,  Class defaultType, ResourceAccess ra) {
		super(page, id, globalWidget, defaultType, updateMode, ra);
	}

	/**
	 * Session widget; only exists for one user
	 * @param parent
	 * @param id
	 * @param req
	 * @param updateMode
	 * @param defaultType
	 * @param ra
	 */
	public ResourceInitDropdown(OgemaWidget parent, String id, OgemaHttpRequest req, UpdateMode updateMode,  Class defaultType, ResourceAccess ra) {
		super(parent, id, defaultType, updateMode, ra, req);
	}


	@Override
	public void init(OgemaHttpRequest req) {
		String[] patterns = InitUtil.getInitParameters(getPage(), req);
		if (patterns == null || patterns.length == 0)
			return;
		String selected = patterns[0];
		getData(req).selectSingleOption(selected);
	}

	
}