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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 java.util.Arrays;
import java.util.Collection;

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.multiselect.ResourceMultiselect;

/**
 * Allows the user to select multiple {@link Resource}s from a list. The options can 
 * be specified either through the pattern type (see {@link #setType(Class, OgemaHttpRequest)},
 * or can be set explicitly (see {@link #update(Collection, OgemaHttpRequest)}). 

 * 
 * This is similar to a ResourceInitDropdown, but allows to select more than one resource at a time.
 * @param 
 */
// TODO listener based updates
public class ResourceInitMultiselect extends ResourceMultiselect implements InitWidget {

	private static final long serialVersionUID = 1L;
    /*
     ******** Constructors **********
     */

	/**
	 * Constructor for default update mode AUTO_ON_GET.
	 * @param page
	 * @param id
	 * @param ra
	 * @param baseType
	 */
	public ResourceInitMultiselect(WidgetPage page, String id,ResourceAccess ra, Class baseType) {
		this(page, id, false, ra, UpdateMode.AUTO_ON_GET, baseType);
	}

	/**
	 * @param page
	 * @param id
	 * @param ra
	 * 		may be null if and only if updateMode is MANUAL
	 * @param updateMode
	 * @param baseType
	 * 		may be null if and only if updateMode is MANUAL
	 */
	public ResourceInitMultiselect(WidgetPage page, String id,boolean globalWidget,ResourceAccess ra, UpdateMode updateMode, Class baseType) {
		super(page, id, globalWidget, ra, updateMode, baseType);
	}
	
	/**
	 * Constructor for session-specific widget with default update mode AUTO_ON_GET
	 * @param parent
	 * @param id
	 * @param ra
	 * @param baseType
	 * @param req
	 */
    public ResourceInitMultiselect(OgemaWidget parent, String id,ResourceAccess ra, Class baseType, OgemaHttpRequest req) {
        this(parent, id, ra, UpdateMode.AUTO_ON_GET, baseType, req);
    }
    
    /**
     * 
     * @param parent
     * @param id
     * @param ra
     * 		may be null if and only if updateMode is MANUAL
     * @param updateMode
     * @param baseType
     * 	 	may be null if and only if updateMode is MANUAL
     * @param req
     */
    public ResourceInitMultiselect(OgemaWidget parent, String id,ResourceAccess ra, UpdateMode updateMode, Class baseType, OgemaHttpRequest req) {
        super(parent, id, ra, updateMode, baseType, req);
    }

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


}