tocresourcecontent.java

esri的ArcGIS Server超级学习模板程序（for java）

package com.esri.solutions.jitk.web.data;

import java.util.List;

import javax.faces.model.SelectItem;

import com.esri.adf.web.data.GISResource;

/**
 * Extension of {@link com.esri.adf.web.data.TocResourceContent} in
 * order to manipulate the ADF-provided Context Menu Items that are
 * shown for a GIS Resource.  This is needed in order to protect
 * Overlays within the WebContext.  This implementation will
 * remove the Move Up, Move Down, and Remove Context Menu Items
 * based on the return values of {@link WebContext#canMoveUp(GISResource)},
 * {@link WebContext#canMoveDown(GISResource)}, and
 * {@link WebContext#canRemove(GISResource)}.
 *
 * <p>
 * If an ADF WebContext object is in use, then the ADF-provided
 * Context Menu Items are returned unchanged.
 * </p>
 */
public class TocResourceContent extends
		com.esri.adf.web.data.TocResourceContent {

	private static final long serialVersionUID = 990861410451964296L;

	@Override
	public List<SelectItem> getContextMenuItems() {
		List<SelectItem> items = super.getContextMenuItems();
		GISResource resource = this.getResource();
		com.esri.adf.web.data.WebContext adfContext = resource.getWebContext();
		
		if (!(adfContext instanceof WebContext)) {
			return items;
		}
		
		if (items == null) {
			return items;
		}
		
		WebContext context = (WebContext) adfContext;
		
		if (!context.canMoveDown(resource)) {
			items.remove(moveDown);
		}
		if (!context.canMoveUp(resource)) {
			items.remove(moveUp);
		}
		if (!context.canRemove(resource)) {
			items.remove(removeResource);
		}
		
		return items;
	}

	
}