/** */package org.wfp.vam.intermap.services.map;import java.net.URLDecoder;import java.util.ArrayList;import java.util.HashMap;import java.util.Iterator;import java.util.List;import java.util.StringTokenizer;import jeeves.server.UserSession;import jeeves.server.context.ServiceContext;import org.jdom.Element;import org.wfp.vam.intermap.Constants;import org.wfp.vam.intermap.kernel.map.DefaultMapServers;import org.wfp.vam.intermap.kernel.map.MapMerger;import org.wfp.vam.intermap.kernel.map.mapServices.BoundingBox;import org.wfp.vam.intermap.kernel.map.mapServices.MapService;import org.wfp.vam.intermap.kernel.map.mapServices.arcims.ArcIMSService;import org.wfp.vam.intermap.kernel.map.mapServices.wms.WmsGetCapClient;import org.wfp.vam.intermap.kernel.map.mapServices.wms.WmsService;public class MapUtil{	private static int _minh;	private static int _minw;	private static int _maxh;	private static int _maxw;	private static String defaultImageSize;	private static String url;	public static void setImageSizes(int minh, int minw, int maxh, int maxw) {		_minh = minh;		_minw = minw;		_maxh = maxh;		_maxw = maxw;	}	// Returns the MapMerger object for the user session	public static MapMerger getMapMerger(ServiceContext context)	{		MapMerger mm = (MapMerger)context.getUserSession()			.getProperty(Constants.SESSION_MAP);		if (mm == null)			mm = new MapMerger();		return mm;	}	public static void setAoi(ServiceContext context, float minx, float miny, float maxx, float maxy)		throws Exception	{		BoundingBox bb = new BoundingBox(maxy, miny, maxx, minx);		UserSession us = context.getUserSession();		us.setProperty("aoi", bb);	}	protected static BoundingBox getAoi(ServiceContext context)		throws Exception	{		UserSession us = context.getUserSession();		return (BoundingBox)us.getProperty("aoi");	}	protected static void unsetAoi(ServiceContext context)		throws Exception	{		UserSession us = context.getUserSession();		us.setProperty("aoi", new BoundingBox(0, 0, 0, 0)); // there is no way at the moment to set it null or delete it	}	protected static void setActiveLayer(Element request, MapMerger mm)		throws Exception	{		StringTokenizer t = new StringTokenizer(request.getChildText("activeLayer"), "_");		try {			mm.setActiveLayer(Integer.parseInt(t.nextToken()), Integer.parseInt(t.nextToken()));		}		catch (Exception e) {} // Who cares?	}	protected static void setVisibleLayers(Element request, MapMerger mm)	{		for(Element param : (List<Element>)request.getChildren())		{			String key   = param.getName();			String value = param.getText();			StringTokenizer t = new StringTokenizer(key, "_");			if (t.hasMoreTokens()) {				if (t.nextToken().equals("layerVisible")) {					String serviceId = t.nextToken();					String layerId = t.nextToken();					MapService ms = mm.getService(Integer.parseInt(serviceId));					if (ms != null) {						boolean visible = value.equals("true");						ms.setLayerVisible(layerId, visible);					}				}			}		}	}	protected static void setTransparency(Element request, MapMerger mm) {		List layers = request.getChildren();		for (Iterator i = layers.iterator(); i.hasNext(); ) {			Element param = (Element)i.next();			String key = param.getName();			String value = param.getText();			StringTokenizer t = new StringTokenizer(key, "_");			if (t.hasMoreTokens()) {				if (t.nextToken().equals("t")) {					int serviceId = Integer.parseInt(t.nextToken());					try {						float tr = Float.parseFloat(value);						if (tr >= 0 && tr <= 100)							mm.setTransparency(serviceId, Float.parseFloat(value) / 100);					}					catch (Exception e) { }				}			}		}	}	/**	 * @return the id of the service, or -1 if the service has not been added	 */	public static int addService(int serverType, String serverUrl, String serviceName, String vsp, MapMerger mm) throws Exception	{		// Do not add the service if it is already there		for(MapService service: mm.getServices())		{			String url = service.getServerURL();			String name = service.getName();			if (url.equals(serverUrl) && name.equals(serviceName))				return -1;		}		int ret;		switch (serverType)		{			case ArcIMSService.TYPE :				ret = mm.addService(new ArcIMSService(serverUrl, serviceName));				break;			case WmsService.TYPE :				Element capabilities = WmsGetCapClient.getCapabilities(serverUrl);//				Element capabilities = CapabilitiesStore.getCapabilities(serverUrl); NEW VERSION: WORK IN PROGRESS				WmsService s = new WmsService(serverUrl, serviceName, capabilities);				ret = mm.addService(s);				setVendorSpecificParams(s, vsp);				break;			default:				throw new IllegalArgumentException("Unknown serverType " + serverType +												   " for service " + serviceName + " @ " + serverUrl);		}		return ret;	}	private static void setVendorSpecificParams(WmsService service, String params) {		if (params == null) return;		String stParams = URLDecoder.decode(params);		HashMap hmParams = new HashMap();		StringTokenizer t1;		for (t1 = new StringTokenizer(stParams, "&"); t1.hasMoreTokens(); ) {			String s = t1.nextToken();			int p = s.indexOf("=");			if (p != -1) {				String name = s.substring(0, p);//				System.out.println("name:" + name);				String value = s.substring(p + 1, s.length());//				System.out.println("value: " + value);				hmParams.put(name, value);			}		}//		System.out.println("hmParams: " + hmParams);		service.setVendorSpecificParams(hmParams); //TEST	}	public static void setDefaultContext(MapMerger mm) throws Exception	{		Element mapContext = DefaultMapServers.getDefaultContext();		// Add each layer in the map context to the map		for (Element elServer: (List<Element>)mapContext.getChildren("server"))		{			String serverType = elServer.getAttributeValue(Constants.MAP_SERVER_TYPE);			String serverUrl  = elServer.getAttributeValue(Constants.MAP_SERVER_URL);			for (Element elLayer: (List<Element>)elServer.getChildren(Constants.MAP_LAYER))			{				try				{					String serviceName = elLayer.getAttributeValue("name");					MapUtil.addService(Integer.parseInt(serverType), serverUrl, serviceName, "", mm);				}				catch (Exception e) { e.printStackTrace(); } // DEBUG: tell the user			}		}		MapUtil.setDefBoundingBox(mm);	}	public static void setDefBoundingBox(MapMerger mm) throws Exception	{		List<BoundingBox> lbb = new ArrayList<BoundingBox>();		for(MapService service: mm.getServices())			lbb.add( service.getDefBoundingBox() );		mm.setBoundingBox(BoundingBox.union(lbb));	}	protected static void setBBoxFromUrl(String bbox, MapMerger mm) {		StringTokenizer st = new StringTokenizer(bbox, ",");		try {			float w = Float.parseFloat(st.nextToken());			float s = Float.parseFloat(st.nextToken());			float e = Float.parseFloat(st.nextToken());			float n = Float.parseFloat(st.nextToken());			mm.setBoundingBox(new BoundingBox(n, s, e, w));		}		catch (Exception e) {			mm.setBoundingBox(new BoundingBox());		}	}	/**	 * @deprecated ETj: image dimensions are no longer handled server side	 */	public static int getImageWidth(ServiceContext srvContext) {		String size = (String)srvContext.getUserSession().getProperty(Constants.SESSION_SIZE);		int width;		if (size.equals("small")) width = _minw;		else width = _maxw;		return width;	}	/**	 * @deprecated ETj: image dimensions are no longer handled server side	 */	public static int getImageHeight(ServiceContext srvContext) {		String size = (String)srvContext.getUserSession().getProperty(Constants.SESSION_SIZE);		int height;		if (size.equals("small")) height = _minh;		else height = _maxh;		return height;	}	// Returns the MapMerger object for the user session	 static String getTool(ServiceContext srvContext)	{		String tool = (String)srvContext.getUserSession()			.getProperty(Constants.SESSION_TOOL);		if (tool == null)			tool = Constants.DEFAULT_TOOL;		return tool;	}	public static void setTempUrl(String url) {		MapUtil.url = url;	}	public static String getTempUrl() {		return MapUtil.url;	}	protected static void moveTo(BoundingBox bb, int x, int y, int width, int height) throws Exception	{		float mapX = bb.getWest() + (bb.getEast() - bb.getWest()) * x / width;		float mapY = bb.getNorth() - (bb.getNorth() - bb.getSouth()) * y / height;		bb.moveTo(mapX, mapY);	}	protected static BoundingBox move(BoundingBox bb, int deltaX, int deltaY, int width, int height) throws Exception	{		float mapX = (bb.getEast() - bb.getWest()) * (float)deltaX / width;		float mapY = (bb.getNorth() - bb.getSouth()) * (float)deltaY / height;		return bb.move(mapX, mapY);	}	protected static BoundingBox zoomInBox(BoundingBox bb, int mapimgx, int mapimgy, int mapimgx2, int mapimgy2, int imageWidth, int imageHeigth)		throws Exception {		// Move and zoom		float mapX = bb.getWest() + (bb.getEast() - bb.getWest()) * mapimgx / imageWidth;		float mapY = bb.getNorth() - (bb.getNorth() - bb.getSouth()) * mapimgy / imageHeigth;		float mapX2 = bb.getWest() + (bb.getEast() - bb.getWest()) * mapimgx2 / imageWidth;		float mapY2 = bb.getNorth() - (bb.getNorth() - bb.getSouth()) * mapimgy2 / imageHeigth;		return new BoundingBox(mapY2, mapY, mapX2, mapX);	}	protected static BoundingBox zoomOutBox(BoundingBox bb, int mapimgx, int mapimgy, int mapimgx2, int mapimgy2, int imageWidth, int imageHeight)		throws Exception {		// Move and zoom		float north = bb.getNorth() + (bb.getNorth() - bb.getSouth()) * imageHeight / (mapimgy - mapimgy2);		float south = bb.getSouth() - (bb.getNorth() - bb.getSouth()) * imageHeight / (mapimgy - mapimgy2);		float east = bb.getEast() + (bb.getEast() - bb.getWest()) * imageWidth / (mapimgx2 - mapimgx);		float west = bb.getWest() - (bb.getEast() - bb.getWest()) * imageWidth / (mapimgx2 - mapimgx);//		System.out.println("north : " + north + "; south = " + south + "; east = " + east + "; west = " + west);		return new BoundingBox(north, south, east, west);	}	public static BoundingBox setScale(BoundingBox bb, int imageWidth, int imageHeight, long scale, float dpi)		throws Exception	{		float cx = (bb.getEast()+bb.getWest())/2;		float cy = (bb.getNorth()+bb.getSouth())/2;		// Set the scale		double degScale = scale/423307109.727 * 96f/dpi;		float dx = (float)(imageWidth  * degScale);	 	float dy = (float)(imageHeight * degScale);		return new BoundingBox( cy+dy/2, cy-dy/2,									   cx+dx/2, cx-dx/2);	}	public static void setDefaultImageSize(String s) {		defaultImageSize = s;	}	public static String getDefaultImageSize() {		return defaultImageSize;	}}