/* uDig - User Friendly Desktop Internet GIS client
* http://udig.refractions.net
* (C) 2010, Refractions Research Inc.
*
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License v1.0
* (http://www.eclipse.org/legal/epl-v10.html), and the Refractions BSD
* License v1.0 (http://udig.refractions.net/files/bsd3-v10.html).
*/
package org.locationtech.udig.catalog.internal.wmt.ui.wizard;
import java.io.IOException;
import java.io.Serializable;
import java.net.MalformedURLException;
import java.net.URL;
import java.util.Collections;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import org.locationtech.udig.catalog.CatalogPlugin;
import org.locationtech.udig.catalog.IResolve;
import org.locationtech.udig.catalog.IService;
import org.locationtech.udig.catalog.internal.wmt.wmtsource.ww.LayerSet;
import org.locationtech.udig.catalog.internal.wmt.ww.WWGeoResource;
import org.locationtech.udig.catalog.internal.wmt.ww.WWService;
import org.locationtech.udig.catalog.internal.wmt.ww.WWServiceExtension;
import org.locationtech.udig.catalog.ui.UDIGConnectionFactory;
import org.eclipse.core.runtime.NullProgressMonitor;
/**
* Based on WMSConnectionFactory
*
* @see org.locationtech.udig.catalog.internal.wms.ui.WMSConnectionFactory
*
* @author to.srwn
* @since 1.1.0
*/
public class WWConnectionFactory extends UDIGConnectionFactory {
public boolean canProcess(Object context) {
if(context instanceof IResolve){
IResolve resolve = (IResolve) context;
return resolve.canResolve(LayerSet.class);
}
return toWWConfigURL(context) != null;
}
public Map<String, Serializable> createConnectionParameters( Object context ) {
if (context instanceof IResolve) {
Map<String, Serializable> params = createParams((IResolve) context);
if (!params.isEmpty())
return params;
}
URL url = toWWConfigURL(context);
if (url == null) {
// so we are not sure it is a WW Config File url
// lets guess
url = CatalogPlugin.locateURL(context);
}
if (url != null) {
// well we have a url - lets try it!
List<IResolve> list = CatalogPlugin.getDefault().getLocalCatalog().find(url, null);
for( IResolve resolve : list ) {
Map<String, Serializable> params = createParams(resolve);
if (!params.isEmpty())
return params; // we got the goods!
}
return createParams(url);
}
return Collections.emptyMap();
}
static public Map<String,Serializable> createParams( IResolve handle ){
if(handle instanceof WWService) {
// got a hit!
WWService service = (WWService) handle;
return service.getConnectionParams();
}
else if (handle instanceof WWGeoResource ){
WWGeoResource geoResource = (WWGeoResource) handle;
WWService service;
try {
service = (WWService) geoResource.service(new NullProgressMonitor());
return service.getConnectionParams();
} catch (IOException e) {
checkedURL(geoResource.getIdentifier());
}
}
else if(handle.canResolve(LayerSet.class)){
// must be some kind of handle from a search!
return createParams(handle.getIdentifier());
}
return Collections.emptyMap();
}
/** 'Create' params given the provided url, no magic occurs */
static public Map<String,Serializable> createParams(URL url){
WWServiceExtension factory = new WWServiceExtension();
Map<String,Serializable> params = factory.createParams(url);
if( params != null) return params;
Map<String,Serializable> params2 = new HashMap<String,Serializable>();
params2.put(WWService.WW_URL_KEY, url);
return params2;
}
/**
* Convert "data" to a WW Config UUrl
* <p>
* Candidates for conversion are:
* <ul>
* <li>URL - from browser DnD
* <li>URL#layer - from browser DnD
* <li>WMSService - from catalog DnD
* <li>WMSGeoResource - from catalog DnD
* <li>IService - from search DnD
* </ul>
* </p>
* <p>
* No external processing should be required here, it is enough to guess and let
* the ServiceFactory try a real connect.
* </p>
* @param data IService, URL, or something else
* @return URL considered a possibility for a WMS Capabilities, or null
*/
static URL toWWConfigURL( Object data ) {
if( data instanceof IResolve ){
return toWWConfigURL( (IResolve) data );
}
else if( data instanceof URL ){
return toWWConfigURL( (URL) data );
}
else if( CatalogPlugin.locateURL(data) != null ){
return toWWConfigURL( CatalogPlugin.locateURL(data) );
}
else {
return null; // no idea what this should be
}
}
static URL toWWConfigURL( IResolve resolve ){
if( resolve instanceof IService ){
return toWWConfigURL( (IService) resolve );
}
return toWWConfigURL( resolve.getIdentifier() );
}
static URL toWWConfigURL(IService resolve){
if(resolve instanceof WWService){
return toWWConfigURL((WWService) resolve);
}
return toWWConfigURL(resolve.getIdentifier());
}
/** No further QA checks needed - we know this one works */
static URL toWWConfigURL(WWService service){
return service.getIdentifier();
}
/** Quick sanity check to see if url is a WMS url */
static URL toWWConfigURL(URL url){
if (url == null) return null;
String PROTOCOL = url.getProtocol();
String PATH = url.getPath();
if (PROTOCOL==null || PROTOCOL.isEmpty()) {
return null;
}
if (PATH == null || PATH.isEmpty() || !PATH.toLowerCase().contains(".xml")) { //$NON-NLS-1$
return null;
}
return checkedURL(url);
}
/** Check that any trailing #layer is removed from the url */
static public URL checkedURL(URL url){
String check = url.toExternalForm();
int hash = check.indexOf('#');
if ( hash == -1 ){
return url;
}
try {
return new URL( check.substring(0, hash ));
} catch (MalformedURLException e) {
return null;
}
}
public URL createConnectionURL(Object context) {
if(context instanceof URL){
return (URL) context;
}
return null;
}
}