Mercurial > dive4elements > river
comparison flys-client/src/main/java/de/intevation/flys/client/server/ThemeListingServiceImpl.java @ 2540:e75b15818435
Added a style chooser to the style editor to provide predefined styles and
implemented a service to request theme styles.
flys-client/trunk@4471 c6561f87-3c4e-4783-a992-168aeb5c3f6f
| author | Raimund Renkert <raimund.renkert@intevation.de> |
|---|---|
| date | Wed, 23 May 2012 08:59:49 +0000 |
| parents | |
| children | cd068ff7966d |
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| 2539:a9cdd62aa73e | 2540:e75b15818435 |
|---|---|
| 1 package de.intevation.flys.client.server; | |
| 2 | |
| 3 import java.util.Map; | |
| 4 import java.util.HashMap; | |
| 5 | |
| 6 import javax.xml.xpath.XPathConstants; | |
| 7 | |
| 8 import org.w3c.dom.Document; | |
| 9 import org.w3c.dom.NodeList; | |
| 10 import org.w3c.dom.Element; | |
| 11 | |
| 12 import org.apache.log4j.Logger; | |
| 13 | |
| 14 import com.google.gwt.user.server.rpc.RemoteServiceServlet; | |
| 15 | |
| 16 import de.intevation.artifacts.common.utils.XMLUtils; | |
| 17 | |
| 18 import de.intevation.artifacts.httpclient.exceptions.ConnectionException; | |
| 19 import de.intevation.artifacts.httpclient.http.HttpClient; | |
| 20 import de.intevation.artifacts.httpclient.http.HttpClientImpl; | |
| 21 | |
| 22 import de.intevation.flys.client.shared.exceptions.ServerException; | |
| 23 import de.intevation.flys.client.shared.model.Style; | |
| 24 import de.intevation.flys.client.shared.model.StyleSetting; | |
| 25 import de.intevation.flys.client.client.services.ThemeListingService; | |
| 26 | |
| 27 | |
| 28 /** | |
| 29 * This interface provides a method to list themes filtered by name. | |
| 30 * | |
| 31 * @author <a href="mailto:raimund.renkert@intevation.de">Raimund Renkert</a> | |
| 32 */ | |
| 33 public class ThemeListingServiceImpl | |
| 34 extends RemoteServiceServlet | |
| 35 implements ThemeListingService | |
| 36 { | |
| 37 private static final Logger logger = | |
| 38 Logger.getLogger(ThemeListingServiceImpl.class); | |
| 39 | |
| 40 | |
| 41 private static final String XPATH_THEME_GROUPS = "/themes/themegroup"; | |
| 42 /** The error message key that is thrown if an error occured while reading | |
| 43 * the supported rivers from server.*/ | |
| 44 public static final String ERROR_NO_GROUPS_FOUND = "error_no_groups_found"; | |
| 45 | |
| 46 | |
| 47 public Map<String, Style> list(String locale, String name) | |
| 48 throws ServerException | |
| 49 { | |
| 50 String url = getServletContext().getInitParameter("server-url"); | |
| 51 | |
| 52 Document doc = XMLUtils.newDocument(); | |
| 53 | |
| 54 XMLUtils.ElementCreator ec = new XMLUtils.ElementCreator( | |
| 55 doc, | |
| 56 null, | |
| 57 null); | |
| 58 | |
| 59 Element e = ec.create("theme"); | |
| 60 ec.addAttr(e, "name", name); | |
| 61 doc.appendChild(e); | |
| 62 HttpClient client = new HttpClientImpl(url, locale); | |
| 63 | |
| 64 try { | |
| 65 Document res = client.callService(url, "themelisting", doc); | |
| 66 | |
| 67 NodeList themeGroups = (NodeList) XMLUtils.xpath( | |
| 68 res, | |
| 69 XPATH_THEME_GROUPS, | |
| 70 XPathConstants.NODESET, | |
| 71 null); | |
| 72 | |
| 73 if (themeGroups == null || themeGroups.getLength() == 0) { | |
| 74 throw new ServerException(ERROR_NO_GROUPS_FOUND); | |
| 75 } | |
| 76 | |
| 77 int count = themeGroups.getLength(); | |
| 78 | |
| 79 Map<String, Style> theStyles = new HashMap<String, Style>(count); | |
| 80 | |
| 81 for (int i = 0; i < count; i++) { | |
| 82 Element tmp = (Element)themeGroups.item(i); | |
| 83 | |
| 84 String groupName = tmp.getAttribute("name"); | |
| 85 NodeList theTheme = (NodeList) XMLUtils.xpath( | |
| 86 tmp, | |
| 87 "theme", | |
| 88 XPathConstants.NODESET, | |
| 89 null); | |
| 90 | |
| 91 for (int j = 0; j < theTheme.getLength(); j++) { | |
| 92 Element elem = (Element) theTheme.item(j); | |
| 93 theStyles.put(groupName, getStyle(elem)); | |
| 94 } | |
| 95 } | |
| 96 | |
| 97 return theStyles; | |
| 98 } | |
| 99 catch (ConnectionException ce) { | |
| 100 logger.error(ce, ce); | |
| 101 } | |
| 102 | |
| 103 throw new ServerException(ERROR_NO_GROUPS_FOUND); | |
| 104 } | |
| 105 | |
| 106 | |
| 107 protected Style getStyle (Element element) { | |
| 108 if (!element.getTagName().equals("theme")) { | |
| 109 return null; | |
| 110 } | |
| 111 | |
| 112 NodeList list = element.getElementsByTagName("field"); | |
| 113 Style style = new Style(); | |
| 114 | |
| 115 style.setName (element.getAttribute("name")); | |
| 116 style.setFacet (element.getAttribute("facet")); | |
| 117 | |
| 118 try { | |
| 119 int ndx = Integer.parseInt(element.getAttribute("index")); | |
| 120 style.setIndex (ndx); | |
| 121 } | |
| 122 catch(NumberFormatException nfe) { | |
| 123 return null; | |
| 124 } | |
| 125 | |
| 126 for(int i = 0; i < list.getLength(); i++) { | |
| 127 Element e = (Element) list.item(i); | |
| 128 StyleSetting set = new StyleSetting ( | |
| 129 e.getAttribute("name"), | |
| 130 e.getAttribute("default"), | |
| 131 e.getAttribute("display"), | |
| 132 e.getAttribute("hints"), | |
| 133 e.getAttribute("type")); | |
| 134 style.appendStyleSetting(set); | |
| 135 } | |
| 136 return style; | |
| 137 } | |
| 138 } | |
| 139 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 : |