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comparison flys-client/src/main/java/de/intevation/flys/client/server/ChartInfoServiceImpl.java @ 552:6050d49eaba3

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Adapted the ChartInfoService to return more information about charts than before. In addition, the PanControl is added to the chart toolbar. flys-client/trunk@2066 c6561f87-3c4e-4783-a992-168aeb5c3f6f
author Ingo Weinzierl <ingo.weinzierl@intevation.de>
date Tue, 07 Jun 2011 13:26:24 +0000
parents e74bf6bfeeb6
children c5fc3fa02edb
comparison
equal deleted inserted replaced
551:13c7f90917fc 552:6050d49eaba3
6 6
7 import javax.xml.xpath.XPathConstants; 7 import javax.xml.xpath.XPathConstants;
8 8
9 import org.w3c.dom.Document; 9 import org.w3c.dom.Document;
10 import org.w3c.dom.Node; 10 import org.w3c.dom.Node;
11 import org.w3c.dom.NodeList;
11 12
12 import com.google.gwt.user.server.rpc.RemoteServiceServlet; 13 import com.google.gwt.user.server.rpc.RemoteServiceServlet;
13 14
14 import de.intevation.artifacts.common.ArtifactNamespaceContext; 15 import de.intevation.artifacts.common.ArtifactNamespaceContext;
15 import de.intevation.artifacts.common.utils.ClientProtocolUtils; 16 import de.intevation.artifacts.common.utils.ClientProtocolUtils;
18 import de.intevation.artifacts.httpclient.http.HttpClient; 19 import de.intevation.artifacts.httpclient.http.HttpClient;
19 import de.intevation.artifacts.httpclient.http.HttpClientImpl; 20 import de.intevation.artifacts.httpclient.http.HttpClientImpl;
20 21
21 import de.intevation.flys.client.shared.Transform2D; 22 import de.intevation.flys.client.shared.Transform2D;
22 import de.intevation.flys.client.shared.exceptions.ServerException; 23 import de.intevation.flys.client.shared.exceptions.ServerException;
24 import de.intevation.flys.client.shared.model.Axis;
25 import de.intevation.flys.client.shared.model.ChartInfo;
23 import de.intevation.flys.client.shared.model.Collection; 26 import de.intevation.flys.client.shared.model.Collection;
24 27
25 import de.intevation.flys.client.client.services.ChartInfoService; 28 import de.intevation.flys.client.client.services.ChartInfoService;
26 29
27 30
36 implements ChartInfoService 39 implements ChartInfoService
37 { 40 {
38 public static final String XPATH_TRANSFORM_MATRIX = 41 public static final String XPATH_TRANSFORM_MATRIX =
39 "/art:chartinfo/art:transformation-matrix"; 42 "/art:chartinfo/art:transformation-matrix";
40 43
44 public static final String XPATH_X_AXES =
45 "/art:chartinfo/art:axes/art:domain";
46
47 public static final String XPATH_Y_AXES =
48 "/art:chartinfo/art:axes/art:range";
49
41 public static final String EXCEPTION_STRING = "error_chart_info_service"; 50 public static final String EXCEPTION_STRING = "error_chart_info_service";
42 51
43 52
44 public Transform2D getChartInfo( 53 public ChartInfo getChartInfo(
45 Collection collection, 54 Collection collection,
46 String url, 55 String url,
47 String locale, 56 String locale,
48 String type, 57 String type,
49 Map<String, String> attr) 58 Map<String, String> attr)
76 85
77 throw new ServerException(EXCEPTION_STRING); 86 throw new ServerException(EXCEPTION_STRING);
78 } 87 }
79 88
80 89
90 protected ChartInfo parseInfoDocument(Document doc) {
91 Transform2D transformer = parseTransformationMatrix(doc);
92 Axis[] xAxes = parseXAxes(doc);
93 Axis[] yAxes = parseYAxes(doc);
94
95 de.intevation.flys.client.server.XMLDebug.out(doc);
96
97 return new ChartInfo(xAxes, yAxes, transformer);
98 }
99
100
101 protected Axis[] parseXAxes(Document doc) {
102 System.out.println("ChartInfoServiceImpl.parseXAxes");
103
104 NodeList axes = (NodeList) XMLUtils.xpath(
105 doc,
106 XPATH_X_AXES,
107 XPathConstants.NODESET,
108 ArtifactNamespaceContext.INSTANCE);
109
110 return parseAxes(axes);
111 }
112
113
114 protected Axis[] parseYAxes(Document doc) {
115 System.out.println("ChartInfoServiceImpl.parseYAxes");
116
117 NodeList axes = (NodeList) XMLUtils.xpath(
118 doc,
119 XPATH_Y_AXES,
120 XPathConstants.NODESET,
121 ArtifactNamespaceContext.INSTANCE);
122
123 return parseAxes(axes);
124 }
125
126
127 protected Axis[] parseAxes(NodeList axes) {
128 System.out.println("ChartInfoServiceImpl.parseAxes");
129
130 int count = axes != null ? axes.getLength() : 0;
131
132 System.out.println("Chart has " + count + " axes.");
133
134 if (count == 0) {
135 return null;
136 }
137
138 Axis[] result = new Axis[count];
139
140 for (int i = 0; i < count; i++) {
141 Node node = axes.item(i);
142
143 String posStr = XMLUtils.xpathString(
144 node, "@art:pos", ArtifactNamespaceContext.INSTANCE);
145
146 String fromStr = XMLUtils.xpathString(
147 node, "@art:from", ArtifactNamespaceContext.INSTANCE);
148
149 String toStr = XMLUtils.xpathString(
150 node, "@art:to", ArtifactNamespaceContext.INSTANCE);
151
152 try {
153 int pos = Integer.parseInt(posStr);
154 double from = Double.parseDouble(fromStr);
155 double to = Double.parseDouble(toStr);
156
157 result[pos] = new Axis(pos, from, to);
158 }
159 catch (NumberFormatException nfe) {
160 nfe.printStackTrace();
161 }
162 }
163
164 System.out.println("Parsed " + result.length + " axes");
165
166 return result;
167 }
168
169
81 /** 170 /**
82 * Parses the chart info document and extract the Transform2D values. 171 * Parses the chart info document and extract the Transform2D values.
83 * 172 *
84 * @param doc The chart info document. 173 * @param doc The chart info document.
85 * 174 *
86 * @return a Transform2D object to transfrom pixel coordinates into chart 175 * @return a Transform2D object to transfrom pixel coordinates into chart
87 * coordinates. 176 * coordinates.
88 */ 177 */
89 protected Transform2D parseInfoDocument(Document doc) { 178 protected Transform2D parseTransformationMatrix(Document doc) {
90 System.out.println("ChartInfoServiceImpl.parseInfoDocument"); 179 System.out.println("ChartInfoServiceImpl.parseTransformationMatrix");
91 180
92 Node matrix = (Node) XMLUtils.xpath( 181 Node matrix = (Node) XMLUtils.xpath(
93 doc, 182 doc,
94 XPATH_TRANSFORM_MATRIX, 183 XPATH_TRANSFORM_MATRIX,
95 XPathConstants.NODE, 184 XPathConstants.NODE,
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