Mercurial > mxd2map
comparison src/java/de/intevation/mxd/utils/MapToXMLUtils.java @ 31:40c0b4e5f91a
Added utility class to store map attributes.
| author | Raimund Renkert <rrenkert@intevation.de> |
|---|---|
| date | Mon, 11 Apr 2011 16:04:03 +0200 |
| parents | |
| children | 7a927921eb6c |
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| 30:c34c450edb06 | 31:40c0b4e5f91a |
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| 1 /* | |
| 2 * Copyright (c) 2010 by Intevation GmbH | |
| 3 * | |
| 4 * This program is free software under the LGPL (>=v2.1) | |
| 5 * Read the file LGPL.txt coming with the software for details | |
| 6 * or visit http://www.gnu.org/licenses/ if it does not exist. | |
| 7 */ | |
| 8 package de.intevation.mxd.utils; | |
| 9 | |
| 10 import org.apache.log4j.Logger; | |
| 11 | |
| 12 import org.w3c.dom.Attr; | |
| 13 import org.w3c.dom.Document; | |
| 14 import org.w3c.dom.Element; | |
| 15 import org.w3c.dom.NodeList; | |
| 16 | |
| 17 /** | |
| 18 * Utility class to store map information in a XML structure. | |
| 19 * | |
| 20 * @author <a href="mailto:raimund.renkert@intevation.de">Raimund Renkert</a> | |
| 21 */ | |
| 22 public class MapToXMLUtils | |
| 23 { | |
| 24 private Document root; | |
| 25 private XMLUtils.ElementCreator creator; | |
| 26 | |
| 27 public MapToXMLUtils() { | |
| 28 this.root = XMLUtils.newDocument(); | |
| 29 creator = new XMLUtils.ElementCreator(root, "", ""); | |
| 30 } | |
| 31 | |
| 32 /** | |
| 33 * Create the top level map element. | |
| 34 * | |
| 35 * @return The new map element. | |
| 36 */ | |
| 37 public Element createMap() | |
| 38 throws Exception { | |
| 39 Element map; | |
| 40 NodeList list = root.getElementsByTagName("map"); | |
| 41 if(list == null || list.getLength() == 0){ | |
| 42 map = creator.create("map"); | |
| 43 root.appendChild(map); | |
| 44 } | |
| 45 else if(list.getLength() == 1){ | |
| 46 map = (Element)list.item(0); | |
| 47 } | |
| 48 else{ | |
| 49 throw new Exception("Error while creating map node."); | |
| 50 } | |
| 51 return map; | |
| 52 } | |
| 53 | |
| 54 /** | |
| 55 * Add a layer element to the map. | |
| 56 * @param name The layer name. | |
| 57 * @return The layer element. | |
| 58 */ | |
| 59 public Element addLayer() | |
| 60 throws Exception { | |
| 61 Element node = creator.create("layer"); | |
| 62 NodeList list = root.getElementsByTagName("map"); | |
| 63 if(list == null || list.getLength() == 0){ | |
| 64 throw new Exception("No map node found!"); | |
| 65 } | |
| 66 else if(list.getLength() > 1) { | |
| 67 throw new Exception("Found more than one map node." + | |
| 68 " This should never happen!"); | |
| 69 } | |
| 70 else { | |
| 71 list.item(0).appendChild(node); | |
| 72 return node; | |
| 73 } | |
| 74 } | |
| 75 | |
| 76 /** | |
| 77 * Add a renderer element to the map. | |
| 78 * @param layer The parent layer element. | |
| 79 * @return The renderer element. | |
| 80 */ | |
| 81 public Element addRenderer(Element layer) { | |
| 82 Element node = creator.create("renderer"); | |
| 83 layer.appendChild(node); | |
| 84 return node; | |
| 85 } | |
| 86 | |
| 87 /** | |
| 88 * Add a symbol element to the map. | |
| 89 * @param renderer The parent renderer element. | |
| 90 * @return The symbol element. | |
| 91 */ | |
| 92 public Element addSymbol(Element renderer) { | |
| 93 Element node = creator.create("symbol"); | |
| 94 renderer.appendChild(node); | |
| 95 return node; | |
| 96 } | |
| 97 | |
| 98 /** | |
| 99 * Print out the XML document. | |
| 100 */ | |
| 101 public void print() { | |
| 102 XMLUtils.toStream(root, System.out); | |
| 103 } | |
| 104 } |