Mercurial > dive4elements > river
comparison flys-client/src/main/java/de/intevation/flys/client/client/Config.java @ 9:8facd8545a12
Added a global configuration for the client and classes providing methods to retrieve these information.
flys-client/trunk@1317 c6561f87-3c4e-4783-a992-168aeb5c3f6f
| author | Ingo Weinzierl <ingo.weinzierl@intevation.de> |
|---|---|
| date | Wed, 16 Feb 2011 14:50:06 +0000 |
| parents | |
| children | 924da6695800 |
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| 8:9cb3ee7ed8ba | 9:8facd8545a12 |
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| 1 package de.intevation.flys.client.client; | |
| 2 | |
| 3 import com.google.gwt.xml.client.Document; | |
| 4 import com.google.gwt.xml.client.Node; | |
| 5 | |
| 6 | |
| 7 /** | |
| 8 * A class that is used to handle the global configuration of this client. You | |
| 9 * can retrieve an instance of this class using the <code>getInstance</code> | |
| 10 * methods. <b>NOTE:</b> the configuration is initialized using {@link | |
| 11 * getInstance(Document)} the first time. | |
| 12 * | |
| 13 * @author <a href="mailto:ingo.weinzierl@intevation.de">Ingo Weinzierl</a> | |
| 14 */ | |
| 15 public class Config { | |
| 16 | |
| 17 /** The instance of the configuration. */ | |
| 18 protected static Config INSTANCE; | |
| 19 | |
| 20 /** The xml document that contains the configuration options.*/ | |
| 21 protected Document config; | |
| 22 | |
| 23 | |
| 24 /** | |
| 25 * Get an instance by using {@link getInstance(Document)} or {@link | |
| 26 * getInstance()}. | |
| 27 */ | |
| 28 private Config(Document config) { | |
| 29 this.config = config; | |
| 30 } | |
| 31 | |
| 32 | |
| 33 /** | |
| 34 * Returns an instance of this class and initializes the configuration of | |
| 35 * this has not been done so far. | |
| 36 * | |
| 37 * @param config The client configuration. | |
| 38 * | |
| 39 * @return an instance of this Config class. | |
| 40 */ | |
| 41 public static Config getInstance(Document config) { | |
| 42 if (INSTANCE == null) { | |
| 43 INSTANCE = new Config(config); | |
| 44 } | |
| 45 | |
| 46 return INSTANCE; | |
| 47 } | |
| 48 | |
| 49 | |
| 50 /** | |
| 51 * Returns an instance of this class. If it has not been initialized with a | |
| 52 * valid configuration, null is returned. | |
| 53 * | |
| 54 * @return an instance of this class or null, if the Config has not been | |
| 55 * initialized using {@link getInstance(Document)} so far. | |
| 56 */ | |
| 57 public static Config getInstance() { | |
| 58 return INSTANCE; | |
| 59 } | |
| 60 | |
| 61 | |
| 62 /** | |
| 63 * Returns the URL of the artifact server. | |
| 64 * | |
| 65 * @return the artifact server url. | |
| 66 */ | |
| 67 public String getServerUrl() { | |
| 68 Node server = config.getElementsByTagName("server").item(0); | |
| 69 return server.getFirstChild().getNodeValue(); | |
| 70 } | |
| 71 } | |
| 72 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 : |