Mercurial > dive4elements > river
diff 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> |
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date | Wed, 16 Feb 2011 14:50:06 +0000 |
parents | |
children | 924da6695800 |
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--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/flys-client/src/main/java/de/intevation/flys/client/client/Config.java Wed Feb 16 14:50:06 2011 +0000 @@ -0,0 +1,72 @@ +package de.intevation.flys.client.client; + +import com.google.gwt.xml.client.Document; +import com.google.gwt.xml.client.Node; + + +/** + * A class that is used to handle the global configuration of this client. You + * can retrieve an instance of this class using the <code>getInstance</code> + * methods. <b>NOTE:</b> the configuration is initialized using {@link + * getInstance(Document)} the first time. + * + * @author <a href="mailto:ingo.weinzierl@intevation.de">Ingo Weinzierl</a> + */ +public class Config { + + /** The instance of the configuration. */ + protected static Config INSTANCE; + + /** The xml document that contains the configuration options.*/ + protected Document config; + + + /** + * Get an instance by using {@link getInstance(Document)} or {@link + * getInstance()}. + */ + private Config(Document config) { + this.config = config; + } + + + /** + * Returns an instance of this class and initializes the configuration of + * this has not been done so far. + * + * @param config The client configuration. + * + * @return an instance of this Config class. + */ + public static Config getInstance(Document config) { + if (INSTANCE == null) { + INSTANCE = new Config(config); + } + + return INSTANCE; + } + + + /** + * Returns an instance of this class. If it has not been initialized with a + * valid configuration, null is returned. + * + * @return an instance of this class or null, if the Config has not been + * initialized using {@link getInstance(Document)} so far. + */ + public static Config getInstance() { + return INSTANCE; + } + + + /** + * Returns the URL of the artifact server. + * + * @return the artifact server url. + */ + public String getServerUrl() { + Node server = config.getElementsByTagName("server").item(0); + return server.getFirstChild().getNodeValue(); + } +} +// vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 :