Google I/O 2010 – GWT’s UI overhaul javadocs package com.google.gwt.cell.client in 2.1 Eclipse update site for milestone 2 While the code is in bikeshed, add this line to your gwt.xml file: <inherits name=”com.google.gwt.requestfactory.RequestFactory”/> The following examples follow: CellList of TextCells with PageSizePager CellList of TextCells with a SimplePager CellList of TextCells with a SimplePager and … Read more
Events in general: Events are always sent to inform about something (e.g. a change of state). Let’s take your example with a man and a wall. Here we can imagine that there is a game where a user can walk as a man in a labyrinth. Every time a user hits the wall it should … Read more
Check that Xerces exists in: $JAVA_HOME/lib/endorsed Sounds like a Java 5 issue. Also check the Java system property for: javax.xml.parsers.SAXParserFactory It should be: org.apache.xerces.jaxp.SAXParserFactoryImpl If not then that’s your issue, make sure you set the system property.
You REALLY need to distinguish between GWT client side java code and server side java code. On the client side in your GWT Java Code String url = GWT.getModuleBaseURL() + “downloadService?fileInfo1=” + fileInfo1; Window.open( url, “_blank”, “status=0,toolbar=0,menubar=0,location=0”); On server side in your non-gwt Java code- In web.xml <servlet> <servlet-name>downloadService</servlet-name> <servlet-class>AAA.BBB.CCC.DownloadServlet</servlet-class> </servlet> <servlet-mapping> <servlet-name>downloadService</servlet-name> <url-pattern>/<gwtmodulename>/downloadService</url-pattern> </servlet-mapping> … Read more
When you deploy a GWT-application it’s important to avoid proxies and browsers to cache the .nocache.js-files generated by GWT. One solution is to implement a servlet filter that adds the necessary HTTP-headers that control the caching behaviour. Here’s such a filter: http://seewah.blogspot.com/2009/02/gwt-tips-2-nocachejs-getting-cached-in.html The headers in that example are: Date: Wed, 24 Nov 2010 20:32:43 GMT … Read more
When passing objects across RPC call’s its a good practice to declare concrete parameter types in the RPC interface. If for some reason you cannot use concrete class in the RPC interface try to be as specific as possible. This is because the GWT compiler while emitting javascript has to take into account all possible … Read more
Let me explain a bit more about exporting GWT stuff to the JS world. You have several options to do that, but I will focus on three methods. [EDITED] 0- JsInterop: GWT maintainers are working in a new feature to easily export java methods to javascript, and wrap javascript objects. The feature was very experimental … Read more
There’s a workaround: define a new Dummy class with member fields of all the types that you want to be included in serialization. Then add a method to your RPC interface: Dummy dummy(Dummy d); The implementation is just this: Dummy dummy(Dummy d) { return d; } And the async interface will have this: void dummy(Dummy … Read more
You can use Class.isArray() public static boolean isArray(Object obj) { return obj!=null && obj.getClass().isArray(); } This works for both object and primitive type arrays. For toString take a look at Arrays.toString. You’ll have to check the array type and call the appropriate toString method.
You could look at the following options. http://code.google.com/p/gwt-time/ http://code.google.com/p/goda-time/ http://github.com/mping/gwt-joda-time