This reference is for people that would like to develop on GWT-OpenLayers itself. People that would just like to use GWT-OpenLayers in their projects should check out the user reference.
GWT-OpenLayers uses Mercurial for version control. For the uninitiated to Mercurial, check out the excellent hginit tutorial, or read up in the hgbook. You can download a Mercurial commandline client here, or use an IDE plugin like MercurialEclipse.
The easiest way to start developing on GWT-OpenLayers is by cloning the public central Mercurial repository:
http://gwt-openlayers.hg.sourceforge.net:8000/hgroot/gwt-openlayers/gwt-openlayers
This repository can be cloned anonymously.
Once you cloned the public repository you got your own local copy of the repository to work with. If you want to contribute code, make sure you have tested your changes to an up-to-date copy (by pulling the latest changes), and send us your exported changesets. See this page about communicating changesets.
Maven is used to build GWT-OpenLayers. Maven has good GWT support with the Maven GWT plugin. To build GWT-OpenLayers using Maven, open the commandline at gwt-openlayers-client and run:
>mvn package
This produces a GWT module jar that you can use in GWT applications. The server side part (currently consisting of an Ajax Proxy for by-passing the same origin policy) is packaged in the same way.
Here we will explain different ways to develop on different OS's
Some cookbook examples on how to extend GWT-OpenLayers
Currently, more information about developing GWT-OpenLayers is still found in our Trac wiki.