There is currently discussion about whether to discontinue the stand-alone bundle.
The current bundle does not support dependency management or bundled dependencies for Ivy (used for Vaadin 7), and would need to be redesigned completely to do so.
Note that the plug-in normally uses dependency management (Ivy) for getting Vaadin and all its dependencies. You should have access to public Maven repositories (directly or via a proxy) to get those, or manually install them JAR by JAR to your local repository. If I remember correctly, the plug-in also checks for the latest version on-line when creating a project, which might or might not be a problem.
You might be able to download the individual files of the update site as a local update site and install from there. In that case, you would also need to get the IvyDE plug-in separately.
I’ve downloaded the IvyDE plug-in separately but i’m having trouble doing the same with vaadin plugin. If someone could write some kind of step by step on how to install vaadin 7 plugin in offline mode it would be great.
I have the same issue, and tried to use the Eclipse p2 mirror feature as i do for other products.
Command Line i use is:
eclipse -nosplash -writeMode clean -verbose -consoleLog
-application org.eclipse.equinox.p2.artifact.repository.mirrorApplication
-source http://vaadin.com/eclipse -destination myLocalRepository