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Custom TemplateNewFileWizard [message #1803869]

Tue, 12 March 2019 13:11

Eclipse User

Hello,

I am creating a custom TemplateNewFileWizard, so I created a class MyNewFileWizard that extends TemplateNewFileWizard.
I already made a customized TemplateNewProjectWizard the same way. There I created a custom ProjectInformation that implements IExtendedProjectInfo so I could pass all the acquired information (wizard input) to the template creation in MyDSLProjectTemplateProvider.xtend .
In the FileWizard the information about the file to be created is stored in org.eclipse.xtext.ui.wizard.template.TemplateFileInfo. I created my own MyTemplateFileInfo class to store the user input and noticed that setTemplateInfo(TemplateFileInfo info) in org.eclipse.xtext.ui.wizard.template.AbstractFileTemplate is package protected. So I can't set the TemplateInfo, which is usually done in TemplateNewFileWizard.getNextPage(page). Here the method getFileInfo() (returns TemplateFileInfo) is called, instead of my getFileInfo() (returns MyTemplateFileInfo) in the subclass. So the template ends up without info.

The problem is that everything is connected and that I can't use the @FileTemplate annotation with anything other than AbstractFileTemplate. Do I really need to create my own annotation (if yes, how?) to access the user input or is there another way?

I hope I asked my question so you can understand the problem. Thanks a lot in advance.

[Updated on: Thu, 14 March 2019 06:20] by Moderator

Re: Custom TemplateNewFileWizard [message #1803960 is a reply to message #1803869]

Thu, 14 March 2019 07:09

Eclipse User

I understand that making setFileInfo package projected was a mistake. Would you agree that you would have no issue if that would be protected? If so I would make it so with the next release.

For the meantime I see two ways for you to workaround the issue.
1. Use reflection to call setFileInfo method.
2. Create your own subclass of AbstractFileTemplate. Appart from the automatic internationalization everything should work. The annotation does only three things for you: automatically extending the AbstractFileTemplate (you can do that yourself), providing description and icon path (you should be able to override the correct methods and return strings from code), updateing the internationalization files (you would then have to do it manually).

Does this work for you?

Re: Custom TemplateNewFileWizard [message #1803974 is a reply to message #1803960]

Thu, 14 March 2019 11:59

Eclipse User

Thanks for your reply. Yes I think my problem would be solved if setFileInfo was not package protected.
Your second workaround works for me, thanks.

Since you're allready here, I have a second question about the TemplateNewFileWizard: Access to the grammar happens via the Guice Injection Factory
(class="MyDSLExecutableExtensionFactory:org.eclipse.xtext.ui.wizard.template.TemplateNewFileWizard" in plugin.xml)
I want my Wizard to be opened through a command extension point
(defaultHandler="MyDSLExecutableExtensionFactory:SomeHandler")
Do you have a tip how I could pass grammarAccess, labelProvider and fileOpener to the TemplateNewFileWizard?

Thanks a lot!

Re: Custom TemplateNewFileWizard [message #1803986 is a reply to message #1803974]

Thu, 14 March 2019 16:20

Eclipse User

you should be able to @Inject MyService all services into a handler or wizard class if it is created via class="MyDSLExecutableExtensionFactory:MyService"
you can inject a Provider<YourClass> myProvider and call myProvider.get() to get instances with injected services too.

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