Re: [cdt-dev] How to get the current IProject during build

[wwarren <wwarren@xxxxxxxxxxx>]

If I had the 'IResource' I would effectively also have the 'IProject'
since the resource from which I wish to retrive the IPathVariableManager
is a project-type resource. There should really be a guarantee that the
IProject/IResource returned actually refers to the project being built
by the MBS since calling getProject() on a different resource could do
either of the following:

-return null if it the IResource is actually a IWorkspace, or
-return the wrong IProject (since not just -any- project will do...we
want the project currently being built) 

I suspect that there might be a build-time object accessible through
some static method (which I just don't know about yet) that refers to
the project currently being built.

Anyone have any ideas of how to get the current project being built at
the time that the IDynamicVariableResolver's resolveValue() method is
called? Thanks!

Wayne


On Sat, 2011-03-05 at 12:27 +0900, Petri Tuononen wrote:
> I found this from
> http://dev.eclipse.org/newslists/news.eclipse.platform.swt/msg23281.html
> "In any case, there's no 'Active' project; but what you can do is find the currently selected item, then find out what it belongs to. From the IResource, you can get IProject. To track selections, use the ISelectionListener to be notified when the selection changes."
> You can get IProject by calling IResource.getProject().
> 
> Petri
> 
> On 03/05/2011 02:34 AM, wwarren wrote: 
> > Greetings,
> > 
> > I have implemented the IDynamicVariableResolver interface to produce
> > workspace and project variables for use in a MBS tool. My current
> > problem is that I cannot figure out how to get a hold of the
> > project-scoped variable stored from within the MBSCustomPage extension I
> > wrote to extend the CDTProjectWizard.
> > 
> > The simplest solution I can think of to get a hold of the project-scoped
> > variable is to get the IPathVariableManager through the IProject.
> > However, I have not figured out how to get the IProject. I have read the
> > Help Documentation and the MBSE Document but have been unable to find
> > what I am looking for.
> > 
> > The steps I plan to take to solve this problem are as follows:
> > 
> > 1. I will run my plugin with the Eclipse debugger thing attached and
> > purposely generate a null pointer exception from within the
> > resolveValue() function so that I can view the the stack trace for clues
> > as to what class/package might give me access to the current project. I
> > actually just thought of doing this while writing the e-mail...I don't
> > know how effective it will be, but it's better than sitting on my
> > thumbs.
> > 
> > 2. I will afterward download as much of the MBS source code as I can
> > find from the eclipse CVS respository and try to understand better what
> > happens after the build is initiated through the Project menu or the
> > Project Explorer context menu. I am sure there must be a way to have my
> > plugin notified of that event or detect it from within the
> > resolveValue() function through the ResourcesPlugin, though I am
> > doubtful as to whether the API exposes this functionality. If I could
> > create a class that gets notified of this event, I would create a
> > workspace variable that has as its value the name of the project for
> > which the build was initiated...which could then be used to get a handle
> > on the project during the resolveValue() function. 
> > 
> > 3. If all else fails, I will learn how to use some standard Java XML
> > parser to get the necessary information from the .cproject file. I am
> > sure there are reasons not to do this such as changes to the XML file
> > format and naming conventions at the next Eclipse/CDT upgrade...so I
> > would prefer not to. Actually, I just realized that the .cproject is
> > stored within the project folder for which I would need the name of the
> > project to access. If I had that during the build, I would not need to
> > do this so...nevermind. Step 3 is probably not a potential solution.
> > 
> > If anyone on this list could offer me some advice or instruction about
> > how to approach this problem through any of the two options above, I
> > would appreciate it greatly. If not, have a nice weekend! I know I
> > will ;-].
> > 
> > Wayne
> > 
> > 
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> 
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