Description Alex Ruiz 2011-06-15 19:28:22 EDT

Build Identifier: I20110526-1708

When changing preferences for a particular project, the changes get saved to all the projects in the workspace.

After some debugging, I think the problem is in PreferenceStoreAccessImpl, in the method getWritablePreferenceStore(Object), line 59:

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	public IPreferenceStore getWritablePreferenceStore(Object context) {
		lazyInitialize();
		if (context instanceof IFileEditorInput) {
			context = ((IFileEditorInput) context).getFile().getProject();
		}
		if (context instanceof IProject) {
			ProjectScope projectScope = new ProjectScope((IProject) context);
			ScopedPreferenceStore result = new ScopedPreferenceStore(projectScope, getQualifier());
			result.setSearchContexts(new IScopeContext[] {
				projectScope,
				new InstanceScope(),
				new ConfigurationScope()
			});
		}
		return getWritablePreferenceStore();
	}


when the context is a IProject, this method creates a ScopedPreferenceStore using the passed IProject as one of the scopes. I think the problem is, the created ScopedPreferenceStore is never returned, instead, this method always returns the one from getWritablePreferenceStore().


Reproducible: Always

Steps to Reproduce:
This is my use case. I have a Xtext-based editor that has preference pages at the project level. Every time I save preferences for one project, the rest of projects in the same workspace get such preferences as well.

Reference: http://www.eclipse.org/forums/index.php/m/677591/#msg_677591