Bug 982310

Description of problem:
If a new project of any kind (including PyDev projects) is added to a Working Set upon creation, it will not immediately appear in the PyDev Package Explorer. This happens only if Working Sets are the top level elements, and if the W.Set the project was added to is the selected W.Set. To get the project to appear, you have to reselect the Working Set, or switch to Projects as the top-level elements (or switching to Projects and back to W.Sets).

Steps to Reproduce:
1. Enter the PyDev perspective, and in the PyDev Package Manager, select Working Sets as the top level elements. (Do so with the drop-down menu in the top-right corner of the PyDev P.Manager.)
2. In the PyDev Package Explorer, select a Working Set with the drop-down menu. (If none yet exist, create one.)
3. Create a new project. Make sure the New Project Wizard allows you to add it to a Working Set, and add the project to the Working Set you selected in Step 2.

Actual results:
The project is created but it doesn't appear in the PyDev Package Explorer.

Expected results:
The PyDev Package Explorer displays the newly-created project.

Additional info:
If Working Sets are the top level elements but no single Working Set is selected, the PyDev P.Manager always displays newly-created projects that were added to Working Sets. In that case, a project is selected and revealed in one of the W.Sets it was added to.

Furthermore, this problem doesn't happen when Projects are the top-level elements, whether or not a Working Set is selected. In that scenario, after the project is created, and if the W.Set the project was added to is the selected one, it immediately appears in the PyDev P.Manager without having to refresh it or reselect anything. This should happen even when W.Sets are the top level elements.

This problem also doesn't apply for the non-PyDev Package Manager, such as the one used by the Java Perspective.