Welcome page allows multiple copies of the same graph to open, throwing exceptions

[Auriga2]

Prerequisites

• [ ] Put an X between the brackets on this line if you have done all of the following:

  • Running the latest version of Constellation

  • Attached the Support Package via Help > Support Package

  • Checked the FAQs: https://github.com/constellation-app/constellation/wiki/FAQ

  • Checked that your issue isn’t already filed: https://github.com/constellation-app/constellation/issues

  • Checked that there is not already a module that provides the described functionality: https://github.com/constellation-app/constellation/wiki/Catalogue-of-Repositories

Description

Recent graphs in the Welcome page can be clicked multiple times, which opens the same graph in multiple tabs.

If you do this on a larger graph, constellation can run out of memory and stuck.

Clicking on these graphs/tabs while partially loading throws this exception.

Steps to Reproduce

1. Open constellation, open a larger graph and close the app which will add it in the Recent section in the Welcome page.

2. Open constellation and double click on the graph above in the Welcome page

3. Observe it creating 2 graphs.

4. Clicking on the graph above in the Welcome page multiple times can cause the 1st exception

5. Clicking on the graph above in the Welcome page a few times and clicking on these graphs/tabs that are partially loading can cause the 1st exception

Expected behaviour: Welcome page not allowing to open multiples of the same graph and no exceptions thrown

Actual behaviour: Welcome page allows to open multiples of the same graph and exceptions are thrown

Reproduces how often: 90% with a larger graph

Additional Information

Observed in v3.0.0.-rc1 Same behavior in v2.11