Fix vanishing markers when no resource is selected in Problems view

[vogella]

Problem

When the filter scope in the Problems view is set to a selection-dependent value (e.g., 'Selected resource', 'Same project', 'Same container') and no resource is currently selected in the Project Explorer, selectByScope() returns false for every marker. This makes the entire Problems view appear empty — users must re-select something in the explorer to see markers again.

Fix

In MarkerFieldFilterGroup.selectByScope(), when the resources array is empty and the scope depends on selection (ON_SELECTED_ONLY, ON_SELECTED_AND_CHILDREN, ON_ANY_IN_SAME_CONTAINER), fall back to ON_ANY behavior (show all) instead of returning false (show nothing).

Files Changed

• MarkerFieldFilterGroup.java — 4-line guard clause in selectByScope()
• MarkerFieldFilterGroupTest.java — New test class with 8 tests covering all scope + empty-resources combinations
• InternalTestSuite.java — Register new test class

Testing

• New MarkerFieldFilterGroupTest verifies all scope values with both empty and non-empty resource arrays
• Verified compilation with mvn clean compile -pl :org.eclipse.ui.ide -Pbuild-individual-bundles

[github-actions]

Test Results

   852 files     852 suites   52m 47s ⏱️
 7 902 tests  7 659 ✅ 243 💤 0 ❌
20 208 runs  19 553 ✅ 655 💤 0 ❌

Results for commit 4ac15a8.

♻️ This comment has been updated with latest results.

[eclipse-eca-validation]

Hi @vogella — thank you for your contribution!

The Eclipse Contributor Agreement (ECA) check has failed for this pull request due to one of the following reasons:

• Committing user must have an Eclipse Account
• Author must have an Eclipse Account

To resolve this, please:

1. Sign in or create an Eclipse Foundation account: https://accounts.eclipse.org/user/eca
2. Ensure your GitHub username is linked to your Eclipse account
3. Complete and submit the ECA form

Once done, push a new commit (or rebase) to re-trigger the ECA validation.

If you believe you've already completed these steps, please double-check your account settings or report an issue to Eclipse Foundation Helpdesk.

Thanks again for your contribution!

[vogella]

Old:

No indicator that the detailed selection does not count:

New:

Show all indicates that the other UI elements are disabled:

Scope is drop-down box to save space

Types can be extended as drop-down.

[vogella]

Latest UI

[iloveeclipse]

and no resource is currently selected in the Project Explorer, selectByScope() returns false for every marker. This makes the entire Problems view appear empty — users must re-select something in the explorer to see markers again.

This is correct behavior, where is the problem?
Now assume the workspace has 1000 projects, each 100 markers, according to this proposal, if nothing is selected, one would see 100.000 problems in the Problems view? Why should it be better, for which use case should it be helpful?