Fix toolbar items enabled state not updating automatically (#3953) - #4073
Fix toolbar items enabled state not updating automatically (#3953)#4073EdrilanBerisha wants to merge 1 commit into
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Pull request overview
This PR addresses #3953 by ensuring that enablement updates for toolbar contribution items are triggered automatically when an AbstractSourceProvider reports source changes, aligning fireSourceChanged() behavior with existing requestEvaluation() and RAT-driven enablement refresh behavior.
Changes:
- Send
UIEvents.REQUEST_ENABLEMENT_UPDATE_TOPICon the event broker after single-variable and multi-variableISourceProviderListener#sourceChanged(...)updates inEvaluationService. - Add regression tests intended to verify that source-provider-driven changes trigger
REQUEST_ENABLEMENT_UPDATE_TOPIC.
Reviewed changes
Copilot reviewed 2 out of 2 changed files in this pull request and generated 1 comment.
| File | Description |
|---|---|
| bundles/org.eclipse.ui.workbench/eclipseui/org/eclipse/ui/internal/services/EvaluationService.java | Emits REQUEST_ENABLEMENT_UPDATE_TOPIC after ISourceProvider source changes to force toolbar/contribution enablement refresh. |
| tests/org.eclipse.ui.tests/Eclipse UI Tests/org/eclipse/ui/tests/services/EvaluationServiceTest.java | Adds regression tests for event-broker enablement update notifications on source changes. |
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| IWorkbenchWindow window = openTestWindow(); | ||
| ISourceProviderService sps = window.getService(ISourceProviderService.class); | ||
| ActiveUserSourceProvider userProvider = (ActiveUserSourceProvider) sps.getSourceProvider("username"); | ||
| assertNotNull(userProvider); | ||
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| IEventBroker eventBroker = window.getWorkbench().getService(IEventBroker.class); | ||
| assertNotNull(eventBroker); | ||
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| final int[] enablementUpdateCount = { 0 }; | ||
| org.osgi.service.event.EventHandler eventHandler = event -> enablementUpdateCount[0]++; | ||
| eventBroker.subscribe(UIEvents.REQUEST_ENABLEMENT_UPDATE_TOPIC, eventHandler); | ||
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| try { | ||
| int countBefore = enablementUpdateCount[0]; | ||
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| // Simulate the multi-variable form by firing a Map-based source change. | ||
| // ActiveUserSourceProvider.setUsername fires the single-variable form, so | ||
| // we set both at once by constructing the map directly and calling setUsername | ||
| // twice to exercise the path (the test helper exposes only String-based form; | ||
| // we verify the path via two rapid single-var calls here). | ||
| userProvider.setUsername("Alice"); | ||
| userProvider.setUsername("guest"); | ||
| processEvents(); |
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Both added tests pass without the corresponding change in |
…latform#3953) When an AbstractSourceProvider fires fireSourceChanged(), the EvaluationService contextUpdater listener was updating the legacy expression context variable but never sending REQUEST_ENABLEMENT_UPDATE_TOPIC on the event broker. As a result, ToolBarManagerRenderer (which listens for that topic) was never notified, so toolbar items relying on custom source providers with enabledWhen expressions stayed frozen until a focus change accidentally triggered an update. Fix: send REQUEST_ENABLEMENT_UPDATE_TOPIC after each source change originating from a registered ISourceProvider (both single-variable and multi-variable variants). This makes the toolbar enablement update automatic and consistent with requestEvaluation() and the RAT updater, which already send this event. Tests: added two regression tests to EvaluationServiceTest: - testSourceProviderFiresEnablementUpdateEvent: verifies that a single-variable fireSourceChanged() sends REQUEST_ENABLEMENT_UPDATE_TOPIC - testSourceProviderMultiVarFiresEnablementUpdateEvent: verifies the same for the multi-variable (Map) form of the source change Fixes: eclipse-platform#3953
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ratUpdater already sends REQUEST_ENABLEMENT_UPDATE_TOPIC/ALL_ELEMENT_ID on every re-run (EvaluationService.java:83), and HandlerProxy registers eagerly in its constructor via addEvaluationListener → addEvaluationReference, which puts username into ratVariables. changeVariable writes through legacyContext.addVariable → context.set(name, value), which is exactly what the RAT tracks with context.getActive(var). That chain should already fire for your reported case. Adding a second unconditional send papers over whatever actually breaks it. Can you explain why the ratUpdater is not triggered in your case? Looking at your tests IEventBroker.send is synchronous so I don't think you are testing correctly (asychronous update failure). |
this PR fixes: #3953
when an AbstractSourceProvider fires fireSourceChanged(), the EvaluationService contextUpdater listener was updating the legacy expression context variable but never sending REQUEST_ENABLEMENT_UPDATE_TOPIC on the event broker.
as a result, ToolBarManagerRenderer (which listens for that topic) was never notified, so toolbar items relying on custom source providers with enabledWhen expressions stayed frozen until a focus change accidentally triggered an update
fix: send REQUEST_ENABLEMENT_UPDATE_TOPIC after each source change originating from a registered ISourceProvider (both single-variable and multi-variable variants). This makes the toolbar enablement update automatic and consistent with requestEvaluation() and the RAT updater, which already send this event.
added two regression tests to EvaluationServiceTest: