feat: Add high-level signal APIs

[Legioth]

No description provided.

[github-actions]

Test Results

1 192 files  + 10  1 192 suites  +10   1h 17m 53s ⏱️ -34s
8 316 tests +199  8 259 ✅ +199  57 💤 ±0  0 ❌ ±0 
8 687 runs  +257  8 621 ✅ +257  66 💤 ±0  0 ❌ ±0 

Results for commit 4253b58. ± Comparison against base commit 76562fb.

♻️ This comment has been updated with latest results.

[Copilot]

Pull Request Overview

This pull request introduces high-level signal APIs along with extensive tests that verify the behavior of various signal types (value, number, list, map, computed, and node signals). Key changes include new implementations for signal types and test cases for operations such as insertion, update, atomic increments, and verification conditions.

Reviewed Changes

Copilot reviewed 26 out of 26 changed files in this pull request and generated no comments.

File	Description
signals/src/test/java/com/vaadin/signals/impl/AsynchronousSignalTreeTest.java	Changed AsyncTestTree from package-private to public, expanding its visibility.
signals/src/main/java/com/vaadin/signals/*	New and updated signal API implementations for value, number, list, map, computed, and node signals.
signals/src/test/java/com/vaadin/signals/*	New test classes covering various signal operations and behaviors.

Comments suppressed due to low confidence (1)

signals/src/test/java/com/vaadin/signals/impl/AsynchronousSignalTreeTest.java:23

• [nitpick] The change from package-private to public increases exposure of the test class. If broader visibility is intended, consider adding a comment explaining the rationale; otherwise, reverting to a more restricted access modifier may be appropriate.

public static class AsyncTestTree extends AsynchronousSignalTree {

[taefi]

Decided to leave some comments as early as possible, since some of them affect the review process for the rest of the PR.

[taefi]

Second round.

[mshabarov]

Posting my first group of comments - reviewed Signal, SignalEnvironment, UsageTracker.

[mshabarov]

A second round - reviewed Effect, SignalFactory.

[mshabarov]

Reviewed ComputedSignal.

[mshabarov]

The unit-tests validation fails because of javadocs errors, e.g. empty return tag, but otherwise looks good to me.

[taefi]

Left two non-blocker comments, but generally, LGTM.

[Legioth]

Javadoc fixes pushed

[sonarqubecloud]

Quality Gate passed

Issues
54 New issues
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarQube Cloud

[vaadin-bot]

This ticket/PR has been released with Vaadin 24.8.0.alpha5 and is also targeting the upcoming stable 24.8.0 version.