feat: add tooltips to auto-attached export icons

[paodb]

Close #114.

• Adds default tooltips (Export to Excel/Word/PDF/CSV) to the four auto-attached export icons rendered by GridExporter.createFor.
• Exposes set*ExportTooltipText(String) for simple overrides. Pass null to opt out of a specific tooltip entirely.
• Exposes set*ExportTooltipConfigurator(SerializableConsumer<Tooltip>) for advanced customization (position, opening delay, etc.); receives the live Vaadin Tooltip instance at attach time.
• Demo updated in GridExporterDemo to showcase both the text override (Excel) and the configurator (CSV → TooltipPosition.TOP).
• Version updated to 3.1.0-SNAPSHOT

Summary by CodeRabbit

• New Features

  • Added customizable tooltips for Excel, Word (DOCX), PDF, and CSV export buttons, including configurable text and appearance.

• Chores

  • Updated project version to 3.1.0-SNAPSHOT.

[coderabbitai]

Walkthrough

The PR adds per-export tooltip support to GridExporter, allowing users to configure tooltip text and behavior for Excel, DOCX, PDF, and CSV export buttons. Public setter methods enable customization before grid attachment, applied via a shared helper during grid setup. The version bumps to 3.1.0-SNAPSHOT.

Changes

Export Tooltip Configuration Feature

Layer / File(s)	Summary
Tooltip API and Core Implementation src/main/java/com/flowingcode/vaadin/addons/gridexporter/GridExporter.java	Introduces Tooltip import, internal fields to store per-export tooltip text and configurators, a private helper method to conditionally create and configure Tooltip instances, and public setter methods for each export type (text and configurator variants).
Tooltip Application During Grid Attachment src/main/java/com/flowingcode/vaadin/addons/gridexporter/GridExporter.java	During grid attachment in createFor(), applies stored tooltip text and configurators to each export button (Excel, DOCX, PDF, CSV) via the shared applyExportTooltip helper method.
Demo and Test Usage src/test/java/com/flowingcode/vaadin/addons/gridexporter/GridExporterDemo.java	GridExporterDemo imports Tooltip and demonstrates the API by setting Excel export tooltip text, configuring the CSV tooltip position to TOP via a configurator, and disabling the PDF export tooltip by setting its text to null.
Version Bump pom.xml	Project version incremented from 3.0.1-SNAPSHOT to 3.1.0-SNAPSHOT.

Estimated code review effort

🎯 2 (Simple) | ⏱️ ~12 minutes

Suggested reviewers

• mlopezFC

🚥 Pre-merge checks | ✅ 4 | ❌ 1

❌ Failed checks (1 warning)

Check name	Status	Explanation	Resolution
Docstring Coverage	⚠️ Warning	Docstring coverage is 57.14% which is insufficient. The required threshold is 80.00%.	Write docstrings for the functions missing them to satisfy the coverage threshold.

✅ Passed checks (4 passed)

Check name	Status	Explanation
Title check	✅ Passed	The pull request title 'feat: add tooltips to auto-attached export icons' clearly and concisely summarizes the main change: adding tooltip functionality to export icons.
Linked Issues check	✅ Passed	The PR fully implements the coding requirements from #114: it assigns default tooltips to export icons and provides public API methods (setExportTooltipText and setExportTooltipConfigurator) for users to override defaults.
Out of Scope Changes check	✅ Passed	All changes are scope-appropriate: tooltip implementation for export icons directly fulfills #114 requirements, version bump is standard practice for feature releases, and demo updates showcase the new functionality.
Description Check	✅ Passed	Check skipped - CodeRabbit’s high-level summary is enabled.

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✨ Finishing Touches

📝 Generate docstrings

• Create stacked PR
• Commit on current branch

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Commit unit tests in branch issue-114

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[coderabbitai]

Actionable comments posted: 1

🤖 Prompt for all review comments with AI agents

Verify each finding against current code. Fix only still-valid issues, skip the
rest with a brief reason, keep changes minimal, and validate.

Inline comments:
In `@src/main/java/com/flowingcode/vaadin/addons/gridexporter/GridExporter.java`:
- Around line 236-247: applyExportTooltip currently creates a Tooltip whenever a
configurator is provided, which prevents honoring null as "disable tooltip";
change applyExportTooltip so that if text is null it does not create or modify a
Tooltip even when a configurator is non-null — i.e., short-circuit before
calling Tooltip.forComponent(component) when text == null (unless you intend
null to only disable default text, in which case update docs instead); locate
applyExportTooltip, remove or bypass the Tooltip.forComponent(...) and
configurator.accept(...) calls when text is null, ensuring tooltip.setText(text)
and configurator.accept(tooltip) only run on a non-null text (or adjust docs if
you prefer the other behavior).

🪄 Autofix (Beta)

Fix all unresolved CodeRabbit comments on this PR:

• Push a commit to this branch (recommended)
• Create a new PR with the fixes

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ℹ️ Review info

⚙️ Run configuration

Configuration used: Organization UI

Review profile: CHILL

Plan: Pro

Run ID: 5af98e59-8e2b-4be8-9b9a-dea50ef4bce8

📥 Commits

Reviewing files that changed from the base of the PR and between 34f85d0 and b38c207.

📒 Files selected for processing (3)

• pom.xml
• src/main/java/com/flowingcode/vaadin/addons/gridexporter/GridExporter.java
• src/test/java/com/flowingcode/vaadin/addons/gridexporter/GridExporterDemo.java

[sonarqubecloud]

Quality Gate passed

Issues
0 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

[paodb]

@coderabbitai full review

[coderabbitai]

✅ Actions performed

Full review triggered.