fix(flet-charts): Refactor chart event parser to overcome minification

[ndonkoHenri]

Fix #5219

Continuation of #3611

Summary by Sourcery

Refactor chart event parsing for flet-charts to use a type-based resolver function instead of a string-keyed map, ensuring event types are correctly identified in minified builds.

Bug Fixes:

• Fix event type resolution breakage under code minification by replacing runtimeType-to-string lookup.

Enhancements:

• Introduce resolveFlTouchEventType function with explicit type checks for all FlTouchEvent variants.
• Update all chart event data constructors to use the new resolver instead of the removed eventMap.

Chores:

• Remove the obsolete eventMap constant.

[sourcery-ai]

We've reviewed this pull request using the Sourcery rules engine

[Copilot]

Pull Request Overview

This PR refactors event type resolution across all chart components by replacing a runtime type string lookup with direct type checking. The change improves type safety and performance by using Dart's type system instead of string-based runtime type resolution.

Key Changes:

• Replaced the eventMap constant lookup with a new resolveFlTouchEventType() function that uses is type checks
• Updated all chart event data factories (bar, candlestick, line, pie, radar, scatter) to use the new function

Reviewed Changes

Copilot reviewed 7 out of 7 changed files in this pull request and generated 5 comments.

Show a summary per file

File	Description
sdk/python/packages/flet-charts/src/flutter/flet_charts/lib/src/utils/charts.dart	Removed eventMap constant and added resolveFlTouchEventType() function using type checks instead of string lookup
sdk/python/packages/flet-charts/src/flutter/flet_charts/lib/src/utils/bar_chart.dart	Updated BarChartEventData.fromDetails() to call resolveFlTouchEventType()
sdk/python/packages/flet-charts/src/flutter/flet_charts/lib/src/utils/candlestick_chart.dart	Updated CandlestickChartEventData.fromDetails() to call resolveFlTouchEventType()
sdk/python/packages/flet-charts/src/flutter/flet_charts/lib/src/utils/line_chart.dart	Updated LineChartEventData.fromDetails() to call resolveFlTouchEventType()
sdk/python/packages/flet-charts/src/flutter/flet_charts/lib/src/utils/pie_chart.dart	Updated PieChartEventData.fromDetails() to call resolveFlTouchEventType()
sdk/python/packages/flet-charts/src/flutter/flet_charts/lib/src/utils/radar_chart.dart	Updated RadarChartEventData.fromDetails() to call resolveFlTouchEventType()
sdk/python/packages/flet-charts/src/flutter/flet_charts/lib/src/utils/scatter_chart.dart	Updated ScatterChartEventData.fromDetails() to call resolveFlTouchEventType()

---

💡 Add Copilot custom instructions for smarter, more guided reviews. Learn how to get started.

[cloudflare-workers-and-pages]

Deploying flet-docs with    Cloudflare Pages

Latest commit:	94bab6d
Status:	⚡️  Build in progress...

View logs