Refactor and Bug Fixes for Widgets:

Increment/Decrement,
Expandable List,
Custom Action Button,
and List Tile Buttons

Summary

This PR includes refactoring, improvements, and bug fixes for the following files:

• increment_decrement_widget.dart
• expandable_list_tile_button.dart
• custom_action_button.dart
• list_tile_button.dart

These changes address functional improvements, fix issues related to widget behavior, enhance UI consistency, and ensure better state management across the application.

Changes:

• increment_decrement_widget.dart:

  • Refactored logic for increment and decrement actions.
  • Improved state management to prevent unnecessary rebuilds.
  • Optimized performance by minimizing widget rebuilds when the quantity changes.
  • Enhanced input validation to handle edge cases gracefully.

• expandable_list_tile_button.dart:

  • Enhanced the UI for smoother expand/collapse animations.
  • Fixed issues where the button would not expand or collapse under certain conditions.
  • Improved state transitions for better performance and user experience.
  • Refactored code for better readability and maintenance.

• custom_action_button.dart:

  • Fixed initialization issues with CustomActionButton, especially concerning the ScrollController in a DraggableScrollableSheet.
  • Improved button state management to ensure correct enable/disable behavior.
  • Added support for customizable shapes, padding, and other styling options.
  • Enhanced accessibility by ensuring proper focus and semantics.

• list_tile_button.dart:

  • Alignment Fixes:
    • Resolved vertical alignment issues in ListTileButton and IconListTileButton.
    • Ensured icons are vertically centered within the buttons.
    • Adjusted leading and trailing widgets for consistent alignment.
  • Interaction Improvements:
    • Moved padding under the InkWell widget to ensure the entire button area is clickable, including padding.
    • Ensured that tap events cover the full button, enhancing user experience.
  • Customization Enhancements:
    • Reintroduced and improved the sizeFactor parameter in IconListTileButton to allow dynamic resizing of icons relative to text.
    • Allowed developers to customize icon sizes easily without affecting alignment.
  • Code Refactoring:
    • Simplified the widget tree to let ListTile manage its own layout for better consistency and alignment.
    • Refactored RoundedContainer to remove unnecessary padding and margins, ensuring compatibility with Material and InkWell.
    • Improved code readability and maintainability by removing redundant code and simplifying widget structures.

Testing:

• General Testing:

  • Added and updated test cases to cover various functionalities and edge cases.
  • Ensured that all widgets behave correctly with different inputs and states.

• increment_decrement_widget.dart Tests:

  • Tested increment/decrement functionality with various input values, including boundary conditions.
  • Verified that the widget handles maximum and minimum quantity limits correctly.

• expandable_list_tile_button.dart Tests:

  • Ensured that the expandable button expands and collapses smoothly.
  • Tested state transitions and verified that the content displays correctly upon expansion.

• custom_action_button.dart Tests:

  • Verified that custom action buttons initialize correctly with various configurations.
  • Tested button interactions, ensuring that onPressed and onLongPress callbacks function as expected.

• list_tile_button.dart Tests:

  • Rendering and Interaction:
    • Verified that ListTileButton renders correctly with all combinations of leading, title, subtitle, and trailing widgets.
    • Confirmed that buttons respond to tap events and trigger the appropriate callbacks.
  • Icon Alignment:
    • Tested IconListTileButton with different sizeFactor values to ensure icons resize properly and remain vertically centered.
    • Verified that the icon size adjusts according to the sizeFactor without affecting alignment.
  • Clickable Area:
    • Confirmed that the entire button area, including padding, is clickable.
    • Ensured that moving the padding under InkWell does not affect the visual appearance but improves interaction.

Fixes:

• General Fixes:

  • Resolved issues related to widget responsiveness and state inconsistencies.
  • Improved UI consistency and alignment across all custom widgets.
  • Enhanced performance by optimizing state management and reducing unnecessary rebuilds.

• Specific Issues Addressed:

  • Fixed vertical alignment of icons in ListTileButton and IconListTileButton.
  • Resolved interaction issues where buttons were not fully responsive to taps.
  • Improved customization options for developers using these widgets.

• Issues Closed:

  • Closes Add Optional Subtitle to ExpandableListTile #32: Fixes alignment issues in ListTileButton.
  • Closes Add Elevation Parameter to ListTileButton Constructors #33: Ensures full button area is clickable.
  • Closes Fix Expandable Action in ExpandableListTile #34: Addresses initialization issues in custom_action_button.dart.
  • Closes Refactor IncrementDecrementWidget for Performance #35: Resolves increment/decrement bugs in increment_decrement_widget.dart.

Files Updated:

• increment_decrement_widget.dart
• expandable_list_tile_button.dart
• custom_action_button.dart
• list_tile_button.dart
• list_tile_button_test.dart (Updated tests for ListTileButton and related widgets)