Add checkboxPartialIcon prop to Tree and TreeTable components #4037

[dimmageiras]

This implements feature request #4037

Description

This PR adds the checkboxPartialIcon prop to both Tree and TreeTable components, allowing developers to customize the icon displayed when nodes are in a partial/indeterminate checkbox state.

Changes Made

Tree Component

• TreeBase.js: Added checkboxPartialIcon to default props
• Tree.js: Passed checkboxPartialIcon prop to UITreeNode
• UITreeNode.js: Implemented logic to use custom partial icon or fallback to MinusIcon
• tree.d.ts: Added TypeScript definition for checkboxPartialIcon prop

TreeTable Component

• TreeTableBase.js: Added checkboxPartialIcon to default props
• TreeTable.js: Passed checkboxPartialIcon prop to TreeTableBody
• TreeTableBody.js: Passed checkboxPartialIcon prop to TreeTableRow
• TreeTableRow.js: Implemented logic to use custom partial icon or fallback to MinusIcon
• treetable.d.ts: Added TypeScript definition for checkboxPartialIcon prop

Technical Details

• The prop follows the same pattern as the existing checkboxIcon prop
• Uses IconType<TreeProps> and IconType<TreeTableProps> respectively for type safety
• Maintains backward compatibility by defaulting to MinusIcon when not provided
• Properly integrated with existing checkbox selection logic

Breaking Changes

None. This is a backward-compatible enhancement.

Documentation

Type definitions have been updated to include the new prop with appropriate JSDoc comments.

Testing

• Tested with custom icons
• Tested fallback to default MinusIcon
• Verified backward compatibility
• Confirmed TypeScript compilation

Related Issue

Resolves #[issue-number]

Type: Enhancement
Component: Tree, TreeTable
Labels: enhancement, tree-component, treetable-component, icons

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[github-actions]

Thanks a lot for your contribution! But, PR does not seem to be linked to any issues. Please manually link to an issue or mention it in the description using #<issue_id>.