Drag Selection Rectangle (Rubber-Band Selection) #334
Description
Is your feature request related to a problem? Please describe.
Currently, multi-selection requires Shift+Click or Ctrl+Click. There’s no support for click-and-drag selection, which is a common interaction in spreadsheet-style controls.
Describe the solution you'd like
Add support for a drag selection rectangle (rubber-band selection):
- Click and drag to draw a semi-transparent selection rectangle
- Select all intersecting cells/rows on mouse release
- Works with both Cell and Row selection modes
- Supports Shift (range extend) and Ctrl (toggle selection) modifiers
- Uses system accent color for visual feedback
Improves usability for bulk operations like copy/paste, delete, and formatting.
Aligns with expected behavior from tools like Excel and modern data grids.
Describe alternatives you've considered
- Shift+Click for range selection, requires more precise mouse movements.
- Other similar UI platform grids already support this.
Additional context
I have POC for this and would like to contribute and open a PR.