Undo & Redo#

#Overview

rs-grid maintains an undo/redo history for reversible actions. Press Ctrl+Z to undo and Ctrl+Y to redo.

#Commands

state.apply(GridCommand::Undo);
state.apply(GridCommand::Redo);

#What is tracked

#History capacity

The undo stack holds a maximum of 100 entries. When the limit is reached, the oldest entry is removed (FIFO). Performing a new undoable action clears the entire redo stack.

#How it works

1. When an undoable command is applied, GridState pushes an UndoEntry with the inverse operation
2. Undo pops from the undo stack, applies the inverse, and pushes the re-inverse onto the redo stack
3. Redo pops from the redo stack, applies the entry, and pushes back onto the undo stack

[Undo stack]  ←→  [Redo stack]
   push ←── new action (clears redo)
   pop  ──→ apply inverse ──→ push to redo
             redo pop ──→ apply ──→ push to undo

#Actions NOT tracked

These actions are not undoable:

• Selection changes
• Scrolling
• Sorting / filtering
• Search
• Hover state