forked from 1b-agent/opencadstudio-upstream
Hakan SevenandClaude Opus 4.8
cd766bc1f5
The scale manager now runs as a transaction, matching the style managers' staging: New starts a blank editor draft (nothing is added to the drawing until Apply), Delete removes immediately but staged, and closing the window without Apply restores the snapshot taken on open — so a scale created or deleted mid-session is discarded on cancel. Apply commits the staged list changes as a single undo entry. This replaces the earlier behaviour where New copied the selected scale and edits landed immediately. A `changed` flag guards the commit so a no-op / failed Apply (blank or invalid fields, or an edit that didn't apply) no longer dirties the drawing or pushes a phantom undo entry. Set Current is deliberately outside the transaction — it takes effect immediately like the scale pill (and syncs CANNOSCALEVALUE), so it is never rolled back on close. Renaming the current scale follows the pointer; editing one of the built-in fallback scales (shown when the drawing has no scale list) materialises it as a real scale; the snapshot restore touches only the ACAD_SCALELIST root entry. Co-Authored-By: Claude Opus 4.8 <[email protected]>