Interface AcEdSelectionModifierState

Minimal modifier-key snapshot needed to resolve selection behavior from a mouse or pointer event.

The full DOM MouseEvent object is intentionally not required here so the resolver can stay lightweight, reusable, and easy to test in isolation.

interface AcEdSelectionModifierState {
    ctrlKey: boolean;
    metaKey: boolean;
    shiftKey: boolean;
}

Properties

ctrlKey: boolean

Whether the Control key was pressed when the selection event occurred.

When true and shiftKey is false, the selection resolves to 'add'.

metaKey: boolean

Whether the Meta/Command key was pressed when the selection event occurred.

This provides macOS-friendly additive selection behavior equivalent to ctrlKey.

shiftKey: boolean

Whether the Shift key was pressed when the selection event occurred.

In this viewer, Shift has the highest priority and maps to 'remove'.