initial public release.

src/components/interfaces.ts

@@ -0,0 +1,42 @@
+// selectable interface
+export interface Selectable {
+  getId(): string;
+  select(): void;
+  deselect(): void;
+  isSelected(): boolean;
+  getRootType(): string;
+  getCurrentType(): string;
+}
+
+// Define a Region interface for UI representation
+export interface RegionUI {
+  id: string;
+  trackId: string;
+  trackIndex: number;
+  barNumber: number;
+  length: number;
+  name: string;
+}
+
+// Define resize action types
+export type ResizeAction = 'none' | 'start' | 'end';
+
+// Define region resize state
+export interface RegionResizeState {
+  regionId: string;
+  isResizing: boolean;
+  resizeAction: ResizeAction;
+  initialX: number;
+  initialBarNumber: number;
+  initialLength: number;
+}
+
+// Define region drag state
+export interface RegionDragState {
+  regionId: string;
+  isDragging: boolean;
+  initialX: number;
+  initialY: number;
+  initialBarNumber: number;
+  initialTrackIndex: number;
+}