touchEventHandlers touchDrag.ts

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  import getActiveToolForTouchEvent from '../shared/getActiveToolForTouchEvent';
import { state } from '../../store';
import { TouchDragEventType } from '../../types/EventTypes';
 
/**
 * touchDrag - Event handler for touchDrag events. Uses `customCallbackHandler` to fire
 * the `touchDragCallback` function on active tools.
 */
export default function touchDrag(evt: TouchDragEventType) {
  if (state.isInteractingWithTool) {
    return;
  }
 
  const activeTool = getActiveToolForTouchEvent(evt);
 
  const noFoundToolOrDoesNotHaveTouchDragCallback =
    !activeTool || typeof activeTool.touchDragCallback !== 'function';
  if (noFoundToolOrDoesNotHaveTouchDragCallback) {
    return;
  }
 
  activeTool.touchDragCallback(evt);
}