Method isDragging

packages/react-dnd/src/createSourceFactory.js:63–69

(globalMonitor, sourceId)

    }

    isDragging(globalMonitor, sourceId) {
      if (!spec.isDragging) {
        return sourceId === globalMonitor.getSourceId();
      }

      return spec.isDragging(this.props, this.monitor);
    }

    beginDrag() {
      const item = spec.beginDrag(this.props, this.monitor, this.component);