DnDSupport.java 文件源码

public void dragEnter(DropTargetDragEvent e) {
    if( e.isDataFlavorSupported( buttonDataFlavor ) || e.isDataFlavorSupported( actionDataFlavor ) ) {
        e.acceptDrag(DnDConstants.ACTION_COPY_OR_MOVE);
        isButtonDrag = true; //in case use is dragging something from the customizer window
    } else if( e.isDataFlavorSupported( toolbarDataFlavor ) ) {
        e.acceptDrag(DnDConstants.ACTION_COPY_OR_MOVE);
    } else {
        e.rejectDrag();
    }
}