public/static/common/js/plugin/slickgrid/plugins/slick.rowmovemanager.js

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(function ($) {
  // register namespace
  $.extend(true, window, {
    "Slick": {
      "RowMoveManager": RowMoveManager
    }
  });

  function RowMoveManager(options) {
    var _grid;
    var _canvas;
    var _dragging;
    var _self = this;
    var _handler = new Slick.EventHandler();
    var _defaults = {
      cancelEditOnDrag: false
    };

    function init(grid) {
      options = $.extend(true, {}, _defaults, options);
      _grid = grid;
      _canvas = _grid.getCanvasNode();
      _handler
        .subscribe(_grid.onDragInit, handleDragInit)
        .subscribe(_grid.onDragStart, handleDragStart)
        .subscribe(_grid.onDrag, handleDrag)
        .subscribe(_grid.onDragEnd, handleDragEnd);
    }

    function destroy() {
      _handler.unsubscribeAll();
    }

    function handleDragInit(e, dd) {
      // prevent the grid from cancelling drag'n'drop by default
      e.stopImmediatePropagation();
    }

    function handleDragStart(e, dd) {
      var cell = _grid.getCellFromEvent(e);

      if (options.cancelEditOnDrag && _grid.getEditorLock().isActive()) {
        _grid.getEditorLock().cancelCurrentEdit();
      }

      if (_grid.getEditorLock().isActive() || !/move|selectAndMove/.test(_grid.getColumns()[cell.cell].behavior)) {
        return false;
      }

      _dragging = true;
      e.stopImmediatePropagation();

      var selectedRows = _grid.getSelectedRows();

      if (selectedRows.length == 0 || $.inArray(cell.row, selectedRows) == -1) {
        selectedRows = [cell.row];
        _grid.setSelectedRows(selectedRows);
      }

      var rowHeight = _grid.getOptions().rowHeight;