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

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


  function CheckboxSelectColumn(options) {
    var _grid;
    var _self = this;
    var _handler = new Slick.EventHandler();
    var _selectedRowsLookup = {};
    var _defaults = {
      columnId: "_checkbox_selector",
      cssClass: null,
      toolTip: "Select/Deselect All",
      width: 30
    };

    var _options = $.extend(true, {}, _defaults, options);

    function init(grid) {
      _grid = grid;
      _handler
        .subscribe(_grid.onSelectedRowsChanged, handleSelectedRowsChanged)
        .subscribe(_grid.onClick, handleClick)
        .subscribe(_grid.onHeaderClick, handleHeaderClick)
        .subscribe(_grid.onKeyDown, handleKeyDown);
    }

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

    function handleSelectedRowsChanged(e, args) {
      var selectedRows = _grid.getSelectedRows();
      var lookup = {}, row, i;
      for (i = 0; i < selectedRows.length; i++) {
        row = selectedRows[i];
        lookup[row] = true;
        if (lookup[row] !== _selectedRowsLookup[row]) {
          _grid.invalidateRow(row);
          delete _selectedRowsLookup[row];
        }
      }
      for (i in _selectedRowsLookup) {
        _grid.invalidateRow(i);
      }
      _selectedRowsLookup = lookup;
      _grid.render();

      if (selectedRows.length && selectedRows.length == _grid.getDataLength()) {
        _grid.updateColumnHeader(_options.columnId, "<input type='checkbox' checked='checked'>", _options.toolTip);
      } else {
        _grid.updateColumnHeader(_options.columnId, "<input type='checkbox'>", _options.toolTip);
      }
    }