update: function()

in js/projection/column-shifter.js [15:70]

• 45 lines of code
• 5 McCabe index (conditional complexity)

    update: function (options) {
      // todo [akamel] when calling a deep update; suppress onchange event based updates
      if (Model.__super__.update.call(this, options)) {
        var model = this.src.data;
        // todo [akamel] have 'columns' crated at the source so we don't have to put this all over the place
        var columns = model.get('columns');
        var select = model.get('select');
        var colSkipped = model.get('columns.skipped');
        var colRemaining = model.get('columns.remaining');

        var unlockedAt = Math.max(_.findIndex(select, function (col) {
          return columns[col] && !columns[col].$lock;
        }), 0);

        var hasLess = _.size(colSkipped);
        var hasMore = _.size(colRemaining);

        var colLess = {
          property: 'column.skip.less',
          $metadata: {
            'attr.head': { class: ['skip-less'] },
            'enabled': hasLess,
          },
          $html: '<span class="glyphicon glyphicon-triangle-left" />',
        };
        var colMore = {
          property: 'column.skip.more',
          $metadata: {
            'attr.head': { class: ['skip-more'] },
            'enabled': hasMore,
          },
          $html: '<span class="glyphicon glyphicon-triangle-right" />',
        };

        if (!hasLess) {
          colLess.$metadata['attr.head'].class.push('disabled');
        }

        if (!hasMore) {
          colMore.$metadata['attr.head'].class.push('disabled');
        }

        select.splice(unlockedAt, 0, colLess.property);
        columns[colLess.property] = _.defaults(colLess, columns[colLess.property]);
        select.push(colMore.property);
        columns[colMore.property] = _.defaults(colMore, columns[colMore.property]);

        this.patch({
          columns: columns,
          select: select,
        });
      } else {
        // todo [akamel] unset our properties only
        // this.unset();
      }
    },