<!--
@license
Copyright (C) 2016 The Android Open Source Project

Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at

http://www.apache.org/licenses/LICENSE-2.0

Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
-->
<script>
(function(window) {
  'use strict';

  window.Gerrit = window.Gerrit || {};

  /** @polymerBehavior Gerrit.ChangeTableBehavior */
  Gerrit.ChangeTableBehavior = {
    properties: {
      columnNames: {
        type: Array,
        value: [
          'Subject',
          'Status',
          'Owner',
          'Assignee',
          'Repo',
          'Branch',
          'Updated',
          'Size',
        ],
        readOnly: true,
      },
    },

    /**
     * Returns the complement to the given column array
     *
     * @param {Array} columns
     * @return {!Array}
     */
    getComplementColumns(columns) {
      return this.columnNames.filter(column => !columns.includes(column));
    },

    /**
     * @param {string} columnToCheck
     * @param {!Array} columnsToDisplay
     * @return {boolean}
     */
    isColumnHidden(columnToCheck, columnsToDisplay) {
      if ([columnsToDisplay, columnToCheck].some(arg => arg === undefined)) {
        return false;
      }
      return !columnsToDisplay.includes(columnToCheck);
    },

    /**
     * The Project column was renamed to Repo, but some users may have
     * preferences that use its old name. If that column is found, rename it
     * before use.
     *
     * @param {!Array<string>} columns
     * @return {!Array<string>} If the column was renamed, returns a new array
     *     with the corrected name. Otherwise, it returns the original param.
     */
    getVisibleColumns(columns) {
      const projectIndex = columns.indexOf('Project');
      if (projectIndex === -1) { return columns; }
      const newColumns = columns.slice(0);
      newColumns[projectIndex] = 'Repo';
      return newColumns;
    },
  };

  // eslint-disable-next-line no-unused-vars
  function defineEmptyMixin() {
    // This is a temporary function.
    // Polymer linter doesn't process correctly the following code:
    // class MyElement extends Polymer.mixinBehaviors([legacyBehaviors], ...) {...}
    // To workaround this issue, the mock mixin is declared in this method.
    // In the following changes, legacy behaviors will be converted to mixins.

    /**
     * @polymer
     * @mixinFunction
     */
    Gerrit.ChangeTableMixin = base =>
      class extends base {
        static get properties() {
          return {
            columnNames: {
              type: Array,
            },
          };
        }

        isColumnHidden(columnToCheck, columnsToDisplay) {}
      };
  }
})(window);
</script>