/*! DataTables Bootstrap 3 integration
 * ©2011-2015 SpryMedia Ltd - datatables.net/license
 */

/**
 * DataTables integration for Bootstrap 3. This requires Bootstrap 3 and
 * DataTables 1.10 or newer.
 *
 * This file sets the defaults and adds options to DataTables to style its
 * controls using Bootstrap. See http://datatables.net/manual/styling/bootstrap
 * for further information.
 */
(function (factory) {
  if (typeof define === "function" && define.amd) {
    // AMD
    define(["jquery", "datatables.net"], function ($) {
      return factory($, window, document);
    });
  } else if (typeof exports === "object") {
    // CommonJS
    module.exports = function (root, $) {
      if (!root) {
        root = window;
      }

      if (!$ || !$.fn.dataTable) {
        // Require DataTables, which attaches to jQuery, including
        // jQuery if needed and have a $ property so we can access the
        // jQuery object that is used
        $ = require("datatables.net")(root, $).$;
      }

      return factory($, root, root.document);
    };
  } else {
    // Browser
    factory(jQuery, window, document);
  }
})(function ($, window, document, undefined) {
  "use strict";
  var DataTable = $.fn.dataTable;

  /* Set the defaults for DataTables initialisation */
  $.extend(true, DataTable.defaults, {
    dom:
      "<'ui stackable grid'" +
      "<'row'" +
      "<'eight wide column'l>" +
      "<'right aligned eight wide column'f>" +
      ">" +
      "<'row dt-table'" +
      "<'sixteen wide column'tr>" +
      ">" +
      "<'row'" +
      "<'seven wide column'i>" +
      "<'right aligned nine wide column'p>" +
      ">" +
      ">",
    renderer: "semanticUI",
  });

  /* Default class modification */
  $.extend(DataTable.ext.classes, {
    sWrapper: "dataTables_wrapper dt-semanticUI",
    sFilter: "dataTables_filter ui input",
    sProcessing: "dataTables_processing ui segment",
    sPageButton: "paginate_button item",
  });

  /* Bootstrap paging button renderer */
  DataTable.ext.renderer.pageButton.semanticUI = function (
    settings,
    host,
    idx,
    buttons,
    page,
    pages
  ) {
    var api = new DataTable.Api(settings);
    var classes = settings.oClasses;
    var lang = settings.oLanguage.oPaginate;
    var aria = settings.oLanguage.oAria.paginate || {};
    var btnDisplay,
      btnClass,
      counter = 0;

    var attach = function (container, buttons) {
      var i, ien, node, button;
      var clickHandler = function (e) {
        e.preventDefault();
        if (
          !$(e.currentTarget).hasClass("disabled") &&
          api.page() != e.data.action
        ) {
          api.page(e.data.action).draw("page");
        }
      };

      for (i = 0, ien = buttons.length; i < ien; i++) {
        button = buttons[i];

        if ($.isArray(button)) {
          attach(container, button);
        } else {
          btnDisplay = "";
          btnClass = "";

          switch (button) {
            case "ellipsis":
              btnDisplay = "&#x2026;";
              btnClass = "disabled";
              break;

            case "first":
              btnDisplay = lang.sFirst;
              btnClass = button + (page > 0 ? "" : " disabled");
              break;

            case "previous":
              btnDisplay = lang.sPrevious;
              btnClass = button + (page > 0 ? "" : " disabled");
              break;

            case "next":
              btnDisplay = lang.sNext;
              btnClass = button + (page < pages - 1 ? "" : " disabled");
              break;

            case "last":
              btnDisplay = lang.sLast;
              btnClass = button + (page < pages - 1 ? "" : " disabled");
              break;

            default:
              btnDisplay = button + 1;
              btnClass = page === button ? "active" : "";
              break;
          }

          var tag = btnClass.indexOf("disabled") === -1 ? "a" : "div";

          if (btnDisplay) {
            node = $("<" + tag + ">", {
              class: classes.sPageButton + " " + btnClass,
              id:
                idx === 0 && typeof button === "string"
                  ? settings.sTableId + "_" + button
                  : null,
              href: "#",
              "aria-controls": settings.sTableId,
              "aria-label": aria[button],
              "data-dt-idx": counter,
              tabindex: settings.iTabIndex,
            })
              .html(btnDisplay)
              .appendTo(container);

            settings.oApi._fnBindAction(node, { action: button }, clickHandler);

            counter++;
          }
        }
      }
    };

    // IE9 throws an 'unknown error' if document.activeElement is used
    // inside an iframe or frame.
    var activeEl;

    try {
      // Because this approach is destroying and recreating the paging
      // elements, focus is lost on the select button which is bad for
      // accessibility. So we want to restore focus once the draw has
      // completed
      activeEl = $(host).find(document.activeElement).data("dt-idx");
    } catch (e) {}

    attach(
      $(host)
        .empty()
        .html('<div class="ui stackable pagination menu"/>')
        .children(),
      buttons
    );

    if (activeEl !== undefined) {
      $(host)
        .find("[data-dt-idx=" + activeEl + "]")
        .focus();
    }
  };

  // Javascript enhancements on table initialisation
  $(document).on("init.dt", function (e, ctx) {
    if (e.namespace !== "dt") {
      return;
    }

    // Length menu drop down
    if ($.fn.dropdown) {
      var api = new $.fn.dataTable.Api(ctx);

      $("div.dataTables_length select", api.table().container()).dropdown();
    }
  });

  return DataTable;
});