search.js

module.exports = function(list) {
  var item,
    text,
    columns,
    searchString,
    customSearch;

  var prepare = {
    resetList: function() {
      list.i = 1;
      list.templater.clear();
      customSearch = undefined;
    },
    setOptions: function(args) {
      if (args.length == 2 && args[1] instanceof Array) {
        columns = args[1];
      } else if (args.length == 2 && typeof(args[1]) == "function") {
        columns = undefined;
        customSearch = args[1];
      } else if (args.length == 3) {
        columns = args[1];
        customSearch = args[2];
      } else {
        columns = undefined;
      }
    },
    setColumns: function() {
      if (list.items.length === 0) return;
      if (columns === undefined) {
        columns = (list.searchColumns === undefined) ? prepare.toArray(list.items[0].values()) : list.searchColumns;
      }
    },
    setSearchString: function(s) {
      s = list.utils.toString(s).toLowerCase();
      s = s.replace(/[-[\]{}()*+?.,\\^$|#]/g, "\\$&"); // Escape regular expression characters
      searchString = s;
    },
    toArray: function(values) {
      var tmpColumn = [];
      for (var name in values) {
        tmpColumn.push(name);
      }
      return tmpColumn;
    }
  };
  var search = {
    list: function() {
      for (var k = 0, kl = list.items.length; k < kl; k++) {
        search.item(list.items[k]);
      }
    },
    item: function(item) {
      item.found = false;
      for (var j = 0, jl = columns.length; j < jl; j++) {
        if (search.values(item.values(), columns[j])) {
          item.found = true;
          return;
        }
      }
    },
    values: function(values, column) {
      if (values.hasOwnProperty(column)) {
        text = list.utils.toString(values[column]).toLowerCase();
        if ((searchString !== "") && (text.search(searchString) > -1)) {
          return true;
        }
      }
      return false;
    },
    reset: function() {
      list.reset.search();
      list.searched = false;
    }
  };

  var searchMethod = function(str) {
    list.trigger('searchStart');

    prepare.resetList();
    prepare.setSearchString(str);
    prepare.setOptions(arguments); // str, cols|searchFunction, searchFunction
    prepare.setColumns();

    if (searchString === "" ) {
      search.reset();
    } else {
      list.searched = true;
      if (customSearch) {
        customSearch(searchString, columns);
      } else {
        search.list();
      }
    }

    list.update();
    list.trigger('searchComplete');
    return list.visibleItems;
  };

  list.handlers.searchStart = list.handlers.searchStart || [];
  list.handlers.searchComplete = list.handlers.searchComplete || [];

  list.utils.events.bind(list.utils.getByClass(list.listContainer, list.searchClass), 'keyup', function(e) {
    var target = e.target || e.srcElement, // IE have srcElement
      alreadyCleared = (target.value === "" && !list.searched);
    if (!alreadyCleared) { // If oninput already have resetted the list, do nothing
      searchMethod(target.value);
    }
  });

  // Used to detect click on HTML5 clear button
  list.utils.events.bind(list.utils.getByClass(list.listContainer, list.searchClass), 'input', function(e) {
    var target = e.target || e.srcElement;
    if (target.value === "") {
      searchMethod('');
    }
  });

  return searchMethod;
};