LeeChSien/angular-option-tree

/*!
 * angular-option-tree v0.8.0
 * Author: Jason Lee
 * License: MIT
 */
(function () {
  'use strict';
  function get_hash_string() {
    var text = '';
    var possible = 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz';
    for (var i = 0; i < 10; i++) {
      text += possible.charAt(Math.floor(Math.random() * possible.length));
    }
    return text;
  }
  function get_preselect_path(json, value) {
    var sub_path = [];
    for (var key in json) {
      if (json[key] === parseInt(json[key], 10)) {
        if (json[key] == value) {
          sub_path.push(key);
          return sub_path;
        }
      } else {
        sub_path = get_preselect_path(json[key], value);
        if (sub_path.length > 0) {
          sub_path.unshift(key);
          return sub_path;
        }
      }
    }
    return [];
  }
  angular.module('option-tree', []).directive('optionTree', [
    '$http',
    function ($http) {
      return {
        restrict: 'AC',
        link: function (scope, element, attrs) {
          var element_query_pattern = '', isInit = false, settings = {
              select_class: $(element).attr('option-tree-class'),
              choose: $(element).attr('option-tree-prompt')
            };
          // Avoid input name is empty
          if (!$(element).attr('name')) {
            $(element).attr('name', get_hash_string());
          }
          element_query_pattern = 'input[name=\'' + element.attr('name') + '\']';
          function refresh_preselect(option_tree) {
            if (settings.hasOwnProperty('preselect')) {
              delete settings.preselect;
            }
            if ($(element).val()) {
              var path = get_preselect_path(option_tree, $(element).val());
              if (path.length > 0) {
                settings.preselect = {};
                settings.preselect[$(element).attr('name')] = path;
              }
            }
          }
          function bind_option_tree(option_tree) {
            if (isInit) {
              var tempVar = $(element).val();
              $(element_query_pattern).optionTree('destroy');
              $(element).val(tempVar);
            } else {
              isInit = true;
            }
            refresh_preselect(option_tree);
            $(element_query_pattern).optionTree(option_tree, settings);
          }
          scope.$watch(attrs.optionTree, function (option_tree) {
            bind_option_tree(option_tree);
          });
          // Loading Remote Data
          if ($(element).attr('option-tree-src')) {
            $http.get($(element).attr('option-tree-src')).success(function (data) {
              bind_option_tree(data);
            });
          }
        }
      };
    }
  ]);
}());