text: /*
   *  Angular RangeSlider Directive
   * 
   *  Version: 0.0.13
   *
   *  Author: Daniel Crisp, danielcrisp.com
   *
   *  The rangeSlider has been styled to match the default styling
   *  of form elements styled using Twitter's Bootstrap
   *
   *  Originally forked from https://github.com/leongersen/noUiSlider
   *
  
      This code is released under the MIT Licence - http://opensource.org/licenses/MIT
  
      Copyright (c) 2013 Daniel Crisp
  
      Permission is hereby granted, free of charge, to any person obtaining a copy
      of this software and associated documentation files (the "Software"), to deal
      in the Software without restriction, including without limitation the rights
      to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
      copies of the Software, and to permit persons to whom the Software is
      furnished to do so, subject to the following conditions:
  
      The above copyright notice and this permission notice shall be included in
      all copies or substantial portions of the Software.
  
      THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
      IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
      FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
      AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
      LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
      OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
      THE SOFTWARE.
  
  */
  
  (function () {
      'use strict';
  
      // check if we need to support legacy angular
      var legacySupport = (angular.version.major === 1 && angular.version.minor === 0);
  
      /**
       * RangeSlider, allows user to define a range of values using a slider
       * Touch friendly.
       * @directive
       */
      angular.module('ui-rangeSlider', [])
          .directive('rangeSlider', ['$document', '$filter', '$log', function ($document, $filter, $log) {
  
              // test for mouse, pointer or touch
              var eventNamespace = '.rangeSlider',
  
                  defaults = {
                      disabled: false,
                      orientation: 'horizontal',
                      step: 0,
                      decimalPlaces: 0,
                      showValues: true,
                      preventEqualMinMax: false,
                      attachHandleValues: false
                  },
  
                  // Determine the events to bind. IE11 implements pointerEvents without
                  // a prefix, which breaks compatibility with the IE10 implementation.
                  /** @const */
                  actions = window.navigator.pointerEnabled ? {
                      start: 'pointerdown',
                      move: 'pointermove',
                      end: 'pointerup',
                      over: 'pointerdown',
                      out: 'mouseout'
                  } : window.navigator.msPointerEnabled ? {
                      start: 'MSPointerDown',
                      move: 'MSPointerMove',
                      end: 'MSPointerUp',
                      over: 'MSPointerDown',
                      out: 'mouseout'
                  } : {
                      start: 'mousedown touchstart',
                      move: 'mousemove touchmove',
                      end: 'mouseup touchend',
                      over: 'mouseover touchstart',
                      out: 'mouseout'
                  },
  
                  onEvent = actions.start + eventNamespace,
                  moveEvent = actions.move + eventNamespace,
                  offEvent = actions.end + eventNamespace,
                  overEvent = actions.over + eventNamespace,
                  outEvent = actions.out + eventNamespace,
  
                  // get standarised clientX and clientY
                  client = function (f) {
                      try {
                          return [(f.clientX || f.originalEvent.clientX || f.originalEvent.touches[0].clientX), (f.clientY || f.originalEvent.clientY || f.originalEvent.touches[0].clientY)];
                      } catch (e) {
                          return ['x', 'y'];
                      }
                  },
  
                  restrict = function (value) {
  
                      // normalize so it can't move out of bounds
                      return (value < 0 ? 0 : (value > 100 ? 100 : value));
  
                  },
  
                  isNumber = function (n) {
                      // console.log(n);
                      return !isNaN(parseFloat(n)) && isFinite(n);
                  },
  
                  scopeOptions = {
                      disableMessage: '@',
                      disabled: '=?',
                      min: '=',
                      max: '=',
                      modelMin: '=?',
                      modelMax: '=?',
                      onErrorMessage:'&',
                      onHandleDown: '&', // calls optional function when handle is grabbed
                      onHandleUp: '&', // calls optional function when handle is released
                      orientation: '@', // options: horizontal | vertical | vertical left | vertical right
                      step: '@',
                      decimalPlaces: '@',
                      filter: '@',
                      filterOptions: '@',
                      showValues: '@',
                      pinHandle: '@',
                      preventEqualMinMax: '@',
                      attachHandleValues: '@',
                      getterSetter: '@' // Allow the use of getterSetters for model values
                  };
  
              if (legacySupport) {
                  // make optional properties required
                  scopeOptions.disabled = '=';
                  scopeOptions.modelMin = '=';
                  scopeOptions.modelMax = '=';
              }
  
              // if (EVENT < 4) {
              //     // some sort of touch has been detected
              //     angular.element('html').addClass('ngrs-touch');
              // } else {
              //     angular.element('html').addClass('ngrs-no-touch');
              // }
  
  
              return {
                  restrict: 'A',
                  replace: true,
                  template: ['<div class="ngrs-range-slider">',
                      '<div class="ngrs-runner">',
                      '<div class="ngrs-handle ngrs-handle-max"><i></i></div>',
                      '<div class="ngrs-join2"></div>',
                      '<div class="ngrs-join"></div>',
                      '</div>',
                      '<div class="ngrs-value-runner">',
                      '<div class="ngrs-value ngrs-value-min" ng-show="showValues"><div>{{filteredModelMin}}</div></div>',
                      '<div class="ngrs-value ngrs-value-max" ng-show="showValues"><div>{{filteredModelMax}}</div></div>',
                      '</div>',
                      '</div>'
                  ].join(''),
                  scope: scopeOptions,
                  link: function (scope, element, attrs, controller) {
  
                      /**
                       *  FIND ELEMENTS
                       */
  
                      var $slider = angular.element(element),
                          handles = [element.find('.ngrs-handle-min'), element.find('.ngrs-handle-max')],
                          values = [element.find('.ngrs-value-min'), element.find('.ngrs-value-max')],
                          join = element.find('.ngrs-join'),
                          join2 = element.find('.ngrs-join2'),
                          pos = 'left',
                          posOpp = 'right',
                          orientation = 0,
                          allowedRange = [0, 0],
                          range = 0,
                          down = false;
  
                      // filtered
                      scope.filteredModelMin = modelMin();
                      scope.filteredModelMax = modelMax();
  
                      /**
                       *  FALL BACK TO DEFAULTS FOR SOME ATTRIBUTES
                       */
  
                      attrs.$observe('disabled', function (val) {
                          if (!angular.isDefined(val)) {
                              scope.disabled = defaults.disabled;
                          }
  
                          scope.$watch('disabled', setDisabledStatus);
                      });
  
                      attrs.$observe('orientation', function (val) {
                          if (!angular.isDefined(val)) {
                              scope.orientation = defaults.orientation;
                          }
  
                          var classNames = scope.orientation.split(' '),
                              useClass;
  
                          for (var i = 0, l = classNames.length; i < l; i++) {
                              classNames[i] = 'ngrs-' + classNames[i];
                          }
  
                          useClass = classNames.join(' ');
  
                          // add class to element
                          $slider.addClass(useClass);
  
                          // update pos
                          if (scope.orientation === 'vertical' || scope.orientation === 'vertical left' || scope.orientation === 'vertical right') {
                              pos = 'top';
                              posOpp = 'bottom';
                              orientation = 1;
                          }
                      });
  
                      attrs.$observe('step', function (val) {
                          if (!angular.isDefined(val)) {
                              scope.step = defaults.step;
                          }
                      });
  
                      attrs.$observe('decimalPlaces', function (val) {
                          if (!angular.isDefined(val)) {
                              scope.decimalPlaces = defaults.decimalPlaces;
                          }
                      });
  
                      attrs.$observe('showValues', function (val) {
                          if (!angular.isDefined(val)) {
                              scope.showValues = defaults.showValues;
                          } else {
                              if (val === 'false') {
                                  scope.showValues = false;
                              } else {
                                  scope.showValues = true;
                              }
                          }
                      });
  
                      attrs.$observe('pinHandle', function (val) {
                          if (!angular.isDefined(val)) {
                              scope.pinHandle = null;
                          } else {
                              if (val === 'min' || val === 'max') {
                                  scope.pinHandle = val;
                              } else {
                                  scope.pinHandle = null;
                              }
                          }
  
                          scope.$watch('pinHandle', setPinHandle);
                      });
  
                      attrs.$observe('preventEqualMinMax', function (val) {
                          if (!angular.isDefined(val)) {
                              scope.preventEqualMinMax = defaults.preventEqualMinMax;
                          } else {
                              if (val === 'false') {
                                  scope.preventEqualMinMax = false;
                              } else {
                                  scope.preventEqualMinMax = true;
                              }
                          }
                      });
  
                      attrs.$observe('attachHandleValues', function (val) {
                          if (!angular.isDefined(val)) {
                              scope.attachHandleValues = defaults.attachHandleValues;
                          } else {
                              if (val === 'true' || val === '') {
                                  // flag as true
                                  scope.attachHandleValues = true;
                                  // add class to runner
                                  element.find('.ngrs-value-runner').addClass('ngrs-attached-handles');
                              } else {
                                  scope.attachHandleValues = false;
                              }
                          }
                      });
  
                      // GetterSetters for model values
  
                      function modelMin(newValue) {
                          if (scope.getterSetter) {
                              return arguments.length ? scope.modelMin(newValue) : scope.modelMin();
                          } else {
                              return arguments.length ? (scope.modelMin = newValue) : scope.modelMin;
                          }
                      }
  
                      function modelMax(newValue) {
                          if (scope.getterSetter) {
                              return arguments.length ? scope.modelMax(newValue) : scope.modelMax();
                          } else {
                              return arguments.length ? (scope.modelMax = newValue) : scope.modelMax;
                          }
                      }
  
                      // listen for changes to values
                      scope.$watch('min', setMinMax);
                      scope.$watch('max', setMinMax);
  
                      scope.$watch(function () {
                          return modelMin();
                      }, setModelMinMax);
                      scope.$watch(function () {
                          return modelMax();
                      }, setModelMinMax);
  
                      /**
                       * HANDLE CHANGES
                       */
  
                      function setPinHandle(status) {
                          if (status === "min") {
                              angular.element(handles[0]).css('display', 'none');
                              angular.element(handles[1]).css('display', 'block');
                          } else if (status === "max") {
                              angular.element(handles[0]).css('display', 'block');
                              angular.element(handles[1]).css('display', 'none');
                          } else {
                              angular.element(handles[0]).css('display', 'block');
                              angular.element(handles[1]).css('display', 'block');
                          }
                      }
  
                      function setDisabledStatus(status) {
                          if (status) {
                              $slider.addClass('ngrs-disabled');
                          } else {
                              $slider.removeClass('ngrs-disabled');
                          }
                      }
  
                      function setMinMax() {
  
                          if (scope.min > scope.max) {
                              throwError('min must be less than or equal to max');
                          }
  
                          // only do stuff when both values are ready
                          if (angular.isDefined(scope.min) && angular.isDefined(scope.max)) {
  
                              // make sure they are numbers
                              if (!isNumber(scope.min)) {
                                  throwError('min must be a number');
                              }
  
                              if (!isNumber(scope.max)) {
                                  throwError('max must be a number');
                              }
  
                              range = scope.max - scope.min;
                              allowedRange = [scope.min, scope.max];
  
                              // update models too
                              setModelMinMax();
  
                          }
                      }
  
                      function setModelMinMax() {
  
                          if (modelMin() > modelMax()) {
                              throwWarning('modelMin must be less than or equal to modelMax');
                              // reset values to correct
                              modelMin(modelMax());
                          }
  
                          // only do stuff when both values are ready
                          if (
                              (angular.isDefined(modelMin()) || scope.pinHandle === 'min') &&
                              (angular.isDefined(modelMax()) || scope.pinHandle === 'max')
                          ) {
  
                              // make sure they are numbers
                              if (!isNumber(modelMin())) {
                                  if (scope.pinHandle !== 'min') {
                                      throwWarning('modelMin must be a number');
                                  }
                                  modelMin(scope.min);
                              }
  
                              if (!isNumber(modelMax())) {
                                  if (scope.pinHandle !== 'max') {
                                      throwWarning('modelMax must be a number');
                                  }
                                  modelMax(scope.max);
                              }
  
                              var handle1pos = restrict(((modelMin() - scope.min) / range) * 100),
                                  handle2pos = restrict(((modelMax() - scope.min) / range) * 100),
                                  value1pos,
                                  value2pos;
  
                              if (scope.attachHandleValues) {
                                  value1pos = handle1pos;
                                  value2pos = handle2pos;
                              }
  
                              // make sure the model values are within the allowed range
                              modelMin(Math.max(scope.min, modelMin()));
                              modelMax(Math.min(scope.max, modelMax()));
  
                              if (scope.filter && scope.filterOptions) {
                                  scope.filteredModelMin = $filter(scope.filter)(modelMin(), scope.filterOptions);
                                  scope.filteredModelMax = $filter(scope.filter)(modelMax(), scope.filterOptions);
                              } else if (scope.filter) {
  
                                  var filterTokens = scope.filter.split(':'),
                                      filterName = scope.filter.split(':')[0],
                                      filterOptions = filterTokens.slice().slice(1),
                                      modelMinOptions,
                                      modelMaxOptions;
  
                                  // properly parse string and number args
                                  filterOptions = filterOptions.map(function (arg) {
                                      if (isNumber(arg)) {
                                          return +arg;
                                      } else if ((arg[0] == "\"" && arg[arg.length - 1] == "\"") || (arg[0] == "\'" && arg[arg.length - 1] == "\'")) {
                                          return arg.slice(1, -1);
                                      }
                                  });
  
                                  modelMinOptions = filterOptions.slice();
                                  modelMaxOptions = filterOptions.slice();
                                  modelMinOptions.unshift(modelMin());
                                  modelMaxOptions.unshift(modelMax());
  
                                  scope.filteredModelMin = $filter(filterName).apply(null, modelMinOptions);
                                  scope.filteredModelMax = $filter(filterName).apply(null, modelMaxOptions);
                              } else {
                                  scope.filteredModelMin = modelMin();
                                  scope.filteredModelMax = modelMax();
                              }
  
                              // check for no range
                              if (scope.min === scope.max && modelMin() == modelMax()) {
  
                                  // reposition handles
                                  angular.element(handles[0]).css(pos, '0%');
                                  angular.element(handles[1]).css(pos, '100%');
  
                                  if (scope.attachHandleValues) {
                                      // reposition values
                                      angular.element(values[0]).css(pos, '0%');
                                      angular.element(values[1]).css(pos, '100%');
                                  }
  
                                  // reposition join
                                  angular.element(join).css(pos, '0%').css(posOpp, '0%');
                                  angular.element(join2).css(pos, '100%').css(posOpp, '100%');
  
                              } else {
  
                                  // reposition handles
                                  angular.element(handles[0]).css(pos, handle1pos + '%');
                                  angular.element(handles[1]).css(pos, handle2pos + '%');
  
                                  if (scope.attachHandleValues) {
                                      // reposition values
                                      angular.element(values[0]).css(pos, value1pos + '%');
                                      angular.element(values[1]).css(pos, value2pos + '%');
                                      angular.element(values[1]).css(posOpp, 'auto');
                                  }
  
                                  // reposition join
                                  angular.element(join).css(pos, handle1pos + '%').css(posOpp, (100 - handle2pos) + '%');
                                  if (handle1pos == 0) {
                                      angular.element(join2).css(pos, '0%').css(posOpp, '0%');
                                  } else {
                                      angular.element(join2).css(pos, handle2pos + '%').css(posOpp, (100 - handle2pos) + '%');
                                  }
  
                                  // ensure min handle can't be hidden behind max handle
                                  if (handle1pos > 95) {
                                      angular.element(handles[0]).css('z-index', 3);
                                  }
                              }
  
                          }
  
                      }
  
                      function handleMove(index) {
                          var errorMsg = scope.disableMessage || '应用DR不能在Group间形成闭环!';
  
                          var $handle = handles[index];
  
                          // on mousedown / touchstart
                          $handle.bind(onEvent + 'X', function (event) {
  
                              var handleDownClass = (index === 0 ? 'ngrs-handle-min' : 'ngrs-handle-max') + '-down',
                                  //unbind = $handle.add($document).add('body'),
                                  modelValue = (index === 0 ? modelMin() : modelMax()) - scope.min,
                                  originalPosition = (modelValue / range) * 100,
                                  originalClick = client(event),
                                  previousClick = originalClick,
                                  previousProposal = false;
  
                              if (angular.isFunction(scope.onHandleDown)) {
                                  scope.onHandleDown();
                              }
  
                              // stop user accidentally selecting stuff
                              angular.element('body').bind('selectstart' + eventNamespace, function () {
                                  return false;
                              });
  
                              // only do stuff if we are disabled
                              if (!scope.disabled) {
  
                                  // flag as down
                                  down = true;
  
                                  // add down class
                                  $handle.addClass('ngrs-down');
  
                                  $slider.addClass('ngrs-focus ' + handleDownClass);
  
                                  // add touch class for MS styling
                                  angular.element('body').addClass('ngrs-touching');
  
                                  // listen for mousemove / touchmove document events
                                  $document.bind(moveEvent, function (e) {
                                      // prevent default
                                      e.preventDefault();
  
                                      var currentClick = client(e),
                                          movement,
                                          proposal,
                                          other,
                                          per = (scope.step / range) * 100,
                                          otherModelPosition = (((index === 0 ? modelMax() : modelMin()) - scope.min) / range) * 100;
  
                                      if (currentClick[0] === "x") {
                                          return;
                                      }
  
                                      // calculate deltas
                                      currentClick[0] -= originalClick[0];
                                      currentClick[1] -= originalClick[1];
  
                                      // has movement occurred on either axis?
                                      movement = [
                                          (previousClick[0] !== currentClick[0]), (previousClick[1] !== currentClick[1])
                                      ];
  
                                      // propose a movement
                                      proposal = originalPosition + ((currentClick[orientation] * 100) / (orientation ? $slider.height() : $slider.width()));
  
                                      // normalize so it can't move out of bounds
                                      proposal = restrict(proposal);
  
                                      if (scope.preventEqualMinMax) {
  
                                          if (per === 0) {
                                              per = (1 / range) * 100; // restrict to 1
                                          }
  
                                          if (index === 0) {
                                              otherModelPosition = otherModelPosition - per;
                                          } else if (index === 1) {
                                              otherModelPosition = otherModelPosition + per;
                                          }
                                      }
  
                                      // check which handle is being moved and add / remove margin
                                      if (index === 0) {
                                          proposal = proposal > otherModelPosition ? otherModelPosition : proposal;
                                      } else if (index === 1) {
                                          proposal = proposal < otherModelPosition ? otherModelPosition : proposal;
                                      }
  
                                      if (scope.step > 0) {
                                          // only change if we are within the extremes, otherwise we get strange rounding
                                          if (proposal < 100 && proposal > 0) {
                                              proposal = Math.round(proposal / per) * per;
                                          }
                                      }
  
                                      if (proposal > 95 && index === 0) {
                                          $handle.css('z-index', 3);
                                      } else {
                                          $handle.css('z-index', '');
                                      }
  
                                      if (movement[orientation] && proposal != previousProposal) {
  
                                          if (index === 0) {
  
                                              // update model as we slide
                                              modelMin(parseFloat(parseFloat((((proposal * range) / 100) + scope.min)).toFixed(scope.decimalPlaces)));
  
                                          } else if (index === 1) {
  
                                              modelMax(parseFloat(parseFloat((((proposal * range) / 100) + scope.min)).toFixed(scope.decimalPlaces)));
                                          }
  
                                          // update angular
                                          scope.$apply();
  
                                          previousProposal = proposal;
  
                                      }
  
                                      previousClick = currentClick;
  
                                  }).bind(offEvent, function () {
  
                                      if (angular.isFunction(scope.onHandleUp)) {
                                          scope.onHandleUp();
                                      }
  
                                      // unbind listeners
                                      $document.off(moveEvent);
                                      $document.off(offEvent);
  
                                      angular.element('body').removeClass('ngrs-touching');
  
                                      // cancel down flag
                                      down = false;
  
                                      // remove down and over class
                                      $handle.removeClass('ngrs-down');
                                      $handle.removeClass('ngrs-over');
  
                                      // remove active class
                                      $slider.removeClass('ngrs-focus ' + handleDownClass);
  
                                  });
                              } else {
                                  if (angular.isFunction(scope.onErrorMessage)) {
                                      scope.onErrorMessage();
                                  }
                              }
  
                          }).on(overEvent, function () {
                              $handle.addClass('ngrs-over');
                          }).on(outEvent, function () {
                              if (!down) {
                                  $handle.removeClass('ngrs-over');
                              }
                          });
                      }
  
                      function throwError(message) {
                          scope.disabled = true;
                          throw new Error('RangeSlider: ' + message);
                      }
  
                      function throwWarning(message) {
                          $log.warn(message);
                      }
  
                      /**
                       * DESTROY
                       */
  
                      scope.$on('$destroy', function () {
  
                          // unbind event from slider
                          $slider.off(eventNamespace);
  
                          // unbind from body
                          angular.element('body').off(eventNamespace);
  
                          // unbind from document
                          $document.off(eventNamespace);
  
                          // unbind from handles
                          for (var i = 0, l = handles.length; i < l; i++) {
                              handles[i].off(eventNamespace);
                              handles[i].off(eventNamespace + 'X');
                          }
  
                      });
  
                      /**
                       * INIT
                       */
  
                      $slider
                      // disable selection
                          .bind('selectstart' + eventNamespace, function (event) {
                              return false;
                          })
                          // stop propagation
                          .bind('click', function (event) {
                              event.stopPropagation();
                          });
  
                      // bind events to each handle
                      handleMove(1);
                  }
              };
          }]);
  
      angular.module('ui-rangeSliderReverse', [])
          .directive('rangeSliderReverse', ['$document', '$filter', '$log', function ($document, $filter, $log) {
  
              // test for mouse, pointer or touch
              var eventNamespace = '.rangeSlider',
  
                  defaults = {
                      disabled: false,
                      orientation: 'horizontal',
                      step: 0,
                      decimalPlaces: 0,
                      showValues: true,
                      preventEqualMinMax: false,
                      attachHandleValues: false
                  },
  
                  // Determine the events to bind. IE11 implements pointerEvents without
                  // a prefix, which breaks compatibility with the IE10 implementation.
                  /** @const */
                  actions = window.navigator.pointerEnabled ? {
                      start: 'pointerdown',
                      move: 'pointermove',
                      end: 'pointerup',
                      over: 'pointerdown',
                      out: 'mouseout'
                  } : window.navigator.msPointerEnabled ? {
                      start: 'MSPointerDown',
                      move: 'MSPointerMove',
                      end: 'MSPointerUp',
                      over: 'MSPointerDown',
                      out: 'mouseout'
                  } : {
                      start: 'mousedown touchstart',
                      move: 'mousemove touchmove',
                      end: 'mouseup touchend',
                      over: 'mouseover touchstart',
                      out: 'mouseout'
                  },
  
                  onEvent = actions.start + eventNamespace,
                  moveEvent = actions.move + eventNamespace,
                  offEvent = actions.end + eventNamespace,
                  overEvent = actions.over + eventNamespace,
                  outEvent = actions.out + eventNamespace,
  
                  // get standarised clientX and clientY
                  client = function (f) {
                      try {
                          return [(f.clientX || f.originalEvent.clientX || f.originalEvent.touches[0].clientX), (f.clientY || f.originalEvent.clientY || f.originalEvent.touches[0].clientY)];
                      } catch (e) {
                          return ['x', 'y'];
                      }
                  },
  
                  restrict = function (value) {
  
                      // normalize so it can't move out of bounds
                      return (value < 0 ? 0 : (value > 100 ? 100 : value));
  
                  },
  
                  isNumber = function (n) {
                      // console.log(n);
                      return !isNaN(parseFloat(n)) && isFinite(n);
                  },
  
                  scopeOptions = {
                      disableMessage: '@',
                      disabled: '=?',
                      min: '=',
                      max: '=',
                      modelMin: '=?',
                      modelMax: '=?',
                      onErrorMessage:'&',
                      onHandleDown: '&', // calls optional function when handle is grabbed
                      onHandleUp: '&', // calls optional function when handle is released
                      orientation: '@', // options: horizontal | vertical | vertical left | vertical right
                      step: '@',
                      decimalPlaces: '@',
                      filter: '@',
                      filterOptions: '@',
                      showValues: '@',
                      pinHandle: '@',
                      preventEqualMinMax: '@',
                      attachHandleValues: '@',
                      getterSetter: '@' // Allow the use of getterSetters for model values
                  };
  
              if (legacySupport) {
                  // make optional properties required
                  scopeOptions.disabled = '=';
                  scopeOptions.modelMin = '=';
                  scopeOptions.modelMax = '=';
              }
  
              // if (EVENT < 4) {
              //     // some sort of touch has been detected
              //     angular.element('html').addClass('ngrs-touch');
              // } else {
              //     angular.element('html').addClass('ngrs-no-touch');
              // }
  
  
              return {
                  restrict: 'A',
                  replace: true,
                  template: ['<div class="ngrs-range-slider">',
                      '<div class="ngrs-runner">',
                      '<div class="ngrs-handle ngrs-handle-max"><i></i></div>',
                      '<div class="ngrs-join4"></div>',
                      '<div class="ngrs-join3"></div>',
                      '</div>',
                      '<div class="ngrs-value-runner">',
                      '<div class="ngrs-value ngrs-value-min" ng-show="showValues"><div>{{filteredModelMin}}</div></div>',
                      '<div class="ngrs-value ngrs-value-max" ng-show="showValues"><div>{{filteredModelMax}}</div></div>',
                      '</div>',
                      '</div>'
                  ].join(''),
                  scope: scopeOptions,
                  link: function (scope, element, attrs, controller) {
  
                      /**
                       *  FIND ELEMENTS
                       */
  
                      var $slider = angular.element(element),
                          handles = [element.find('.ngrs-handle-min'), element.find('.ngrs-handle-max')],
                          values = [element.find('.ngrs-value-min'), element.find('.ngrs-value-max')],
                          join = element.find('.ngrs-join3'),
                          join2 = element.find('.ngrs-join4'),
                          pos = 'left',
                          posOpp = 'right',
                          orientation = 0,
                          allowedRange = [0, 0],
                          range = 0,
                          down = false;
  
                      // filtered
                      scope.filteredModelMin = modelMin();
                      scope.filteredModelMax = modelMax();
  
                      /**
                       *  FALL BACK TO DEFAULTS FOR SOME ATTRIBUTES
                       */
  
                      attrs.$observe('disabled', function (val) {
                          if (!angular.isDefined(val)) {
                              scope.disabled = defaults.disabled;
                          }
  
                          scope.$watch('disabled', setDisabledStatus);
                      });
  
                      attrs.$observe('orientation', function (val) {
                          if (!angular.isDefined(val)) {
                              scope.orientation = defaults.orientation;
                          }
  
                          var classNames = scope.orientation.split(' '),
                              useClass;
  
                          for (var i = 0, l = classNames.length; i < l; i++) {
                              classNames[i] = 'ngrs-' + classNames[i];
                          }
  
                          useClass = classNames.join(' ');
  
                          // add class to element
                          $slider.addClass(useClass);
  
                          // update pos
                          if (scope.orientation === 'vertical' || scope.orientation === 'vertical left' || scope.orientation === 'vertical right') {
                              pos = 'top';
                              posOpp = 'bottom';
                              orientation = 1;
                          }
                      });
  
                      attrs.$observe('step', function (val) {
                          if (!angular.isDefined(val)) {
                              scope.step = defaults.step;
                          }
                      });
  
                      attrs.$observe('decimalPlaces', function (val) {
                          if (!angular.isDefined(val)) {
                              scope.decimalPlaces = defaults.decimalPlaces;
                          }
                      });
  
                      attrs.$observe('showValues', function (val) {
                          if (!angular.isDefined(val)) {
                              scope.showValues = defaults.showValues;
                          } else {
                              if (val === 'false') {
                                  scope.showValues = false;
                              } else {
                                  scope.showValues = true;
                              }
                          }
                      });
  
                      attrs.$observe('pinHandle', function (val) {
                          if (!angular.isDefined(val)) {
                              scope.pinHandle = null;
                          } else {
                              if (val === 'min' || val === 'max') {
                                  scope.pinHandle = val;
                              } else {
                                  scope.pinHandle = null;
                              }
                          }
  
                          scope.$watch('pinHandle', setPinHandle);
                      });
  
                      attrs.$observe('preventEqualMinMax', function (val) {
                          if (!angular.isDefined(val)) {
                              scope.preventEqualMinMax = defaults.preventEqualMinMax;
                          } else {
                              if (val === 'false') {
                                  scope.preventEqualMinMax = false;
                              } else {
                                  scope.preventEqualMinMax = true;
                              }
                          }
                      });
  
                      attrs.$observe('attachHandleValues', function (val) {
                          if (!angular.isDefined(val)) {
                              scope.attachHandleValues = defaults.attachHandleValues;
                          } else {
                              if (val === 'true' || val === '') {
                                  // flag as true
                                  scope.attachHandleValues = true;
                                  // add class to runner
                                  element.find('.ngrs-value-runner').addClass('ngrs-attached-handles');
                              } else {
                                  scope.attachHandleValues = false;
                              }
                          }
                      });
  
                      // GetterSetters for model values
  
                      function modelMin(newValue) {
                          if (scope.getterSetter) {
                              return arguments.length ? scope.modelMin(newValue) : scope.modelMin();
                          } else {
                              return arguments.length ? (scope.modelMin = newValue) : scope.modelMin;
                          }
                      }
  
                      function modelMax(newValue) {
                          if (scope.getterSetter) {
                              return arguments.length ? scope.modelMax(newValue) : scope.modelMax();
                          } else {
                              return arguments.length ? (scope.modelMax = newValue) : scope.modelMax;
                          }
                      }
  
                      // listen for changes to values
                      scope.$watch('min', setMinMax);
                      scope.$watch('max', setMinMax);
  
                      scope.$watch(function () {
                          return modelMin();
                      }, setModelMinMax);
                      scope.$watch(function () {
                          return modelMax();
                      }, setModelMinMax);
  
                      /**
                       * HANDLE CHANGES
                       */
  
                      function setPinHandle(status) {
                          if (status === "min") {
                              angular.element(handles[0]).css('display', 'none');
                              angular.element(handles[1]).css('display', 'block');
                          } else if (status === "max") {
                              angular.element(handles[0]).css('display', 'block');
                              angular.element(handles[1]).css('display', 'none');
                          } else {
                              angular.element(handles[0]).css('display', 'block');
                              angular.element(handles[1]).css('display', 'block');
                          }
                      }
  
                      function setDisabledStatus(status) {
                          if (status) {
                              $slider.addClass('ngrs-disabled');
                          } else {
                              $slider.removeClass('ngrs-disabled');
                          }
                      }
  
                      function setMinMax() {
  
                          if (scope.min > scope.max) {
                              throwError('min must be less than or equal to max');
                          }
  
                          // only do stuff when both values are ready
                          if (angular.isDefined(scope.min) && angular.isDefined(scope.max)) {
  
                              // make sure they are numbers
                              if (!isNumber(scope.min)) {
                                  throwError('min must be a number');
                              }
  
                              if (!isNumber(scope.max)) {
                                  throwError('max must be a number');
                              }
  
                              range = scope.max - scope.min;
                              allowedRange = [scope.min, scope.max];
  
                              // update models too
                              setModelMinMax();
  
                          }
                      }
  
                      function setModelMinMax() {
  
                          if (modelMin() > modelMax()) {
                              throwWarning('modelMin must be less than or equal to modelMax');
                              // reset values to correct
                              modelMin(modelMax());
                          }
  
                          // only do stuff when both values are ready
                          if (
                              (angular.isDefined(modelMin()) || scope.pinHandle === 'min') &&
                              (angular.isDefined(modelMax()) || scope.pinHandle === 'max')
                          ) {
  
                              // make sure they are numbers
                              if (!isNumber(modelMin())) {
                                  if (scope.pinHandle !== 'min') {
                                      throwWarning('modelMin must be a number');
                                  }
                                  modelMin(scope.min);
                              }
  
                              if (!isNumber(modelMax())) {
                                  if (scope.pinHandle !== 'max') {
                                      throwWarning('modelMax must be a number');
                                  }
                                  modelMax(scope.max);
                              }
  
                              var handle1pos = restrict(((modelMin() - scope.min) / range) * 100),
                                  handle2pos = restrict(((modelMax() - scope.min) / range) * 100),
                                  value1pos,
                                  value2pos;
  
                              if (scope.attachHandleValues) {
                                  value1pos = handle1pos;
                                  value2pos = handle2pos;
                              }
  
                              // make sure the model values are within the allowed range
                              modelMin(Math.max(scope.min, modelMin()));
                              modelMax(Math.min(scope.max, modelMax()));
  
                              if (scope.filter && scope.filterOptions) {
                                  scope.filteredModelMin = $filter(scope.filter)(modelMin(), scope.filterOptions);
                                  scope.filteredModelMax = $filter(scope.filter)(modelMax(), scope.filterOptions);
                              } else if (scope.filter) {
  
                                  var filterTokens = scope.filter.split(':'),
                                      filterName = scope.filter.split(':')[0],
                                      filterOptions = filterTokens.slice().slice(1),
                                      modelMinOptions,
                                      modelMaxOptions;
  
                                  // properly parse string and number args
                                  filterOptions = filterOptions.map(function (arg) {
                                      if (isNumber(arg)) {
                                          return +arg;
                                      } else if ((arg[0] == "\"" && arg[arg.length - 1] == "\"") || (arg[0] == "\'" && arg[arg.length - 1] == "\'")) {
                                          return arg.slice(1, -1);
                                      }
                                  });
  
                                  modelMinOptions = filterOptions.slice();
                                  modelMaxOptions = filterOptions.slice();
                                  modelMinOptions.unshift(modelMin());
                                  modelMaxOptions.unshift(modelMax());
  
                                  scope.filteredModelMin = $filter(filterName).apply(null, modelMinOptions);
                                  scope.filteredModelMax = $filter(filterName).apply(null, modelMaxOptions);
                              } else {
                                  scope.filteredModelMin = modelMin();
                                  scope.filteredModelMax = modelMax();
                              }
  
                              // check for no range
                              if (scope.min === scope.max && modelMin() == modelMax()) {
  
                                  // reposition handles
                                  angular.element(handles[0]).css(pos, '0%');
                                  angular.element(handles[1]).css(pos, '100%');
  
                                  if (scope.attachHandleValues) {
                                      // reposition values
                                      angular.element(values[0]).css(pos, '0%');
                                      angular.element(values[1]).css(pos, '100%');
                                  }
  
                                  // reposition join
                                  angular.element(join).css(pos, '0%').css(posOpp, '0%');
                                  angular.element(join2).css(pos, '100%').css(posOpp, '100%');
  
                              } else {
  
                                  // reposition handles
                                  angular.element(handles[0]).css(pos, handle1pos + '%');
                                  angular.element(handles[1]).css(pos, handle2pos + '%');
  
                                  if (scope.attachHandleValues) {
                                      // reposition values
                                      angular.element(values[0]).css(pos, value1pos + '%');
                                      angular.element(values[1]).css(pos, value2pos + '%');
                                      angular.element(values[1]).css(posOpp, 'auto');
                                  }
  
                                  // reposition join
                                  angular.element(join).css(pos, handle1pos + '%').css(posOpp, (100 - handle2pos) + '%');
                                  if (handle1pos == 0) {
                                      angular.element(join2).css(pos, '0%').css(posOpp, '0%');
                                  } else {
                                      angular.element(join2).css(pos, handle2pos + '%').css(posOpp, (100 - handle2pos) + '%');
                                  }
  
                                  // ensure min handle can't be hidden behind max handle
                                  if (handle1pos > 95) {
                                      angular.element(handles[0]).css('z-index', 3);
                                  }
                              }
  
                          }
  
                      }
  
                      function handleMove(index) {
                          var errorMsg = scope.disableMessage || '应用DR不能在Group间形成闭环!';
  
                          var $handle = handles[index];
  
                          // on mousedown / touchstart
                          $handle.bind(onEvent + 'X', function (event) {
  
                              var handleDownClass = (index === 0 ? 'ngrs-handle-min' : 'ngrs-handle-max') + '-down',
                                  //unbind = $handle.add($document).add('body'),
                                  modelValue = (index === 0 ? modelMin() : modelMax()) - scope.min,
                                  originalPosition = (modelValue / range) * 100,
                                  originalClick = client(event),
                                  previousClick = originalClick,
                                  previousProposal = false;
  
                              if (angular.isFunction(scope.onHandleDown)) {
                                  scope.onHandleDown();
                              }
  
                              // stop user accidentally selecting stuff
                              angular.element('body').bind('selectstart' + eventNamespace, function () {
                                  return false;
                              });
  
                              // only do stuff if we are disabled
                              if (!scope.disabled) {
  
                                  // flag as down
                                  down = true;
  
                                  // add down class
                                  $handle.addClass('ngrs-down');
  
                                  $slider.addClass('ngrs-focus ' + handleDownClass);
  
                                  // add touch class for MS styling
                                  angular.element('body').addClass('ngrs-touching');
  
                                  // listen for mousemove / touchmove document events
                                  $document.bind(moveEvent, function (e) {
                                      // prevent default
                                      e.preventDefault();
  
                                      var currentClick = client(e),
                                          movement,
                                          proposal,
                                          other,
                                          per = (scope.step / range) * 100,
                                          otherModelPosition = (((index === 0 ? modelMax() : modelMin()) - scope.min) / range) * 100;
  
                                      if (currentClick[0] === "x") {
                                          return;
                                      }
  
                                      // calculate deltas
                                      currentClick[0] -= originalClick[0];
                                      currentClick[1] -= originalClick[1];
  
                                      // has movement occurred on either axis?
                                      movement = [
                                          (previousClick[0] !== currentClick[0]), (previousClick[1] !== currentClick[1])
                                      ];
  
                                      // propose a movement
                                      proposal = originalPosition + ((currentClick[orientation] * 100) / (orientation ? $slider.height() : $slider.width()));
  
                                      // normalize so it can't move out of bounds
                                      proposal = restrict(proposal);
  
                                      if (scope.preventEqualMinMax) {
  
                                          if (per === 0) {
                                              per = (1 / range) * 100; // restrict to 1
                                          }
  
                                          if (index === 0) {
                                              otherModelPosition = otherModelPosition - per;
                                          } else if (index === 1) {
                                              otherModelPosition = otherModelPosition + per;
                                          }
                                      }
  
                                      // check which handle is being moved and add / remove margin
                                      if (index === 0) {
                                          proposal = proposal > otherModelPosition ? otherModelPosition : proposal;
                                      } else if (index === 1) {
                                          proposal = proposal < otherModelPosition ? otherModelPosition : proposal;
                                      }
  
                                      if (scope.step > 0) {
                                          // only change if we are within the extremes, otherwise we get strange rounding
                                          if (proposal < 100 && proposal > 0) {
                                              proposal = Math.round(proposal / per) * per;
                                          }
                                      }
  
                                      if (proposal > 95 && index === 0) {
                                          $handle.css('z-index', 3);
                                      } else {
                                          $handle.css('z-index', '');
                                      }
  
                                      if (movement[orientation] && proposal != previousProposal) {
  
                                          if (index === 0) {
  
                                              // update model as we slide
                                              modelMin(parseFloat(parseFloat((((proposal * range) / 100) + scope.min)).toFixed(scope.decimalPlaces)));
  
                                          } else if (index === 1) {
  
                                              modelMax(parseFloat(parseFloat((((proposal * range) / 100) + scope.min)).toFixed(scope.decimalPlaces)));
                                          }
  
                                          // update angular
                                          scope.$apply();
  
                                          previousProposal = proposal;
  
                                      }
  
                                      previousClick = currentClick;
  
                                  }).bind(offEvent, function () {
  
                                      if (angular.isFunction(scope.onHandleUp)) {
                                          scope.onHandleUp();
                                      }
  
                                      // unbind listeners
                                      $document.off(moveEvent);
                                      $document.off(offEvent);
  
                                      angular.element('body').removeClass('ngrs-touching');
  
                                      // cancel down flag
                                      down = false;
  
                                      // remove down and over class
                                      $handle.removeClass('ngrs-down');
                                      $handle.removeClass('ngrs-over');
  
                                      // remove active class
                                      $slider.removeClass('ngrs-focus ' + handleDownClass);
  
                                  });
                              } else {
                                  if (angular.isFunction(scope.onErrorMessage)) {
                                      scope.onErrorMessage();
                                  }
                              }
  
                          }).on(overEvent, function () {
                              $handle.addClass('ngrs-over');
                          }).on(outEvent, function () {
                              if (!down) {
                                  $handle.removeClass('ngrs-over');
                              }
                          });
                      }
  
                      function throwError(message) {
                          scope.disabled = true;
                          throw new Error('RangeSlider: ' + message);
                      }
  
                      function throwWarning(message) {
                          $log.warn(message);
                      }
  
                      /**
                       * DESTROY
                       */
  
                      scope.$on('$destroy', function () {
  
                          // unbind event from slider
                          $slider.off(eventNamespace);
  
                          // unbind from body
                          angular.element('body').off(eventNamespace);
  
                          // unbind from document
                          $document.off(eventNamespace);
  
                          // unbind from handles
                          for (var i = 0, l = handles.length; i < l; i++) {
                              handles[i].off(eventNamespace);
                              handles[i].off(eventNamespace + 'X');
                          }
  
                      });
  
                      /**
                       * INIT
                       */
  
                      $slider
                      // disable selection
                          .bind('selectstart' + eventNamespace, function (event) {
                              return false;
                          })
                          // stop propagation
                          .bind('click', function (event) {
                              event.stopPropagation();
                          });
  
                      // bind events to each handle
                      handleMove(1);
                  }
              };
          }]);
  
      window.requestAnimFrame = (function () {
          return window.requestAnimationFrame ||
              window.webkitRequestAnimationFrame ||
              window.mozRequestAnimationFrame ||
              function (callback) {
                  window.setTimeout(callback, 1000 / 60);
              };
      })();
  }());
  