diff core/misc/states.js @ 0:c75dbcec494b

Initial commit from drush-created site

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/core/misc/states.js	Thu Jul 05 14:24:15 2018 +0000
@@ -0,0 +1,377 @@
+/**
+* DO NOT EDIT THIS FILE.
+* See the following change record for more information,
+* https://www.drupal.org/node/2815083
+* @preserve
+**/
+
+(function ($, Drupal) {
+  var states = {
+    postponed: []
+  };
+
+  Drupal.states = states;
+
+  Drupal.behaviors.states = {
+    attach: function attach(context, settings) {
+      var $states = $(context).find('[data-drupal-states]');
+      var il = $states.length;
+
+      var _loop = function _loop(i) {
+        var config = JSON.parse($states[i].getAttribute('data-drupal-states'));
+        Object.keys(config || {}).forEach(function (state) {
+          new states.Dependent({
+            element: $($states[i]),
+            state: states.State.sanitize(state),
+            constraints: config[state]
+          });
+        });
+      };
+
+      for (var i = 0; i < il; i++) {
+        _loop(i);
+      }
+
+      while (states.postponed.length) {
+        states.postponed.shift()();
+      }
+    }
+  };
+
+  states.Dependent = function (args) {
+    var _this = this;
+
+    $.extend(this, { values: {}, oldValue: null }, args);
+
+    this.dependees = this.getDependees();
+    Object.keys(this.dependees || {}).forEach(function (selector) {
+      _this.initializeDependee(selector, _this.dependees[selector]);
+    });
+  };
+
+  states.Dependent.comparisons = {
+    RegExp: function RegExp(reference, value) {
+      return reference.test(value);
+    },
+    Function: function Function(reference, value) {
+      return reference(value);
+    },
+    Number: function Number(reference, value) {
+      return typeof value === 'string' ? _compare2(reference.toString(), value) : _compare2(reference, value);
+    }
+  };
+
+  states.Dependent.prototype = {
+    initializeDependee: function initializeDependee(selector, dependeeStates) {
+      var state = void 0;
+      var self = this;
+
+      function stateEventHandler(e) {
+        self.update(e.data.selector, e.data.state, e.value);
+      }
+
+      this.values[selector] = {};
+
+      for (var i in dependeeStates) {
+        if (dependeeStates.hasOwnProperty(i)) {
+          state = dependeeStates[i];
+
+          if ($.inArray(state, dependeeStates) === -1) {
+            continue;
+          }
+
+          state = states.State.sanitize(state);
+
+          this.values[selector][state.name] = null;
+
+          $(selector).on('state:' + state, { selector: selector, state: state }, stateEventHandler);
+
+          new states.Trigger({ selector: selector, state: state });
+        }
+      }
+    },
+    compare: function compare(reference, selector, state) {
+      var value = this.values[selector][state.name];
+      if (reference.constructor.name in states.Dependent.comparisons) {
+        return states.Dependent.comparisons[reference.constructor.name](reference, value);
+      }
+
+      return _compare2(reference, value);
+    },
+    update: function update(selector, state, value) {
+      if (value !== this.values[selector][state.name]) {
+        this.values[selector][state.name] = value;
+        this.reevaluate();
+      }
+    },
+    reevaluate: function reevaluate() {
+      var value = this.verifyConstraints(this.constraints);
+
+      if (value !== this.oldValue) {
+        this.oldValue = value;
+
+        value = invert(value, this.state.invert);
+
+        this.element.trigger({ type: 'state:' + this.state, value: value, trigger: true });
+      }
+    },
+    verifyConstraints: function verifyConstraints(constraints, selector) {
+      var result = void 0;
+      if ($.isArray(constraints)) {
+        var hasXor = $.inArray('xor', constraints) === -1;
+        var len = constraints.length;
+        for (var i = 0; i < len; i++) {
+          if (constraints[i] !== 'xor') {
+            var constraint = this.checkConstraints(constraints[i], selector, i);
+
+            if (constraint && (hasXor || result)) {
+              return hasXor;
+            }
+            result = result || constraint;
+          }
+        }
+      } else if ($.isPlainObject(constraints)) {
+          for (var n in constraints) {
+            if (constraints.hasOwnProperty(n)) {
+              result = ternary(result, this.checkConstraints(constraints[n], selector, n));
+
+              if (result === false) {
+                return false;
+              }
+            }
+          }
+        }
+      return result;
+    },
+    checkConstraints: function checkConstraints(value, selector, state) {
+      if (typeof state !== 'string' || /[0-9]/.test(state[0])) {
+        state = null;
+      } else if (typeof selector === 'undefined') {
+        selector = state;
+        state = null;
+      }
+
+      if (state !== null) {
+        state = states.State.sanitize(state);
+        return invert(this.compare(value, selector, state), state.invert);
+      }
+
+      return this.verifyConstraints(value, selector);
+    },
+    getDependees: function getDependees() {
+      var cache = {};
+
+      var _compare = this.compare;
+      this.compare = function (reference, selector, state) {
+        (cache[selector] || (cache[selector] = [])).push(state.name);
+      };
+
+      this.verifyConstraints(this.constraints);
+
+      this.compare = _compare;
+
+      return cache;
+    }
+  };
+
+  states.Trigger = function (args) {
+    $.extend(this, args);
+
+    if (this.state in states.Trigger.states) {
+      this.element = $(this.selector);
+
+      if (!this.element.data('trigger:' + this.state)) {
+        this.initialize();
+      }
+    }
+  };
+
+  states.Trigger.prototype = {
+    initialize: function initialize() {
+      var _this2 = this;
+
+      var trigger = states.Trigger.states[this.state];
+
+      if (typeof trigger === 'function') {
+        trigger.call(window, this.element);
+      } else {
+        Object.keys(trigger || {}).forEach(function (event) {
+          _this2.defaultTrigger(event, trigger[event]);
+        });
+      }
+
+      this.element.data('trigger:' + this.state, true);
+    },
+    defaultTrigger: function defaultTrigger(event, valueFn) {
+      var oldValue = valueFn.call(this.element);
+
+      this.element.on(event, $.proxy(function (e) {
+        var value = valueFn.call(this.element, e);
+
+        if (oldValue !== value) {
+          this.element.trigger({ type: 'state:' + this.state, value: value, oldValue: oldValue });
+          oldValue = value;
+        }
+      }, this));
+
+      states.postponed.push($.proxy(function () {
+        this.element.trigger({ type: 'state:' + this.state, value: oldValue, oldValue: null });
+      }, this));
+    }
+  };
+
+  states.Trigger.states = {
+    empty: {
+      keyup: function keyup() {
+        return this.val() === '';
+      }
+    },
+
+    checked: {
+      change: function change() {
+        var checked = false;
+        this.each(function () {
+          checked = $(this).prop('checked');
+
+          return !checked;
+        });
+        return checked;
+      }
+    },
+
+    value: {
+      keyup: function keyup() {
+        if (this.length > 1) {
+          return this.filter(':checked').val() || false;
+        }
+        return this.val();
+      },
+      change: function change() {
+        if (this.length > 1) {
+          return this.filter(':checked').val() || false;
+        }
+        return this.val();
+      }
+    },
+
+    collapsed: {
+      collapsed: function collapsed(e) {
+        return typeof e !== 'undefined' && 'value' in e ? e.value : !this.is('[open]');
+      }
+    }
+  };
+
+  states.State = function (state) {
+    this.pristine = state;
+    this.name = state;
+
+    var process = true;
+    do {
+      while (this.name.charAt(0) === '!') {
+        this.name = this.name.substring(1);
+        this.invert = !this.invert;
+      }
+
+      if (this.name in states.State.aliases) {
+        this.name = states.State.aliases[this.name];
+      } else {
+        process = false;
+      }
+    } while (process);
+  };
+
+  states.State.sanitize = function (state) {
+    if (state instanceof states.State) {
+      return state;
+    }
+
+    return new states.State(state);
+  };
+
+  states.State.aliases = {
+    enabled: '!disabled',
+    invisible: '!visible',
+    invalid: '!valid',
+    untouched: '!touched',
+    optional: '!required',
+    filled: '!empty',
+    unchecked: '!checked',
+    irrelevant: '!relevant',
+    expanded: '!collapsed',
+    open: '!collapsed',
+    closed: 'collapsed',
+    readwrite: '!readonly'
+  };
+
+  states.State.prototype = {
+    invert: false,
+
+    toString: function toString() {
+      return this.name;
+    }
+  };
+
+  var $document = $(document);
+  $document.on('state:disabled', function (e) {
+    if (e.trigger) {
+      $(e.target).prop('disabled', e.value).closest('.js-form-item, .js-form-submit, .js-form-wrapper').toggleClass('form-disabled', e.value).find('select, input, textarea').prop('disabled', e.value);
+    }
+  });
+
+  $document.on('state:required', function (e) {
+    if (e.trigger) {
+      if (e.value) {
+        var label = 'label' + (e.target.id ? '[for=' + e.target.id + ']' : '');
+        var $label = $(e.target).attr({ required: 'required', 'aria-required': 'aria-required' }).closest('.js-form-item, .js-form-wrapper').find(label);
+
+        if (!$label.hasClass('js-form-required').length) {
+          $label.addClass('js-form-required form-required');
+        }
+      } else {
+        $(e.target).removeAttr('required aria-required').closest('.js-form-item, .js-form-wrapper').find('label.js-form-required').removeClass('js-form-required form-required');
+      }
+    }
+  });
+
+  $document.on('state:visible', function (e) {
+    if (e.trigger) {
+      $(e.target).closest('.js-form-item, .js-form-submit, .js-form-wrapper').toggle(e.value);
+    }
+  });
+
+  $document.on('state:checked', function (e) {
+    if (e.trigger) {
+      $(e.target).prop('checked', e.value);
+    }
+  });
+
+  $document.on('state:collapsed', function (e) {
+    if (e.trigger) {
+      if ($(e.target).is('[open]') === e.value) {
+        $(e.target).find('> summary').trigger('click');
+      }
+    }
+  });
+
+  function ternary(a, b) {
+    if (typeof a === 'undefined') {
+      return b;
+    } else if (typeof b === 'undefined') {
+      return a;
+    }
+
+    return a && b;
+  }
+
+  function invert(a, invertState) {
+    return invertState && typeof a !== 'undefined' ? !a : a;
+  }
+
+  function _compare2(a, b) {
+    if (a === b) {
+      return typeof a === 'undefined' ? a : true;
+    }
+
+    return typeof a === 'undefined' || typeof b === 'undefined';
+  }
+})(jQuery, Drupal);
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