drupal/core/misc/states.js

373 lines
10 KiB
JavaScript

/**
* DO NOT EDIT THIS FILE.
* See the following change record for more information,
* https://www.drupal.org/node/2815083
* @preserve
**/
(function ($, Drupal) {
var states = Drupal.states = {
postponed: []
};
Drupal.behaviors.states = {
attach: function attach(context, settings) {
var $states = $(context).find('[data-drupal-states]');
var config = void 0;
var state = void 0;
var il = $states.length;
for (var i = 0; i < il; i++) {
config = JSON.parse($states[i].getAttribute('data-drupal-states'));
for (state in config) {
if (config.hasOwnProperty(state)) {
new states.Dependent({
element: $($states[i]),
state: states.State.sanitize(state),
constraints: config[state]
});
}
}
}
while (states.postponed.length) {
states.postponed.shift()();
}
}
};
states.Dependent = function (args) {
$.extend(this, { values: {}, oldValue: null }, args);
this.dependees = this.getDependees();
for (var selector in this.dependees) {
if (this.dependees.hasOwnProperty(selector)) {
this.initializeDependee(selector, this.dependees[selector]);
}
}
};
states.Dependent.comparisons = {
RegExp: function RegExp(reference, value) {
return reference.test(value);
},
Function: function Function(reference, value) {
return reference(value);
},
Number: function Number(reference, value) {
return typeof value === 'string' ? _compare2(reference.toString(), value) : _compare2(reference, value);
}
};
states.Dependent.prototype = {
initializeDependee: function initializeDependee(selector, dependeeStates) {
var state = void 0;
var self = this;
function stateEventHandler(e) {
self.update(e.data.selector, e.data.state, e.value);
}
this.values[selector] = {};
for (var i in dependeeStates) {
if (dependeeStates.hasOwnProperty(i)) {
state = dependeeStates[i];
if ($.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 trigger = states.Trigger.states[this.state];
if (typeof trigger === 'function') {
trigger.call(window, this.element);
} else {
for (var event in trigger) {
if (trigger.hasOwnProperty(event)) {
this.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 = 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);