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<!--
@license
Copyright (c) 2015 The Polymer Project Authors. All rights reserved.
This code may only be used under the BSD style license found at http://polymer.github.io/LICENSE.txt
The complete set of authors may be found at http://polymer.github.io/AUTHORS.txt
The complete set of contributors may be found at http://polymer.github.io/CONTRIBUTORS.txt
Code distributed by Google as part of the polymer project is also
subject to an additional IP rights grant found at http://polymer.github.io/PATENTS.txt
-->
<link rel="import" href="../polymer/polymer.html">
<link rel="import" href="../iron-meta/iron-meta.html">
<script>
/**
* Use `Polymer.IronValidatableBehavior` to implement an element that validates user input.
*
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luigser
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*
* Changing the `invalid` property, either manually or by calling `validate()` will update the
* `aria-invalid` attribute.
*
* @demo demo/index.html
* @polymerBehavior
*/
Polymer.IronValidatableBehavior = {
properties: {
/**
* Namespace for this validator.
*/
validatorType: {
type: String,
value: 'validator'
},
/**
* Name of the validator to use.
*/
validator: {
type: String
},
/**
* True if the last call to `validate` is invalid.
*/
invalid: {
notify: true,
reflectToAttribute: true,
type: Boolean,
value: false
},
_validatorMeta: {
type: Object
}
},
observers: [
'_invalidChanged(invalid)'
],
get _validator() {
return this._validatorMeta && this._validatorMeta.byKey(this.validator);
},
ready: function() {
this._validatorMeta = new Polymer.IronMeta({type: this.validatorType});
},
_invalidChanged: function() {
if (this.invalid) {
this.setAttribute('aria-invalid', 'true');
} else {
this.removeAttribute('aria-invalid');
}
},
/**
* @return {boolean} True if the validator `validator` exists.
*/
hasValidator: function() {
return this._validator != null;
},
/**
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Controllet cross ...
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* Returns true if the `value` is valid, and updates `invalid`. If you want
* your element to have custom validation logic, do not override this method;
* override `_getValidity(value)` instead.
* @param {Object} value The value to be validated. By default, it is passed
* to the validator's `validate()` function, if a validator is set.
* @return {boolean} True if `value` is valid.
*/
validate: function(value) {
this.invalid = !this._getValidity(value);
return !this.invalid;
},
/**
* Returns true if `value` is valid. By default, it is passed
* to the validator's `validate()` function, if a validator is set. You
* should override this method if you want to implement custom validity
* logic for your element.
*
* @param {Object} value The value to be validated.
* @return {boolean} True if `value` is valid.
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