mirror of
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102 lines
2.4 KiB
HTML
102 lines
2.4 KiB
HTML
<!--
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@license
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Copyright (c) 2015 The Polymer Project Authors. All rights reserved.
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This code may only be used under the BSD style license found at http://polymer.github.io/LICENSE.txt
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The complete set of authors may be found at http://polymer.github.io/AUTHORS.txt
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The complete set of contributors may be found at http://polymer.github.io/CONTRIBUTORS.txt
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Code distributed by Google as part of the polymer project is also
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subject to an additional IP rights grant found at http://polymer.github.io/PATENTS.txt
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-->
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<link rel="import" href="../polymer/polymer.html">
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<link rel="import" href="../iron-meta/iron-meta.html">
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<script>
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/**
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* Use `Polymer.IronValidatableBehavior` to implement an element that validates user input.
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*
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* ### Accessiblity
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*
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* Changing the `invalid` property, either manually or by calling `validate()` will update the
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* `aria-invalid` attribute.
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*
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* @demo demo/index.html
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* @polymerBehavior
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*/
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Polymer.IronValidatableBehavior = {
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properties: {
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/**
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* Namespace for this validator.
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*/
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validatorType: {
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type: String,
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value: 'validator'
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},
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/**
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* Name of the validator to use.
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*/
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validator: {
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type: String
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},
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/**
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* True if the last call to `validate` is invalid.
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*/
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invalid: {
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notify: true,
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reflectToAttribute: true,
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type: Boolean,
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value: false
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},
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_validatorMeta: {
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type: Object
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}
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},
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observers: [
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'_invalidChanged(invalid)'
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],
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get _validator() {
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return this._validatorMeta && this._validatorMeta.byKey(this.validator);
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},
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ready: function() {
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this._validatorMeta = new Polymer.IronMeta({type: this.validatorType});
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},
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_invalidChanged: function() {
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if (this.invalid) {
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this.setAttribute('aria-invalid', 'true');
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} else {
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this.removeAttribute('aria-invalid');
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}
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},
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/**
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* @return {boolean} True if the validator `validator` exists.
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*/
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hasValidator: function() {
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return this._validator != null;
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},
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/**
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* @param {Object} values Passed to the validator's `validate()` function.
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* @return {boolean} True if `values` is valid.
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*/
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validate: function(values) {
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var valid = this._validator && this._validator.validate(values);
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this.invalid = !valid;
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return valid;
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}
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};
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</script>
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