paper-input-error.html
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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="../paper-styles/paper-styles.html">
<link rel="import" href="paper-input-addon-behavior.html">
<!--
`<paper-input-error>` is an error message for use with `<paper-input-container>`. The error is
displayed when the `<paper-input-container>` is `invalid`.
<paper-input-container>
<input is="iron-input" pattern="[0-9]*">
<paper-input-error>Only numbers are allowed!</paper-input-error>
</paper-input-container>
### Styling
The following custom properties and mixins are available for styling:
Custom property | Description | Default
----------------|-------------|----------
`--paper-input-container-invalid-color` | The foreground color of the error | `--google-red-500`
`--paper-input-error` | Mixin applied to the error | `{}`
-->
<dom-module id="paper-input-error">
<template>
<style>
:host {
display: inline-block;
visibility: hidden;
color: var(--paper-input-container-invalid-color, --google-red-500);
@apply(--paper-font-caption);
@apply(--paper-input-error);
position: absolute;
left:0;
right:0;
}
:host([invalid]) {
visibility: visible;
};
</style>
<content></content>
</template>
</dom-module>
<script>
Polymer({
is: 'paper-input-error',
behaviors: [
Polymer.PaperInputAddonBehavior
],
properties: {
/**
* True if the error is showing.
*/
invalid: {
readOnly: true,
reflectToAttribute: true,
type: Boolean
}
},
update: function(state) {
this._setInvalid(state.invalid);
}
});
</script>