paper-textarea.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="../iron-autogrow-textarea/iron-autogrow-textarea.html">
<link rel="import" href="paper-input-behavior.html">
<link rel="import" href="paper-input-container.html">
<link rel="import" href="paper-input-error.html">
<link rel="import" href="paper-input-char-counter.html">
<!--
`<paper-textarea>` is a multi-line text field with Material Design styling.
<paper-textarea label="Textarea label"></paper-textarea>
See `Polymer.PaperInputBehavior` for more API docs.
### Validation
Currently only `required` and `maxlength` validation is supported.
### Styling
See `Polymer.PaperInputContainer` for a list of custom properties used to
style this element.
-->
<dom-module id="paper-textarea">
<template>
<style>
:host {
display: block;
}
</style>
<paper-input-container no-label-float$="[[noLabelFloat]]" always-float-label="[[_computeAlwaysFloatLabel(alwaysFloatLabel,placeholder)]]" auto-validate$="[[autoValidate]]" disabled$="[[disabled]]" invalid="[[invalid]]">
<label hidden$="[[!label]]">[[label]]</label>
<iron-autogrow-textarea id="input" class="paper-input-input"
bind-value="{{value}}"
autocomplete$="[[autocomplete]]"
autofocus$="[[autofocus]]"
inputmode$="[[inputmode]]"
name$="[[name]]"
placeholder$="[[placeholder]]"
readonly$="[[readonly]]"
required$="[[required]]"
maxlength$="[[maxlength]]"
autocapitalize$="[[autocapitalize]]"
rows$="[[rows]]"
max-rows$="[[maxRows]]"
on-change="_onChange"></iron-autogrow-textarea>
<template is="dom-if" if="[[errorMessage]]">
<paper-input-error>[[errorMessage]]</paper-input-error>
</template>
<template is="dom-if" if="[[charCounter]]">
<paper-input-char-counter></paper-input-char-counter>
</template>
</paper-input-container>
</template>
</dom-module>
<script>
Polymer({
is: 'paper-textarea',
behaviors: [
Polymer.PaperInputBehavior
],
properties: {
_ariaLabelledBy: {
observer: '_ariaLabelledByChanged',
type: String
},
_ariaDescribedBy: {
observer: '_ariaDescribedByChanged',
type: String
},
/**
* The initial number of rows.
*
* @attribute rows
* @type number
* @default 1
*/
rows: {
type: Number,
value: 1
},
/**
* The maximum number of rows this element can grow to until it
* scrolls. 0 means no maximum.
*
* @attribute maxRows
* @type number
* @default 0
*/
maxRows: {
type: Number,
value: 0
}
},
_ariaLabelledByChanged: function(ariaLabelledBy) {
this.$.input.textarea.setAttribute('aria-labelledby', ariaLabelledBy);
},
_ariaDescribedByChanged: function(ariaDescribedBy) {
this.$.input.textarea.setAttribute('aria-describedby', ariaDescribedBy);
}
});
</script>