mirror of
https://github.com/jellyfin/jellyfin-web.git
synced 2024-11-18 03:18:19 -07:00
354 lines
9.0 KiB
HTML
354 lines
9.0 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-behaviors/iron-control-state.html">
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<link rel="import" href="../iron-flex-layout/iron-flex-layout.html">
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<link rel="import" href="../iron-validatable-behavior/iron-validatable-behavior.html">
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<link rel="import" href="../iron-form-element-behavior/iron-form-element-behavior.html">
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<!--
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`iron-autogrow-textarea` is an element containing a textarea that grows in height as more
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lines of input are entered. Unless an explicit height or the `maxRows` property is set, it will
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never scroll.
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Example:
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<iron-autogrow-textarea></iron-autogrow-textarea>
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### Styling
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The following custom properties and mixins are available for styling:
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Custom property | Description | Default
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----------------|-------------|----------
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`--iron-autogrow-textarea` | Mixin applied to the textarea | `{}`
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`--iron-autogrow-textarea-placeholder` | Mixin applied to the textarea placeholder | `{}`
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@group Iron Elements
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@hero hero.svg
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@demo demo/index.html
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-->
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<dom-module id="iron-autogrow-textarea">
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<template>
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<style>
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:host {
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display: inline-block;
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position: relative;
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width: 400px;
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border: 1px solid;
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padding: 2px;
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-moz-appearance: textarea;
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-webkit-appearance: textarea;
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overflow: hidden;
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}
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.mirror-text {
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visibility: hidden;
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word-wrap: break-word;
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}
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.fit {
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@apply(--layout-fit);
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}
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textarea {
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position: relative;
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outline: none;
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border: none;
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resize: none;
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background: inherit;
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color: inherit;
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/* see comments in template */
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width: 100%;
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height: 100%;
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font-size: inherit;
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font-family: inherit;
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line-height: inherit;
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text-align: inherit;
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@apply(--iron-autogrow-textarea);
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}
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::content textarea:invalid {
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box-shadow: none;
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}
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textarea::-webkit-input-placeholder {
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@apply(--iron-autogrow-textarea-placeholder);
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}
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textarea:-moz-placeholder {
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@apply(--iron-autogrow-textarea-placeholder);
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}
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textarea::-moz-placeholder {
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@apply(--iron-autogrow-textarea-placeholder);
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}
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textarea:-ms-input-placeholder {
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@apply(--iron-autogrow-textarea-placeholder);
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}
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</style>
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<!-- the mirror sizes the input/textarea so it grows with typing -->
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<!-- use   instead of to allow this element to be used in XHTML -->
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<div id="mirror" class="mirror-text" aria-hidden="true"> </div>
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<!-- size the input/textarea with a div, because the textarea has intrinsic size in ff -->
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<div class="textarea-container fit">
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<textarea id="textarea"
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name$="[[name]]"
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autocomplete$="[[autocomplete]]"
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autofocus$="[[autofocus]]"
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inputmode$="[[inputmode]]"
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placeholder$="[[placeholder]]"
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readonly$="[[readonly]]"
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required$="[[required]]"
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disabled$="[[disabled]]"
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rows$="[[rows]]"
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maxlength$="[[maxlength]]"></textarea>
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</div>
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</template>
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</dom-module>
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<script>
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Polymer({
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is: 'iron-autogrow-textarea',
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behaviors: [
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Polymer.IronFormElementBehavior,
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Polymer.IronValidatableBehavior,
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Polymer.IronControlState
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],
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properties: {
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/**
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* Use this property instead of `value` for two-way data binding.
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* This property will be deprecated in the future. Use `value` instead.
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* @type {string|number}
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*/
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bindValue: {
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observer: '_bindValueChanged',
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type: String
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},
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/**
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* The initial number of rows.
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*
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* @attribute rows
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* @type number
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* @default 1
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*/
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rows: {
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type: Number,
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value: 1,
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observer: '_updateCached'
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},
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/**
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* The maximum number of rows this element can grow to until it
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* scrolls. 0 means no maximum.
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*
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* @attribute maxRows
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* @type number
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* @default 0
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*/
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maxRows: {
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type: Number,
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value: 0,
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observer: '_updateCached'
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},
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/**
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* Bound to the textarea's `autocomplete` attribute.
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*/
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autocomplete: {
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type: String,
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value: 'off'
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},
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/**
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* Bound to the textarea's `autofocus` attribute.
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*/
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autofocus: {
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type: Boolean,
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value: false
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},
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/**
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* Bound to the textarea's `inputmode` attribute.
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*/
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inputmode: {
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type: String
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},
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/**
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* Bound to the textarea's `placeholder` attribute.
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*/
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placeholder: {
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type: String
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},
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/**
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* Bound to the textarea's `readonly` attribute.
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*/
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readonly: {
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type: String
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},
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/**
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* Set to true to mark the textarea as required.
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*/
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required: {
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type: Boolean
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},
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/**
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* The maximum length of the input value.
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*/
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maxlength: {
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type: Number
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}
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},
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listeners: {
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'input': '_onInput'
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},
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observers: [
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'_onValueChanged(value)'
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],
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/**
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* Returns the underlying textarea.
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* @type HTMLTextAreaElement
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*/
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get textarea() {
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return this.$.textarea;
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},
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/**
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* Returns textarea's selection start.
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* @type Number
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*/
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get selectionStart() {
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return this.$.textarea.selectionStart;
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},
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/**
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* Returns textarea's selection end.
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* @type Number
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*/
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get selectionEnd() {
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return this.$.textarea.selectionEnd;
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},
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/**
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* Sets the textarea's selection start.
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*/
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set selectionStart(value) {
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this.$.textarea.selectionStart = value;
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},
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/**
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* Sets the textarea's selection end.
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*/
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set selectionEnd(value) {
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this.$.textarea.selectionEnd = value;
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},
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/**
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* Returns true if `value` is valid. The validator provided in `validator`
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* will be used first, if it exists; otherwise, the `textarea`'s validity
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* is used.
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* @return {boolean} True if the value is valid.
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*/
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validate: function() {
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// Empty, non-required input is valid.
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if (!this.required && this.value == '') {
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this.invalid = false;
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return true;
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}
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var valid;
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if (this.hasValidator()) {
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valid = Polymer.IronValidatableBehavior.validate.call(this, this.value);
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} else {
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valid = this.$.textarea.validity.valid;
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this.invalid = !valid;
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}
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this.fire('iron-input-validate');
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return valid;
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},
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_bindValueChanged: function() {
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var textarea = this.textarea;
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if (!textarea) {
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return;
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}
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// If the bindValue changed manually, then we need to also update
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// the underlying textarea's value. Otherwise this change was probably
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// generated from the _onInput handler, and the two values are already
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// the same.
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if (textarea.value !== this.bindValue) {
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textarea.value = !(this.bindValue || this.bindValue === 0) ? '' : this.bindValue;
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}
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this.value = this.bindValue;
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this.$.mirror.innerHTML = this._valueForMirror();
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// manually notify because we don't want to notify until after setting value
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this.fire('bind-value-changed', {value: this.bindValue});
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},
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_onInput: function(event) {
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this.bindValue = event.path ? event.path[0].value : event.target.value;
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},
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_constrain: function(tokens) {
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var _tokens;
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tokens = tokens || [''];
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// Enforce the min and max heights for a multiline input to avoid measurement
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if (this.maxRows > 0 && tokens.length > this.maxRows) {
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_tokens = tokens.slice(0, this.maxRows);
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} else {
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_tokens = tokens.slice(0);
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}
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while (this.rows > 0 && _tokens.length < this.rows) {
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_tokens.push('');
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}
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// Use   instead of to allow this element to be used in XHTML.
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return _tokens.join('<br/>') + ' ';
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},
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_valueForMirror: function() {
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var input = this.textarea;
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if (!input) {
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return;
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}
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this.tokens = (input && input.value) ? input.value.replace(/&/gm, '&').replace(/"/gm, '"').replace(/'/gm, ''').replace(/</gm, '<').replace(/>/gm, '>').split('\n') : [''];
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return this._constrain(this.tokens);
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},
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_updateCached: function() {
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this.$.mirror.innerHTML = this._constrain(this.tokens);
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},
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_onValueChanged: function() {
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this.bindValue = this.value;
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}
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});
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</script>
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