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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/shadow.html">
<link rel="import" href="paper-material-shared-styles.html">
<!--
Material design: [Cards](https://www.google.com/design/spec/components/cards.html)
`paper-material` is a container that renders two shadows on top of each other to
create the effect of a lifted piece of paper.
Example:
<paper-material elevation="1">
... content ...
</paper-material>
@group Paper Elements
@demo demo/index.html
-->
<dom-module id="paper-material">
<template>
<style include="paper-material-shared-styles"></style>
<style>
:host([animated]) {
@apply --shadow-transition;
}
:host {
@apply --paper-material;
}
</style>
<slot></slot>
</template>
</dom-module>
<script>
Polymer({
is: 'paper-material',
properties: {
/**
* The z-depth of this element, from 0-5. Setting to 0 will remove the
* shadow, and each increasing number greater than 0 will be "deeper"
* than the last.
*
* @attribute elevation
* @type number
* @default 1
*/
elevation: {
type: Number,
reflectToAttribute: true,
value: 1
},
/**
* Set this to true to animate the shadow when setting a new
* `elevation` value.
*
* @attribute animated
* @type boolean
* @default false
*/
animated: {
type: Boolean,
reflectToAttribute: true,
value: false
}
}
});
</script>
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