circles-page.html
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<!--
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-flex-layout/iron-flex-layout.html">
<link rel="import" href="../../neon-shared-element-animatable-behavior.html">
<dom-module id="circles-page">
<template>
<style>
:host {
@apply(--layout-horizontal);
@apply(--layout-center-center);
}
.circle {
display: inline-block;
box-sizing: border-box;
width: 100px;
height: 100px;
margin: 16px;
border-radius: 50%;
background: var(--color-one);
}
</style>
<div>
<div class="circle"></div>
<div class="circle"></div>
<div class="circle"></div>
<div class="circle"></div>
</div>
</template>
</dom-module>
<script>
Polymer({
is: 'circles-page',
behaviors: [
Polymer.NeonSharedElementAnimatableBehavior
],
properties: {
animationConfig: {
value: function() {
var circles = Polymer.dom(this.root).querySelectorAll('.circle');
var circlesArray = Array.prototype.slice.call(circles);
return {
'entry': [{
name: 'cascaded-animation',
animation: 'scale-up-animation',
nodes: circlesArray
}],
'exit': [{
name: 'hero-animation',
id: 'hero',
fromPage: this
}, {
name: 'cascaded-animation',
animation: 'scale-down-animation'
}]
};
}
}
},
listeners: {
'click': '_onClick'
},
_onClick: function(event) {
var target = event.target;
if (target.classList.contains('circle')) {
// configure the page animation
this.sharedElements = {
'hero': target
};
var nodesToScale = [];
var circles = Polymer.dom(this.root).querySelectorAll('.circle');
for (var node, index = 0; node = circles[index]; index++) {
if (node !== event.target) {
nodesToScale.push(node);
}
}
this.animationConfig['exit'][1].nodes = nodesToScale;
this.fire('circle-click');
}
}
});
</script>