1<!-- 2@license 3Copyright (c) 2015 The Polymer Project Authors. All rights reserved. 4This code may only be used under the BSD style license found at http://polymer.github.io/LICENSE.txt 5The complete set of authors may be found at http://polymer.github.io/AUTHORS.txt 6The complete set of contributors may be found at http://polymer.github.io/CONTRIBUTORS.txt 7Code distributed by Google as part of the polymer project is also 8subject to an additional IP rights grant found at http://polymer.github.io/PATENTS.txt 9--> 10 11<link rel="import" href="../../polymer/polymer.html"> 12<link rel="import" href="../neon-animation-behavior.html"> 13<link rel="import" href="../web-animations.html"> 14 15<!-- 16`<slide-down-animation>` animates the transform of an element from `none` `translateY(100%)`. 17The `transformOrigin` defaults to `50% 0`. 18 19Configuration: 20``` 21{ 22 name: 'slide-down-animation', 23 node: <node>, 24 transformOrigin: <transform-origin>, 25 timing: <animation-timing> 26} 27``` 28--> 29 30<script> 31 32 Polymer({ 33 34 is: 'slide-down-animation', 35 36 behaviors: [ 37 Polymer.NeonAnimationBehavior 38 ], 39 40 configure: function(config) { 41 var node = config.node; 42 43 this._effect = new KeyframeEffect(node, [ 44 {'transform': 'translateY(0%)'}, 45 {'transform': 'translateY(100%)'} 46 ], this.timingFromConfig(config)); 47 48 if (config.transformOrigin) { 49 this.setPrefixedProperty(node, 'transformOrigin', config.transformOrigin); 50 } else { 51 this.setPrefixedProperty(node, 'transformOrigin', '50% 0'); 52 } 53 54 return this._effect; 55 } 56 57 }); 58 59</script> 60