1/**
2 * @license
3 * Copyright (c) 2014 The Polymer Project Authors. All rights reserved.
4 * This code may only be used under the BSD style license found at http://polymer.github.io/LICENSE.txt
5 * The complete set of authors may be found at http://polymer.github.io/AUTHORS.txt
6 * The complete set of contributors may be found at http://polymer.github.io/CONTRIBUTORS.txt
7 * Code distributed by Google as part of the polymer project is also
8 * subject to an additional IP rights grant found at http://polymer.github.io/PATENTS.txt
9 */
10// @version: 0.3.5
11window.PolymerGestures={},function(a){var b=!1,c=document.createElement("meta");if(c.createShadowRoot){var d=c.createShadowRoot(),e=document.createElement("span");d.appendChild(e),c.addEventListener("testpath",function(a){a.path&&(b=a.path[0]===e),a.stopPropagation()});var f=new CustomEvent("testpath",{bubbles:!0});document.head.appendChild(c),e.dispatchEvent(f),c.parentNode.removeChild(c),d=e=null}c=null;var g={shadow:function(a){return a?a.shadowRoot||a.webkitShadowRoot:void 0},canTarget:function(a){return a&&Boolean(a.elementFromPoint)},targetingShadow:function(a){var b=this.shadow(a);return this.canTarget(b)?b:void 0},olderShadow:function(a){var b=a.olderShadowRoot;if(!b){var c=a.querySelector("shadow");c&&(b=c.olderShadowRoot)}return b},allShadows:function(a){for(var b=[],c=this.shadow(a);c;)b.push(c),c=this.olderShadow(c);return b},searchRoot:function(a,b,c){var d,e;return a?(d=a.elementFromPoint(b,c),d?e=this.targetingShadow(d):a!==document&&(e=this.olderShadow(a)),this.searchRoot(e,b,c)||d):void 0},owner:function(a){if(!a)return document;for(var b=a;b.parentNode;)b=b.parentNode;return b.nodeType!=Node.DOCUMENT_NODE&&b.nodeType!=Node.DOCUMENT_FRAGMENT_NODE&&(b=document),b},findTarget:function(a){if(b&&a.path)return a.path[0];var c=a.clientX,d=a.clientY,e=this.owner(a.target);return e.elementFromPoint(c,d)||(e=document),this.searchRoot(e,c,d)},findTouchAction:function(a){var c;if(b&&a.path){for(var d=a.path,e=0;e<d.length;e++)if(c=d[e],c.nodeType===Node.ELEMENT_NODE&&c.hasAttribute("touch-action"))return c.getAttribute("touch-action")}else for(c=a.target;c;){if(c.hasAttribute("touch-action"))return c.getAttribute("touch-action");c=c.parentNode||c.host}return"auto"},LCA:function(a,b){if(a===b)return a;if(a&&!b)return a;if(b&&!a)return b;if(!b&&!a)return document;if(a.contains&&a.contains(b))return a;if(b.contains&&b.contains(a))return b;var 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e,f=Object.create(null),g=0;g<b.length;g++)e=b[g],f[e]=a[e]||c[g],("target"===e||"relatedTarget"===e)&&d&&f[e]instanceof SVGElementInstance&&(f[e]=f[e].correspondingUseElement);return f.preventDefault=function(){a.preventDefault()},f},dispatchEvent:function(a){var b=a._target;if(b){b.dispatchEvent(a);var c=this.cloneEvent(a);c.target=b,this.fillGestureQueue(c)}},gestureTrigger:function(){for(var a,b=0;b<this.gestureQueue.length;b++){a=this.gestureQueue[b];for(var c,d,e=0;e<this.gestures.length;e++)c=this.gestures[e],d=c[a.type],c.enabled&&d&&d.call(c,a)}this.gestureQueue.length=0},fillGestureQueue:function(a){this.gestureQueue.length||requestAnimationFrame(this.boundGestureTrigger),this.gestureQueue.push(a)}};f.boundHandler=f.eventHandler.bind(f),f.boundGestureTrigger=f.gestureTrigger.bind(f),a.dispatcher=f,a.activateGesture=function(a,b){var c=b.toLowerCase(),d=f.dependencyMap[c];if(d){var e=f.gestures[d.index];if(0===d.listeners&&e&&(e.enabled=!0),d.listeners++,a._pgListeners||(f.register(a),a._pgListeners=0),e){var g,h=e.defaultActions&&e.defaultActions[c];switch(a.nodeType){case Node.ELEMENT_NODE:g=a;break;case Node.DOCUMENT_FRAGMENT_NODE:g=a.host;break;default:g=null}h&&g&&!g.hasAttribute("touch-action")&&g.setAttribute("touch-action",h)}a._pgListeners++}return Boolean(d)},a.addEventListener=function(b,c,d,e){d&&(a.activateGesture(b,c),b.addEventListener(c,d,e))},a.deactivateGesture=function(a,b){var c=b.toLowerCase(),d=f.dependencyMap[c];if(d){if(d.listeners>0&&d.listeners--,0===d.listeners){var e=f.gestures[d.index];e&&(e.enabled=!1)}a._pgListeners>0&&a._pgListeners--,0===a._pgListeners&&f.unregister(a)}return Boolean(d)},a.removeEventListener=function(b,c,d,e){d&&(a.deactivateGesture(b,c),b.removeEventListener(c,d,e))}}(window.PolymerGestures),function(a){var b=a.dispatcher,c=b.pointermap,d=25,e=[0,1,4,2],f=!1;try{f=1===new 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e,f,g=0;g<d.length;g++)e=d[g],f=this.touchToPointer(e),"touchstart"===a.type&&c.set(f.pointerId,f.target),c.has(f.pointerId)&&b.call(this,f),("touchend"===a.type||a._cancel)&&this.cleanUpPointer(f)},shouldScroll:function(b){if(this.firstXY){var c,d=a.targetFinding.findTouchAction(b),e=this.touchActionToScrollType(d);if("none"===e)c=!1;else if("XY"===e)c=!0;else{var f=b.changedTouches[0],g=e,h="Y"===e?"X":"Y",i=Math.abs(f["client"+g]-this.firstXY[g]),j=Math.abs(f["client"+h]-this.firstXY[h]);c=i>=j}return c}},findTouch:function(a,b){for(var c,d=0,e=a.length;e>d&&(c=a[d]);d++)if(c.identifier===b)return!0},vacuumTouches:function(a){var b=a.touches;if(c.pointers()>=b.length){var d=[];c.forEach(function(a,c){if(1!==c&&!this.findTouch(b,c-2)){var 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