define(["browser","dom","layoutManager","css!./viewcontainer-lite"],function(browser,dom,layoutManager){"use strict";function enableAnimation(){return!browser.tv&&browser.supportsCssAnimation()}function findLastView(parent,className){for(var nodes=parent.childNodes,i=nodes.length-1;i>=0;i--){var node=nodes[i],classList=node.classList;if(classList&&classList.contains(className))return node}}function findViewBefore(elem,className){for(var node=elem.previousSibling;node;){var classList=node.classList;if(classList&&classList.contains(className))return node;node=node.previousSibling}}function loadView(options){if(!options.cancel){cancelActiveAnimations();var selected=selectedPageIndex,previousAnimatable=selected===-1?null:allPages[selected],pageIndex=selected+1;pageIndex>=pageContainerCount&&(pageIndex=0);var viewHtml=options.view,properties=[];options.fullscreen&&properties.push("fullscreen");var view,currentPage=allPages[pageIndex];return currentPage?(triggerDestroy(currentPage),currentPage.insertAdjacentHTML("beforebegin",viewHtml),view=findViewBefore(currentPage,"view"),mainAnimatedPages.removeChild(currentPage)):(mainAnimatedPages.insertAdjacentHTML("beforeend",viewHtml),view=findLastView(mainAnimatedPages,"view")),view.classList.add("mainAnimatedPage"),properties.length&&view.setAttribute("data-properties",properties.join(",")),options.type&&view.setAttribute("data-type",options.type),allPages[pageIndex]=view,onBeforeChange&&onBeforeChange(view,!1,options),beforeAnimate(allPages,pageIndex,selected),animate(view,previousAnimatable,options.transition,options.isBack).then(function(){return selectedPageIndex=pageIndex,currentUrls[pageIndex]=options.url,!options.cancel&&previousAnimatable&&afterAnimate(allPages,pageIndex),view})}}function beforeAnimate(allPages,newPageIndex,oldPageIndex){for(var i=0,length=allPages.length;i<length;i++)newPageIndex===i||oldPageIndex===i||allPages[i].classList.add("hide")}function afterAnimate(allPages,newPageIndex){for(var i=0,length=allPages.length;i<length;i++)newPageIndex===i||allPages[i].classList.add("hide")}function animate(newAnimatedPage,oldAnimatedPage,transition,isBack){if(enableAnimation()&&oldAnimatedPage){if("slide"===transition)return slide(newAnimatedPage,oldAnimatedPage,transition,isBack);if("fade"===transition)return fade(newAnimatedPage,oldAnimatedPage,transition,isBack);clearAnimation(newAnimatedPage),oldAnimatedPage&&clearAnimation(oldAnimatedPage)}return Promise.resolve()}function clearAnimation(elem){setAnimation(elem,"none")}function slide(newAnimatedPage,oldAnimatedPage,transition,isBack){return new Promise(function(resolve,reject){var duration=layoutManager.tv?450:160,animations=[];oldAnimatedPage&&(isBack?setAnimation(oldAnimatedPage,"view-slideright-r "+duration+"ms ease-out normal both"):setAnimation(oldAnimatedPage,"view-slideleft-r "+duration+"ms ease-out normal both"),animations.push(oldAnimatedPage)),isBack?setAnimation(newAnimatedPage,"view-slideright "+duration+"ms ease-out normal both"):setAnimation(newAnimatedPage,"view-slideleft "+duration+"ms ease-out normal both"),animations.push(newAnimatedPage),currentAnimations=animations;var onAnimationComplete=function(){dom.removeEventListener(newAnimatedPage,dom.whichAnimationEvent(),onAnimationComplete,{once:!0}),resolve()};dom.addEventListener(newAnimatedPage,dom.whichAnimationEvent(),onAnimationComplete,{once:!0})})}function fade(newAnimatedPage,oldAnimatedPage,transition,isBack){return new Promise(function(resolve,reject){var duration=layoutManager.tv?450:270,animations=[];newAnimatedPage.style.opacity=0,setAnimation(newAnimatedPage,"view-fadein "+duration+"ms ease-in normal both"),animations.push(newAnimatedPage),oldAnimatedPage&&(setAnimation(oldAnimatedPage,"view-fadeout "+duration+"ms ease-out normal both"),animations.push(oldAnimatedPage)),currentAnimations=animations;var onAnimationComplete=function(){dom.removeEventListener(newAnimatedPage,dom.whichAnimationEvent(),onAnimationComplete,{once:!0}),resolve()};dom.addEventListener(newAnimatedPage,dom.whichAnimationEvent(),onAnimationComplete,{once:!0})})}function setAnimation(elem,value){requestAnimationFrame(function(){elem.style.animation=value})}function cancelActiveAnimations(){for(var animations=currentAnimations,i=0,length=animations.length;i<length;i++)animations[i].style.animation="none"}function setOnBeforeChange(fn){onBeforeChange=fn}function tryRestoreView(options){var url=options.url,index=currentUrls.indexOf(url);if(index!==-1){var animatable=allPages[index],view=animatable;if(view){if(options.cancel)return;cancelActiveAnimations();var selected=selectedPageIndex,previousAnimatable=selected===-1?null:allPages[selected];return onBeforeChange&&onBeforeChange(view,!0,options),beforeAnimate(allPages,index,selected),animatable.classList.remove("hide"),animate(animatable,previousAnimatable,options.transition,options.isBack).then(function(){return selectedPageIndex=index,!options.cancel&&previousAnimatable&&afterAnimate(allPages,index),view})}}return Promise.reject()}function triggerDestroy(view){view.dispatchEvent(new CustomEvent("viewdestroy",{cancelable:!1}))}function reset(){allPages=[],currentUrls=[],mainAnimatedPages.innerHTML="",selectedPageIndex=-1}var onBeforeChange,mainAnimatedPages=document.querySelector(".mainAnimatedPages"),allPages=[],currentUrls=[],pageContainerCount=3,selectedPageIndex=-1,currentAnimations=[];return{loadView:loadView,tryRestoreView:tryRestoreView,reset:reset,setOnBeforeChange:setOnBeforeChange}});