VulpesOS/assets/webapps/homescreen.gaiamobile.org/bower_components/gaia-container/script.js

;'use strict';window.GaiaContainer=(function(exports){const STATE_CHANGE_TIMEOUT=100;const DEFAULT_DND_TIMEOUT=300;const DND_THRESHOLD=5;const DND_MOVE_THROTTLE=50;var proto=Object.create(HTMLElement.prototype);proto.createdCallback=function(){this._template=template.content.cloneNode(true);var shadow=this.createShadowRoot();shadow.appendChild(this._template);this._frozen=false;this._pendingStateChanges=[];this._children=[];this._dnd={enabled:false,delay:DEFAULT_DND_TIMEOUT,timeout:null,child:null,active:false,start:{pageX:0,pageY:0,clientX:0,clientY:0},last:{pageX:0,pageY:0,clientX:0,clientY:0,timeStamp:0},moveTimeout:null,lastMoveEventTime:0,clickCapture:false};var dndObserverCallback=(mutations)=>{if(this._dnd.enabled!==this.dragAndDrop){this._dnd.enabled=this.dragAndDrop;if(this._dnd.enabled){this.addEventListener('touchstart',this);this.addEventListener('touchmove',this);this.addEventListener('touchcancel',this);this.addEventListener('touchend',this);this.addEventListener('mousedown',this);this.addEventListener('mousemove',this);this.addEventListener('mouseup',this);this.addEventListener('click',this,true);this.addEventListener('contextmenu',this,true);}else{this.cancelDrag();this.removeEventListener('touchstart',this);this.removeEventListener('touchmove',this);this.removeEventListener('touchcancel',this);this.removeEventListener('touchend',this);this.removeEventListener('mousedown',this);this.removeEventListener('mousemove',this);this.removeEventListener('mouseup',this);this.removeEventListener('click',this,true);this.removeEventListener('contextmenu',this,true);}}};this.dndObserver=new MutationObserver(dndObserverCallback);this.dndObserver.observe(this,{attributes:true,attributeFilter:['drag-and-drop']});dndObserverCallback(null);};Object.defineProperty(proto,'children',{get:function(){return this._children.map((child)=>{return child.element;});},enumerable:true});Object.defineProperty(proto,'firstChild',{get:function(){return this._children.length?this._children[0].element:null;},enumerable:true});Object.defineProperty(proto,'lastChild',{get:function(){var length=this._children.length;return length?this._children[length-1].element:null;},enumerable:true});Object.defineProperty(proto,'dragAndDrop',{get:function(){return this.getAttribute('drag-and-drop')!==null;},enumerable:true});Object.defineProperty(proto,'dragAndDropTimeout',{get:function(){return this._dnd.delay;},set:function(timeout){if(timeout>=0){this._dnd.delay=timeout;}else{this._dnd.delay=DEFAULT_DND_TIMEOUT;}},enumerable:true});proto.realAppendChild=proto.appendChild;proto.appendChild=function(element,callback){this.insertBefore(element,null,callback);};proto.realRemoveChild=proto.removeChild;proto.removeChild=function(element,callback){var children=this._children;var childToRemove=null;for(var child of children){if(child.element===element){childToRemove=child;break;}}
if(childToRemove===null){throw'removeChild called on unknown child';}
this.changeState(childToRemove,'removed',()=>{this.realRemoveChild(childToRemove.container);this.realRemoveChild(childToRemove.master);for(var i=0,iLen=children.length;i<iLen;i++){if(children[i]===childToRemove){children.splice(i,1);break;}}
if(callback){callback();}
this.synchronise();});};proto.realReplaceChild=proto.replaceChild;proto.replaceChild=function(newElement,oldElement,callback){if(!newElement||!oldElement){throw'replaceChild called with null arguments';}
if(newElement.parentNode){newElement.parentNode.removeChild(newElement,()=>{this.replaceChild(newElement,oldElement,callback);});if(newElement.parentNode){return;}}
var children=this._children;for(var i=0,iLen=children.length;i<iLen;i++){var oldChild=children[i];if(oldChild.element===oldElement){var newChild=new GaiaContainerChild(newElement);this.realInsertBefore(newChild.container,oldChild.container);this.realInsertBefore(newChild.master,oldChild.master);this.realRemoveChild(oldChild.container);this.realRemoveChild(oldChild.master);this.children.splice(i,1,newChild);this.synchronise();if(callback){callback();}
return;}}
throw'removeChild called on unknown child';};proto.reorderChild=function(element,referenceElement,callback){if(!element){throw'reorderChild called with null element';}
var children=this._children;var child=null;var childIndex=null;var referenceChild=null;var referenceChildIndex=null;for(var i=0,iLen=children.length;i<iLen;i++){if(children[i].element===element){child=children[i];childIndex=i;}else if(children[i].element===referenceElement){referenceChild=children[i];referenceChildIndex=i;}
if(child&&(referenceChild||!referenceElement)){this.realRemoveChild(child.container);this.realRemoveChild(child.master);children.splice(childIndex,1);if(referenceChild){this.realInsertBefore(child.container,referenceChild.container);this.realInsertBefore(child.master,referenceChild.master);}else{(children.length===0)?this.realAppendChild(child.container):this.realInsertBefore(child.container,children[0].master);this.realAppendChild(child.master);}
referenceChild?children.splice(referenceChildIndex-(childIndex<referenceChildIndex)?1:0,0,child):children.splice(children.length,0,child);this.synchronise();if(callback){callback();}
return;}}
throw child?'reorderChild called on unknown reference element':'reorderChild called on unknown child';};proto.realInsertBefore=proto.insertBefore;proto.insertBefore=function(element,reference,callback){var children=this._children;var childToInsert=new GaiaContainerChild(element);var referenceIndex=-1;if(reference!==null){for(var i=0,iLen=children.length;i<iLen;i++){if(children[i].element===reference){referenceIndex=i;break;}}
if(referenceIndex===-1){throw'insertBefore called on unknown child';}}
if(referenceIndex===-1){(children.length===0)?this.realAppendChild(childToInsert.container):this.realInsertBefore(childToInsert.container,children[0].master);this.realAppendChild(childToInsert.master);children.push(childToInsert);}else{this.realInsertBefore(childToInsert.container,children[referenceIndex].container);this.realInsertBefore(childToInsert.master,children[referenceIndex].master);children.splice(referenceIndex,0,childToInsert);}
this.changeState(childToInsert,'added',callback);this.synchronise();};proto.changeState=function(child,state,callback){if(child.container.parentNode!==this){return;}
if(child.container.classList.contains(state)){return;}
if(this._frozen){this._pendingStateChanges.push(this.changeState.bind(this,child,state,callback));return;}
var animStart=(e)=>{if(!e.animationName.endsWith(state)){return;}
child.container.removeEventListener('animationstart',animStart);window.clearTimeout(child[state]);delete child[state];var self=this;child.container.addEventListener('animationend',function animEnd(){child.container.removeEventListener('animationend',animEnd);child.container.classList.remove(state);if(callback){callback();}});};child.container.addEventListener('animationstart',animStart);child.container.classList.add(state);child[state]=window.setTimeout(()=>{delete child[state];child.container.removeEventListener('animationstart',animStart);child.container.classList.remove(state);if(callback){callback();}},STATE_CHANGE_TIMEOUT);};proto.getChildOffsetRect=function(element){var children=this._children;for(var i=0,iLen=children.length;i<iLen;i++){var child=children[i];if(child.element===element){var top=child._lastMasterTop;var left=child._lastMasterLeft;var width=child._lastElementWidth;var height=child._lastElementHeight;return{top:top,left:left,width:width,height:height,right:left+width,bottom:top+height};}}
throw'getChildOffsetRect called on unknown child';};proto.getChildFromPoint=function(x,y){var children=this._children;for(var parent=this.parentElement;parent;parent=parent.parentElement){x+=parent.scrollLeft-parent.offsetLeft;y+=parent.scrollTop-parent.offsetTop;}
for(var i=0,iLen=children.length;i<iLen;i++){var child=children[i];if(x>=child._lastMasterLeft&&y>=child._lastMasterTop&&x<child._lastMasterLeft+child._lastElementWidth&&y<child._lastMasterTop+child._lastElementHeight){return child.element;}}
return null;};proto.cancelDrag=function(){if(this._dnd.timeout!==null){clearTimeout(this._dnd.timeout);this._dnd.timeout=null;}
if(this._dnd.moveTimeout!==null){clearTimeout(this._dnd.moveTimeout);this._dnd.moveTimeout=null;}
if(this._dnd.active){this._dnd.child.container.classList.remove('dragging');this._dnd.child.container.style.position='absolute';this._dnd.child.container.style.top='0';this._dnd.child.container.style.left='0';this._dnd.child.markDirty();this._dnd.child=null;this._dnd.active=false;this.synchronise();this._dnd.clickCapture=true;this.dispatchEvent(new CustomEvent('drag-finish'));}};proto.startDrag=function(){if(!this.dispatchEvent(new CustomEvent('drag-start',{cancelable:true,detail:{target:this._dnd.child.element,pageX:this._dnd.start.pageX,pageY:this._dnd.start.pageY,clientX:this._dnd.start.clientX,clientY:this._dnd.start.clientY}}))){return;}
this._dnd.active=true;this._dnd.child.container.classList.add('dragging');this._dnd.child.container.style.position='fixed';var rect=this.getBoundingClientRect();this._dnd.child.container.style.top=rect.top+'px';this._dnd.child.container.style.left=rect.left+'px';};proto.continueDrag=function(){if(!this._dnd.active){return;}
var left=this._dnd.child.master.offsetLeft+
(this._dnd.last.pageX-this._dnd.start.pageX);var top=this._dnd.child.master.offsetTop+
(this._dnd.last.pageY-this._dnd.start.pageY);this._dnd.child.container.style.transform='translate('+left+'px, '+top+'px)';if(this._dnd.moveTimeout===null){var delay=Math.max(0,DND_MOVE_THROTTLE-
(this._dnd.last.timeStamp-this._dnd.lastMoveEventTime));this._dnd.moveTimeout=setTimeout(()=>{this._dnd.moveTimeout=null;this._dnd.lastMoveEventTime=this._dnd.last.timeStamp;this.dispatchEvent(new CustomEvent('drag-move',{detail:{target:this._dnd.child.element,pageX:this._dnd.last.pageX,pageY:this._dnd.last.pageY,clientX:this._dnd.last.clientX,clientY:this._dnd.last.clientY}}));},delay);}};proto.endDrag=function(event){if(this._dnd.active){var dropTarget=this.getChildFromPoint(this._dnd.last.clientX,this._dnd.last.clientY);if(this.dispatchEvent(new CustomEvent('drag-end',{cancelable:true,detail:{target:this._dnd.child.element,dropTarget:dropTarget,pageX:this._dnd.last.pageX,pageY:this._dnd.last.pageY,clientX:this._dnd.last.clientX,clientY:this._dnd.last.clientY}}))){var children=this._children;if(dropTarget&&dropTarget!==this._dnd.child.element){var dropChild=null;var dropIndex=-1;var childIndex=-1;var insertBefore=true;for(var i=0,iLen=children.length;i<iLen;i++){if(children[i]===this._dnd.child){childIndex=i;if(!dropChild){insertBefore=false;}}
if(children[i].element===dropTarget){dropChild=children[i];dropIndex=i;}
if(dropIndex>=0&&childIndex>=0){break;}}
if(dropIndex>=0&&childIndex>=0){this.realRemoveChild(this._dnd.child.container);this.realRemoveChild(this._dnd.child.master);this.realInsertBefore(this._dnd.child.container,insertBefore?dropChild.container:dropChild.container.nextSibling);this.realInsertBefore(this._dnd.child.master,insertBefore?dropChild.master:dropChild.master.nextSibling);children.splice(dropIndex,0,children.splice(childIndex,1)[0]);this.dispatchEvent(new CustomEvent('drag-rearrange'));}}}}else if(this._dnd.timeout!==null){var handled=!this.dispatchEvent(new CustomEvent('activate',{cancelable:true,detail:{target:this._dnd.child.element}}));if(handled){event.stopImmediatePropagation();event.preventDefault();}}
this.cancelDrag();};proto.handleEvent=function(event){switch(event.type){case'touchstart':case'mousedown':if(this._dnd.active||this._dnd.timeout){this.cancelDrag();break;}
if(event instanceof MouseEvent){this._dnd.start.pageX=event.pageX;this._dnd.start.pageY=event.pageY;this._dnd.start.clientX=event.pageX;this._dnd.start.clientY=event.pageY;}else{this._dnd.start.pageX=event.touches[0].pageX;this._dnd.start.pageY=event.touches[0].pageY;this._dnd.start.clientX=event.touches[0].clientX;this._dnd.start.clientY=event.touches[0].clientY;}
this._dnd.last.pageX=this._dnd.start.pageX;this._dnd.last.pageY=this._dnd.start.pageY;this._dnd.last.clientX=this._dnd.start.clientX;this._dnd.last.clientY=this._dnd.start.clientY;this._dnd.last.timeStamp=event.timeStamp;var target=event.target;for(;target.parentNode!==this;target=target.parentNode){if(target===this||!target.parentNode){return;}}
var children=this._children;for(var child of children){if(child.container===target){this._dnd.child=child;break;}}
if(!this._dnd.child){return;}
if(this._dnd.delay>0){this._dnd.timeout=setTimeout(()=>{this._dnd.timeout=null;this.startDrag();},this._dnd.delay);}else{this.startDrag();}
break;case'touchmove':case'mousemove':var pageX,pageY,clientX,clientY;if(event instanceof MouseEvent){pageX=event.pageX;pageY=event.pageY;clientX=event.clientX;clientY=event.clientY;}else{pageX=event.touches[0].pageX;pageY=event.touches[0].pageY;clientX=event.touches[0].clientX;clientY=event.touches[0].clientY;}
if(this._dnd.timeout){if(Math.abs(pageX-this._dnd.start.pageX)>DND_THRESHOLD||Math.abs(pageY-this._dnd.start.pageY)>DND_THRESHOLD){clearTimeout(this._dnd.timeout);this._dnd.timeout=null;}}else if(this._dnd.active){event.preventDefault();this._dnd.last.pageX=pageX;this._dnd.last.pageY=pageY;this._dnd.last.clientX=clientX;this._dnd.last.clientY=clientY;this._dnd.last.timeStamp=event.timeStamp;this.continueDrag();}
break;case'touchcancel':this.cancelDrag();break;case'touchend':case'mouseup':if(this._dnd.active){event.preventDefault();event.stopImmediatePropagation();}
this.endDrag(event);break;case'click':if(this._dnd.clickCapture){this._dnd.clickCapture=false;event.preventDefault();event.stopImmediatePropagation();}
break;case'contextmenu':if(this._dnd.active||this._dnd.timeout){event.stopImmediatePropagation();event.preventDefault();}
break;}};proto.freeze=function(){this._frozen=true;};proto.thaw=function(){if(this._frozen){this._frozen=false;for(var callback of this._pendingStateChanges){callback();}
this._pendingStateChanges=[];this.synchronise();}};proto.synchronise=function(){if(this._frozen){return;}
var child;for(child of this._children){if(!this._dnd.active||child!==this._dnd.child){child.synchroniseMaster();}}
for(child of this._children){if(!this._dnd.active||child!==this._dnd.child){child.synchroniseContainer();}}};var template=document.createElement('template');template.innerHTML=`<style> :host { position: relative; display: block; }</style>`+`<content select='*'></content>`;function GaiaContainerChild(element){this._element=element;this.markDirty();}
GaiaContainerChild.prototype={get element(){return this._element;},get container(){if(!this._container){var container=document.createElement('div');container.classList.add('gaia-container-child');container.style.position='absolute';container.style.top='0';container.style.left='0';container.appendChild(this.element);this._container=container;}
return this._container;},get master(){if(!this._master){var master=document.createElement('div');master.style.visibility='hidden';this._master=master;}
return this._master;},markDirty(){this._lastElementWidth=null;this._lastElementHeight=null;this._lastElementDisplay=null;this._lastElementOrder=null;this._lastMasterTop=null;this._lastMasterLeft=null;},synchroniseMaster(){var master=this.master;var element=this.element;var style=window.getComputedStyle(element);var display=style.display;var order=style.order;var width=element.offsetWidth;var height=element.offsetHeight;if(this._lastElementWidth!==width||this._lastElementHeight!==height||this._lastElementDisplay!==display||this._lastElementOrder!==order){this._lastElementWidth=width;this._lastElementHeight=height;this._lastElementDisplay=display;this._lastElementOrder=order;master.style.width=width+'px';master.style.height=height+'px';master.style.display=display;master.style.order=order;}},synchroniseContainer(){var master=this.master;var container=this.container;var top=master.offsetTop;var left=master.offsetLeft;if(this._lastMasterTop!==top||this._lastMasterLeft!==left){this._lastMasterTop=top;this._lastMasterLeft=left;container.style.transform='translate('+left+'px, '+top+'px)';}}};exports.GaiaContainerChild=GaiaContainerChild;return document.registerElement('gaia-container',{prototype:proto});})(window);