document.write('<script src="../js/datalayer_service.js"></script>');
var datalayerTreeObjList = null;
function createDatalayerTree(data){
	//Y 属性定义 checkbox 被勾选后的情况； 
	//N 属性定义 checkbox 取消勾选后的情况； 
	//"p" 表示操作会影响父级节点； 
	//"s" 表示操作会影响子级节点。
	var setting = {
		check : {
			enable : true,
			chkboxType : { "Y" : "s", "N" : "s" }
		},
		data : {
			simpleData : {
				enable : true
			}
		},
		callback : {
		    onCheck : zTreeOnCheck_class,
		},
		view : {
			showIcon : showIconForTree
		}
	};
	var treeListArray = [
		{"id":"0","pId":"","name":"专题数据图层","nocheck":true, icon:"../images/treeicon/subject.png"},
	];
	for (var i = 0; i < data.length; i++) {
		var j = {};
		j.id = data[i].layerId;
		j.name = data[i].layerName;
		j.pId = "0";
		j.layerType = data[i].layerType;
		j.layerPath = data[i].layerPath;
		j.layerAlpha = data[i].layerPid;
		treeListArray.push(j);
	}
	datalayerTreeObjList = $.fn.zTree.init($("#dataLayerTree"), setting, treeListArray);
	datalayerTreeObjList.expandAll(true);
	//父节点显示图标
	function showIconForTree(treeId, treeNode) {
		return treeNode.isParent == true;
	}
	function zTreeOnCheck_class(event, treeId, treeNode) {
		var changedNodes = datalayerTreeObjList.getChangeCheckedNodes();
		for ( var i=0 ; i < changedNodes.length ; i++ ){
			if(changedNodes[i].checked){
				adddatalayer(changedNodes[i]);
			}else{
				removedatalayer(changedNodes[i]);
			}
		}
		clearCheckedOldNodes();
	}
	function clearCheckedOldNodes(){
		var nodes = datalayerTreeObjList.getChangeCheckedNodes();
		for (var i = 0; i < nodes.length; i++) {
			nodes[i].checkedOld = nodes[i].checked;
		}
	}
}
var imageryArr = [];
var kmllayerArr = [];
function adddatalayer(node){
	if(node.layerType=="瓦片"){
		var layerProvider = new Cesium.TileMapServiceImageryProvider({
		    url : Cesium.buildModuleUrl(serverIP + node.layerPath)
		});
		var datalayer = new Cesium.ImageryLayer(layerProvider, {alpha : Number(node.layerAlpha)});
		viewer.imageryLayers.add(datalayer);
		var datalayerObj = {"id":node.id,"img":datalayer};
		imageryArr.push(datalayerObj);
		sliderLayer = datalayer;
	}else if(node.layerType=="arcgis"){
		var arcgislayerProvider = new Cesium.ArcGisMapServerImageryProvider({
		    url : Cesium.buildModuleUrl(node.layerPath)
		});
		var datalayer = new Cesium.ImageryLayer(arcgislayerProvider, {alpha : Number(node.layerAlpha)});
		viewer.imageryLayers.add(datalayer);
		var datalayerObj = {"id":node.id,"img":datalayer};
		imageryArr.push(datalayerObj);
		sliderLayer = datalayer;
	}else{
		var kmllayer = Cesium.KmlDataSource.load(node.layerPath,{clampToGround:true});
		kmllayer.then(function(dataSource) {
			viewer.dataSources.add(dataSource);
			var kmlobj = {"id":node.id,"kml":dataSource};
			kmllayerArr.push(kmlobj);
		});
	}
}
function removedatalayer(node){
	if(node.layerType=="瓦片"||node.layerType=="arcgis"){
		for (var i = 0; i < imageryArr.length; i++) {
			if(imageryArr[i].id == node.id){
				viewer.imageryLayers.remove(imageryArr[i].img);
			}
		}
	}else{
		for (var i = 0; i < kmllayerArr.length; i++) {
			if(kmllayerArr[i].id == node.id){
				viewer.dataSources.remove(kmllayerArr[i].kml,true);
			}
		}
	}
	sliderLayer = undefined;
}
function cleardatalayer(){
	for (var i = 0; i < imageryArr.length; i++) {
		viewer.imageryLayers.remove(imageryArr[i].img);
	}
	for (var i = 0; i < kmllayerArr.length; i++) {
		viewer.dataSources.remove(kmllayerArr[i].kml,true);
	}
	imageryArr = [];
	kmllayerArr = [];
}
var sliderhandler;
var sliderLayer;
function startSlider(){
	if(sliderLayer){
		$("#slider").show();
		sliderLayer.splitDirection = Cesium.ImagerySplitDirection.LEFT;
		var slider = document.getElementById('slider');
		viewer.scene.imagerySplitPosition = (slider.offsetLeft) / slider.parentElement.offsetWidth;
		
		sliderhandler = sliderhandler && sliderhandler.destroy();
		sliderhandler = new Cesium.ScreenSpaceEventHandler(slider);
		var moveActive = false;
		function move(movement) {
			if(!moveActive) {
				return;
			}
			var relativeOffset = movement.endPosition.x;
			var splitPosition = (slider.offsetLeft + relativeOffset) / slider.parentElement.offsetWidth;
			slider.style.left = 100.0 * splitPosition + '%';
			viewer.scene.imagerySplitPosition = splitPosition;
		}

		sliderhandler.setInputAction(function() {
			moveActive = true;
		}, Cesium.ScreenSpaceEventType.LEFT_DOWN);
		sliderhandler.setInputAction(function() {
			moveActive = true;
		}, Cesium.ScreenSpaceEventType.PINCH_START);

		sliderhandler.setInputAction(move, Cesium.ScreenSpaceEventType.MOUSE_MOVE);
		sliderhandler.setInputAction(move, Cesium.ScreenSpaceEventType.PINCH_MOVE);

		sliderhandler.setInputAction(function() {
			moveActive = false;
		}, Cesium.ScreenSpaceEventType.LEFT_UP);
		sliderhandler.setInputAction(function() {
			moveActive = false;
		}, Cesium.ScreenSpaceEventType.PINCH_END);
	}else{
		swal("请先选择图层，目前只有瓦片图层才能有卷帘分析效果!","请重试！","error");
		ctrlSlider();
	}
}
function stopSlider(){
	$("#slider").hide();
	sliderhandler = sliderhandler && sliderhandler.destroy();
	viewer.scene.imagerySplitPosition = 1;
}