Lin_Ye_Fang_Huo/public/widgets/manageLayers/view.js

"use script"; //开发环境建议开启严格模式

//对应widget.js中MyWidget实例化后的对象
var thisWidget;
var layers = [];
var layersObj = {};

//当前页面业务
function initWidgetView(_thisWidget) {
  thisWidget = _thisWidget;

  //右键
  bindRightMenuEvnet();

  //初始化树
  var setting = {
    check: {
      enable: true,
    },
    data: {
      simpleData: {
        enable: true,
      },
    },
    callback: {
      onCheck: treeOverlays_onCheck,
      onRightClick: treeOverlays_OnRightClick,
      onDblClick: treeOverlays_onDblClick,
      onClick: treeOverlays_onClick,
    },

    view: {
      addDiyDom: addOpacityRangeDom,
    },
  };

  var zNodes = [];
  layers = thisWidget.getLayers();
  for (var i = layers.length - 1; i >= 0; i--) {
    var node = _getNodeConfig(layers[i]);
    if (node) {
      zNodes.push(node);
    }
  }
  $.fn.zTree.init($("#treeOverlays"), setting, zNodes);
}

function _getNodeConfig(layer) {
  if (layer == null || !layer.options || layer.options.noLayerManage) {
    return;
  }

  var item = layer.options;

  if (!item.name) {
    console.log("未命名图层不加入图层管理", layer);
    return;
  }

  var node = {
    id: layer.id,
    pId: layer.pid,
    name: layer.name,
    uuid: layer.uuid,
    checked: layer.isAdded && layer.show,
  };

  if (layer.hasEmptyGroup) {
    //空数组
    node.icon = "img/folder.png";
    node.open = item.open == null ? true : item.open;
  } else if (layer.hasChildLayer) {
    //有子节点的数组
    node.icon = "img/layerGroup.png";
    node.open = item.open == null ? true : item.open;
  } else {
    node.icon = "img/layer.png";
    if (layer.parent) {
      node._parentId = layer.parent.uuid;
    }
  }
  //记录图层
  layersObj[node.uuid] = layer;
  return node;
}

function addNode(item) {
  var treeObj = $.fn.zTree.getZTreeObj("treeOverlays");

  var parentNode;
  if (item.pid && item.pid != -1) {
    parentNode = treeObj.getNodeByParam("id", item.pid, null);
  }

  var node = _getNodeConfig(item);
  if (!node) {
    return;
  }
  

  /*

  */ 

  treeObj.addNodes(parentNode, 0, [node], true);

  //更新子节点图层
  if (item.hasChildLayer) {
    item.eachLayer((childLayer) => {
      removeNode(childLayer);
      addNode(childLayer);
    });
  }
}

function removeNode(layer) {
  var treeObj = $.fn.zTree.getZTreeObj("treeOverlays");

  var node = treeObj.getNodeByParam("uuid", layer.uuid, null);
  if (node) {
    treeObj.removeNode(node);
  }
}

function updateNode(layer) {
  var treeObj = $.fn.zTree.getZTreeObj("treeOverlays");

  var node = treeObj.getNodeByParam("uuid", layer.uuid, null);
  var show = layer.isAdded && layer.show;
  if (node) {
    //更新node
    if (node.checked == show) {
      return;
    }

    node.checkedOld = node.checked;
    node.checked = show;

    treeObj.updateNode(node);
  } else {
    addNode(layer, show);
  }
}

//===================================双击定位图层====================================
function treeOverlays_onClick(e, treeId, treeNode, clickFlag) {
  // if (treeNode == null || treeNode.uuid == null) {
  //   return
  // }
  // var layer = layersObj[treeNode.uuid]
  // if (layer) {
  //   thisWidget.checkClickLayer(layer, treeNode.checked)
  // }
}

function treeOverlays_onDblClick(event, treeId, treeNode) {
  if (treeNode == null || treeNode.uuid == null) {
    return;
  }
  var layer = layersObj[treeNode.uuid];
  if (layer == null) {
    return;
  }
  layer.flyTo();
}

//===================================勾选显示隐藏图层====================================
function removeArrayItem(arr, val) {
  for (let i = 0; i < arr.length; i++) {
    if (arr[i] == val) {
      arr.splice(i, 1);
      return true;
    }
  }
  return false;
}

function treeOverlays_onCheck(e, treeId, chktreeNode) {
  var treeObj = $.fn.zTree.getZTreeObj(treeId);
  //获得所有改变check状态的节点
  var changedNodes = treeObj.getChangeCheckedNodes();

  removeArrayItem(changedNodes, chktreeNode);
  changedNodes.push(chktreeNode);

  for (var i = 0; i < changedNodes.length; i++) {
    var treeNode = changedNodes[i];
    treeNode.checkedOld = treeNode.checked;

    if (treeNode.check_Child_State == 1) {
      // 0:无子节点被勾选,  1:部分子节点被勾选,  2:全部子节点被勾选, -1:不存在子节点 或 子节点全部设置为 nocheck = true
      continue;
    }

    var layer = layersObj[treeNode.uuid];
    if (layer == null) {
      continue;
    }

    //显示隐藏透明度设置view
    if (treeNode.checked) {
      $("#" + treeNode.tId + "_range").show();
    } else {
      $("#" + treeNode.tId + "_range").hide();
    }

    //特殊处理同目录下的单选的互斥的节点，可在config对应图层节点中配置"radio":true即可
    if (layer.options.radio && treeNode.checked) {
      var nodes = treeObj.getNodesByFilter(
        function (node) {
          var item = layersObj[node.uuid];
          return item.options.radio && item.pid == layer.pid && node.uuid != treeNode.uuid;
        },
        false,
        treeNode.getParentNode()
      );
      for (var nidx = 0; nidx < nodes.length; nidx++) {
        nodes[nidx].checkedOld = false;
        treeObj.checkNode(nodes[nidx], false, true);

        $("#" + nodes[nidx].tId + "_range").hide();

        var layertmp = layersObj[nodes[nidx].uuid];
        layertmp.show = false;
      }
    }

    //处理图层显示隐藏
    thisWidget.updateLayerShow(layer, treeNode.checked);
  }

  var layerThis = layersObj[chktreeNode.uuid];
  if (layerThis) {
    thisWidget.checkClickLayer(layerThis, chktreeNode.checked);
  }
}

//===================================透明度设置====================================

//在节点后添加自定义控件
function addOpacityRangeDom(treeId, tNode) {
  //if (tNode.icon == "images/folder.png") return;

  var layer = layersObj[tNode.uuid];
  if (!layer || !layer.hasOpacity) {
    return;
  }

  var view = $("#" + tNode.tId);
  var silder = '<input id="' + tNode.tId + '_range" type="range" style="width: 50px;" />';
  view.append(silder);

  if (!tNode.checked) {
    $("#" + tNode.tId + "_range").hide();
  }

  $("#" + tNode.tId + "_range").range({
    min: 0,
    max: 100,
    step: 1,
    value: (layer.opacity || 1) * 100,
    onChange: function (value) {
      var opacity = value / 100;
      var layer = layersObj[tNode.uuid];
      //设置图层的透明度
      // thisWidget.udpateLayerOpacity(layer, opacity)
      layer.opacity = opacity;
    },
  });
}

//===================================右键菜单====================================
var lastRightClickTreeId;
var lastRightClickTreeNode;

function treeOverlays_OnRightClick(event, treeId, treeNode) {
  if (treeNode == null) {
    return;
  }

  var layer = layersObj[treeNode.uuid];
  if (!layer || !layer.hasZIndex) {
    return;
  }

  //右击时的节点
  lastRightClickTreeId = treeId;
  lastRightClickTreeNode = treeNode;

  var top = event.clientY;
  var left = event.clientX;
  var maxtop = document.body.offsetHeight - 100;
  var maxleft = document.body.offsetWidth - 100;

  if (top > maxtop) {
    top = maxtop;
  }
  if (left > maxleft) {
    left = maxleft;
  }

  $("#content_layer_manager_rMenu")
    .css({
      top: top + "px",
      left: left + "px",
    })
    .show();
  $("body").bind("mousedown", onBodyMouseDown);
}

function onBodyMouseDown(event) {
  if (!(event.target.id == "content_layer_manager_rMenu" || $(event.target).parents("#content_layer_manager_rMenu").length > 0)) {
    hideRMenu();
  }
}

function hideRMenu() {
  $("body").unbind("mousedown", onBodyMouseDown);
  $("#content_layer_manager_rMenu").hide();
}

function bindRightMenuEvnet() {
  $("#content_layer_manager_rMenu li").on("click", function () {
    hideRMenu();

    var type = $(this).attr("data-type");
    moveNodeAndLayer(type);
  });
}

//移动节点及图层位置
function moveNodeAndLayer(type) {
  var treeObj = $.fn.zTree.getZTreeObj(lastRightClickTreeId);

  //获得当前节点的所有同级节点
  var childNodes;
  var parent = lastRightClickTreeNode.getParentNode();
  if (parent == null) {
    childNodes = treeObj.getNodes();
  } else {
    childNodes = parent.children;
  }

  var thisNode = lastRightClickTreeNode;
  var thisLayer = layersObj[thisNode.uuid];

  switch (type) {
    default:
      break;
    case "up": //图层上移一层
      {
        let moveNode = thisNode.getPreNode();
        if (moveNode) {
          treeObj.moveNode(moveNode, thisNode, "prev");
          let moveLayer = layersObj[moveNode.uuid];

          exchangeLayer(thisLayer, moveLayer);
        }
      }
      break;

    case "top": //图层置于顶层
      {
        if (thisNode.getIndex() == 0) {
          return;
        }
        while (thisNode.getIndex() > 0) {
          //冒泡交换
          let moveNode = thisNode.getPreNode();
          if (moveNode) {
            treeObj.moveNode(moveNode, thisNode, "prev");

            let moveLayer = layersObj[moveNode.uuid];
            exchangeLayer(thisLayer, moveLayer);
          }
        }
      }
      break;

    case "down": //图层下移一层
      {
        let moveNode = thisNode.getNextNode();
        if (moveNode) {
          treeObj.moveNode(moveNode, thisNode, "next");

          let moveLayer = layersObj[moveNode.uuid];
          exchangeLayer(thisLayer, moveLayer);
        }
      }
      break;
    case "bottom": //图层置于底层
      {
        if (thisNode.getIndex() == childNodes.length - 1) {
          return;
        }

        while (thisNode.getIndex() < childNodes.length - 1) {
          //冒泡交换
          let moveNode = thisNode.getNextNode();
          if (moveNode) {
            treeObj.moveNode(moveNode, thisNode, "next");

            let moveLayer = layersObj[moveNode.uuid];
            exchangeLayer(thisLayer, moveLayer);
          }
        }
      }
      break;
  }

  //按order重新排序
  layers.sort(function (a, b) {
    return a.zIndex - b.zIndex;
  });
}

/**
 * 交换相邻的图层 ： layer1 待移动图层 ，layer2 移动目标图层
 */
function exchangeLayer(layer1, layer2) {
  if (layer1 == null || layer2 == null) {
    return;
  }
  var or = layer1.zIndex;
  layer1.zIndex = layer2.zIndex; //向上移动
  layer2.zIndex = or; //向下移动

  console.log(`${layer1.name}:${layer1.zIndex},  ${layer2.name}:${layer2.zIndex}`);

  // //向上移动
  // thisWidget.udpateLayerZIndex(layer1, layer1.zIndex)
  // //向下移动
  // thisWidget.udpateLayerZIndex(layer2, layer2.zIndex)
}

//===================================其他====================================

//地图图层添加移除监听，自动勾选
function updateCheckd(name, checked) {
  var treeObj = $.fn.zTree.getZTreeObj("treeOverlays");
  var nodes = treeObj.getNodesByParam("name", name, null);
  if (nodes && nodes.length > 0) {
    treeObj.checkNode(nodes[0], checked, false);
  } else {
    console.log("未在图层树上找到图层“" + name + "”，无法自动勾选处理");
  }
}