<template>
  <div class="dashboard-container">
    <el-button @click="saveActive" icon="el-icon-position" style="margin-right: 20px;float :right">保存</el-button>
    <p>选择节点</p>
    <div class="antvBox">
      <div class="menu-list">
        <div v-for="item in moduleList" :key="item.id"
             draggable="true"
             @dragend="handleDragEnd($event, item)">
          <img :src="item.image" alt="" />
          <p>{{ item.name }}</p>
        </div>
      </div>
      <div class="canvas-card">
        <div id="container" />
      </div>
    </div>
    <el-dialog
      title="提示"
      :visible.sync="dialogVisible"
      width="30%"
      >
      <span>
          <el-radio-group v-model="labelPosition" size="small">
          <el-radio-button label="left">左对齐</el-radio-button>
          <el-radio-button label="right">右对齐</el-radio-button>
          <el-radio-button label="top">顶部对齐</el-radio-button>
        </el-radio-group>
        <div style="margin: 20px;"></div>
        <el-form :label-position="labelPosition" label-width="80px" :model="tableMsg">
          <el-form-item label="任务id">
            <el-input v-model="tableMsg.id" :disabled="true"></el-input>
          </el-form-item>
          <el-form-item label="数据库id">
            <el-input v-model="tableMsg.databaseId" :disabled="true"></el-input>
          </el-form-item>
          <el-form-item label="数据表">
                  <el-cascader
                    v-model="tableMsg.tableName"
                    :options="tables"
                    :props="{ expandTrigger: 'hover',value:'name',label:'name',children:'tableNames' }"
                    @change="handleChange"></el-cascader>
          </el-form-item>
          <el-form-item label="表别名">
            <el-input v-model="tableMsg.tableAsField"></el-input>
          </el-form-item>
        </el-form>
      </span>
      <span slot="footer" class="dialog-footer">
    <el-button @click="dialogVisible = false">取 消</el-button>
    <el-button type="primary" @click="dialogVisible = false">确 定</el-button>
  </span>
    </el-dialog>
  </div>
</template>

<script>
import { Graph } from "@antv/x6";
import {extractDataName} from "../../../api/etl/etl";
export default {
  name: "antvX6",
  data() {
    return {
      tables:{},
      tableMsg:{},
      labelPosition: 'right',
      dialogVisible:false,
      curSelectNode: "",
      moduleList: [
        {
          id: 1,
          name: "表1",
          image: require("@/assets/img/1.png"),
        },
        {
          id: 8,
          name: "表2",
          image: require("@/assets/img/2.png"),
        },
        {
          id: 2,
          name: "联查",
          image: require("@/assets/img/3.png"),
        },
        {
          id: 3,
          name: "节点4",
          image: require("@/assets/img/4.png"),
        },
      ],
      graph: null
    };
  },
  methods: {
    handleChange(value) {
      console.log(value);
    },
    getDatabaseMessage(){
        this.dialogVisible = true
        extractDataName().then(response => {
            this.tables = response.data
        })
    },
    //todo 鼠标划过节点在显示连接桩
    nodeAddEvent() {
      const { graph } = this;
      const container = document.getElementById("container");
      const changePortsVisible = (visible) => {
        const ports = container.querySelectorAll(".x6-port-body");
        for (let i = 0, len = ports.length; i < len; i = i + 1) {
          ports[i].style.visibility = visible ? "visible" : "hidden";
        }
      };
      this.graph.on("node:mouseenter", () => {
        changePortsVisible(true);
      });
      this.graph.on("node:mouseleave", () => {
        changePortsVisible(false);
      });
      this.graph.on("node:dblclick",() =>{
          this.getDatabaseMessage()
      })
      //todo 节点绑定点击事件
      this.graph.on("node:click", ({ e, x, y, node, view }) => {

        // 判断是否有选中过节点
        if (this.curSelectNode) {
          // 移除选中状态
          this.curSelectNode.removeTools();
          // 判断两次选中节点是否相同
          if (this.curSelectNode !== node) {
            node.addTools([
              {
                name: "boundary",
                args: {
                  attrs: {
                    fill: "#16B8AA",
                    stroke: "#2F80EB",
                    strokeWidth: 1,
                    fillOpacity: 0.1,
                  },
                },
              },
              {
                name: "button-remove",
                args: {
                  x: "100%",
                  y: 0,
                  offset: {
                    x: 0,
                    y: 0,
                  },
                },
              },
            ]);
            this.curSelectNode = node;
          } else {
            this.curSelectNode = null;
          }
        } else {
          this.curSelectNode = node;
          node.addTools([
            {
              name: "boundary",
              args: {
                attrs: {
                  fill: "#16B8AA",
                  stroke: "#2F80EB",
                  strokeWidth: 1,
                  fillOpacity: 0.1,
                },
              },
            },
            {
              name: "button-remove",
              args: {
                x: "100%",
                y: 0,
                offset: {
                  x: 0,
                  y: 0,
                },
              },
            },
          ]);
        }
      });

      //todo 连线绑定悬浮事件
      this.graph.on("cell:mouseenter", ({ cell }) => {
        if (cell.shape == "edge") {
          cell.addTools([
            {
              name: "button-remove",
              args: {
                x: "100%",
                y: 0,
                offset: {
                  x: 0,
                  y: 0,
                },
              },
            },
          ]);
          cell.setAttrs({
            line: {
              stroke: "#409EFF",
            },
          });
          cell.zIndex = 99; // 保证当前悬停的线在最上层，不会被遮挡
        }
      });
      this.graph.on("cell:mouseleave", ({ cell }) => {
        if (cell.shape === "edge") {
          cell.removeTools();
          cell.setAttrs({
            line: {
              stroke: "black",
            },
          });
          cell.zIndex = 1; // 保证未悬停的线在下层，不会遮挡悬停的线
        }
      });
    },
    // 拖动后松开鼠标触发事件
    handleDragEnd(e, item) {
      // 可以获取到最后拖动后松开鼠标时的坐标和拖动的节点相关信息
      this.addHandleNode(
        e.pageX - 500,
        e.pageY - 200,
        new Date().getTime(),
        item.image,
        item.name
      );
    },
    initGraph() {
      const container = document.getElementById("container");
      this.graph = new Graph({
        container: container, // 画布容器
        width: container.offsetWidth, // 画布宽
        height: container.offsetHeight, // 画布高
        background: false, // 背景（透明）
        snapline: true, // 对齐线
        // 配置连线规则
        connecting: {
          snap: true, // 自动吸附
          allowBlank: false, // 是否允许连接到画布空白位置的点
          allowMulti: true, // 是否允许在相同的起始节点和终止之间创建多条边
          allowLoop: true, // 是否允许创建循环连线，即边的起始节点和终止节点为同一节点
          highlight: true, // 拖动边时，是否高亮显示所有可用的节点
          highlighting: {
            magnetAdsorbed: {
              name: "stroke",
              args: {
                attrs: {
                  fill: "#5F95FF",
                  stroke: "#5F95FF",
                },
              },
            },
          },
          router: {
            // 对路径添加额外的点
            name: "orth",
          },
          connector: {
            // 边渲染到画布后的样式
            name: "rounded",
            args: {
              radius: 8,
            },
          },
        },
        panning: {
          enabled: false,
        },
        mousewheel: {
          enabled: true, // 支持滚动放大缩小
          zoomAtMousePosition: true,
          modifiers: "ctrl",
          minScale: 0.5,
          maxScale: 3,
        },
        grid: {
          type: "dot",
          size: 20, // 网格大小 10px
          visible: true, // 渲染网格背景
          args: {
            color: "#a0a0a0", // 网格线/点颜色
            thickness: 2, // 网格线宽度/网格点大小
          },
        },
      });
      this.nodeAddEvent()
    },
    //添加节点到画布
    addHandleNode(x, y, id, image, name) {
      this.graph.addNode({
        id: id,
        shape: "image", // 指定使用何种图形，默认值为 'rect'
        x: x,
        y: y,
        width: 60,
        height: 60,
        imageUrl: image,
        attrs: {
          body: {
            stroke: "#ffa940",
            fill: "#ffd591",
          },
          label: {
            textWrap: {
              width: 90,
              text: name,
            },
            fill: "black",
            fontSize: 12,
            refX: 0.5,
            refY: "100%",
            refY2: 4,
            textAnchor: "middle",
            textVerticalAnchor: "top",
          },
        },
        ports: {
          groups: {
            group1: {
              position: [30, 30],
            },
          },
          items: [
            {
              group: "group1",
              id: "port1",
              attrs: {
                circle: {
                  r: 6,
                  magnet: true,
                  stroke: "#ffffff",
                  strokeWidth: 2,
                  fill: "#5F95FF",
                },
              },
            },
          ],
        },
        zIndex: 10,
      });
    },
    //todo 保存画布，并提交
    saveActive() {
      console.log(this.graph.toJSON(), "graph");
      console.log(this.graph.getNodes(), "node");
    },
  },
  //生命周期 - 挂载完成（可以访问DOM元素）",
  mounted() {
    this.initGraph()
  },
};
</script>
<style lang="scss" scoped>
.dashboard-container {
  .antvBox {
    display: flex;
    width: 100%;
    height: 100%;
    color: black;
    padding-top: 20px;
    .menu-list {
      height: 100%;
      width: 300px;
      padding: 0 10px;
      box-sizing: border-box;
      display: flex;
      justify-content: space-between;
      align-content: flex-start;
      flex-wrap: wrap;
      > div {
        margin-bottom: 10px;
        border-radius: 5px;
        padding: 0 10px;
        box-sizing: border-box;
        cursor: pointer;
        color: black;
        width: 105px;
        display: flex;
        flex-wrap: wrap;

        justify-content: center;
        img {
          height: 50px;
          width: 50px;
        }
        P {
          width: 90px;
          text-align: center;
        }
      }
    }
    .canvas-card {
      width: 1700px;
      height: 750px;
      box-sizing: border-box;
      > div {
        width: 1400px;
        height: 750px;
        border: 2px dashed #2149ce;
      }
    }
  }
}
</style>


