修复无法单独选择显示下载上传网络速率问题

修复单独选择一项时，会自动回到全选择的问题
修复单独选择一项时查看指定时间速率提示报错的问题

web_src/src/components/console/ConsoleNet.vue

@@ -1,6 +1,6 @@
 <template>
   <div id="ConsoleNet" style="width: 100%; height: 100%; background: #FFFFFF; text-align: center">
-    <ve-line ref="ConsoleNet" :data="chartData" :extend="extend" :settings="chartSettings" width="100%" height="100%" ></ve-line>
+    <ve-line ref="ConsoleNet" :data="chartData" :extend="extend" :settings="chartSettings" :events="chartEvents" width="100%" height="100%" ></ve-line>
   </div>
 </template>
 
@@ -59,12 +59,54 @@ export default {
         tooltip: {
           trigger: 'axis',
           formatter: (data)=>{
-            return data[1].marker + "下载：" + parseFloat(data[1].data[1]).toFixed(2) + "Mbps" +  "</br> "+ data[0].marker +" 上传：" + parseFloat(data[0].data[1]).toFixed(2) + "Mbps";
+            let in_sel = true;
+            let out_sel = true;
+            for (let key in this.extend.legend.selected) {
+              if (key == "上传") {
+                out_sel = this.extend.legend.selected[key];
+              }
+              if (key == "下载") {
+                in_sel = this.extend.legend.selected[key];
+              }
+            }
+            if (out_sel && in_sel) {
+              return (
+                data[1].marker +
+                "下载：" +
+                parseFloat(data[1].data[1]).toFixed(2) +
+                "Mbps" +
+                "</br> " +
+                data[0].marker +
+                "上传：" +
+                parseFloat(data[0].data[1]).toFixed(2) +
+                "Mbps"
+              );
+            } else if (out_sel)
+              return (
+                data[0].marker +
+                "上传：" +
+                parseFloat(data[0].data[1]).toFixed(2) +
+                "Mbps"
+              );
+            else if (in_sel)
+              return (
+                data[0].marker +
+                "下载：" +
+                parseFloat(data[0].data[1]).toFixed(2) +
+                "Mbps"
+              );
+            return "";
           }
         },
         legend: {
           left: "center",
           bottom: "15px",
+          selected: {},
+        }
+      }
+      chartEvents: {
+        legendselectchanged: (item) => {
+          this.extend.legend.selected = item.selected;
         }
       }
     };