From 5d031b3df29e3c4a1ce2ecab20dcbc2a6ffc5e35 Mon Sep 17 00:00:00 2001
From: Lawrence <1934378145@qq.com>
Date: Wed, 20 Jan 2021 20:41:24 +0800
Subject: [PATCH] =?UTF-8?q?=E5=A2=9E=E5=8A=A0=E6=8A=A5=E8=AD=A6=E4=BF=A1?=
 =?UTF-8?q?=E6=81=AF=E6=8E=A8=E9=80=81=E8=AF=B7=E6=B1=82=E5=92=8C=E9=A1=B5?=
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Content-Transfer-Encoding: 8bit

---
 web_src/src/components/UiHeader.vue | 58 +++++++++++++++++++++++++++--
 1 file changed, 54 insertions(+), 4 deletions(-)

diff --git a/web_src/src/components/UiHeader.vue b/web_src/src/components/UiHeader.vue
index fa57b263..17a6880b 100644
--- a/web_src/src/components/UiHeader.vue
+++ b/web_src/src/components/UiHeader.vue
@@ -3,7 +3,8 @@
 		<el-menu router :default-active="this.$route.path" background-color="#545c64" text-color="#fff" active-text-color="#ffd04b" mode="horizontal">
             <el-menu-item index="/">控制台</el-menu-item>
             <el-menu-item index="/videoList">设备列表</el-menu-item>
-             <el-menu-item index="/parentPlatformList/15/1">国标级联</el-menu-item>
+            <el-menu-item index="/parentPlatformList/15/1">国标级联</el-menu-item>
+            <el-switch v-model="alarmNotify"  active-text="报警信息推送" style="display: block float: right" @change="sseControl"></el-switch>
             <el-menu-item style="float: right;" @click="loginout">退出</el-menu-item>
         </el-menu>
 	</div>
@@ -12,14 +13,63 @@
 <script>
 export default {
     name: "UiHeader",
+    components: { Notification },
+    data() {
+        return {
+            alarmNotify: true,
+            sseSource: null,
+        };
+    },
     methods:{
-
   	    loginout(){
             // 删除cookie，回到登录页面
             this.$cookies.remove("session");
             this.$router.push('/login');
+            this.sseSource.close();
+        },
+        beforeunloadHandler() {
+            this.sseSource.close();
         },
-    }
-}
+        sseControl() {
+            let that = this;
+            if (this.alarmNotify) {
+                this.sseSource = new EventSource('/api/emit'); 
+        	    this.sseSource.addEventListener('message', function(evt) {
+                    that.$notify({
+                        title: '收到报警信息',
+                        dangerouslyUseHTMLString: true,
+                        message: evt.data,
+                        type: 'warning'
+                    });
+	                console.log("收到信息：" + evt.data);
+        	    });
+	            this.sseSource.addEventListener('open', function(e) {
+        	        console.log("SSE连接打开.");
+	            }, false);
+        	    this.sseSource.addEventListener('error', function(e) {
+	                if (e.target.readyState == EventSource.CLOSED) {
+	                    console.log("SSE连接关闭");
+        	        } else {
+	                    console.log(e.target.readyState);
+        	        }
+	            }, false);
+            } else {
+                this.sseSource.removeEventListener('open', null);
+                this.sseSource.removeEventListener('message', null);
+                this.sseSource.removeEventListener('error', null);
+                this.sseSource.close();
+            } 
+        }
+    },
+    mounted() {
+        window.addEventListener('beforeunload', e => this.beforeunloadHandler(e))
+        // window.addEventListener('unload', e => this.unloadHandler(e))
+        this.sseControl();
+    },
+    destroyed() {
+        window.removeEventListener('beforeunload', e => this.beforeunloadHandler(e))
+        // window.removeEventListener('unload', e => this.unloadHandler(e))
+    },
+ }
 
 </script>