From ba07da6b1011e77c9ed42e8643e62b903c6c6d7b Mon Sep 17 00:00:00 2001
From: Bastien Wirtz <bastien.wirtz@gmail.com>
Date: Sat, 6 Mar 2021 22:50:58 -0800
Subject: Avoid full reload when swithcing page.

---
 src/App.vue                | 65 +++++++++++++++++++++++++---------------------
 src/components/Message.vue | 25 +++++++++++++-----
 2 files changed, 54 insertions(+), 36 deletions(-)

(limited to 'src')

diff --git a/src/App.vue b/src/App.vue
index cd1d9ba..aff340c 100644
--- a/src/App.vue
+++ b/src/App.vue
@@ -13,7 +13,9 @@
       <section v-if="config.header" class="first-line">
         <div v-cloak class="container">
           <div class="logo">
-            <a href="#"><img v-if="config.logo" :src="config.logo" alt="dashboard logo" /></a>
+            <a href="#">
+              <img v-if="config.logo" :src="config.logo" alt="dashboard logo" />
+            </a>
             <i v-if="config.icon" :class="config.icon"></i>
           </div>
           <div class="dashboard-title">
@@ -149,36 +151,41 @@ export default {
     };
   },
   created: async function () {
-    const defaults = jsyaml.load(defaultConfig);
-    let config;
-    window.onhashchange = function() { location.reload(); };
-    try {
-      config = await this.getConfig();
-      const path = (window.location.hash.substring(1) != '') ? window.location.hash.substring(1) : null;
-      if (path) {
-        let pathConfig = await this.getConfig(`assets/${path}.yml`); // the slash (/) is included in the pathname
-        for (const prop in pathConfig) config[prop] = pathConfig[prop];
-      }
-      // config = await this.getConfig(path ? `assets/${path}.yml` : null);
-      //config = await (path ? this.getConfig(`assets/${path}.yml`) : this.getConfig())
-    } catch (error) {
-      console.log(error);
-      config = this.handleErrors("⚠️ Error loading configuration", error);
-    }
-    this.config = merge(defaults, config);
-    this.services = this.config.services;
-    document.title =
-      this.config.documentTitle ||
-      `${this.config.title} | ${this.config.subtitle}`;
-    if (this.config.stylesheet) {
-      let stylesheet = "";
-      for (const file of this.config.stylesheet) {
-        stylesheet += `@import "${file}";`;
-      }
-      this.createStylesheet(stylesheet);
-    }
+    this.buildDashboard();
+    window.onhashchange = this.buildDashboard;
   },
   methods: {
+    buildDashboard: async function () {
+      const defaults = jsyaml.load(defaultConfig);
+      let config;
+      try {
+        config = await this.getConfig();
+        const path =
+          window.location.hash.substring(1) != ""
+            ? window.location.hash.substring(1)
+            : null;
+
+        if (path) {
+          let pathConfig = await this.getConfig(`assets/${path}.yml`); // the slash (/) is included in the pathname
+          config = Object.assign(config, pathConfig);
+        }
+      } catch (error) {
+        console.log(error);
+        config = this.handleErrors("⚠️ Error loading configuration", error);
+      }
+      this.config = merge(defaults, config);
+      this.services = this.config.services;
+      document.title =
+        this.config.documentTitle ||
+        `${this.config.title} | ${this.config.subtitle}`;
+      if (this.config.stylesheet) {
+        let stylesheet = "";
+        for (const file of this.config.stylesheet) {
+          stylesheet += `@import "${file}";`;
+        }
+        this.createStylesheet(stylesheet);
+      }
+    },
     getConfig: function (path = "assets/config.yml") {
       return fetch(path).then((response) => {
         if (response.redirected) {
diff --git a/src/components/Message.vue b/src/components/Message.vue
index 2f71f3f..7c6acdd 100644
--- a/src/components/Message.vue
+++ b/src/components/Message.vue
@@ -22,7 +22,6 @@ export default {
   },
   data: function () {
     return {
-      show: false,
       message: {},
     };
   },
@@ -30,14 +29,23 @@ export default {
     // Look for a new message if an endpoint is provided.
     this.message = Object.assign({}, this.item);
     await this.getMessage();
-    this.show = this.message.title || this.message.content;
   },
-
+  computed: {
+    show: function () {
+      return this.message.title || this.message.content;
+    },
+  },
+  watch: {
+    item: function (item) {
+      this.message = Object.assign({}, item);
+    },
+  },
   methods: {
-    getMessage: async function() {
+    getMessage: async function () {
       if (this.item && this.item.url) {
         let fetchedMessage = await this.downloadMessage(this.item.url);
-        if (this.item.mapping) fetchedMessage = this.mapRemoteMessage(fetchedMessage);
+        if (this.item.mapping)
+          fetchedMessage = this.mapRemoteMessage(fetchedMessage);
         // keep the original config value if no value is provided by the endpoint
         for (const prop of ["title", "style", "content"]) {
           if (prop in fetchedMessage && fetchedMessage[prop] !== null) {
@@ -45,7 +53,8 @@ export default {
           }
         }
       }
-      if (this.item.refreshInterval) setTimeout(this.getMessage, this.item.refreshInterval);
+      if (this.item.refreshInterval)
+        setTimeout(this.getMessage, this.item.refreshInterval);
     },
 
     downloadMessage: function (url) {
@@ -60,7 +69,9 @@ export default {
     mapRemoteMessage: function (message) {
       let mapped = {};
       // map property from message into mapped according to mapping config (only if field has a value):
-      for (const prop in this.item.mapping) if (message[this.item.mapping[prop]]) mapped[prop] = message[this.item.mapping[prop]];
+      for (const prop in this.item.mapping)
+        if (message[this.item.mapping[prop]])
+          mapped[prop] = message[this.item.mapping[prop]];
       return mapped;
     },
   },
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