console: add a theme provider to not rely on CSS only

console/frontend/src/App.vue

@@ -1,4 +1,5 @@
 <template>
+  <ThemeProvider>
     <AppNotifications />
     <div class="flex max-h-screen flex-col">
       <NavigationBar class="flex-none" />
@@ -6,6 +7,7 @@
         <router-view />
       </main>
     </div>
+  </ThemeProvider>
 </template>
 
 <script setup>
@@ -13,4 +15,5 @@ import "./tailwind.css";
 
 import NavigationBar from "./components/NavigationBar.vue";
 import AppNotifications from "./components/AppNotifications.vue";
+import ThemeProvider from "./components/ThemeProvider.vue";
 </script>

console/frontend/src/components/DarkMode.vue

@@ -1,42 +0,0 @@
-<template>
-  <button
-    type="button"
-    class="rounded-lg p-2.5 text-sm text-gray-500 hover:bg-gray-100 focus:outline-none focus:ring-4 focus:ring-gray-200 dark:text-gray-400 dark:hover:bg-gray-700 dark:focus:ring-gray-700"
-    @click="toggle()"
-  >
-    <MoonIcon v-if="!dark" class="h-5 w-5" />
-    <SunIcon v-if="dark" class="h-5 w-5" />
-  </button>
-</template>
-
-<script setup>
-import { ref, watch } from "vue";
-import { SunIcon, MoonIcon } from "@heroicons/vue/solid";
-
-const dark = ref(false);
-
-if (
-  localStorage.getItem("color-theme") === "dark" ||
-  (!("color-theme" in localStorage) &&
-    window.matchMedia("(prefers-color-scheme: dark)").matches)
-) {
-  dark.value = true;
-}
-
-watch(
-  dark,
-  (dark) => {
-    if (dark) {
-      document.documentElement.classList.add("dark");
-    } else {
-      document.documentElement.classList.remove("dark");
-    }
-  },
-  { immediate: true }
-);
-
-const toggle = () => {
-  dark.value = !dark.value;
-  localStorage.setItem("color-theme", dark.value ? "dark" : "light");
-};
-</script>

console/frontend/src/components/DarkModeSwitcher.vue

@@ -0,0 +1,16 @@
+<template>
+  <button
+    type="button"
+    class="rounded-lg p-2.5 text-sm text-gray-500 hover:bg-gray-100 focus:outline-none focus:ring-4 focus:ring-gray-200 dark:text-gray-400 dark:hover:bg-gray-700 dark:focus:ring-gray-700"
+    @click="toggle()"
+  >
+    <MoonIcon v-if="!isDark()" class="h-5 w-5" />
+    <SunIcon v-if="isDark()" class="h-5 w-5" />
+  </button>
+</template>
+
+<script setup>
+import { inject } from "vue";
+import { SunIcon, MoonIcon } from "@heroicons/vue/solid";
+const { isDark, toggle } = inject("darkMode");
+</script>

console/frontend/src/components/NavigationBar.vue

@@ -17,7 +17,7 @@
         >
       </router-link>
       <div class="flex md:order-2">
-        <DarkMode />
+        <DarkModeSwitcher />
         <DisclosureButton
           class="ml-3 inline-flex items-center rounded-lg p-2 text-sm text-gray-500 hover:bg-gray-100 focus:outline-none focus:ring-2 focus:ring-gray-200 dark:text-gray-400 dark:hover:bg-gray-700 dark:focus:ring-gray-600 md:hidden"
         >
@@ -70,7 +70,7 @@ import {
   XIcon,
   PresentationChartLineIcon,
 } from "@heroicons/vue/solid";
-import DarkMode from "./DarkMode.vue";
+import DarkModeSwitcher from "./DarkModeSwitcher.vue";
 
 const route = useRoute();
 const navigation = computed(() => [

console/frontend/src/components/ThemeProvider.vue

@@ -0,0 +1,40 @@
+<template>
+  <slot></slot>
+</template>
+
+<script setup>
+import { ref, provide, watch } from "vue";
+
+const isDark = ref(false);
+const toggleDarkMode = () => {
+  isDark.value = !isDark.value;
+  localStorage.setItem("color-theme", isDark.value ? "dark" : "light");
+};
+
+if (
+  localStorage.getItem("color-theme") === "dark" ||
+  (!("color-theme" in localStorage) &&
+    window.matchMedia("(prefers-color-scheme: dark)").matches)
+) {
+  isDark.value = true;
+}
+
+watch(
+  isDark,
+  (isDark) => {
+    if (isDark) {
+      document.documentElement.classList.add("dark");
+    } else {
+      document.documentElement.classList.remove("dark");
+    }
+  },
+  { immediate: true }
+);
+
+provide("darkMode", {
+  isDark() {
+    return isDark.value;
+  },
+  toggle: toggleDarkMode,
+});
+</script>

console/frontend/src/components/WidgetGraph.vue

@@ -7,12 +7,14 @@
 </template>
 
 <script setup>
-import { ref, watch } from "vue";
+import { ref, watch, inject } from "vue";
 import { use, graphic } from "echarts/core";
 import { CanvasRenderer } from "echarts/renderers";
 import { LineChart } from "echarts/charts";
 import { TooltipComponent, GridComponent } from "echarts/components";
 import VChart from "vue-echarts";
+import { dataColor } from "../utils/palette.js";
+const { isDark } = inject("darkMode");
 
 use([CanvasRenderer, LineChart, TooltipComponent, GridComponent]);
 
@@ -55,21 +57,30 @@ const option = ref({
       type: "line",
       symbol: "none",
       lineStyle: {
-        color: "#5470c6",
         width: 1,
       },
-      areaStyle: {
-        opacity: 1,
-        color: new graphic.LinearGradient(0, 0, 0, 1, [
-          { offset: 0, color: "#5470c6" },
-          { offset: 1, color: "#5572c8" },
-        ]),
-      },
       data: [],
     },
   ],
 });
 
+watch(
+  isDark,
+  (isDark) => {
+    const theme = isDark ? "dark" : "light";
+    option.value.darkMode = isDark;
+    option.value.series[0].areaStyle = {
+      opacity: 0.9,
+      color: new graphic.LinearGradient(0, 0, 0, 1, [
+        { offset: 0, color: dataColor(0, false, theme) },
+        { offset: 1, color: dataColor(0, true, theme) },
+      ]),
+    };
+    option.value.series[0].lineStyle.color = dataColor(0, false, theme);
+  },
+  { immediate: true }
+);
+
 watch(
   () => props.refresh,
   async () => {

console/frontend/src/components/WidgetTop.vue

@@ -8,12 +8,14 @@
 </template>
 
 <script setup>
-import { ref, watch } from "vue";
+import { ref, watch, inject } from "vue";
 import { use } from "echarts/core";
 import { CanvasRenderer } from "echarts/renderers";
 import { PieChart } from "echarts/charts";
 import { TooltipComponent, LegendComponent } from "echarts/components";
 import VChart from "vue-echarts";
+import { dataColor, dataColorGrey } from "../utils/palette.js";
+const { isDark } = inject("darkMode");
 
 use([CanvasRenderer, PieChart, TooltipComponent, LegendComponent]);
 
@@ -45,7 +47,6 @@ const option = ref({
     itemGap: 5,
     itemWidth: 14,
     itemHeight: 14,
-    backgroundColor: "rgba(255, 255, 255, 0.4)",
     textStyle: { fontSize: 10 },
     formatter(name) {
       return name.split(": ")[0];
@@ -57,21 +58,29 @@ const option = ref({
       label: { show: false },
       center: ["50%", "40%"],
       radius: "60%",
-      itemStyle: {
-        color({ name, dataIndex }) {
-          if (name === "Others") {
-            return "#aaa";
-          }
-          return ["#5470c6", "#91cc75", "#fac858", "#ee6666", "#73c0de"][
-            dataIndex % 5
-          ];
-        },
-      },
       data: [],
     },
   ],
 });
 
+watch(
+  isDark,
+  (isDark) => {
+    const theme = isDark ? "dark" : "light";
+    option.value.darkMode = isDark;
+    option.value.series.itemStyle = {
+      color({ name, dataIndex }) {
+        if (name === "Others") {
+          return dataColorGrey(0, false, theme);
+        }
+        return dataColor(dataIndex, false, theme);
+      },
+    };
+    option.value.legend.textStyle.color = isDark ? "#eee" : "#111";
+  },
+  { immediate: true }
+);
+
 watch(
   () => props.refresh,
   async () => {

console/frontend/src/views/VisualizePage.vue

@@ -65,7 +65,7 @@
 </template>
 
 <script setup>
-import { ref, watch } from "vue";
+import { ref, watch, inject } from "vue";
 import { notify } from "notiwind";
 import { Date as SugarDate } from "sugar-date";
 import { use, graphic } from "echarts/core";
@@ -75,6 +75,7 @@ import { TooltipComponent, GridComponent } from "echarts/components";
 import VChart from "vue-echarts";
 import { ResizeRow } from "vue-resizer";
 import { dataColor, dataColorGrey } from "../utils/palette.js";
+const { isDark } = inject("darkMode");
 
 use([CanvasRenderer, LineChart, TooltipComponent, GridComponent]);
 
@@ -139,6 +140,7 @@ const request = ref({
     ],
   },
 });
+const fetchedData = ref({});
 
 watch(
   request,
@@ -161,8 +163,16 @@ watch(
       return;
     }
     const data = await response.json();
+    fetchedData.value = data;
+  },
+  { immediate: true }
+);
+
+watch([fetchedData, isDark], ([data, isDark]) => {
+  const theme = isDark ? "dark" : "light";
 
   // Graphic
+  graph.value.darkMode = isDark;
   graph.value.xAxis.data = data.t.slice(1, -1);
   graph.value.series = data.rows.map((rows, idx) => {
     const color = rows.some((name) => name === "Other")
@@ -173,17 +183,17 @@ watch(
       name: rows.join(" — "),
       symbol: "none",
       itemStyle: {
-          color: color(idx),
+        color: color(idx, false, theme),
       },
       lineStyle: {
-          color: color(idx),
+        color: color(idx, false, theme),
         width: 1,
       },
       areaStyle: {
         opacity: 0.95,
         color: new graphic.LinearGradient(0, 0, 0, 1, [
-            { offset: 0, color: color(idx) },
+          { offset: 0, color: color(idx, false, theme) },
-            { offset: 1, color: color(idx, true) },
+          { offset: 1, color: color(idx, true, theme) },
         ]),
       },
       emphasis: {
@@ -203,14 +213,12 @@ watch(
         : dataColor;
       return {
         dimensions: rows,
-          style: `background-color: ${color(idx)}`,
+        style: `background-color: ${color(idx, false, theme)}`,
         min: data.min[idx],
         max: data.max[idx],
         average: data.average[idx],
       };
     }),
   };
-  },
+});
-  { immediate: true }
-);
 </script>