Theme toggler (#136)

Add toggler to change theme (light, dark, auto)

.gitignore

@@ -4,5 +4,6 @@
 /server/ui/dist
 /Makefile
 /mailpit*
+/.idea
 *.old
 *.db

server/ui-src/App.vue

@@ -933,7 +933,7 @@ export default {
 
 			<MessageSummary v-if="message" :message="message"></MessageSummary>
 
-			<div class="position-fixed bottom-0 bg-white py-2 text-muted small w-100">
+			<div class="position-fixed bottom-0 py-2 text-muted small w-100">
 				<a href="#" class="text-muted" v-on:click="loadInfo">
 					<i class="bi bi-info-circle-fill"></i>
 					About
@@ -1196,4 +1196,53 @@ export default {
 	</div>
 
 	<MessageToast v-if="toastMessage" :message="toastMessage" @clearMessageToast="clearMessageToast"></MessageToast>
+
+  <!-- Toggle theme -->
+  <svg xmlns="http://www.w3.org/2000/svg" style="display: none;">
+    <symbol id="bootstrap" viewBox="0 0 512 408" fill="currentcolor">
+      <path d="M106.342 0c-29.214 0-50.827 25.58-49.86 53.32.927 26.647-.278 61.165-8.966 89.31C38.802 170.862 24.07 188.707 0 191v26c24.069 2.293 38.802 20.138 47.516 48.37 8.688 28.145 9.893 62.663 8.965 89.311C55.515 382.42 77.128 408 106.342 408h299.353c29.214 0 50.827-25.58 49.861-53.319-.928-26.648.277-61.166 8.964-89.311 8.715-28.232 23.411-46.077 47.48-48.37v-26c-24.069-2.293-38.765-20.138-47.48-48.37-8.687-28.145-9.892-62.663-8.964-89.31C456.522 25.58 434.909 0 405.695 0H106.342zm236.559 251.102c0 38.197-28.501 61.355-75.798 61.355h-87.202a2 2 0 01-2-2v-213a2 2 0 012-2h86.74c39.439 0 65.322 21.354 65.322 54.138 0 23.008-17.409 43.61-39.594 47.219v1.203c30.196 3.309 50.532 24.212 50.532 53.085zm-84.58-128.125h-45.91v64.814h38.669c29.888 0 46.373-12.03 46.373-33.535 0-20.151-14.174-31.279-39.132-31.279zm-45.91 90.53v71.431h47.605c31.12 0 47.605-12.482 47.605-35.941 0-23.46-16.947-35.49-49.608-35.49h-45.602z"/>
+    </symbol>
+    <symbol id="check2" viewBox="0 0 16 16" fill="currentcolor">
+      <path d="M13.854 3.646a.5.5 0 0 1 0 .708l-7 7a.5.5 0 0 1-.708 0l-3.5-3.5a.5.5 0 1 1 .708-.708L6.5 10.293l6.646-6.647a.5.5 0 0 1 .708 0z"/>
+    </symbol>
+    <symbol id="circle-half" viewBox="0 0 16 16" fill="currentcolor">
+      <path d="M8 15A7 7 0 1 0 8 1v14zm0 1A8 8 0 1 1 8 0a8 8 0 0 1 0 16z"/>
+    </symbol>
+    <symbol id="moon-stars-fill" viewBox="0 0 16 16" fill="currentcolor">
+      <path d="M6 .278a.768.768 0 0 1 .08.858 7.208 7.208 0 0 0-.878 3.46c0 4.021 3.278 7.277 7.318 7.277.527 0 1.04-.055 1.533-.16a.787.787 0 0 1 .81.316.733.733 0 0 1-.031.893A8.349 8.349 0 0 1 8.344 16C3.734 16 0 12.286 0 7.71 0 4.266 2.114 1.312 5.124.06A.752.752 0 0 1 6 .278z"/>
+      <path d="M10.794 3.148a.217.217 0 0 1 .412 0l.387 1.162c.173.518.579.924 1.097 1.097l1.162.387a.217.217 0 0 1 0 .412l-1.162.387a1.734 1.734 0 0 0-1.097 1.097l-.387 1.162a.217.217 0 0 1-.412 0l-.387-1.162A1.734 1.734 0 0 0 9.31 6.593l-1.162-.387a.217.217 0 0 1 0-.412l1.162-.387a1.734 1.734 0 0 0 1.097-1.097l.387-1.162zM13.863.099a.145.145 0 0 1 .274 0l.258.774c.115.346.386.617.732.732l.774.258a.145.145 0 0 1 0 .274l-.774.258a1.156 1.156 0 0 0-.732.732l-.258.774a.145.145 0 0 1-.274 0l-.258-.774a1.156 1.156 0 0 0-.732-.732l-.774-.258a.145.145 0 0 1 0-.274l.774-.258c.346-.115.617-.386.732-.732L13.863.1z"/>
+    </symbol>
+    <symbol id="sun-fill" viewBox="0 0 16 16" fill="currentcolor">
+      <path d="M8 12a4 4 0 1 0 0-8 4 4 0 0 0 0 8zM8 0a.5.5 0 0 1 .5.5v2a.5.5 0 0 1-1 0v-2A.5.5 0 0 1 8 0zm0 13a.5.5 0 0 1 .5.5v2a.5.5 0 0 1-1 0v-2A.5.5 0 0 1 8 13zm8-5a.5.5 0 0 1-.5.5h-2a.5.5 0 0 1 0-1h2a.5.5 0 0 1 .5.5zM3 8a.5.5 0 0 1-.5.5h-2a.5.5 0 0 1 0-1h2A.5.5 0 0 1 3 8zm10.657-5.657a.5.5 0 0 1 0 .707l-1.414 1.415a.5.5 0 1 1-.707-.708l1.414-1.414a.5.5 0 0 1 .707 0zm-9.193 9.193a.5.5 0 0 1 0 .707L3.05 13.657a.5.5 0 0 1-.707-.707l1.414-1.414a.5.5 0 0 1 .707 0zm9.193 2.121a.5.5 0 0 1-.707 0l-1.414-1.414a.5.5 0 0 1 .707-.707l1.414 1.414a.5.5 0 0 1 0 .707zM4.464 4.465a.5.5 0 0 1-.707 0L2.343 3.05a.5.5 0 1 1 .707-.707l1.414 1.414a.5.5 0 0 1 0 .708z"/>
+    </symbol>
+  </svg>
+  <div class="dropdown position-fixed bottom-0 end-0 mb-3 me-3 bd-mode-toggle">
+    <button class="btn btn-primary py-2 dropdown-toggle d-flex align-items-center" id="bd-theme" type="button" aria-expanded="false" data-bs-toggle="dropdown" aria-label="Toggle theme (light)">
+      <svg class="bi my-1 theme-icon-active" width="1em" height="1em"><use href="#sun-fill"></use></svg>
+      <span class="visually-hidden" id="bd-theme-text">Toggle theme</span>
+    </button>
+    <ul class="dropdown-menu dropdown-menu-end shadow" aria-labelledby="bd-theme-text" style="">
+      <li>
+        <button type="button" class="dropdown-item d-flex align-items-center active" data-bs-theme-value="light" aria-pressed="true">
+          <svg class="bi me-2 opacity-50 theme-icon" width="1em" height="1em"><use href="#sun-fill"></use></svg>
+          Light
+          <svg class="bi ms-auto d-none" width="1em" height="1em"><use href="#check2"></use></svg>
+        </button>
+      </li>
+      <li>
+        <button type="button" class="dropdown-item d-flex align-items-center" data-bs-theme-value="dark" aria-pressed="false">
+          <svg class="bi me-2 opacity-50 theme-icon" width="1em" height="1em"><use href="#moon-stars-fill"></use></svg>
+          Dark
+          <svg class="bi ms-auto d-none" width="1em" height="1em"><use href="#check2"></use></svg>
+        </button>
+      </li>
+      <li>
+        <button type="button" class="dropdown-item d-flex align-items-center" data-bs-theme-value="auto" aria-pressed="false">
+          <svg class="bi me-2 opacity-50 theme-icon" width="1em" height="1em"><use href="#circle-half"></use></svg>
+          Auto
+          <svg class="bi ms-auto d-none" width="1em" height="1em"><use href="#check2"></use></svg>
+        </button>
+      </li>
+    </ul>
+  </div>
 </template>

server/ui-src/app.js

@@ -3,5 +3,6 @@ import App from './App.vue';
 import "./assets/styles.scss";
 import "../../node_modules/bootstrap-icons/font/bootstrap-icons.scss";
 import "bootstrap";
+import "./color-modes";
 
 createApp(App).mount('#app');

server/ui-src/color-modes.js

@@ -0,0 +1,94 @@
+/*!
+ * Color mode toggler for Bootstrap's docs (https://getbootstrap.com/)
+ * Copyright 2011-2023 The Bootstrap Authors
+ * Licensed under the Creative Commons Attribution 3.0 Unported License.
+ */
+
+(() => {
+    'use strict';
+
+    const getStoredTheme = () => localStorage.getItem('theme');
+    const setStoredTheme = (theme) => localStorage.setItem('theme', theme);
+
+    const getPreferredTheme = () => {
+        const storedTheme = getStoredTheme();
+        if (storedTheme) {
+            return storedTheme;
+        }
+
+        return window.matchMedia('(prefers-color-scheme: dark)').matches
+            ? 'dark'
+            : 'light';
+    };
+
+    const setTheme = (theme) => {
+        if (
+            theme === 'auto' &&
+            window.matchMedia('(prefers-color-scheme: dark)').matches
+        ) {
+            document.documentElement.setAttribute('data-bs-theme', 'dark');
+        } else {
+            document.documentElement.setAttribute('data-bs-theme', theme);
+        }
+    };
+
+    setTheme(getPreferredTheme());
+
+    const showActiveTheme = (theme, focus = false) => {
+        const themeSwitcher = document.querySelector('#bd-theme');
+
+        if (!themeSwitcher) {
+            return;
+        }
+
+        const themeSwitcherText = document.querySelector('#bd-theme-text');
+        const activeThemeIcon = document.querySelector('.theme-icon-active use');
+        const btnToActive = document.querySelector(
+            `[data-bs-theme-value="${theme}"]`
+        );
+        const svgOfActiveBtn = btnToActive
+            .querySelector('svg use')
+            .getAttribute('href');
+
+        document.querySelectorAll('[data-bs-theme-value]').forEach((element) => {
+            element.classList.remove('active');
+            element.setAttribute('aria-pressed', 'false');
+        });
+
+        btnToActive.classList.add('active');
+        btnToActive.setAttribute('aria-pressed', 'true');
+        activeThemeIcon.setAttribute('href', svgOfActiveBtn);
+        const themeSwitcherLabel = `${themeSwitcherText.textContent} (${btnToActive.dataset.bsThemeValue})`;
+        themeSwitcher.setAttribute('aria-label', themeSwitcherLabel);
+
+        if (focus) {
+            themeSwitcher.focus();
+        }
+    };
+
+    window
+        .matchMedia('(prefers-color-scheme: dark)')
+        .addEventListener('change', () => {
+            const storedTheme = getStoredTheme();
+            if (storedTheme !== 'light' && storedTheme !== 'dark') {
+                setTheme(getPreferredTheme());
+            }
+        });
+
+    window.addEventListener('DOMContentLoaded', () => {
+        showActiveTheme(getPreferredTheme());
+
+        document.querySelectorAll('[data-bs-theme-value]').forEach((toggle) => {
+            toggle.addEventListener('click', () => {
+                const theme = toggle.getAttribute('data-bs-theme-value');
+                setStoredTheme(theme);
+                setTheme(theme);
+                showActiveTheme(theme, true);
+            });
+        });
+    });
+})();
+
+document.querySelectorAll('[data-bs-toggle="popover"]').forEach((popover) => {
+    new bootstrap.Popover(popover);
+});