Make toast support preventDuplicates

templates/devtest/gitea-ui.tmpl

@@ -182,15 +182,6 @@
 		</div>
 	</div>
 
-	<div>
-		<h1>Toast</h1>
-		<div>
-			<button class="ui button" id="info-toast">Show Info Toast</button>
-			<button class="ui button" id="warning-toast">Show Warning Toast</button>
-			<button class="ui button" id="error-toast">Show Error Toast</button>
-		</div>
-	</div>
-
 	<div>
 		<h1>ComboMarkdownEditor</h1>
 		<div>ps: no JS code attached, so just a layout</div>
@@ -201,7 +192,5 @@
 	<div>
 		<button class="{{if true}}tw-bg-red{{end}} tw-p-5 tw-border tw-rounded hover:tw-bg-blue active:tw-bg-yellow">Button</button>
 	</div>
-
-	<script src="{{AssetUrlPrefix}}/js/devtest.js?v={{AssetVersion}}"></script>
 </div>
 {{template "base/footer" .}}

templates/devtest/toast.tmpl

@@ -0,0 +1,14 @@
+{{template "base/head" .}}
+
+<div>
+	<h1>Toast</h1>
+	<div>
+		<button class="ui button" id="info-toast">Show Info Toast</button>
+		<button class="ui button" id="warning-toast">Show Warning Toast</button>
+		<button class="ui button" id="error-toast">Show Error Toast</button>
+	</div>
+</div>
+
+<script src="{{AssetUrlPrefix}}/js/devtest.js?v={{AssetVersion}}"></script>
+
+{{template "base/footer" .}}

web_src/css/modules/animations.css

@@ -97,15 +97,15 @@ code.language-math.is-loading::after {
     transform: scale(1);
   }
   50% {
-    transform: scale(1.8);
+    transform: scale(1.5);
   }
   100% {
     transform: scale(1);
   }
 }
 
 .pulse {
-  animation: pulse 2s linear;
+  animation: pulse 200ms linear;
 }
 
 .ui.modal,

web_src/css/modules/toast.css

@@ -29,12 +29,23 @@
   background: transparent;
   border: none;
   display: flex;
-  width: 30px;
-  height: 30px;
+  min-width: 30px;
+  min-height: 30px;
   justify-content: center;
   align-items: center;
 }
 
+.toast-duplicate-number::before {
+  content: "(";
+}
+.toast-duplicate-number {
+  display: inline-flex;
+  margin: 0 2px;
+}
+.toast-duplicate-number::after {
+  content: ")";
+}
+
 .toast-close:hover {
   background: var(--color-hover);
 }

web_src/js/modules/toast.js

@@ -1,5 +1,6 @@
 import {htmlEscape} from 'escape-goat';
 import {svg} from '../svg.js';
+import {showElem} from '../utils/dom.js';
 import Toastify from 'toastify-js'; // don't use "async import", because when network error occurs, the "async import" also fails and nothing is shown
 
 const levels = {
@@ -21,12 +22,28 @@ const levels = {
 };
 
 // See https://github.com/apvarun/toastify-js#api for options
-function showToast(message, level, {gravity, position, duration, useHtmlBody, ...other} = {}) {
+function showToast(message, level, {gravity, position, duration, useHtmlBody, preventDuplicates = true, ...other} = {}) {
+  const body = useHtmlBody ? String(message) : htmlEscape(message);
+  const key = `${level}-${body}`;
+
+  // prevent showing duplicate toasts with same level and message, and give a visual feedback for end users
+  if (preventDuplicates) {
+    const toastEl = document.querySelector(`.toastify[data-toast-unique-key="${CSS.escape(key)}"]`);
+    if (toastEl) {
+      const toastDupNumEl = toastEl.querySelector('.toast-duplicate-number');
+      showElem(toastDupNumEl);
+      toastDupNumEl.textContent = String(Number(toastDupNumEl.textContent) + 1);
+      toastDupNumEl.classList.remove('pulse');
+      requestAnimationFrame(() => toastDupNumEl.classList.add('pulse'));
+      return;
+    }
+  }
+
   const {icon, background, duration: levelDuration} = levels[level ?? 'info'];
   const toast = Toastify({
     text: `
-      <div class='toast-icon'>${svg(icon)}</div>
-      <div class='toast-body'>${useHtmlBody ? message : htmlEscape(message)}</div>
+      <div class='toast-icon'>${svg(icon)}<span class="toast-duplicate-number tw-hidden">1</span></div>
+      <div class='toast-body'>${body}</div>
       <button class='toast-close'>${svg('octicon-x')}</button>
     `,
     escapeMarkup: false,
@@ -39,6 +56,7 @@ function showToast(message, level, {gravity, position, duration, useHtmlBody, ..
 
   toast.showToast();
   toast.toastElement.querySelector('.toast-close').addEventListener('click', () => toast.hideToast());
+  toast.toastElement.setAttribute('data-toast-unique-key', key);
   return toast;
 }