From a3cf9de01b507c6f1ec183d021706e0181395148 Mon Sep 17 00:00:00 2001
From: Sidharth Vinod <sidharthv96@gmail.com>
Date: Wed, 9 Apr 2025 15:50:27 +0530
Subject: [PATCH] fix: Move Tooltip as vue component

---
 .../src/docs/.vitepress/theme/Tooltip.vue     | 88 ++++++++++++++++++
 .../src/docs/.vitepress/theme/index.ts        | 91 +------------------
 2 files changed, 91 insertions(+), 88 deletions(-)
 create mode 100644 packages/mermaid/src/docs/.vitepress/theme/Tooltip.vue

diff --git a/packages/mermaid/src/docs/.vitepress/theme/Tooltip.vue b/packages/mermaid/src/docs/.vitepress/theme/Tooltip.vue
new file mode 100644
index 000000000..75708ec2f
--- /dev/null
+++ b/packages/mermaid/src/docs/.vitepress/theme/Tooltip.vue
@@ -0,0 +1,88 @@
+<template>
+  <div
+    v-if="isVisible"
+    class="mermaid-chart-tooltip"
+    :class="{ visible: isVisible }"
+    :style="tooltipStyle"
+  >
+    <span class="mdi mdi-open-in-new"></span>
+    Opens in MermaidChart.com
+  </div>
+</template>
+
+<script setup lang="ts">
+import { ref, onMounted, onUnmounted } from 'vue';
+
+const isVisible = ref(false);
+const currentTarget = ref<HTMLElement | null>(null);
+const tooltipStyle = ref({});
+
+const showTooltip = (target: HTMLElement) => {
+  currentTarget.value = target;
+  const rect = target.getBoundingClientRect();
+  tooltipStyle.value = {
+    left: `${rect.left + rect.width / 2}px`,
+    top: `${rect.top}px`,
+  };
+  isVisible.value = true;
+};
+
+const hideTooltip = () => {
+  currentTarget.value = null;
+  isVisible.value = false;
+};
+
+const handleMouseOver = (e: MouseEvent) => {
+  const target = e.target as HTMLElement;
+  if (
+    target.matches('a[href*="mermaidchart.com"]') ||
+    target.matches('button[onclick*="mermaidchart.com"]')
+  ) {
+    showTooltip(target);
+  }
+};
+
+const handleMouseOut = (e: MouseEvent) => {
+  if (!currentTarget.value?.contains(e.relatedTarget as HTMLElement)) {
+    hideTooltip();
+  }
+};
+
+onMounted(() => {
+  document.addEventListener('mouseover', handleMouseOver);
+  document.addEventListener('mouseout', handleMouseOut);
+});
+
+onUnmounted(() => {
+  document.removeEventListener('mouseover', handleMouseOver);
+  document.removeEventListener('mouseout', handleMouseOut);
+});
+</script>
+
+<style>
+.mermaid-chart-tooltip {
+  position: fixed;
+  background: black;
+  color: white;
+  padding: 0.3rem 0.6rem;
+  border-radius: 0.5rem;
+  font-size: 1rem;
+  pointer-events: none;
+  z-index: 1000;
+  text-align: center;
+  opacity: 0;
+  transition:
+    opacity 0.3s ease,
+    transform 0.3s ease;
+  transform: translate(-50%, -90%);
+  margin-top: -0.5rem;
+  display: flex;
+  align-items: center;
+  gap: 0.375rem;
+}
+
+.mermaid-chart-tooltip.visible {
+  opacity: 1;
+  transform: translate(-50%, -100%);
+}
+</style>
diff --git a/packages/mermaid/src/docs/.vitepress/theme/index.ts b/packages/mermaid/src/docs/.vitepress/theme/index.ts
index 383291799..3996dde1a 100644
--- a/packages/mermaid/src/docs/.vitepress/theme/index.ts
+++ b/packages/mermaid/src/docs/.vitepress/theme/index.ts
@@ -1,13 +1,10 @@
 /* eslint-disable no-console */
 import DefaultTheme from 'vitepress/theme';
 import './custom.css';
-// @ts-ignore Type not available
 import Mermaid from './Mermaid.vue';
-// @ts-ignore Type not available
+import Tooltip from './Tooltip.vue';
 import Contributors from '../components/Contributors.vue';
-// @ts-ignore Type not available
 import HomePage from '../components/HomePage.vue';
-// @ts-ignore Type not available
 import TopBar from '../components/TopBar.vue';
 import { getRedirect } from './redirect.js';
 // @ts-ignore Type not available
@@ -17,89 +14,14 @@ import Theme from 'vitepress/theme';
 import { h } from 'vue';
 import '../style/main.css';
 
-// Add tooltips to Mermaid Chart buttons
-const addMermaidChartTooltips = () => {
-  const tooltipStyle = document.createElement('style');
-  tooltipStyle.textContent = `
-    .mermaid-chart-tooltip {
-      position: absolute;
-      background: black;
-      color: white;
-      padding: 0.3rem 0.6rem;
-      border-radius: 0.5rem;
-      font-size: 1rem;
-      pointer-events: none;
-      z-index: 1000;
-      max-width: 20rem;
-      text-align: center;
-      opacity: 0;
-      transition: opacity 0.3s ease, transform 0.3s ease;
-      transform: translateY(-90%);
-      margin-top: -0.5rem;
-      display: flex;
-      align-items: center;
-      gap: 0.375rem;
-    }
-    .mermaid-chart-tooltip.visible {
-      opacity: 1;
-      transform: translateY(-100%);
-    }
-    .mermaid-chart-tooltip svg {
-      width: 1.25rem;
-      height: 1.25rem;
-      fill: currentColor;
-    }
-  `;
-  document.head.appendChild(tooltipStyle);
-
-  const tooltip = document.createElement('div');
-  tooltip.className = 'mermaid-chart-tooltip';
-  document.body.appendChild(tooltip);
-
-  let currentTarget: HTMLElement | null = null;
-
-  const showTooltip = (target: HTMLElement) => {
-    currentTarget = target;
-    const rect = target.getBoundingClientRect();
-    tooltip.innerHTML = `
-      <span class="mdi mdi-open-in-new"></span>
-      Opens in MermaidChart.com
-    `;
-    tooltip.style.left = rect.left + rect.width / 2 - tooltip.offsetWidth / 2 + 'px';
-    tooltip.style.top = rect.top + 'px';
-    tooltip.classList.add('visible');
-  };
-
-  const hideTooltip = () => {
-    currentTarget = null;
-    tooltip.classList.remove('visible');
-  };
-
-  document.addEventListener('mouseover', (e) => {
-    const target = e.target as HTMLElement;
-    if (
-      target.matches('a[href*="mermaidchart.com"]') ||
-      target.matches('button[onclick*="mermaidchart.com"]')
-    ) {
-      showTooltip(target);
-    }
-  });
-
-  document.addEventListener('mouseout', (e) => {
-    if (!currentTarget?.contains(e.relatedTarget as HTMLElement)) {
-      hideTooltip();
-    }
-  });
-};
-
 export default {
   ...DefaultTheme,
   Layout() {
     return h(Theme.Layout, null, {
-      // Keeping this as comment as it took a lot of time to figure out how to add a component to the top bar.
-      'home-hero-before': () => h(TopBar),
       'home-features-after': () => h(HomePage),
+      'home-hero-before': () => h(TopBar),
       'doc-before': () => h(TopBar),
+      'layout-bottom': () => h(Tooltip),
     });
   },
   enhanceApp({ app, router }: EnhanceAppContext) {
@@ -107,13 +29,6 @@ export default {
     app.component('Mermaid', Mermaid);
     app.component('Contributors', Contributors);
 
-    // Add tooltips after app is mounted
-    app.mixin({
-      mounted() {
-        addMermaidChartTooltips();
-      },
-    });
-
     router.onBeforeRouteChange = (to) => {
       try {
         const url = new URL(window.location.origin + to);