Feat: tooltip enhancement

frontend/src/components/RichTooltip.vue

@@ -0,0 +1,351 @@
+<template>
+  <div 
+    ref="wrapperRef"
+    class="tooltip-wrapper"
+    @mouseenter="handleMouseEnter"
+    @mouseleave="handleMouseLeave"
+    @focus="handleFocus"
+    @blur="handleBlur"
+    @keydown.space.prevent="handleKeyboardActivate"
+    @keydown.enter.prevent="handleKeyboardActivate"
+    @keydown.escape="handleDismiss"
+  >
+    <slot></slot>
+
+    <teleport to="body">
+      <transition name="tooltip-fade">
+        <div
+          v-if="isVisible"
+          ref="tooltipRef"
+          class="rich-tooltip"
+          :class="[`tooltip-${placement}`, { 'tooltip-keyboard-active': keyboardActive }]"
+          :style="tooltipStyle"
+          role="tooltip"
+          :aria-hidden="!isVisible"
+          @mouseenter="handleTooltipMouseEnter"
+          @mouseleave="handleTooltipMouseLeave"
+        >
+          <div class="tooltip-content">
+            <h4 v-if="content.title" class="tooltip-title">{{ content.title }}</h4>
+            <p class="tooltip-description">{{ content.description }}</p>
+            <ul v-if="content.examples && content.examples.length" class="tooltip-examples">
+              <li v-for="(example, index) in content.examples" :key="index">{{ example }}</li>
+            </ul>
+            <a
+              v-if="content.learnMoreUrl"
+              :href="content.learnMoreUrl"
+              target="_blank"
+              rel="noopener"
+              class="tooltip-learn-more"
+              @click="handleLearnMore"
+            >
+              Learn More →
+            </a>
+          </div>
+          <div class="tooltip-arrow" :data-placement="placement"></div>
+        </div>
+      </transition>
+    </teleport>
+  </div>
+</template>
+
+<script setup>
+import { ref, computed, onMounted, onBeforeUnmount, nextTick } from 'vue'
+
+const props = defineProps({
+  content: {
+    type: Object,
+    required: true,
+    validator: (value) => {
+      return value && typeof value.description === 'string'
+    }
+  },
+  delay: {
+    type: Number,
+    default: 500
+  },
+  placement: {
+    type: String,
+    default: 'top',
+    validator: (value) => ['top', 'bottom', 'left', 'right'].includes(value)
+  }
+})
+
+const isVisible = ref(false)
+const tooltipRef = ref(null)
+const wrapperRef = ref(null)
+const tooltipStyle = ref({})
+const hoverTimeout = ref(null)
+const mouseInTooltip = ref(false)
+const keyboardActive = ref(false)
+
+const handleMouseEnter = () => {
+  keyboardActive.value = false
+  clearTimeout(hoverTimeout.value)
+  hoverTimeout.value = setTimeout(() => {
+    showTooltip()
+  }, props.delay)
+}
+
+const handleMouseLeave = () => {
+  clearTimeout(hoverTimeout.value)
+  // Delay hiding to allow moving into tooltip
+  setTimeout(() => {
+    if (!mouseInTooltip.value) {
+      hideTooltip()
+    }
+  }, 100)
+}
+
+const handleFocus = () => {
+  // Don't auto-show on focus, wait for keyboard activation
+}
+
+const handleBlur = () => {
+  if (keyboardActive.value) {
+    hideTooltip()
+    keyboardActive.value = false
+  }
+}
+
+const handleKeyboardActivate = () => {
+  keyboardActive.value = true
+  showTooltip()
+}
+
+const handleDismiss = () => {
+  hideTooltip()
+  keyboardActive.value = false
+}
+
+const handleTooltipMouseEnter = () => {
+  mouseInTooltip.value = true
+}
+
+const handleTooltipMouseLeave = () => {
+  mouseInTooltip.value = false
+  hideTooltip()
+}
+
+const handleLearnMore = () => {
+  // Keep tooltip open when clicking learn more
+  // The link will open in new tab
+}
+
+const showTooltip = async () => {
+  isVisible.value = true
+  await nextTick()
+  calculatePosition()
+}
+
+const hideTooltip = () => {
+  isVisible.value = false
+  tooltipStyle.value = {}
+}
+
+const calculatePosition = () => {
+  if (!tooltipRef.value || !wrapperRef.value) return
+
+  const wrapper = wrapperRef.value.getBoundingClientRect()
+  const tooltip = tooltipRef.value.getBoundingClientRect()
+  const viewport = {
+    width: window.innerWidth,
+    height: window.innerHeight
+  }
+
+  const offset = 12 // Distance from target element
+  let top = 0
+  let left = 0
+  let actualPlacement = props.placement
+
+  // Calculate initial position based on preferred placement
+  switch (props.placement) {
+    case 'top':
+      top = wrapper.top - tooltip.height - offset
+      left = wrapper.left + (wrapper.width / 2) - (tooltip.width / 2)
+      break
+    case 'bottom':
+      top = wrapper.bottom + offset
+      left = wrapper.left + (wrapper.width / 2) - (tooltip.width / 2)
+      break
+    case 'left':
+      top = wrapper.top + (wrapper.height / 2) - (tooltip.height / 2)
+      left = wrapper.left - tooltip.width - offset
+      break
+    case 'right':
+      top = wrapper.top + (wrapper.height / 2) - (tooltip.height / 2)
+      left = wrapper.right + offset
+      break
+  }
+
+  // Adjust if tooltip would go off-screen
+  if (left < 10) {
+    left = 10
+  } else if (left + tooltip.width > viewport.width - 10) {
+    left = viewport.width - tooltip.width - 10
+  }
+
+  if (top < 10) {
+    // If it would go above viewport, flip to bottom
+    if (props.placement === 'top') {
+      top = wrapper.bottom + offset
+      actualPlacement = 'bottom'
+    } else {
+      top = 10
+    }
+  } else if (top + tooltip.height > viewport.height - 10) {
+    // If it would go below viewport, flip to top
+    if (props.placement === 'bottom') {
+      top = wrapper.top - tooltip.height - offset
+      actualPlacement = 'top'
+    } else {
+      top = viewport.height - tooltip.height - 10
+    }
+  }
+
+  tooltipStyle.value = {
+    top: `${top}px`,
+    left: `${left}px`
+  }
+}
+
+// Listen to scroll and zoom events to dismiss tooltip
+const handleScroll = () => {
+  if (isVisible.value && !keyboardActive.value) {
+    hideTooltip()
+  }
+}
+
+const handleResize = () => {
+  if (isVisible.value) {
+    calculatePosition()
+  }
+}
+
+onMounted(() => {
+  // wrapperRef is now set via template ref, no need to query for it
+  window.addEventListener('scroll', handleScroll, true)
+  window.addEventListener('resize', handleResize)
+})
+
+onBeforeUnmount(() => {
+  clearTimeout(hoverTimeout.value)
+  window.removeEventListener('scroll', handleScroll, true)
+  window.removeEventListener('resize', handleResize)
+})
+</script>
+
+<style scoped>
+.tooltip-wrapper {
+  display: inline-block;
+  position: relative;
+}
+
+.rich-tooltip {
+  position: fixed;
+  z-index: 10000;
+  max-width: 320px;
+  background: rgba(26, 26, 26, 0.95);
+  color: #f2f2f2;
+  border-radius: 8px;
+  padding: 12px 16px;
+  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.4), 0 0 0 1px rgba(255, 255, 255, 0.1);
+  backdrop-filter: blur(10px);
+  font-size: 13px;
+  line-height: 1.5;
+  pointer-events: auto;
+}
+
+.tooltip-keyboard-active {
+  outline: 2px solid #60b7ff;
+  outline-offset: 2px;
+}
+
+.tooltip-content {
+  position: relative;
+}
+
+.tooltip-title {
+  margin: 0 0 8px 0;
+  font-size: 14px;
+  font-weight: 600;
+  color: #ffffff;
+}
+
+.tooltip-description {
+  margin: 0 0 8px 0;
+  color: #e0e0e0;
+}
+
+.tooltip-examples {
+  margin: 8px 0;
+  padding-left: 20px;
+  color: #c0c0c0;
+  font-size: 12px;
+}
+
+.tooltip-examples li {
+  margin: 4px 0;
+}
+
+.tooltip-learn-more {
+  display: inline-block;
+  margin-top: 8px;
+  color: #60b7ff;
+  text-decoration: none;
+  font-weight: 500;
+  font-size: 12px;
+  transition: color 0.2s;
+}
+
+.tooltip-learn-more:hover {
+  color: #99ffeb;
+  text-decoration: underline;
+}
+
+.tooltip-arrow {
+  position: absolute;
+  width: 10px;
+  height: 10px;
+  background: inherit;
+  transform: rotate(45deg);
+}
+
+.tooltip-top .tooltip-arrow {
+  bottom: -5px;
+  left: 50%;
+  transform: translateX(-50%) rotate(45deg);
+}
+
+.tooltip-bottom .tooltip-arrow {
+  top: -5px;
+  left: 50%;
+  transform: translateX(-50%) rotate(45deg);
+}
+
+.tooltip-left .tooltip-arrow {
+  right: -5px;
+  top: 50%;
+  transform: translateY(-50%) rotate(45deg);
+}
+
+.tooltip-right .tooltip-arrow {
+  left: -5px;
+  top: 50%;
+  transform: translateY(-50%) rotate(45deg);
+}
+
+.tooltip-fade-enter-active,
+.tooltip-fade-leave-active {
+  transition: opacity 0.2s ease, transform 0.2s ease;
+}
+
+.tooltip-fade-enter-from {
+  opacity: 0;
+  transform: translateY(-4px);
+}
+
+.tooltip-fade-leave-to {
+  opacity: 0;
+}
+</style>

frontend/src/components/StartNode.vue

@@ -1,6 +1,8 @@
 <script setup>
 import { computed } from 'vue'
 import { Handle, Position } from '@vue-flow/core'
+import RichTooltip from './RichTooltip.vue'
+import { helpContent } from '../utils/helpContent.js'
 
 const props = defineProps({
   id: {
@@ -15,11 +17,13 @@ const props = defineProps({
 </script>
 
 <template>
-  <div class="start-node" :style="{ opacity: data.opacity ?? 1 }">
-    <div class="start-node-bubble" title="Start Node"></div>
-    <!-- Provide source handle at right -->
-    <Handle id="source" type="source" :position="Position.Right" class="start-node-handle" />
-  </div>
+  <RichTooltip :content="helpContent.startNode" placement="right">
+    <div class="start-node" :style="{ opacity: data.opacity ?? 1 }">
+      <div class="start-node-bubble" title="Start Node"></div>
+      <!-- Provide source handle at right -->
+      <Handle id="source" type="source" :position="Position.Right" class="start-node-handle" />
+    </div>
+  </RichTooltip>
 </template>
 
 <style scoped>