Custom Cell Content

Dynamically customize the cell content of the timeline by showing event-related icons, visual indicators, and a quick add button directly in each cell.

This is achieved using the cell slot, where event data in each cell is used to display icons based on the event, a badge showing total event hours, and a button to quickly add new events. The add event icon is dynamically added during onCellHoverIn. An event cap per cell is implemented by reading the event count from onCellHoverIn args and enforcing it in onEventCreate, blocking event creation by returning false. This approach helps visualize workload per day and enables quick actions, making scheduling more efficient and user-friendly.

In this demo, cells represent a day. Depending on the resolution, they can also stand for a week, month, or more, while remaining fully customizable. See this configuration demo to try out different timeline resolution settings.

Get started with this example

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Add workload badges, status icons, and a hover quick-add button to each Timeline cell — and cap events per cell.

Code

View code on GitHub 
<script setup>
import { MbscEventcalendar, MbscToast, setOptions } from '@mobiscroll/vue'
import { ref } from 'vue'

setOptions({
  locale:  ,
  theme: ' ',
  themeVariant: ' '
})

const iconMap = {
  Review: 'calendar',
  Demo: 'play',
  Kickoff: 'flag',
  Strategy: 'map',
  Collab: 'bubbles',
  Update: 'upload',
  Discussion: 'bubble',
  Planning: 'pencil',
  Retrospect: 'history',
  Onboard: 'user4'
}
const titles = Object.keys(iconMap)
const isToastOpen = ref(false)
const toastMessage = ref('')

const myEvents = ref([
  {
    id: 1,
    resource: 1,
    title: 'Review',
    start: '2026-11-02T00:00',
    end: '2026-11-02T02:00'
  },
  {
    id: 2,
    resource: 1,
    title: 'Demo',
    start: '2026-11-02T00:00',
    end: '2026-11-02T02:00'
  },
  {
    id: 3,
    resource: 1,
    title: 'Kickoff',
    start: '2026-11-02T00:00',
    end: '2026-11-02T02:00'
  },
  {
    id: 4,
    resource: 4,
    title: 'Strategy',
    start: '2026-11-02T00:00',
    end: '2026-11-02T02:00'
  },
  {
    id: 5,
    resource: 4,
    title: 'Collab',
    start: '2026-11-02T00:00',
    end: '2026-11-02T02:00'
  },
  // Showing partial data. Download full source.
])

const myResources = [
  { id: 1, name: 'Resource A' },
  { id: 2, name: 'Resource B' },
  { id: 3, name: 'Resource C' },
  { id: 4, name: 'Resource D' }
]

const myView = {
  timeline: {
    endDay: 5,
    eventDisplay: 'fill',
    type: 'month',
    resolutionHorizontal: 'day',
    startDay: 1
  }
}

function getHours(events = []) {
  const total = events.reduce((s, ev) => {
    const st = new Date(ev.start).getTime()
    const en = new Date(ev.end).getTime()
    return s + (en - st) / 36e5
  }, 0)
  return Math.round(total)
}

function getBadgeClass(events = []) {
  const hours = getHours(events)
  const map = { 2: 'light', 4: 'medium', 6: 'semi', 8: 'full' }
  return 'mds-timeline-cell-content-badge-' + (map[hours] || 'default')
}

function getIcons(events = []) {
  const titles = new Set()
  const icons = []
  for (const ev of events) {
    const name = iconMap[ev.title]
    if (name && !titles.has(ev.title)) {
      titles.add(ev.title)
      icons.push(name)
    }
  }
  return icons
}

function handleAddClick(cell) {
  if (cell.events.length >= 4) {
    toastMessage.value = 'Task limit reached'
    isToastOpen.value = true
    return
  }

  myEvents.value = [
    ...myEvents.value,
    {
      title: titles[Math.floor(Math.random() * titles.length)],
      start: cell.date,
      end: new Date(cell.date.getTime() + 2 * 3600000),
      resource: cell.resource.id
    }
  ]
}

function extendDefaultEvent(args) {
  return {
    title: titles[Math.floor(Math.random() * titles.length)],
    end: new Date(args.start.getTime() + 2 * 3600000)
  }
}
</script>

<template>
  <MbscEventcalendar
    cssClass="mds-timeline-cell-content"
    :clickToCreate="false"
    :data="myEvents"
    :dragToCreate="false"
    :dragToMove="false"
    :dragToResize="false"
    :extendDefaultEvent="extendDefaultEvent"
    :resources="myResources"
    :view="myView"
  >
    <template #cell="cell">
      <div :class="['mds-timeline-cell-content-badge', getBadgeClass(cell.events)]">
        {{ getHours(cell.events) }}h / 8h
      </div>

      <button class="mds-timeline-cell-content-add" @click.stop="handleAddClick(cell)">+</button>

      <div class="mds-timeline-cell-icons">
        <i
          v-for="icon in getIcons(cell.events)"
          :key="icon"
          :class="['mbsc-font-icon', 'mds-timeline-cell-icon', 'mbsc-icon-' + icon]"
        />
      </div>
    </template>

    <template #timelineEventContent="{ title, startDate, endDate }">
      <div>{{ title }} - {{ Math.round((endDate - startDate) / 36e5) }}h</div>
    </template>
  </MbscEventcalendar>
  <MbscToast :message="toastMessage" :isOpen="isToastOpen" @close="isToastOpen = false" />
</template>

<style>
.mds-timeline-cell-content .mbsc-timeline-day-fri::after {
  content: '';
  position: absolute;
  top: 0;
  bottom: 0;
  border-right: 1px solid var(--mbsc-eventcalendar-border-color);
}

.mds-timeline-cell-content .mbsc-timeline-day-fri.mbsc-ltr::after {
  left: 100%;
}

.mds-timeline-cell-content .mbsc-timeline-day-fri.mbsc-rtl::after {
  right: 100%;
}

.mds-timeline-cell-content .mbsc-timeline-events {
  top: 25px;
}

.mds-timeline-cell-content .mbsc-timeline-row-gutter {
  height: 55px;
}

.mds-timeline-cell-content .mbsc-timeline-column {
  width: 110px;
}

.mds-timeline-cell-content-badge {
  position: relative;
  top: 6px;
  left: 4px;
  display: inline-block;
  padding: 1px 4px;
  font-size: 13px;
  font-weight: 600;
  border-radius: 12px;
  max-width: 80px;
  color: black;
  background: #f9f9f9;
  overflow: hidden;
  z-index: 0;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.15);
}

.mds-timeline-cell-content-badge::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  height: 100%;
  transform: skewX(-15deg);
  z-index: -1;
}

.mds-timeline-cell-content-badge-light::before {
  width: 25%;
  background: #ff9c9c;
}

.mds-timeline-cell-content-badge-medium::before {
  width: 50%;
  background: #ffcf9f;
}

.mds-timeline-cell-content-badge-semi::before {
  width: 75%;
  background: #fff4a3;
}

.mds-timeline-cell-content-badge-full::before {
  width: 100%;
  background: #a3e4a1;
}

.mds-timeline-cell-content-add {
  opacity: 0;
  position: absolute;
  top: 6px;
  width: 17px;
  height: 17px;
  line-height: 13px;
  padding: 0;
  padding-bottom: 4px;
  color: #fff;
  border: none;
  border-radius: 50%;
  font-size: 22px;
  cursor: pointer;
  background: linear-gradient(135deg, rgb(73, 73, 73), rgb(22, 21, 21));
  transition: transform 0.2s ease;
}

.mbsc-timeline-column.mbsc-ltr .mds-timeline-cell-content-add {
  right: 4px;
}

.mbsc-timeline-column.mbsc-rtl .mds-timeline-cell-content-add {
  left: 4px;
}

.mbsc-timeline-column:hover .mds-timeline-cell-content-add {
  opacity: 1;
  pointer-events: auto;
}

.mds-timeline-cell-content-add:hover {
  outline: 3px solid rgba(140, 140, 140, 0.5);
}

.mds-timeline-cell-icons {
  position: absolute;
  inset: auto auto 4px auto;
}

.mds-timeline-cell-icon {
  text-align: center;
  padding: 2px 4px;
  margin: 0 3px;
  line-height: 17px !important;
  color: #000;
  background: rgba(255, 255, 255, 0.8);
  border-radius: 5px;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.2);
  font-size: 13px;
}
</style>

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