Dialog

Versatile Dialog component for displaying modals (centered) or drawers (side, top/bottom, full screen). It is built on the native <dialog> element opened with showModal(): the browser handles the top layer, the backdrop (::backdrop), making the rest of the page inert and keeping focus inside. It offers customization options to adapt to various use cases.

Usage examples

Centered Modal (display="center")

Confirmation Modal

<script setup>
import { ref } from 'vue'

const showCenterModal = ref(false)
</script>

<template>
  <SuButton @click="showCenterModal = true">Open Modal</SuButton>
  <SuDialog v-model:modelValue="showCenterModal" display="center" title="Confirmation" description="Do you really want to delete this item?" width="400px">
    <template #default>
      <p>This action is irreversible. Please confirm your choice.</p>
    </template>
    <template #footer>
      <SuButton variant="secondary" @click="showCenterModal = false">Cancel</SuButton>
      <SuButton variant="primary" @click="showCenterModal = false">Confirm</SuButton>
    </template>
  </SuDialog>
</template>

Left Side Drawer (display="left")

Side Menu

<script setup>
import { ref } from 'vue'

const showLeftDrawer = ref(false)
</script>

<template>
  <SuButton @click="showLeftDrawer = true">Open Left Drawer</SuButton>
  <SuDialog v-model:modelValue="showLeftDrawer" display="left" title="Navigation Menu" width="300px">
    <template #default>
      <SuLinkGroup direction="vertical" gap="md">
        <SuLink href="/dashboard">Dashboard</SuLink>
        <SuLink href="/profile">My Profile</SuLink>
        <SuLink href="/settings">Settings</SuLink>
        <SuLink href="/logout">Logout</SuLink>
      </SuLinkGroup>
    </template>
    <template #footer>
      <SuButton variant="outline" @click="showLeftDrawer = false">Close</SuButton>
    </template>
  </SuDialog>
</template>

Right Side Drawer (display="right")

Product Details Panel

<script setup>
import { ref } from 'vue'

const showRightDrawer = ref(false)
</script>

<template>
  <SuButton @click="showRightDrawer = true">Open Right Drawer</SuButton>
  <SuDialog v-model:modelValue="showRightDrawer" display="right" title="Product Details" width="450px">
    <template #default>
      <h3>Product X</h3>
      <p>Detailed description of Product X. Lorem ipsum dolor sit amet, consectetur adipiscing elit.</p>
      <img src="https://via.placeholder.com/300x200" alt="Product X" style="max-width: 100%; height: auto; margin-top: 1rem;">
    </template>
    <template #footer>
      <SuButton variant="primary" @click="showRightDrawer = false">Add to Cart</SuButton>
    </template>
  </SuDialog>
</template>

Top Drawer (display="top")

Notification Bar

<script setup>
import { ref } from 'vue'

const showTopDrawer = ref(false)
</script>

<template>
  <SuButton @click="showTopDrawer = true">Open Top Drawer</SuButton>
  <SuDialog v-model:modelValue="showTopDrawer" display="top" title="New Notification" height="100px">
    <template #default>
      <p>You have 3 new unread messages!</p>
    </template>
    <template #footer>
      <SuButton variant="primary" @click="showTopDrawer = false">View Messages</SuButton>
    </template>
  </SuDialog>
</template>

Bottom Drawer (display="bottom")

Quick Actions

<script setup>
import { ref } from 'vue'

const showBottomDrawer = ref(false)
</script>

<template>
  <SuButton @click="showBottomDrawer = true">Open Bottom Drawer</SuButton>
  <SuDialog v-model:modelValue="showBottomDrawer" display="bottom" title="Quick Actions" height="250px">
    <template #default>
      <SuButtonGroup direction="vertical" gap="md">
        <SuButton variant="primary">Take Photo</SuButton>
        <SuButton variant="secondary">Upload File</SuButton>
        <SuButton variant="outline">Share</SuButton>
      </SuButtonGroup>
    </template>
    <template #footer>
      <SuButton variant="ghost" @click="showBottomDrawer = false">Close</SuButton>
    </template>
  </SuDialog>
</template>

Full Screen (display="full")

Complex Form

<script setup>
import { ref } from 'vue'

const showFullScreen = ref(false)
</script>

<template>
  <SuButton @click="showFullScreen = true">Open Full Screen</SuButton>
  <SuDialog v-model:modelValue="showFullScreen" display="full" title="Complete Registration Form">
    <template #default>
      <SuFormFields gap="lg" sectionGap="xl">
        <SuInput label="Full Name" placeholder="Your name" required />
        <SuInput type="email" label="Email" placeholder="your@example.com" required />
        <SuPassword label="Password" showProgress required />
        <SuTextarea label="Bio" placeholder="Tell us about yourself..." autoResize maxLength="500" showCounter />
        <SuFileUpload label="Profile Picture" accept="image/*" />
      </SuFormFields>
    </template>
    <template #footer>
      <SuButton variant="secondary" @click="showFullScreen = false">Cancel</SuButton>
      <SuButton variant="primary">Submit</SuButton>
    </template>
  </SuDialog>
</template>

API

Props

Prop	Type	Default	Description
modelValue	boolean	false	Controls the open/close state of the Dialog (used with v-model)
display	'center' | 'left' | 'right' | 'top' | 'bottom' | 'full'	'center'	Display mode of the Dialog
title	string	undefined	Title of the Dialog (displayed in the head slot by default and for aria-labelledby)
description	string	undefined	Description shown under the title and linked to the Dialog with aria-describedby (not rendered when the head slot is used)
closeLabel	string	'Fermer'	Accessible name of the close button
closeOnOverlayClick	boolean	true	Allows closing the Dialog by clicking on the overlay
closeOnEscape	boolean	true	Allows closing the Dialog with the Escape key
width	string	auto	Custom width of the Dialog (e.g., '500px', '80%')
height	string	auto	Custom height of the Dialog (e.g., '400px', '90vh')
zIndex	number	—	Deprecated, no effect: the Dialog renders in the browser top layer, above any z-index
disableScroll	boolean	true	Disables page body scrolling when the Dialog is open

Accessibility Attributes

Prop	Type	Default	Description
ariaLabel	string	undefined	Accessible label for the Dialog
ariaLabelledBy	string	undefined	ID of the element that labels the Dialog (takes precedence over title)
ariaDescribedBy	string	undefined	ID of the element that describes the Dialog (takes precedence over description)

Events

Event	Type	Description
update:modelValue	(value: boolean) => void	Emitted when the open/close state changes
open	() => void	Emitted when the Dialog is opened
close	() => void	Emitted when the Dialog is closed

Slots

Slot	Description
head	Content for the Dialog header (can contain a title, close button, etc.)
default	Main content of the Dialog
footer	Content for the Dialog footer (often used for action buttons)

Accessibility

The Dialog component is designed to comply with WCAG 2.1 AA standards:

✅ Accessibility Features

• Native dialog: a <dialog> opened with showModal() has the dialog role and is modal for assistive technologies (the rest of the page becomes inert).
• Focus Management: the browser keeps focus inside the Dialog while it is open; no JavaScript focus trap.
• Initial Focus: Focus is automatically moved to the first focusable element within the Dialog upon opening.
• Focus Restoration: Focus is restored to the element that triggered the Dialog's opening after it closes.
• Labels and Descriptions: Uses aria-labelledby (via the title prop or ariaLabelledBy) and aria-describedby (via the description prop or ariaDescribedBy) to provide semantic context to screen readers.
• Accessible Closing: Escape fires the native cancel event, which closes the Dialog when closeOnEscape is true. With several Dialogs open, only the top one closes.
• Scroll Disablement: page scrolling is locked in CSS (:root:has(...)) while a Dialog with disableScroll is open, including nested Dialogs.
• Smooth Transitions: Animations are designed to be smooth and respect prefers-reduced-motion.

🎯 Best Practices

• Always provide a title or ariaLabel: This is crucial for accessibility so that screen reader users understand the purpose of the Dialog.
• Place primary actions in the footer: This helps with UI consistency and predictability.
• Avoid nested Dialogs: If possible, design your UI to avoid opening one Dialog on top of another, as this can complicate focus management and user experience.

Keyboard Navigation

Key	Action
Tab	Navigate between focusable elements inside the Dialog
Shift + Tab	Navigate between focusable elements in reverse order
Escape	Close the Dialog (if closeOnEscape is true)

Styling and Customization

The Dialog component uses CSS transitions for smooth opening and closing. The display prop applies specific styles to position the Dialog correctly.

• display="center": Centered modal, with a scale animation.
• display="left" / display="right": Side drawers, with a horizontal translation animation.
• display="top" / display="bottom": Vertical drawers, with a vertical translation animation.
• display="full": Full screen, with a slight scale animation.

You can customize the width (width) and height (height) for center, left, right, top, bottom modes. For full mode, the Dialog always occupies 100% of the width and height.