shoelace/docs/components/dialog.md

Dialog

[component-header:sl-dialog]

Dialogs, sometimes called "modals", appear above the page and require the user's immediate attention.

<sl-dialog label="Dialog" class="dialog-overview">
  Lorem ipsum dolor sit amet, consectetur adipiscing elit.
  <sl-button slot="footer" variant="primary">Close</sl-button>
</sl-dialog>

<sl-button>Open Dialog</sl-button>

<script>
  const dialog = document.querySelector('.dialog-overview');
  const openButton = dialog.nextElementSibling;
  const closeButton = dialog.querySelector('sl-button[slot="footer"]');

  openButton.addEventListener('click', () => dialog.show());
  closeButton.addEventListener('click', () => dialog.hide());
</script>

import { useState } from 'react';
import { SlButton, SlDialog } from '@shoelace-style/shoelace/dist/react';

const App = () => {
  const [open, setOpen] = useState(false);

  return (
    <>
      <SlDialog label="Dialog" open={open} onSlAfterHide={() => setOpen(false)}>
        Lorem ipsum dolor sit amet, consectetur adipiscing elit.
        <SlButton slot="footer" variant="primary" onClick={() => setOpen(false)}>
          Close
        </SlButton>
      </SlDialog>

      <SlButton onClick={() => setOpen(true)}>Open Dialog</SlButton>
    </>
  );
};

UX Tips

• Use a dialog when you immediately require the user's attention, e.g. confirming a destructive action.
• Always provide an obvious way for the user to dismiss the dialog.
• Don't nest dialogs. It almost always leads to a poor experience for the user.

Examples

Custom Width

Use the --width custom property to set the dialog's width.

<sl-dialog label="Dialog" class="dialog-width" style="--width: 50vw;">
  Lorem ipsum dolor sit amet, consectetur adipiscing elit.
  <sl-button slot="footer" variant="primary">Close</sl-button>
</sl-dialog>

<sl-button>Open Dialog</sl-button>

<script>
  const dialog = document.querySelector('.dialog-width');
  const openButton = dialog.nextElementSibling;
  const closeButton = dialog.querySelector('sl-button[slot="footer"]');

  openButton.addEventListener('click', () => dialog.show());
  closeButton.addEventListener('click', () => dialog.hide());
</script>

import { useState } from 'react';
import { SlButton, SlDialog } from '@shoelace-style/shoelace/dist/react';

const App = () => {
  const [open, setOpen] = useState(false);

  return (
    <>
      <SlDialog label="Dialog" open={open} style={{ '--width': '50vw' }} onSlAfterHide={() => setOpen(false)}>
        Lorem ipsum dolor sit amet, consectetur adipiscing elit.
        <SlButton slot="footer" variant="primary" onClick={() => setOpen(false)}>
          Close
        </SlButton>
      </SlDialog>

      <SlButton onClick={() => setOpen(true)}>Open Dialog</SlButton>
    </>
  );
};

Scrolling

By design, a dialog's height will never exceed that of the viewport. As such, dialogs will not scroll with the page ensuring the header and footer are always accessible to the user.

<sl-dialog label="Dialog" class="dialog-scrolling">
  <div style="height: 150vh; border: dashed 2px var(--sl-color-neutral-200); padding: 0 1rem;">
    <p>Scroll down and give it a try! 👇</p>
  </div>
  <sl-button slot="footer" variant="primary">Close</sl-button>
</sl-dialog>

<sl-button>Open Dialog</sl-button>

<script>
  const dialog = document.querySelector('.dialog-scrolling');
  const openButton = dialog.nextElementSibling;
  const closeButton = dialog.querySelector('sl-button[slot="footer"]');

  openButton.addEventListener('click', () => dialog.show());
  closeButton.addEventListener('click', () => dialog.hide());
</script>

import { useState } from 'react';
import { SlButton, SlDialog } from '@shoelace-style/shoelace/dist/react';

const App = () => {
  const [open, setOpen] = useState(false);

  return (
    <>
      <SlDialog label="Dialog" open={open} onSlAfterHide={() => setOpen(false)}>
        <div
          style={{
            height: '150vh',
            border: 'dashed 2px var(--sl-color-neutral-200)',
            padding: '0 1rem'
          }}
        >
          <p>Scroll down and give it a try! 👇</p>
        </div>

        <SlButton slot="footer" variant="primary" onClick={() => setOpen(false)}>
          Close
        </SlButton>
      </SlDialog>

      <SlButton onClick={() => setOpen(true)}>Open Dialog</SlButton>
    </>
  );
};

Preventing the Dialog from Closing

By default, dialogs will close when the user clicks the close button, clicks the overlay, or presses the Escape key. In most cases, the default behavior is the best behavior in terms of UX. However, there are situations where this may be undesirable, such as when data loss will occur.

To keep the dialog open in such cases, you can cancel the sl-request-close event. When canceled, the dialog will remain open and pulse briefly to draw the user's attention to it.

<sl-dialog label="Dialog" class="dialog-deny-close">
  This dialog will not close unless you use the button below.
  <sl-button slot="footer" variant="primary">Save &amp; Close</sl-button>
</sl-dialog>

<sl-button>Open Dialog</sl-button>

<script>
  const dialog = document.querySelector('.dialog-deny-close');
  const openButton = dialog.nextElementSibling;
  const saveButton = dialog.querySelector('sl-button[slot="footer"]');

  openButton.addEventListener('click', () => dialog.show());
  saveButton.addEventListener('click', () => dialog.hide());

  dialog.addEventListener('sl-request-close', event => event.preventDefault());
</script>

import { useState } from 'react';
import { SlButton, SlDialog } from '@shoelace-style/shoelace/dist/react';

const App = () => {
  const [open, setOpen] = useState(false);

  return (
    <>
      <SlDialog
        label="Dialog"
        open={open}
        onSlRequestClose={event => event.preventDefault()}
        onSlAfterHide={() => setOpen(false)}
      >
        This dialog will not close unless you use the button below.
        <SlButton slot="footer" variant="primary" onClick={() => setOpen(false)}>
          Save &amp; Close
        </SlButton>
      </SlDialog>

      <SlButton onClick={() => setOpen(true)}>Open Dialog</SlButton>
    </>
  );
};

Customizing Initial Focus

By default, the dialog's panel will gain focus when opened. This allows a subsequent tab press to focus on the first tabbable element within the dialog. To set focus on a different element, listen for and cancel the sl-initial-focus event.

<sl-dialog label="Dialog" class="dialog-focus">
  <sl-input placeholder="I will have focus when the dialog is opened"></sl-input>
  <sl-button slot="footer" variant="primary">Close</sl-button>
</sl-dialog>

<sl-button>Open Dialog</sl-button>

<script>
  const dialog = document.querySelector('.dialog-focus');
  const input = dialog.querySelector('sl-input');
  const openButton = dialog.nextElementSibling;
  const closeButton = dialog.querySelector('sl-button[slot="footer"]');

  openButton.addEventListener('click', () => dialog.show());
  closeButton.addEventListener('click', () => dialog.hide());

  dialog.addEventListener('sl-initial-focus', event => {
    event.preventDefault();
    input.focus({ preventScroll: true });
  });
</script>

import { useRef, useState } from 'react';
import { SlButton, SlDialog, SlInput } from '@shoelace-style/shoelace/dist/react';

const App = () => {
  const input = useRef(null);
  const [open, setOpen] = useState(false);

  function handleInitialFocus(event) {
    event.preventDefault();
    input.current.focus();
  }

  return (
    <>
      <SlDialog label="Dialog" open={open} onSlInitialFocus={handleInitialFocus} onSlAfterHide={() => setOpen(false)}>
        <SlInput ref={input} placeholder="I will have focus when the dialog is opened" />
        <SlButton slot="footer" variant="primary" onClick={() => setOpen(false)}>
          Close
        </SlButton>
      </SlDialog>

      <SlButton onClick={() => setOpen(true)}>Open Dialog</SlButton>
    </>
  );
};

[component-metadata:sl-dialog]