shoelace/docs/components/dialog.md

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# Dialog
[component-header:sl-dialog]
Dialogs, sometimes called "modals", appear above the page and require the user's immediate attention.
```html preview
<sl-dialog label="Dialog" class="dialog-overview">
Lorem ipsum dolor sit amet, consectetur adipiscing elit.
<sl-button slot="footer" type="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>
```
## 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.
```html preview
<sl-dialog label="Dialog" class="dialog-width" style="--width: 50vw;">
Lorem ipsum dolor sit amet, consectetur adipiscing elit.
<sl-button slot="footer" type="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>
```
### 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.
```html preview
<sl-dialog label="Dialog" class="dialog-scrolling">
<div style="height: 150vh; border: dashed 2px var(--sl-color-gray-200); padding: 0 1rem;">
<p>Scroll down and give it a try! 👇</p>
</div>
<sl-button slot="footer" type="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>
```
### Ignoring Clicks on the Overlay
By default, dialogs are closed when the user clicks or taps on the overlay. To prevent this behavior, cancel the `sl-overlay-dismiss` event.
```html preview
<sl-dialog label="Dialog" class="dialog-no-overlay-dismiss">
This dialog will not be closed when you click outside of it.
<sl-button slot="footer" type="primary">Close</sl-button>
</sl-dialog>
<sl-button>Open Dialog</sl-button>
<script>
(() => {
const dialog = document.querySelector('.dialog-no-overlay-dismiss');
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-overlay-dismiss', event => event.preventDefault());
})();
</script>
```
### Customizing Initial Focus
By default, the dialog's panel will gain focus when opened. To set focus on a different element, listen for the `sl-initial-focus` event.
```html preview
<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" type="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.setFocus({ preventScroll: true });
});
})();
</script>
```
[component-metadata:sl-dialog]