Dialog

Dialog provides a modal surface with headline, body, icon, and action slots built on the native <dialog> element.

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Anatomy

Highlight

Element	Part	Selector
<dialog>	root	[data-scope="dialog"][data-part="root"] left_clickLMBCopy
<div>	surface	[data-scope="dialog"][data-part="surface"] left_clickLMBCopy
<div>	iconconditional	[data-scope="dialog"][data-part="icon"] left_clickLMBCopy
<h2>	headlineconditional	[data-scope="dialog"][data-part="headline"] left_clickLMBCopy
<div>	contentconditional	[data-scope="dialog"][data-part="content"] left_clickLMBCopy
<div>	actionsconditional	[data-scope="dialog"][data-part="actions"] left_clickLMBCopy

Props

Name	Description	Default	Control
closeOnBackdropOptional	Whether clicking the backdrop closes the dialog. boolean | undefined	true	check
widthOptional	Dialog surface width. Such as '28rem'. string | undefined	undefined
openOptional	- boolean | undefined	false

Events3

Name	Type	Description
close	[returnValue: string]	-
update:open	[value: boolean]	-
cancel	[event: Event]	-

Slots4

Name	Parameters	Description
icon	-	Optional leading icon content.
headline	-	Optional dialog headline.
default	-	Supporting text or custom body content.
actions	-	Action buttons row.

Styling26

Preview

Token	Description
--md-dialog-action-label-text-colorColor Fallbackvar(--md-sys-color-primary)	Controls action label text color.
--md-dialog-action-label-text-fontTypography Fallbackvar(--md-sys-typescale-label-large-font)	Controls action label text font.
--md-dialog-action-label-text-line-heightTypography Fallbackvar(--md-sys-typescale-label-large-line-height)	Controls action label text line height.
--md-dialog-action-label-text-sizeLayout Fallbackvar(--md-sys-typescale-label-large-size)	Controls action label text size.
--md-dialog-action-label-text-trackingTypography Fallbackvar(--md-sys-typescale-label-large-tracking)	Controls action label text tracking.
--md-dialog-action-label-text-typeTypography Fallbackvar(--md-sys-typescale-label-large)	Controls action label text type.
--md-dialog-action-label-text-weightTypography Fallbackvar(--md-sys-typescale-label-large-weight)	Controls action label text weight.
--md-dialog-container-colorColor Fallbackvar(--md-sys-color-surface-container-high)	Controls container color.
--md-dialog-container-elevationElevation Fallbackvar(--md-sys-elevation-level3)	Controls container elevation.
--md-dialog-container-shapeShape Fallbackvar(--md-shape-overlay)	Controls container shape.
--md-dialog-headline-colorColor Fallbackvar(--md-sys-color-on-surface)	Controls headline color.
--md-dialog-headline-fontTypography Fallbackvar(--md-sys-typescale-headline-small-font)	Controls headline font.
--md-dialog-headline-line-heightTypography Fallbackvar(--md-sys-typescale-headline-small-line-height)	Controls headline line height.
--md-dialog-headline-sizeLayout Fallbackvar(--md-sys-typescale-headline-small-size)	Controls headline size.
--md-dialog-headline-trackingTypography Fallbackvar(--md-sys-typescale-headline-small-tracking)	Controls headline tracking.
--md-dialog-headline-typeTypography Fallbackvar(--md-sys-typescale-headline-small)	Controls headline type.
--md-dialog-headline-weightTypography Fallbackvar(--md-sys-typescale-headline-small-weight)	Controls headline weight.
--md-dialog-supporting-text-colorColor Fallbackvar(--md-sys-color-on-surface-variant)	Controls supporting text color.
--md-dialog-supporting-text-fontTypography Fallbackvar(--md-sys-typescale-body-medium-font)	Controls supporting text font.
--md-dialog-supporting-text-line-heightTypography Fallbackvar(--md-sys-typescale-body-medium-line-height)	Controls supporting text line height.
--md-dialog-supporting-text-sizeLayout Fallbackvar(--md-sys-typescale-body-medium-size)	Controls supporting text size.
--md-dialog-supporting-text-trackingTypography Fallbackvar(--md-sys-typescale-body-medium-tracking)	Controls supporting text tracking.
--md-dialog-supporting-text-typeTypography Fallbackvar(--md-sys-typescale-body-medium)	Controls supporting text type.
--md-dialog-supporting-text-weightTypography Fallbackvar(--md-sys-typescale-body-medium-weight)	Controls supporting text weight.
--md-dialog-with-icon-icon-colorColor Fallbackvar(--md-sys-color-secondary)	Controls with icon icon color.
--md-dialog-with-icon-icon-sizeLayout Fallback1.5rem	Controls with icon icon size.

Width

Use the width prop for the dialog surface width.

<Dialog width="28rem" />

For stylesheet-level customization, set --md-dialog-container-width on the Dialog root. The root native <dialog> remains fullscreen so backdrop clicks and modal positioning keep working, while the token controls the inner surface.

<Dialog class="wide-dialog" />

.wide-dialog {
  --md-dialog-container-width: 40rem;
}

Examples

Default

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