59 lines
1.8 KiB
Markdown
59 lines
1.8 KiB
Markdown
# Dialog >> Overview ||10
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A web component that wraps a modal dialog controller.
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Its purpose is to make it easy to use our Overlay System declaratively.
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```js script
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import { html } from '@mdjs/mdjs-preview';
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import '@lion/ui/define/lion-dialog.js';
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import { demoStyle } from './src/demoStyle.js';
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```
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```js preview-story
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export const main = () => html`
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<style>
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${demoStyle}
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</style>
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<lion-dialog>
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<button slot="invoker">Click me to open dialog</button>
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<div slot="content" class="demo-dialog-content">
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Hello! You can close this dialog here:
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<button
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class="demo-dialog-content__close-button"
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@click=${e => e.target.dispatchEvent(new Event('close-overlay', { bubbles: true }))}
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>
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⨯
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</button>
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</div>
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</lion-dialog>
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`;
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```
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## Features
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- Show content when clicking the invoker
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- Respond to close event in the slot="content" element, to close the content
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- Have a `.config` object to set or update the OverlayController's configuration
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## Installation
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```bash
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npm i --save @lion/ui
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```
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```js
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import { LionDialog } from '@lion/ui/dialog.js';
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// or
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import '@lion/ui/define/lion-dialog.js';
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```
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- To close the overlay from within the content node, you need to dispatch a `close-overlay` event that bubbles.
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It has to be able to reach the content node (if you need to traverse shadow boundaries, you will have to add `composed: true` as well).
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## Changing the configuration
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You can use the `.config` property on the dialog to change the configuration.
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The documentation of the full config object can be found in the `overlays` folder or here in [Overlay System - Configuration](../../fundamentals/systems/overlays/configuration.md).
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The `config` property uses a setter to merge the passed configuration with the current, so you only **overwrite what you pass** when updating `config`.
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