> ## Documentation Index
> Fetch the complete documentation index at: https://docs.stac.dev/llms.txt
> Use this file to discover all available pages before exploring further.

# SliverToBoxAdapter

> A sliver that contains a single box widget.

export const PLAYGROUND_BASE_URL = "https://playground.stac.dev/";

export const sliverToBoxAdapterPreviewJson = {
  "type": "sliverPadding",
  "padding": 16,
  "sliver": {
    "type": "sliverToBoxAdapter",
    "child": {
      "type": "container",
      "height": 150,
      "color": "#4CAF50",
      "child": {
        "type": "center",
        "child": {
          "type": "text",
          "data": "I am a Box inside a SliverToBoxAdapter!",
          "style": {
            "color": "#FFFFFF",
            "fontWeight": "bold"
          }
        }
      }
    }
  }
};
export const sliverToBoxAdapterPreviewSrc = `${PLAYGROUND_BASE_URL}/embed`;

The Stac SliverToBoxAdapter allows you to build a Flutter sliver-to-box-adapter widget using JSON. It creates a sliver that contains a single box widget.
To know more about the sliver-to-box-adapter widget in Flutter, refer to
the [official documentation](https://api.flutter.dev/flutter/widgets/SliverToBoxAdapter-class.html).

## Properties

| Property | Type                    | Description                          |
| -------- | ----------------------- | ------------------------------------ |
| child    | `Map<String, dynamic>?` | The widget contained by this sliver. |

## Example

<Tabs sync={false}>
  <Tab title="Dart">
    ```dart theme={null}
    StacSliverPadding(
      padding: StacEdgeInsets.all(16),
      sliver: StacSliverToBoxAdapter(
        child: StacContainer(
          height: 150,
          color: StacColors.green,
          child: StacCenter(
            child: StacText(
              data: 'I am a Box inside a SliverToBoxAdapter!',
              style: StacTextStyle(color: StacColors.white, fontWeight: StacFontWeight.bold),
            ),
          ),
        ),
      ),
    )
    ```
  </Tab>

  <Tab title="JSON">
    ```json theme={null}
    {
      "type": "sliverPadding",
      "padding": 16,
      "sliver": {
        "type": "sliverToBoxAdapter",
        "child": {
          "type": "container",
          "height": 150,
          "color": "#4CAF50",
          "child": {
            "type": "center",
            "child": {
              "type": "text",
              "data": "I am a Box inside a SliverToBoxAdapter!",
              "style": {
                "color": "#FFFFFF",
                "fontWeight": "bold"
              }
            }
          }
        }
      }
    }
    ```
  </Tab>

  <Tab title="Preview">
    <Frame>
      <iframe
        id="stac"
        src={sliverToBoxAdapterPreviewSrc}
        title="Stac Playground"
        className="w-full rounded-xl border-0"
        style={{ height: "640px" }}
        loading="lazy"
        onLoad={(event) => {
      const iframe = event.currentTarget;
      const targetOrigin = PLAYGROUND_BASE_URL;
      const message = {
        type: "stac-preview-json",
        payload: sliverToBoxAdapterPreviewJson
      };

      let attempts = 0;
      const maxAttempts = 12;
      const interval = setInterval(() => {
        iframe.contentWindow?.postMessage(message, targetOrigin);
        attempts += 1;

        if (attempts >= maxAttempts) {
          clearInterval(interval);
        }
      }, 250);
    }}
      />
    </Frame>
  </Tab>
</Tabs>