Add Snaps documentation for MetaMask Extension 12.6 updates (#1715)

* Add optional context param to snap_updateInterface This closes #1673 * Update API examples for interfaces to use JSX * Add Snaps Avatar component This closes #1701 * Update Address component This closes #1711 * Add 'valid' to avatar prop * Add min, max, and step props to Snaps Input component This fixes #1702 * Add size prop for Snaps Heading component This fixes #1703 * Add metamask scheme for Snaps Link component This fixes #1704 * Update Snaps Row component to include Link as a possible child Fixes #1705 * Add Address component to children of Snaps Link component Fixes #1706 * Update What's New Also fix a couple missing indents * Correct the metamask scheme URL for Snap home page Also clarify that it leads to the Snap's settings if it does not have a home page, and what to expect when testing. * Line breaks * Correct information for local metamask: URLs * edits --------- Co-authored-by: Alexandra Tran <[email protected]>
MetaMask · Nov 16, 2024 · 2fe6af6 · 2fe6af6
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diff --git a/docs/whats-new.md b/docs/whats-new.md
@@ -11,12 +11,13 @@ of the [MetaMask developer page](https://metamask.io/developer/).
 
 ## November 2024
 
+- Updated Snaps [Custom UI documentation](/snaps/features/custom-ui/) for MetaMask Extension version 12.6.
+  ([#1715](https://github.com/MetaMask/metamask-docs/pull/1715))
 - Added tutorial for
   [creating a simple Starknet dapp](/wallet/how-to/use-non-evm-networks/starknet/create-a-simple-starknet-dapp).
   ([#1656](https://github.com/MetaMask/metamask-docs/pull/1656))
 - Documented Snaps [`Card`](/snaps/features/custom-ui/#card) and [`Section`](/snaps/features/custom-ui/#section) UI components.
-  ([#1707](https://github.com/MetaMask/metamask-docs/pull/1707) and
-  [#1700](https://github.com/MetaMask/metamask-docs/pull/1700))
+  ([#1707](https://github.com/MetaMask/metamask-docs/pull/1707)) ([#1700](https://github.com/MetaMask/metamask-docs/pull/1700))
 
 ## October 2024
 

diff --git a/snaps/features/custom-ui/index.md b/snaps/features/custom-ui/index.md
@@ -3,6 +3,9 @@ description: Display custom user interface components using JSX.
 sidebar_position: 4
 ---
 
+import Tabs from "@theme/Tabs";
+import TabItem from "@theme/TabItem";
+
 # Custom UI
 
 You can display custom user interface (UI) JSX components using the
@@ -15,7 +18,9 @@ implementing the following features:
 - [Signature insights](../signature-insights.md)
 
 :::note
-JSX is supported in the MetaMask extension and Flask version 12 and later. New UI components will be added as JSX components. The previous function-based library is deprecated.
+JSX is supported in the MetaMask extension and Flask version 12 and later. 
+New UI components will be added as JSX components. 
+The previous function-based library is deprecated.
 :::
 
 To use custom UI, first install [`@metamask/snaps-sdk`](https://github.com/MetaMask/snaps/tree/main/packages/snaps-sdk)
@@ -27,7 +32,8 @@ yarn add @metamask/snaps-sdk
 
 Then, whenever you're required to return a custom UI component, import the components from the
 SDK at `@metamask/snaps-sdk/jsx` and build your UI with them.
-For example, to display a [`Box`](#box) using [`snap_dialog`](../../reference/snaps-api.md#snap_dialog):
+For example, to display a [`Box`](#box) using 
+[`snap_dialog`](../../reference/snaps-api.md#snap_dialog):
 
 ```javascript title="index.jsx"
 import { Box, Heading, Text } from "@metamask/snaps-sdk/jsx";
@@ -56,12 +62,21 @@ The following custom UI components are available:
 
 ### `Address`
 
-Outputs a formatted text field for an Ethereum address. 
-The address is automatically displayed with a jazzicon and truncated value. 
-Hovering the address shows the full value in a tooltip.
+Outputs a formatted text field for a blockchain address. 
+The address is automatically displayed with a [Jazzicon](https://www.npmjs.com/package/@metamask/jazzicon)
+and truncated value. 
+Hovering over the address shows the full value in a tooltip.
+
+#### Props 
+
+- `address`: `string` - A valid Ethereum address, starting with `0x`, or a valid 
+  [CAIP-10](https://github.com/ChainAgnostic/CAIPs/blob/main/CAIPs/caip-10.md) address.
 
 #### Example
 
+<Tabs>
+<TabItem value="Ethereum address">
+
 ```javascript title="index.jsx"
 import { Box, Heading, Address } from "@metamask/snaps-sdk/jsx";
 
@@ -88,6 +103,59 @@ await snap.request({
     </div>
 </div>
 
+</TabItem>
+<TabItem value="CAIP-10 address">
+
+```javascript title="index.jsx"
+import { Box, Heading, Address } from "@metamask/snaps-sdk/jsx";
+
+await snap.request({
+  method: "snap_dialog",
+  params: {
+    type: "alert",
+    content: (
+      <Box>
+        <Heading>The following is an Ethereum address</Heading>
+        <Address address="eip155:1:0x1234567890123456789012345678901234567890" />
+        <Heading>The following is a Bitcoin address</Heading>
+        <Address address="bip122:000000000019d6689c085ae165831e93:128Lkh3S7CkDTBZ8W7BbpsN3YYizJMp8p6" />
+      </Box>
+    ),
+  },
+});
+```
+
+</TabItem>
+</Tabs>
+
+### `Avatar`
+
+Outputs a [Jazzicon](https://www.npmjs.com/package/@metamask/jazzicon) for an address.
+
+:::note
+MetaMask automatically calculates checksums for EVM addresses (`eip155:`). 
+Addresses for other namespaces are not validated; you should validate them in your Snap.
+:::
+
+#### Props
+
+- `address`: `string` - A valid [CAIP-10](https://github.com/ChainAgnostic/CAIPs/blob/main/CAIPs/caip-10.md) address.
+
+#### Example
+
+```js
+export const onHomePage: OnHomePageHandler = async () => {
+  return {
+    content: (
+      <Box>
+        <Avatar address="eip155:1:0x1234567890123456789012345678901234567890" />
+        <Avatar address="bip122:000000000019d6689c085ae165831e93:128Lkh3S7CkDTBZ8W7BbpsN3YYizJMp8p6" />
+      </Box>
+    ),
+  };
+};
+```
+
 ### `Bold`
 
 Outputs bold text.
@@ -166,8 +234,8 @@ For use in [interactive UI](interactive-ui.md).
 - `type` - (Optional) The type of button.
   Possible values are `"button"` and `"submit"`.
   The default is `"button"`.
-- `name`: `string` - (Optional) The name that will be sent to [`onUserInput`](../../reference/entry-points.md#onuserinput)
-  when a user selects the button.
+- `name`: `string` - (Optional) The name that will be sent to 
+  [`onUserInput`](../../reference/entry-points.md#onuserinput) when a user selects the button.
 - `variant` - (Optional) Determines the appearance of the button.
   Possible values are `"primary"` and `"destructive"`.
   The default is `"primary"`.
@@ -209,7 +277,8 @@ Outputs a card component which is used to display values in a card structure.
 
 :::info
 Unlike many `Card` components from other UI libraries, the Snaps `Card` does not have any shape.
-It is only used for layout. To give a shape to a `Card`, wrap it in a [`Section`](#section) component.
+It is only used for layout. To give a shape to a `Card`, wrap it in a [`Section`](#section) 
+component.
 :::
 
 #### Props
@@ -305,7 +374,8 @@ Outputs a read-only text field with a copy-to-clipboard shortcut.
 #### Props
 
 - `value`: `string` - The value to copy when the user clicks on the copyable element.
-- `sensitive`: `boolean` - (Optional) Indicates whether the value is sensitive. If `true`, the value will be hidden when the user is not interacting with the copyable element.
+- `sensitive`: `boolean` - (Optional) Indicates whether the value is sensitive. If `true`, the 
+  value will be hidden when the user is not interacting with the copyable element.
 
 #### Example
 
@@ -412,9 +482,11 @@ Outputs a form field, wrapping an element to give it a label and optional error.
 #### Props
 
 - `label`: `string` - The label for the wrapped element.
-- `error`: `string` - (Optional) Any error for the wrapped element. Setting this changes the style of the wrapped element to show that there is an error.
+- `error`: `string` - (Optional) Any error for the wrapped element. Setting this changes the style 
+  of the wrapped element to show that there is an error.
 - `children` - The element to be wrapped.
-  This can be a [`Dropdown`](#dropdown), [`Input`](#input), [`Selector`](#selector), or [`RadioGroup`](#radiogroup) component.
+  This can be a [`Dropdown`](#dropdown), [`Input`](#input), [`Selector`](#selector), or 
+  [`RadioGroup`](#radiogroup) component.
 
 #### Example
 
@@ -508,8 +580,8 @@ Outputs a form for use in [interactive UI](interactive-ui.md).
 
 #### Props
 
-- `name`: `string` - The name that will be sent to [`onUserInput`](../../reference/entry-points.md#onuserinput)
-  when a user interacts with the form.
+- `name`: `string` - The name that will be sent to 
+  [`onUserInput`](../../reference/entry-points.md#onuserinput) when a user interacts with the form.
 - `children`: `array` - An array of [`Input`](#input) or [`Button`](#button) components.
 
 #### Example
@@ -549,6 +621,11 @@ await snap.request({
 Outputs a heading.
 This is useful for [`Box`](#box) titles.
 
+#### Props
+
+- `size`: `string` - (Optional) The size of the heading. Possible values are `"sm"`, `"md"`, and 
+  `"lg"`. The default is `"sm"`.
+
 #### Example
 
 ```javascript title="index.jsx"
@@ -616,7 +693,8 @@ This component takes an inline SVG.
 It does not support remote URLs.
 
 You can import SVG, PNG, and JPEG files using an import statement.
-These files are automatically imported as SVG strings, so you can pass them directly to the `Image` component.
+These files are automatically imported as SVG strings, so you can pass them directly to the 
+`Image` component.
 
 The SVG is rendered within an `<img>` tag, which prevents JavaScript or interaction events from
 being supported.
@@ -667,13 +745,20 @@ Outputs an input component for use in [interactive UI](interactive-ui.md).
 #### Props
 
 - `name`: `string` - The name that will be used as a key to the event sent to
-  [`onUserInput`](../../reference/entry-points.md#onuserinput) when the containing form is submitted.
+  [`onUserInput`](../../reference/entry-points.md#onuserinput) when the containing form is 
+  submitted.
 - `type` - (Optional) The type of input.
   Possible values are `"text"`, `"number"`, and `"password"`.
   The default is `"text"`.
 - `placeholder`: `string` - (Optional) The text displayed when the input is empty.
 - `label`: `string` - (Optional) The text displayed alongside the input to label it.
 - `value`: `string` - (Optional) The default value of the input.
+- `min`: `string` - (Optional) The minimum value of the input field. Only applicable to the input
+  type `"number"`.
+- `max`: `string` - (Optional) The maximum value of the input field. Only applicable to the input 
+  type `"number"`.
+- `step`: `string` - (Optional) The step value of the input field. Only applicable to the input
+  type `"number"`.
 
 #### Example
 
@@ -738,8 +823,28 @@ Outputs a clickable link.
 
 #### Props
 
-- `href`: `string` - The URL to point to. Supported schemes are `https:` and `mailto:`. `http:` is not allowed.
-- `children`: `Array<string | Bold | Italic>` - The link text.
+- `href`: `string` - The URL to point to. Supported schemes are `https:`, `mailto:`, and 
+  `metamask:`. `http:` is not allowed.
+- `children`: `Array<string | Bold | Italic | Address>` - The link text, or an 
+  [`Address`](#address).
+
+#### About `metamask:` URLs
+
+A Snap can link to the following screens using the `metamask:` scheme: 
+
+- `metamask://client/` - Leads to the main screen of MetaMask.
+- `metamask://snap/[Snap ID]/home/` - Leads to the Snap's 
+  [home page](../custom-ui/home-pages.md), or the Snap's settings page if it does not have a home 
+  page. Valid Snap IDs are npm IDs beginning with `npm:`, such as 
+  `metamask://snap/npm:@consensys/starknet-snap/home`, or `local:`, such as 
+  `metamask://snap/local:http://localhost:8080/home`. Consider using 
+  [environment variables](../../how-to/use-environment-variables.md) so you can have different 
+  Snap IDs for local testing and production.
+
+:::warning
+MetaMask will throw an error if the URL is not valid or if the URL leads to a Snap that is not 
+installed. 
+:::
 
 #### Example
 
@@ -813,8 +918,8 @@ Outputs a row with a label and value, which can be used for key-value data.
 - `variant` - (Optional) The variant of the label.
   Possible values are `"default"`, `"error"`, and `"warning"`.
   The default is `"default"`.
-- `children` - The value of the row, which can be a [`Text`](#text), [`Image`](#image), or
-  [`Address`](#address) component.
+- `children` - The value of the row, which can be a [`Text`](#text), [`Image`](#image), 
+  [`Address`](#address), or [`Link`](#link) component.
 
 #### Example
 

diff --git a/snaps/reference/snaps-api.md b/snaps/reference/snaps-api.md
@@ -914,13 +914,12 @@ The interface's ID to be used in [`snap_dialog`](#snap_dialog), returned from
 const interfaceId = await snap.request({
   method: "snap_createInterface",
   params: {
-    ui: panel([
-      heading("Interactive interface"),
-      button({
-        value: "Click me",
-        name: "interactive-button",
-      }),
-    ]),
+    ui: ( 
+      <Box>
+        <Heading>Interactive interface</Heading>
+        <Button name="interactive-button">Click me</Button>
+      </Box>
+    )
   },
 })
 
@@ -956,26 +955,16 @@ An object where each top-level property can be one of the following:
 const interfaceId = await snap.request({
   method: "snap_createInterface",
   params: {
-    ui: panel([
-      heading("Interactive UI Example Snap"),
-      // A top-level input.
-      input({
-        name: "top-level-input",
-        placeholder: "Enter something",
-      }),
-      // A top-level form...
-      form({
-        name: "example-form",
-        children: [
-          // ...with a nested input.
-          input({
-            name: "nested-input",
-            placeholder: "Enter something",
-          }),
-          button("Submit", ButtonType.Submit, "submit"),
-        ],
-      }),
-    ]),
+    ui: (
+      <Box>
+        <Heading>Interactive UI Example Snap</Heading>
+        <Input name="top-level-input" placeholder="Enter something"/>
+        <Form name="example-form">
+          <Input name="nested-input" placeholder="Enter something"/>
+          <Button type="submit">Submit</Button>
+        </Form>
+      </Box>
+    )
   },
 })
 
@@ -1025,6 +1014,7 @@ An object containing:
 - `id` - The ID of the interface to be updated, usually received in the
   [`onUserInput`](./entry-points.md#onuserinput) entry point.
 - `ui` - The [custom UI](../features/custom-ui/index.md) to create.
+- `context` - (Optional) A custom context object that will be passed to [`onUserInput`](./entry-points.md#onuserinput) when the user interacts with the interface. Passing this parameter will update the context object for the interface. 
 
 #### Example
 
@@ -1036,9 +1026,12 @@ export function onUserInput({ id, event }) {
     method: "snap_updateInterface",
     params: {
       id,
-      ui: panel([
-        heading("New interface"),
-      ]),
+      ui: (
+        <Box>
+          <Heading>New interface</Heading>
+          <Text>This interface has been updated</Text>
+        </Box>
+      )
     },
   });
 };