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Clarify that open state can be set to get default-opened behavior #236

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Dec 9, 2020
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Clarify that open state can be set to get default-opened behavior #236

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15 changes: 11 additions & 4 deletions research/src/pages/select/select.proposal.mdx
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Original file line number Diff line number Diff line change
Expand Up @@ -28,7 +28,7 @@ then select the appropriate one for you.

## &lt;select&gt; Properties <a href="#select-properties" id="select-properties"></a>

| Attribute Name | Type | Default Value | Description | |
| Property Name | Type | Default Value | Description | |
| ------------------------------------------------------------------------------------------------------- | ----------------------- | ------------------------------------- | -------------------------------------------------------------------------------------------------------------------------------------------------------- | --- |
| `autocomplete` | `string` | `off` | Allows the developer to provide a hint on how to search the content within the `<option>`(s) | |
| [`autofocus`](https://developer.mozilla.org/en-US/docs/Web/API/HTMLSelectElement/autofocus) | `bool` | `false` | If set to `true` the `input` will have focus set on page load | |
Expand All @@ -38,6 +38,7 @@ then select the appropriate one for you.
| `length` | `int` | `0` | The number of `<option>` elements in the `<select>` element | |
| `multiple` | `bool` | `false` | If set to true this will allow more than one `<option>` | |
| `name` | `string` | `null` | Represents the name of the control | |
| `open` | `bool` | `false` | A `boolean` that indicates whether the `<select>` is in the [`open`](#open-state) state | |
| [`options`](https://developer.mozilla.org/en-US/docs/Web/API/HTMLSelectElement/options) | `HTMLOptionsCollection` | | Returns a `HTMLOptionsCollection` of the `<option>` elements contained by the `<select>` element | |
| `required` | `bool` | `false` | A value must be provided for the control if set to `true` | |
| [`selectedIndex`](https://developer.mozilla.org/en-US/docs/Web/API/HTMLSelectElement/selectedIndex) | `int` | `-1` | The index of the first or last selected `<option>` element, depending on the value of `multiple` | |
Expand Down Expand Up @@ -184,12 +185,18 @@ and is therefore considered to be invalid.

**Default State**

- Show the currently selected `<option>` or the first `<option>`
- When the user invokes the `button` by:
- The `selected-value` part should show the currently selected `<option>` or the first `<option>`.
- The `listbox` part is not visible to the user.
- The state of the `<select>` is set to `open` when the user invokes the `button` by:
- a [pointerup](https://developer.mozilla.org/en-US/docs/Web/API/HTMLElement/pointerup_event) or
[click](https://developer.mozilla.org/en-US/docs/Web/API/Element/click_event) event is fired
- the user presses the `space` or `enter` key
- The state of the `<select>` is set to `open`

<p class="note">
If an author wants a &lt;select&gt; to be open by default, they can set the &lt;select&gt;'s
`open` property to true in the JavaScript responsible for initializing the component, or in HTML
set the &lt;select&gt;'s `open` boolean content attribute, which reflects the `open` property.
</p>

**Open State**

Expand Down