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docs(select): Update README to new format #2589

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merged 4 commits into from
Apr 24, 2018
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docs(select): Update README to new format #2589

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c79523a
docs(select): Update README to new format
Apr 18, 2018
2d5ef73
WIP Doc tweaks
Apr 23, 2018
124cd8f
Merge branch 'master' into feat/select/no-import-common
kfranqueiro Apr 24, 2018
8bf9b81
Merge branch 'master' into feat/select/no-import-common
kfranqueiro Apr 24, 2018
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88 changes: 54 additions & 34 deletions packages/mdc-select/README.md
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Original file line number Diff line number Diff line change
Expand Up @@ -35,9 +35,9 @@ browser's native `<select>` element. It is fully accessible, and fully RTL-aware
npm install @material/select
```

## Usage
## Basic Usage

### Using the full-fidelity JS component
### HTML Structure

```html
<div class="mdc-select">
Expand All @@ -58,7 +58,13 @@ npm install @material/select
</div>
```

Then with JS
### Styles

```scss
@import "@material/select/mdc-select";
```

### JavaScript Instantiation

```js
const select = new mdc.select.MDCSelect(document.querySelector('.mdc-select'));
Expand All @@ -69,12 +75,31 @@ select.listen('change', () => {

See [Importing the JS component](../../docs/importing-js.md) for more information on how to import JavaScript.

## Variants

### Select Box

The Select Box variant uses the same markup as the standard variant, with the addition of the `mdc-select--box`
modifier class on the root element.

```html
<div class="mdc-select mdc-select--box">
<select class="mdc-select__native-control">
...
</select>
<label class="mdc-floating-label">Pick a Food Group</label>
<div class="mdc-line-ripple"></div>
</div>
```

### Additional Information

#### Select with pre-selected option

When dealing with the select component that has pre-selected values, you'll want to ensure that you
render `mdc-floating-label` with the `mdc-floating-label--float-above` modifier class and the selected
option with the `selected` attribute. This will ensure that the label moves out
of the way of the select's value and prevents a Flash Of Unstyled Content (**FOUC**).
When dealing with a select component that has a pre-selected value, include the `mdc-floating-label--float-above`
modifier class on the `mdc-floating-label` element, and add the `selected` attribute to the selected option.
This will ensure that the label moves out of the way of the select's value and prevents a Flash Of Unstyled Content
(**FOUC**).

```html
<div class="mdc-select">
Expand All @@ -94,7 +119,7 @@ of the way of the select's value and prevents a Flash Of Unstyled Content (**FOU
</div>
```

#### Select with floating label as the placeholder
#### Using the floating label as the placeholder

By default, `<select>` elements will select their first enabled option. In order to initially display a placeholder
instead, add an initial `<option>` element with the `disabled` *and* `selected` attributes set, and with `value` set to `""`.
Expand All @@ -105,21 +130,13 @@ instead, add an initial `<option>` element with the `disabled` *and* `selected`

#### Disabled select

Add the `mdc-select--disabled` class to the `mdc-select` element and the `disabled` attribute to the
Add the `mdc-select--disabled` class to the `mdc-select` element, and add the `disabled` attribute to the
`<select>` element.

```html
<div class="mdc-select mdc-select--disabled">
<select class="mdc-select__native-control" disabled>
<option value="grains">
Bread, Cereal, Rice, and Pasta
</option>
<option value="vegetables">
Vegetables
</option>
<option value="fruit">
Fruit
</option>
...
</select>
<label class="mdc-floating-label">Pick a Food Group</label>
<div class="mdc-line-ripple"></div>
Expand Down Expand Up @@ -148,17 +165,20 @@ Since MDC Select uses native `<select>` and `<option>` elements, simply add the
</div>
```

## Style Customization

#### CSS Classes

| Class | Description |
| ------------------------ | ----------------------------------------------- |
| `mdc-select` | Mandatory. |
| `mdc-select--box` | Styles the select as a box select. |
| Class | Description |
| --- | --- |
| `mdc-select` | Mandatory. |
| `mdc-select--box` | Styles the select as a box select. |
| `mdc-select--disabled` | Styles the select as disabled. This class should be applied to the root element when the `disabled` attribute is applied to the `<select>` element. |
| `mdc-select__native-control` | Mandatory. The native `<select>` element. |

### Sass Mixins

To customize the colors of any part of the select, use the following mixins. We recommend you use
these mixins within CSS selectors like `.foo-select` to apply styling.
Mixins should be included in the context of a custom class applied to the component's root element, e.g. `.my-select`.

Mixin | Description
--- | ---
Expand All @@ -170,25 +190,25 @@ Mixin | Description
`mdc-select-focused-bottom-line-color($color)` | Customizes the color of the bottom line of the select when focused.
`mdc-select-hover-bottom-line-color($color)` | Customizes the color of the bottom line when select is hovered.

> NOTE: To further customize label color please see the [floating label readme](./../mdc-floating-label/README.md).
> NOTE: To further customize the floating label, please see the [floating label documentation](./../mdc-floating-label/README.md).

### MDC Select Component API
## `MDCSelect` API

The MDC Select component API is modeled after a subset of the `HTMLSelectElement` functionality, and
is outlined below.
The `MDCSelect` component API is modeled after a subset of the `HTMLSelectElement` functionality.

#### Properties

| Property Name | Type | Description |
| Property | Type | Description |
| --- | --- | --- |
| `value` | `string` | The `value` of the currently selected option. |
| `selectedIndex` | `number` | The index of the currently selected option. Set to -1 if no option is currently selected. Changing this property will update the select element. |
| `disabled` | `boolean` | Whether or not the component is disabled. Settings this sets the disabled state on the component. |

#### Events
### Events

The MDC Select JS component emits a `change` event when the selected option changes as the result of a user action.

## Usage within Web Frameworks

The MDC Select JS component emits a `change` event when the selected option changes as
the result of a user action.
If you are using a JavaScript framework, such as React or Angular, you can create a Select for your framework. Depending on your needs, you can use the _Simple Approach: Wrapping MDC Web Vanilla Components_, or the _Advanced Approach: Using Foundations and Adapters_. Please follow the instructions [here](../integrating-into-frameworks.md).

### `MDCSelectAdapter`

Expand Down