InputText
=========

A text input field widget.

## General info

- **type**: `input-text`

## Params

- `placeholder` - a string that is displayed as a hint. By default, this is an empty string.
- `label` - a string that is used as a label of the widget. By default, this is an empty string.
- `supportText` - an optional string. By default, this is an empty string.
- `defaultValue` - the default value of the widget, either a string or number. By default, this is an empty string.
- `type` - the widget type, either `"number"` or `"text"`. The default value is `"text"`.
- `maxLength` - the max text length. For numbers, `maxLength` defines the number of digits and only works with positive values.
- `min` and `max` - the allowed range of values of the `number` type. The default values are `-999999` and `999999`.
- `isTextArea` - if `true`, enables a text area instead of single-line text. The default value is `false`.
- `rows` - the widget height in rows if the text area mode is on. The default value is `2`.
- `pattern` - a regular expression to limit input. The default value is `".+"`.

## Events

- `onChange` - a function (`"{{#function <expression>}}"`) or an array of functions. This event triggers when the user changes the text in the widget.

## Referring to a value in the config

You may refer to a value of a widget by using the `value` or `_` shortcut:

``` json
{
    "text": "{{$['main-text']._}}"
}
```

## Example
``` json
  {
      "name": "main-text",
      "type": "input-text",
      "params": {
          "isTextArea": true,
          "defaultValue": "Hello world",
          "prompt": "Enter your text",
          "maxLength": 20
      }
  }
```