Class: Textarea

Extends

• LuCI.ui.AbstractElement

Methods

inherited getValidationError(){string}

ui.js, line 166

Returns the current validation error

Returns:

Type	Description
string	The validation error at this time

inherited getValue(){string|Array.<string>|null}

ui.js, line 543

Read the current value of the input widget.

Returns:

Type	Description
string | Array.<string> | null	The current value of the input element. For simple inputs like text fields or selects, the return value type will be a - possibly empty - string. Complex widgets such as DynamicList instances may result in an array of strings or null for unset values.

inherited isChanged(){boolean}

ui.js, line 141

Check whether the input value was altered by the user.

Returns:

Type	Description
boolean	Returns true if the input value has been altered by the user or false if it is unchanged. Note that if the user modifies the initial value and changes it back to the original state, it is still reported as changed.

inherited isValid(){boolean}

ui.js, line 154

Check whether the current input value is valid.

Returns:

Type	Description
boolean	Returns true if the current input value is valid or false if it does not meet the validation constraints.

inherited registerEvents(targetNode, synevent, events)

ui.js, line 215

Dispatch a custom (synthetic) event in response to received events.

Sets up event handlers on the given target DOM node for the given event names that dispatch a custom event of the given type to the widget root DOM node.

The primary purpose of this function is to set up a series of custom uniform standard events such as widget-update, validation-success, validation-failure etc. which are triggered by various different widget specific native DOM events.

Name	Type	Description
targetNode	Node	Specifies the DOM node on which the native event listeners should be registered.
synevent	string	The name of the custom event to dispatch to the widget root DOM node.
events	Array.<string>	The native DOM events for which event handlers should be registered.

inherited render(){Node}

ui.js, line 504

Render the widget, set up event listeners and return resulting markup.

Returns:

Type	Description
Node	Returns a DOM Node or DocumentFragment containing the rendered widget markup.

inherited setChangeEvents(targetNode, events)

ui.js, line 284

Set up listeners for native DOM events that may change the widget value.

Sets up event handlers on the given target DOM node for the given event names which may cause the input value to change completely, such as change events in a select menu. In contrast to update events, such change events will not trigger input value validation but they may cause field dependencies to get re-evaluated and will mark the input widget as dirty.

Name	Type	Description
targetNode	Node	Specifies the DOM node on which the event listeners should be registered.
events	string	repeatable The DOM events for which event handlers should be registered.

inherited setPlaceholder(value)

ui.js, line 113

Set the current placeholder value of the input widget.

Name	Type	Description
value	string | Array.<string> | null	The placeholder to set for the input element. Only applicable to text inputs, not to radio buttons, selects or similar.

inherited setUpdateEvents(targetNode, events)

ui.js, line 240

Set up listeners for native DOM events that may update the widget value.

Sets up event handlers on the given target DOM node for the given event names which may cause the input value to update, such as keyup or onclick events. In contrast to change events, such update events will trigger input value validation.

Name	Type	Description
targetNode	Node	Specifies the DOM node on which the event listeners should be registered.
events	string	repeatable The DOM events for which event handlers should be registered.

inherited setValue(value)

ui.js, line 548

Set the current value of the input widget.

Name	Type	Description
value	string | Array.<string> | null	The value to set the input element to. For simple inputs like text fields or selects, the value should be a - possibly empty - string. Complex widgets such as DynamicList instances may accept string array or null values.

inherited triggerValidation()

ui.js, line 180

Force validation of the current input value.

Usually input validation is automatically triggered by various DOM events bound to the input widget. In some cases it is required though to manually trigger validation runs, e.g. when programmatically altering values.

Type Definitions

LuCI.ui.Textarea.InitOptionsLuCI.ui.AbstractElement.InitOptions

In addition to the AbstractElement.InitOptions the following properties are recognized:

Properties:

Name	Type	Argument	Default	Description
readonly	boolean	<optional>	false	Specifies whether the input widget should be rendered readonly.
placeholder	string	<optional>		Specifies the HTML placeholder attribute which is displayed when the corresponding <textarea> element is empty.
monospace	boolean	<optional>	false	Specifies whether a monospace font should be forced for the textarea contents.
cols	number	<optional>		Specifies the HTML cols attribute to set on the corresponding <textarea> element.
rows	number	<optional>		Specifies the HTML rows attribute to set on the corresponding <textarea> element.
wrap	boolean	<optional>	false	Specifies whether the HTML wrap attribute should be set.