nodeguy/website/docs/api/generated/classes/nodelayout.md

id	title	sidebar_label
nodelayout	NodeLayout	NodeLayout

Abstract class to add functionalities common to all Layout.

This class implements all methods, properties of Qt's QLayout class so that it can be inherited by all layouts*

NodeLayout is an abstract class and hence no instances of the same should be created. It exists so that we can add similar functionalities to all layout's easily. Additionally it helps in typechecking process.

Example

const {
NodeLayout,
NodeWidget,
FlexLayout,
GridLayout,
QPushButton,
QWidget
} = require("@nodegui/nodegui");

// addChildToLayout can accept any layout since it expects NodeLayout
const addChildToLayout = (layout: NodeLayout, widget: NodeWidget) => {
layout.addWidget(widget);
};

addChildToLayout(new FlexLayout(), new QPushButton());
addChildToLayout(new GridLayout(), new QWidget());

Type parameters

▪ Signals: QLayoutSignals

Hierarchy

↳ NodeObject‹Signals›

↳ NodeLayout

↳ FlexLayout

↳ QBoxLayout

↳ QGridLayout

Index

Constructors

• constructor

Properties

• native
• nodeChildren
• nodeParent
• type

Methods

• activate
• addEventListener
• addWidget
• inherits
• invalidate
• objectName
• property
• removeEventListener
• removeWidget
• setNodeParent
• setObjectName
• setProperty
• update

Constructors

constructor

+ new NodeLayout(native: NativeElement): NodeLayout

Inherited from EventWidget.constructor

Overrides Component.constructor

Parameters:

Name	Type
native	NativeElement

Returns: NodeLayout

Properties

Abstract native

• native: NativeElement

Inherited from Component.native

---

nodeChildren

• nodeChildren: Set‹Component›

Inherited from Component.nodeChildren

---

Optional nodeParent

• nodeParent? : Component

Inherited from Component.nodeParent

---

type

• type: string = "layout"

Methods

activate

▸ activate(): boolean

Returns: boolean

---

addEventListener

▸ addEventListener<SignalType>(signalType: SignalType, callback: Signals[SignalType]): void

Inherited from EventWidget.addEventListener

Type parameters:

▪ SignalType: keyof Signals

Parameters:

Name	Type	Description
signalType	SignalType	SignalType is a signal from the widgets signals interface.
callback	Signals[SignalType]	Corresponding callback for the signal as mentioned in the widget's signal interface

Returns: void

void

For example in the case of QPushButton:

const button = new QPushButton();
button.addEventListener('clicked',(checked)=>console.log("clicked"));
// here clicked is a value from QPushButtonSignals interface

▸ addEventListener(eventType: WidgetEventTypes, callback: function): void

Inherited from EventWidget.addEventListener

Parameters:

▪ eventType: WidgetEventTypes

▪ callback: function

For example in the case of QPushButton:

const button = new QPushButton();
button.addEventListener(WidgetEventTypes.HoverEnter,()=>console.log("hovered"));

▸ (event?: NativeElement): void

Parameters:

Name	Type
event?	NativeElement

Returns: void

---

Abstract addWidget

▸ addWidget(childWidget: NodeWidget‹any›, ...args: any[]): void

Parameters:

Name	Type
childWidget	NodeWidget‹any›
...args	any[]

Returns: void

---

inherits

▸ inherits(className: string): boolean

Inherited from NodeObject.inherits

Parameters:

Name	Type
className	string

Returns: boolean

---

invalidate

▸ invalidate(): void

Returns: void

---

objectName

▸ objectName(): string

Inherited from NodeObject.objectName

Returns: string

---

property

▸ property(name: string): QVariant

Inherited from NodeObject.property

Parameters:

Name	Type
name	string

Returns: QVariant

---

removeEventListener

▸ removeEventListener<SignalType>(signalType: SignalType, callback: Signals[SignalType]): void

Inherited from EventWidget.removeEventListener

Type parameters:

▪ SignalType: keyof Signals

Parameters:

Name	Type
signalType	SignalType
callback	Signals[SignalType]

Returns: void

▸ removeEventListener(eventType: WidgetEventTypes, callback: function): void

Inherited from EventWidget.removeEventListener

Parameters:

▪ eventType: WidgetEventTypes

▪ callback: function

▸ (event?: NativeElement): void

Parameters:

Name	Type
event?	NativeElement

Returns: void

---

Abstract removeWidget

▸ removeWidget(childWidget: NodeWidget‹any›): void

Parameters:

Name	Type
childWidget	NodeWidget‹any›

Returns: void

---

setNodeParent

▸ setNodeParent(parent?: Component): void

Inherited from Component.setNodeParent

Parameters:

Name	Type
parent?	Component

Returns: void

---

setObjectName

▸ setObjectName(objectName: string): void

Inherited from NodeObject.setObjectName

Parameters:

Name	Type
objectName	string

Returns: void

---

setProperty

▸ setProperty(name: string, value: QVariantType): boolean

Inherited from NodeObject.setProperty

Parameters:

Name	Type
name	string
value	QVariantType

Returns: boolean

---

update

▸ update(): void

Returns: void