(Full disclosure: This question is an offshoot of Creating custom view) You can create constructors beyond the three standard ones inherited from View that add the attributes you want… MyComponent(Context context, String foo) { super(context); // Do something with foo } …but I don’t recommend it. It’s better to follow the same convention as other … Read more
I don’t believe there is, nor would I think it’s a good idea. From my understanding, what you’re aiming to achieve is have a commons-like component, that will be used for several mojos. This requires the current Maven session to be passed in & used to subsequently pass back a value. The way Maven works … Read more
Move all of your state and your handleClick function from Header to your MainWrapper component. Then pass values as props to all components that need to share this functionality. class MainWrapper extends React.Component { constructor() { super(); this.state = { sidbarPushCollapsed: false, profileCollapsed: false }; this.handleClick = this.handleClick.bind(this); } handleClick() { this.setState({ sidbarPushCollapsed: !this.state.sidbarPushCollapsed, profileCollapsed: … Read more
What you can do is check whether you props is defined initially or not by checking if nextProps.blog.content is undefined or not since your body is nested inside it like componentWillReceiveProps(nextProps) { if(nextProps.blog.content !== undefined && nextProps.blog.title !== undefined) { console.log(“new title is”, nextProps.blog.title); console.log(“new body content is”, nextProps.blog.content[“body”]); this.setState({ title: nextProps.blog.title, body: nextProps.blog.content[“body”] }) … Read more
Could the Barcode Rendering Framework at Codeplex GitHub be of help?
As requested, I’m posting another answer about how to mock sub components with input/output: So Lets start by saying we have TaskListComponent that displays tasks, and refreshes whenever one of them is clicked: <div id=”task-list”> <div *ngFor=”let task of (tasks$ | async)”> <app-task [task]=”task” (click)=”refresh()”></app-task> </div> </div> app-task is a sub component with the [task] … Read more
I agree with siraj, strictly speaking the example in the accepted answer is not a true HOC. The distinguishing feature of a HOC is that it returns a component, whereas the PrivateRoute component in the accepted answer is a component itself. So while it accomplishes what it set out to do just fine, I don’t … Read more
I think these might be what you’re looking for: https://angular.io/guide/component-interaction#parent-interacts-with-child-via-local-variable https://angular.io/guide/component-interaction#parent-calls-an-viewchild You can access child properties and methods using local variables within the template or using the @ViewChild decorator in the parent’s component class.
You could leverage a ReplaySubject for that: EDIT: Different since RxJS 6.x: Note the use of the pipe() method. class myComponent { private destroyed$: ReplaySubject<boolean> = new ReplaySubject(1); constructor( private serviceA: ServiceA, private serviceB: ServiceB, private serviceC: ServiceC) {} ngOnInit() { this.serviceA .pipe(takeUntil(this.destroyed$)) .subscribe(…); this.serviceB .pipe(takeUntil(this.destroyed$)) .subscribe(…); this.serviceC .pipe(takeUntil(this.destroyed$)) .subscribe(…); } ngOnDestroy() { this.destroyed$.next(true); this.destroyed$.complete(); … Read more
You would need to pass down each prop individually for each function that you needed to call <CreateProfile onFirstNameChange={this.firstNameChange} onHide={close} show={this.state.showModal} /> and then in the CreateProfile component you can either do const CreateProfile = ({onFirstNameChange, onHide, show }) => {…} with destructuring it will assign the matching property names/values to the passed in variables. … Read more