Dynamic tabs with user-click chosen components

Question

I m trying to setup a tab system that allows for components to register themselves  with a title   The first tab is like an inbox  there s plenty of actions link items to choose from for the users  and each of these clicks should be able to instantiate a new component  on click  The actions   links comes in from JSON   The instantiated component will then register itself as a new tab   I m not sure if this is the  best  approach  So far  the only guides I ve seen are for static tabs  which doesn t help   So far  I ve only got the tabs service which is bootstrapped in main to persist throughout the app  It looks something like this   export interface ITab   title  string      Injectable   export class TabsService       private tabs   new Set lt ITab gt          addTab title  string   ITab           let tab  ITab     title            this tabs add tab           return tab             removeTab tab  ITab            this tabs delete tab             Questions    How can I have a dynamic list in the inbox that creates new  different  tabs  I am sort of guessing the DynamicComponentBuilder would be used  How can the components be created from the inbox  on click  register themselves as tabs and also be shown  I m guessing ng-content  but I can t find much info on how to use it   EDIT  An attempt to clarify   Think of the inbox as a mail inbox  Items are fetched as JSON and it displays several items  Once one of the items is clicked  a new tab is created with that items action  type   The type is then a component   EDIT 2  Image

User · Answer

there is component ready to use  rc5 compatible  ng2-steps which uses Compiler to inject component to step container and service for wiring everything together  data sync       import   Directive   Input  OnInit  Compiler   ViewContainerRef   from   angular core    import   StepsService   from    ng2-steps     Directive     selector   ng2-step      export class StepDirective implements OnInit      Input  content   content any     Input  index   index string    public instance     constructor      private compiler Compiler      private viewContainerRef ViewContainerRef      private sds StepsService          ngOnInit          Magic      this compiler compileComponentAsync this content  then  cmpFactory   gt         const injector   this viewContainerRef injector        this viewContainerRef createComponent cmpFactory  0   injector

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update  Angular 5 StackBlitz example  update  ngComponentOutlet was added to 4 0 0-beta 3  update  There is a NgComponentOutlet work in progress that does something similar https   github com angular angular pull 11235  RC 7  Plunker example RC 7     Helper component to add dynamic components  Component     selector   dcl-wrapper     template    lt div  target gt  lt  div gt      export class DclWrapper      ViewChild  target    read  ViewContainerRef   target  ViewContainerRef     Input   type  Type lt Component gt     cmpRef  ComponentRef lt Component gt     private isViewInitialized boolean   false     constructor private componentFactoryResolver  ComponentFactoryResolver  private compiler  Compiler        updateComponent         if  this isViewInitialized          return            if this cmpRef             when the  type  input changes we destroy a previously           created component before creating the new one       this cmpRef destroy               let factory   this componentFactoryResolver resolveComponentFactory this type       this cmpRef   this target createComponent factory         to access the created instance use        this compRef instance someProperty    someValue          this compRef instance someOutput subscribe val   gt  doSomething            ngOnChanges         this updateComponent           ngAfterViewInit         this isViewInitialized   true      this updateComponent             ngOnDestroy         if this cmpRef          this cmpRef destroy                      Usage example     Use dcl-wrapper component  Component     selector   my-tabs     template       lt h2 gt Tabs lt  h2 gt     lt div  ngFor  let tab of tabs  gt       lt dcl-wrapper  type   tab  gt  lt  dcl-wrapper gt     lt  div gt       export class Tabs      Input   tabs         Component     selector   my-app     template       lt h2 gt Hello   name   lt  h2 gt     lt my-tabs  tabs   types  gt  lt  my-tabs gt       export class App        The list of components to create tabs from   types    C3  C1  C2  C3  C3  C1  C1          NgModule     imports    BrowserModule      declarations    App  DclWrapper  Tabs  C1  C2  C3     entryComponents   C1  C2  C3     bootstrap    App      export class AppModule        See also angular io DYNAMIC COMPONENT LOADER  older versions xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx  This changed again in Angular2 RC 5  I will update the example below but it s the last day before vacation   This Plunker example demonstrates how to dynamically create components in RC 5    Update - use ViewContainerRef createComponent    Because DynamicComponentLoader is deprecated  the approach needs to be update again    Component     selector   dcl-wrapper     template    lt div  target gt  lt  div gt      export class DclWrapper      ViewChild  target    read  ViewContainerRef   target     Input   type    cmpRef ComponentRef    private isViewInitialized boolean   false     constructor private resolver  ComponentResolver        updateComponent         if  this isViewInitialized          return            if this cmpRef          this cmpRef destroy             this resolver resolveComponent this type  then  factory ComponentFactory lt any gt     gt          this cmpRef   this target createComponent factory           to access the created instance use          this compRef instance someProperty    someValue            this compRef instance someOutput subscribe val   gt  doSomething                    ngOnChanges         this updateComponent           ngAfterViewInit         this isViewInitialized   true      this updateComponent             ngOnDestroy         if this cmpRef          this cmpRef destroy                      Plunker example RC 4 Plunker example beta 17  Update - use loadNextToLocation  export class DclWrapper      ViewChild  target    read  ViewContainerRef   target     Input   type    cmpRef ComponentRef    private isViewInitialized boolean   false     constructor private dcl DynamicComponentLoader        updateComponent            should be executed every time  type  changes but not before  ngAfterViewInit    was called         to have  target  initialized     if  this isViewInitialized          return            if this cmpRef          this cmpRef destroy              this dcl loadNextToLocation this type  this target  then  cmpRef    gt          this cmpRef   cmpRef                 ngOnChanges         this updateComponent           ngAfterViewInit         this isViewInitialized   true      this updateComponent             ngOnDestroy         if this cmpRef          this cmpRef destroy                      Plunker example beta 17  original  Not entirely sure from your question what your requirements are but I think this should do what you want   The Tabs component gets an array of types passed and it creates  tabs  for each item in the array    Component     selector   dcl-wrapper     template    lt div  target gt  lt  div gt      export class DclWrapper     constructor private elRef ElementRef  private dcl DynamicComponentLoader        Input   type     ngOnChanges         if this cmpRef          this cmpRef dispose              this dcl loadIntoLocation this type  this elRef   target   then  cmpRef    gt          this cmpRef   cmpRef                  Component     selector   c1     template    lt h2 gt c1 lt  h2 gt       export class C1       Component     selector   c2     template    lt h2 gt c2 lt  h2 gt       export class C2       Component     selector   c3     template    lt h2 gt c3 lt  h2 gt       export class C3       Component     selector   my-tabs     directives   DclWrapper     template       lt h2 gt Tabs lt  h2 gt     lt div  ngFor  let tab of tabs  gt       lt dcl-wrapper  type   tab  gt  lt  dcl-wrapper gt     lt  div gt       export class Tabs      Input   tabs       Component     selector   my-app     directives   Tabs    template       lt h2 gt Hello   name   lt  h2 gt     lt my-tabs  tabs   types  gt  lt  my-tabs gt       export class App     types    C3  C1  C2  C3  C3  C1  C1       Plunker example beta 15  not based on your Plunker   There is also a way to pass data along that can be passed to the dynamically created component like  someData would need to be passed like type       this dcl loadIntoLocation this type  this elRef   target   then  cmpRef    gt      cmpRef instance someProperty   someData    this cmpRef   cmpRef        There is also some support to use dependency injection with shared services   For more details see https   angular io docs ts latest cookbook dynamic-component-loader html

User · Answer

I m not cool enough for comments  I fixed the plunker from the accepted answer to work for rc2  Nothing fancy  links to the CDN were just broken is all     angular core       main   bundles core umd js     defaultExtension   js       angular compiler       main   bundles compiler umd js     defaultExtension   js       angular common       main   bundles common umd js     defaultExtension   js       angular platform-browser-dynamic       main   bundles platform-browser-dynamic umd js     defaultExtension   js       angular platform-browser       main   bundles platform-browser umd js     defaultExtension   js       https   plnkr co edit kVJvI1vkzrLZJeRFsZuv p preview

[angular] Dynamic tabs with user-click chosen components

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