YoeriVD / angular-viewproviders-demo

Example of the use of viewProviders array

ViewProviderDemo

This project was generated with Angular CLI version 1.5.0.

This example demonstrates the use of viewProviders array in Angular

the following hierarchy is built:

<tab-container>
  <tab><log></log></tab>
  <tab><log></log></tab>
  <tab><log></log></tab>
</tab-container>

TabComponentContainer overrides the provider for TabContainerService but ONLY for components in its template. This means, that if TabContainer or it's children require TabContainerService, they still get the original one.

LogComponent is used to demonstrate. Imagine we use LogComponent inside <tab> as seen in the example above. LogComponent is now dependent on the providers of TabComponent. Since TabComponentContainer used viewProviders, only the first LogComponent gets the specific provider.

log: specific
log: default
log: default
log: default

Development server

Run ng serve for a dev server. Navigate to http://localhost:4200/. The app will automatically reload if you change any of the source files.

Code scaffolding

Run ng generate component component-name to generate a new component. You can also use ng generate directive|pipe|service|class|guard|interface|enum|module.

Build

Run ng build to build the project. The build artifacts will be stored in the dist/ directory. Use the -prod flag for a production build.

Running unit tests

Run ng test to execute the unit tests via Karma.

Running end-to-end tests

Run ng e2e to execute the end-to-end tests via Protractor.

Further help

To get more help on the Angular CLI use ng help or go check out the Angular CLI README.