Component which automatically handles infinite scrolling

[aaronczichon]

Customer Request

Is your feature request related to a problem? Please describe.
As a developer I want to use the infinite scrolling without handling the loading of new items manually (like with the directive). This should be automatically possible using a component.

Describe the solution you'd like
In the best case I simply can add a component which handles infinite scrolling. Here is a sample template which may can be a solution:

<ng-infinite-scroll [itemList]="items" [itemLoad]="10" [itemThreshold]="2">
<!-- your recurring component -->
<div *ngScrollItem><!-- I'm the recurring element! --><div>
</ng-infinite-scroll>

Additional context

• itemList defines an array of all items which should be rendered.
• itemLoad defines how many new items should be loaded when the scrolling point is reached
• itemThreshold defines on which item we should load the next items starting from the bottom (2 means as soon as we reach the 2nd last item)
• *ngScrollItem defines the looped items in the template provided by the infinite scrolling component

Internal

Definition of Ready Check

• Test cases are added to the feature request
• Breaking changes are documented and the impact is defined
• A clear solution is outlined
• Alternatives where discussed and documented
• None general purpose solutions are documented and the implications are outlined
• A clear user experience flow is defined

Definition of Done Check

• Test cases were checked during the pull request review
• Version update and changelog is updated
• Automated tests and static code analyses ran without any issues
• A new version is available for users to download
• Follow up features are documented and linked to the original feature
• Product owner is informed
• The implemented changes can be verified in the example application
• For technical changes a short description is either provided in the pull request or the original issue

Test Cases
Describe how this feature can be tested (manually, automated tests)