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Pin position when new children appear #40

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Pin position when new children appear #40

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6 changes: 6 additions & 0 deletions src/react-chatview.js
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Original file line number Diff line number Diff line change
Expand Up @@ -130,6 +130,12 @@ export default class ChatView extends Component {
this.scrollTop = this.scrollable.scrollTop;
this.scrollHeight = this.scrollable.scrollHeight;

//Pin scroll position when new children are coming if user is not at bottom or top
let userIsAtBottom = this.scrollable.scrollHeight - this.scrollable.scrollTop === this.scrollable.clientHeight;
if(!userIsAtBottom && this.props.shouldTriggerLoad()){
this.scrollable.scrollTop = newScrollTop + scrollHeightDifference;
}

// Setting scrollTop can halt user scrolling (and disables hardware acceleration)

// Both cases - flipped and refular - have cases where the content expands in the proper direction,
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