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Support React v16 when editor is focused after removed from DOM #1409

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Support React v16 when editor is focused after removed from DOM #1409

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3cbfda4
it's OK if focus can't find its parent
mattkrick Sep 27, 2017
25f2364
Merge branch 'master' into patch-4
flarnie Oct 4, 2017
6cebdb5
Tweak type check in DraftEditor '_focus' callback
flarnie Oct 9, 2017
5270c46
Merge branch 'master' into patch-4
flarnie Oct 9, 2017
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6 changes: 6 additions & 0 deletions src/component/base/DraftEditor.react.js
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Original file line number Diff line number Diff line change
Expand Up @@ -368,6 +368,12 @@ class DraftEditor extends React.Component<DraftEditorProps, State> {
const alreadyHasFocus = editorState.getSelection().getHasFocus();
const editorNode = ReactDOM.findDOMNode(this.refs.editor);

if (!editorNode) {
// once in a while people call 'focus' in a setTimeout, and the node has
// been deleted, so it can be null in that case.
return;
}

const scrollParent = Style.getScrollParent(editorNode);
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correct me if I'm wrong, but Style.getScrollParent has 1 param & that is node, so we don't want to call it unless we have an HTMLElement, right? It doesn't matter either way (code below), but if we were writing a unit test for this, then it'd be REALLY hard to reach that invariant...

getScrollParent: function getScrollParent(node) {
	    if (!node) {
	      return null;
	    }
            ...

const {x, y} = scrollPosition || getScrollPosition(scrollParent);

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