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Reintroduce working resizer code for right panel 

Fixes https://github.com/vector-im/riot-web/issues/11674

This re-introduces and adapted version of what was there before, but fixed for the new collapsed logic: https://github.com/matrix-org/matrix-react-sdk/pull/3703/files#diff-633a0248e235d7446a8868a9145efce2L77-L93

We no longer have a collapsedRhs variable and only set the panel when it is opened, so we can accurately track expanded/collapsed state through presence of a panel.
pull/21833/head
Travis Ralston 2019-12-23 19:26:59 -07:00
parent 8c70eda517
commit 92ea1157be
1 changed files with 15 additions and 0 deletions
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15
src/components/structures/MainSplit.js
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@ -74,6 +74,21 @@ export default class MainSplit extends React.Component {
} }
} }
componentDidUpdate(prevProps) {
const wasPanelSet = this.props.panel && !prevProps.panel;
const wasPanelCleared = !this.props.panel && prevProps.panel;
if (this.resizeContainer && wasPanelSet) {
// The resizer can only be created when **both** expanded and the panel is
// set. Once both are true, the container ref will mount, which is required
// for the resizer to work.
this._createResizer();
} else if (this.resizer && wasPanelCleared) {
this.resizer.detach();
this.resizer = null;
}
}
render() { render() {
const bodyView = React.Children.only(this.props.children); const bodyView = React.Children.only(this.props.children);
const panelView = this.props.panel; const panelView = this.props.panel;