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Scrollee.tsx
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Scrollee.tsx
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/*
Copyright 2005 - 2021 Advantage Solutions, s. r. o.
This file is part of ORIGAM (http://www.origam.org).
ORIGAM is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
ORIGAM is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with ORIGAM. If not, see <http://www.gnu.org/licenses/>.
*/
import { observer } from "mobx-react";
import * as React from "react";
import { IScrolleeProps } from "./types";
import S from "./Scrollee.module.css";
import { action } from "mobx";
/*
Component translating its content according to scrollOffsetSource.
*/
// TODO: Maybe add hideOverflow property to disable content clipping? (or allow some custom class?)
@observer
export default class Scrollee extends React.Component<IScrolleeProps> {
@action.bound
handleFocus(event: any) {
const tableElement = event.target.closest(this.props.controlScrollStateSelector);
const tableRect = tableElement?.getBoundingClientRect();
const targetRect = event.target.getBoundingClientRect();
const overLeft = Math.min(0, targetRect.left - tableRect.left);
const overRight = Math.max(0, targetRect.right - tableRect?.right);
if(overRight) {
this.props.scrollOffsetSource.scrollBy({
deltaLeft: overRight + (this.props.controlScrollStatePadding?.right || 0)
})
} else if(overLeft) {
this.props.scrollOffsetSource.scrollBy({
deltaLeft: overLeft - (this.props.controlScrollStatePadding?.left || 0)
})
}
}
public render() {
return (
<div
className={S.scrollee}
style={{
width: this.props.width,
height: this.props.height,
zIndex: this.props.zIndex || 0,
}}
onFocus={this.props.controlScrollStateByFocus ? this.handleFocus : undefined}
>
<div
className={S.scrolleeShifted}
style={{
top:
(this.props.fixedVert ? 0 : -this.props.scrollOffsetSource.scrollTop) +
(this.props.offsetTop || 0),
left:
(this.props.fixedHoriz ? 0 : -this.props.scrollOffsetSource.scrollLeft) +
(this.props.offsetLeft || 0),
}}
>
{this.props.children}
</div>
</div>
);
}
}