gristlabs_grist-core/app/client/ui2018/links.ts

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import { sameDocumentUrlState, urlState } from 'app/client/models/gristUrlState';
import { colors } from 'app/client/ui2018/cssVars';
import { CellValue } from 'app/plugin/GristData';
import { dom, IDomArgs, Observable, styled } from 'grainjs';
/**
* Styling for a simple green <A HREF> link.
*/
// Match the font-weight of buttons.
export const cssLink = styled('a', `
color: ${colors.lightGreen};
--icon-color: ${colors.lightGreen};
text-decoration: none;
&:hover, &:focus {
color: ${colors.lightGreen};
--icon-color: ${colors.lightGreen};
text-decoration: underline;
}
`);
export function gristLink(href: string|Observable<string>, ...args: IDomArgs<HTMLElement>) {
return dom("a",
dom.attr("href", href),
dom.attr("target", "_blank"),
dom.on("click", ev => onClickHyperLink(ev, typeof href === 'string' ? href : href.get())),
// As per Google and Mozilla recommendations to prevent opened links
// from running on the same process as Grist:
// https://developers.google.com/web/tools/lighthouse/audits/noopener
dom.attr("rel", "noopener noreferrer"),
args
);
}
/**
* If possible (i.e. if `url` points to somewhere in the current document)
* use pushUrl to navigate without reloading or opening a new tab
*/
export async function onClickHyperLink(ev: MouseEvent, url: CellValue) {
// Only override plain-vanilla clicks.
if (ev.shiftKey || ev.metaKey || ev.ctrlKey || ev.altKey) { return; }
const newUrlState = sameDocumentUrlState(url);
if (!newUrlState) { return; }
ev.preventDefault();
await urlState().pushUrl(newUrlState);
}