gristlabs_grist-core/app/client/widgets/HyperLinkTextBox.ts

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import {CellValue} from 'app/common/DocActions';
import {DataRowModel} from 'app/client/models/DataRowModel';
import {ViewFieldRec} from 'app/client/models/entities/ViewFieldRec';
import {colors, testId} from 'app/client/ui2018/cssVars';
import {icon} from 'app/client/ui2018/icons';
import {NTextBox} from 'app/client/widgets/NTextBox';
import {dom, styled} from 'grainjs';
/**
* Creates a widget for displaying links. Links can entered directly or following a title.
* The last entry following a space is used as the url.
* ie 'google https://www.google.com' would apears as 'google' to the user but link to the url.
*/
export class HyperLinkTextBox extends NTextBox {
constructor(field: ViewFieldRec) {
super(field, {defaultTextColor: colors.lightGreen.value});
}
public buildDom(row: DataRowModel) {
const value = row.cells[this.field.colId()];
return cssFieldClip(
dom.style('text-align', this.alignment),
dom.cls('text_wrapping', this.wrapping),
dom.maybe((use) => Boolean(use(value)), () =>
dom('a',
dom.attr('href', (use) => _constructUrl(use(value))),
dom.attr('target', '_blank'),
// 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'),
cssLinkIcon('FieldLink', testId('tb-link-icon')),
testId('tb-link')
)
),
dom.text((use) => _formatValue(use(value))),
);
}
}
/**
* Formats value like `foo bar baz` by discarding `baz` and returning `foo bar`.
*/
function _formatValue(value: CellValue): string {
if (typeof value !== 'string') { return ''; }
const index = value.lastIndexOf(' ');
return index >= 0 ? value.slice(0, index) : value;
}
/**
* Given value like `foo bar baz`, constructs URL by checking if `baz` is a valid URL and,
* if not, prepending `http://`.
*/
function _constructUrl(value: CellValue): string {
if (typeof value !== 'string') { return ''; }
const url = value.slice(value.lastIndexOf(' ') + 1);
try {
// Try to construct a valid URL
return (new URL(url)).toString();
} catch (e) {
// Not a valid URL, so try to prefix it with http
return 'http://' + url;
}
}
const cssFieldClip = styled('div.field_clip', `
color: var(--grist-actual-cell-color, ${colors.lightGreen});
`);
const cssLinkIcon = styled(icon, `
background-color: var(--grist-actual-cell-color, ${colors.lightGreen});
margin: -1px 2px 2px 0;
`);