overleaf/services/web/frontend/js/features/history/extensions/highlights.ts
Tim Down 11f8905be4 Connect up document diff viewer to history state
GitOrigin-RevId: 610a254ea77c194969033d0791ecf1129e02c4bf
2023-03-31 08:03:47 +00:00

99 lines
2.5 KiB
TypeScript

import { StateEffect, StateField } from '@codemirror/state'
import { Decoration, EditorView, hoverTooltip, Tooltip } from '@codemirror/view'
import { Highlight } from '../services/types/doc'
export const setHighlightsEffect = StateEffect.define<Highlight[]>()
function highlightToMarker(highlight: Highlight) {
const className =
highlight.type === 'addition' ? 'ol-addition-marker' : 'ol-deletion-marker'
const { from, to } = highlight.range
return Decoration.mark({
class: className,
attributes: {
style: `--hue: ${highlight.hue}`,
},
}).range(from, to)
}
const theme = EditorView.baseTheme({
'.ol-addition-marker': {
backgroundColor: 'hsl(var(--hue), 70%, 85%)',
},
'.ol-deletion-marker': {
textDecoration: 'line-through',
},
'&.overall-theme-dark .ol-deletion-marker': {
color: 'hsl(var(--hue), 100%, 60%)',
},
'&.overall-theme-light .ol-deletion-marker': {
color: 'hsl(var(--hue), 70%, 40%)',
},
'.cm-tooltip-hover': {
backgroundColor: 'transparent',
borderWidth: 0,
},
'.ol-cm-highlight-tooltip': {
backgroundColor: 'hsl(var(--hue), 70%, 50%)',
borderRadius: '4px',
padding: '4px',
color: '#fff',
},
})
const tooltip = (view: EditorView, pos: number, side: any): Tooltip | null => {
const highlights = view.state.field(highlightsField)
const highlight = highlights.find(highlight => {
const { from, to } = highlight.range
return !(
pos < from ||
pos > to ||
(pos === from && side < 0) ||
(pos === to && side > 0)
)
})
if (!highlight) {
return null
}
return {
pos: highlight.range.from,
end: highlight.range.to,
above: true,
create: () => {
const dom = document.createElement('div')
dom.classList.add('ol-cm-highlight-tooltip')
dom.style.setProperty('--hue', highlight.hue.toString())
dom.textContent = highlight.label
return { dom }
},
}
}
const highlightsField = StateField.define<Highlight[]>({
create() {
return []
},
update(highlightMarkers, tr) {
for (const effect of tr.effects) {
if (effect.is(setHighlightsEffect)) {
return effect.value
}
}
return highlightMarkers
},
provide: field => [
EditorView.decorations.from(field, highlights =>
Decoration.set(highlights.map(highlight => highlightToMarker(highlight)))
),
theme,
hoverTooltip(tooltip, { hoverTime: 0 }),
],
})
export function highlights() {
return highlightsField
}