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import { observer } from "mobx-react"
import { action, observable, computed, reaction } from "mobx"
import {
GrapherInterface,
GrapherQueryParams,
} from "../grapher/core/GrapherInterface"
import {
ExplorerControlPanel,
ExplorerControlBar,
} from "../explorer/ExplorerControls"
import ReactDOM from "react-dom"
import { ExplorerProgram } from "../explorer/ExplorerProgram"
import { ColumnSlug, SerializedGridProgram } from "../clientUtils/owidTypes"
import {
Grapher,
GrapherManager,
GrapherProgrammaticInterface,
} from "../grapher/core/Grapher"
import {
debounce,
excludeUndefined,
exposeInstanceOnWindow,
flatten,
isInIFrame,
keyMap,
omitUndefinedValues,
throttle,
uniqBy,
} from "../clientUtils/Util"
import {
SlideShowController,
SlideShowManager,
} from "../grapher/slideshowController/SlideShowController"
import {
ExplorerChoiceParams,
ExplorerContainerId,
ExplorerFullQueryParams,
EXPLORERS_PREVIEW_ROUTE,
EXPLORERS_ROUTE_FOLDER,
UNSAVED_EXPLORER_DRAFT,
UNSAVED_EXPLORER_PREVIEW_QUERYPARAMS,
} from "./ExplorerConstants"
import { EntityPickerManager } from "../grapher/controls/entityPicker/EntityPickerConstants"
import { SelectionArray } from "../grapher/selection/SelectionArray"
import { SortOrder, TableSlug } from "../coreTable/CoreTableConstants"
import { isNotErrorValue } from "../coreTable/ErrorValues"
import { Bounds, DEFAULT_BOUNDS } from "../clientUtils/Bounds"
import { FontAwesomeIcon } from "@fortawesome/react-fontawesome"
import { faChartLine } from "@fortawesome/free-solid-svg-icons/faChartLine"
import { EntityPicker } from "../grapher/controls/entityPicker/EntityPicker"
import classNames from "classnames"
import { ColumnTypeNames, CoreColumnDef } from "../coreTable/CoreColumnDef"
import { BlankOwidTable, OwidTable } from "../coreTable/OwidTable"
import { BAKED_BASE_URL } from "../settings/clientSettings"
import {
explorerUrlMigrationsById,
migrateExplorerUrl,
} from "./urlMigrations/ExplorerUrlMigrations"
import { setWindowUrl, Url } from "../clientUtils/urls/Url"
import { ExplorerPageUrlMigrationSpec } from "./urlMigrations/ExplorerPageUrlMigrationSpec"
import { setSelectedEntityNamesParam } from "../grapher/core/EntityUrlBuilder"
import { PromiseCache } from "../clientUtils/PromiseCache"
import { PromiseSwitcher } from "../clientUtils/PromiseSwitcher"
export interface ExplorerProps extends SerializedGridProgram {
grapherConfigs?: GrapherInterface[]
queryStr?: string
isEmbeddedInAnOwidPage?: boolean
isInStandalonePage?: boolean
isPreview?: boolean
canonicalUrl?: string
selection?: SelectionArray
}
const renderLivePreviewVersion = (props: ExplorerProps) => {
let renderedVersion: string
setInterval(() => {
const versionToRender =
localStorage.getItem(UNSAVED_EXPLORER_DRAFT + props.slug) ??
props.program
if (versionToRender === renderedVersion) return
const newProps = { ...props, program: versionToRender }
ReactDOM.render(
<Explorer
{...newProps}
queryStr={window.location.search}
key={Date.now()}
isPreview={true}
/>,
document.getElementById(ExplorerContainerId)
)
renderedVersion = versionToRender
}, 1000)
}
const isNarrow = () =>
window.screen.width < 450 || document.documentElement.clientWidth <= 800
@observer
export class Explorer
extends React.Component<ExplorerProps>
implements
SlideShowManager<ExplorerChoiceParams>,
EntityPickerManager,
GrapherManager
{
// caution: do a ctrl+f to find untyped usages
static renderSingleExplorerOnExplorerPage(
program: ExplorerProps,
grapherConfigs: GrapherInterface[],
urlMigrationSpec?: ExplorerPageUrlMigrationSpec
) {
const props: ExplorerProps = {
...program,
grapherConfigs,
isEmbeddedInAnOwidPage: false,
isInStandalonePage: true,
}
if (window.location.href.includes(EXPLORERS_PREVIEW_ROUTE)) {
renderLivePreviewVersion(props)
return
}
let url = Url.fromURL(window.location.href)
// Handle redirect spec that's baked on the page.
// e.g. the old COVID Grapher to Explorer redirects are implemented this way.
if (urlMigrationSpec) {
const { explorerUrlMigrationId, baseQueryStr } = urlMigrationSpec
const migration = explorerUrlMigrationsById[explorerUrlMigrationId]
if (migration) {
url = migration.migrateUrl(url, baseQueryStr)
} else {
console.error(
`No explorer URL migration with id ${explorerUrlMigrationId}`
)
}
}
// Handle explorer-specific migrations.
// This is how we migrate the old CO2 explorer to the new CO2 explorer.
// Because they are on the same path, we can't handle it like we handle
// the COVID explorer redirects above.
url = migrateExplorerUrl(url)
// Update the window URL
setWindowUrl(url)
ReactDOM.render(
<Explorer {...props} queryStr={url.queryStr} />,
document.getElementById(ExplorerContainerId)
)
}
private initialQueryParams = Url.fromQueryStr(this.props.queryStr ?? "")
.queryParams as ExplorerFullQueryParams
explorerProgram = ExplorerProgram.fromJson(this.props).initDecisionMatrix(
this.initialQueryParams
)
// only used for the checkbox at the bottom of the embed dialog
@observable embedDialogHideControls = true
selection =
this.props.selection ??
new SelectionArray(
this.explorerProgram.selection,
undefined,
this.explorerProgram.entityType
)
@observable.ref grapher?: Grapher
@action.bound setGrapher(grapher: Grapher) {
this.grapher = grapher
}
@computed get grapherConfigs() {
const arr = this.props.grapherConfigs || []
const grapherConfigsMap: Map<number, GrapherInterface> = new Map()
arr.forEach((config) => grapherConfigsMap.set(config.id!, config))
return grapherConfigsMap
}
disposers: (() => void)[] = []
componentDidMount() {
this.setGrapher(this.grapherRef!.current!)
this.updateGrapherFromExplorer()
let url = Url.fromQueryParams(this.initialQueryParams)
if (this.props.selection?.hasSelection) {
url = setSelectedEntityNamesParam(
url,
this.props.selection.selectedEntityNames
)
}
this.grapher?.populateFromQueryParams(url.queryParams)
exposeInstanceOnWindow(this, "explorer")
this.onResize() // call resize for the first time to initialize chart
this.updateEntityPickerTable() // call for the first time to initialize EntityPicker
this.attachEventListeners()
}
private attachEventListeners() {
this.onResizeThrottled = throttle(this.onResize, 100)
window.addEventListener("resize", this.onResizeThrottled)
this.disposers.push(() => {
if (this.onResizeThrottled !== undefined)
window.removeEventListener("resize", this.onResizeThrottled)
})
// We always prefer the entity picker metric to be sourced from the currently displayed table.
// To do this properly, we need to also react to the table changing.
this.disposers.push(
reaction(
() => [
this.entityPickerMetric,
this.explorerProgram.grapherConfig.tableSlug,
],
() => this.updateEntityPickerTable()
)
)
if (this.props.isInStandalonePage) this.bindToWindow()
}
componentWillUnmount() {
this.disposers.forEach((dispose) => dispose())
}
private initSlideshow() {
const grapher = this.grapher
if (!grapher || grapher.slideShow) return
grapher.slideShow = new SlideShowController(
this.explorerProgram.decisionMatrix.allDecisionsAsQueryParams(),
0,
this
)
}
private persistedGrapherQueryParamsBySelectedRow: Map<
number,
Partial<GrapherQueryParams>
> = new Map()
// todo: break this method up and unit test more. this is pretty ugly right now.
@action.bound private reactToUserChangingSelection(oldSelectedRow: number) {
if (!this.grapher || !this.explorerProgram.currentlySelectedGrapherRow)
return // todo: can we remove this?
this.initSlideshow()
const oldGrapherParams = this.grapher.changedParams
this.persistedGrapherQueryParamsBySelectedRow.set(
oldSelectedRow,
oldGrapherParams
)
const newGrapherParams = {
...this.persistedGrapherQueryParamsBySelectedRow.get(
this.explorerProgram.currentlySelectedGrapherRow
),
region: oldGrapherParams.region,
time: this.grapher.timeParam,
}
const previousTab = this.grapher.tab
this.updateGrapherFromExplorer()
// preserve the previous tab if that's still available in the new view;
// and use the first tab otherwise
newGrapherParams.tab = this.grapher.availableTabs.includes(previousTab)
? previousTab
: this.grapher.availableTabs[0]
this.grapher.populateFromQueryParams(newGrapherParams)
}
@action.bound private setGrapherTable(table: OwidTable) {
if (this.grapher) {
this.grapher.inputTable = table
this.grapher.appendNewEntitySelectionOptions()
}
}
private futureGrapherTable = new PromiseSwitcher<OwidTable>({
onResolve: (table) => this.setGrapherTable(table),
onReject: (error) => this.grapher?.setError(error),
})
tableLoader = new PromiseCache((slug: TableSlug | undefined) =>
this.explorerProgram.constructTable(slug)
)
@action.bound updateGrapherFromExplorer() {
const grapher = this.grapher
if (!grapher) return
const grapherConfigFromExplorer = this.explorerProgram.grapherConfig
const {
grapherId,
tableSlug,
yScaleToggle,
yAxisMin,
facetYDomain,
relatedQuestionText,
relatedQuestionUrl,
} = grapherConfigFromExplorer
const hasGrapherId = grapherId && isNotErrorValue(grapherId)
const grapherConfig = hasGrapherId
? this.grapherConfigs.get(grapherId!) ?? {}
: {}
const config: GrapherProgrammaticInterface = {
...grapherConfig,
...grapherConfigFromExplorer,
hideEntityControls: this.showExplorerControls,
manuallyProvideData: tableSlug ? true : false,
}
grapher.setAuthoredVersion(config)
grapher.reset()
grapher.yAxis.canChangeScaleType = yScaleToggle
grapher.yAxis.min = yAxisMin
if (facetYDomain) {
grapher.yAxis.facetDomain = facetYDomain
}
if (relatedQuestionText && relatedQuestionUrl) {
grapher.relatedQuestions = [
{ text: relatedQuestionText, url: relatedQuestionUrl },
]
}
grapher.updateFromObject(config)
if (!hasGrapherId) {
// Clear any error messages, they are likely to be related to dataset loading.
this.grapher?.clearErrors()
// Set a table immediately. A BlankTable shows a loading animation.
this.setGrapherTable(
BlankOwidTable(tableSlug, `Loading table '${tableSlug}'`)
)
this.futureGrapherTable.set(this.tableLoader.get(tableSlug))
grapher.id = 0
}
// Download data if this is a Grapher ID inside the Explorer specification
grapher.downloadData()
grapher.slug = this.explorerProgram.slug
if (this.downloadDataLink)
grapher.externalCsvLink = this.downloadDataLink
}
@action.bound setSlide(choiceParams: ExplorerFullQueryParams) {
this.explorerProgram.decisionMatrix.setValuesFromChoiceParams(
choiceParams
)
}
@computed private get currentChoiceParams(): ExplorerChoiceParams {
const { decisionMatrix } = this.explorerProgram
return decisionMatrix.currentParams
}
@computed get queryParams(): ExplorerFullQueryParams {
if (!this.grapher) return {}
if (window.location.href.includes(EXPLORERS_PREVIEW_ROUTE))
localStorage.setItem(
UNSAVED_EXPLORER_PREVIEW_QUERYPARAMS +
this.explorerProgram.slug,
JSON.stringify(this.currentChoiceParams)
)
let url = Url.fromQueryParams(
omitUndefinedValues({
...this.grapher.changedParams,
pickerSort: this.entityPickerSort,
pickerMetric: this.entityPickerMetric,
hideControls: this.initialQueryParams.hideControls || undefined,
...this.currentChoiceParams,
})
)
url = setSelectedEntityNamesParam(
url,
this.selection.hasSelection
? this.selection.selectedEntityNames
: undefined
)
return url.queryParams as ExplorerFullQueryParams
}
@computed get currentUrl(): Url {
if (this.props.isPreview) return Url.fromQueryParams(this.queryParams)
return Url.fromURL(this.baseUrl).setQueryParams(this.queryParams)
}
private bindToWindow() {
// There is a surprisingly considerable performance overhead to updating the url
// while animating, so we debounce to allow e.g. smoother timelines
const pushParams = () => setWindowUrl(this.currentUrl)
const debouncedPushParams = debounce(pushParams, 100)
this.disposers.push(
reaction(
() => this.queryParams,
() =>
this.grapher?.debounceMode
? debouncedPushParams()
: pushParams()
)
)
}
private get panels() {
return this.explorerProgram.decisionMatrix.choicesWithAvailability.map(
(choice) => (
<ExplorerControlPanel
key={choice.title}
explorerSlug={this.explorerProgram.slug}
choice={choice}
onChange={this.onChangeChoice(choice.title)}
isMobile={this.isNarrow}
/>
)
)
}
onChangeChoice = (choiceTitle: string) => (value: string) => {
const { currentlySelectedGrapherRow } = this.explorerProgram
this.explorerProgram.decisionMatrix.setValueCommand(choiceTitle, value)
if (currentlySelectedGrapherRow)
this.reactToUserChangingSelection(currentlySelectedGrapherRow)
}
private renderHeaderElement() {
return (
<div className="ExplorerHeaderBox">
<div></div>
<div className="ExplorerTitle">
{this.explorerProgram.explorerTitle}
</div>
<div
className="ExplorerSubtitle"
dangerouslySetInnerHTML={{
__html: this.explorerProgram.explorerSubtitle || "",
}}
></div>
</div>
)
}
@observable private isNarrow = isNarrow()
@computed private get isInIFrame() {
return isInIFrame()
}
@computed private get showExplorerControls() {
if (!this.props.isEmbeddedInAnOwidPage && !this.isInIFrame) return true
// Only allow hiding controls on embedded pages
return !(
this.explorerProgram.hideControls ||
this.initialQueryParams.hideControls === "true"
)
}
@computed private get downloadDataLink(): string | undefined {
return this.explorerProgram.downloadDataLink
}
@observable
private grapherContainerRef: React.RefObject<HTMLDivElement> =
React.createRef()
@observable.ref private grapherBounds = DEFAULT_BOUNDS
@observable.ref
private grapherRef: React.RefObject<Grapher> = React.createRef()
private renderControlBar() {
return (
<ExplorerControlBar
isMobile={this.isNarrow}
showControls={this.showMobileControlsPopup}
closeControls={this.closeControls}
>
{this.panels}
</ExplorerControlBar>
)
}
private renderEntityPicker() {
return (
<EntityPicker
key="entityPicker"
manager={this}
isDropdownMenu={this.isNarrow}
/>
)
}
private onResizeThrottled?: () => void
@action.bound private toggleMobileControls() {
this.showMobileControlsPopup = !this.showMobileControlsPopup
}
@action.bound private onResize() {
const oldIsNarrow = this.isNarrow
this.isNarrow = isNarrow()
this.updateGrapherBounds()
// If we changed between narrow and wide mode, we need to wait for CSS changes to kick in
// to properly calculate the new grapher bounds
if (this.isNarrow !== oldIsNarrow)
window.setTimeout(() => this.updateGrapherBounds(), 0)
}
// Todo: add better logic to maximize the size of the Grapher
private updateGrapherBounds() {
const grapherContainer = this.grapherContainerRef.current
if (grapherContainer)
this.grapherBounds = new Bounds(
0,
0,
grapherContainer.clientWidth,
grapherContainer.clientHeight
)
}
@observable private showMobileControlsPopup = false
private get mobileCustomizeButton() {
return (
<a
className="btn btn-primary mobile-button"
onClick={this.toggleMobileControls}
data-track-note="covid-customize-chart"
>
<FontAwesomeIcon icon={faChartLine} /> Customize chart
</a>
)
}
@action.bound private closeControls() {
this.showMobileControlsPopup = false
}
// todo: add tests for this and better tests for this class in general
@computed private get showHeaderElement() {
return (
this.showExplorerControls &&
this.explorerProgram.explorerTitle &&
this.panels.length > 0
)
}
render() {
const { showExplorerControls, showHeaderElement } = this
return (
<div
className={classNames({
Explorer: true,
"mobile-explorer": this.isNarrow,
HideControls: !showExplorerControls,
"is-embed": this.props.isEmbeddedInAnOwidPage,
})}
>
{showHeaderElement && this.renderHeaderElement()}
{showHeaderElement && this.renderControlBar()}
{showExplorerControls && this.renderEntityPicker()}
{showExplorerControls &&
this.isNarrow &&
this.mobileCustomizeButton}
<div className="ExplorerFigure" ref={this.grapherContainerRef}>
<Grapher
bounds={this.grapherBounds}
enableKeyboardShortcuts={true}
manager={this}
ref={this.grapherRef}
/>
</div>
</div>
)
}
@computed get editUrl() {
return `${EXPLORERS_ROUTE_FOLDER}/${this.props.slug}`
}
@computed get baseUrl() {
return `${BAKED_BASE_URL}/${EXPLORERS_ROUTE_FOLDER}/${this.props.slug}`
}
@computed get canonicalUrl() {
return this.props.canonicalUrl ?? this.currentUrl.fullUrl
}
@computed get embedDialogUrl() {
return this.currentUrl.updateQueryParams({
hideControls: this.embedDialogHideControls.toString(),
}).fullUrl
}
@action.bound embedDialogToggleHideControls() {
this.embedDialogHideControls = !this.embedDialogHideControls
}
@computed get embedDialogAdditionalElements() {
return (
<div style={{ marginTop: ".5rem" }}>
<label>
<input
type="checkbox"
checked={this.embedDialogHideControls}
onChange={this.embedDialogToggleHideControls}
/>{" "}
Hide controls
</label>
</div>
)
}
@computed get grapherTable() {
return this.grapher?.tableAfterAuthorTimelineFilter
}
@observable entityPickerMetric? = this.initialQueryParams.pickerMetric
@observable entityPickerSort? = this.initialQueryParams.pickerSort
@observable.ref entityPickerTable?: OwidTable
@observable.ref entityPickerTableIsLoading: boolean = false
private futureEntityPickerTable = new PromiseSwitcher<OwidTable>({
onResolve: (table) => {
this.entityPickerTable = table
this.entityPickerTableIsLoading = false
},
onReject: () => {
this.entityPickerTableIsLoading = false
},
})
private updateEntityPickerTable(): void {
if (this.entityPickerMetric) {
this.entityPickerTableIsLoading = true
this.futureEntityPickerTable.set(
this.tableLoader.get(
this.getTableSlugOfColumnSlug(this.entityPickerMetric)
)
)
}
}
setEntityPicker({
metric,
sort,
}: { metric?: string; sort?: SortOrder } = {}) {
if (metric) this.entityPickerMetric = metric
if (sort) this.entityPickerSort = sort
}
private tableSlugHasColumnSlug(
tableSlug: TableSlug | undefined,
columnSlug: ColumnSlug
) {
const columnDefsByTableSlug = this.explorerProgram.columnDefsByTableSlug
return !!columnDefsByTableSlug
.get(tableSlug)
?.find((def) => def.slug === columnSlug)
}
private getTableSlugOfColumnSlug(
columnSlug: ColumnSlug
): TableSlug | undefined {
// In most cases, column slugs will be duplicated in the tables, e.g. entityName.
// Prefer the current Grapher table if it contains the column slug.
const grapherTableSlug = this.explorerProgram.grapherConfig.tableSlug
if (this.tableSlugHasColumnSlug(grapherTableSlug, columnSlug)) {
return grapherTableSlug
}
// ...otherwise, search all tables for the column slug
return this.explorerProgram.tableSlugs.find((tableSlug) =>
this.tableSlugHasColumnSlug(tableSlug, columnSlug)
)
}
@computed get entityPickerColumnDefs(): CoreColumnDef[] {
const allColumnDefs = uniqBy(
flatten(
Array.from(this.explorerProgram.columnDefsByTableSlug.values())
),
(def) => def.slug
)
if (this.explorerProgram.pickerColumnSlugs) {
const columnDefsBySlug = keyMap(allColumnDefs, (def) => def.slug)
// Preserve the order of columns in the Explorer `pickerColumnSlugs`
return excludeUndefined(
this.explorerProgram.pickerColumnSlugs.map((slug) =>
columnDefsBySlug.get(slug)
)
)
} else {
const discardColumnTypes = new Set([
ColumnTypeNames.Year,
ColumnTypeNames.Date,
ColumnTypeNames.Day,
ColumnTypeNames.EntityId,
ColumnTypeNames.EntityCode,
])
return allColumnDefs.filter(
(def) =>
def.type === undefined || !discardColumnTypes.has(def.type)
)
}
}
@computed get requiredColumnSlugs() {
return this.grapher?.newSlugs ?? []
}
}
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