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EntityCode,
EntityId,
EntityName,
} from "../../coreTable/OwidTableConstants"
import { difference, mapBy } from "../../clientUtils/Util"
import { isPresent } from "../../clientUtils/isPresent"
import { action, computed, observable } from "mobx"
interface Entity {
entityName: EntityName
entityId?: EntityId
entityCode?: EntityCode
}
export class SelectionArray {
constructor(
selectedEntityNames: EntityName[] = [],
availableEntities: Entity[] = [],
entityType = "country"
) {
this.selectedEntityNames = selectedEntityNames.slice()
this.availableEntities = availableEntities.slice()
this.entityType = entityType
}
@observable entityType: string
@observable selectedEntityNames: EntityName[]
@observable private availableEntities: Entity[]
@computed get availableEntityNames(): string[] {
return this.availableEntities.map((entity) => entity.entityName)
}
@computed get availableEntityNameSet(): Set<string> {
return new Set(this.availableEntityNames)
}
@computed get entityNameToIdMap(): Map<string, number | undefined> {
return mapBy(
this.availableEntities,
(e) => e.entityName,
(e) => e.entityId
)
}
@computed get entityCodeToNameMap(): Map<string | undefined, string> {
return mapBy(
this.availableEntities,
(e) => e.entityCode,
(e) => e.entityName
)
}
@computed get entityIdToNameMap(): Map<number | undefined, string> {
return mapBy(
this.availableEntities,
(e) => e.entityId,
(e) => e.entityName
)
}
@computed get hasSelection(): boolean {
return this.selectedEntityNames.length > 0
}
@computed get unselectedEntityNames(): string[] {
return difference(this.availableEntityNames, this.selectedEntityNames)
}
@computed get numSelectedEntities(): number {
return this.selectedEntityNames.length
}
@computed get selectedSet(): Set<EntityName> {
return new Set<EntityName>(this.selectedEntityNames)
}
@computed get allSelectedEntityIds(): EntityId[] {
const map = this.entityNameToIdMap
return this.selectedEntityNames
.map((name) => map.get(name))
.filter(isPresent)
}
// Clears and sets selected entities
@action.bound setSelectedEntities(entityNames: EntityName[]): this {
this.clearSelection()
return this.addToSelection(entityNames)
}
@action.bound addToSelection(entityNames: EntityName[]): this {
this.selectedEntityNames = this.selectedEntityNames.concat(entityNames)
return this
}
@action.bound addAvailableEntityNames(entities: Entity[]): this {
this.availableEntities.push(...entities)
return this
}
@action.bound setSelectedEntitiesByCode(entityCodes: EntityCode[]): this {
const map = this.entityCodeToNameMap
const codesInData = entityCodes.filter((code) => map.has(code))
return this.setSelectedEntities(
codesInData.map((code) => map.get(code)!)
)
}
@action.bound setSelectedEntitiesByEntityId(entityIds: EntityId[]): this {
const map = this.entityIdToNameMap
return this.setSelectedEntities(entityIds.map((id) => map.get(id)!))
}
@action.bound selectAll(): this {
return this.addToSelection(this.unselectedEntityNames)
}
@action.bound clearSelection(): void {
this.selectedEntityNames = []
}
@action.bound toggleSelection(entityName: EntityName): this {
return this.selectedSet.has(entityName)
? this.deselectEntity(entityName)
: this.selectEntity(entityName)
}
@computed get numAvailableEntityNames(): number {
return this.availableEntityNames.length
}
@action.bound selectEntity(entityName: EntityName): this {
if (!this.selectedSet.has(entityName))
return this.addToSelection([entityName])
return this
}
// Mainly for testing
@action.bound selectSample(howMany = 1): this {
return this.setSelectedEntities(
this.availableEntityNames.slice(0, howMany)
)
}
@action.bound deselectEntity(entityName: EntityName): this {
this.selectedEntityNames = this.selectedEntityNames.filter(
(name) => name !== entityName
)
return this
}
}
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