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feat(a11y): add data table for screen readers (sunburst, treemap, ici…
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102 changes: 102 additions & 0 deletions
102
...ges/charts/src/chart_types/partition_chart/state/selectors/get_screen_reader_data.test.ts
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,102 @@ | ||
| /* | ||
| * Licensed to Elasticsearch B.V. under one or more contributor | ||
| * license agreements. See the NOTICE file distributed with | ||
| * this work for additional information regarding copyright | ||
| * ownership. Elasticsearch B.V. licenses this file to you under | ||
| * the Apache License, Version 2.0 (the "License"); you may | ||
| * not use this file except in compliance with the License. | ||
| * You may obtain a copy of the License at | ||
| * | ||
| * http://www.apache.org/licenses/LICENSE-2.0 | ||
| * | ||
| * Unless required by applicable law or agreed to in writing, | ||
| * software distributed under the License is distributed on an | ||
| * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY | ||
| * KIND, either express or implied. See the License for the | ||
| * specific language governing permissions and limitations | ||
| * under the License. | ||
| */ | ||
|
|
||
| import { Store } from 'redux'; | ||
|
|
||
| import { MockSeriesSpec } from '../../../../mocks/specs/specs'; | ||
| import { MockStore } from '../../../../mocks/store'; | ||
| import { GlobalChartState } from '../../../../state/chart_state'; | ||
| import { PrimitiveValue } from '../../layout/utils/group_by_rollup'; | ||
| import { getScreenReaderDataSelector } from './get_screen_reader_data'; | ||
|
|
||
| describe('Get screen reader data', () => { | ||
| type TestDatum = [string, string, string, number]; | ||
| const spec1 = MockSeriesSpec.sunburst({ | ||
| data: [ | ||
| ['aaa', 'aa', '1', 1], | ||
| ['aaa', 'aa', '3', 1], | ||
| ['aaa', 'bb', '4', 1], | ||
| ], | ||
| valueAccessor: (d: TestDatum) => d[3], | ||
| layers: [ | ||
| { | ||
| groupByRollup: (datum: TestDatum) => datum[0], | ||
| nodeLabel: (d: PrimitiveValue) => String(d), | ||
| }, | ||
| { | ||
| groupByRollup: (datum: TestDatum) => datum[1], | ||
| nodeLabel: (d: PrimitiveValue) => String(d), | ||
| }, | ||
| { | ||
| groupByRollup: (datum: TestDatum) => datum[2], | ||
| nodeLabel: (d: PrimitiveValue) => String(d), | ||
| }, | ||
| ], | ||
| }); | ||
|
|
||
| const specNoSlice = MockSeriesSpec.sunburst({ | ||
| data: [], | ||
| valueAccessor: (d: TestDatum) => d[3], | ||
| layers: [ | ||
| { | ||
| groupByRollup: (datum: TestDatum) => datum[0], | ||
| nodeLabel: (d: PrimitiveValue) => String(d), | ||
| }, | ||
| { | ||
| groupByRollup: (datum: TestDatum) => datum[1], | ||
| nodeLabel: (d: PrimitiveValue) => String(d), | ||
| }, | ||
| { | ||
| groupByRollup: (datum: TestDatum) => datum[2], | ||
| nodeLabel: (d: PrimitiveValue) => String(d), | ||
| }, | ||
| ], | ||
| }); | ||
| let store: Store<GlobalChartState>; | ||
|
|
||
| beforeEach(() => { | ||
| store = MockStore.default(); | ||
| }); | ||
|
|
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| it('should test defaults', () => { | ||
| MockStore.addSpecs([spec1], store); | ||
| const expected = getScreenReaderDataSelector(store.getState()); | ||
| expect(expected).toEqual({ | ||
| data: [ | ||
| { depth: 1, label: 'aaa', panelTitle: '', parentName: 'none', percentage: '100%', value: 3, valueText: '3' }, | ||
| { depth: 2, label: 'aa', panelTitle: '', parentName: 'aaa', percentage: '67%', value: 2, valueText: '2' }, | ||
| { depth: 3, label: '1', panelTitle: '', parentName: 'aa', percentage: '33%', value: 1, valueText: '1' }, | ||
| { depth: 3, label: '3', panelTitle: '', parentName: 'aa', percentage: '33%', value: 1, valueText: '1' }, | ||
| { depth: 2, label: 'bb', panelTitle: '', parentName: 'aaa', percentage: '33%', value: 1, valueText: '1' }, | ||
| { depth: 3, label: '4', panelTitle: '', parentName: 'bb', percentage: '33%', value: 1, valueText: '1' }, | ||
| ], | ||
| hasMultipleLayers: true, | ||
| isSmallMultiple: false, | ||
| }); | ||
| }); | ||
| it('should compute screen reader data for no slices in pie', () => { | ||
| MockStore.addSpecs([specNoSlice], store); | ||
| const expected = getScreenReaderDataSelector(store.getState()); | ||
| expect(expected).toEqual({ | ||
| data: [], | ||
| hasMultipleLayers: true, | ||
| isSmallMultiple: false, | ||
| }); | ||
| }); | ||
| }); |
91 changes: 91 additions & 0 deletions
91
packages/charts/src/chart_types/partition_chart/state/selectors/get_screen_reader_data.ts
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,91 @@ | ||
| /* | ||
| * Licensed to Elasticsearch B.V. under one or more contributor | ||
| * license agreements. See the NOTICE file distributed with | ||
| * this work for additional information regarding copyright | ||
| * ownership. Elasticsearch B.V. licenses this file to you under | ||
| * the Apache License, Version 2.0 (the "License"); you may | ||
| * not use this file except in compliance with the License. | ||
| * You may obtain a copy of the License at | ||
| * | ||
| * http://www.apache.org/licenses/LICENSE-2.0 | ||
| * | ||
| * Unless required by applicable law or agreed to in writing, | ||
| * software distributed under the License is distributed on an | ||
| * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY | ||
| * KIND, either express or implied. See the License for the | ||
| * specific language governing permissions and limitations | ||
| * under the License. | ||
| */ | ||
|
|
||
| import createCachedSelector from 're-reselect'; | ||
|
|
||
| import { getChartIdSelector } from '../../../../state/selectors/get_chart_id'; | ||
| import { ShapeViewModel } from '../../layout/types/viewmodel_types'; | ||
| import { STATISTICS_KEY } from '../../layout/utils/group_by_rollup'; | ||
| import { PartitionSpec } from '../../specs'; | ||
| import { partitionMultiGeometries } from './geometries'; | ||
| import { getPartitionSpecs } from './get_partition_specs'; | ||
|
|
||
| /** @internal */ | ||
| export interface PartitionSectionData { | ||
| panelTitle?: string; | ||
| label: string; | ||
| parentName: string | undefined; | ||
| depth: number; | ||
| percentage: string; | ||
| value: number; | ||
| valueText: string; | ||
| } | ||
|
|
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| /** @internal */ | ||
| export interface PartitionData { | ||
| hasMultipleLayers: boolean; | ||
| isSmallMultiple: boolean; | ||
| data: PartitionSectionData[]; | ||
| } | ||
|
|
||
| /** | ||
| * @internal | ||
| */ | ||
| const getScreenReaderDataForPartitions = ( | ||
| [{ valueFormatter }]: PartitionSpec[], | ||
| shapeViewModels: ShapeViewModel[], | ||
| ): PartitionSectionData[] => { | ||
| return shapeViewModels.flatMap(({ quadViewModel, layers, panelTitle }) => | ||
| quadViewModel.map(({ depth, value, dataName, parent, path }) => { | ||
| const label = layers[depth - 1]?.nodeLabel?.(dataName) ?? dataName; | ||
| const parentValue = path.length > 1 ? path[path.length - 2].value : undefined; | ||
| const parentName = | ||
| depth > 1 && parentValue ? layers[depth - 2]?.nodeLabel?.(parentValue) ?? path[path.length - 1].value : 'none'; | ||
|
|
||
| return { | ||
| panelTitle, | ||
| depth, | ||
| label, | ||
| parentName, | ||
| percentage: `${Math.round((value / parent[STATISTICS_KEY].globalAggregate) * 100)}%`, | ||
| value, | ||
| valueText: valueFormatter ? valueFormatter(value) : `${value}`, | ||
| }; | ||
| }), | ||
| ); | ||
| }; | ||
|
|
||
| /** @internal */ | ||
| export const getScreenReaderDataSelector = createCachedSelector( | ||
| [getPartitionSpecs, partitionMultiGeometries], | ||
| (specs, shapeViewModel): PartitionData => { | ||
| if (specs.length === 0) { | ||
| return { | ||
| hasMultipleLayers: false, | ||
| isSmallMultiple: false, | ||
| data: [], | ||
| }; | ||
| } | ||
| return { | ||
| hasMultipleLayers: specs[0].layers.length > 1, | ||
| isSmallMultiple: shapeViewModel.length > 1, | ||
| data: getScreenReaderDataForPartitions(specs, shapeViewModel), | ||
| }; | ||
| }, | ||
| )(getChartIdSelector); |
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