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cell-column-summary.ts
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cell-column-summary.ts
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import Component from '@glimmer/component';
import { type CellColumnSummarySignature } from '../../../../interfaces/components/models-table/themes/default/cell-column-summary-signature.interface';
const sumBy = (collection: number[]): number =>
collection ? collection.reduce((a, b) => a + b, 0) : 0;
const avgBy = (collection: number[], avg: number): number => {
const count = collection.length;
return count ? avg / count : 0;
};
const minBy = (collection: number[]): number | null =>
collection ? Math.min(...collection) : null;
const maxBy = (collection: number[]): number | null =>
collection ? Math.max(...collection) : null;
const medianBy = (collection: number[]): number | null => {
if (!collection.length) {
return null;
}
collection = collection.slice().sort((a, b) => a - b);
const lowMiddle = Math.floor((collection.length - 1) / 2);
const highMiddle = Math.ceil((collection.length - 1) / 2);
return ((collection[lowMiddle] || 0) + (collection[highMiddle] || 0)) / 2;
};
/**
* Component for table-footer cells. Used as column-summary.
*
* It yields several properties:
*
* * {@link DefaultTheme.CellColumnSummary.minSelected | minSelected}
* * {@link DefaultTheme.CellColumnSummary.maxSelected | maxSelected}
* * {@link DefaultTheme.CellColumnSummary.sumSelected | sumSelected}
* * {@link DefaultTheme.CellColumnSummary.avgSelected | avgSelected}
* * {@link DefaultTheme.CellColumnSummary.medianSelected | medianSelected}
* * {@link DefaultTheme.CellColumnSummary.minData | minData}
* * {@link DefaultTheme.CellColumnSummary.maxData | maxData}
* * {@link DefaultTheme.CellColumnSummary.sumData | sumData}
* * {@link DefaultTheme.CellColumnSummary.avgData | avgData}
* * {@link DefaultTheme.CellColumnSummary.medianData | medianData}
*
* Component should be used only for column with set `propertyName`.
*
* Component should be extended.
*/
export default class CellColumnSummary extends Component<CellColumnSummarySignature> {
/**
* Min of mapped `selectedItems`
*/
get minSelected(): number | null {
return minBy(this.args.mappedSelectedItems);
}
/**
* Min of mapped `data`
*/
get minData(): number | null {
return minBy(this.args.mappedData);
}
/**
* Max of mapped `selectedItems`
*/
get maxSelected(): number | null {
return maxBy(this.args.mappedSelectedItems);
}
/**
* Max of mapped `data`
*/
get maxData(): number | null {
return maxBy(this.args.mappedData);
}
/**
* Sum of mapped `selectedItems`
*/
get sumSelected(): number {
return sumBy(this.args.mappedSelectedItems);
}
/**
* Sum of mapped `data`
*/
get sumData(): number {
return sumBy(this.args.mappedData);
}
/**
* Average of mapped `selectedItems`
*/
get avgSelected(): number {
return avgBy(this.args.mappedSelectedItems, this.sumSelected);
}
/**
* Average of mapped `data`
*/
get avgData(): number {
return avgBy(this.args.mappedData, this.sumData);
}
/**
* Median of mapped `selectedItems`
*/
get medianSelected(): number | null {
return medianBy(this.args.mappedSelectedItems);
}
/**
* Median of mapped `data`
*/
get medianData(): number | null {
return medianBy(this.args.mappedData);
}
}