@eclipse-scout/chart/src/table/controls/ChartTableUserFilter.ts

Eclipse Scout chart

/*
 * Copyright (c) 2010, 2023 BSI Business Systems Integration AG
 *
 * This program and the accompanying materials are made
 * available under the terms of the Eclipse Public License 2.0
 * which is available at https://www.eclipse.org/legal/epl-2.0/
 *
 * SPDX-License-Identifier: EPL-2.0
 */
import {arrays, TableMatrix, TableMatrixKeyAxis, TableRow, TableUserFilter, TableUserFilterAddedEventData} from '@eclipse-scout/core';
import {ChartTableUserFilterModel} from '../../index';
import {TableControlDeterministicKey} from './ChartTableControl';

export class ChartTableUserFilter extends TableUserFilter implements ChartTableUserFilterModel {
  declare model: ChartTableUserFilterModel;

  text: string;
  xAxis: TableMatrixKeyAxis;
  yAxis: TableMatrixKeyAxis;
  filters: { deterministicKey: TableControlDeterministicKey }[];
  columnIdX: string;
  columnIdY: string;

  constructor() {
    super();
    this.filterType = ChartTableUserFilter.TYPE;
    this.text = null;
    this.xAxis = null;
    this.yAxis = null;
    this.filters = [];
    this.columnIdX = null;
    this.columnIdY = null;
  }

  static TYPE = 'CHART';

  createLabel() {
    return this.text;
  }

  override createFilterAddedEventData(): ChartTableUserFilterAddedEventData {
    let data: ChartTableUserFilterAddedEventData = super.createFilterAddedEventData();
    data.text = this.text;
    data.filters = this.filters;
    data.columnIdX = (this.xAxis && this.xAxis.column) ? this.xAxis.column.id : null;
    data.columnIdY = (this.yAxis && this.yAxis.column) ? this.yAxis.column.id : null;
    return data;
  }

  calculate() {
    let matrix = new TableMatrix(this.table, this.session);
    let columnX = this.table.columnById(this.columnIdX);
    let axisGroupX = columnX.createFilter().axisGroup();
    this.xAxis = matrix.addAxis(columnX, axisGroupX);
    if (this.columnIdY) {
      let columnY = this.table.columnById(this.columnIdY);
      let axisGroupY = columnY.createFilter().axisGroup();
      this.yAxis = matrix.addAxis(columnY, axisGroupY);
    }
    matrix.calculate();
  }

  accept(row: TableRow): boolean {
    if (!this.xAxis) {
      // Lazy calculation. It is not possible on init, because the table is not rendered yet.
      this.calculate();
    }
    let value = this.xAxis.column.cellValueOrTextForCalculation(row);
    let deterministicKeyX = this.xAxis.normDeterministic(value);

    if (!this.yAxis) {
      return this.filters.filter(filter => filter.deterministicKey === deterministicKeyX).length > 0;
    }
    value = this.yAxis.column.cellValueOrTextForCalculation(row);
    let deterministicKeyY = this.yAxis.normDeterministic(value);
    return this.filters.filter(filter => arrays.equals(filter.deterministicKey as (number | string)[], [deterministicKeyX, deterministicKeyY])).length > 0;
  }
}

export type ChartTableUserFilterAddedEventData = TableUserFilterAddedEventData & {
  filters?: { deterministicKey: TableControlDeterministicKey }[];
  columnIdX?: string;
  columnIdY?: string;
};