devextreme/esm/__internal/grids/tree_list/m_columns_controller.js

HTML5 JavaScript Component Suite for Responsive Web Development

/**
 * DevExtreme (esm/__internal/grids/tree_list/m_columns_controller.js)
 * Version: 24.2.6
 * Build date: Mon Mar 17 2025
 *
 * Copyright (c) 2012 - 2025 Developer Express Inc. ALL RIGHTS RESERVED
 * Read about DevExtreme licensing here: https://js.devexpress.com/Licensing/
 */
import {
    isDefined
} from "../../../core/utils/type";
import {
    ColumnsController,
    columnsControllerModule
} from "../../grids/grid_core/columns_controller/m_columns_controller";
import treeListCore from "./m_core";
class TreeListColumnsController extends ColumnsController {
    _getFirstItems(dataSourceAdapter) {
        return super._getFirstItems(dataSourceAdapter).map((node => node.data))
    }
    getFirstDataColumnIndex() {
        const visibleColumns = this.getVisibleColumns();
        const visibleColumnsLength = visibleColumns.length;
        let firstDataColumnIndex = 0;
        for (let i = 0; i <= visibleColumnsLength - 1; i++) {
            if (!isDefined(visibleColumns[i].command)) {
                firstDataColumnIndex = visibleColumns[i].index;
                break
            }
        }
        return firstDataColumnIndex
    }
}
treeListCore.registerModule("columns", {
    defaultOptions: columnsControllerModule.defaultOptions,
    controllers: {
        columns: TreeListColumnsController
    }
});