ttabs-svelte/dist/ttabs/validation/default-validator.js

A flexible layout management system with draggable, resizable tiles and tabs for Svelte applications. Like in VSCode

import { LayoutValidationError } from './validation-types';
/**
 * Default validator that performs basic integrity checks on a ttabs layout
 * @param ttabs The ttabs instance to validate
 * @returns true if layout is valid, throws LayoutValidationError otherwise
 */
export const defaultValidator = (ttabs) => {
    const tiles = ttabs.getTiles();
    // Check for root grid
    const rootGridId = ttabs.rootGridId;
    if (!rootGridId || !tiles[rootGridId]) {
        throw new LayoutValidationError("Missing root grid", "MISSING_ROOT_GRID");
    }
    // Check for orphaned tiles (tiles with non-existent parents)
    const orphanedTiles = Object.values(tiles).filter(tile => tile.parent && !tiles[tile.parent]);
    if (orphanedTiles.length > 0) {
        throw new LayoutValidationError(`Found ${orphanedTiles.length} orphaned tiles`, "ORPHANED_TILES");
    }
    // Check for basic structure (grid should have at least one row)
    const rootGrid = tiles[rootGridId];
    if (!rootGrid.rows || rootGrid.rows.length === 0) {
        throw new LayoutValidationError("Root grid has no rows", "EMPTY_ROOT_GRID");
    }
    // Check that rows have columns
    const emptyRows = rootGrid.rows.filter(rowId => {
        const row = tiles[rowId];
        return !row.columns || row.columns.length === 0;
    });
    if (emptyRows.length > 0) {
        throw new LayoutValidationError(`Found ${emptyRows.length} empty rows`, "EMPTY_ROWS");
    }
    return true;
};