Table Design

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This article describes the Table Design in the Components Library.

Overview

A Table Component is an arrangement of data in rows and columns, or possibly in a more complex structure (with sorting, filtering, pagination, row selections, infinite scrolling, etc.). It is an essential building block of a user interface.

A basic Table Component is <spy-table [config]="config"></spy-table> where config is:

  • dataSource - the Datasource configuration from which the data is taken.
  • columns - an array of columns configuration.
const config: TableConfig = {
    dataSource: {
        // transforms input data via Data Transformer service
        type: DatasourceType,
        transform?: DataTransformerConfig,
    },
    columns: [
        { id: 'col1', title: 'Column #1' },
        { id: 'col2', title: 'Column #2' },
        { id: 'col3', title: 'Column #3' },
    ],
};

Architecture

Check out the table architecture diagram for better understanding:

Table Architecture

Configuration

The Table Component is configured via Table Configuration that sets up how the table will behave and look like.

Datasources

To render data, the Table must receive it via Datasources that are registered by the user and then configured using the Table Configuration.

Features

Every other piece of functionality is extracted into the Table Feature:

  • Table Feature is an Angular Component that encapsulates a specific extension of the Core Table.
  • Core Table contains specific placeholders in its view that Table Feature may target to render its piece of UI.
  • Most of the common table functionality already exists as the Table Feature and may be used in the project.

To use a Feature component, register an Angular Module that implements the ModuleWithFeature interface in the Root Module using TableModule.withFeatures() under the key that will serve as its configuration key:

@NgModule({
    imports: [
        TableModule.withFeatures({
            pagination: () => import('@spryker/table.feature.pagination').then(
                (m) => m.TablePaginationFeatureModule,
            ),
        }),
    ],
})
export class AppModule {}

Columns

Columns in a Table are defined by the Column Type and rendered within the columns (text, image, link, etc.). A new Column Type may be created and registered to the table.

The Column component must implement TableColumn interface with the defined config and then be registered to the Root Module via TableModule.withColumnComponents():

@NgModule({
    imports: [
        TableModule.withColumnComponents({
            text: TableColumnTextComponent,
        }),

        // Table Column Type Modules
        TableColumnTextModule,
    ],
})
export class AppModule {}

Filters

Table Component does not contain any filters a table usually will have (filtering, searching, etc.). The Core Table Component has just a view of the columns and data and has built-in sorting.

To use Filter components, the Table Module must implement a specific interface (TableConfig) and then be registered to the Root Module via TableModule.withFilterComponents():

@NgModule({
    imports: [
        TableFiltersFeatureModule.withFilterComponents({
            select: TableFilterSelectComponent,
        }),

        // Table Filter Modules
        TableFilterSelectModule,
    ],
})
export class AppModule {}

Actions

There is a way to trigger some Actions while user interacts with the Table.

A few common Table Features that can trigger actions are available in the UI library:

  • Row actions - renders a dropdown menu that contains actions applicable to the table row and on click triggers an Action which must be registered.
  • Batch actions - allows triggering batch/multiple actions from rows.

Interfaces

Below you can find interfaces for the Table configuration:

export interface TableColumn extends Partial<TableColumnTypeDef> {
    id: string;
    title: string;
    width?: string;
    multiRenderMode?: boolean;
    multiRenderModeLimit?: number;
    emptyValue?: string;
    sortable?: boolean;
    searchable?: boolean;
}

export interface TableColumnTypeDef {
    type?: TableColumnType;
    typeOptions?: TableColumnTypeOptions;
    typeChildren?: TableColumnTypeDef[];
    typeOptionsMappings?: TableColumnTypeOptionsMappings;
}

export interface TableColumnTypeOptions {
    [key: string]: any;
}

interface TableColumnTypeOptionsMappings {
    // Map of option values to new values
    [optionName: string]: Record<string, any>;
}

export interface TableColumnTypeRegistry {
    // Key is type string - value is type config class
    'layout-flat': LayoutFlatConfig;
}

export type TableColumnType = keyof TableColumnTypeRegistry;

export interface TableHeaderContext {
    config: TableColumn;
    i: number;
}

export interface TableColumnContext {
    value: TableDataValue;
    row: TableDataRow;
    config: TableColumn;
    i: number;
    j: number;
}

export interface TableColumnTplContext extends TableColumnContext {
    $implicit: TableColumnContext['value'];
}

export interface TableColumnComponent<C = any> {
    config?: C;
    context?: TableColumnContext;
}

export type TableColumnComponentDeclaration = {
    [P in keyof TableColumnTypeRegistry]?: Type<TableColumnComponent<TableColumnTypeRegistry[P] extends object
        ? TableColumnTypeRegistry[P]
        : any>>;
};

export type TableColumns = TableColumn[];

export type TableDataValue = unknown | unknown[];

export type TableDataRow = Record<TableColumn['id'], TableDataValue>;

export interface TableData<T extends TableDataRow = TableDataRow> {
    data: T[];
    total: number;
    page: number;
    pageSize: number;
}

export interface TableConfig {
    dataSource: DatasourceConfig;
    columnsUrl?: string;
    columns?: TableColumns;

    // Features may expect it's config under it's namespace
    [featureName: string]: TableFeatureConfig | unknown;
}

export type ColumnsTransformer = (
    cols: TableColumns,
) => Observable<TableColumns>;

export type TableDataConfig = Record<string, unknown>;

export interface SortingCriteria {
    sortBy?: string;
    sortDirection?: 'asc' | 'desc';
}

export type TableEvents = Record<string, ((data: unknown) => void) | undefined>;

export interface TableComponent {
    tableId?: string;
    config?: TableConfig;
    events: TableEvents;
    config$: Observable<TableConfig>;
    columns$: Observable<TableColumns>;
    data$: Observable<TableData>;
    isLoading$: Observable<boolean>;
    tableId$: Observable<string>;
    features$: Observable<TableFeatureComponent<TableFeatureConfig>[]>;
    tableElementRef: ElementRef<HTMLElement>;
    injector: Injector;
    updateRowClasses(rowIdx: string, classes: Record<string, boolean>): void;
    setRowClasses(rowIdx: string, classes: Record<string, boolean>): void;
    on(feature: string, eventName?: string): Observable<unknown>;
    findFeatureByName(name: string): Observable<TableFeatureComponent>;
    findFeatureByType<T extends TableFeatureComponent>(
        type: Type<T>,
    ): Observable<T>;
}

export enum TableFeatureLocation {
    top = 'top',
    beforeTable = 'before-table',
    header = 'header',
    headerExt = 'header-ext',
    beforeRows = 'before-rows',
    beforeColsHeader = 'before-cols-header',
    beforeCols = 'before-cols',
    cell = 'cell',
    afterCols = 'after-cols',
    afterColsHeader = 'after-cols-header',
    afterRows = 'after-rows',
    afterTable = 'after-table',
    bottom = 'bottom',
    hidden = 'hidden',
}

export interface TableRowActionRegistry {
    // Key is action string - value is action options type
}

export type TableRowAction = keyof TableRowActionRegistry;

export interface TableRowActionHandler {
    handleAction(actionEvent: TableActionTriggeredEvent): void;
}

export interface TableRowActionsDeclaration {
    [type: string]: TableRowActionHandler;
}

export interface TableRowClickEvent {
    row: TableDataRow;
    event: Event;
}