(Last Update of this info: 9th of February 2025)

MaHop DataTable and more - What is included?

• Widget to display a DataTable, ListView with Virtual Scrolling

• With a lot of functionality build in

  • perfect virtual scrolling even with individual row heights
  • drag and drop reorder
  • drag and drop from and to other widgets
  • sorting and filtering
  • column reorder and resize
  • saving the layout (current column width, positions and visibility) to a JSON string
  • inline edit, multiline edit
  • selection with different selection modes
  • jump to row
  • ...
  • and much more - see demo app and features section below

• Pro Version with extended functionality

  • TreeView,
  • TreeListView (hierachical DataTable)

Demos, Sample Code and Pro Version

• See https://flutterdemo.mahop.net
• and https://flutter.mahop.net

Screenshot of the first sample in the demo app

Contribute

• Like the project on pub.dev
• Use the code and report bugs
• You can support development buying one or more glasses of orange juice. (or cups of coffee)
  • https://www.buymeacoffee.com/mahop
• Buy a Pro license on https://flutter.mahop.net (from 150,- EURO / year)

Features

• Perfect virtual scrolling using flutters TwoDimensionalScrollView

  • Display a million and more rows with high performance
  • Display rows with different RowHeights

• Advanced Drag and Drop

  • Reordering (built in)
  • Multi Drag and Drop (also for reordering)
  • Drag and Drop to and from other Widgets
    • from DataTable to and from another DataTable
    • from DataTable to and from a TreeView
    • from DataTable to a Flutter DropTarget
    • from GridView to and from a ListView
    • ... and so on ...
  • Auto scrolling during drag and drop

• Column resize and reorder on DataTable and TreeListView

  • Saving the current state as JSON string
  • Applying as saved state from JSON string

• JumpTo(item) with height performance

• Selection

  • Single selection
  • CheckBox selection (mutliple items)
  • Extended selection - for Desktop with Mouse click + shift and/or ctrl keys (multiple items)
    • Extended selection can be combined with CheckBox selection

• And more to come in the next versions...

Usage

  // ----------------------------------------------
  // - Sample build function - very simple usecase
  // ----------------------------------------------
  Widget buildMhItemsView(BuildContext context) {

    // --------------------------------------------
    // - Build some sample data
    // --------------------------------------------
    final List<ExampleItem> items = [];
    for (var i = 1; i <= 100; i++) {
      items.add(ExampleItem(text: "Example Item $i", index: i));
    }

    // --------------------------------------------
    // - Build the Column definitions you need
    // --------------------------------------------
    List<MhItemsViewColumnDef<ExampleItem>> columnDefs = [];
    columnDefs.add(MhItemsViewColumnDef<ExampleItem>(id: "index", header: "Index", columnWidth: 50, getDisplayValue: (item) => item.index));
    columnDefs.add(MhItemsViewColumnDef<ExampleItem>(id: "text", header: "Text", columnWidth: 250, getDisplayValue: (item) => item.text));
    columnDefs.add(MhItemsViewColumnDef<ExampleItem>(id: "calculated", header: "Calculated", columnWidth: 250, getDisplayValue: (item) => item.index * item.index));

    // --------------------------------------------
    // - apply needed settings
    // --------------------------------------------
    final settings = MhItemsViewSettings<ExampleItem>(rowHeight: 25, headerHeight: 30, displayHeader: true);

    return MhItemsView<ExampleItem>(itemsSource: items, columnDefs: columnDefs, settings: settings),
  };

Additional information

Go to https://flutter.mahop.net to learn more about the widget and look at the demos with sample code.