Board

Board is a powerful and easy-to-use layout element for building views that work with various screen sizes.

Responsive
Rows & Columns
Breakpoints

Note	Commercial Feature A commercial Vaadin subscription is required to use Board in your project. Start Free Trial See Pricing

Board is a powerful and easy-to-use layout element for building responsive views. It reorders the components inside it on different screen sizes while maximizing the use of available space.

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Board board = new Board();
board.addRow(new ExampleIndicator("Current users", "745", "+33.7"),
        new ExampleIndicator("View events", "54.6k", "-112.45"),
        new ExampleIndicator("Conversion rate", "18%", "+3.9"),
        new ExampleIndicator("Custom metric", "-123.45"));
board.addRow(new ExampleChart());

Use Board to create responsive views and dashboards that work on any screen size.

Responsive

Board is responsive by default, meaning that it doesn’t require any custom development. Its layout is automatically optimized and adjusted based on the screen size, ensuring that the components utilize all available space.

Rows & Columns

Board is made up of rows. Each row supports up to four columns and can contain up to four components.

Nested Rows

Rows can be nested for finer-grained control of how certain areas of the layout behave on resize, and how they are rendered.

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Row rootRow = new Row();
rootRow.add(new ExampleStatistics(), 2);

Row nestedRow = new Row(
        new ExampleIndicator("Current users", "745", "+33.7"),
        new ExampleIndicator("Conversion rate", "18%", "+3.9"));
rootRow.addNestedRow(nestedRow);

Board board = new Board();
board.add(rootRow);

Column Wrapping

Columns automatically wrap on to new lines as the viewport narrows. The wrapping behavior for a row with four columns and four components is shown below.

Important

Use the draggable split handle to resize the layout and see how the columns wrap.

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Board board = new Board();
board.addRow(createCell("Cell 1"), createCell("Cell 2"),
        createCell("Cell 3"), createCell("Cell 4"));

SplitLayout splitLayout = new SplitLayout(board, new Div());

Column Span

By default, the components in a row share the space equally. A component can be made to stretch across two or three columns by setting its column span.

The possible combinations are shown below:

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Board board1 = createBoard1();
Board board2 = createBoard2();
Board board3 = createBoard3();

...

private static Board createBoard1() {
    Row row1 = new Row();
    row1.add(createCell("Span 2"), 2);
    row1.add(createCell("Span 1"));
    row1.add(createCell("Span 1"));

    Row row2 = new Row();
    row2.add(createCell("Span 1"));
    row2.add(createCell("Span 2"), 2);
    row2.add(createCell("Span 1"));

    Row row3 = new Row();
    row3.add(createCell("Span 1"));
    row3.add(createCell("Span 1"));
    row3.add(createCell("Span 2"), 2);

    Board board = new Board();
    board.add(row1, row2, row3);

    return board;
}

private static Board createBoard2() {
    Row row1 = new Row();
    row1.add(createCell("Span 3"), 3);
    row1.add(createCell("Span 1"));

    Row row2 = new Row();
    row2.add(createCell("Span 1"));
    row2.add(createCell("Span 3"), 3);

    Board board = new Board();
    board.add(row1, row2);

    return board;
}

private static Board createBoard3() {
    Row row1 = new Row();
    row1.add(createCell("Span 2"), 2);
    row1.add(createCell("Span 1"));

    Row row2 = new Row();
    row2.add(createCell("Span 1"));
    row2.add(createCell("Span 2"), 2);

    Board board = new Board();
    board.add(row1, row2);

    return board;
}

Breakpoints

Board adjusts its layout based on the layout container width. The following three container widths, called breakpoints, trigger a layout change:

Breakpoint	Container width	Max number of columns
large	≥ 960 pixels	4
medium	600–959 pixels	2 or 3^[1]
small	< 600 pixels	1

Breakpoint

Container width

Max number of columns

large

≥ 960 pixels

medium

600–959 pixels

2 or 3^[1]

small

< 600 pixels

Breakpoints can be customized by overriding the CSS custom properties --vaadin-board-width-small and --vaadin-board-width-medium.

Breakpoint-Specific Styling

You can apply different styles for each breakpoint, for example to change the font size and space between components.