Extensions v1.15.0

In this release

• Added Cloud, PublicWeb, and PublicDesktop as environment context values.
• Added sendDialogMessageAsync method and DialogMessageReceived event to the UI namespace (Cloud / Server only).
• closeDialog can now be called from the extension frame to forcefully close the dialog.
• See other details in: https://tableau.github.io/extensions-api/docs/trex_release-notes/.

Extensions v1.15.0 (beta)

In this release

• Added Cloud, PublicWeb, and PublicDesktop as environment context values.
• Added sendDialogMessageAsync method and DialogMessageReceived event to the UI namespace (Cloud / Server only).
• closeDialog can now be called from the extension frame to forcefully close the dialog.
• See beta release notes: https://tableau.github.io/extensions-api/gh-pages-dev/docs/trex_release-notes/

Note: beta release files are located under lib/beta folder

Extensions v1.14.0

In this release

• Added hasAlias and aliasValue attributes to DataValue.
• Fixed bug when calling getAllDataSourcesAsync on a workbook with no worksheets.
• Fixed a bug where calling applyRangeFilterAsync with a max or min of 0 would throw an error.
• See other details in https://tableau.github.io/extensions-api/docs/trex_release-notes.

Extensions v1.13.0

In this release

• Added WorksheetFormattingChanged event to worksheet.
• Added backgroundColor and formatting properties to worksheet.
• Added applyWorksheetFormatting as optional parameter to GetSummary and GetUnderlying data APIs.
• See other details in https://tableau.github.io/extensions-api/docs/trex_release-notes.

Extensions v1.12.1

In this release

• Fixed backwards compatibility issues present in v1.12.0.
• The same backwards compatibility issues are also present in v1.11.0. v1.11.1, which fixes the issues, can be found in the previous releases folder.

Extensions v1.12.0

In this release

• Viz Extensions' first ever public release.
• Introduces the new worksheet object for Viz Extensions accessible via tableau.extensions.worksheetContent.worksheet.
• Added getTooltipTextAsync to worksheet.
• Added leaveMarkNavigationAsync to worksheet.
• Added hoverTupleAsync to worksheet.
• Added selectTuplesAsync to worksheet.
• Implemented Field.ColumnType.
• Added isGeospatial attribute to Field.
• Fixed a bug to allow a Field to have datatype = DataType.Spatial.
• [For trex files] Added support for custom encoding icons, as well as localizable encoding and tooltip
  strings
• [For trex files] Added support for the Format Extensions button in the Marks Card area
• See other details in https://tableau.github.io/extensions-api/docs/trex_release-notes.

Extensions v1.11.0

In this release

• Added Environment.uniqueUserId.
• Added the SummaryDataChanged event type.
• Added the Worksheet.getVisualSpecificationAsync method.
• Fixed bug in getSelectedMarksAsync which would cause formattedValue to be incorrect in multi
  pane scenarios.
• Added experimental features as part of Viz Extensions Pre-Release.
• See other details in https://tableau.github.io/extensions-api/docs/trex_release-notes.html.

Extensions v1.10.0

In this release

• Updates to the input specification for createVizImageAsync. This release includes support for combination charts, charts with multiple mark types in the same visualization (requires Tableau 2022.4+).
• Adds support for a DataTableReader to support pagination (requires Tableau 2022.4+).
• Deprecated Worksheet.getSummaryDataAsync. Use Worksheet.getSummaryDataReaderAsync.
• UI.displayDialogAsync now supports different dialog styles (window, modal or modeless dialog boxes).
• Adds support for annotating marks with Worksheet.annotateMarkAsync, Worksheet.getAnnotationsAsync, and Worksheet.removeAnnotationAsync.
• Map file is now included for better debugging experience with minified library.
• See other details in https://tableau.github.io/extensions-api/docs/trex_release-notes.html.

DataTableReader Introduction

There has always been a 10k row limit on getUnderlyingTableDataAsync and on
getLogicalTableDataAsync, and for large worksheets, getSummaryDataAsync can prove to be
unreliable.

Introducting DataTableReader! Starting with Tableau 2022.4 and Extensions v1.10.0,
DataTableReader provides an API to request data a page at a time.

Fetching a DataTableReader

To get a DataTableReader use one of the new functions: getSummaryDataReaderAsync,
getUnderlyingTableDataReaderAsync, or getLogicalTableDataReaderAsync. The parameters to these
functions include the GetSummaryDataOptions or GetUnderlyingDataOptions, but also include a page
row count. This parameter sets the size of pages that will be returned. The default, and maximum,
page size is 10,000 rows.

Using a DataTableReader

Converting your code to use a DataTableReader is straightforward.

The following:

const dataTable = await this.worksheet.getSummaryDataAsync();
// ... use dataTable ...

becomes:

const dataTableReader = await this.worksheet.getSummaryDataReaderAsync();
const dataTable = await dataTableReader.getAllPagesAsync();
await dataTableReader.releaseAsync();
// ... use dataTable ...

Or alternatively:

const dataTableReader = await this.worksheet.getSummaryDataReaderAsync();
for (let currentPage = 0; currentPage < dataTableReader.pageCount; currentPage++) {
    const currentPageDataTable = await dataTableReader.getPageAsync(currentPage);
    // ... process currentPageDataTable ...
}
await dataTableReader.releaseAsync();

Limits on a DataTableReader

Unfortunately, we still live a a world with limited computing resources. A DataTableReader consumes
server resources. Therefore, there are still limits on the number of rows supported for underlying
and logical data table readers. The default limit is approximately 1 million rows of data for
getUnderlyingTableDataReaderAsync, and approximately 32 million cells (rows * columns) for
getLogicalTableDataReaderAsync. Server administrators (starting in 2023.1) may change these limits to better match
computing resources with the Tableau Server (Cloud) or Tableau Desktop options:

• ExtensionsAndEmbeddingReaderRowLimit for getUnderlyingTableDataReaderAsync or
• ExtensionsAndEmbeddingReaderCellLimit for getLogicalTableDataReaderAsync.

Hints on using a DataTableReader

• If you are dealing with large amounts of data, set the columns to include, or the
  IncludeDataValuesOption to what you need. Fetching all columns, or requesting formatted data
  when you don't need various column or formatted data take significantly more time and resources.
  The option IncludeDataValuesOption.OnlyNativeValues is your friend for very large underlying or logical
  table data.
• Only one DataTableReader per logical table id is supported.
• Call DataTableReader.releaseAsync() when you are done processing the data. You can always
  request another one if you need to do more processing after some period of inactivity or user
  action.

Extensions v1.9.0

Changes in the Dashboard Extensions API:

• Added the Filter.getAppliedWorksheets() and Filter.setAppliedWorksheets() methods.
• Added the Dashboard.getFiltersAsync() and Dashboard.applyFilterAsync() methods.
• Added the Worksheet.applyRelativeDateFilterAsync method.
• Support for Tableau and Benton Sans fonts. You can now load these fonts during initialization.

For more information, see the Release Notes for Tableau Dashboard Extensions API version 1.9.0.

Extensions v1.8.1

Changes in the Dashboard Extensions API:

• Bug fixes
• Documentation updates

For more information, see the Release Notes for Tableau Dashboard Extensions API version 1.8.1.