Use Inline Cell Editing - Nextedy Documentation

This page is based on source code analysis. Some UI behaviors described here may vary depending on your version. Verify the editing experience in your Gantt installation.

Prerequisites

A Gantt widget with grid columns configured
Edit mode enabled (click the Edit button in the toolbar)

How Inline Cell Editing Works

Inline cell editing lets you click directly on a grid cell to modify its value. Each column can have an associated editor type that determines the input widget shown when editing. The Gantt supports four editor types:

Editor Type	Input Widget	Use Case
`text`	Text input field	Free-text fields like titles or descriptions
`number`	Numeric input field	Duration, percentage, or numeric custom fields
`date`	Date picker	Start date, end date, or deadline fields
`select`	Dropdown menu	Enumeration fields like status or priority

Each editor uses a mapTo property that links the editor to the underlying task property it reads from and writes to.

Built-In System Column Editors

The Gantt includes several built-in system columns with pre-configured inline editors:

System Column	Editor Type	Behavior
`start_date`	Date picker	Opens a date picker mapped to the configured start field
`end_date`	Date picker (end date)	Validates that end date is not before start date
`duration`	Duration editor	Accepts day values; changes update the end date automatically
`progress`	Number (0-100)	Accepts values 0-100; internally stored as 0.0-1.0
`deadline`	None (read-only)	Not editable inline; use the lightbox or Polarion directly
`owner`	None (read-only)	Not editable inline; use the lightbox to change assignments

Configure Grid Columns with Editors

To add columns to the Gantt grid, configure the Table section in the widget parameters:

Open the Polarion page containing the Gantt widget
Edit the widget properties
Locate the Table configuration section
Set the grid WIDTH parameter to control the overall grid panel width in pixels
Configure the FIRST_COL settings for the task title column:
- showId — display the work item ID prefix (e.g., WI-123:)
- showTitle — display the work item title text
- showIcon — display the work item type icon
Add additional columns using the COLUMNS list

The exact widget parameter names for column configuration may vary by version. Check the widget parameter editor in your Polarion page for the available column settings.

Edit a Cell Value

Ensure the Gantt is in Edit mode (click Edit in the toolbar)
Click on an editable grid cell — the appropriate editor opens based on the column type
Modify the value:
- For text and number editors: type the new value
- For date editors: select the date from the picker
- For select editors: choose an option from the dropdown
Press Enter or click outside the cell to confirm
The updated value writes back to the task property defined by the editor’s mapTo field

When you confirm an inline edit in the grid, the new value propagates immediately to the visible columns and the timeline without requiring a full Gantt reload.

The deadline and owner system columns do not have inline editors. To modify these fields, double-click the task bar to open the lightbox or edit the work item directly in Polarion.

Verify Your Configuration

After configuring columns with editors:

Enter Edit mode in the Gantt
Click on a start_date or duration cell
You should now see the inline editor open with the current value pre-filled
Change the value and press Enter — the task bar position should update immediately in the timeline

​Prerequisites

​How Inline Cell Editing Works

​Built-In System Column Editors

​Configure Grid Columns with Editors

​Edit a Cell Value

​Verify Your Configuration

​See Also

Prerequisites

How Inline Cell Editing Works

Built-In System Column Editors

Configure Grid Columns with Editors

Edit a Cell Value

Verify Your Configuration

See Also