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order_branch

Description​

Activates the 'branch' mode that allows vertically reordering tasks within the same tree level

order_branch: string | boolean

Example​

gantt.config.order_branch = true;

gantt.init("gantt_here");

Default value: false

Details​

This option allows reordering tasks, while saving their tree level position. For example, a subtask will never become the parent task.

Increasing performance​

If your Gantt contains lots of tasks, the default mode of branch reordering may slow down the performance. To speed it up, you can make use of the "marker" mode.

gantt.config.order_branch = "marker";
note

sample Branch ordering - highlighting mode

In this mode only the name of the task is reordered (on holding the left mouse key) and Gantt is re-rendered only when a task is dropped in the target position (on releasing the key). Unlike the default mode, changing of the task position doesn't involve firing of the onBeforeTaskMove/onAfterTaskMove events.

To prevent dropping of a task in a particular position, use the onBeforeRowDragMove event instead (works only in the "marker" mode).