Describes a column within an outliner. Each outlinercol element is used for each successive column.

Attributes inherited from XUL Element

If true, then the column is a cycler column. In the case, clicking on a cell in the column will alternate its state between on and off. This is used, for example im a mail window, for a column that indicates that the message is read or unread with a small mark in the cell. If false, the cell is a regular text cell.

This attribute, when set to true, hides the column. The user can show the column by selecting it from a drop-down at the end of the column header row.

If set to true, the column will have indentation and twisties drawn to the left of it to indicate the hierarchy level of the rows. If no column has the primary attribute set to true, the tree will not contain any nested rows.

Set this to a RDF property to have the data in the column sorted based on that property. The property will generally be the same as that of the cell labels.

This should be set to true for the column which should be sorted by default.

Set this attribute to set the direction the column is sorted. The user may change the sort direction by clicking the column headers.

• ascending: The data is sorted in ascending order.
• descending: The data is sorted in descending order.
• natural: The data is sorted in natural order, which means the order that it is stored in.

Properties and Methods inherited from XUL Element