stacked-tree-history-forward

stacked-tree-history-backward Functions

Summary

Go forwards or backwards in the history of a stacked-tree.

Package

capi

Signatures

stacked-tree-history-forward stacked-tree &rest ignore

stacked-tree-history-backward stacked-tree &rest ignore

Arguments

`stacked-tree`⇩	A stacked-tree.
`ignore`⇩	Ignored extra arguments.

Description

A stacked-tree has a ring of 50 elements in which it records the root-width and scroll position before each change of the root-width, and before each user left-click. The function stacked-tree-history-backward goes to the previous record of stacked-tree, and the function stacked-tree-history-backward goes to the next record. Going to the previous/next record means changing the root-width and scroll position to their recorded values, and making this record the current one.

Notes

The meaning of root-width is explained in stacked-tree.

stacked-tree-history-forward and stacked-tree-history-backward are used by the Ctrl-b and Ctrl-f gestures and you can use them to implement your own gestures. The &rest ignore means that you can use these functions in the input-model directly.