View menu: tree/palette toggle, and Back/Forward through opened sheets

Tree / Palette hides the left column so the wiresheet has the whole window.
ttk has no hide flag for a pane, so the column is dropped from the paned
window and re-inserted at the front, which is why the configured width is
re-applied afterwards.

Back and Forward walk the sheets opened this session, with two arrow buttons
in a new toolbar on the same commands. History entries hold the element whose
children are painted rather than a tree item id: rebuilding the tree hands out
fresh ids, while the elements themselves survive. Recording runs from the tree
selection handler, the one route every sheet opening takes, and is suppressed
while a walk drives that selection so it cannot rewrite its own trail. Opening
a different file retires the history; a delete or an undo drops only the
entries whose element has left the document, keeping the position on screen.

open_file builds the tree inline instead of going through
refresh_treeview_from_dom, so it never raised the tree-filled callback and the
history had no way to see a new file. It and reset_to_startup_state now fire
it, which also gets the tree column fitted on load rather than on the first
resize.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>

This commit is contained in:

Arda

2026-09-04 21:25:03 +03:00

co-authored by

Claude Opus 5

parent 5424d84156

commit 23a8bfbaa8

4 changed files with 275 additions and 2 deletions

									
										app_state.py
									
		+1
		-1
	
												View File
												
				@@ -8,7 +8,7 @@ so later rebinding would only ever be seen by the module that did it.

				import configparser

				import os

				VERSION = "0.0.0.028"

				VERSION = "0.0.0.029"

				PROPERTIES_FILE = os.path.join(os.path.dirname(os.path.abspath(__file__)), "editor.properties")

				DEFAULT_GRID_SIZE = 10

				DEFAULT_ADD_TIMESTAMP = True