gnucash stable: Account tree: make numeric columns selectable via GncCellRendererLabel

[Robert Fewell]

Updated	 via  https://github.com/Gnucash/gnucash/commit/25e0f214 (commit)
	from  https://github.com/Gnucash/gnucash/commit/ec4a85a5 (commit)



commit 25e0f2144a16b2dc31822b9ba277c43265aee05a
Author: galbarm <galbarm at gmail.com>
Date:   Thu May 7 20:23:18 2026 +0300

    Account tree: make numeric columns selectable via GncCellRendererLabel
    
    Implements the approach suggested by jralls in PR #2222: instead of a
    context menu action, introduce GncCellRendererLabel - a
    GtkCellRendererText subclass that returns a read-only, selectable
    GtkEntry when a cell is activated.
    
    All numeric columns (Balance, Total, Cleared, Reconciled, Present,
    Future Minimum, and their report/period variants) are affected because
    they all go through gnc_tree_view_add_numeric_column.
    
    Usage:
    - Click once to select the row (unchanged behaviour)
    - Click again on a numeric cell to activate it; the value appears in a
      read-only entry field with the text pre-selected
    - Ctrl+C copies the value to the clipboard; Escape or clicking away
      dismisses the field without modifying the model
    - Unicode bidi control characters (added by GnuCash for RTL display)
      are stripped before showing the value so the copied text is clean



Summary of changes:
 gnucash/gnome-utils/CMakeLists.txt            |   2 +
 gnucash/gnome-utils/gnc-cell-renderer-label.c | 169 ++++++++++++++++++++++++++
 gnucash/gnome-utils/gnc-cell-renderer-label.h |  35 ++++++
 gnucash/gnome-utils/gnc-tree-view.c           |  14 ++-
 libgnucash/app-utils/gnc-ui-util.cpp          |  28 +++++
 libgnucash/app-utils/gnc-ui-util.h            |  14 +++
 po/POTFILES.in                                |   1 +
 7 files changed, 257 insertions(+), 6 deletions(-)
 create mode 100644 gnucash/gnome-utils/gnc-cell-renderer-label.c
 create mode 100644 gnucash/gnome-utils/gnc-cell-renderer-label.h