This change completely removes the LIB_ALIAS design pattern an replaces
it by allowing LIB_PART objects to inherit from other LIB_PART objects.
The initial implementation only allows for single inheritance and only
supports the mandatory fields in the derived part because that is all
that the current symbol library file format will support. Once the new
file format is implemented and saving to the old file format is deprecated,
more complex inheritance will be added. The LIB_ALIAS information saved
in the document files was move into the LIB_PART object. This change
impacts virtually every part of the schematic and symbol library editor
code so this commit message is woefully incomplete.
REMOVE: Removed the symbol aliases concept from the schematic and symbol
editors and the symbol viewer.
NEW: Replace the symbol alias concept with simple inheritance that allows
a library symbol to be derived from another library symbol.
Move the class DIALOG_EDIT_COMPONENT_IN_SCHEMATIC to its own
header, and move the SCH_EDIT_FRAME::EditComponent out of the
dialog implementation file. Thus, users of the dialog are
coupled only by the dialog header, as usual.
Also tidy some includes and comments.
In DIALOG_EDIT_COMPONENT_IN_SCHEMATIC, the Cancel button is
connected to a dedicated handler to deal with the footprint
browser widget. DIALOG_EDIT_COMPONENT_IN_LIBRARY should have
the same logic.
Fixes: lp:1816636
* https://bugs.launchpad.net/kicad/+bug/1816636
Wayne Stambaugh
Seth Hillbrand
John Beard
Jeff Young
Aylons Hazzud
Simon Richter
jean-pierre charras
Dick Hollenbeck
Wayne Stambaugh