SVGHMI: add visible feedback to Jump widget when clicked/touched

SVGHMI: add support for "reference" and "frame" rectangles to spread-out ovelapping elements.

When HMI become complicated, designer needs to spread-out ovelapping elements
in order to unclutter drawing and facilitate maintenance.

SVGHMI: remove intermediate "updates" Map and apply_updates()

It was used initially to decouple DOM updates from reception of data through
websocket, but now since all widget SHOULD use animate() to modify DOM, and
dispatch() only change internal state, apply_update is unnecessary.

SVGHMI: cosmetic fix in js

SVGHMI: do not discard out-of-page elements inside widgets that are ovelapping pages.

SVGHMI: update generated XSLT

OPCUA: cosmetic fixes

CLI: poll runtime log and output new entries to stdout.

CLI: when using --keep, do not disconnect before being interrupted

Runtime: work around 1s delay added when using twisted reactor's callLater.

Since wxPython4, using wxReactor from non-main thread was producing
exceptions in wxWidget's C++ code. Then reactor.run() was called from
main thread, and runtime's worker was delegating calls to reactor
with callLater(0, callable).

While this worked perfectly with wxReactor, it did introduce an unexplained
1 second delay to each worker call when using nomal linux reactors
(i.e. without wxPython). As a workaround reactor runs in a thread when using
twisted without wxPython

tests: opcua_client test project is not meant to be encrypted.

SVGHMI: update generated XSLT files

Merged changes from default

SVGHMI: ensures that PLC sends only fresh data to HMI, even right after variable being subscribed.

OPC-UA: add logging to help user to understang what went wrong when connecting.

OPC-UA: fix LDFLAG, missing OpenSSL's -lcrypto

open62541 is linked staticaly, therefore shared object dependencies have to be given explicitely.

tests: missing SSL support in open62541 build parameters

Merge changes from default branch

merge

Merge pull request #5 from vitw/wxPython4

update installation instructions

docs: add additional dependencies to installation instructions

update installation instructions

SVGHMI: fix svghmi_jumps example's SVG file (viewport was misplaced)

SVGHMI: rework the way cached values are applied to widgets when fresh data is missing.

SVGHMI: re-arrange Animate and data Dispath code paths.

SVGHMI: add an exemple that demonstrate use of Jump widget in different use cases.

SVGHMI: refactor an factorize widget dispatch() method calling

SVGHMI: fix ToggleButton not always reflecting current state

IDE: fix exception transfering or reconnecting after tracing variables

SVGHMI: Add predefined assignments to jump widget to notify PLC or other widgets about jump.

SVGHMI: continue rework of Jump widget to cope with Enable Expressions.

Questioning widget's activity and disability all together.
Now active/inactive/disable masquarade is all managed in widgets_common.
Propagated changes to widget already using activity (buttons)

SVGHMI: rework Jump widget to cope with Enable Expressions.

Relative jumps are not disabled implicitely anymore when pointed HMI_NODE is 0.
Also, "activable()" implementation was enhanced to make it optional.

SVGHMI: add support for "enable expressions" with arbitrary variable name assignment.

HMI tree paths can be prefixed with a variable name "@name=/MY/HMI/VAR"
Widget declarations can end with a "#" followed by a JS expression that refers to name given to variables.
Widget is disabled if expression's result is false.

Commit includes some more-or-less related generated code refactoring, that should simplify extending widget's variables attributes.

SVGHMI: preliminary implementation of a general enable bit for all widgets, using "#" at the end of widget declaration, and a "disabled" element that becomes visible instead of widget when disabled.

SVGHMI: rename veriables in parse_labels.ysl2 for better readability

OPC-US client: add support for x509 and user+password authentication.

Commit for backup not including tests since encrypted OPC-UA test are still not valid.

IDE: fix wxPython 3->4 API change leading to exception in type selection menu in CodeFileEditor

OPC-UA, IDE: add CTN parameters to support OPC-UA encryption and authentication.

xmlclass had to be enhanced to support elements with no content in xsd:choice

IDE: Fix tooltip not being shown anymore on any toolbars since switch to wxPython4.

Cleanup and update version.py

IDE: Fixed About dialog exception on Windows, and typo in about dialog's content.

runtime: fix bugs introduced in previous commit, and refactor some code

Runtime: wx.app.mainLoop and twisted reactor now share main thread with runtime.Worker.

This fixes exception when invoking python interactive shell from Runtime's tray
icon right-click menu.

Probably a consequence of wxPython upgrade, together with initial bad idea to
move wx.app.mainloop in non-main thread.

Remove useless assignment

SVGHMI: update generated XSLT

tests: fix load_and_build_tests.pytest

Leftover import from previously commented-out tests. Commented out as well.

Merge changes from default in wxPython4

SVGHMI: add support for multiline widget declaration using svg:desc.

Declaration started in inkscape:label and interupted by a '\' can be continued in the description field.
After an empty line, the rest of the description field is left for description text.

Runtime: Fix PLC python thread crash in case of exception in PostStart customization hook.

IDE+Runtime: fix exception when reconnecting with non-empty trace/force list.

Sometimes, remote call to SetTraceVariableList returned None just after reconnecting:
- changed caller to accept None (in case of connection problem)
- changer SetTraceVariable list to return 4 (DEBUG_SUSPENDED) if debug is suspended

Runtime: Retain: fix missuse of static classifier leading to ever increasing offset.

IDE: one more consequence of wxPython's 3 to 4 version bump

IDE+runtime: Fix .ico generation

IDE, SVGHMI: Workaround Snap package not launching Inskape, POEdit or Chromium directly, producing lot of output in Incskape CLI, and messing with TMPDIR

IDE: wxPython4 consequences : wx.OPEN -> wx.FD_OPEN

toolchain: GCC: use CFLAGS, LDFLAGS and SYSROOT given in environment

IDE: fix About dialog not showing (wxPython4 sequel), update copyright section.

IDE: fix image generation from svg script that was deleting to many files on cleanup

IDE: images: regenerate png according to latest changes in SVG

IDE: images/icons.svg: Update logo, icon, build, clean, transfer, connect and disconnect.

LocalRuntime: Allow overriding local runtime python binary path using BEREMIZPYTHONPATH environment variable.

tests: debug_project IDE test: give up with unreliable OCR for "Force value" menu entry.

IDE: fix primary buffer selection being reset on each write to console on X11.

This problem was making debug_project IDE test randomly failing

test: IDE: Fix non repeatable select-all-delete in debug_project.

tests: Change OCR options to be more reliable on small fonts.

tests: add Beremiz project used in opcua_test CLI test

GitHub CI: my bad. m( Was just wrong version

GitHub CI: actions/checkout@v3 submodules=recursive fails.

Merge from default branch + fix traffic light example SVG missing background + update generated XSLT

SVGHMI: update generated xslt file

SVGHMI: Warn at build time when SVG refers to non-existing widget types.

SVGHMI: add support for user JS script added in inkscape's document properties / scripting / embedded scripts.

SVGHMI: update generated XSLT file

SVGHMI: re-organize animate() to ensure that page fade-out is always visible, also make fade-out curve more aggressive to enhance visual feedback.

tests: recommanded build options for open62541 leads to infinite linking time when building PLC

tests: one more stability related fix for debug_project IDE test

tests: fix tests being systematically re-executed

CLI: fix fake_wx for OPC-UA in CLI, match with test and requirements

CLI: Explicitely wait for user interrupt (-k) and flush stdout each line.

tests: IDE: fix again debug_project, making it hopefully more stable

wxPython4 sequels: fix Wx exceptions ignored because no traceback

Some exception triggered on wxPython side have None as traceback,
and exception hanlder was discarding them.

tests: IDE: prevent edit_project to save modifed example so that it doesn't influence following tests

tests: IDE: force reporting screenshot even after failing command

tests: CLI: add simple test running python example

tests: docker: add dependencies for CLI testing

tests: add support for CLI tests

tests: fix debug_project.sikuli again.
- tooltip and context menu overlap
- text not being replaced in forcing dialog

CLI: prevent LOCAL:// runtime to use GUI (tray icon) when launch from CLI.

Merge latest changes from default

wxPython4 sequels: fix exception in connection dialog, force black text in FBD.

- wxPython4 does not have RemoveSizer in API anymore.
- On GTK3 with dark theme default text colour is white, making it unreadable.

SVGHMI: fix js exception because of trying to find already detached elements by id.

SVGHMI: better handling of page switch fade-out.

- In cases or relative jump to current page, page was keeping black after switch.
- Now keep track of undergoing page switch without comparing subscribed page to visible page.

tests: nore details, please

Github CI: upload artifact (reports) when failing

tests: add one more ignored pic to debug_project test

tests: add missing pic for debug_project sikuli test and remove depricated picture in edit_project

Github CI: use new name for test launching script

test: Fix context menu problems in debug view. This should fix debug_test as well.

- exception on right click on a wire
- tooltip hiding context menu in some case

tests: add (broken) debug_project test, fix edit_project

tests: rename build_in_docker.sh to do_test_in_docker.sh

Merge default in wxPython4 branch

SVGHMI: update generated XSLT files

SVGHMI: force initial state of Display widget to empty string.

SVGHMI: set initial displayed value of input widget to empty string.

SVGHMI: add warning_labels, same as optional_labels but emits warnings at build time if element is missing.

SVGHMI: update generated XSLT files

SVGHMI: generalize detach/re-attach of binary choices for ToggleButton, PushButton, Button and Keypad's Shit and CapsLock.

SVGHMI: also use order-preserving detach re-attach for hiding and showing active and inactive state.

SVGHMI: fix Switch widget so that order of choices elements is preserved across detaching and re-attaching.

SVGHMI: update generated xslt files

SVGHMI: nasty scope shadowing bug... was making funny recursion, leading to really slow interaction.

SVGHMI: fading page switch : to avoid blinking, page stays black once fading finished and next page is still not ready.

SVGHMI: fading page switch : defer update of classList to next animate() call when finishing transition.

classList update was happening in the same call as switch_page(), but this call is not meant to do any change in the DOM. This was triggering unwanted style and layout recomputation.

SVGHMI: rework Switch widget : detach/attach elements instead of hiding with style.display, detach all possible choices at init.

SVGHMI: add fading transition to make page switch feel more responsive on slow machines.

SVGHMI: add a way for widgets and other yslt2 files to add css definitions to resultng page.

SVGHMI: update generated XSLT filesw

SVGHMI: XY graph build produces error message if provided curve_N are not consistent.

SVHMI: Keyboard: Replace untouched value when typing directly after open. Make info string (HMI variable name) optional.

merged