Input improvements

[mikeprosserni]

What does this Pull Request accomplish?

This PR upgrades how inputs work for streamlit pages.

• We now automatically synchronize values from st.session_state so that users don't have to call panel.set_value() for input controls like st.number_input and st.text_input (as long as they provide a key).
• We now provide ni.enum_selectbox that turns any Enum into a dropdown, and handles panel.set_value()
• We now provide ni.flag_checkboxes that turns any Flags into a set of checkboxes, and handles panel.set_value()
• The all_types example has been updated to show input controls for supported types, and better show output values for enums and flags.

• The nidaqmx_continuous_analog_input example has been updated so all of the controls are actually functional (except the I/O channel selectors), and to make the layout look more like the LabVIEW version of the example. It also now has a run/stop button, since you have to restart the task to use different settings.

Why should this Pull Request be merged?

We want inputs to be as user-friendly as possible.

Finalizes AB#3127262 and fixes AB#3180627

What testing has been done?

Autotests in test_panel_client, test_streamlit_panel, and test_streamlit_panel_accessor.

Manual testing with the all_types example and the nidaqmx_continuous_analog_input example.

[github-actions]

Test Results

   10 files  ±  0     10 suites  ±0   21s ⏱️ +2s
  216 tests + 26    216 ✅ + 26  0 💤 ±0  0 ❌ ±0 
2 110 runs  +260  2 110 ✅ +260  0 💤 ±0  0 ❌ ±0 

Results for commit c7318d6. ± Comparison against base commit 2f3724a.

This pull request removes 10 and adds 36 tests. Note that renamed tests count towards both.

tests.unit.test_streamlit_panel ‑ test___builtin_scalar_type___set_value___gets_same_value[20]
tests.unit.test_streamlit_panel ‑ test___builtin_scalar_type___set_value___gets_same_value[5]
tests.unit.test_streamlit_panel ‑ test___builtin_scalar_type___set_value___gets_same_value[MixinIntEnum.VALUE33]
tests.unit.test_streamlit_panel ‑ test___builtin_scalar_type___set_value___gets_same_value[MyIntEnum.VALUE20]
tests.unit.test_streamlit_panel ‑ test___builtin_scalar_type___set_value___gets_same_value[MyIntFlags.VALUE4|VALUE1]
tests.unit.test_streamlit_panel ‑ test___builtin_scalar_type___set_value___gets_same_value[value11]
tests.unit.test_streamlit_panel ‑ test___builtin_scalar_type___set_value___gets_same_value[value3]
tests.unit.test_streamlit_panel ‑ test___unsupported_type___set_value___raises[MyEnum.VALUE300]
tests.unit.test_streamlit_panel ‑ test___unsupported_type___set_value___raises[MyFlags.VALUE16|VALUE8]
tests.unit.test_streamlit_panel ‑ test___unsupported_type___set_value___raises[MyFlags.VALUE8|VALUE16]

tests.unit.test_streamlit_panel ‑ test___enum_type___set_value___gets_same_value[20]
tests.unit.test_streamlit_panel ‑ test___enum_type___set_value___gets_same_value[5]
tests.unit.test_streamlit_panel ‑ test___enum_type___set_value___gets_same_value[MixinIntEnum.VALUE33]
tests.unit.test_streamlit_panel ‑ test___enum_type___set_value___gets_same_value[MyIntEnum.VALUE20]
tests.unit.test_streamlit_panel ‑ test___enum_type___set_value___gets_same_value[MyIntFlags.VALUE4|VALUE1]
tests.unit.test_streamlit_panel ‑ test___enum_type___set_value___gets_same_value[MyIntableEnum.VALUE200]
tests.unit.test_streamlit_panel ‑ test___enum_type___set_value___gets_same_value[MyIntableFlags.VALUE16|VALUE32]
tests.unit.test_streamlit_panel ‑ test___enum_type___set_value___gets_same_value[MyIntableFlags.VALUE32|VALUE16]
tests.unit.test_streamlit_panel ‑ test___enum_type___set_value___gets_same_value[MyMixedEnum.VALUE2]
tests.unit.test_streamlit_panel ‑ test___enum_type___set_value___gets_same_value[value11]
…

♻️ This comment has been updated with latest results.

[Copilot]

Pull Request Overview

This PR enhances the panel value API to indicate when values are missing, updates clients and tests for this new behavior, and adds first-class support for Enum and Flag controls in Streamlit panels.

• Introduce a found field in GetValue RPC, update PanelClient.get_value to return (found, value), and adapt StreamlitPanelValueAccessor.get_value to raise KeyError or coerce enums.
• Extend tests: update the fake servicer, adjust existing exception tests, and add extensive coverage for enum and flag value handling.
• Add two new Streamlit controls (enum_selectbox, flag_checkboxes), auto-sync session state in panel initializer, and update example scripts to use these controls.

Reviewed Changes

Copilot reviewed 18 out of 18 changed files in this pull request and generated 3 comments.

Show a summary per file

File	Description
tests/utils/_fake_python_panel_servicer.py	Return GetValueResponse(found=...) instead of aborting
tests/unit/test_streamlit_panel.py	Adjust exception types, add new tests for enum/flag paths
tests/unit/test_panel_client.py	Update get_value tests to expect (found, value) tuple
tests/types.py	Add new Flag/Enum types to cover expanded support
src/nipanel/_panel_client.py	Change get_value to return (bool, object)
src/nipanel/_panel_value_accessor.py	Handle (found, value) tuple and enum coercion
src/nipanel/_convert.py	Add is_supported_type helper
src/ni/pythonpanel/v1/python_panel_service_pb2*	Add found field in protobuf definitions and stubs
src/nipanel/_streamlit_panel_initializer.py	Auto-sync session state values into the panel
src/nipanel/controls/_flag_checkboxes.py	New control for selecting Flag enums via checkboxes
src/nipanel/controls/_enum_selectbox.py	New control for selecting Enum values via a selectbox
examples/nidaqmx/nidaqmx_continuous_analog_input_panel.py	Use new controls, session-state sync, layout tweaks
examples/nidaqmx/nidaqmx_continuous_analog_input.py	Drive panel values for DAQmx task configuration
examples/all_types/define_types.py & all_types_panel.py	Update example to showcase all supported types

Comments suppressed due to low confidence (3)

tests/unit/test_streamlit_panel.py:300

• This docstring is outdated: the test now covers enum types. Update it to reflect that this test validates enum behavior.

    """Test that set_value() and get_value() work for builtin scalar types."""

tests/types.py:72

• StrEnum is not imported in this file, causing a NameError. Add from enum import StrEnum or qualify as enum.StrEnum.

class MyStringableEnum(StrEnum):

examples/nidaqmx/nidaqmx_continuous_analog_input_panel.py:55

• The st.container API does not support a border parameter. Remove border=True or apply supported Streamlit styling instead.

    with st.container(border=True):