Custom Feature: Dialog seems buggy

[Hyger]

I'm trying to make the inputs for my feature, and make it interactive.

I've got two selection inputs

   - one for a occurrence

   - one for multiple faces

then there is two dropdown inputs.

the first thing i'm noticing, is as soon as i'm picking an occurrence, i'm able to execute the command (click the ok button)

which shouldn't be possible according to command_validate_inputs() since the selection input for "Selection_Faces"

isn't populated.

the next thing is that i want to hide the selected occurrence when selected, which i'm able to, but that doesn't populate "Selection_Body".

i belive it's because command_input_changed() is called before it is visible for the user. but it kinda seems like it is actually saved in the input, but not shown, because command_validate_input() completes.

am i doing something wrong?

selected_occurrence: adsk.fusion.Occurrence = None

def command_created(args: adsk.core.CommandCreatedEventArgs):
    # General logging for debug.
    futil.log(f'{CMD_NAME} Command Created Event')

    # Selections
    selectionBody = inputs.addSelectionInput("Selection_Body", "Surface Body", "Select affected body")
    selectionBody.addSelectionFilter("Occurrences")
    selectionBody.setSelectionLimits(1, 1)

    selectionEdges = inputs.addSelectionInput("Selection_Faces", "Edges", "Select edges")
    selectionEdges.addSelectionFilter("Faces")
    selectionEdges.setSelectionLimits(1, 0)

    # Fixing dropdown
    DropDownOne = inputs.addDropDownCommandInput("DropDown1", "Select Item", 0)
    DropDownOne.listItems.add("None", False)
    DropDownOne.listItems.add("Dropdown 1 Item 1", True)

    # Dowel dropdown
    DropDownTwo = inputs.addDropDownCommandInput("DropDown2", "Select Item", 0)
    DropDownTwo.listItems.add("None", False)
    DropDownTwo.listItems.add("Dropdown 2 Item 1", True)

    # TODO Connect to the events that are needed by this command.
    futil.add_handler(args.command.validateInputs, command_validate_input, local_handlers=local_handlers)
    futil.add_handler(args.command.executePreview, command_preview, local_handlers=local_handlers)
    futil.add_handler(args.command.inputChanged, command_input_changed, local_handlers=local_handlers)
    futil.add_handler(args.command.execute, command_execute, local_handlers=local_handlers)
    futil.add_handler(args.command.destroy, command_destroy, local_handlers=local_handlers)

def command_execute(args: adsk.core.CommandEventArgs):
    # General logging for debug.
    futil.log(f'{CMD_NAME} Command Execute Event')

    global selected_occurrence
    selected_occurrence.isLightBulbOn = True
    selected_occurrence = None

    # Get a reference to your command's inputs.
    inputs = args.command.commandInputs

def command_preview(args: adsk.core.CommandEventArgs):
    # General logging for debug.
    futil.log(f'{CMD_NAME} Command Preview Event')
    inputs = args.command.commandInputs

def command_input_changed(args: adsk.core.InputChangedEventArgs):
    changed_input = args.input
    inputs = args.inputs
    
    if changed_input.id == "Selection_Body":
        selected_body: adsk.core.SelectionCommandInput = inputs.itemById("Selection_Body")
        selected_body_occurrence: adsk.fusion.Occurrence = selected_body.selection(0).entity
        selected_body_occurrence.isLightBulbOn = False

    # General logging for debug.
    futil.log(f'{CMD_NAME} Input Changed Event fired from a change to {changed_input.id}')

def command_validate_input(args: adsk.core.ValidateInputsEventArgs):
    # General logging for debug.
    futil.log(f'{CMD_NAME} Validate Input Event')

    inputs = args.inputs

    args.areInputsValid = False
    
    # Verify the validity of the input values. This controls if the OK button is enabled or not.
    selectedBody: adsk.core.SelectionCommandInput = inputs.itemById("Selection_Body")
    if selectedBody.selectionCount == 0:
        return

    selectedFaces: adsk.core.SelectionCommandInput = inputs.itemById("Selection_Faces")
    if selectedFaces.selectionCount == 0:
        return

    dropDownOneValue: adsk.core.DropDownCommandInput = inputs.itemById("DropDown1")
    dropDownTwoValue: adsk.core.DropDownCommandInput = inputs.itemById("DropDown2")
    if dropDownOneValue.selectedItem.name == dropDownTwoValue.selectedItem.name:
        return

    args.areInputsValid = True

def command_destroy(args: adsk.core.CommandEventArgs):
    # General logging for debug.
    futil.log(f'{CMD_NAME} Command Destroy Event')

    global local_handlers
    local_handlers = []

Thanks in advance

[rohit_maneYV8C9]

Hello @Hyger 

Thank you to report the issue. We’ve noticed that the API behaviors are inconsistent with the documentation. This appears to be an ongoing bug, as evidenced by another forum post that highlights the same issue :- https://forums.autodesk.com/t5/fusion-api-and-scripts/bug-in-selectioncommandinput-s-builtin-validat... 

We have addressed the issue and the fix will be included in next few Fusion builds.