Tab Strip Dataset Expression - Get Selected Tab Index

Ignition
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1

I want to use an expression binding on the dataset of a tab strip. Why is the tab data not exposed to the expression binding editor?

I'm trying to get the "tab index" for the selected tab. Any thoughts?

2

Add a custom property to your tab strip called 'selectedTabIndex.'

Then, use a propertyChange script to set the index any time a different tab is selected. You could then bind anything you want to the custom property.

The script would look something like this:

# Made for the propertyChange event handler of the tab strip
# Only fire the script if the selected tab property changes
if event.propertyName == 'selectedTab':

	#Retrieve the tabData dataset
	tabData = event.source.tabData

	# Iterate through the dataset to look for the matching tab
	for row in range(tabData.rowCount):

		# Define the selected index property as the row in the dataset where the newly selected tab is found
		if event.newValue == tabData.getValueAt(row, 0):
			event.source.selectedTabIndex = row
			break
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3

I'm using a couple different tab strips and showing/hiding them conditionally.

Would adding an "or visible" to the property change script work?

4

I'm not sure what this means. Are you toggling the bool for the hidden column on some of the tabs?

5

The visible property for the entire tab strip

6

If you need to trigger something off of a visibility property change, it will be this:

if event.propertyName == 'visible':

...but if you are simply trying to show or hide a tab strip when a certain tab is selected, then you could do it all from the propertyChange script. That script would look more like this:

# Only fire the script if the selected tab property changes
if event.propertyName == 'selectedTab':
	if event.newValue == 'tabName':
		# Toggle visibility off using the tab strip's visible property
		
	else:
		# Toggle visibility on using the tab strip's visible property
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