Skip to content

Latest commit

 

History

History
30 lines (23 loc) · 936 Bytes

panel.md

File metadata and controls

30 lines (23 loc) · 936 Bytes

Panel

Developer notes from usage of the Panel library.

Notes

Any control without a callback function feature like "on_click" for the button can gain a callback function using the param.watch method. For example, a Checkbox. Suppose, you would like to have an event when the checkbox is toggled.

Here is the code to create the checkbox control:

logEnableControl = pn.widgets.Checkbox(name="Enable file logging")

To setup a watch for a change in the "value" property, use:

logEnableControl.param.watch(logEnableCallback, 'value')

The callback function should trap the emitted event:

def logEnableCallback(event):
    print(event)

Which will result in something like:

Event(what='value', name='value', obj=Checkbox(name='Enable file logging', value=True), cls=Checkbox(name='Enable file logging', value=True), old=False, new=True, type='changed')