enh: Add header tooltip to Tabulator

[hoxbro]

I don't see any reason why this shouldn't be enabled all the time.

~We likely need to update the CSS so the font type matches the tabulator font.~ Does not seem to be easy ref.

import pandas as pd
import panel as pn

pn.extension('tabulator')

data = {
    "This is a very long column name that should be truncated": [1, 2, 3],
    "Another extremely long header that will not fit normally": [4, 5, 6],
    "Short": [7, 8, 9]
}
pn.widgets.Tabulator(pd.DataFrame(data), widths=dict.fromkeys(data, 150)).servable()

[codecov[bot]]

Codecov Report

All modified and coverable lines are covered by tests :white_check_mark:

Project coverage is 87.07%. Comparing base (8492008) to head (ac58f3d). Report is 5 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #7988   +/-   ##
=======================================
  Coverage   87.07%   87.07%           
=======================================
  Files         346      346           
  Lines       53374    53374           
=======================================
+ Hits        46473    46474    +1     
+ Misses       6901     6900    -1     

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[philippjfr]

Does it also show the tooltip for short column names?

[hoxbro]

Yes

[philippjfr]

As long as there is some reasonable delay on it I'm +1 on enabling it by default.

[hoxbro]

There is a delay.

[hoxbro]

https://github.com/user-attachments/assets/63c0214b-3425-4763-8dc2-39c2d1d1d7aa

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This pull request has been automatically locked since there has not been any recent activity after it was closed. Please open a new issue for related bugs.