Range of WYSIWYG Editor Table Handling Improvements

[ssddanbrown]

Range of fixes and improvements to handling tables, especially in regard to cleaning complex scenarios from tables imported from apps like word. We won't support all word-like content/formatting, but we can make handling that easier.

Related to #4845, #4844, #4843, #985

Changes

• Updates TinyMCE to latest version.
• Updates cell selection styles to avoid overflow scrolling on chromium browsers.
• Adds some custom clear-format action handling to properly clear table cell styles on cell range selection.
• Adds "Clear table formatting" menu option to remove styles/sizes from the table and everything within.
• Adds "Resize to contents" menu option to remove just sizes from the table and everything within.

Todo

• See if we can dynamically show table header row toggle on first row selection.
• See if we can alter table menu to add:
  • Clear all table formatting option.
  • Clear all table sizing option (fit cells to content).
• Fully test on edge in Win11 environment, with copied content from Word.

[ssddanbrown]

Preview of new table format clear and table resize menu options:

Screencast.from.2024-02-16.14-40-22.webm

[Roemer]

This is already pretty cool, a few questions:

• Any specific reason that you didn't also add tablecolheader to make columns headers?
• Why allow headers only on the first row? Others could be headers too.
• I am trying to use your tableclearformatting and tableclearsizes in a custom header like:

    mceConfig.toolbar = [
      mceConfig.toolbar,
      'table tableinsertdialog tableclearformatting tableclearsizes | tableinsertrowbefore tableinsertrowafter tabledeleterow | tablecutrow tablecopyrow tablepasterowbefore tablepasterowafter | tableinsertcolbefore tableinsertcolafter tabledeletecol | tablemergecells tablesplitcells | tablerowheader tablecolheader | tablecellbackgroundcolor | tabledelete'
    ];

but it does not add the items, any idea here? Are they only menu items?

[ssddanbrown]

Any specific reason that you didn't also add tablecolheader to make columns headers?

Because I hadn't seen any demand for it. I try to avoid any additions without clear need, even if simple to add.

Why allow headers only on the first row? Others could be headers too.

Because this is the most significant use-case. You can still make other rows headers if needed via the menu system, but the aim was to make the common case accessible. Plus it keeps the toolbar minimally complex unless there's a mucher higher chance of needing that action.

but it does not add the items, any idea here? Are they only menu items?

Yeah, don't think the main toolbars directly support having menu items added to.
You'd need to create buttons that have the same actions (exec the relevant commands).