Add ability to resize decision table columns

[pinussilvestrus]

Is your feature request related to a problem? Please describe.

Currently, decision table headers can not be resized. Our new decision table layout should introduce that ability.

Describe the solution you'd like

Make input/output / (annotation) columns resizable (horizontally)

Things to consider:

Introducing with the new column header layout (cf. #499) labels will have a max-width and can be cropped. Resizing the column width should follow this guideline in cropping, but it should be possible to give columns a custom width. This can potentially be stored inside the XML as extension property since the DMN standard does not have something like this.

Describe alternatives you've considered

/

Additional context

Child of #494

Acceptance criteria

• input/output columns can be resized and content is cropped
• hit policy hints are moved to title property
• logo is moved (visually) inside the decision properties
• cells' content is wrapped
• annotations column can be resized
• table keeps correct layout on minimum width
• clauses are not visible on header cell hover
• drag'n'drop handle is moved to the left
• column width is saved in the XML

[barmac]

We want the width to be saved (extension properties will help).

[barmac]

Should the content of the entries be cropped like we do with the label? What should happen to the layout of the table when you start editing the rule?

I think it could behave in a similar way as input/output editing, i.e. the entry cell should "emerge" from the table so that it does not affect table layout.

[pinussilvestrus]

So basically what we come up with in this thread, am I right? Would agree with it, makes a lot of sense

[barmac]

Correct.

[barmac]

Progress so far: I have a concept how to implement the visuals. The table row with decision name will have to be moved out from the HTML table, so that table-layout: fixed can handle column widths. Still, I don't intend yet to change the visuals. Then, content of the cells will be hidden in case of overflow.

[barmac]

I've added Acceptance criteria to track issue status.

[barmac]

So I think this is the last problem to fix: