929703 - <treechildren tooltip="_child"> doesn't work

Status: UNCONFIRMED

(Core :: XUL, defect)

Description

[Peter Kehl]

Attachment: treeTooltipLocal.xul

User Agent: Mozilla/5.0 (X11; Linux x86_64; rv:24.0) Gecko/20100101 Firefox/24.0 (Beta/Release)
Build ID: 20130917102605

Steps to reproduce:

Attached are 2 XULs:
- treeTooltipGlobal has <treechildren tooltip="id-of-tooltip-here">. Tooltip works for it. This is just for reference.
- treeTooltipLocal has <treechildren tooltip="_child"> and that element has a child element <tooltip label="text-here">. That doesn't work.



Actual results:

When I put a mouse over cells in treeTooltipLocal, I get no tooltip.


Expected results:

According to https://developer.mozilla.org/en-US/docs/XUL/Attribute/tooltip, when I use tooltip="_child" (as in treeTooltipLocal.xul), it should use the first tooltip child element. It's not doing it.

Comment 1

[Peter Kehl]

Attachment: treeTooltipGlobal.xul

Comment 2

[Neil Deakin]

treechildren doesn't layout or draw its child elements so this is correct. You'll need to point to an element elsewhere.

Comment 3

[Peter Kehl]

The behaviour may be correct. However, the documentation is not:

https://developer.mozilla.org/en-US/docs/XUL/treechildren#Attributes clearly lists 'tooltip' attribute (even though inherited from XUL). That page doesn't mention anything about treechildren not laying out/drawing its child elements.

That page links to https://developer.mozilla.org/en-US/docs/XUL/Attribute/tooltip, which doesn't mention this special treechildren-specific behaviour, either.

The documentation doesn't clearly describe the behaviour. There may be docs on this somewhere else, but that doesn't matter; the above docs are misleading (for treechildren).

I'm requesting the docs to be changed. Putting this back to UNCONFIRMED.

Comment 4

[Peter Kehl]

Attachment: treeItemOrRowTooltip.xul

Comment 5

[Peter Kehl]

Also, tooltip="_child" doesn't work for <treeitem> or <treecell>. You need to fix their documentation, too.

See attached treeItemOrRowTooltip.xul.

Comment 6

[Peter Kehl]

Implementation of <tree>, <treeitem>, <treecell> etc. seems to be a can of worms. According to https://developer.mozilla.org/en-US/docs/XUL/treecell and similar respective pages, they're supposed to have 'className' property, inherited from XUL, which operates on 'class' attribute.

However, setting 'className' property has no visual effect.

Comment 7

[Neil Deakin]

No, everything inside a treechildren element is not drawn directly. The children inside it only serve as a shorthand placeholders for the data to be placed in the tree for those simple cases where you don't want to implement a tree view.

This is all documented at https://developer.mozilla.org/en/XUL_Tutorial/Trees