17 Oct
2014
17 Oct
'14
3:03 p.m.
On Fri, Oct 17, 2014 at 1:45 PM, Anca Luca <lucaa(a)xwiki.com> wrote:
Hello guys,
I have tried to learn a bit of bootstrap last night to figure out how to do
things, and I did the following test page to test the grid system:
http://incubator.myxwiki.org/xwiki/bin/view/Sandbox/TestFlamingo?skin=flami…
I have a few questions related to using the grid system (I didn't yet get
to other parts of bootstrap/flamingo):
The questions will get fuzzy-er and fuzzy-er as they advance. Please bare
with me, I have a lot of questions and little knowledge about bootstrap, I
am trying to figure out how should it be used in general (it's supposed to
be simple but I don't feel like it) and if there are some special rules of
usage in XWiki.
1/ What would be the proper structure if we wanted to make a grid layout in
a wiki page ?
My experiments show that the first example, div class=row and then columns
inside will not work (example "doesn't fit properly"). The second example
works, but that means we need to add .container-fluid all around that.
Let's assume for the next questions that we're using the .container-fluid
structure.
Theoretical you cannot nest .containers since they add padding and you will
not be able to align the inner grids (they will be shifted with the value
of the padding) (that's why the rows is using negative margin).
In theory the good solution is the first one (just with the row). Why is
not working is because on #xwikicontent we have 'overflow: auto'. If you
remove that line, the grid should be displayed correctly (from the text
alignment point of view). Why we have 'overflow: auto'? Because of
http://jira.xwiki.org/browse/XWIKI-10791 and because in XWiki.XWikiSyntax
we have very big tables, etc. I don't have a clear solution for this
problem, maybe is simpler than what I think, but the big issue is that in
#xwikicontent we have, depending on the context, either layout containers,
either text (for wiki pages). The user's content needs to be overflowed,
while when doing interface the developers are in control of the grid and
know 'exactly' was goes in.
2/ On the bootstrap website here
http://getbootstrap.com/css/#overview-container I found that "neither
container is nestable" . I don't really know how to understand this phrase,
especially in the context of needing to put it in the content of my page in
order to make a grid. Is it dangerous to put it? Could it end up being
nested and thus not good?
3/ On the bootstrap website here http://getbootstrap.com/css/#grid I found
that any row must be in a container (which matches my usage). But I am
looking at the .document-header which contains the title and the edit
buttons, and it is not in a container. Or is it? If that one is in a
container, does that mean that we have a "global" container in the page in
XWiki which would also surround the page content (#xwikicontent) and then
if I put another .container-fluid in the document content in order to make
the grid I would be nesting containers?
Flamingo is not a clean skin. We still haven't a response to the Standards
discussion http://design.xwiki.org/xwiki/bin/view/Proposal/UIStandards .
What do you do when writing application in Flamingo? Do you keep some of
the old classes? do you replace them with Bootstrap ones? In Flamingo we
have a mix :) depending on whom did the commit. You will see places where
the old structure is kept and other places where you have Boostrap classes.
Would you have expected to have something like "<div
id='xwikimaincontainer' class='container-fluid'>"? This is a
solution too,
but it increases the HTML. Also maybe we would want to add the Bootstrap
classes and remove the old ones (in order to keep the structure clean), but
no one know if that ids and classes are used in some JS somewhere in the
platform and thus you shouldn't remove them.
So in order not to add Bootstrap classes, but have their functionality, we
'cheated' by using LESS (mixins and extends). For example
https://github.com/xwiki/xwiki-platform/blob/master/xwiki-platform-core/xwi…
and
https://github.com/xwiki/xwiki-platform/blob/master/xwiki-platform-core/xwi…
With LESS and Boostrap mixins we made contentcontainer a .row without
explicitly writing it in the structure. You can take a look at layout.less
(and actually more less files in less/ folder). I assume some things might
not be perfect since Flamingo was done in a hurry.
4/ I didn't fully understand this story about the
negative margins that
compensate for padding in order for columns to align with non-grid
content... ( 5th and 6th bullets in here http://getbootstrap.com/css/#grid
).
I did some examples in my test page in section "Fits properly", and I would
like to understand better this principle / approach. What would be the
correct way to mix & match full width elements and grid in the document
content? (by full width I mean either a paragraph with text, or other
elements that need to take up the whole width of the document content area
#xwikicontent).
a) anything that has to be full-width should be out of a .container-fluid
and whenever I want columns I make a new .container-fluid? -- the text
"this is the " in section Fits Properly
b) can I put stuff in a container fluid? If I do, then why is it indented?
The text "dancing" in section Fits Properly
c) I read in BS documentation that only columns should be direct children
of .row so the text "text" in section Fits Properly is not an option
(although correctly displayed). Please confirm
Theoretically you should work just with rows and columns, see
http://getbootstrap.com/css/#grid-nesting
Of course some things might work :) since it's HTML and CSS, and simple
text is not very complicated, depends if you add more complex structures
and than expect to have correct margins and responsive behavior.
All your other questions might be already answered by the above mentions.
Take some time to play with the grid and as I said, some things in Flamingo
might need to be fixed.
Thanks,
Caty
d) I added a third column, with size 12 at the end, to
get something full
width. I guess this is one approach, but then its text is not aligned with
the left of the column, but, because it is a column itself, it has a
padding of 10px. So the texts are aligned (text in half column with text in
full width but the full width text is not aligned with the border of the
half column). Is it a bad practice to put borders directly on the
bootstraps column? Should I be putting border on an element that I have put
inside the bootstrap column? In this case, I would get a lot of space
between the left side of the screen and my text. Maybe some of that space
gets colored in a different color theme?
e) should I be matching and mixing full-width stuff and grid stuff at all?
Is this a good idea? or if I need a part of the content in a grid then I
just make all content a grid and make col-12 for all the stuff that needs
to be full-width?
5/ Also, I just noticed now that the content of a page is not (in) a column
( #xwikicontent ). I was thinking that it could be a 12 size column which
we could split further by using this strategy:
http://getbootstrap.com/css/#grid-nesting . Since the document-header is a
row with columns, I was thinking that the lower part of the page could be
as well... This way, aligning stuff inside could be more natural (see
subquestion 4 d before).
Thank you a lot for your patience, I do take RTFMs as I am sure there are
parts of the internet that could enlight me on the topic. What I would like
to know is how did we plan to use bootstrap grid in the context of XWiki
for custom stuff, if there are some special rules...
Anca
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