Bootstrap 3 to 4 transition

Recent Progress (post branch 19 fork)

The Bootstrap 4 experimental branch has been merged into trunk, and branch 19 has been created and is running on the "pre-dogfood" servers such as nextthemes.tiki.org. Themes.tiki.org is scheduled to be the first of the live project sites to be updated to branch 19 for testing. Issues to be dealt with that show up in this testing or local testing are listed on

Bootstrap 4 experimental branch

I've started going through the themes directory making the necessary changes. The first goal was to get a completed SCSS compile, for the base files (tiki_base.css) initially. Of course even after updating many variable names, etc., there were still errors due to the many differences between the Bootstrap versions. Update: All of the themes in the Tiki package now compile without errors and most styling details are implemented; in other words, the themes are mostly updated from Bootstrap 3 to Bootstrap 4 compatibility.

Scout-App

The PHP SCSS compiler that can be accessed from the terminal in PhpStorm, etc. doesn't give much information about compile errors — sometimes just a line number, but we don't know in what file or the nature of the error. Maybe the author can be approached to improve this. For now, I downloaded a free application called Scout-App (

Browser Support

As Bootstrap 4 states "Dropped IE8, IE9, and iOS 6 support. v4 is now only IE10+ and iOS 7+. For sites needing either of those, use v3." since Tiki 19.x we are dropping the support for these too.
See

Updating a Tiki theme from Bootstrap 3 to 4

Please see ) have used to update the themes in the Tiki package, as well as the

Tiki code migration

Generic Bootstrap changes

For a summary of Bootstrap changes between 3 and 4, please read

Some main points for Tiki (my quick check):

Dropped .page-header - class. The use of this in Tiki needs to be checked.

Renamed .img-responsive to .img-fluid. - This needs to be updated in the img plugin and other locations.

Buttons: Removed .btn-default and added .btn-secondary. - Instances of btn-default in tpls, etc. will need to be updated so (in this order):

Change instances of btn-primary to btn-secondary.
Change instances of btn-default to btn-primary.

Dropdowns: Dropdown items now require the .dropdown-item class, so this needs updating.

Specific Tiki code tasks/bugs

Side column show/hide anchors don't work properly.
- Fixed in r66950 for basic layout; implement in other layouts and test.
Card (formerly "panel") background and foreground colors aren't set by card classes, but by separate text and background color classes, like bg-primary and text-dark. Discussion is needed about how to replace our previously used panel-default coloring for former panels coded directly in .tpl files. For modules, the color classes can be input as parameters.
- This is being resolved, with standard (no particular coloring) cards plus alert colors where needed. Maybe remaining instances to convert.
Navbars, instead of having \*-default and \*-inverse classes for coloring, now use \*navbar-light and \*-dark, and bg-light and bg-dark classes can also be used, and other background color possibilities possible. So themes should support at least light and dark. The color of the navbar itself (as a menu) can be set in admin-modules (so works already for the "social" fixed-top layout's top ).
But there should be an admin L&F selector for the top and topbar divs beyond the navbar, for the site.
(CMS) Article display will need revising to accommodate FB link image specs. The BS4 equivalent of what is being used now for Tiki's CMS articles is very simple and has no CSS opportunities for modifying the displayed image size.
Hopefully the article layout revising can also enable positioning the article image / featured image either to the side or above the article text (
~~The new drag-and-drop menu admin doesn't seem to work.~~ Ok now.

~~Popovers containing links disappear too quickly on hover so the links can't be clicked.~~ Fixed.

~~Was fixed but now unfixed again. Discussion started about open on click vs. open on hover. High priority to fix because it's hard to admin a test site with this broken.~~ Fixed again .

Tour doesn't work, in a quick test of an existing tour. The first popup appears but the second doesn't. But according to

Other possible related changes

Consolidate layout templates to reduce redundancy. Maybe the two fixed-navbar layouts could be reduced to one, and maybe the "classic" and "wide side column" layouts could be reduced to one. Or maybe all could be reduced to one if there is a checkbox in L&F admin for "Fixed-top navbar". Reduction to three layout templates is done other than renaming and maybe other details.
Consolidate menu types ("Bootstrap" and "CSS/suckerfish" and Tiki legacy) and add Smartmenus (
Pluses:
- Simpler menu backend construction
- Simpler CSS to maintain (and learn, for new theme authors)

Minuses:
- Bootstrap parent link only opens dropdown and isn't for navigation (but

Put wiki page elements (like wiki topline, pagebar, action icons for print, etc.) in modules for more flexibility in page layout.

Make the meaning of button colors intuitive and consistent: See

Mostly done.

Add second horizontal scroll bar at the top of scrollable tables and other wide content -

Commits to branch outside of the themes directory:

[-]

At Jonny's suggestion, the commits to the experimental branch that aren't in the themes directory are being recorded here. This should smooth the merge of the branch back to trunk.

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Revision: 65126
          http://sourceforge.net/p/tikiwiki/code/65126
Author:   chibaguy
Date:     2018-01-08 06:14:25 +0000 (Mon, 08 Jan 2018)
Log Message:
<strike>-</strike><strike>-</strike>-
[UPD] Update Classic layout's module.tpl (has shadow div) relative to default modoule.tpl, and to Bootstrap 4 beta 3.

Modified Paths:
<strike>-</strike><strike>-</strike>----
    branches/experimental/bootstrap4/templates/layouts/classic/module.tpl

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Revision: 65112
          http://sourceforge.net/p/tikiwiki/code/65112
Author:   chibaguy
Date:     2018-01-07 12:26:15 +0000 (Sun, 07 Jan 2018)
Log Message:
<strike>-</strike><strike>-</strike>-
[FIX] Update navbar class for fixed-top position (.navbar-fixed-top -> .fixed-top).

Modified Paths:
<strike>-</strike><strike>-</strike>----
    branches/experimental/bootstrap4/templates/layouts/fixed_top_modules/layout_view.tpl

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Revision: 65093
          http://sourceforge.net/p/tikiwiki/code/65093
Author:   chibaguy
Date:     2018-01-05 17:53:05 +0000 (Fri, 05 Jan 2018)
Log Message:
<strike>-</strike><strike>-</strike>-
[FIX] Adjust grid classes on center, left and right columns for correct size and order in various display sizes.

Modified Paths:
<strike>-</strike><strike>-</strike>----
    branches/experimental/bootstrap4/templates/layouts/fixed_top_modules/layout_view.tpl

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Revision: 65092
          http://sourceforge.net/p/tikiwiki/code/65092
Author:   chibaguy
Date:     2018-01-05 17:47:55 +0000 (Fri, 05 Jan 2018)
Log Message:
<strike>-</strike><strike>-</strike>-
[FIX] Adjust grid classes on center, left and right columns for correct size and order in various display sizes.

Modified Paths:
<strike>-</strike><strike>-</strike>----
    branches/experimental/bootstrap4/templates/layouts/header_middle_footer_containers_3-6-3/layout_view.tpl

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Revision: 65091
          http://sourceforge.net/p/tikiwiki/code/65091
Author:   chibaguy
Date:     2018-01-05 17:03:14 +0000 (Fri, 05 Jan 2018)
Log Message:
<strike>-</strike><strike>-</strike>-
[FIX] Adjust grid classes on center, left and right columns for correct size and order in various display sizes.

Modified Paths:
<strike>-</strike><strike>-</strike>----
    branches/experimental/bootstrap4/templates/layouts/basic/layout_view.tpl
    branches/experimental/bootstrap4/templates/layouts/classic/layout_view.tpl
    branches/experimental/bootstrap4/templates/layouts/social/layout_view.tpl

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Revision: 65089
          http://sourceforge.net/p/tikiwiki/code/65089
Author:   chibaguy
Date:     2018-01-05 14:06:02 +0000 (Fri, 05 Jan 2018)
Log Message:
<strike>-</strike><strike>-</strike>-
[FIX] Put side-col-toggle divs in a row div to prevent interference with content columns. (Todo: find out why flex widths aren't working.)

Modified Paths:
<strike>-</strike><strike>-</strike>----
    branches/experimental/bootstrap4/templates/layouts/social/layout_view.tpl

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Revision: 65088
          http://sourceforge.net/p/tikiwiki/code/65088
Author:   chibaguy
Date:     2018-01-05 12:48:15 +0000 (Fri, 05 Jan 2018)
Log Message:
<strike>-</strike><strike>-</strike>-
[FIX] Adjust grid classes on center, left and right columns for correct size and order in various display sizes.

Modified Paths:
<strike>-</strike><strike>-</strike>----
    branches/experimental/bootstrap4/templates/layouts/social/layout_view.tpl

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Revision: 65033
          http://sourceforge.net/p/tikiwiki/code/65033
Author:   chibaguy
Date:     2017-12-31 09:36:39 +0000 (Sun, 31 Dec 2017)
Log Message:
<strike>-</strike><strike>-</strike>-
[UX] Don't display side-column toggles in narrow screens; adjust grid classes.

Modified Paths:
<strike>-</strike><strike>-</strike>----
    branches/experimental/bootstrap4/templates/layouts/basic/layout_view.tpl

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Revision: 64411
          http://sourceforge.net/p/tikiwiki/code/64411
Author:   chibaguy
Date:     2017-10-28 10:07:43 +0000 (Sat, 28 Oct 2017)
Log Message:
<strike>-</strike><strike>-</strike>-
[UPD] Add dropdown-link classes in Page actions dropdown.

Modified Paths:
<strike>-</strike><strike>-</strike>----
    branches/experimental/bootstrap4/templates/tiki-wiki_topline.tpl

Modified: branches/experimental/bootstrap4/templates/tiki-wiki_topline.tpl

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Revision: 64410
          http://sourceforge.net/p/tikiwiki/code/64410
Author:   chibaguy
Date:     2017-10-28 08:48:26 +0000 (Sat, 28 Oct 2017)
Log Message:
<strike>-</strike><strike>-</strike>-
[UPD] Add Bootstrap 4 classes to navbar ul item and a .

Modified Paths:
<strike>-</strike><strike>-</strike>----
    branches/experimental/bootstrap4/lib/smarty_tiki/block.tabset.php

Modified: branches/experimental/bootstrap4/lib/smarty_tiki/block.tabset.php

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Revision: 64409
          http://sourceforge.net/p/tikiwiki/code/64409
Author:   chibaguy
Date:     2017-10-28 08:22:36 +0000 (Sat, 28 Oct 2017)
Log Message:
<strike>-</strike><strike>-</strike>-
[UPD] Increase thumbnail size.

Modified Paths:
<strike>-</strike><strike>-</strike>----
    branches/experimental/bootstrap4/templates/admin/include_look.tpl

Modified: branches/experimental/bootstrap4/templates/admin/include_look.tpl

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Revision: 64408
          http://sourceforge.net/p/tikiwiki/code/64408
Author:   chibaguy
Date:     2017-10-28 08:17:16 +0000 (Sat, 28 Oct 2017)
Log Message:
<strike>-</strike><strike>-</strike>-
[UPD] Update theme selector and thumbnail to Flexbox.

Modified Paths:
<strike>-</strike><strike>-</strike>----
    branches/experimental/bootstrap4/templates/admin/include_look.tpl

Modified: branches/experimental/bootstrap4/templates/admin/include_look.tpl

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Revision: 64407
          http://sourceforge.net/p/tikiwiki/code/64407
Author:   chibaguy
Date:     2017-10-28 07:50:33 +0000 (Sat, 28 Oct 2017)
Log Message:
<strike>-</strike><strike>-</strike>-
[UPD] Update remaining layout files to Flexbox.

Modified Paths:
<strike>-</strike><strike>-</strike>----
    branches/experimental/bootstrap4/templates/layouts/basic/layout_view.tpl
    branches/experimental/bootstrap4/templates/layouts/classic/layout_view.tpl
    branches/experimental/bootstrap4/templates/layouts/fixed_top_modules/layout_view.tpl
    branches/experimental/bootstrap4/templates/layouts/header_middle_footer_containers_3-6-3/layout_view.tpl

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Revision: 64383
          http://sourceforge.net/p/tikiwiki/code/64383
Author:   chibaguy
Date:     2017-10-26 16:09:30 +0000 (Thu, 26 Oct 2017)
Log Message:
<strike>-</strike><strike>-</strike>-
[FIX] Fix content column order.

Modified Paths:
<strike>-</strike><strike>-</strike>----
    branches/experimental/bootstrap4/templates/layouts/basic/layout_view.tpl

Modified: branches/experimental/bootstrap4/templates/layouts/basic/layout_view.tpl

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Revision: 64381
          http://sourceforge.net/p/tikiwiki/code/64381
Author:   chibaguy
Date:     2017-10-26 12:48:52 +0000 (Thu, 26 Oct 2017)
Log Message:
<strike>-</strike><strike>-</strike>-
[UPD] Update following upgrade to Bootstrap 4 beta 2. Amelia compiles ok now also, but still working out a good arrangement of files, etc.

Modified Paths:
<strike>-</strike><strike>-</strike>----
    branches/experimental/bootstrap4/lib/smarty_tiki/block.accordion_group.php (Replaced CSS selector "panel" with "card", only.)
    ...

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Revision: 64379
          http://sourceforge.net/p/tikiwiki/code/64379
Author:   chibaguy
Date:     2017-10-26 05:45:26 +0000 (Thu, 26 Oct 2017)
Log Message:
<strike>-</strike><strike>-</strike>-
[UPD] Further update social layout navbar construction and styling.

Modified Paths:
<strike>-</strike><strike>-</strike>----
    branches/experimental/bootstrap4/templates/layouts/social/layout_view.tpl

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Revision: 64316
          http://sourceforge.net/p/tikiwiki/code/64316
Author:   chibaguy
Date:     2017-10-18 16:58:00 +0000 (Wed, 18 Oct 2017)
Log Message:
<strike>-</strike><strike>-</strike>-
[FIX] Typo (heading should be header).

Modified Paths:
<strike>-</strike><strike>-</strike>----
    branches/experimental/bootstrap4/templates/module.tpl

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Revision: 64308
          http://sourceforge.net/p/tikiwiki/code/64308
Author:   chibaguy
Date:     2017-10-18 10:20:21 +0000 (Wed, 18 Oct 2017)
Log Message:
<strike>-</strike><strike>-</strike>-
[UPD] Plugin warning updated to BS4 (more class changes, etc.).

Modified Paths:
<strike>-</strike><strike>-</strike>----
    branches/experimental/bootstrap4/templates/tiki-plugin_blocked.tpl

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Revision: 64307
          http://sourceforge.net/p/tikiwiki/code/64307
Author:   chibaguy
Date:     2017-10-18 10:18:43 +0000 (Wed, 18 Oct 2017)
Log Message:
<strike>-</strike><strike>-</strike>-
[UPD] Updated button types (classes) for Bootstrap 4 (no more "default"; now "primary, secondary, etc.")

Modified Paths:
<strike>-</strike><strike>-</strike>----
    branches/experimental/bootstrap4/lib/smarty_tiki/function.button.php

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Revision: 64306
          http://sourceforge.net/p/tikiwiki/code/64306
Author:   chibaguy
Date:     2017-10-18 09:41:05 +0000 (Wed, 18 Oct 2017)
Log Message:
<strike>-</strike><strike>-</strike>-
[UPD] Plugin warning updated to BS4. Todo: find (or wait for from Bootstrap) method for auto-inverse text color against dark background.

Modified Paths:
<strike>-</strike><strike>-</strike>----
    branches/experimental/bootstrap4/templates/tiki-plugin_blocked.tpl

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Revision: 64302
          http://sourceforge.net/p/tikiwiki/code/64302
Author:   chibaguy
Date:     2017-10-17 15:55:08 +0000 (Tue, 17 Oct 2017)
Log Message:
<strike>-</strike><strike>-</strike>-
[UPD] Update basic and social layout files to flexbox (social navbar not right yet).

Modified Paths:
<strike>-</strike><strike>-</strike>----
    branches/experimental/bootstrap4/templates/layouts/basic/layout_view.tpl
    branches/experimental/bootstrap4/templates/layouts/social/layout_view.tpl

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Revision: 64301
          http://sourceforge.net/p/tikiwiki/code/64301
Author:   chibaguy
Date:     2017-10-17 11:55:22 +0000 (Tue, 17 Oct 2017)
Log Message:
<strike>-</strike><strike>-</strike>-
[UPD] Update to flexbox layout classes.

Modified Paths:
<strike>-</strike><strike>-</strike>----
    branches/experimental/bootstrap4/templates/layouts/basic/layout_view.tpl

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Revision: 64297
          http://sourceforge.net/p/tikiwiki/code/64297
Author:   jonnybradley
Date:     2017-10-17 10:37:26 +0000 (Tue, 17 Oct 2017)
Log Message:
<strike>-</strike><strike>-</strike>-
[FIX] bootstrap4: popper.js was removed from BS4, replace temporarily with the CDN version for a quick fix (thanks chibaguy)

Modified Paths:
<strike>-</strike><strike>-</strike>----
    branches/experimental/bootstrap4/lib/setup/theme.php

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Revision: 64296
          http://sourceforge.net/p/tikiwiki/code/64296
Author:   chibaguy
Date:     2017-10-17 10:02:07 +0000 (Tue, 17 Oct 2017)
Log Message:
<strike>-</strike><strike>-</strike>-
[UPD] Less to SCSS transition (update file names, variables, etc.). Also (so far) made a simple replacement of "panel" with "card" in module.tpl.

Modified Paths:
<strike>-</strike><strike>-</strike>----
    branches/experimental/bootstrap4/templates/module.tpl
    (plus theme files)

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Revision: 64190
          http://sourceforge.net/p/tikiwiki/code/64190
Author:   chibaguy
Date:     2017-10-10 04:10:27 +0000 (Tue, 10 Oct 2017)
Log Message:
<strike>-</strike><strike>-</strike>-
[UPD] Beginning Less to SCSS transition (updating variable name syntax).

Modified Paths:
<strike>-</strike><strike>-</strike>----
    branches/experimental/bootstrap4/templates/styleguide/sections/navbars.tpl
    (plus theme files)

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Revision: 64184
          http://sourceforge.net/p/tikiwiki/code/64184
Author:   jonnybradley
Date:     2017-10-09 09:13:47 +0000 (Mon, 09 Oct 2017)
Log Message:
<strike>-</strike><strike>-</strike>-
[FIX] bootstrap4: Catch all scss exceptions

Modified Paths:
<strike>-</strike><strike>-</strike>----
    branches/experimental/bootstrap4/lib/core/Tiki/Command/ScssCompileCommand.php

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Revision: 64183
          http://sourceforge.net/p/tikiwiki/code/64183
Author:   jonnybradley
Date:     2017-10-09 08:40:01 +0000 (Mon, 09 Oct 2017)
Log Message:
<strike>-</strike><strike>-</strike>-
[FIX] bootstrap4: Removed exceptions display by mistake - oops, back now 

Modified Paths:
<strike>-</strike><strike>-</strike>----
    branches/experimental/bootstrap4/lib/core/Tiki/Command/ScssCompileCommand.php

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Revision: 64182
          http://sourceforge.net/p/tikiwiki/code/64182
Author:   jonnybradley
Date:     2017-10-09 08:28:55 +0000 (Mon, 09 Oct 2017)
Log Message:
<strike>-</strike><strike>-</strike>-
[ENH] bootstrap4: Use scss compile directly in the ScssPhp\Compiler, so we can handle exceptions and display the problem rather than outputting them to the css file

Modified Paths:
<strike>-</strike><strike>-</strike>----
    branches/experimental/bootstrap4/lib/core/Tiki/Command/ScssCompileCommand.php

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Revision: 64178
          http://sourceforge.net/p/tikiwiki/code/64178
Author:   jonnybradley
Date:     2017-10-09 05:24:33 +0000 (Mon, 09 Oct 2017)
Log Message:
<strike>-</strike><strike>-</strike>-
[ENH] bootstrap4: Add scss:compile command and remove less (untested, scss files coming soon 

Modified Paths:
<strike>-</strike><strike>-</strike>----
    branches/experimental/bootstrap4/lib/core/Tiki/Command/ConsoleApplicationBuilder.php

Added Paths:
<strike>-</strike><strike>-</strike>-
    branches/experimental/bootstrap4/lib/core/Tiki/Command/ScssCompileCommand.php

Removed Paths:
<strike>-</strike><strike>-</strike>---
    branches/experimental/bootstrap4/lib/core/Tiki/Command/LessCompileCommand.php

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Revision: 64177
          http://sourceforge.net/p/tikiwiki/code/64177
Author:   jonnybradley
Date:     2017-10-09 04:43:29 +0000 (Mon, 09 Oct 2017)
Log Message:
<strike>-</strike><strike>-</strike>-
[UPD] bootstrap4: Add leafo/scssphp and remove less.php

Modified Paths:
<strike>-</strike><strike>-</strike>----
    branches/experimental/bootstrap4/vendor_bundled/composer.json
    branches/experimental/bootstrap4/vendor_bundled/composer.lock

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Revision: 64176
          http://sourceforge.net/p/tikiwiki/code/64176
Author:   jonnybradley
Date:     2017-10-09 04:09:40 +0000 (Mon, 09 Oct 2017)
Log Message:
<strike>-</strike><strike>-</strike>-
[FIX] bootstrap4: Add include for bundled popper.js now required for bootstrap4 dropdowns

Modified Paths:
<strike>-</strike><strike>-</strike>----
    branches/experimental/bootstrap4/lib/setup/theme.php

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Revision: 64175
          http://sourceforge.net/p/tikiwiki/code/64175
Author:   chibaguy
Date:     2017-10-09 03:44:03 +0000 (Mon, 09 Oct 2017)
Log Message:
<strike>-</strike><strike>-</strike>-
[FIX] Use correct Bootstrap 4 beta information.

Modified Paths:
<strike>-</strike><strike>-</strike>----
    branches/experimental/bootstrap4/vendor_bundled/composer.json

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Revision: 64174
          http://sourceforge.net/p/tikiwiki/code/64174
Author:   chibaguy
Date:     2017-10-09 03:40:27 +0000 (Mon, 09 Oct 2017)
Log Message:
<strike>-</strike><strike>-</strike>-
[FIX] Use correct Bootstrap 4 beta information.

Modified Paths:
<strike>-</strike><strike>-</strike>----
    branches/experimental/bootstrap4/vendor_bundled/composer.lock

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Revision: 64173
          http://sourceforge.net/p/tikiwiki/code/64173
Author:   chibaguy
Date:     2017-10-09 02:10:06 +0000 (Mon, 09 Oct 2017)
Log Message:
<strike>-</strike><strike>-</strike>-
[FIX] Use better Bootstrap 4 version number.

Modified Paths:
<strike>-</strike><strike>-</strike>----
    branches/experimental/bootstrap4/vendor_bundled/composer.json

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Revision: 64172
          http://sourceforge.net/p/tikiwiki/code/64172
Author:   chibaguy
Date:     2017-10-08 16:40:00 +0000 (Sun, 08 Oct 2017)
Log Message:
<strike>-</strike><strike>-</strike>-
[UPD] Switch to Bootstrap 4 beta.

Modified Paths:
<strike>-</strike><strike>-</strike>----
    branches/experimental/bootstrap4/vendor_bundled/composer.json

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Revision: 65853
         http://sourceforge.net/p/tikiwiki/code/65853
Author:   jonnybradley
Date:     2018-04-01 07:47:12 +0000 (Sun, 01 Apr 2018)
Log Message:
<strike>-</strike><strike>-</strike>-
[FIX] bootstrap4: Fix three of the ways bs modals are opened for AJAX content use, buttons with data attributes, openModal and clickModal (i.e. tracker fields) and plugin edit.
Some refactoring and convergence would be nice after we merge back to trunk...

Modified Paths:
<strike>-</strike><strike>-</strike>----
   branches/experimental/bootstrap4/lib/jquery_tiki/pluginedit.js
   branches/experimental/bootstrap4/lib/jquery_tiki/tiki-jquery.js

">http://sourceforge.net/p/tikiwiki/code/65853

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Revision: 65853
         http://sourceforge.net/p/tikiwiki/code/65853
Author:   jonnybradley
Date:     2018-04-01 07:47:12 +0000 (Sun, 01 Apr 2018)
Log Message:
<strike>-</strike><strike>-</strike>-
[FIX] bootstrap4: Fix three of the ways bs modals are opened for AJAX content use, buttons with data attributes, openModal and clickModal (i.e. tracker fields) and plugin edit.
Some refactoring and convergence would be nice after we merge back to trunk...

Modified Paths:
<strike>-</strike><strike>-</strike>----
   branches/experimental/bootstrap4/lib/jquery_tiki/pluginedit.js
   branches/experimental/bootstrap4/lib/jquery_tiki/tiki-jquery.js

Testing a quick and dirty BS4 integration (older information)

[+]

To get the stylesheets to compile, I made a "bridge file" to map old variables in existing-theme Less files to new Sass equivalents or else just to some value, and kept fixing missing variable definitions until the compile errors stopped.

PHPStorm has a Sass file watcher plugin, but you have to get and install the Sass watcher if you don't have it already. It's a Ruby gem. There are also some PHP scripts for compiling Sass files, so we'll have another chance to work the kinks out of that method.

Steps of the test

First of all, the theme's "less" directory needs to be renamed "scss". (While the CSS preprocessor is called "Sass", the directory name and file extension is ".scss".)
To be consistent with the convention, I added an underscore to the beginning of all Sass partial files (the files that are imported), like "_tiki-selectors.scss".
Within the Sass files, the variable name syntax needs to be converted, so instances of "@variable-name" are changed to "$variable-name".
In Bootstrap 3, the "variables.less" file is essentially a list of definitions for variables that can be modified for the theme. In Bootstrap 4, there is no exact equivalent. Instead there is a "_custom.scss" file that is empty initially but can contain new definitions of variables to override the Bootstrap defaults.
To customize a site or theme, the idea now is to use a _custom.scss file that contains a copy of the rules in "_variables.less" to be edited. Of course not all of the older variable names still exist, and some new ones are added. Since the new _variables.scss" is long and many variables aren't likely to need overriding, a good approach might be to make a general "_custom.scss" template with variables most often/likely specified by themes and compare this to the old "variables.less" file to do the updating/overriding.
Less-to-Sass syntax conversions are needed in some theme and "base_files" files for things like image paths, color manipulation, etc.

In my test, I just modified one Smarty file - templates/layouts/basic/layout_view.tpl - because on first view the page columns were out of order. I rearranged div#col2, div#col1, and div#col3 into their actual order on the page. I haven't researched it yet, but it seems the "pull", "push", and "offset" classes are no longer used. In Bootstrap 4, column layout uses Flexbox by default, so in grids there is no longer floating columns into place, adding clearfix, and so on. ### Test results

With just the basic adjustments to the Amelia theme files, the basic modification of layout_view.tpl, and pointing to the Bootstrap 4 lib (ignoring the Bootstrap 3 lib), the result was that the Tiki site did look and work pretty much like a Tiki site.

Issues that came up in the test

Navbars have been revamped (and simplified) so this will have to be done in Tiki as well.
The vertical menus were displaying horizontally. I didn't check further on this yet.
Tabs, dropdowns and other lists containing links have new HTML so those will need updating.
Modals, like the wiki edit help modal popup, aren't working. The shaded background appears, along with the top section of the modal, but the full modal and its content don't appear.
Wells, panels, and so on have been replaced by "cards" so Tiki's modules, especially, and other instances of the old div classes will have to be updated.
I understand forms have also undergone significant changes but I didn't look yet at what updating will be needed.

Two kinds of changes to deal with

Looks like there are basically two kinds of changes we'll need to cope with. One is the switch from Less to Sass. That's pretty straightforward as it mostly involves file names and variable names in those files (@variable to $variable, etc.). Of course, there are some method differences but probably not many that will cause trouble for us (one I came across is a color function - Less uses "spin" and Sass uses "adjust_color"). Also, paths like the image path variable have slightly different syntax. But I adjusted these as I came across them and will post some docs.

The second kind of change is with the Bootstrap bits themselves. In my "trunk - bootstrap 4 alpha", I found the grid layout and typography worked nicely already (BS4 switches to rem for the grid and for the typography), but panels and wells have been replaced by the card class, so in the templates we're going to have to do those replacements. Forms, especially horizontal forms, have changed quite a bit and will need to be adjusted. Also, the navbar is being simplified, as apparently we're not alone in having trouble wrangling content into that area. Menus and tabs weren't working yet either in my installation or at the Bootstrap 4 demo so apparently, they're still being worked out.

There are also Sass-variable files for Chosen. And

Interestingly, for

Useful links

Bootstrap 4

SCSS (Sass)/Less

Flexbox (Bootstrap 4 default layout method)

Please wait

Recent Progress (post branch 19 fork)

Bootstrap 4 experimental branch

Scout-App

Browser Support

Updating a Tiki theme from Bootstrap 3 to 4

Tiki code migration

Generic Bootstrap changes

Specific Tiki code tasks/bugs

Other possible related changes

Commits to branch outside of the themes directory:

Testing a quick and dirty BS4 integration (older information)

Steps of the test

Issues that came up in the test

Two kinds of changes to deal with

Useful links

Switch Theme

About Tiki

Community

Documentation

Support

Development

Legal

Tiki Project Sites

Networks

Navigation and related functionality and content

Related content

Please wait

Page actions

Scout-App

Generic Bootstrap changes

Testing a quick and dirty BS4 integration (older information)

Steps of the test

Issues that came up in the test

Two kinds of changes to deal with