From 42dee75ba3dc3a5ed83987f880c4c3b0e306755e Mon Sep 17 00:00:00 2001
From: wdammak <26695620+wdammak@users.noreply.github.com>
Date: Tue, 1 May 2018 23:32:35 +0100
Subject: [PATCH] Add: Overload styles files from a current folder of module &
 theme

My goal is to overload css files only for the current module and without changing the source code of the module but just by adding a folder style in the module folder. Then just place the css files to overload in this folder they will be automatically added in the head.

The same method is applied to the current theme.

To test, for example, place a custom.css file in the societe/style/custom.css folder and check the head of a company module page.
---
 htdocs/main.inc.php | 48 +++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 48 insertions(+)

diff --git a/htdocs/main.inc.php b/htdocs/main.inc.php
index f1d6487d5de..19e74d1ddc2 100644
--- a/htdocs/main.inc.php
+++ b/htdocs/main.inc.php
@@ -1206,6 +1206,54 @@ function top_htmlhead($head, $title='', $disablejs=0, $disablehead=0, $arrayofjs
 		print '<link rel="stylesheet" type="text/css" href="'.$themepath.$themeparam.'">'."\n";
 		if (! empty($conf->global->MAIN_FIX_FLASH_ON_CHROME)) print '<!-- Includes CSS that does not exists as a workaround of flash bug of chrome -->'."\n".'<link rel="stylesheet" type="text/css" href="filethatdoesnotexiststosolvechromeflashbug">'."\n";
 
+		//Overload css files to the current theme
+		// Check if the /theme/nameoftheme/style folder exists and Add the contains css files to head
+		if (file_exists(dirname(dol_buildpath($conf->css, 0))."/style"))
+		{
+			//browse the css dir and add the contains css files
+			if ($handle = opendir(dirname(dol_buildpath($conf->css, 0))."/style"))
+			{
+				while (false !== ($entry = readdir($handle))) 
+				{
+					list($filename, $extension) = explode(".", $entry);
+					if ($entry !== '.' && $entry !== '..' && $extension == 'css')
+					{
+						print '<link rel="stylesheet" type="text/css" href="'.dirname(dol_buildpath($conf->css, 1))."/style/".$entry.'">'."\n";
+					}
+				}
+				closedir($handle);
+			}
+		}
+
+		//Overload css files to the current module
+		// Check if the /module/style folder exists and Add the contains css files to head
+		$cur_modulepart = explode("/",$_SERVER["PHP_SELF"]);
+		if(is_array($cur_modulepart) && count($cur_modulepart)>0)
+		{
+			foreach($conf->modules as $module)
+			{
+				if(in_array($module, $cur_modulepart))
+				{
+					if (file_exists(getcwd().DIRECTORY_SEPARATOR."style"))
+					{
+						//browse the style dir and add the contains css files
+						if ($handle = opendir(getcwd().DIRECTORY_SEPARATOR."style"))
+						{
+							while (false !== ($entry = readdir($handle))) 
+							{
+								list($filename, $extension) = explode(".", $entry);
+								if ($entry !== '.' && $entry !== '..' && $extension == 'css')
+								{
+									print '<link rel="stylesheet" type="text/css" href="'.dirname($_SERVER["PHP_SELF"])."/style/".$entry.'">'."\n";
+								}
+							}
+							closedir($handle);
+						}
+					}
+				}
+			}
+		}
+
 		// CSS forced by modules (relative url starting with /)
 		if (! empty($conf->modules_parts['css']))
 		{