Adds CommonMark Markdown (GitHub Flavored) as third text formatting option (#32424).

Patch by Jens Krämer.

git-svn-id: http://svn.redmine.org/redmine/trunk@21156 e93f8b46-1217-0410-a6f0-8f06a7374b81

1 files changed, 57 insertions, 0 deletions

diff --git a/lib/redmine/wiki_formatting/common_mark/helper.rb b/lib/redmine/wiki_formatting/common_mark/helper.rb
new file mode 100644
index 000000000..471835708
--- /dev/null
+++ b/lib/redmine/wiki_formatting/common_mark/helper.rb
@@ -0,0 +1,57 @@
+# frozen_string_literal: true
+
+# Redmine - project management software
+# Copyright (C) 2006-2021  Jean-Philippe Lang
+#
+# This program is free software; you can redistribute it and/or
+# modify it under the terms of the GNU General Public License
+# as published by the Free Software Foundation; either version 2
+# of the License, or (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, write to the Free Software
+# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
+
+module Redmine
+  module WikiFormatting
+    module CommonMark
+      module Helper
+        include Redmine::WikiFormatting::Markdown::Helper
+
+        def wikitoolbar_for(field_id, preview_url = preview_text_path)
+          heads_for_wiki_formatter
+          help_file = "/help/#{current_language.to_s.downcase}/wiki_syntax_common_mark.html"
+          # fall back to the english help page if there is none for the current
+          # language
+          unless File.readable? Rails.root.join("public", help_file)
+            help_file = "/help/en/wiki_syntax_common_mark.html"
+          end
+          url = "#{Redmine::Utils.relative_url_root}#{help_file}"
+          javascript_tag(
+            "var wikiToolbar = new jsToolBar(document.getElementById('#{field_id}')); " \
+            "wikiToolbar.setHelpLink('#{escape_javascript url}'); " \
+            "wikiToolbar.setPreviewUrl('#{escape_javascript preview_url}'); " \
+            "wikiToolbar.draw();"
+          )
+        end
+
+        # removes the 'underline' icon from the markdown toolbar since there
+        # is no such thing in CommonMark
+        def heads_for_wiki_formatter
+          unless @common_mark_heads_for_wiki_formatter_included
+            super
+            content_for :header_tags do
+              javascript_tag(%[delete jsToolBar.prototype.elements.ins;])
+            end
+            @common_mark_heads_for_wiki_formatter_included = true
+          end
+        end
+      end
+    end
+  end
+end