diff -r 8c757af2fc50 -r 1485db1e2b5e src/pyams_content/locales/pyams_content.pot
--- a/src/pyams_content/locales/pyams_content.pot	Wed Jun 24 12:07:40 2020 +0200
+++ b/src/pyams_content/locales/pyams_content.pot	Fri Jun 26 12:54:13 2020 +0200
@@ -6,7 +6,7 @@
 msgid ""
 msgstr ""
 "Project-Id-Version: PACKAGE 1.0\n"
-"POT-Creation-Date: 2020-06-19 18:01+0200\n"
+"POT-Creation-Date: 2020-06-24 12:02+0200\n"
 "PO-Revision-Date: YEAR-MO-DA HO:MI+ZONE\n"
 "Last-Translator: FULL NAME <EMAIL@ADDRESS\n"
 "Language-Team: LANGUAGE <LL@li.org>\n"
@@ -1996,9 +1996,9 @@
 msgid "Add new illustration"
 msgstr ""
 
-#: ./src/pyams_content/component/theme/__init__.py:74
-#: ./src/pyams_content/component/theme/interfaces.py:73
-#: ./src/pyams_content/component/theme/interfaces.py:87
+#: ./src/pyams_content/component/theme/__init__.py:76
+#: ./src/pyams_content/component/theme/interfaces.py:74
+#: ./src/pyams_content/component/theme/interfaces.py:88
 #: ./src/pyams_content/component/theme/zmi/portlet.py:40
 #: ./src/pyams_content/root/zmi/search.py:177
 #: ./src/pyams_content/root/zmi/templates/advanced-search.pt:181
@@ -2006,31 +2006,31 @@
 msgid "Tags"
 msgstr ""
 
-#: ./src/pyams_content/component/theme/__init__.py:124
-#: ./src/pyams_content/component/theme/interfaces.py:114
-#: ./src/pyams_content/component/theme/interfaces.py:128
+#: ./src/pyams_content/component/theme/__init__.py:126
+#: ./src/pyams_content/component/theme/interfaces.py:115
+#: ./src/pyams_content/component/theme/interfaces.py:129
 #: ./src/pyams_content/component/theme/zmi/portlet.py:55
 #: ./src/pyams_content/shared/common/zmi/search.py:197
 msgid "Themes"
 msgstr ""
 
-#: ./src/pyams_content/component/theme/__init__.py:174
-#: ./src/pyams_content/component/theme/interfaces.py:155
-#: ./src/pyams_content/component/theme/interfaces.py:169
+#: ./src/pyams_content/component/theme/__init__.py:179
+#: ./src/pyams_content/component/theme/interfaces.py:175
+#: ./src/pyams_content/component/theme/interfaces.py:189
 #: ./src/pyams_content/component/theme/zmi/portlet.py:70
 #: ./src/pyams_content/shared/common/zmi/search.py:200
 msgid "Collections"
 msgstr ""
 
-#: ./src/pyams_content/component/theme/__init__.py:83
+#: ./src/pyams_content/component/theme/__init__.py:85
 msgid "no defined tag"
 msgstr ""
 
-#: ./src/pyams_content/component/theme/__init__.py:133
+#: ./src/pyams_content/component/theme/__init__.py:135
 msgid "no defined theme"
 msgstr ""
 
-#: ./src/pyams_content/component/theme/__init__.py:183
+#: ./src/pyams_content/component/theme/__init__.py:188
 msgid "no defined collection"
 msgstr ""
 
@@ -2052,22 +2052,44 @@
 msgid "Site or folder where tags search is displayed"
 msgstr ""
 
-#: ./src/pyams_content/component/theme/interfaces.py:51
+#: ./src/pyams_content/component/theme/interfaces.py:52
 msgid "Enable glossary?"
 msgstr ""
 
-#: ./src/pyams_content/component/theme/interfaces.py:56
+#: ./src/pyams_content/component/theme/interfaces.py:57
 msgid "Glossary thesaurus name"
 msgstr ""
 
-#: ./src/pyams_content/component/theme/interfaces.py:49
+#: ./src/pyams_content/component/theme/interfaces.py:148
+msgid "Enable search by collection?"
+msgstr ""
+
+#: ./src/pyams_content/component/theme/interfaces.py:149
+msgid ""
+"If 'yes', displayed collections will lead to a search engine displaying "
+"contents matching given collection"
+msgstr ""
+
+#: ./src/pyams_content/component/theme/interfaces.py:155
+msgid "Collections search target"
+msgstr ""
+
+#: ./src/pyams_content/component/theme/interfaces.py:156
+msgid "Site or folder where collections search is displayed"
+msgstr ""
+
+#: ./src/pyams_content/component/theme/interfaces.py:50
 msgid "You must specify search target when activating search by tags!"
 msgstr ""
 
-#: ./src/pyams_content/component/theme/interfaces.py:63
+#: ./src/pyams_content/component/theme/interfaces.py:64
 msgid "You must specify a glossary thesaurus to activate it!"
 msgstr ""
 
+#: ./src/pyams_content/component/theme/interfaces.py:164
+msgid "You must specify search target when activating search by collections!"
+msgstr ""
+
 #: ./src/pyams_content/component/theme/zmi/manager.py:46
 msgid "Tags settings..."
 msgstr ""
@@ -2076,30 +2098,34 @@
 msgid "Selected tags"
 msgstr ""
 
-#: ./src/pyams_content/component/theme/zmi/manager.py:117
+#: ./src/pyams_content/component/theme/zmi/manager.py:118
 msgid "Themes settings..."
 msgstr ""
 
-#: ./src/pyams_content/component/theme/zmi/manager.py:131
+#: ./src/pyams_content/component/theme/zmi/manager.py:132
 msgid "Selected themes"
 msgstr ""
 
-#: ./src/pyams_content/component/theme/zmi/manager.py:167
+#: ./src/pyams_content/component/theme/zmi/manager.py:169
 msgid "Collections settings..."
 msgstr ""
 
-#: ./src/pyams_content/component/theme/zmi/manager.py:181
+#: ./src/pyams_content/component/theme/zmi/manager.py:183
 msgid "Selected collections"
 msgstr ""
 
-#: ./src/pyams_content/component/theme/zmi/manager.py:93
+#: ./src/pyams_content/component/theme/zmi/manager.py:94
 msgid "Enable search by tag"
 msgstr ""
 
-#: ./src/pyams_content/component/theme/zmi/manager.py:100
+#: ./src/pyams_content/component/theme/zmi/manager.py:101
 msgid "Enable glossary"
 msgstr ""
 
+#: ./src/pyams_content/component/theme/zmi/manager.py:217
+msgid "Enable search by collection"
+msgstr ""
+
 #: ./src/pyams_content/component/theme/zmi/__init__.py:55
 #: ./src/pyams_content/shared/view/zmi/theme.py:49
 msgid "Tags..."
@@ -2209,7 +2235,7 @@
 #: ./src/pyams_content/features/share/zmi/container.py:155
 #: ./src/pyams_content/features/menu/zmi/__init__.py:217
 #: ./src/pyams_content/shared/form/interfaces.py:121
-#: ./src/pyams_content/shared/form/zmi/field.py:166
+#: ./src/pyams_content/shared/form/zmi/field.py:172
 #: ./src/pyams_content/shared/common/interfaces/types.py:45
 msgid "Label"
 msgstr ""
@@ -3124,7 +3150,7 @@
 msgid "Rich text description"
 msgstr ""
 
-#: ./src/pyams_content/features/thesaurus/interfaces.py:28
+#: ./src/pyams_content/features/thesaurus/interfaces.py:30
 msgid "HTML content"
 msgstr ""
 
@@ -3932,7 +3958,7 @@
 msgstr ""
 
 #: ./src/pyams_content/shared/form/interfaces.py:116
-#: ./src/pyams_content/shared/form/zmi/field.py:177
+#: ./src/pyams_content/shared/form/zmi/field.py:184
 msgid "Field type"
 msgstr ""
 
@@ -4167,37 +4193,37 @@
 msgid "« {handler} » form handler settings"
 msgstr ""
 
-#: ./src/pyams_content/shared/form/zmi/field.py:67
+#: ./src/pyams_content/shared/form/zmi/field.py:68
 msgid "Form fields..."
 msgstr ""
 
-#: ./src/pyams_content/shared/form/zmi/field.py:155
+#: ./src/pyams_content/shared/form/zmi/field.py:160
 #: ./src/pyams_content/shared/common/interfaces/types.py:41
 msgid "Name"
 msgstr ""
 
-#: ./src/pyams_content/shared/form/zmi/field.py:210
+#: ./src/pyams_content/shared/form/zmi/field.py:219
 msgid "Form fields list"
 msgstr ""
 
-#: ./src/pyams_content/shared/form/zmi/field.py:233
-#: ./src/pyams_content/shared/form/zmi/field.py:246
+#: ./src/pyams_content/shared/form/zmi/field.py:243
+#: ./src/pyams_content/shared/form/zmi/field.py:256
 msgid "Add form field"
 msgstr ""
 
-#: ./src/pyams_content/shared/form/zmi/field.py:284
+#: ./src/pyams_content/shared/form/zmi/field.py:295
 msgid "Edit form field properties"
 msgstr ""
 
-#: ./src/pyams_content/shared/form/zmi/field.py:186
+#: ./src/pyams_content/shared/form/zmi/field.py:193
 msgid "-- unknown field type --"
 msgstr ""
 
-#: ./src/pyams_content/shared/form/zmi/field.py:121
+#: ./src/pyams_content/shared/form/zmi/field.py:122
 msgid "No currently defined form field."
 msgstr ""
 
-#: ./src/pyams_content/shared/form/zmi/field.py:268
+#: ./src/pyams_content/shared/form/zmi/field.py:278
 msgid "Specified name is already used!"
 msgstr ""