[IMP] web: add options to field selector to filter the fields

Before this commit, the field selector had an unique option to filter
the fields it displays: filters.searchable, which tells the widget to
only display the searchable fields (which is the default). Now there
are two more options:

- fields: an explicit list of the fields to use (if null, let the
    widget get the fields itself (this is the default))
- followRelations: a boolean which is true if the user can follow
    relation to build a field chain (default to true)

These options are needed by Web Studio in enterprise where domain
construction for form view attrs can only use fields which are in the
view and do not follow relations.

1 files changed, 10 insertions, 8 deletions

diff --git a/addons/web/static/src/xml/base.xml b/addons/web/static/src/xml/base.xml
index 8abdf9160ed..9e38841b946 100644
--- a/addons/web/static/src/xml/base.xml
+++ b/addons/web/static/src/xml/base.xml
@@ -802,7 +802,7 @@
 </div>
 
 <div t-name="FieldSelector" class="o_field_selector">
-    <input type="text" t-att-value="widget.chain" t-att-readonly="!(widget.debug) and 1 or None"/>
+    <input type="text" t-att-value="widget.chain" t-att-readonly="!(widget.options.debugMode) and 1 or None"/>
     <div class="o_field_selector_controls">
         <i class="fa fa-exclamation-triangle o_field_selector_warning hidden" title="Invalid field chain"/>
     </div>
@@ -818,13 +818,15 @@
     </div>
 </div>
 <ul t-name="FieldSelector.page" t-attf-class="o_field_selector_page #{animation}">
-    <li t-foreach="lines" t-as="line"
-        t-attf-class="o_field_selector_item #{line.relation and 'o_field_selector_next_page' or 'o_field_selector_select_button'}#{line_index == 0 and ' active' or ''}"
-        t-att-data-name="line.name">
-        <t t-esc="line.string"/>
-        <div t-if="debug" class="text-muted o_field_selector_item_title"><t t-esc="line.name"/> (<t t-esc="line.type"/>)</div>
-        <i t-if="line.relation" class="fa fa-chevron-right o_field_selector_relation_icon" t-att-data-name="line.name"/>
-    </li>
+    <t t-foreach="lines" t-as="line">
+        <t t-set="relationToFollow" t-value="followRelations &amp;&amp; line.relation"/>
+        <li t-attf-class="o_field_selector_item #{relationToFollow and 'o_field_selector_next_page' or 'o_field_selector_select_button'}#{line_index == 0 and ' active' or ''}"
+            t-att-data-name="line.name">
+            <t t-esc="line.string"/>
+            <div t-if="debug" class="text-muted o_field_selector_item_title"><t t-esc="line.name"/> (<t t-esc="line.type"/>)</div>
+            <i t-if="relationToFollow" class="fa fa-chevron-right o_field_selector_relation_icon"/>
+        </li>
+    </t>
 </ul>
 
 <t t-name="web.datepicker">