Use advanced search modal in related docs edit widget

src/pfwbged/collection/configure.zcml

@@ -72,6 +72,8 @@
         for="Products.CMFPlone.interfaces.IPloneSiteRoot"
         />
 
+  <adapter factory=".widget.PFWBRelatedDocsFieldWidget" />
+
 <!--
   <browser:page
       name="pfwbgedcollection.view"

src/pfwbged/collection/locales/fr/LC_MESSAGES/pfwbged.collection.po

@@ -14,6 +14,10 @@ msgstr ""
 "Preferred-Encodings: utf-8 latin1\n"
 "Domain: pfwbged.collection\n"
 
+#: ../widget.py:55
+msgid "Add"
+msgstr "Ajouter"
+
 #: ../portlet.py:170
 msgid "Add Collection Portlet"
 msgstr "Ajouter un portlet de collection"

src/pfwbged/collection/locales/pfwbged.collection.pot

@@ -17,6 +17,10 @@ msgstr ""
 "Preferred-Encodings: utf-8 latin1\n"
 "Domain: pfwbged.collection\n"
 
+#: ../widget.py:55
+msgid "Add"
+msgstr ""
+
 #: ../portlet.py:170
 msgid "Add Collection Portlet"
 msgstr ""

src/pfwbged/collection/widget.py

@@ -0,0 +1,55 @@
+# -*- coding: utf8 -*-
+from collective.dms.basecontent.relateddocs import IRelatedDocs
+from collective.dms.basecontent.relateddocs import RelatedDocsWidget
+from pfwbged.collection import _
+from pfwbged.policy.interfaces import IPfwbgedPolicyLayer
+from plone import api
+from z3c.form.interfaces import IFieldWidget
+from z3c.form.widget import FieldWidget
+from zope.component import adapter
+from zope.i18n import translate
+from zope.interface import implementer
+
+
+@adapter(IRelatedDocs, IPfwbgedPolicyLayer)
+@implementer(IFieldWidget)
+def PFWBRelatedDocsFieldWidget(field, request):
+    return FieldWidget(field, PFWBRelatedDocsWidget(field.display_backrefs, request))
+
+
+class PFWBRelatedDocsWidget(RelatedDocsWidget):
+
+    def js_extra(self):
+        return """\
+                $('#%(id)s-widgets-query').each(function() {
+                    if($(this).siblings('a.pfwbSearchButton').length > 0) { return; }
+                    
+                    $(document.createElement('a'))
+                        .attr({
+                            'href': '%(search_url)s'
+                        })
+                        .html('%(anchor_text)s')
+                        .addClass('pfwbSearchButton')
+                        .prepOverlay({
+                            subtype: 'iframe',
+                            config: {
+                                onBeforeClose : function (e) {
+                                    var selectedRows = this.getOverlay().find("iframe").contents().find("tr.selected");
+                                    var input_box = $('#%(id)s-widgets-query');
+                                    selectedRows.each(function(index, row) {
+                                        var path = $(row).find(".colour-column input").data("value");
+                                        var title = $(row).find(".title-column a").html();
+                                        formwidget_autocomplete_new_value(input_box, path, title);
+                                    });
+                                    return true;
+                                }
+                            }
+                        })
+                        .insertAfter($(this));
+                        
+                    $(this).after(" ");
+                });
+                        
+        """ % dict(search_url=api.portal.get().absolute_url() + '/pfwbsearch?iframe',
+                   id=self.name.replace('.', '-'),
+                   anchor_text=translate(_(u'Add'), context=self.request))