provide implementation for relation set and relation field types

git-svn-id: svn://svn.cy55.de/Zope3/src/loops/trunk@3184 fd906abe-77d9-0310-91a1-e0d9ade77398

browser/configure.zcml

@@ -603,16 +603,14 @@
       for="loops.browser.node.NodeView
            zope.publisher.interfaces.browser.IBrowserRequest"
       factory="loops.browser.form.CreateConcept"
-      permission="zope.ManageContent"
-      />
+      permission="zope.ManageContent" />
 
   <zope:adapter
       name="edit_concept"
       for="loops.browser.node.NodeView
            zope.publisher.interfaces.browser.IBrowserRequest"
       factory="loops.browser.form.EditConcept"
-      permission="zope.ManageContent"
-      />
+      permission="zope.ManageContent" />
 
   <!-- inner HTML views -->
 

browser/form.py

@@ -1,5 +1,5 @@
 #
-#  Copyright (c) 2008 Helmut Merz helmutm@cy55.de
+#  Copyright (c) 2009 Helmut Merz helmutm@cy55.de
 #
 #  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
@@ -115,6 +115,7 @@ class ObjectForm(NodeView):
         renderers['input_html'] = self.template.macros['input_html']
         renderers['input_grid'] = grid_macros.macros['input_grid']
         renderers['input_relationset'] = relation_macros.macros['input_relationset']
+        renderers['input_relation'] = relation_macros.macros['input_relation']
         return renderers
 
     @Lazy
@@ -397,8 +398,7 @@ class CreateConceptPage(CreateConceptForm):
 
     @Lazy
     def nextUrl(self):
-        #return self.nodeView.getUrlForTarget(self.context)
-        return self.getUrlForTarget(self.context)
+        return self.getUrlForTarget(self.virtualTargetObject)
 
 
 class InnerForm(CreateObjectForm):

browser/form_macros.pt

@@ -189,8 +189,6 @@
 </metal:assignments>
 
 
-
-
 <metal:versioning define-macro="versioning"
                   tal:define="versionInfo view/versionInfo"
                   tal:condition="versionInfo">

browser/loops.js

@@ -147,11 +147,26 @@ function addRelation(fieldName) {
     valuesNode = dojo.byId(fieldName + '_values');
     widget = dijit.byId(fieldName + '_search');
     token = widget.getValue();
-    title = widget.getDisplayedValue();
-    ih = '<input type="checkbox" name="' + name + ':list" value="' + token + '" checked> <span>' + title + '</span>';
-    newNode = document.createElement('div');
-    newNode.innerHTML = ih;
-    valuesNode.appendChild(newNode);
+    if (token) {
+        title = widget.getDisplayedValue();
+        ih = '<div><input type="checkbox" name="' + fieldName + ':list" value="' + token + '" checked> <span>' + title + '</span></div>';
+        newNode = document.createElement('div');
+        newNode.innerHTML = ih;
+        valuesNode.appendChild(newNode);
+    }
+}
+
+function setRelation(fieldName) {
+    valuesNode = dojo.byId(fieldName + '_values');
+    widget = dijit.byId(fieldName + '_search');
+    token = widget.getValue();
+    if (token) {
+        title = widget.getDisplayedValue();
+        ih = '<div><input type="checkbox" name="' + fieldName + '" value="' + token + '" checked> <span>' + title + '</span></div>';
+        newNode = document.createElement('div');
+        newNode.innerHTML = ih;
+        valuesNode.replaceChild(newNode, valuesNode.firstChild);
+    }
 }
 
 function validate() {

common.py

@@ -387,6 +387,16 @@ class RelationSetProperty(object):
             return self
         return self.factory(inst, self.predicateName)
 
+    def __set__(self, inst, value):
+        rs = self.factory(inst, self.predicateName)
+        current = list(rs)
+        for c in current:
+            if c not in value:
+                rs.remove(c)
+        for v in value:
+            if v not in current:
+                rs.add(v)
+
 
 class ParentRelationSetProperty(RelationSetProperty):
 

configure.zcml

@@ -345,6 +345,8 @@
            name="grid" />
   <adapter factory="loops.schema.field.RelationSetFieldInstance"
            name="relationset" />
+  <adapter factory="loops.schema.field.RelationFieldInstance"
+           name="relation" />
 
   <adapter factory="cybertools.composer.schema.factory.SchemaFactory" />
   <adapter factory="loops.schema.factory.ResourceSchemaFactory" />

schema/base.py

@@ -24,13 +24,13 @@ $Id$
 
 from zope.component import adapts
 from zope.interface import Attribute, implements
-from zope.schema import Choice, List
-from zope.schema.interfaces import IChoice, IList
+from zope.schema import Field, List
+from zope.schema.interfaces import IField, IList
 
 from cybertools.composer.schema.interfaces import FieldType
 
 
-class IRelation(IChoice):
+class IRelation(IField):
     """ An object addressed via a single relation.
     """
 
@@ -50,11 +50,14 @@ class IRelationSet(IList):
                 'targets for the relations.')
 
 
-class Relation(Choice):
+class Relation(Field):
 
     implements(IRelation)
 
-    __typeInfo__ = ('relation',)
+    __typeInfo__ = ('relation',
+                    FieldType('relation', 'relation',
+                              u'A field representing a related object.',
+                              instanceName='relation'))
 
     def __init__(self, *args, **kw):
         self.target_types = kw.pop('target_types')

schema/field.py

@@ -28,9 +28,10 @@ from zope.interface import implements
 from zope.app.pagetemplate import ViewPageTemplateFile
 from zope.cachedescriptors.property import Lazy
 import zope.schema
+from zope.traversing.api import getName
 
 from cybertools.composer.schema.factory import createField
-from cybertools.composer.schema.field import ListFieldInstance
+from cybertools.composer.schema.field import FieldInstance, ListFieldInstance
 from cybertools.composer.schema.interfaces import IField, IFieldInstance
 from cybertools.composer.schema.interfaces import fieldTypes, undefined
 from cybertools.util.format import toStr, toUnicode
@@ -41,17 +42,7 @@ from loops import util
 relation_macros = ViewPageTemplateFile('relation_macros.pt')
 
 
-class RelationSetFieldInstance(ListFieldInstance):
-
-    def marshall(self, value):
-        return [dict(title=v.title, uid=util.getUidForObject(v.context))
-                for v in value]
-
-    def display(self, value):
-        return value
-
-    def unmarshall(self, value):
-        return value
+class BaseRelationFieldInstance(object):
 
     @Lazy
     def typesParams(self):
@@ -62,3 +53,40 @@ class RelationSetFieldInstance(ListFieldInstance):
         if result:
             return '?' + '&'.join(result)
         return ''
+
+    def getPresetTargets(self, view):
+        if view.adapted.__is_dummy__:
+            # only for object in creation
+            target = view.virtualTargetObject
+            if getName(target.conceptType) in self.context.target_types:
+                return [dict(title=target.title, uid=util.getUidForObject(target))]
+        return []
+
+
+class RelationSetFieldInstance(ListFieldInstance, BaseRelationFieldInstance):
+
+    def marshall(self, value):
+        return [dict(title=v.title, uid=util.getUidForObject(v.context))
+                for v in value]
+
+    def display(self, value):
+        return ' | '.join([v.title for v in value])
+
+    def unmarshall(self, value):
+        return [util.getObjectForUid(v) for v in value]
+
+
+class RelationFieldInstance(FieldInstance, BaseRelationFieldInstance):
+
+    def marshall(self, value):
+        if value:
+            return dict(title=value.title, uid=util.getUidForObject(value))
+
+    def display(self, value):
+        if value:
+            return value.title
+        return u''
+
+    def unmarshall(self, value):
+        return util.getObjectForUid(value)
+

schema/relation_macros.pt

@@ -17,6 +17,13 @@
                                value obj/uid" />
         <span tal:content="obj/title" />
       </div>
+      <div tal:repeat="obj python:
+                fieldInstance.getPresetTargets(view)">
+        <input type="checkbox" checked
+               tal:attributes="name string:$name:list;
+                               value obj/uid" />
+        <span tal:content="obj/title" />
+      </div>
     </div>
     <input dojoType="dijit.form.FilteringSelect"
            autoComplete="False" labelAttr="label"
@@ -27,5 +34,31 @@
 </metal:textline>
 
 
+<metal:textline define-macro="input_relation"
+                tal:define="fieldInstance field/getFieldInstance;
+                            types fieldInstance/typesParams">
+    <div dojoType="dojox.data.QueryReadStore" jsId="conceptSearch"
+         tal:attributes="url string:listConceptsForComboBox.js$types;
+                         jsId string:${name}_search_store" >
+    </div>
+    <div tal:define="obj data/?name"
+         tal:attributes="id string:${name}_values"><div>
+        <tal:block tal:condition="obj">
+          <input type="checkbox" checked
+                 tal:attributes="name string:$name;
+                               value obj/uid" />
+          <span tal:content="obj/title" />
+        </tal:block>
+      </div>
+    </div>
+    <input dojoType="dijit.form.FilteringSelect"
+           autoComplete="False" labelAttr="label"
+           tal:attributes="store string:${name}_search_store;
+                           name string:${name}_search;
+                           id string:${name}_search;
+                           onChange string:setRelation('$name')" />
+</metal:textline>
+
+
 </body>
 </html>