Add TopicFile.Id to Markup and TopicFiles to Viewpoint

Schemas/markup.xsd

@@ -124,6 +124,7 @@
  <xs:element name="Date" type="xs:dateTime" minOccurs="0"/>
  <!-- Reference (URL) of the file -->
  <xs:element name="Reference" type="NonEmptyOrBlankString" minOccurs="0"/>
+ <xs:element name="Id" type="NonEmptyOrBlankString"/>
  </xs:sequence>
  <xs:attributeGroup ref="FileAttributes"/>
  </xs:complexType>

Schemas/visinfo.xsd

@@ -7,6 +7,10 @@
  </xs:annotation>
  <xs:complexType>
  <xs:sequence>
+ <!-- If one or more TopicFile elements are present, then this means that the
+ viewpoint is only supposed to load the given file references. Otherwise, the files
+ to be loaded in the viewpoint are the same as the Files list in the parent topic.-->
+ <xs:element name="TopicFiles" type="TopicFiles" minOccurs="0"/>
  <!--
  Although plural, 'Components' is not a collection
  -->
@@ -106,6 +110,12 @@
  <xs:maxExclusive value="180"/>
  </xs:restriction>
  </xs:simpleType>
+ <xs:complexType name="TopicFiles">
+ <xs:element name="TopicFileId" type="TopicFileId" maxOccurs="unbounded"/>
+ </xs:complexType>
+ <xs:complexType name="TopicFileId">
+ <xs:attribute name="Id" type="NonEmptyOrBlankString" use="required"/>
+ </xs:complexType>
  <xs:complexType name="Components">
  <xs:sequence>
  <!-- Components with relevance to the viewpoint. They should be displayed highlighted or selected in a viewer -->