ItEr42S17CUGravacionModelosUnidadesTraballoItEr41S20: Disabling the templates tree when the template is a line.

When a child wants to be added, the OrderLineTemplate itself cannot be
turned into a container if it's the root.

navalplanner-webapp/src/main/java/org/navalplanner/web/templates/IOrderTemplatesModel.java

@@ -42,4 +42,6 @@ public interface IOrderTemplatesModel {
     void initEdit(OrderElementTemplate template);
 
     EntitiesTree<OrderElementTemplate> getTemplatesTreeModel();
+
+    boolean isTemplateTreeDisabled();
 }

navalplanner-webapp/src/main/java/org/navalplanner/web/templates/OrderTemplatesController.java

@@ -97,6 +97,10 @@ public class OrderTemplatesController extends GenericForwardComposer implements
         materialsComponent.getController().openWindow(model.getTemplate());
     }
 
+    public boolean isTemplateTreeDisabled() {
+        return model.isTemplateTreeDisabled();
+    }
+
     private void show(Component window) {
         Util.reloadBindings(window);
         getVisibility().showOnly(window);

navalplanner-webapp/src/main/java/org/navalplanner/web/templates/OrderTemplatesModel.java

@@ -107,4 +107,9 @@ public class OrderTemplatesModel implements IOrderTemplatesModel {
         return treeModel;
     }
 
+    @Override
+    public boolean isTemplateTreeDisabled() {
+        return template != null && template.isLeaf();
+    }
+
 }

navalplanner-webapp/src/main/webapp/templates/_edition.zul

@@ -25,7 +25,7 @@
     <tabbox>
         <tabs>
             <tab id="tabGeneralData" label="${i18n:_('General data')}" />
-            <tab label="${i18n:_('Template Tree')}" />
+            <tab label="${i18n:_('Template Tree')}" disabled="@{templateController.templateTreeDisabled}"/>
             <tab label="${i18n:_('Materials')}" />
         </tabs>
         <tabpanels>