Several bugfixes for models

ccm-cms/src/main/java/org/librecms/pages/models/BreadcrumbData.java

@@ -28,6 +28,8 @@ public class BreadcrumbData {
 
     private String path;
 
+    private String link;
+
     public String getTitle() {
         return title;
     }
@@ -44,4 +46,12 @@ public class BreadcrumbData {
         this.path = path;
     }
 
+    public String getLink() {
+        return link;
+    }
+
+    public void setLink(final String link) {
+        this.link = link;
+    }
+
 }

ccm-cms/src/main/java/org/librecms/pages/models/CategoryModel.java

@@ -24,7 +24,6 @@ import org.libreccm.categorization.Domain;
 import org.libreccm.categorization.DomainRepository;
 import org.libreccm.l10n.GlobalizationHelper;
 import org.librecms.contentsection.ContentItemVersion;
-import org.librecms.pages.PagesService;
 
 import java.io.Serializable;
 import java.util.Collections;

ccm-cms/src/main/java/org/librecms/pages/models/ContentItemModel.java

@@ -170,6 +170,17 @@ public class ContentItemModel {
         return contentItem.isPresent();
     }
 
+//    /**
+//     * A convient getter for checking if a content item is available from a
+//     * template.
+//     *
+//     * @return {@code true} if an item is available, {@code false} if not.
+//     */
+//    @Transactional(Transactional.TxType.REQUIRED)
+//    public boolean getItemAvailable() {
+//        init();
+//        return contentItem.isPresent();
+//    }
     /**
      * Gets the {@code objectId)} (see {@link CcmObject#objectId} of the current
      * item.
@@ -422,6 +433,11 @@ public class ContentItemModel {
      */
     @Transactional(Transactional.TxType.REQUIRED)
     private Optional<ContentItem> retrieveContentItem() {
+        if (categoryModel.getCategory() == null) {
+            // For none-category pages, for example login
+            return Optional.empty();
+        }
+        
         final Optional<ContentItem> item;
         if (itemName == null || "index".equals(itemName)) {
             item = pagesService.findIndexItem(

ccm-cms/src/main/java/org/librecms/pages/models/ItemListModel.java

@@ -186,12 +186,14 @@ public class ItemListModel {
     public List<? extends AbstractContentItemListItemModel> getItems(
         final String listName
     ) {
-        final List<? extends AbstractContentItemListItemModel> items 
-            = Collections.unmodifiableList(
-            buildList(
-                buildLimitToType(getLimitToTypeSetting(listName)),
-                collectCategories(
-                    categoryRepository
+        // If no category is available, for example in the login application
+        if (categoryModel.getCategory() == null) {
+            return Collections.emptyList();
+        }
+
+        final Class<? extends ContentItem> limitToType = buildLimitToType(
+            getLimitToTypeSetting(listName));
+        final Category currentCategory = categoryRepository
             .findById(categoryModel.getCategory().getCategoryId())
             .orElseThrow(
                 () -> new RuntimeException(
@@ -202,11 +204,20 @@ public class ItemListModel {
                         categoryModel.getCategory().getCategoryId()
                     )
                 )
-                        )
-                ),
-                getListOrderSetting(listName),
-                getPageSizeSetting(listName),
-                getOffset(listName, getPageSizeSetting(listName))
+            );
+        final List<Category> categories = collectCategories(currentCategory);
+        final List<String> listOrder = getListOrderSetting(listName);
+        final int pageSize = getPageSizeSetting(listName);
+        final int offset = getOffset(listName, getPageSizeSetting(listName));
+
+        final List<? extends AbstractContentItemListItemModel> items
+            = Collections.unmodifiableList(
+                buildList(
+                    limitToType,
+                    categories,
+                    listOrder,
+                    pageSize,
+                    offset
                 )
             );
 

ccm-cms/src/main/java/org/librecms/pages/models/PagePropertiesModel.java

@@ -21,6 +21,7 @@ package org.librecms.pages.models;
 import java.util.Collections;
 import java.util.HashMap;
 import java.util.Map;
+import java.util.Optional;
 
 import javax.enterprise.context.RequestScoped;
 import javax.inject.Named;
@@ -36,7 +37,10 @@ public class PagePropertiesModel {
     private Map<String, String> properties;
     
     public Map<String, String> getProperties() {
-        return Collections.unmodifiableMap(properties);
+        return Optional
+            .ofNullable(properties)
+            .map(Collections::unmodifiableMap)
+            .orElse(Collections.emptyMap());
     }
     
     public void setProperties(final Map<String, String> properties) {

ccm-cms/src/main/java/org/librecms/pages/models/PageUrlModel.java

@@ -251,6 +251,7 @@ public class PageUrlModel {
             final BreadcrumbData breadcrumb = new BreadcrumbData();
             breadcrumb.setPath(selected.get().getCategoryPath());
             breadcrumb.setTitle(selected.get().getTitle());
+            breadcrumb.setLink(selected.get().getCategoryLink());
 
             buildBreadcrumbs(selected.get(), breadcrumbs);
         }