Moving to root below branch label

git-svn-id: https://svn.alfresco.com/repos/alfresco-enterprise/alfresco/HEAD/root@2005 c4b6b30b-aa2e-2d43-bbcb-ca4b014f7261

source/java/org/alfresco/web/bean/preview/BasePreviewBean.java

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+/*
+ * Copyright (C) 2005 Alfresco, Inc.
+ *
+ * Licensed under the Mozilla Public License version 1.1 
+ * with a permitted attribution clause. You may obtain a
+ * copy of the License at
+ *
+ *   http://www.alfresco.org/legal/license.txt
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND,
+ * either express or implied. See the License for the specific
+ * language governing permissions and limitations under the
+ * License.
+ */
+package org.alfresco.web.bean.preview;
+
+import java.util.ArrayList;
+import java.util.HashMap;
+import java.util.List;
+import java.util.Map;
+
+import javax.faces.context.FacesContext;
+import javax.faces.event.ActionEvent;
+import javax.faces.model.SelectItem;
+
+import org.alfresco.model.ContentModel;
+import org.alfresco.service.cmr.dictionary.DictionaryService;
+import org.alfresco.service.cmr.repository.NodeRef;
+import org.alfresco.service.cmr.repository.NodeService;
+import org.alfresco.service.cmr.repository.TemplateImageResolver;
+import org.alfresco.service.cmr.repository.TemplateNode;
+import org.alfresco.service.cmr.search.SearchService;
+import org.alfresco.service.namespace.NamespaceService;
+import org.alfresco.service.namespace.QName;
+import org.alfresco.web.app.Application;
+import org.alfresco.web.bean.BrowseBean;
+import org.alfresco.web.bean.NavigationBean;
+import org.alfresco.web.bean.repository.Node;
+import org.alfresco.web.bean.repository.Repository;
+import org.alfresco.web.data.IDataContainer;
+import org.alfresco.web.data.QuickSort;
+import org.alfresco.web.ui.common.Utils;
+import org.alfresco.web.ui.common.component.UIActionLink;
+
+/**
+ * Backing bean for the Preview Document in Template action page
+ * 
+ * @author Kevin Roast
+ */
+public abstract class BasePreviewBean
+{
+   private static final String NO_SELECTION = "none";
+
+   /** BrowseBean instance */
+   protected BrowseBean browseBean;
+   
+   /** NodeService instance */
+   protected NodeService nodeService;
+   
+   /** The SearchService instance */
+   protected SearchService searchService;
+   
+   /** The NavigationBean bean reference */
+   protected NavigationBean navigator;
+   
+   protected NodeRef template;
+   
+   
+   /**
+    * @param nodeService The nodeService to set.
+    */
+   public void setNodeService(NodeService nodeService)
+   {
+      this.nodeService = nodeService;
+   }
+
+   /**
+    * @param browseBean The BrowseBean to set.
+    */
+   public void setBrowseBean(BrowseBean browseBean)
+   {
+      this.browseBean = browseBean;
+   }
+   
+   /**
+    * @param searchService The searchService to set.
+    */
+   public void setSearchService(SearchService searchService)
+   {
+      this.searchService = searchService;
+   }
+   
+   /**
+    * @param navigator The NavigationBean to set.
+    */
+   public void setNavigator(NavigationBean navigator)
+   {
+      this.navigator = navigator;
+   }
+   
+   /**
+    * Returns the node this bean is currently working with
+    * 
+    * @return The current Node
+    */
+   public abstract Node getNode();
+   
+   /**
+    * Returns the id of the current node
+    * 
+    * @return The id
+    */
+   public String getId()
+   {
+      return getNode().getId();
+   }
+   
+   /**
+    * Returns the name of the current node
+    * 
+    * @return Name of the current node
+    */
+   public String getName()
+   {
+      return getNode().getName();
+   }
+   
+   /**
+    * @return the list of available Content Templates that can be applied to the current document.
+    */
+   public SelectItem[] getTemplates()
+   {
+      // TODO: could cache this last for say 1 minute before requerying
+      
+      // get the template from the special Content Templates folder
+      FacesContext context = FacesContext.getCurrentInstance();
+      String xpath = Application.getRootPath(context) + "/" + 
+            Application.getGlossaryFolderName(context) + "/" +
+            Application.getContentTemplatesFolderName(context) + "//*";
+      NodeRef rootNodeRef = this.nodeService.getRootNode(Repository.getStoreRef());
+      NamespaceService resolver = Repository.getServiceRegistry(context).getNamespaceService();
+      List<NodeRef> results = this.searchService.selectNodes(rootNodeRef, xpath, null, resolver, false);
+      
+      List<SelectItem> templates = new ArrayList<SelectItem>(results.size());
+      if (results.size() != 0)
+      {
+         DictionaryService dd = Repository.getServiceRegistry(context).getDictionaryService();
+         for (NodeRef ref : results)
+         {
+            Node childNode = new Node(ref);
+            if (dd.isSubClass(childNode.getType(), ContentModel.TYPE_CONTENT))
+            {
+               templates.add(new SelectItem(childNode.getId(), childNode.getName()));
+            }
+         }
+         
+         // make sure the list is sorted by the label
+         QuickSort sorter = new QuickSort(templates, "label", true, IDataContainer.SORT_CASEINSENSITIVE);
+         sorter.sort();
+      }
+      
+      // add an entry (at the start) to instruct the user to select a template
+      templates.add(0, new SelectItem(NO_SELECTION, Application.getMessage(FacesContext.getCurrentInstance(), "select_a_template")));
+      
+      return templates.toArray(new SelectItem[templates.size()]);
+   }
+   
+   /**
+    * Returns a model for use by the template on the Preview page.
+    * 
+    * @return model containing current document/space info.
+    */
+   public abstract Map getTemplateModel();
+   
+   /** Template Image resolver helper */
+   protected TemplateImageResolver imageResolver = new TemplateImageResolver()
+   {
+       public String resolveImagePathForName(String filename, boolean small)
+       {
+           return Utils.getFileTypeImage(filename, small);
+       }
+   };
+
+   /**
+    * @return the current template as a full NodeRef
+    */
+   public NodeRef getTemplateRef()
+   {
+      return this.template;
+   }
+   
+   /**
+    * @return Returns the template Id.
+    */
+   public String getTemplate()
+   {
+      return (this.template != null ? this.template.getId() : null);
+   }
+
+   /**
+    * @param template The template Id to set.
+    */
+   public void setTemplate(String template)
+   {
+      if (template != null && template.equals(NO_SELECTION) == false)
+      {
+         this.template = new NodeRef(Repository.getStoreRef(), template);
+      }
+   }
+   
+   private int findNextPreviewNode(List<Node> nodes, int start)
+   {
+      // search from start to end of list
+      for (int i=start; i<nodes.size(); i++)
+      {
+         Node next = nodes.get(i);
+         if (next.hasAspect(ContentModel.ASPECT_TEMPLATABLE))
+         {
+            return i;
+         }
+      }
+      // search from zero index to start - 1 (to skip original node)
+      for (int i=0; i<start - 1; i++)
+      {
+         Node next = nodes.get(i);
+         if (next.hasAspect(ContentModel.ASPECT_TEMPLATABLE))
+         {
+            return i;
+         }
+      }
+      return -1;
+   }
+   
+   private int findPrevPreviewNode(List<Node> nodes, int start)
+   {
+      // search from start to beginning of list
+      for (int i=start; i>=0; i--)
+      {
+         Node next = nodes.get(i);
+         if (next.hasAspect(ContentModel.ASPECT_TEMPLATABLE))
+         {
+            return i;
+         }
+      }
+      // end of list to start + 1 (to skip original node)
+      for (int i=nodes.size() - 1; i>start; i--)
+      {
+         Node next = nodes.get(i);
+         if (next.hasAspect(ContentModel.ASPECT_TEMPLATABLE))
+         {
+            return i;
+         }
+      }
+      return -1;
+   }
+}