. First part of the Clipboard UI refactoring ready for AVM node support

- Clipboard actions now based on NodeRef not "id"
 - Added notion of "workspace" and "AVM" specific clipboard items
 - Clipboard bean supports creating different ClipboardItem types (workspace or avm)
. ActionLink parameters are now "toString()"ed rather than assumed String
. Optimization to Portal Tree Navigator support

git-svn-id: https://svn.alfresco.com/repos/alfresco-enterprise/alfresco/HEAD/root@4924 c4b6b30b-aa2e-2d43-bbcb-ca4b014f7261

source/java/org/alfresco/web/bean/clipboard/AbstractClipboardItem.java

@@ -0,0 +1,129 @@
+/*
+ * 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.clipboard;
+
+import javax.faces.context.FacesContext;
+
+import org.alfresco.model.ApplicationModel;
+import org.alfresco.model.ContentModel;
+import org.alfresco.service.cmr.repository.NodeRef;
+import org.alfresco.service.cmr.repository.NodeService;
+import org.alfresco.service.namespace.QName;
+import org.alfresco.web.bean.repository.Node;
+import org.alfresco.web.bean.repository.Repository;
+
+/**
+ * Base class representing a single item added to the clipboard. 
+ * 
+ * @author Kevin Roast
+ */
+abstract class AbstractClipboardItem implements ClipboardItem
+{
+   /**
+    * Constructor
+    * 
+    * @param ref        The ref of the item on the clipboard
+    * @param mode       The ClipboardStatus enum value
+    */
+   public AbstractClipboardItem(NodeRef ref, ClipboardStatus mode)
+   {
+      this.ref = ref;
+      this.mode = mode;
+   }
+   
+   public ClipboardStatus getMode()
+   {
+      return this.mode;
+   }
+   
+   public String getName()
+   {
+      if (this.name == null)
+      {
+         this.name = (String)getNodeService().getProperty(this.ref, ContentModel.PROP_NAME);
+      }
+      return this.name;
+   }
+   
+   public QName getType()
+   {
+      if (this.type == null)
+      {
+         this.type = getNodeService().getType(this.ref);
+      }
+      return this.type;
+   }
+   
+   public String getIcon()
+   {
+      if (this.icon == null)
+      {
+         this.icon = (String)getNodeService().getProperty(this.ref, ApplicationModel.PROP_ICON);
+      }
+      return this.icon;
+   }
+   
+   public String getId()
+   {
+      return this.ref.getId();
+   }
+   
+   public NodeRef getNodeRef()
+   {
+      return this.ref;
+   }
+   
+   /**
+    * Override equals() to compare NodeRefs
+    */
+   public boolean equals(Object obj)
+   {
+      if (obj == this)
+      {
+         return true;
+      }
+      if (obj instanceof ClipboardItem)
+      {
+         return ((ClipboardItem)obj).getNodeRef().equals(this.ref);
+      }
+      else
+      {
+         return false;
+      }
+   }
+   
+   /**
+    * Override hashCode() to use the internal NodeRef hashcode instead
+    */
+   public int hashCode()
+   {
+      return ref.hashCode();
+   }
+   
+   protected static NodeService getNodeService()
+   {
+      return Repository.getServiceRegistry(FacesContext.getCurrentInstance()).getNodeService();
+   }
+   
+   protected NodeRef ref;
+   protected ClipboardStatus mode;
+   
+   // cached values
+   private String name;
+   private QName type;
+   private String icon;
+}