eu.etaxonomy.taxeditor.editor/src/main/java/eu/etaxonomy/taxeditor/editor/view/descriptive/handler/DescriptionsMenuPropertyTester.java

   1 /**
   2  *
   3  */
   4 package eu.etaxonomy.taxeditor.editor.view.descriptive.handler;
   5
   6 import org.eclipse.core.expressions.PropertyTester;
   7 import org.eclipse.jface.viewers.IStructuredSelection;
   8
   9 import eu.etaxonomy.cdm.model.description.DescriptionBase;
  10 import eu.etaxonomy.cdm.model.description.DescriptionElementBase;
  11 import eu.etaxonomy.cdm.model.media.Media;
  12 import eu.etaxonomy.taxeditor.model.FeatureNodeContainer;
  13
  14 /**
  15  * Property tester used by the description tree menu.
  16  *
  17  * @author p.ciardelli
  18  * @author n.hoffmann
  19  * @version $Id: $
  20  */
  21 public class DescriptionsMenuPropertyTester extends PropertyTester {
  22
  23         private static final String MEDIA = "isMedia";
  24         private static final String FEATURE_NODE_CONTAINER = "isFeatureNodeContainer";
  25         private static final String DESCRIPTION = "isDescription";
  26         private static final String DESCRIPTION_ELEMENT = "isDescriptionElement";
  27         private static final String DELETABLE = "isDeletable";
  28
  29         /* (non-Javadoc)
  30          * @see org.eclipse.core.expressions.IPropertyTester#test(java.lang.Object, java.lang.String, java.lang.Object[], java.lang.Object)
  31          */
  32         /** {@inheritDoc} */
  33         public boolean test(Object receiver, String property, Object[] args,
  34                         Object expectedValue) {
  35
  36                 Object[] selectedElements = ((IStructuredSelection) receiver).toArray();
  37
  38                 if(selectedElements.length == 0){
  39                         // nothing selected so all tests should fail
  40                         return false;
  41                 }
  42
  43                 if(MEDIA.equals(property)){
  44                         return isMedia(selectedElements);
  45                 }
  46                 else if(FEATURE_NODE_CONTAINER.equals(property)){
  47                         return isFeatureNodeContainer(selectedElements);
  48                 }
  49                 else if(DESCRIPTION.equals(property)){
  50                         return isDescription(selectedElements);
  51                 }
  52                 else if(DESCRIPTION_ELEMENT.equals(property)){
  53                         return isDescriptionElement(selectedElements);
  54                 }
  55                 else if(DELETABLE.equals(property)){
  56                         return isDeletable(selectedElements);
  57                 }
  58                 else{
  59                         return false;
  60                 }
  61         }
  62
  63         private boolean isFeatureNodeContainer(Object[] selectedElements) {
  64                 for (Object object : selectedElements){
  65                         if(!(object instanceof FeatureNodeContainer)){
  66                                 return false;
  67                         }
  68                 }
  69                 return true;
  70         }
  71
  72         private boolean isDeletable(Object[] selectedElements) {
  73                 boolean result = false;
  74
  75                 for (Object object : selectedElements) {
  76
  77                         if((object instanceof DescriptionBase)
  78                                 || (object instanceof DescriptionElementBase)
  79                                 || (object instanceof Media)
  80                                 || (object instanceof FeatureNodeContainer)){
  81                                 result = true;
  82                         }else{
  83                                 return false;
  84                         }
  85
  86                 }
  87                 return result;
  88         }
  89
  90         private boolean isDescriptionElement(Object[] selectedElements) {
  91                 for (Object object : selectedElements){
  92                         if(!(object instanceof DescriptionElementBase)){
  93                                 return false;
  94                         }
  95                 }
  96                 return true;
  97         }
  98
  99         private boolean isDescription(Object[] selectedElements) {
 100                 for (Object object : selectedElements){
 101                         if(!(object instanceof DescriptionBase)){
 102                                 return false;
 103                         }
 104                 }
 105                 return true;
 106         }
 107
 108         private boolean isMedia(Object[] selectedElements) {
 109                 for (Object object : selectedElements){
 110                         if(!(object instanceof Media)){
 111                                 return false;
 112                         }
 113                 }
 114                 return true;
 115         }
 116 }