Experimental API to filter maven index entries3.7-M7

Introduced IArtifactFilter interface and corresponding artifactFilters
extension point that allows filtering of maven index entries. Updated
code-assist and artifact selection GUI to ignore/block filtered
entries.

Enabled decoration of maven index entries in Maven Repositories view
and Add Depenencies dialog, so filtered entries can appear visually
differently. Actual decoration is left up to artifact filter provider
bundle.

Signed-off-by: Igor Fedorenko <igor@ifedorenko.com>

8 files changed, 148 insertions, 91 deletions

diff --git a/org.eclipse.m2e.core.ui/plugin.xml b/org.eclipse.m2e.core.ui/plugin.xml
index 8b54e497..06f215a1 100644
--- a/org.eclipse.m2e.core.ui/plugin.xml
+++ b/org.eclipse.m2e.core.ui/plugin.xml
@@ -29,10 +29,7 @@
            state="true">
        <description>%m2.decorator.description</description>
        <enablement>
-          <or>
-            <objectState name="nature" value="org.eclipse.m2e.core.maven2Nature"/>
-            <!--objectState name="name" value="pom.xml"/-->
-          </or>
+         <objectState name="nature" value="org.eclipse.m2e.core.maven2Nature"/>
        </enablement>
      </decorator>
 
@@ -44,10 +41,7 @@
                 state="false">
        <description>%m2.decorator.version.description</description>
        <enablement>
-          <or>
-            <objectState name="nature" value="org.eclipse.m2e.core.maven2Nature"/>
-            <!--objectState name="name" value="pom.xml"/-->
-          </or>
+         <objectState name="nature" value="org.eclipse.m2e.core.maven2Nature"/>
        </enablement>
      </decorator>
    </extension>
@@ -550,4 +544,17 @@
             file="helpContext.xml">
       </contexts>
    </extension>
-</plugin>
\ No newline at end of file
+   <extension
+         point="org.eclipse.core.runtime.adapters">
+      <factory
+            adaptableType="org.eclipse.m2e.core.ui.internal.views.nodes.IndexedArtifactFileNode"
+            class="org.eclipse.m2e.core.ui.internal.views.nodes.IndexedArtifactFileNode$AdapterFactory">
+         <adapter
+               type="org.eclipse.m2e.core.internal.index.IndexedArtifactFile">
+         </adapter>
+         <adapter
+               type="org.eclipse.m2e.core.embedder.ArtifactKey">
+         </adapter>
+      </factory>
+   </extension>
+</plugin>
diff --git a/org.eclipse.m2e.core.ui/src/org/eclipse/m2e/core/ui/internal/M2EUIPluginActivator.java b/org.eclipse.m2e.core.ui/src/org/eclipse/m2e/core/ui/internal/M2EUIPluginActivator.java
index 37e3411e..3118f996 100644
--- a/org.eclipse.m2e.core.ui/src/org/eclipse/m2e/core/ui/internal/M2EUIPluginActivator.java
+++ b/org.eclipse.m2e.core.ui/src/org/eclipse/m2e/core/ui/internal/M2EUIPluginActivator.java
@@ -26,6 +26,7 @@ import org.eclipse.ui.preferences.ScopedPreferenceStore;
 
 import org.eclipse.m2e.core.MavenPlugin;
 import org.eclipse.m2e.core.internal.IMavenConstants;
+import org.eclipse.m2e.core.internal.index.filter.FilteredIndex;
 import org.eclipse.m2e.core.internal.lifecyclemapping.discovery.IMavenDiscovery;
 import org.eclipse.m2e.core.ui.internal.console.MavenConsoleImpl;
 import org.eclipse.m2e.core.ui.internal.search.util.IndexSearchEngine;
@@ -105,7 +106,7 @@ public class M2EUIPluginActivator extends AbstractUIPlugin {
   }
 
   public SearchEngine getSearchEngine(IProject project) throws CoreException {
-    return new IndexSearchEngine(MavenPlugin.getIndexManager().getIndex(project));
+    return new IndexSearchEngine(new FilteredIndex(project, MavenPlugin.getIndexManager().getIndex(project)));
   }
 
   @SuppressWarnings({"rawtypes", "unchecked"})
diff --git a/org.eclipse.m2e.core.ui/src/org/eclipse/m2e/core/ui/internal/dialogs/MavenRepositorySearchDialog.java b/org.eclipse.m2e.core.ui/src/org/eclipse/m2e/core/ui/internal/dialogs/MavenRepositorySearchDialog.java
index cc503bb0..5f5b65f8 100644
--- a/org.eclipse.m2e.core.ui/src/org/eclipse/m2e/core/ui/internal/dialogs/MavenRepositorySearchDialog.java
+++ b/org.eclipse.m2e.core.ui/src/org/eclipse/m2e/core/ui/internal/dialogs/MavenRepositorySearchDialog.java
@@ -222,7 +222,7 @@ public class MavenRepositorySearchDialog extends AbstractMavenDialog {
     }
     
     pomSelectionComponent = new MavenPomSelectionComponent(composite, SWT.NONE);
-    pomSelectionComponent.init(queryText, queryType, artifacts, managed);
+    pomSelectionComponent.init(queryText, queryType, project, artifacts, managed);
     
     pomSelectionComponent.setLayoutData(new GridData(SWT.FILL, SWT.FILL, true, true));
     
diff --git a/org.eclipse.m2e.core.ui/src/org/eclipse/m2e/core/ui/internal/views/MavenRepositoryView.java b/org.eclipse.m2e.core.ui/src/org/eclipse/m2e/core/ui/internal/views/MavenRepositoryView.java
index e47b790e..36a0471c 100644
--- a/org.eclipse.m2e.core.ui/src/org/eclipse/m2e/core/ui/internal/views/MavenRepositoryView.java
+++ b/org.eclipse.m2e.core.ui/src/org/eclipse/m2e/core/ui/internal/views/MavenRepositoryView.java
@@ -32,6 +32,7 @@ import org.eclipse.jface.action.IToolBarManager;
 import org.eclipse.jface.action.MenuManager;
 import org.eclipse.jface.action.Separator;
 import org.eclipse.jface.dialogs.MessageDialog;
+import org.eclipse.jface.viewers.DecoratingStyledCellLabelProvider;
 import org.eclipse.jface.viewers.DoubleClickEvent;
 import org.eclipse.jface.viewers.IDoubleClickListener;
 import org.eclipse.jface.viewers.ISelection;
@@ -80,6 +81,7 @@ import org.eclipse.m2e.core.ui.internal.views.nodes.RepositoryNode;
  * 
  * @author dyocum
  */
+@SuppressWarnings("restriction")
 public class MavenRepositoryView extends ViewPart {
 
   /**
@@ -137,8 +139,11 @@ public class MavenRepositoryView extends ViewPart {
     viewer = new TreeViewer(parent, SWT.MULTI | SWT.H_SCROLL | SWT.V_SCROLL);
     contentProvider = new RepositoryViewContentProvider();
     viewer.setContentProvider(contentProvider);
-    viewer.setLabelProvider(new RepositoryViewLabelProvider(viewer.getTree().getFont()));
-    
+
+    RepositoryViewLabelProvider labelProvider = new RepositoryViewLabelProvider(viewer.getTree().getFont());
+    viewer.setLabelProvider(new DecoratingStyledCellLabelProvider(labelProvider, PlatformUI.getWorkbench()
+        .getDecoratorManager().getLabelDecorator(), null));
+
     viewer.addDoubleClickListener(new IDoubleClickListener() {
       public void doubleClick(DoubleClickEvent event) {
         
diff --git a/org.eclipse.m2e.core.ui/src/org/eclipse/m2e/core/ui/internal/views/RepositoryViewLabelProvider.java b/org.eclipse.m2e.core.ui/src/org/eclipse/m2e/core/ui/internal/views/RepositoryViewLabelProvider.java
index f65adaf6..e83707bf 100644
--- a/org.eclipse.m2e.core.ui/src/org/eclipse/m2e/core/ui/internal/views/RepositoryViewLabelProvider.java
+++ b/org.eclipse.m2e.core.ui/src/org/eclipse/m2e/core/ui/internal/views/RepositoryViewLabelProvider.java
@@ -11,9 +11,12 @@
 
 package org.eclipse.m2e.core.ui.internal.views;
 
+import org.eclipse.jface.viewers.DelegatingStyledCellLabelProvider.IStyledLabelProvider;
 import org.eclipse.jface.viewers.IColorProvider;
 import org.eclipse.jface.viewers.IFontProvider;
 import org.eclipse.jface.viewers.LabelProvider;
+import org.eclipse.jface.viewers.StyledString;
+
 import org.eclipse.m2e.core.ui.internal.util.M2EUIUtils;
 import org.eclipse.m2e.core.ui.internal.views.nodes.IMavenRepositoryNode;
 import org.eclipse.m2e.core.ui.internal.views.nodes.RepositoryNode;
@@ -31,7 +34,7 @@ import org.eclipse.ui.PlatformUI;
  *
  * @author dyocum
  */
-public class RepositoryViewLabelProvider extends LabelProvider implements IColorProvider, IFontProvider {
+public class RepositoryViewLabelProvider extends LabelProvider implements IStyledLabelProvider, IColorProvider, IFontProvider {
 
   private Font italicFont;
   public RepositoryViewLabelProvider(Font treeFont){
@@ -93,4 +96,8 @@ public class RepositoryViewLabelProvider extends LabelProvider implements IColor
     return null;
   }
 
+  public StyledString getStyledText(Object element) {
+    return new StyledString(getText(element));
+  }
+
 }
diff --git a/org.eclipse.m2e.core.ui/src/org/eclipse/m2e/core/ui/internal/views/nodes/IndexedArtifactFileNode.java b/org.eclipse.m2e.core.ui/src/org/eclipse/m2e/core/ui/internal/views/nodes/IndexedArtifactFileNode.java
index 95a0c3f6..2dcc4eec 100644
--- a/org.eclipse.m2e.core.ui/src/org/eclipse/m2e/core/ui/internal/views/nodes/IndexedArtifactFileNode.java
+++ b/org.eclipse.m2e.core.ui/src/org/eclipse/m2e/core/ui/internal/views/nodes/IndexedArtifactFileNode.java
@@ -12,40 +12,39 @@
 package org.eclipse.m2e.core.ui.internal.views.nodes;
 
 import org.eclipse.core.runtime.IAdaptable;
+import org.eclipse.core.runtime.IAdapterFactory;
+import org.eclipse.core.runtime.PlatformObject;
+import org.eclipse.swt.graphics.Image;
+
 import org.eclipse.m2e.core.embedder.ArtifactKey;
 import org.eclipse.m2e.core.internal.index.IIndex;
 import org.eclipse.m2e.core.internal.index.IndexedArtifactFile;
 import org.eclipse.m2e.core.internal.index.nexus.NexusIndexManager;
 import org.eclipse.m2e.core.ui.internal.MavenImages;
-import org.eclipse.swt.graphics.Image;
+
 
 /**
  * IndexedArtifactFileNode
- *
+ * 
  * @author dyocum
  */
-public class IndexedArtifactFileNode implements IMavenRepositoryNode, IArtifactNode, IAdaptable {
+@SuppressWarnings("restriction")
+public class IndexedArtifactFileNode extends PlatformObject implements IMavenRepositoryNode, IArtifactNode, IAdaptable {
 
   private IndexedArtifactFile artifactFile;
 
-  public IndexedArtifactFileNode(IndexedArtifactFile artifactFile){
+  public IndexedArtifactFileNode(IndexedArtifactFile artifactFile) {
     this.artifactFile = artifactFile;
   }
-  
-  public IndexedArtifactFile getIndexedArtifactFile(){
+
+  public IndexedArtifactFile getIndexedArtifactFile() {
     return this.artifactFile;
   }
-  
-  /* (non-Javadoc)
-   * @see org.eclipse.m2e.ui.internal.views.IMavenRepositoryNode#getChildren()
-   */
+
   public Object[] getChildren() {
     return null;
   }
 
-  /* (non-Javadoc)
-   * @see org.eclipse.m2e.ui.internal.views.IMavenRepositoryNode#getName()
-   */
   public String getName() {
     String label = artifactFile.artifact;
     if(artifactFile.classifier != null) {
@@ -57,16 +56,10 @@ public class IndexedArtifactFileNode implements IMavenRepositoryNode, IArtifactN
     return label;
   }
 
-  /* (non-Javadoc)
-   * @see org.eclipse.m2e.ui.internal.views.IMavenRepositoryNode#hasChildren()
-   */
   public boolean hasChildren() {
     return false;
   }
 
-  /* (non-Javadoc)
-   * @see org.eclipse.m2e.ui.internal.views.nodes.IMavenRepositoryNode#getImage()
-   */
   public Image getImage() {
     if(artifactFile.sourcesExists == IIndex.PRESENT) {
       return MavenImages.IMG_VERSION_SRC;
@@ -75,28 +68,36 @@ public class IndexedArtifactFileNode implements IMavenRepositoryNode, IArtifactN
 
   }
 
-  /* (non-Javadoc)
-   * @see org.eclipse.m2e.ui.internal.views.nodes.IArtifactNode#getDocumentKey()
-   */
   public String getDocumentKey() {
     return NexusIndexManager.getDocumentKey(artifactFile.getArtifactKey());
   }
 
-  /* (non-Javadoc)
-   * @see org.eclipse.m2e.ui.internal.views.nodes.IMavenRepositoryNode#isUpdating()
-   */
   public boolean isUpdating() {
     return false;
   }
 
-  /* (non-Javadoc)
-   * @see org.eclipse.core.runtime.IAdaptable#getAdapter(java.lang.Class)
-   */
-  public Object getAdapter(Class adapter) {
-    if (ArtifactKey.class.equals(adapter)) {
-      return new ArtifactKey(artifactFile.group, artifactFile.artifact, artifactFile.version, artifactFile.classifier);
+  @SuppressWarnings("rawtypes")
+  public static class AdapterFactory implements IAdapterFactory {
+
+    private static final Class[] ADAPTERS = new Class[] {ArtifactKey.class, IndexedArtifactFile.class};
+
+    public Object getAdapter(Object adaptableObject, Class adapterType) {
+      if(adaptableObject instanceof IndexedArtifactFileNode) {
+        IndexedArtifactFileNode node = (IndexedArtifactFileNode) adaptableObject;
+        IndexedArtifactFile artifactFile = node.artifactFile;
+        if(ArtifactKey.class.equals(adapterType)) {
+          return new ArtifactKey(artifactFile.group, artifactFile.artifact, artifactFile.version,
+              artifactFile.classifier);
+        } else if(IndexedArtifactFile.class.equals(adapterType)) {
+          return artifactFile;
+        }
+      }
+      return null;
     }
-    return null;
-  }
 
+    public Class[] getAdapterList() {
+      return ADAPTERS;
+    }
+
+  }
 }
diff --git a/org.eclipse.m2e.core.ui/src/org/eclipse/m2e/core/ui/internal/views/nodes/IndexedArtifactNode.java b/org.eclipse.m2e.core.ui/src/org/eclipse/m2e/core/ui/internal/views/nodes/IndexedArtifactNode.java
index d0778c62..f9f3d22d 100644
--- a/org.eclipse.m2e.core.ui/src/org/eclipse/m2e/core/ui/internal/views/nodes/IndexedArtifactNode.java
+++ b/org.eclipse.m2e.core.ui/src/org/eclipse/m2e/core/ui/internal/views/nodes/IndexedArtifactNode.java
@@ -14,77 +14,66 @@ package org.eclipse.m2e.core.ui.internal.views.nodes;
 import java.util.ArrayList;
 import java.util.Set;
 
+import org.eclipse.swt.graphics.Image;
+
 import org.eclipse.m2e.core.internal.index.IndexedArtifact;
 import org.eclipse.m2e.core.internal.index.IndexedArtifactFile;
-import org.eclipse.m2e.core.ui.internal.Messages;
 import org.eclipse.m2e.core.ui.internal.MavenImages;
-import org.eclipse.swt.graphics.Image;
+import org.eclipse.m2e.core.ui.internal.Messages;
+
 
 /**
  * IndexedArtifactNode
- *
+ * 
  * @author dyocum
  */
+@SuppressWarnings("restriction")
 public class IndexedArtifactNode implements IMavenRepositoryNode, IArtifactNode {
 
   private IndexedArtifact artifact;
+
   private Object[] kids = null;
-  public IndexedArtifactNode(IndexedArtifact artifact){
+
+  public IndexedArtifactNode(IndexedArtifact artifact) {
     this.artifact = artifact;
   }
-  /* (non-Javadoc)
-   * @see org.eclipse.m2e.ui.internal.views.IMavenRepositoryNode#getChildren()
-   */
+
   public Object[] getChildren() {
     Set<IndexedArtifactFile> files = artifact.getFiles();
-    if(files == null){
+    if(files == null) {
       return new Object[0];
     }
     ArrayList<Object> fileList = new ArrayList<Object>();
-    for(IndexedArtifactFile iaf : files){
+    for(IndexedArtifactFile iaf : files) {
       fileList.add(new IndexedArtifactFileNode(iaf));
     }
     kids = fileList.toArray(new IndexedArtifactFileNode[fileList.size()]);
     return kids;
   }
 
-  /* (non-Javadoc)
-   * @see org.eclipse.m2e.ui.internal.views.IMavenRepositoryNode#getName()
-   */
   public String getName() {
     // return a.group + ":" + a.artifact;
     String pkg = artifact.getPackaging();
-    if(pkg == null){
+    if(pkg == null) {
       pkg = Messages.IndexedArtifactNode_no_pack;
     }
     return artifact.getArtifactId() + " - " + pkg; //$NON-NLS-1$
   }
 
-  /* (non-Javadoc)
-   * @see org.eclipse.m2e.ui.internal.views.IMavenRepositoryNode#hasChildren()
-   */
   public boolean hasChildren() {
     //return kids != null && kids.length > 0;
     return true;
   }
-  
-  /* (non-Javadoc)
-   * @see org.eclipse.m2e.ui.internal.views.nodes.IMavenRepositoryNode#getImage()
-   */
+
   public Image getImage() {
     return MavenImages.IMG_JAR;
   }
-  /* (non-Javadoc)
-   * @see org.eclipse.m2e.ui.internal.views.nodes.IArtifactNode#getDocumentKey()
-   */
+
   public String getDocumentKey() {
     return artifact.getArtifactId();
   }
-  /* (non-Javadoc)
-   * @see org.eclipse.m2e.ui.internal.views.nodes.IMavenRepositoryNode#isUpdating()
-   */
+
   public boolean isUpdating() {
-    // TODO Auto-generated method isUpdating
     return false;
   }
 
diff --git a/org.eclipse.m2e.core.ui/src/org/eclipse/m2e/core/ui/internal/wizards/MavenPomSelectionComponent.java b/org.eclipse.m2e.core.ui/src/org/eclipse/m2e/core/ui/internal/wizards/MavenPomSelectionComponent.java
index 146d9943..74e17928 100644
--- a/org.eclipse.m2e.core.ui/src/org/eclipse/m2e/core/ui/internal/wizards/MavenPomSelectionComponent.java
+++ b/org.eclipse.m2e.core.ui/src/org/eclipse/m2e/core/ui/internal/wizards/MavenPomSelectionComponent.java
@@ -11,18 +11,23 @@
 
 package org.eclipse.m2e.core.ui.internal.wizards;
 
+import java.util.ArrayList;
 import java.util.Collections;
 import java.util.HashSet;
 import java.util.LinkedHashMap;
+import java.util.List;
 import java.util.Map;
 import java.util.Set;
 
 import com.ibm.icu.text.DateFormat;
 
+import org.eclipse.core.resources.IProject;
 import org.eclipse.core.runtime.IProgressMonitor;
 import org.eclipse.core.runtime.IStatus;
 import org.eclipse.core.runtime.Status;
 import org.eclipse.core.runtime.jobs.Job;
+import org.eclipse.jface.viewers.DecoratingStyledCellLabelProvider;
+import org.eclipse.jface.viewers.DecorationContext;
 import org.eclipse.jface.viewers.DelegatingStyledCellLabelProvider;
 import org.eclipse.jface.viewers.IColorProvider;
 import org.eclipse.jface.viewers.IDecoration;
@@ -54,17 +59,21 @@ import org.eclipse.swt.widgets.Label;
 import org.eclipse.swt.widgets.Text;
 import org.eclipse.swt.widgets.Tree;
 import org.eclipse.swt.widgets.TreeItem;
+import org.eclipse.ui.PlatformUI;
 
 import org.apache.lucene.search.BooleanQuery;
 
 import org.eclipse.m2e.core.MavenPlugin;
 import org.eclipse.m2e.core.embedder.ArtifactKey;
 import org.eclipse.m2e.core.internal.IMavenConstants;
+import org.eclipse.m2e.core.internal.MavenPluginActivator;
 import org.eclipse.m2e.core.internal.index.IIndex;
 import org.eclipse.m2e.core.internal.index.IndexManager;
 import org.eclipse.m2e.core.internal.index.IndexedArtifact;
 import org.eclipse.m2e.core.internal.index.IndexedArtifactFile;
 import org.eclipse.m2e.core.internal.index.UserInputSearchExpression;
+import org.eclipse.m2e.core.internal.index.filter.ArtifactFilterManager;
+import org.eclipse.m2e.core.ui.internal.M2EUIPluginActivator;
 import org.eclipse.m2e.core.ui.internal.MavenImages;
 import org.eclipse.m2e.core.ui.internal.Messages;
 
@@ -74,8 +83,12 @@ import org.eclipse.m2e.core.ui.internal.Messages;
  * 
  * @author Eugene Kuleshov
  */
+@SuppressWarnings("restriction")
 public class MavenPomSelectionComponent extends Composite {
 
+  public static final String PROP_DECORATION_CONTEXT_PROJECT = M2EUIPluginActivator.PLUGIN_ID
+      + ".decorationContextProject"; //$NON-NLS-1$
+
   /* (non-Javadoc)
    * @see org.eclipse.swt.widgets.Widget#dispose()
    */
@@ -123,6 +136,8 @@ public class MavenPomSelectionComponent extends Composite {
   final HashSet<String> artifactKeys = new HashSet<String>();
   final HashSet<String> managedKeys = new HashSet<String>();
 
+  private IProject project;
+
   public MavenPomSelectionComponent(Composite parent, int style) {
     super(parent, style);
     createSearchComposite();
@@ -199,8 +214,10 @@ public class MavenPomSelectionComponent extends Composite {
   }
 
 
-  public void init(String queryText, String queryType, Set<ArtifactKey> artifacts, Set<ArtifactKey> managed) {
+  public void init(String queryText, String queryType, IProject project, Set<ArtifactKey> artifacts,
+      Set<ArtifactKey> managed) {
     this.queryType = queryType;
+    this.project = project;
 
     if(queryText != null) {
       searchText.setText(queryText);
@@ -220,13 +237,36 @@ public class MavenPomSelectionComponent extends Composite {
     }
     
     searchResultViewer.setContentProvider(new SearchResultContentProvider());
-    searchResultViewer.setLabelProvider(new DelegatingStyledCellLabelProvider(new SearchResultLabelProvider(artifactKeys, managedKeys)));
+
+    SearchResultLabelProvider labelProvider = new SearchResultLabelProvider(artifactKeys, managedKeys);
+    DecoratingStyledCellLabelProvider decoratingLabelProvider = new DecoratingStyledCellLabelProvider(labelProvider,
+        PlatformUI.getWorkbench().getDecoratorManager().getLabelDecorator(), null);
+    DecorationContext decorationContext = new DecorationContext();
+    if(project != null) {
+      decorationContext.putProperty(PROP_DECORATION_CONTEXT_PROJECT, project);
+    }
+    decoratingLabelProvider.setDecorationContext(decorationContext);
+    searchResultViewer.setLabelProvider(decoratingLabelProvider);
+
     searchResultViewer.addSelectionChangedListener(new ISelectionChangedListener() {
       public void selectionChanged(SelectionChangedEvent event) {
         IStructuredSelection selection = (IStructuredSelection) event.getSelection();
         if(!selection.isEmpty()) {
-          if(selection.size() == 1) {
-            IndexedArtifactFile f = getSelectedIndexedArtifactFile(selection.getFirstElement());
+          List<IndexedArtifactFile> files = getSelectedIndexedArtifactFiles(selection);
+
+          ArtifactFilterManager filterManager = MavenPluginActivator.getDefault().getArifactFilterManager();
+
+          for (IndexedArtifactFile file : files) {
+            ArtifactKey key = (ArtifactKey) file.getAdapter(ArtifactKey.class);
+            IStatus status = filterManager.filter(MavenPomSelectionComponent.this.project, key);
+            if (!status.isOK()) {
+              setStatus(IStatus.ERROR, status.getMessage());
+              return; // TODO not nice to exit method like this
+            }
+          }
+
+          if(files.size() == 1) {
+            IndexedArtifactFile f = files.get(0);
             // int severity = artifactKeys.contains(f.group + ":" + f.artifact) ? IStatus.ERROR : IStatus.OK;
             int severity = IStatus.OK;
             String date = DateFormat.getDateTimeInstance(DateFormat.MEDIUM, DateFormat.SHORT).format(f.date);
@@ -284,25 +324,32 @@ public class MavenPomSelectionComponent extends Composite {
   }
 
   public IndexedArtifactFile getIndexedArtifactFile() {
-    IStructuredSelection selection = (IStructuredSelection) searchResultViewer.getSelection();
-    return getSelectedIndexedArtifactFile(selection.getFirstElement());
+    List<IndexedArtifactFile> files = getSelectedIndexedArtifactFiles((IStructuredSelection) searchResultViewer.getSelection());
+    return !files.isEmpty()? files.get(0): null;
   }
 
-  IndexedArtifactFile getSelectedIndexedArtifactFile(Object element) {
-    if(element instanceof IndexedArtifact) {
-      //the idea here is that if we have a managed version for something, then the IndexedArtifact shall
-      //represent that value..
-      IndexedArtifact ia = (IndexedArtifact)element;
-      if (managedKeys.contains(getKey(ia))) {
-        for (IndexedArtifactFile file : ia.getFiles()) {
-          if (managedKeys.contains(getKey(file))) {
-            return file;
+  List<IndexedArtifactFile> getSelectedIndexedArtifactFiles(IStructuredSelection selection) {
+    ArrayList<IndexedArtifactFile> result = new ArrayList<IndexedArtifactFile>();
+    for(Object element : selection.toList()) {
+      if(element instanceof IndexedArtifact) {
+        //the idea here is that if we have a managed version for something, then the IndexedArtifact shall
+        //represent that value..
+        IndexedArtifact ia = (IndexedArtifact) element;
+        if(managedKeys.contains(getKey(ia))) {
+          for(IndexedArtifactFile file : ia.getFiles()) {
+            if(managedKeys.contains(getKey(file))) {
+              result.add(file);
+            }
           }
+        } else {
+          result.add(ia.getFiles().iterator().next());
         }
+      } else if(element instanceof IndexedArtifactFile) {
+        result.add((IndexedArtifactFile) element);
       }
-      return ia.getFiles().iterator().next();
     }
-    return (IndexedArtifactFile) element;
+
+    return result;
   }
 
   void scheduleSearch(String query, boolean delay) {