JAL-1847 superpose checkbox in structure chooser
[jalview.git] / src / jalview / gui / StructureChooser.java
index 4b3f5de..1b69989 100644 (file)
@@ -1,6 +1,6 @@
 /*
- * Jalview - A Sequence Alignment Editor and Viewer (Version 2.8.2)
- * Copyright (C) 2014 The Jalview Authors
+ * Jalview - A Sequence Alignment Editor and Viewer ($$Version-Rel$$)
+ * Copyright (C) $$Year-Rel$$ The Jalview Authors
  * 
  * This file is part of Jalview.
  * 
 
 package jalview.gui;
 
+import jalview.api.structures.JalviewStructureDisplayI;
+import jalview.bin.Cache;
+import jalview.bin.Jalview;
 import jalview.datamodel.DBRefEntry;
+import jalview.datamodel.DBRefSource;
 import jalview.datamodel.PDBEntry;
 import jalview.datamodel.SequenceI;
+import jalview.fts.api.FTSData;
+import jalview.fts.api.FTSDataColumnI;
+import jalview.fts.api.FTSRestClientI;
+import jalview.fts.core.FTSRestRequest;
+import jalview.fts.core.FTSRestResponse;
+import jalview.fts.service.pdb.PDBFTSRestClient;
+import jalview.io.DataSourceType;
 import jalview.jbgui.GStructureChooser;
+import jalview.structure.StructureMapping;
+import jalview.structure.StructureSelectionManager;
 import jalview.util.MessageManager;
-import jalview.ws.dbsources.PDBRestClient;
-import jalview.ws.dbsources.PDBRestClient.PDBDocField;
-import jalview.ws.uimodel.PDBRestRequest;
-import jalview.ws.uimodel.PDBRestResponse;
-import jalview.ws.uimodel.PDBRestResponse.PDBResponseSummary;
+import jalview.ws.DBRefFetcher;
+import jalview.ws.sifts.SiftsSettings;
 
 import java.awt.event.ItemEvent;
 import java.util.ArrayList;
 import java.util.Collection;
 import java.util.HashSet;
+import java.util.LinkedHashSet;
 import java.util.List;
+import java.util.Objects;
+import java.util.Set;
 import java.util.Vector;
 
 import javax.swing.JCheckBox;
-import javax.swing.JOptionPane;
-import javax.swing.ListSelectionModel;
+import javax.swing.JComboBox;
+import javax.swing.JLabel;
+import javax.swing.JTable;
+import javax.swing.SwingUtilities;
+import javax.swing.table.AbstractTableModel;
 
 /**
  * Provides the behaviors for the Structure chooser Panel
@@ -51,8 +67,9 @@ import javax.swing.ListSelectionModel;
  */
 @SuppressWarnings("serial")
 public class StructureChooser extends GStructureChooser
+        implements IProgressIndicator
 {
-  private boolean structuresDiscovered = false;
+  private static int MAX_QLENGTH = 7820;
 
   private SequenceI selectedSequence;
 
@@ -60,12 +77,17 @@ public class StructureChooser extends GStructureChooser
 
   private IProgressIndicator progressIndicator;
 
-  private Collection<PDBResponseSummary> discoveredStructuresSet = new HashSet<PDBResponseSummary>();
+  private Collection<FTSData> discoveredStructuresSet;
 
-  private PDBRestRequest pdbRequest;
+  private FTSRestRequest lastPdbRequest;
 
-  private PDBRestClient pdbRestCleint;
+  private FTSRestClientI pdbRestCleint;
 
+  private String selectedPdbFileName;
+
+  private boolean isValidPBDEntry;
+
+  private boolean cachedPDBExists;
 
   public StructureChooser(SequenceI[] selectedSeqs, SequenceI selectedSeq,
           AlignmentPanel ap)
@@ -82,16 +104,31 @@ public class StructureChooser extends GStructureChooser
    */
   public void init()
   {
+    if (!Jalview.isHeadlessMode())
+    {
+      progressBar = new ProgressBar(this.statusPanel, this.statusBar);
+    }
+
+    chk_superpose.setSelected(Cache.getDefault("AUTOSUPERIMPOSE", true));
+
+    // ensure a filter option is in force for search
+    populateFilterComboBox(true, cachedPDBExists);
     Thread discoverPDBStructuresThread = new Thread(new Runnable()
     {
       @Override
       public void run()
       {
         long startTime = System.currentTimeMillis();
-        String msg = MessageManager.getString("status.fetching_db_refs");
-        updateProgressIndicator(msg, startTime);
+        updateProgressIndicator(MessageManager
+                .getString("status.loading_cached_pdb_entries"), startTime);
+        loadLocalCachedPDBEntries();
+        updateProgressIndicator(null, startTime);
+        updateProgressIndicator(MessageManager.getString(
+                "status.searching_for_pdb_structures"), startTime);
         fetchStructuresMetaData();
-        populateFilterComboBox();
+        // revise filter options if no results were found
+        populateFilterComboBox(isStructuresDiscovered(), cachedPDBExists);
+        discoverStructureViews();
         updateProgressIndicator(null, startTime);
         mainFrame.setVisible(true);
         updateCurrentView();
@@ -100,6 +137,47 @@ public class StructureChooser extends GStructureChooser
     discoverPDBStructuresThread.start();
   }
 
+  private void discoverStructureViews()
+  {
+    if (Desktop.instance != null)
+    {
+      targetView.removeAllItems();
+      targetView.addItem(
+              new StructureViewer(ap.getStructureSelectionManager()));
+      if (lastTargetedView != null && !lastTargetedView.isVisible())
+      {
+        lastTargetedView = null;
+      }
+      int linkedViewsAt = 1;
+      for (StructureViewerBase view : Desktop.instance
+              .getStructureViewers(null, null))
+      {
+        StructureViewer viewHandler = (lastTargetedView != null
+                && lastTargetedView.sview == view) ? lastTargetedView
+                        : StructureViewer.reconfigure(view);
+
+        if (view.isLinkedWith(ap))
+        {
+          targetView.insertItemAt(viewHandler,
+                  linkedViewsAt++);
+        }
+        else
+        {
+          targetView.addItem(viewHandler);
+        }
+      }
+      targetView.setVisible(targetView.getItemCount() > 1);
+
+      // finally, restore last targeted view by default.
+      if (lastTargetedView != null)
+      {
+        targetView.setSelectedItem(lastTargetedView);
+      }
+    }
+  }
+
+  private static StructureViewer lastTargetedView = null;
+
   /**
    * Updates the progress indicator with the specified message
    * 
@@ -123,68 +201,95 @@ public class StructureChooser extends GStructureChooser
   public void fetchStructuresMetaData()
   {
     long startTime = System.currentTimeMillis();
-    List<PDBDocField> wantedFields = new ArrayList<PDBDocField>();
-    // wantedFields.add(PDBDocField.MOLECULE_TYPE);
-    wantedFields.add(PDBDocField.PDB_ID);
-    // wantedFields.add(PDBDocField.GENUS);
-    // wantedFields.add(PDBDocField.GENE_NAME);
-    wantedFields.add(PDBDocField.TITLE);
-    pdbRequest = new PDBRestRequest();
-    pdbRequest.setAllowEmptySeq(false);
-    pdbRequest.setResponseSize(500);
-    pdbRequest.setFieldToSearchBy("(text:");
-    pdbRequest.setWantedFields(wantedFields);
+    pdbRestCleint = PDBFTSRestClient.getInstance();
+    Collection<FTSDataColumnI> wantedFields = pdbDocFieldPrefs
+            .getStructureSummaryFields();
+
+    discoveredStructuresSet = new LinkedHashSet<>();
+    HashSet<String> errors = new HashSet<>();
     for (SequenceI seq : selectedSequences)
     {
+      FTSRestRequest pdbRequest = new FTSRestRequest();
+      pdbRequest.setAllowEmptySeq(false);
+      pdbRequest.setResponseSize(500);
+      pdbRequest.setFieldToSearchBy("(");
+      FilterOption selectedFilterOpt = ((FilterOption) cmb_filterOption
+              .getSelectedItem());
+      pdbRequest.setFieldToSortBy(selectedFilterOpt.getValue(),
+              !chk_invertFilter.isSelected());
+      pdbRequest.setWantedFields(wantedFields);
       pdbRequest.setSearchTerm(buildQuery(seq) + ")");
-      pdbRequest.setAssociatedSequence(seq.getName());
-      pdbRestCleint = new PDBRestClient();
-      PDBRestResponse resultList = pdbRestCleint.executeRequest(pdbRequest);
+      pdbRequest.setAssociatedSequence(seq);
+      FTSRestResponse resultList;
+      try
+      {
+        resultList = pdbRestCleint.executeRequest(pdbRequest);
+      } catch (Exception e)
+      {
+        e.printStackTrace();
+        errors.add(e.getMessage());
+        continue;
+      }
+      lastPdbRequest = pdbRequest;
       if (resultList.getSearchSummary() != null
               && !resultList.getSearchSummary().isEmpty())
       {
         discoveredStructuresSet.addAll(resultList.getSearchSummary());
-        updateSequenceDbRef(seq, resultList.getSearchSummary());
       }
     }
 
     int noOfStructuresFound = 0;
+    String totalTime = (System.currentTimeMillis() - startTime)
+            + " milli secs";
     if (discoveredStructuresSet != null
             && !discoveredStructuresSet.isEmpty())
     {
-      jList_FoundStructures.setModel(PDBRestResponse
-              .getListModel(discoveredStructuresSet));
-      tbl_summary.setModel(PDBRestResponse.getTableModel(pdbRequest,
-              discoveredStructuresSet));
-      // resizeColumnWidth(summaryTable);
-      structuresDiscovered = true;
+      getResultTable().setModel(FTSRestResponse
+              .getTableModel(lastPdbRequest, discoveredStructuresSet));
       noOfStructuresFound = discoveredStructuresSet.size();
+      mainFrame.setTitle(MessageManager.formatMessage(
+              "label.structure_chooser_no_of_structures",
+              noOfStructuresFound, totalTime));
+    }
+    else
+    {
+      mainFrame.setTitle(MessageManager
+              .getString("label.structure_chooser_manual_association"));
+      if (errors.size() > 0)
+      {
+        StringBuilder errorMsg = new StringBuilder();
+        for (String error : errors)
+        {
+          errorMsg.append(error).append("\n");
+        }
+        JvOptionPane.showMessageDialog(this, errorMsg.toString(),
+                MessageManager.getString("label.pdb_web-service_error"),
+                JvOptionPane.ERROR_MESSAGE);
+      }
     }
-    String totalTime = (System.currentTimeMillis() - startTime)
-            + " milli secs";
-    mainFrame.setTitle("Structure Chooser - " + noOfStructuresFound
-            + " Found (" + totalTime + ")");
   }
 
-  /**
-   * Update the DBRef entry for a given sequence with values retrieved from
-   * PDBResponseSummary
-   * 
-   * @param seq
-   *          the Sequence to update its DBRef entry
-   * @param responseSummaries
-   *          a collection of PDBResponseSummary
-   */
-  public void updateSequenceDbRef(SequenceI seq,
-          Collection<PDBResponseSummary> responseSummaries)
+  public void loadLocalCachedPDBEntries()
   {
-    for (PDBResponseSummary response : responseSummaries)
+    ArrayList<CachedPDB> entries = new ArrayList<>();
+    for (SequenceI seq : selectedSequences)
     {
-      PDBEntry newEntry = new PDBEntry();
-      newEntry.setId(response.getPdbId());
-      newEntry.setType("PDB");
-      seq.getDatasetSequence().addPDBId(newEntry);
+      if (seq.getDatasetSequence() != null
+              && seq.getDatasetSequence().getAllPDBEntries() != null)
+      {
+        for (PDBEntry pdbEntry : seq.getDatasetSequence()
+                .getAllPDBEntries())
+        {
+          if (pdbEntry.getFile() != null)
+          {
+            entries.add(new CachedPDB(seq, pdbEntry));
+          }
+        }
+      }
     }
+    cachedPDBExists = !entries.isEmpty();
+    PDBEntryTableModel tableModelx = new PDBEntryTableModel(entries);
+    tbl_local_pdb.setModel(tableModelx);
   }
 
   /**
@@ -194,42 +299,139 @@ public class StructureChooser extends GStructureChooser
    *          the sequences to build a query for
    * @return the built query string
    */
-  @SuppressWarnings("unchecked")
+
   public static String buildQuery(SequenceI seq)
   {
-    String query = seq.getName();
+    boolean isPDBRefsFound = false;
+    boolean isUniProtRefsFound = false;
     StringBuilder queryBuilder = new StringBuilder();
-    int count = 0;
+    Set<String> seqRefs = new LinkedHashSet<>();
+
+    if (seq.getAllPDBEntries() != null
+            && queryBuilder.length() < MAX_QLENGTH)
+    {
+      for (PDBEntry entry : seq.getAllPDBEntries())
+      {
+        if (isValidSeqName(entry.getId()))
+        {
+          queryBuilder.append("pdb_id:").append(entry.getId().toLowerCase())
+                  .append(" OR ");
+          isPDBRefsFound = true;
+        }
+      }
+    }
 
-    if (seq.getPDBId() != null)
+    if (seq.getDBRefs() != null && seq.getDBRefs().length != 0)
     {
-      for (PDBEntry entry : (Vector<PDBEntry>) seq.getPDBId())
+      for (DBRefEntry dbRef : seq.getDBRefs())
       {
-        queryBuilder.append("text:").append(entry.getId()).append(" OR ");
+        if (isValidSeqName(getDBRefId(dbRef))
+                && queryBuilder.length() < MAX_QLENGTH)
+        {
+          if (dbRef.getSource().equalsIgnoreCase(DBRefSource.UNIPROT))
+          {
+            queryBuilder.append("uniprot_accession:")
+                    .append(getDBRefId(dbRef)).append(" OR ");
+            queryBuilder.append("uniprot_id:").append(getDBRefId(dbRef))
+                    .append(" OR ");
+            isUniProtRefsFound = true;
+          }
+          else if (dbRef.getSource().equalsIgnoreCase(DBRefSource.PDB))
+          {
+
+            queryBuilder.append("pdb_id:")
+                    .append(getDBRefId(dbRef).toLowerCase()).append(" OR ");
+            isPDBRefsFound = true;
+          }
+          else
+          {
+            seqRefs.add(getDBRefId(dbRef));
+          }
+        }
       }
     }
 
-    if (seq.getDBRef() != null && seq.getDBRef().length != 0)
+    if (!isPDBRefsFound && !isUniProtRefsFound)
     {
-      for (DBRefEntry dbRef : seq.getDBRef())
+      String seqName = seq.getName();
+      seqName = sanitizeSeqName(seqName);
+      String[] names = seqName.toLowerCase().split("\\|");
+      for (String name : names)
       {
-        queryBuilder.append("text:")
-                .append(dbRef.getAccessionId().replaceAll("GO:", ""))
-                .append(" OR ");
-        ++count;
-        if (count > 10)
+        // System.out.println("Found name : " + name);
+        name.trim();
+        if (isValidSeqName(name))
         {
-          break;
+          seqRefs.add(name);
         }
       }
-      int endIndex = queryBuilder.lastIndexOf(" OR ");
-      query = queryBuilder.toString().substring(5, endIndex);
+
+      for (String seqRef : seqRefs)
+      {
+        queryBuilder.append("text:").append(seqRef).append(" OR ");
+      }
+    }
+
+    int endIndex = queryBuilder.lastIndexOf(" OR ");
+    if (queryBuilder.toString().length() < 6)
+    {
+      return null;
     }
-    // System.out.println("Query -----> " + query);
+    String query = queryBuilder.toString().substring(0, endIndex);
     return query;
   }
 
   /**
+   * Remove the following special characters from input string +, -, &, !, (, ),
+   * {, }, [, ], ^, ", ~, *, ?, :, \
+   * 
+   * @param seqName
+   * @return
+   */
+  static String sanitizeSeqName(String seqName)
+  {
+    Objects.requireNonNull(seqName);
+    return seqName.replaceAll("\\[\\d*\\]", "")
+            .replaceAll("[^\\dA-Za-z|_]", "").replaceAll("\\s+", "+");
+  }
+
+  /**
+   * Ensures sequence ref names are not less than 3 characters and does not
+   * contain a database name
+   * 
+   * @param seqName
+   * @return
+   */
+  public static boolean isValidSeqName(String seqName)
+  {
+    // System.out.println("seqName : " + seqName);
+    String ignoreList = "pdb,uniprot,swiss-prot";
+    if (seqName.length() < 3)
+    {
+      return false;
+    }
+    if (seqName.contains(":"))
+    {
+      return false;
+    }
+    seqName = seqName.toLowerCase();
+    for (String ignoredEntry : ignoreList.split(","))
+    {
+      if (seqName.contains(ignoredEntry))
+      {
+        return false;
+      }
+    }
+    return true;
+  }
+
+  public static String getDBRefId(DBRefEntry dbRef)
+  {
+    String ref = dbRef.getAccessionId().replaceAll("GO:", "");
+    return ref;
+  }
+
+  /**
    * Filters a given list of discovered structures based on supplied argument
    * 
    * @param fieldToFilterBy
@@ -242,204 +444,316 @@ public class StructureChooser extends GStructureChooser
       @Override
       public void run()
       {
-        try
-        {
-          lbl_loading.setVisible(true);
-          pdbRequest.setResponseSize(1);
-          pdbRequest.setFieldToSearchBy("(text:");
-          pdbRequest.setFieldToSortBy(fieldToFilterBy,
-                  !chk_invertFilter.isSelected());
+        long startTime = System.currentTimeMillis();
+        pdbRestCleint = PDBFTSRestClient.getInstance();
+        lbl_loading.setVisible(true);
+        Collection<FTSDataColumnI> wantedFields = pdbDocFieldPrefs
+                .getStructureSummaryFields();
+        Collection<FTSData> filteredResponse = new HashSet<>();
+        HashSet<String> errors = new HashSet<>();
 
-          Collection<PDBResponseSummary> filteredResponse = new HashSet<PDBResponseSummary>();
-          for (SequenceI seq : selectedSequences)
+        for (SequenceI seq : selectedSequences)
+        {
+          FTSRestRequest pdbRequest = new FTSRestRequest();
+          if (fieldToFilterBy.equalsIgnoreCase("uniprot_coverage"))
           {
+            pdbRequest.setAllowEmptySeq(false);
+            pdbRequest.setResponseSize(1);
+            pdbRequest.setFieldToSearchBy("(");
             pdbRequest.setSearchTerm(buildQuery(seq) + ")");
-            pdbRequest.setAssociatedSequence(seq.getName());
-            pdbRestCleint = new PDBRestClient();
-            PDBRestResponse resultList = pdbRestCleint
-                    .executeRequest(pdbRequest);
-            if (resultList.getSearchSummary() != null
-                    && !resultList.getSearchSummary().isEmpty())
-            {
-              filteredResponse.addAll(resultList.getSearchSummary());
-            }
+            pdbRequest.setWantedFields(wantedFields);
+            pdbRequest.setAssociatedSequence(seq);
+            pdbRequest.setFacet(true);
+            pdbRequest.setFacetPivot(fieldToFilterBy + ",entry_entity");
+            pdbRequest.setFacetPivotMinCount(1);
           }
+          else
+          {
+            pdbRequest.setAllowEmptySeq(false);
+            pdbRequest.setResponseSize(1);
+            pdbRequest.setFieldToSearchBy("(");
+            pdbRequest.setFieldToSortBy(fieldToFilterBy,
+                    !chk_invertFilter.isSelected());
+            pdbRequest.setSearchTerm(buildQuery(seq) + ")");
+            pdbRequest.setWantedFields(wantedFields);
+            pdbRequest.setAssociatedSequence(seq);
+          }
+          FTSRestResponse resultList;
+          try
+          {
+            resultList = pdbRestCleint.executeRequest(pdbRequest);
+          } catch (Exception e)
+          {
+            e.printStackTrace();
+            errors.add(e.getMessage());
+            continue;
+          }
+          lastPdbRequest = pdbRequest;
+          if (resultList.getSearchSummary() != null
+                  && !resultList.getSearchSummary().isEmpty())
+          {
+            filteredResponse.addAll(resultList.getSearchSummary());
+          }
+        }
 
-          if (filteredResponse != null)
+        String totalTime = (System.currentTimeMillis() - startTime)
+                + " milli secs";
+        if (!filteredResponse.isEmpty())
+        {
+          final int filterResponseCount = filteredResponse.size();
+          Collection<FTSData> reorderedStructuresSet = new LinkedHashSet<>();
+          reorderedStructuresSet.addAll(filteredResponse);
+          reorderedStructuresSet.addAll(discoveredStructuresSet);
+          getResultTable().setModel(FTSRestResponse
+                  .getTableModel(lastPdbRequest, reorderedStructuresSet));
+
+          FTSRestResponse.configureTableColumn(getResultTable(),
+                  wantedFields, tempUserPrefs);
+          getResultTable().getColumn("Ref Sequence").setPreferredWidth(120);
+          getResultTable().getColumn("Ref Sequence").setMinWidth(100);
+          getResultTable().getColumn("Ref Sequence").setMaxWidth(200);
+          // Update table selection model here
+          getResultTable().addRowSelectionInterval(0,
+                  filterResponseCount - 1);
+          mainFrame.setTitle(MessageManager.formatMessage(
+                  "label.structure_chooser_filter_time", totalTime));
+        }
+        else
+        {
+          mainFrame.setTitle(MessageManager.formatMessage(
+                  "label.structure_chooser_filter_time", totalTime));
+          if (errors.size() > 0)
           {
-            int filterResponseCount = filteredResponse.size();
-            List<PDBResponseSummary> originalDiscoveredStructuresList = new ArrayList<PDBResponseSummary>(
-                    discoveredStructuresSet);
-            originalDiscoveredStructuresList.removeAll(filteredResponse);
-
-            Collection<PDBResponseSummary> reorderedStructuresSet = new ArrayList<PDBResponseSummary>();
-            reorderedStructuresSet.addAll(filteredResponse);
-            reorderedStructuresSet.addAll(originalDiscoveredStructuresList);
-
-            jList_FoundStructures.setModel(PDBRestResponse
-                    .getListModel(reorderedStructuresSet));
-            tbl_summary.setModel(PDBRestResponse.getTableModel(pdbRequest,
-                    reorderedStructuresSet));
-
-            // int[] filterIndice = new int[filterResponseCount];
-            ListSelectionModel model = tbl_summary.getSelectionModel();
-            model.clearSelection();
-            for (int x = 0; x < filterResponseCount; x++)
+            StringBuilder errorMsg = new StringBuilder();
+            for (String error : errors)
             {
-              // filterIndice[x] = x;
-              model.addSelectionInterval(x, x);
+              errorMsg.append(error).append("\n");
             }
-
-            // Discard unwanted objects to make them eligible for garbage
-            // collection
-            originalDiscoveredStructuresList = null;
-            reorderedStructuresSet = null;
-
-            // jListFoundStructures.setSelectedIndices(filterIndice);
+            JvOptionPane.showMessageDialog(null, errorMsg.toString(),
+                    MessageManager.getString("label.pdb_web-service_error"),
+                    JvOptionPane.ERROR_MESSAGE);
           }
-
-          lbl_loading.setVisible(false);
-        } catch (Exception e)
-        {
-          e.printStackTrace();
         }
+
+        lbl_loading.setVisible(false);
+
+        validateSelections();
       }
     });
     filterThread.start();
   }
 
   /**
-   * Determines the column index for the pdb id in the summary table. The pdb id
-   * serves as a unique identifier for a given row in the summary table
-   * 
-   * @param wantedFeilds
-   *          the available table columns in no particular order
-   * @return the pdb id field column index
-   */
-  public static int getPDBIdColumIndex(Collection<PDBDocField> wantedFeilds)
-  {
-    int pdbFeildIndex = 1;
-    for (PDBDocField feild : wantedFeilds)
-    {
-      if (feild.equals(PDBDocField.PDB_ID))
-      {
-        break;
-      }
-      ++pdbFeildIndex;
-    }
-    return pdbFeildIndex;
-  }
-
-  /**
    * Handles action event for btn_pdbFromFile
    */
+  @Override
   public void pdbFromFile_actionPerformed()
   {
     jalview.io.JalviewFileChooser chooser = new jalview.io.JalviewFileChooser(
             jalview.bin.Cache.getProperty("LAST_DIRECTORY"));
     chooser.setFileView(new jalview.io.JalviewFileView());
-    chooser.setDialogTitle(MessageManager.formatMessage(
-            "label.select_pdb_file_for", new String[]
-            { selectedSequence.getDisplayId(false) }));
+    chooser.setDialogTitle(
+            MessageManager.formatMessage("label.select_pdb_file_for",
+                    selectedSequence.getDisplayId(false)));
     chooser.setToolTipText(MessageManager.formatMessage(
-            "label.load_pdb_file_associate_with_sequence", new String[]
-            { selectedSequence.getDisplayId(false) }));
+            "label.load_pdb_file_associate_with_sequence",
+            selectedSequence.getDisplayId(false)));
 
     int value = chooser.showOpenDialog(null);
     if (value == jalview.io.JalviewFileChooser.APPROVE_OPTION)
     {
-      String choice = chooser.getSelectedFile().getPath();
-      jalview.bin.Cache.setProperty("LAST_DIRECTORY", choice);
-      new AssociatePdbFileWithSeq().associatePdbWithSeq(choice,
-              jalview.io.AppletFormatAdapter.FILE, selectedSequence, true,
-              Desktop.instance);
+      selectedPdbFileName = chooser.getSelectedFile().getPath();
+      jalview.bin.Cache.setProperty("LAST_DIRECTORY", selectedPdbFileName);
+      validateSelections();
     }
   }
 
   /**
-   * Handles action event for btn_ok
+   * Populates the filter combo-box options dynamically depending on discovered
+   * structures
    */
-  @Override
-  public void ok_ActionPerformed()
+  protected void populateFilterComboBox(boolean haveData,
+          boolean cachedPDBExist)
   {
-    int pdbIdCol = getPDBIdColumIndex(pdbRequest.getWantedFields());
-    int[] selectedRows = tbl_summary.getSelectedRows();
-    PDBEntry[] pdbEntriesToView = new PDBEntry[selectedRows.length];
-    int count = 0;
-    for (int summaryRow : selectedRows)
+    /*
+     * temporarily suspend the change listener behaviour
+     */
+    cmb_filterOption.removeItemListener(this);
+
+    cmb_filterOption.removeAllItems();
+    if (haveData)
+    {
+      cmb_filterOption.addItem(new FilterOption(
+              MessageManager.getString("label.best_quality"),
+              "overall_quality", VIEWS_FILTER, false));
+      cmb_filterOption.addItem(new FilterOption(
+              MessageManager.getString("label.best_resolution"),
+              "resolution", VIEWS_FILTER, false));
+      cmb_filterOption.addItem(new FilterOption(
+              MessageManager.getString("label.most_protein_chain"),
+              "number_of_protein_chains", VIEWS_FILTER, false));
+      cmb_filterOption.addItem(new FilterOption(
+              MessageManager.getString("label.most_bound_molecules"),
+              "number_of_bound_molecules", VIEWS_FILTER, false));
+      cmb_filterOption.addItem(new FilterOption(
+              MessageManager.getString("label.most_polymer_residues"),
+              "number_of_polymer_residues", VIEWS_FILTER, true));
+    }
+    cmb_filterOption.addItem(
+            new FilterOption(MessageManager.getString("label.enter_pdb_id"),
+                    "-", VIEWS_ENTER_ID, false));
+    cmb_filterOption.addItem(
+            new FilterOption(MessageManager.getString("label.from_file"),
+                    "-", VIEWS_FROM_FILE, false));
+
+    if (cachedPDBExist)
     {
-      String pdbIdStr = tbl_summary.getValueAt(summaryRow, pdbIdCol)
-              .toString();
-      PDBEntry pdbEntry = new PDBEntry();
-      pdbEntry.setId(pdbIdStr);
-      pdbEntry.setType("PDB");
-      pdbEntriesToView[count++] = pdbEntry;
+      FilterOption cachedOption = new FilterOption(
+              MessageManager.getString("label.cached_structures"),
+              "-", VIEWS_LOCAL_PDB, false);
+      cmb_filterOption.addItem(cachedOption);
+      cmb_filterOption.setSelectedItem(cachedOption);
     }
-    new StructureViewer(ap.getStructureSelectionManager()).viewStructures(
-            ap, pdbEntriesToView, ap.av.collateForPDB(pdbEntriesToView));
+
+    cmb_filterOption.addItemListener(this);
   }
 
   /**
-   * Handles action event for manual entry of pdb ids
+   * Updates the displayed view based on the selected filter option
    */
-  public void enterPDB_actionPerformed()
+  protected void updateCurrentView()
   {
-    String id = JOptionPane.showInternalInputDialog(Desktop.desktop,
-            MessageManager.getString("label.enter_pdb_id"),
-            MessageManager.getString("label.enter_pdb_id"),
-            JOptionPane.QUESTION_MESSAGE);
-    if (id != null && id.length() > 0)
+    FilterOption selectedFilterOpt = ((FilterOption) cmb_filterOption
+            .getSelectedItem());
+    layout_switchableViews.show(pnl_switchableViews,
+            selectedFilterOpt.getView());
+    String filterTitle = mainFrame.getTitle();
+    mainFrame.setTitle(frameTitle);
+    chk_invertFilter.setVisible(false);
+    if (selectedFilterOpt.getView() == VIEWS_FILTER)
     {
-      PDBEntry entry = new PDBEntry();
-      entry.setId(id.toUpperCase());
-      selectedSequence.getDatasetSequence().addPDBId(entry);
+      mainFrame.setTitle(filterTitle);
+      chk_invertFilter.setVisible(true);
+      filterResultSet(selectedFilterOpt.getValue());
     }
+    else if (selectedFilterOpt.getView() == VIEWS_ENTER_ID
+            || selectedFilterOpt.getView() == VIEWS_FROM_FILE)
+    {
+      mainFrame.setTitle(MessageManager
+              .getString("label.structure_chooser_manual_association"));
+      idInputAssSeqPanel.loadCmbAssSeq();
+      fileChooserAssSeqPanel.loadCmbAssSeq();
+    }
+    validateSelections();
   }
 
   /**
-   * Populates the filter combo-box options dynamically depending on discovered
-   * structures
+   * Validates user selection and activates the view button if all parameters
+   * are correct
    */
-  protected void populateFilterComboBox()
+  @Override
+  public void validateSelections()
   {
-    if (isStructuresDiscovered())
+    FilterOption selectedFilterOpt = ((FilterOption) cmb_filterOption
+            .getSelectedItem());
+    btn_view.setEnabled(false);
+    String currentView = selectedFilterOpt.getView();
+    if (currentView == VIEWS_FILTER)
     {
-      cmb_filterOption.addItem(new FilterOption("Best Quality",
-              PDBDocField.OVERALL_QUALITY.getCode(), VIEWS_FILTER));
-      cmb_filterOption.addItem(new FilterOption("Best UniProt Coverage",
-              PDBDocField.UNIPROT_COVERAGE.getCode(), VIEWS_FILTER));
-      cmb_filterOption.addItem(new FilterOption("Highest Resolution",
-              PDBDocField.RESOLUTION.getCode(), VIEWS_FILTER));
-      cmb_filterOption.addItem(new FilterOption("Highest Protein Chain",
-              PDBDocField.PROTEIN_CHAIN_COUNT.getCode(), VIEWS_FILTER));
-      cmb_filterOption.addItem(new FilterOption("Highest Bound Molecules",
-              PDBDocField.BOUND_MOLECULE_COUNT.getCode(), VIEWS_FILTER));
-      cmb_filterOption.addItem(new FilterOption("Highest Polymer Residues",
-              PDBDocField.POLYMER_RESIDUE_COUNT.getCode(), VIEWS_FILTER));
+      if (getResultTable().getSelectedRows().length > 0)
+      {
+        btn_view.setEnabled(true);
+      }
+    }
+    else if (currentView == VIEWS_LOCAL_PDB)
+    {
+      if (tbl_local_pdb.getSelectedRows().length > 0)
+      {
+        btn_view.setEnabled(true);
+      }
+    }
+    else if (currentView == VIEWS_ENTER_ID)
+    {
+      validateAssociationEnterPdb();
+    }
+    else if (currentView == VIEWS_FROM_FILE)
+    {
+      validateAssociationFromFile();
     }
-    cmb_filterOption.addItem(new FilterOption("Enter PDB Id", "-",
-            VIEWS_ENTER_ID));
-    cmb_filterOption.addItem(new FilterOption("From File", "-",
-            VIEWS_FROM_FILE));
   }
 
   /**
-   * Updates the displayed view based on the selected filter option
+   * Validates inputs from the Manual PDB entry panel
    */
-  protected void updateCurrentView()
+  public void validateAssociationEnterPdb()
   {
-    FilterOption selectedOption = ((FilterOption) cmb_filterOption
-            .getSelectedItem());
-    layout_switchableViews.show(pnl_switchableViews,
-            selectedOption.getView());
-    chk_invertFilter.setEnabled(false);
-    if (selectedOption.getView() == VIEWS_FILTER)
+    AssociateSeqOptions assSeqOpt = (AssociateSeqOptions) idInputAssSeqPanel
+            .getCmb_assSeq().getSelectedItem();
+    lbl_pdbManualFetchStatus.setIcon(errorImage);
+    lbl_pdbManualFetchStatus.setToolTipText("");
+    if (txt_search.getText().length() > 0)
+    {
+      lbl_pdbManualFetchStatus.setToolTipText(JvSwingUtils.wrapTooltip(true,
+              MessageManager.formatMessage("info.no_pdb_entry_found_for",
+                      txt_search.getText())));
+    }
+
+    if (errorWarning.length() > 0)
+    {
+      lbl_pdbManualFetchStatus.setIcon(warningImage);
+      lbl_pdbManualFetchStatus.setToolTipText(
+              JvSwingUtils.wrapTooltip(true, errorWarning.toString()));
+    }
+
+    if (selectedSequences.length == 1 || !assSeqOpt.getName()
+            .equalsIgnoreCase("-Select Associated Seq-"))
+    {
+      txt_search.setEnabled(true);
+      if (isValidPBDEntry)
+      {
+        btn_view.setEnabled(true);
+        lbl_pdbManualFetchStatus.setToolTipText("");
+        lbl_pdbManualFetchStatus.setIcon(goodImage);
+      }
+    }
+    else
+    {
+      txt_search.setEnabled(false);
+      lbl_pdbManualFetchStatus.setIcon(errorImage);
+    }
+  }
+
+  /**
+   * Validates inputs for the manual PDB file selection options
+   */
+  public void validateAssociationFromFile()
+  {
+    AssociateSeqOptions assSeqOpt = (AssociateSeqOptions) fileChooserAssSeqPanel
+            .getCmb_assSeq().getSelectedItem();
+    lbl_fromFileStatus.setIcon(errorImage);
+    if (selectedSequences.length == 1 || (assSeqOpt != null && !assSeqOpt
+            .getName().equalsIgnoreCase("-Select Associated Seq-")))
+    {
+      btn_pdbFromFile.setEnabled(true);
+      if (selectedPdbFileName != null && selectedPdbFileName.length() > 0)
+      {
+        btn_view.setEnabled(true);
+        lbl_fromFileStatus.setIcon(goodImage);
+      }
+    }
+    else
     {
-      chk_invertFilter.setEnabled(true);
-      filterResultSet(selectedOption.getValue());
+      btn_pdbFromFile.setEnabled(false);
+      lbl_fromFileStatus.setIcon(errorImage);
     }
   }
 
+  @Override
+  public void cmbAssSeqStateChanged()
+  {
+    validateSelections();
+  }
+
   /**
    * Handles the state change event for the 'filter' combo-box and 'invert'
    * check-box
@@ -461,19 +775,564 @@ public class StructureChooser extends GStructureChooser
 
   }
 
+  /**
+   * select structures for viewing by their PDB IDs
+   * 
+   * @param pdbids
+   * @return true if structures were found and marked as selected
+   */
+  public boolean selectStructure(String... pdbids)
+  {
+    boolean found = false;
+
+    FilterOption selectedFilterOpt = ((FilterOption) cmb_filterOption
+            .getSelectedItem());
+    String currentView = selectedFilterOpt.getView();
+    JTable restable = (currentView == VIEWS_FILTER) ? getResultTable()
+            : (currentView == VIEWS_LOCAL_PDB) ? tbl_local_pdb : null;
 
-  public boolean isStructuresDiscovered()
+    if (restable == null)
+    {
+      // can't select (enter PDB ID, or load file - need to also select which
+      // sequence to associate with)
+      return false;
+    }
+
+    int pdbIdColIndex = restable.getColumn("PDB Id").getModelIndex();
+    for (int r = 0; r < restable.getRowCount(); r++)
+    {
+      for (int p = 0; p < pdbids.length; p++)
+      {
+        if (String.valueOf(restable.getValueAt(r, pdbIdColIndex))
+                .equalsIgnoreCase(pdbids[p]))
+        {
+          restable.setRowSelectionInterval(r, r);
+          found = true;
+        }
+      }
+    }
+    return found;
+  }
+  /**
+   * Handles action event for btn_ok
+   */
+  @Override
+  public void ok_ActionPerformed()
+  {
+    showStructures(false);
+  }
+
+  /**
+   * structure viewer opened by this dialog, or null
+   */
+  private StructureViewer sViewer = null;
+
+  public void showStructures(boolean waitUntilFinished)
+  {
+
+    final StructureSelectionManager ssm = ap.getStructureSelectionManager();
+
+    final int preferredHeight = pnl_filter.getHeight();
+
+    Runnable viewStruc = new Runnable()
+    {
+      @Override
+      public void run()
+      {
+        FilterOption selectedFilterOpt = ((FilterOption) cmb_filterOption
+                .getSelectedItem());
+        String currentView = selectedFilterOpt.getView();
+        JTable restable = (currentView == VIEWS_FILTER) ? getResultTable()
+                : tbl_local_pdb;
+
+        if (currentView == VIEWS_FILTER)
+        {
+          int pdbIdColIndex = restable.getColumn("PDB Id")
+                  .getModelIndex();
+          int refSeqColIndex = restable.getColumn("Ref Sequence")
+                  .getModelIndex();
+          int[] selectedRows = restable.getSelectedRows();
+          PDBEntry[] pdbEntriesToView = new PDBEntry[selectedRows.length];
+          int count = 0;
+          List<SequenceI> selectedSeqsToView = new ArrayList<>();
+          for (int row : selectedRows)
+          {
+            String pdbIdStr = restable
+                    .getValueAt(row, pdbIdColIndex).toString();
+            SequenceI selectedSeq = (SequenceI) restable
+                    .getValueAt(row, refSeqColIndex);
+            selectedSeqsToView.add(selectedSeq);
+            PDBEntry pdbEntry = selectedSeq.getPDBEntry(pdbIdStr);
+            if (pdbEntry == null)
+            {
+              pdbEntry = getFindEntry(pdbIdStr,
+                      selectedSeq.getAllPDBEntries());
+            }
+
+            if (pdbEntry == null)
+            {
+              pdbEntry = new PDBEntry();
+              pdbEntry.setId(pdbIdStr);
+              pdbEntry.setType(PDBEntry.Type.PDB);
+              selectedSeq.getDatasetSequence().addPDBId(pdbEntry);
+            }
+            pdbEntriesToView[count++] = pdbEntry;
+          }
+          SequenceI[] selectedSeqs = selectedSeqsToView
+                  .toArray(new SequenceI[selectedSeqsToView.size()]);
+          sViewer = launchStructureViewer(ssm, pdbEntriesToView, ap,
+                  selectedSeqs);
+        }
+        else if (currentView == VIEWS_LOCAL_PDB)
+        {
+          int[] selectedRows = tbl_local_pdb.getSelectedRows();
+          PDBEntry[] pdbEntriesToView = new PDBEntry[selectedRows.length];
+          int count = 0;
+          int pdbIdColIndex = tbl_local_pdb.getColumn("PDB Id")
+                  .getModelIndex();
+          int refSeqColIndex = tbl_local_pdb.getColumn("Ref Sequence")
+                  .getModelIndex();
+          List<SequenceI> selectedSeqsToView = new ArrayList<>();
+          for (int row : selectedRows)
+          {
+            PDBEntry pdbEntry = (PDBEntry) tbl_local_pdb.getValueAt(row,
+                    pdbIdColIndex);
+            pdbEntriesToView[count++] = pdbEntry;
+            SequenceI selectedSeq = (SequenceI) tbl_local_pdb
+                    .getValueAt(row, refSeqColIndex);
+            selectedSeqsToView.add(selectedSeq);
+          }
+          SequenceI[] selectedSeqs = selectedSeqsToView
+                  .toArray(new SequenceI[selectedSeqsToView.size()]);
+          sViewer = launchStructureViewer(ssm, pdbEntriesToView, ap,
+                  selectedSeqs);
+        }
+        else if (currentView == VIEWS_ENTER_ID)
+        {
+          SequenceI userSelectedSeq = ((AssociateSeqOptions) idInputAssSeqPanel
+                  .getCmb_assSeq().getSelectedItem()).getSequence();
+          if (userSelectedSeq != null)
+          {
+            selectedSequence = userSelectedSeq;
+          }
+          String pdbIdStr = txt_search.getText();
+          PDBEntry pdbEntry = selectedSequence.getPDBEntry(pdbIdStr);
+          if (pdbEntry == null)
+          {
+            pdbEntry = new PDBEntry();
+            if (pdbIdStr.split(":").length > 1)
+            {
+              pdbEntry.setId(pdbIdStr.split(":")[0]);
+              pdbEntry.setChainCode(pdbIdStr.split(":")[1].toUpperCase());
+            }
+            else
+            {
+              pdbEntry.setId(pdbIdStr);
+            }
+            pdbEntry.setType(PDBEntry.Type.PDB);
+            selectedSequence.getDatasetSequence().addPDBId(pdbEntry);
+          }
+
+          PDBEntry[] pdbEntriesToView = new PDBEntry[] { pdbEntry };
+          sViewer = launchStructureViewer(ssm, pdbEntriesToView, ap,
+                  new SequenceI[]
+                  { selectedSequence });
+        }
+        else if (currentView == VIEWS_FROM_FILE)
+        {
+          SequenceI userSelectedSeq = ((AssociateSeqOptions) fileChooserAssSeqPanel
+                  .getCmb_assSeq().getSelectedItem()).getSequence();
+          if (userSelectedSeq != null)
+          {
+            selectedSequence = userSelectedSeq;
+          }
+          PDBEntry fileEntry = new AssociatePdbFileWithSeq()
+                  .associatePdbWithSeq(selectedPdbFileName,
+                          DataSourceType.FILE, selectedSequence, true,
+                          Desktop.instance);
+
+          sViewer = launchStructureViewer(
+                  ssm, new PDBEntry[]
+                  { fileEntry }, ap,
+                  new SequenceI[]
+                  { selectedSequence });
+        }
+        SwingUtilities.invokeLater(new Runnable()
+        {
+          @Override
+          public void run()
+          {
+            closeAction(preferredHeight);
+            mainFrame.dispose();
+          }
+        });
+      }
+    };
+    Thread runner = new Thread(viewStruc);
+    runner.start();
+    if (waitUntilFinished)
+    {
+      while (sViewer == null ? runner.isAlive()
+              : (sViewer.sview == null ? true
+                      : !sViewer.sview.hasMapping()))
+      {
+        try
+        {
+          Thread.sleep(300);
+        } catch (InterruptedException ie)
+        {
+
+        }
+      }
+    }
+  }
+
+  private PDBEntry getFindEntry(String id, Vector<PDBEntry> pdbEntries)
+  {
+    Objects.requireNonNull(id);
+    Objects.requireNonNull(pdbEntries);
+    PDBEntry foundEntry = null;
+    for (PDBEntry entry : pdbEntries)
+    {
+      if (entry.getId().equalsIgnoreCase(id))
+      {
+        return entry;
+      }
+    }
+    return foundEntry;
+  }
+
+  /**
+   * @param ssm
+   * @return targetted structure view (new or existing) configured according to
+   *         superpose checkbox
+   */
+  public StructureViewer getTargetedStructureViewer(
+          StructureSelectionManager ssm)
+  {
+    Object _sv = targetView.getSelectedItem();
+    StructureViewer sv;
+    if (_sv == null)
+    {
+      sv = new StructureViewer(ssm);
+    } else {
+      sv = (StructureViewer) _sv;
+    }
+    sv.setSuperpose(chk_superpose.isSelected());
+    return sv;
+  }
+  private StructureViewer launchStructureViewer(
+          StructureSelectionManager ssm,
+          final PDBEntry[] pdbEntriesToView,
+          final AlignmentPanel alignPanel, SequenceI[] sequences)
+  {
+    long progressId = sequences.hashCode();
+    setProgressBar(MessageManager
+            .getString("status.launching_3d_structure_viewer"), progressId);
+    final StructureViewer sViewer = getTargetedStructureViewer(ssm);
+    sViewer.setSuperpose(chk_superpose.isSelected());
+
+    setProgressBar(null, progressId);
+    if (SiftsSettings.isMapWithSifts())
+    {
+      List<SequenceI> seqsWithoutSourceDBRef = new ArrayList<>();
+      int p = 0;
+      // TODO: skip PDBEntry:Sequence pairs where PDBEntry doesn't look like a
+      // real PDB ID. For moment, we can also safely do this if there is already
+      // a known mapping between the PDBEntry and the sequence.
+      for (SequenceI seq : sequences)
+      {
+        PDBEntry pdbe = pdbEntriesToView[p++];
+        if (pdbe != null && pdbe.getFile() != null)
+        {
+          StructureMapping[] smm = ssm.getMapping(pdbe.getFile());
+          if (smm != null && smm.length > 0)
+          {
+            for (StructureMapping sm : smm)
+            {
+              if (sm.getSequence() == seq)
+              {
+                continue;
+              }
+            }
+          }
+        }
+        if (seq.getPrimaryDBRefs().size() == 0)
+        {
+          seqsWithoutSourceDBRef.add(seq);
+          continue;
+        }
+      }
+      if (!seqsWithoutSourceDBRef.isEmpty())
+      {
+        int y = seqsWithoutSourceDBRef.size();
+        setProgressBar(MessageManager.formatMessage(
+                "status.fetching_dbrefs_for_sequences_without_valid_refs",
+                y), progressId);
+        SequenceI[] seqWithoutSrcDBRef = new SequenceI[y];
+        int x = 0;
+        for (SequenceI fSeq : seqsWithoutSourceDBRef)
+        {
+          seqWithoutSrcDBRef[x++] = fSeq;
+        }
+
+        DBRefFetcher dbRefFetcher = new DBRefFetcher(seqWithoutSrcDBRef);
+        dbRefFetcher.fetchDBRefs(true);
+
+        setProgressBar("Fetch complete.", progressId); // todo i18n
+      }
+    }
+    if (pdbEntriesToView.length > 1)
+    {
+      setProgressBar(MessageManager.getString(
+              "status.fetching_3d_structures_for_selected_entries"),
+              progressId);
+      sViewer.viewStructures(pdbEntriesToView, sequences, alignPanel);
+    }
+    else
+    {
+      setProgressBar(MessageManager.formatMessage(
+              "status.fetching_3d_structures_for",
+              pdbEntriesToView[0].getId()),progressId);
+      sViewer.viewStructures(pdbEntriesToView[0], sequences, alignPanel);
+    }
+    setProgressBar(null, progressId);
+    // remember the last viewer we used...
+    lastTargetedView = sViewer;
+    return sViewer;
+  }
+
+  /**
+   * Populates the combo-box used in associating manually fetched structures to
+   * a unique sequence when more than one sequence selection is made.
+   */
+  @Override
+  public void populateCmbAssociateSeqOptions(
+          JComboBox<AssociateSeqOptions> cmb_assSeq,
+          JLabel lbl_associateSeq)
   {
-    return structuresDiscovered;
+    cmb_assSeq.removeAllItems();
+    cmb_assSeq.addItem(
+            new AssociateSeqOptions("-Select Associated Seq-", null));
+    lbl_associateSeq.setVisible(false);
+    if (selectedSequences.length > 1)
+    {
+      for (SequenceI seq : selectedSequences)
+      {
+        cmb_assSeq.addItem(new AssociateSeqOptions(seq));
+      }
+    }
+    else
+    {
+      String seqName = selectedSequence.getDisplayId(false);
+      seqName = seqName.length() <= 40 ? seqName : seqName.substring(0, 39);
+      lbl_associateSeq.setText(seqName);
+      lbl_associateSeq.setVisible(true);
+      cmb_assSeq.setVisible(false);
+    }
   }
 
-  public void setStructuresDiscovered(boolean structuresDiscovered)
+  public boolean isStructuresDiscovered()
   {
-    this.structuresDiscovered = structuresDiscovered;
+    return discoveredStructuresSet != null
+            && !discoveredStructuresSet.isEmpty();
   }
 
-  public Collection<PDBResponseSummary> getDiscoveredStructuresSet()
+  public Collection<FTSData> getDiscoveredStructuresSet()
   {
     return discoveredStructuresSet;
   }
+
+  @Override
+  protected void txt_search_ActionPerformed()
+  {
+    new Thread()
+    {
+      @Override
+      public void run()
+      {
+        errorWarning.setLength(0);
+        isValidPBDEntry = false;
+        if (txt_search.getText().length() > 0)
+        {
+          String searchTerm = txt_search.getText().toLowerCase();
+          searchTerm = searchTerm.split(":")[0];
+          // System.out.println(">>>>> search term : " + searchTerm);
+          List<FTSDataColumnI> wantedFields = new ArrayList<>();
+          FTSRestRequest pdbRequest = new FTSRestRequest();
+          pdbRequest.setAllowEmptySeq(false);
+          pdbRequest.setResponseSize(1);
+          pdbRequest.setFieldToSearchBy("(pdb_id:");
+          pdbRequest.setWantedFields(wantedFields);
+          pdbRequest.setSearchTerm(searchTerm + ")");
+          pdbRequest.setAssociatedSequence(selectedSequence);
+          pdbRestCleint = PDBFTSRestClient.getInstance();
+          wantedFields.add(pdbRestCleint.getPrimaryKeyColumn());
+          FTSRestResponse resultList;
+          try
+          {
+            resultList = pdbRestCleint.executeRequest(pdbRequest);
+          } catch (Exception e)
+          {
+            errorWarning.append(e.getMessage());
+            return;
+          } finally
+          {
+            validateSelections();
+          }
+          if (resultList.getSearchSummary() != null
+                  && resultList.getSearchSummary().size() > 0)
+          {
+            isValidPBDEntry = true;
+          }
+        }
+        validateSelections();
+      }
+    }.start();
+  }
+
+  @Override
+  public void tabRefresh()
+  {
+    if (selectedSequences != null)
+    {
+      Thread refreshThread = new Thread(new Runnable()
+      {
+        @Override
+        public void run()
+        {
+          fetchStructuresMetaData();
+          filterResultSet(
+                  ((FilterOption) cmb_filterOption.getSelectedItem())
+                          .getValue());
+        }
+      });
+      refreshThread.start();
+    }
+  }
+
+  public class PDBEntryTableModel extends AbstractTableModel
+  {
+    String[] columns = { "Ref Sequence", "PDB Id", "Chain", "Type",
+        "File" };
+
+    private List<CachedPDB> pdbEntries;
+
+    public PDBEntryTableModel(List<CachedPDB> pdbEntries)
+    {
+      this.pdbEntries = new ArrayList<>(pdbEntries);
+    }
+
+    @Override
+    public String getColumnName(int columnIndex)
+    {
+      return columns[columnIndex];
+    }
+
+    @Override
+    public int getRowCount()
+    {
+      return pdbEntries.size();
+    }
+
+    @Override
+    public int getColumnCount()
+    {
+      return columns.length;
+    }
+
+    @Override
+    public boolean isCellEditable(int row, int column)
+    {
+      return false;
+    }
+
+    @Override
+    public Object getValueAt(int rowIndex, int columnIndex)
+    {
+      Object value = "??";
+      CachedPDB entry = pdbEntries.get(rowIndex);
+      switch (columnIndex)
+      {
+      case 0:
+        value = entry.getSequence();
+        break;
+      case 1:
+        value = entry.getPdbEntry();
+        break;
+      case 2:
+        value = entry.getPdbEntry().getChainCode() == null ? "_"
+                : entry.getPdbEntry().getChainCode();
+        break;
+      case 3:
+        value = entry.getPdbEntry().getType();
+        break;
+      case 4:
+        value = entry.getPdbEntry().getFile();
+        break;
+      }
+      return value;
+    }
+
+    @Override
+    public Class<?> getColumnClass(int columnIndex)
+    {
+      return columnIndex == 0 ? SequenceI.class : PDBEntry.class;
+    }
+
+    public CachedPDB getPDBEntryAt(int row)
+    {
+      return pdbEntries.get(row);
+    }
+
+  }
+
+  private class CachedPDB
+  {
+    private SequenceI sequence;
+
+    private PDBEntry pdbEntry;
+
+    public CachedPDB(SequenceI sequence, PDBEntry pdbEntry)
+    {
+      this.sequence = sequence;
+      this.pdbEntry = pdbEntry;
+    }
+
+    public SequenceI getSequence()
+    {
+      return sequence;
+    }
+
+    public PDBEntry getPdbEntry()
+    {
+      return pdbEntry;
+    }
+
+  }
+
+  private IProgressIndicator progressBar;
+
+  @Override
+  public void setProgressBar(String message, long id)
+  {
+    progressBar.setProgressBar(message, id);
+  }
+
+  @Override
+  public void registerHandler(long id, IProgressIndicatorHandler handler)
+  {
+    progressBar.registerHandler(id, handler);
+  }
+
+  @Override
+  public boolean operationInProgress()
+  {
+    return progressBar.operationInProgress();
+  }
+
+  public JalviewStructureDisplayI getOpenedStructureViewer()
+  {
+    return sViewer == null ? null : sViewer.sview;
+  }
 }