Merge branch 'develop' into feature/JAL-3390hideUnmappedStructure
[jalview.git] / src / jalview / structures / models / AAStructureBindingModel.java
index 2528286..47e7f30 100644 (file)
@@ -20,7 +20,9 @@
  */
 package jalview.structures.models;
 
+import jalview.api.AlignViewportI;
 import jalview.api.AlignmentViewPanel;
+import jalview.api.FeatureRenderer;
 import jalview.api.SequenceRenderer;
 import jalview.api.StructureSelectionManagerProvider;
 import jalview.api.structures.JalviewStructureDisplayI;
@@ -28,12 +30,14 @@ import jalview.datamodel.AlignmentI;
 import jalview.datamodel.HiddenColumns;
 import jalview.datamodel.PDBEntry;
 import jalview.datamodel.SequenceI;
+import jalview.ext.rbvi.chimera.AtomSpecModel;
+import jalview.ext.rbvi.chimera.ChimeraCommands;
 import jalview.io.DataSourceType;
+import jalview.renderer.seqfeatures.FeatureColourFinder;
 import jalview.schemes.ColourSchemeI;
 import jalview.structure.AtomSpec;
 import jalview.structure.StructureListener;
 import jalview.structure.StructureMapping;
-import jalview.structure.StructureMappingcommandSet;
 import jalview.structure.StructureSelectionManager;
 import jalview.util.Comparison;
 import jalview.util.MessageManager;
@@ -42,7 +46,11 @@ import java.awt.Color;
 import java.util.ArrayList;
 import java.util.Arrays;
 import java.util.BitSet;
+import java.util.Collections;
+import java.util.Iterator;
+import java.util.LinkedHashMap;
 import java.util.List;
+import java.util.Map;
 
 /**
  * 
@@ -94,6 +102,17 @@ public abstract class AAStructureBindingModel
 
   public String fileLoadingError;
 
+  private boolean showAlignmentOnly;
+
+  /*
+   * a list of chains "pdbid:chainid" to show in the viewer;
+   * empty means show all
+   */
+  // TODO make private once showStructures() deals with this
+  protected List<String> chainsToShow;
+
+  private boolean hideHiddenRegions;
+
   /**
    * Data bean class to simplify parameterisation in superposeStructures
    */
@@ -134,6 +153,7 @@ public abstract class AAStructureBindingModel
   {
     this.ssm = ssm;
     this.sequence = seqs;
+    chainsToShow = new ArrayList<>();
   }
 
   /**
@@ -153,6 +173,8 @@ public abstract class AAStructureBindingModel
     this.nucleotide = Comparison.isNucleotide(sequenceIs);
     this.pdbEntry = pdbentry;
     this.protocol = protocol;
+    chainsToShow = new ArrayList<>();
+
     resolveChains();
   }
 
@@ -355,8 +377,8 @@ public abstract class AAStructureBindingModel
               { Integer.valueOf(pe).toString() }));
     }
     final String nullChain = "TheNullChain";
-    List<SequenceI> s = new ArrayList<SequenceI>();
-    List<String> c = new ArrayList<String>();
+    List<SequenceI> s = new ArrayList<>();
+    List<String> c = new ArrayList<>();
     if (getChains() == null)
     {
       setChains(new String[getPdbCount()][]);
@@ -425,8 +447,8 @@ public abstract class AAStructureBindingModel
   public synchronized PDBEntry[] addSequenceAndChain(PDBEntry[] pdbe,
           SequenceI[][] seq, String[][] chns)
   {
-    List<PDBEntry> v = new ArrayList<PDBEntry>();
-    List<int[]> rtn = new ArrayList<int[]>();
+    List<PDBEntry> v = new ArrayList<>();
+    List<int[]> rtn = new ArrayList<>();
     for (int i = 0; i < getPdbCount(); i++)
     {
       v.add(getPdbEntry(i));
@@ -771,8 +793,8 @@ public abstract class AAStructureBindingModel
 
   public abstract void setBackgroundColour(Color col);
 
-  protected abstract StructureMappingcommandSet[] getColourBySequenceCommands(
-          String[] files, SequenceRenderer sr, AlignmentViewPanel avp);
+  protected abstract String[] getColourBySequenceCommands(
+          String[] files, AlignmentViewPanel avp);
 
   /**
    * returns the current sequenceRenderer that should be used to colour the
@@ -786,33 +808,46 @@ public abstract class AAStructureBindingModel
           AlignmentViewPanel alignment);
 
   protected abstract void colourBySequence(
-          StructureMappingcommandSet[] colourBySequenceCommands);
+          String[] colourBySequenceCommands);
 
   public abstract void colourByChain();
 
   public abstract void colourByCharge();
 
   /**
-   * colour any structures associated with sequences in the given alignment
-   * using the getFeatureRenderer() and getSequenceRenderer() renderers but only
-   * if colourBySequence is enabled.
+   * Recolours the displayed structures, if they are coloured by sequence, or
+   * 'show only visible alignment' is selected. This supports updating structure
+   * colours on either change of alignment colours, or change to the visible
+   * region of the alignment.
    */
-  public void colourBySequence(AlignmentViewPanel alignmentv)
+  public void updateStructureColours(AlignmentViewPanel alignmentv)
   {
-    if (!colourBySequence || !isLoadingFinished())
+    if (!isLoadingFinished())
     {
       return;
     }
+
+    /*
+     * if structure is not coloured by sequence, but restricted to the alignment,
+     * then redraw it (but don't recolour it) in case hidden regions have changed
+     * (todo: specific messaging for change of hidden region only)
+     */
+    if (!colourBySequence)
+    {
+      if (isShowAlignmentOnly())
+      {
+        showStructures(alignmentv.getAlignViewport(), false);
+      }
+      return;
+    }
     if (getSsm() == null)
     {
       return;
     }
     String[] files = getStructureFiles();
 
-    SequenceRenderer sr = getSequenceRenderer(alignmentv);
-
-    StructureMappingcommandSet[] colourBySequenceCommands = getColourBySequenceCommands(
-            files, sr, alignmentv);
+    String[] colourBySequenceCommands = getColourBySequenceCommands(
+            files, alignmentv);
     colourBySequence(colourBySequenceCommands);
   }
 
@@ -823,4 +858,321 @@ public abstract class AAStructureBindingModel
 
   public abstract jalview.api.FeatureRenderer getFeatureRenderer(
           AlignmentViewPanel alignment);
+
+  /**
+   * Sets the flag for whether only mapped visible residues in the alignment
+   * should be visible in the structure viewer
+   * 
+   * @param b
+   */
+  public void setShowAlignmentOnly(boolean b)
+  {
+    showAlignmentOnly = b;
+  }
+
+  /**
+   * Answers true if only residues mapped to the alignment should be shown in the
+   * structure viewer, else false
+   * 
+   * @return
+   */
+  public boolean isShowAlignmentOnly()
+  {
+    return showAlignmentOnly;
+  }
+
+  /**
+   * Sets the flag for hiding regions of structure which are hidden in the
+   * alignment (only applies when the structure viewer is restricted to the
+   * alignment only)
+   * 
+   * @param b
+   */
+  public void setHideHiddenRegions(boolean b)
+  {
+    hideHiddenRegions = b;
+  }
+
+  /**
+   * Answers true if regions hidden in the alignment should also be hidden in the
+   * structure viewer, else false (only applies when the structure viewer is
+   * restricted to the alignment only)
+   * 
+   * @return
+   */
+  public boolean isHideHiddenRegions()
+  {
+    return hideHiddenRegions;
+  }
+
+  /**
+   * Shows the structures in the viewer, without changing their colouring. This is
+   * to support toggling of whether the whole structure is shown, or only residues
+   * mapped to visible regions of the alignment.
+   * 
+   * @param alignViewportI
+   * @param refocus
+   *                         if true, refit the display to the viewer
+   */
+  public void showStructures(AlignViewportI alignViewportI, boolean refocus)
+  {
+    // override with implementation
+  }
+
+  @Override
+  public void updateColours(Object source)
+  {
+    AlignmentViewPanel ap = (AlignmentViewPanel) source;
+    // ignore events from panels not used to colour this view
+    if (!getViewer().isUsedforcolourby(ap))
+    {
+      return;
+    }
+    if (!isLoadingFromArchive())
+    {
+      updateStructureColours(ap);
+    }
+  }
+
+  /**
+   * Sets the list of chains to display (as "pdbid:chain"), where an empty list
+   * means show all
+   * 
+   * @param chains
+   */
+  public void setChainsToShow(List<String> chains)
+  {
+    chainsToShow = chains;
+  }
+
+  /**
+   * Answers true if the specified structure and chain are selected to be shown in
+   * the viewer, else false
+   * 
+   * @param pdbId
+   * @param chainId
+   * @return
+   */
+  protected boolean isShowChain(String pdbId, String chainId)
+  {
+    if (chainsToShow.isEmpty())
+    {
+      return true;
+    }
+    return chainsToShow.contains(pdbId + ":" + chainId);
+  }
+
+  @Override
+  public abstract String[] getStructureFiles();
+
+  /**
+   * Builds a model of residues mapped from sequences to show on structure, taking
+   * into account user choices of
+   * <ul>
+   * <li>which chains are shown</li>
+   * <li>whether all structure is shown, or only that mapped to the alignment</li>
+   * <li>whether hidden regions of the alignment are hidden (excluded) or grayed
+   * out (included)</li>
+   * </ul>
+   * 
+   * @param av
+   * @return
+   */
+  protected AtomSpecModel getShownResidues(AlignViewportI av)
+  {
+    AlignmentI alignment = av.getAlignment();
+    final int width = alignment.getWidth();
+  
+    String[] files = getStructureFiles();
+  
+    AtomSpecModel model = new AtomSpecModel();
+  
+    for (int pdbfnum = 0; pdbfnum < files.length; pdbfnum++)
+    {
+      StructureMapping[] mappings = getSsm().getMapping(files[pdbfnum]);
+  
+      /*
+       * Find the first mapped sequence (if any) for this PDB entry which is in
+       * the alignment
+       */
+      final int seqCountForPdbFile = getSequence()[pdbfnum].length;
+      for (int s = 0; s < seqCountForPdbFile; s++)
+      {
+        for (StructureMapping mapping : mappings)
+        {
+          final SequenceI theSequence = getSequence()[pdbfnum][s];
+          if (mapping.getSequence() == theSequence
+                  && alignment.findIndex(theSequence) > -1)
+          {
+            String chainCd = mapping.getChain();
+            if (!isShowChain(mapping.getPdbId(), chainCd))
+            {
+              continue;
+            }
+            Iterator<int[]> visible;
+            if (isShowAlignmentOnly() && isHideHiddenRegions())
+            {
+              visible = alignment.getHiddenColumns()
+                    .getVisContigsIterator(0, width, true);
+            }
+            else
+            {
+              visible = Collections.singletonList(new int[] { 0, width })
+                      .iterator();
+            }
+            while (visible.hasNext())
+            {
+              int[] visibleRegion = visible.next();
+              int seqStartPos = theSequence.findPosition(visibleRegion[0]);
+              int seqEndPos = theSequence.findPosition(visibleRegion[1]);
+              List<int[]> residueRanges = mapping
+                      .getPDBResNumRanges(seqStartPos, seqEndPos);
+              if (!residueRanges.isEmpty())
+              {
+                for (int[] range : residueRanges)
+                {
+                  model.addRange(pdbfnum, range[0], range[1], chainCd);
+                }
+              }
+            }
+          }
+        }
+      }
+    }
+  
+    return model;
+  }
+
+  /**
+   * Answers a default structure model specification which is simply the string
+   * form of the model number. Override if needed to specify submodels.
+   * 
+   * @param model
+   * @return
+   */
+  public String getModelSpec(int model)
+  {
+    return String.valueOf(model);
+  }
+
+  /**
+   * Build a data structure which records contiguous subsequences for each colour.
+   * From this we can easily generate the Chimera command for colour by sequence.
+   * 
+   * <pre>
+   * Color
+   *     Model number
+   *         Chain
+   *             list of start/end ranges
+   * </pre>
+   * 
+   * Ordering is by order of addition (for colours and positions), natural
+   * ordering (for models and chains)
+   * 
+   * @param viewPanel
+   * @return
+   */
+  public Map<Object, AtomSpecModel> buildColoursMap(
+          AlignmentViewPanel viewPanel)
+  {
+    FeatureRenderer fr = viewPanel.getFeatureRenderer();
+    FeatureColourFinder finder = new FeatureColourFinder(fr);
+    AlignViewportI viewport = viewPanel.getAlignViewport();
+    HiddenColumns cs = viewport.getAlignment().getHiddenColumns();
+    AlignmentI al = viewport.getAlignment();
+    SequenceRenderer sr = getSequenceRenderer(viewPanel);
+    String[] files = getStructureFiles();
+    
+    Map<Object, AtomSpecModel> colourMap = new LinkedHashMap<>();
+    Color lastColour = null;
+  
+    for (int pdbfnum = 0; pdbfnum < files.length; pdbfnum++)
+    {
+      StructureMapping[] mapping = ssm.getMapping(files[pdbfnum]);
+  
+      if (mapping == null || mapping.length < 1)
+      {
+        continue;
+      }
+  
+      int startPos = -1, lastPos = -1;
+      String lastChain = "";
+      for (int s = 0; s < sequence[pdbfnum].length; s++)
+      {
+        for (int sp, m = 0; m < mapping.length; m++)
+        {
+          final SequenceI seq = sequence[pdbfnum][s];
+          if (mapping[m].getSequence() == seq
+                  && (sp = al.findIndex(seq)) > -1)
+          {
+            SequenceI asp = al.getSequenceAt(sp);
+            for (int r = 0; r < asp.getLength(); r++)
+            {
+              // no mapping to gaps in sequence
+              if (Comparison.isGap(asp.getCharAt(r)))
+              {
+                continue;
+              }
+              int pos = mapping[m].getPDBResNum(asp.findPosition(r));
+  
+              if (pos < 1 || pos == lastPos)
+              {
+                continue;
+              }
+  
+              Color colour = sr.getResidueColour(seq, r, finder);
+  
+              /*
+               * hidden regions are shown gray or, optionally, ignored
+               */
+              if (!cs.isVisible(r))
+              {
+                if (hideHiddenRegions)
+                {
+                  continue;
+                }
+                else
+                {
+                  colour = Color.GRAY;
+                }
+              }
+  
+              final String chain = mapping[m].getChain();
+  
+              /*
+               * Just keep incrementing the end position for this colour range
+               * _unless_ colour, PDB model or chain has changed, or there is a
+               * gap in the mapped residue sequence
+               */
+              final boolean newColour = !colour.equals(lastColour);
+              final boolean nonContig = lastPos + 1 != pos;
+              final boolean newChain = !chain.equals(lastChain);
+              if (newColour || nonContig || newChain)
+              {
+                if (startPos != -1)
+                {
+                  ChimeraCommands.addAtomSpecRange(colourMap, lastColour,
+                          pdbfnum, startPos,
+                          lastPos, lastChain);
+                }
+                startPos = pos;
+              }
+              lastColour = colour;
+              lastPos = pos;
+              lastChain = chain;
+            }
+            // final colour range
+            if (lastColour != null)
+            {
+              ChimeraCommands.addAtomSpecRange(colourMap, lastColour,
+                      pdbfnum,
+                      startPos, lastPos, lastChain);
+            }
+            // break;
+          }
+        }
+      }
+    }
+    return colourMap;
+  }
 }