Package org.gvt.action

Source Code of org.gvt.action.UpdatePathwayAction

package org.gvt.action;

import org.biopax.paxtools.model.Model;
import org.biopax.paxtools.model.level2.pathway;
import org.eclipse.gef.ui.parts.ScrollingGraphicalViewer;
import org.eclipse.jface.action.Action;
import org.eclipse.jface.dialogs.MessageDialog;
import org.eclipse.jface.resource.ImageDescriptor;
import org.eclipse.swt.graphics.Color;
import org.gvt.ChisioMain;
import org.gvt.GraphAnimation;
import org.gvt.editpart.ChsScalableRootEditPart;
import org.gvt.figure.HighlightLayer;
import org.gvt.model.biopaxl2.BioPAXEdge;
import org.gvt.model.biopaxl2.BioPAXGraph;
import org.gvt.model.biopaxl2.IBioPAXNode;
import org.gvt.util.BioPAXReader;

import java.util.HashMap;
import java.util.Map;

/**
* @author Ozgun Babur
*
* Copyright: Bilkent Center for Bioinformatics, 2007 - present
*/
public class UpdatePathwayAction extends Action
{
  private ChisioMain main;

  /**
   * If true, then all open views will be updated. Otherwise only the current view will be
   * updated.
   */
  private boolean allOpenPathways;

  /**
   * Parameter for recreating root graph.
   */
  private boolean withRoot;

  public UpdatePathwayAction(ChisioMain main, boolean allOpenPathways)
  {
    super(allOpenPathways ? "Update All Open Pathways" : "Update Pathway");

    if (allOpenPathways)
    {
      setImageDescriptor(ImageDescriptor.createFromFile(ChisioMain.class, "icon/pathway-update-all.png"));     
    }

    this.setToolTipText(this.getText());
    this.main = main;
    this.allOpenPathways = allOpenPathways;
    withRoot = allOpenPathways;
  }

  // Replace graph
  private void updateViewerContent(ScrollingGraphicalViewer viewer)
  {
    BioPAXGraph graph = (BioPAXGraph) viewer.getContents().getModel();

    // Updating is supported only for mechanistic views
    if (!graph.isMechanistic()) return;

    // Remember highlighted object's original nodes (members of chisio root graph)

    Map<Integer, Color> highlightMap = new HashMap<Integer, Color>();

    for (Object o : graph.getNodes())
    {
      IBioPAXNode node = (IBioPAXNode) o;
      if (node.isHighlighted())
      {
        highlightMap.put(node.getIDHash(), node.getHighlightColor());
      }
    }

    for (Object o : graph.getEdges())
    {
      BioPAXEdge edge = (BioPAXEdge) o;
      if (edge.isHighlighted())
      {
        highlightMap.put(edge.getIDHash(), edge.getHighlightColor());
      }
    }

    // Reset highlight

    HighlightLayer hLayer = (HighlightLayer)
      ((ChsScalableRootEditPart) viewer.getRootEditPart()).getLayer(
        HighlightLayer.HIGHLIGHT_LAYER);

    hLayer.removeAll();
    hLayer.highlighted.clear();

    viewer.deselectAll();

    // Record layout
    graph.recordLayout();

    // Create updated graph
    pathway p = graph.getPathway();
    BioPAXGraph newGraph = main.getRootGraph().excise(p);
    newGraph.setName(p.getNAME());
    newGraph.setAsRoot();

    // Replace the graph
    viewer.setContents(newGraph);

    // Use same layout
    boolean layedout = newGraph.fetchLayout();

    if (!layedout)
    {
      new CoSELayoutAction(main).run();
    }

    viewer.deselectAll();
    GraphAnimation.run(viewer);

    // Recover highlights

    for (Object o : newGraph.getNodes())
    {
      IBioPAXNode node = (IBioPAXNode) o;
      if (highlightMap.containsKey(node.getIDHash()))
      {
        node.setHighlightColor(highlightMap.get(node.getIDHash()));
        node.setHighlight(true);
      }
    }

    for (Object o : newGraph.getEdges())
    {
      BioPAXEdge edge = (BioPAXEdge) o;
      if (highlightMap.containsKey(edge.getIDHash()))
      {
        edge.setHighlightColor(highlightMap.get(edge.getIDHash()));
        edge.setHighlight(true);
      }
    }
  }

  private void updateRoot()
  {
    BioPAXGraph root = (BioPAXGraph) new BioPAXReader(main.getOwlModel()).readXMLFile(null);
    main.setRootGraph(root);
  }

  public void run()
  {
    Model model = main.getOwlModel();

    if (model == null)
    {
      MessageDialog.openError(main.getShell(), "Error!",
        "Load or query a BioPAX model first!");

      return;
    }

    if (withRoot)
    {
      updateRoot();
    }

    if (allOpenPathways)
    {
      for (ScrollingGraphicalViewer viewer : main.getTabToViewerMap().values())
      {
        updateViewerContent(viewer);
      }
    }
    else
    {
      updateViewerContent(main.getViewer());
    }
  }
}
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