--- /dev/null
+/*
+ * Jalview - A Sequence Alignment Editor and Viewer ($$Version-Rel$$)
+ * Copyright (C) $$Year-Rel$$ The Jalview Authors
+ *
+ * This file is part of Jalview.
+ *
+ * Jalview is free software: you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation, either version 3
+ * of the License, or (at your option) any later version.
+ *
+ * Jalview is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty
+ * of MERCHANTABILITY or FITNESS FOR A PARTICULAR
+ * PURPOSE. See the GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with Jalview. If not, see <http://www.gnu.org/licenses/>.
+ * The Jalview Authors are detailed in the 'AUTHORS' file.
+ */
+package jalview.workers;
+
+import jalview.datamodel.AlignmentAnnotation;
+import jalview.datamodel.AlignmentI;
+import jalview.gui.AlignFrame;
+import jalview.gui.AlignmentPanel;
+import jalview.gui.FeatureRenderer;
+
+import java.util.ArrayList;
+import java.util.List;
+
+/**
+ * A class to create and update one or more alignment annotations, given a
+ * 'calculator'.
+ *
+ */
+class AnnotationWorker extends AlignCalcWorker
+{
+ /*
+ * the provider of the annotation calculations
+ */
+ AnnotationProviderI counter;
+
+ /**
+ * Constructor
+ *
+ * @param af
+ * @param counter
+ */
+ public AnnotationWorker(AlignFrame af, AnnotationProviderI counter)
+ {
+ super(af.getViewport(), af.alignPanel);
+ ourAnnots = new ArrayList<AlignmentAnnotation>();
+ this.counter = counter;
+ calcMan.registerWorker(this);
+ }
+
+ @Override
+ public void run()
+ {
+ try
+ {
+ calcMan.notifyStart(this);
+
+ while (!calcMan.notifyWorking(this))
+ {
+ try
+ {
+ Thread.sleep(200);
+ } catch (InterruptedException ex)
+ {
+ ex.printStackTrace();
+ }
+ }
+ if (alignViewport.isClosed())
+ {
+ abortAndDestroy();
+ return;
+ }
+
+ removeAnnotations();
+ AlignmentI alignment = alignViewport.getAlignment();
+ if (alignment != null)
+ {
+ try
+ {
+ List<AlignmentAnnotation> anns = counter.calculateAnnotation(
+ alignment, new FeatureRenderer((AlignmentPanel) ap));
+ for (AlignmentAnnotation ann : anns)
+ {
+ ann.showAllColLabels = true;
+ ann.graph = AlignmentAnnotation.BAR_GRAPH;
+ ourAnnots.add(ann);
+ alignment.addAnnotation(ann);
+ }
+ } catch (IndexOutOfBoundsException x)
+ {
+ // probable race condition. just finish and return without any fuss.
+ return;
+ }
+ }
+ } catch (OutOfMemoryError error)
+ {
+ ap.raiseOOMWarning("calculating annotations", error);
+ calcMan.workerCannotRun(this);
+ } finally
+ {
+ calcMan.workerComplete(this);
+ }
+
+ if (ap != null)
+ {
+ ap.adjustAnnotationHeight();
+ ap.paintAlignment(true);
+ }
+
+ }
+
+ /**
+ * Remove all our annotations before re-calculating them
+ */
+ void removeAnnotations()
+ {
+ for (AlignmentAnnotation ann : ourAnnots)
+ {
+ alignViewport.getAlignment().deleteAnnotation(ann);
+ }
+ ourAnnots.clear();
+ }
+
+ @Override
+ public void updateAnnotation()
+ {
+ // do nothing
+ }
+}