code: /*--------------------------------------------------------------*
    Copyright (C) 2006-2020 OpenSim Ltd.
  
    This file is distributed WITHOUT ANY WARRANTY. See the file
    'License' for details on this and other legal matters.
  *--------------------------------------------------------------*/
  
  package org.omnetpp.scave.actions;
  
  import org.eclipse.core.runtime.CoreException;
  import org.eclipse.jface.viewers.ISelection;
  import org.eclipse.jface.viewers.IStructuredSelection;
  import org.omnetpp.scave.ScaveImages;
  import org.omnetpp.scave.ScavePlugin;
  import org.omnetpp.scave.editors.ChartScriptEditor;
  import org.omnetpp.scave.editors.ScaveEditor;
  import org.omnetpp.scave.editors.ui.ConfigureChartDialog;
  import org.omnetpp.scave.model.Chart;
  
  /**
   * Opens an edit dialog for the selected chart
   */
  public class ConfigureChartAction extends AbstractScaveAction {
  
      public ConfigureChartAction() {
          setText("Configure Chart...");
          setImageDescriptor(ScavePlugin.getImageDescriptor(ScaveImages.IMG_ETOOL16_COGWHEEL));
      }
  
      @Override
      protected void doRun(final ScaveEditor scaveEditor, ISelection selection) throws CoreException {
          if (isApplicable(scaveEditor, selection)) {
              Chart editedChart = getEditedChart(scaveEditor, selection);
              ConfigureChartDialog dialog = new ConfigureChartDialog(scaveEditor.getSite().getShell(), editedChart, scaveEditor);
              dialog.open();
          }
      }
  
      @Override
      public boolean isApplicable(final ScaveEditor editor, ISelection selection) {
          return getEditedChart(editor, selection) != null;
      }
  
      private Chart getEditedChart(ScaveEditor editor, ISelection selection) {
          ChartScriptEditor activeChartScriptEditor = editor.getActiveChartScriptEditor();
          if (activeChartScriptEditor != null)
              return activeChartScriptEditor.getChart();
  
          IStructuredSelection structuredSelection = asStructuredOrEmpty(selection);
          if (structuredSelection.size() == 1 && structuredSelection.getFirstElement() instanceof Chart)
              return (Chart)structuredSelection.getFirstElement();
          return null;
      }
  }
  