plugins/net.mograsim.plugin.core/src/net/mograsim/plugin/nature/AddMograsimNatureHandler.java

   1 package net.mograsim.plugin.nature;
   2
   3 import java.util.Iterator;
   4
   5 import org.eclipse.core.commands.AbstractHandler;
   6 import org.eclipse.core.commands.ExecutionEvent;
   7 import org.eclipse.core.commands.ExecutionException;
   8 import org.eclipse.core.resources.IProject;
   9 import org.eclipse.core.resources.IProjectDescription;
  10 import org.eclipse.core.resources.IWorkspace;
  11 import org.eclipse.core.resources.ResourcesPlugin;
  12 import org.eclipse.core.runtime.CoreException;
  13 import org.eclipse.core.runtime.IAdaptable;
  14 import org.eclipse.core.runtime.IStatus;
  15 import org.eclipse.core.runtime.MultiStatus;
  16 import org.eclipse.jface.viewers.ISelection;
  17 import org.eclipse.jface.viewers.IStructuredSelection;
  18 import org.eclipse.ui.handlers.HandlerUtil;
  19
  20 public class AddMograsimNatureHandler extends AbstractHandler
  21 {
  22         @Override
  23         public Object execute(ExecutionEvent event) throws ExecutionException
  24         {
  25                 ISelection selection = HandlerUtil.getCurrentSelection(event);
  26
  27                 MultiStatus ms = new MultiStatus("net.mograsim.plugin.core", 42, "MograsimNature Conversion", null);
  28
  29                 if (selection instanceof IStructuredSelection)
  30                 {
  31                         for (Iterator<?> it = ((IStructuredSelection) selection).iterator(); it.hasNext();)
  32                         {
  33                                 Object element = it.next();
  34                                 IProject project = null;
  35                                 if (element instanceof IProject)
  36                                 {
  37                                         project = (IProject) element;
  38                                 } else if (element instanceof IAdaptable)
  39                                 {
  40                                         project = ((IAdaptable) element).getAdapter(IProject.class);
  41                                 }
  42                                 if (project != null)
  43                                 {
  44                                         try
  45                                         {
  46                                                 ms.add(toggleNature(project));
  47                                         }
  48                                         catch (CoreException e)
  49                                         {
  50                                                 // TODO log something
  51                                                 throw new ExecutionException("Failed to toggle nature", e);
  52                                         }
  53                                 }
  54                         }
  55                 }
  56
  57                 return ms.getSeverity();
  58         }
  59
  60         /**
  61          * Adds Mograsim nature on a project
  62          *
  63          * @param project to have Mograsim nature
  64          * @return
  65          */
  66         private IStatus toggleNature(IProject project) throws CoreException
  67         {
  68                 IProjectDescription description = project.getDescription();
  69                 String[] natures = description.getNatureIds();
  70
  71                 // Add the nature
  72                 String[] newNatures = new String[natures.length + 1];
  73                 System.arraycopy(natures, 0, newNatures, 0, natures.length);
  74                 newNatures[natures.length] = MograsimNature.NATURE_ID;
  75
  76                 IWorkspace workspace = ResourcesPlugin.getWorkspace();
  77                 IStatus status = workspace.validateNatureSet(newNatures);
  78
  79                 // only apply new nature, if the status is ok
  80                 if (status.getCode() == IStatus.OK)
  81                 {
  82                         description.setNatureIds(newNatures);
  83                         project.setDescription(description, null);
  84                 }
  85
  86                 return status;
  87         }
  88 }