import org.eclipse.emf.common.command.AbstractCommand; //导入依赖的package包/类
public EcoreCodeGeneratorCheckStateListener(EditingDomain editingDomain, WritableValue<EcoreCodeGenerator> eCoreCodeGeneratorWritableValue, CheckboxTreeViewer checkboxTreeViewer) {
	this.editingDomain = editingDomain;
	this.eCoreCodeGeneratorWritableValue = eCoreCodeGeneratorWritableValue;
	this.checkboxTreeViewer = checkboxTreeViewer;
	refreshCommand = new AbstractCommand() {

			@Override
			public void redo() {
				checkboxTreeViewer.refresh();							
			}

			@Override
			public void undo() {
				checkboxTreeViewer.refresh();
			}

			@Override
			public void execute() {
				// NOP							
			}

			@Override
			protected boolean prepare() {
				return true;
			}

		};
}
 

import org.eclipse.emf.common.command.AbstractCommand; //导入依赖的package包/类
@Override
@SuppressWarnings("unchecked")
protected void undo() throws Throwable {
	if (command != null) {
		Object observed = getObserved();
		EditingDomain domain = EMFUtils.getAnyDomain(observed);
		domain.getCommandStack().execute(new AbstractCommand() {
			@Override
			protected boolean prepare() {
				return true;
			}

			@Override
			public void execute() {
				command.undo();
			}

			@Override
			public void undo() {
				command.redo();
			}

			@Override
			public void redo() {
				command.undo();
			}
		});
	} else if (pd instanceof MultiItemPropertyDescriptor) {
		((MultiItemPropertyDescriptor) pd).setValues((Collection<Object>) oldValue);
	} else {
		pd.setPropertyValue(getObserved(), oldValue);
	}
}
 

import org.eclipse.emf.common.command.AbstractCommand; //导入依赖的package包/类
@Override
protected void redo() throws Throwable {
	if (command != null) {
		Object observed = getObserved();
		EditingDomain domain = EMFUtils.getAnyDomain(observed);
		domain.getCommandStack().execute(new AbstractCommand() {
			@Override
			protected boolean prepare() {
				return true;
			}

			@Override
			public void execute() {
				command.redo();
			}

			@Override
			public void undo() {
				command.undo();
			}

			@Override
			public void redo() {
				command.redo();
			}
		});
	} else {
		doit(new NullProgressMonitor());
	}
}
 

import org.eclipse.emf.common.command.AbstractCommand; //导入依赖的package包/类
@Override
public void doSaveAs() {
  String[] files = selectSaveAsDestinationPath(getSite().getShell());
  if (files.length > 0) {
    URI uri = URI.createFileURI(files[0]);
    URIEditorInput editorInput = new URIEditorInput(uri);
    (getEditingDomain().getResourceSet().getResources().get(0)).setURI(uri);
    (getEditingDomain().getResourceSet().getResources().get(0)).setModified(true);
    String fileName = editorInput.getName();
    String diagramName = fileName.substring(0, fileName.lastIndexOf('.'));
    getEditingDomain().getCommandStack().execute(new AbstractCommand() {
      String oldName;

      @Override
      public boolean canExecute() {
        return true;
      }

      @Override
      public void redo() {
        if (oldName != null) {
          getDiagramTypeProvider().getDiagram().setName(oldName);
        }
      }

      @Override
      public void execute() {
        oldName = getDiagramTypeProvider().getDiagram().getName();
        getDiagramTypeProvider().getDiagram().setName(diagramName);
      }
    });
    setInputWithNotify(editorInput);
    setPartName(diagramName);
    getSite().getShell().setText(uri.toString());
    IActionBars actionBars = ((EditorActionBarContributor) getEditorSite().getActionBarContributor()).getActionBars();
    IProgressMonitor progressMonitor = actionBars.getStatusLineManager() != null ? actionBars.getStatusLineManager().getProgressMonitor()
        : new NullProgressMonitor();

    doSave(progressMonitor);
  }
}
 

import org.eclipse.emf.common.command.AbstractCommand; //导入依赖的package包/类
@Override
public void selectionChanged(SelectionChangedEvent event) {
	
	if(refreshInProgress){
		return;
	}
	
	final StructuredSelection ss = (StructuredSelection)event.getSelection();
	
	alternative.getEditingDomain().getCommandStack().execute(new AbstractCommand() {
		
		Sequence last = null;
		
		@Override
		public void undo() {
			UsageComposite.this.usage.setLoadEvolution(last);
		}
		
		@Override
		public void redo() {
			Sequence sequence = (Sequence)ss.getFirstElement();
			UsageComposite.this.usage.setLoadEvolution(sequence);
		}
		
		@Override
		public boolean canExecute() {
			return true;
		}
		
		@Override
		public void execute() {
			last = UsageComposite.this.usage.getLoadEvolution();
			
			IEditorInputResource eir = (IEditorInputResource)ss.getFirstElement();
			if(eir instanceof EditorInputEMF){
				EditorInputEMF eie = (EditorInputEMF)eir;
				EObject eo = eie.getModelRootObject(ToolchainUtils.KEY_FILE_LIMBO);
				UsageComposite.this.usage.setLoadEvolution((Sequence)eo);						
			}					
		}
	});
}