自定义EMF程序属性视图的Cell Editor

覆盖EMF生成的XXXEditor.java的getPropertySheetPage()方法，其余步骤见以下代码里的注释，这个例子是对特定类型的EAttribute（eType为"COM.YOUR.ETYPE"）使用自定义的对话框来设置属性值。

/**
 * This accesses a cached version of the property sheet.
 * <!-- begin-user-doc -->
 * <!-- end-user-doc -->
 * @generated NOT
 */
public IPropertySheetPage getPropertySheetPage() {
    if (propertySheetPage == null) {
        propertySheetPage =
            new ExtendedPropertySheetPage(editingDomain) {
                public void setSelectionToViewer(List selection) {
                    BMEditor.this.setSelectionToViewer(selection);
                    BMEditor.this.setFocus();
                }

                public void setActionBars(IActionBars actionBars) {
                    super.setActionBars(actionBars);
                    getActionBarContributor().shareGlobalActions(this, actionBars);
                }
            };
        //Use custom content provider here
        propertySheetPage.setPropertySourceProvider(new BMAdapterFactoryContentProvider(adapterFactory));
    }

    return propertySheetPage;
}

/**
 * Apply customized cell editor for custom datatype 
 * @author zhanghao
 *
 */
class BMAdapterFactoryContentProvider extends AdapterFactoryContentProvider{
    
    public BMAdapterFactoryContentProvider(AdapterFactory adapterFactory) {
        super(adapterFactory);
    }

    @Override
    protected IPropertySource createPropertySource(Object object, IItemPropertySource itemPropertySource) {
        return new PropertySource(object, itemPropertySource) {
            @Override
            protected IPropertyDescriptor createPropertyDescriptor(IItemPropertyDescriptor itemPropertyDescriptor) {
                return new PropertyDescriptor(object, itemPropertyDescriptor) {
                    @Override
                    public CellEditor createPropertyEditor(Composite composite) {
                        Object genericFeature = itemPropertyDescriptor.getFeature(object);
                        if(genericFeature instanceof EStructuralFeature && ((EStructuralFeature)genericFeature).getEType() instanceof EDataType){
                            EDataType eType=(EDataType)((EStructuralFeature)genericFeature).getEType();
                            if("COM.YOUR.DATATYPE".equals(eType.getInstanceTypeName())){
                                return new DialogCellEditor(composite) {
                                    @Override
                                    protected Object openDialogBox(Control cellEditorWindow) {
                                        //Open your dialog to read user input
                                        ExpressionDialog dialog = new ExpressionDialog(cellEditorWindow.getShell());
                                        Resource resource = BMEditor.this.getEditingDomain().getResourceSet().getResources().get(0);
                                        BusinessModel model=(BusinessModel)resource.getContents().get(0);
                                        dialog.setModel(model);
                                        if (Window.OK == dialog.open()) {
                                            return dialog.getDemand();
                                        }else{
                                            return object;
                                        }
                                    }
                                };
                            }
                        }
                        return super.createPropertyEditor(composite);
                    }
                };
            }
        };
    }
}

参考：http://dev.eclipse.org/newslists/news.eclipse.tools.emf/msg09433.html