import org.pentaho.ui.xul.swt.tags.SwtDeck; //导入依赖的package包/类
public GitPerspective() throws XulException {
  // Loading Xul Document
  KettleXulLoader loader = new KettleXulLoader();
  loader.registerClassLoader( getClass().getClassLoader() );
  container = loader.loadXul( "org/pentaho/di/git/spoon/xul/git_perspective.xul", resourceBundle );

  // Adding Event Handlers
  controller = new GitController();
  gitSpoonMenuController = new GitSpoonMenuController();
  gitSpoonMenuController.setGitController( controller );
  container.addEventHandler( controller );
  container.addEventHandler( gitSpoonMenuController );

  final XulRunner runner = new SwtXulRunner();
  runner.addContainer( container );
  runner.initialize(); //calls any onload events

  /*
   * To make compatible with webSpoon
   * Create a temporary parent for the UI and then call layout().
   * A different parent will be assigned to the UI in SpoonPerspectiveManager.PerspectiveManager.performInit().
   */
  SwtDeck deck = (SwtDeck) Spoon.getInstance().getXulDomContainer().getDocumentRoot().getElementById( "canvas-deck" );
  box = deck.createVBoxCard();
  getUI().setParent( (Composite) box.getManagedObject() );
  getUI().layout();

  /**
   * Hack: setAccelerator 'CTRL(CMD) + D' to "Data Integration" menu
   */
  int mask = 'D';
  if ( System.getProperty( "KETTLE_CONTEXT_PATH" ) == null ) { // Spoon
    boolean isMac = System.getProperty( "os.name" ).toLowerCase().indexOf( "mac" ) >= 0;
    mask += isMac ? SWT.COMMAND : SWT.CTRL;
  } else { // webSpoon
    mask += SWT.CTRL;
  }
  int keyCode = mask;
  XulMenupopup menuPopup = (XulMenupopup) Spoon.getInstance().getXulDomContainer().getDocumentRoot().getElementById( "view-perspectives-popup" );
  MenuManager menuMgr = (MenuManager) menuPopup.getManagedObject();
  // No guarantee that "Data Integration" gets "menuitem-0" as its ID, but looks ok so far
  Stream.of( menuMgr.getItems() )
    .filter( menu -> menu.getId().equals( "menuitem-0" ) ).findFirst().ifPresent( menu -> {
      IAction action = ( (ActionContributionItem) menu ).getAction();
      action.setAccelerator( keyCode );
    } );
}