tab.java

这是一个基于java编写的torrent的P2P源码

    	views = (IView[]) tabs.values().toArray(new IView[tabs.size()]);
    	   	
    }finally{
    	
    	class_mon.exit();
    }   
    
    for (int i = 0; i < views.length; i++) {

    	IView view = views[i];
    	
        try {
          view.updateLanguage();
          view.refresh();
        }
        catch (Exception e) {
        	Debug.printStackTrace(e);
        }
    }
  }


  public static void 
  closeAllTabs() 
  {
  	Item[] tab_items;
  	
    try{
    	class_mon.enter();
      
    	tab_items = (Item[]) tabs.keySet().toArray(new Item[tabs.size()]);
    	
    }finally{
    	
    	class_mon.exit();
    }
    
    for (int i = 0; i < tab_items.length; i++) {
    	
        closed(tab_items[i], true);
      }
  }

  public static boolean hasDetails()
  {
      boolean hasDetails = false;
      try
      {
          class_mon.enter();

          Iterator iter = tabs.values().iterator();
          while (iter.hasNext())
          {
              IView view = (IView) iter.next();
              if(view instanceof ManagerView)
              {
                  hasDetails = true;
                  break;
              }
          }
      }
      finally
      {
          class_mon.exit();
      }

      return hasDetails;
  }

  public static void
  closeAllDetails() 
  {
  	Item[] tab_items;
  	
    try{
    	class_mon.enter();
    	
    	tab_items = (Item[]) tabs.keySet().toArray(new Item[tabs.size()]);

    }finally{
    	
    	class_mon.exit();
    }
    
    for (int i = 0; i < tab_items.length; i++) {
        IView view = (IView) tabs.get(tab_items[i]);
        if (view instanceof ManagerView) {
          closed(tab_items[i]);
        }
      }
  }

  public static void closeCurrent() {
    if (_folder == null || _folder.isDisposed())
      return;
    if(_folder instanceof TabFolder) {    
      TabItem[] items =  ((TabFolder)_folder).getSelection();
      if(items.length == 1) {
        closed(items[0]);		
      }
     } else {
       closed(((CTabFolder)_folder).getSelection());
     }
  }

  /**
   * @param selectNext if true, the next tab is selected, else the previous
   *
   * @author Rene Leonhardt
   */
  public static void selectNextTab(boolean selectNext) {
    if (_folder == null || _folder.isDisposed())
      return;
    final int nextOrPrevious = selectNext ? 1 : -1;
    if(_folder instanceof TabFolder) {
      TabFolder tabFolder = (TabFolder)_folder;
      int index = tabFolder.getSelectionIndex() + nextOrPrevious;
      if(index == 0 && selectNext || index == -2 || tabFolder.getItemCount() < 2)
        return;
      if(index == tabFolder.getItemCount())
        index = 0;
      else if(index < 0)
        index = tabFolder.getItemCount() - 1;
      tabFolder.setSelection(index);
    } else {
      CTabFolder tabFolder = (CTabFolder)_folder;
      int index = tabFolder.getSelectionIndex() + nextOrPrevious;
      if(index == 0 && selectNext || index == -2 || tabFolder.getItemCount() < 2)
        return;
      if(index == tabFolder.getItemCount())
        index = 0;
      else if(index < 0)
        index = tabFolder.getItemCount() - 1;
      tabFolder.setSelection(index);
    }
  }

  //public static void setFolder(TabFolder folder) {
  //public static void setFolder(CTabFolder folder) {
  public static void initialize(MainWindow mainwindow, Composite folder) {
    Tab.mainwindow = mainwindow;
		_folder = folder;
  }

  public static boolean 
  closed(Item item) 
  {
  	return closed(item, false);
  }
  
  public static boolean 
  closed(Item item, boolean bForceClose) 
  {
    IView view = (IView) tabs.get(item);
    if (!bForceClose && view instanceof UISWTViewImpl) {
    	if (!((UISWTViewImpl)view).requestClose()) {
    		return false;
    	}
    }

    try{
    	class_mon.enter();
    	
    	view = (IView) tabs.remove(item);
    }finally{
    	
    	class_mon.exit();
    }
    
    if (view != null) {
        try {
          if(view instanceof PluginView) {
          	mainwindow.removeActivePluginView(((PluginView)view).getPluginViewName());
          }
          if(view instanceof UISWTPluginView) {
          	mainwindow.removeActivePluginView(((UISWTPluginView)view).getPluginViewName());
          }
          if(view instanceof UISWTView)
          	mainwindow.removeActivePluginView(((UISWTView)view).getViewID());
   
          view.delete();
        } catch (Exception e) {
        	Debug.printStackTrace( e );
        }

        if (view instanceof MyTorrentsSuperView) {
          //TODO : There is a problem here on OSX when using Normal TABS
          /*  org.eclipse.swt.SWTException: Widget is disposed
                at org.eclipse.swt.SWT.error(SWT.java:2691)
                at org.eclipse.swt.SWT.error(SWT.java:2616)
                at org.eclipse.swt.SWT.error(SWT.java:2587)
                at org.eclipse.swt.widgets.Widget.error(Widget.java:546)
                at org.eclipse.swt.widgets.Widget.checkWidget(Widget.java:296)
                at org.eclipse.swt.widgets.Control.setVisible(Control.java:2573)
                at org.eclipse.swt.widgets.TabItem.releaseChild(TabItem.java:180)
                at org.eclipse.swt.widgets.Widget.dispose(Widget.java:480)
                at org.gudy.azureus2.ui.swt.Tab.closed(Tab.java:322)
           */
          //Tried to add a if(! item.isDisposed()) but it's not fixing it
          //Need to investigate...
          item.dispose();
          return true;
        }
        if (view instanceof MyTrackerView) {
          item.dispose();
          return true;
        }
        if (view instanceof MySharesView) {
        	item.dispose();
          return true;
        }
      }
      try {
        /*Control control;
        if(item instanceof CTabItem) {
          control = ((CTabItem)item).getControl();
        } else {
          control = ((TabItem)item).getControl();
        }
        if (control != null && !control.isDisposed())
          control.dispose();
        */
        item.dispose();
      }
      catch (Exception e) {
      	Debug.printStackTrace( e );
      }
      return true;
  }

  public void setFocus() {
    if (folder != null && !folder.isDisposed()) {
      if(useCustomTab) {
        ((CTabFolder)folder).setSelection((CTabItem)tabItem);
      } else {
        TabItem items[] = {(TabItem)tabItem};
        ((TabFolder)folder).setSelection(items);    
      }      
    }
  }

  public void dispose() {
    IView localView = null;
    try{
    	class_mon.enter();
      
      localView = (IView) tabs.get(tabItem);

      if (localView instanceof UISWTViewImpl) {
				if (!((UISWTViewImpl) localView).requestClose())
					return;
			}

      tabs.remove(tabItem);
    }finally{
    
    	class_mon.exit();
    }
    try {
      if (localView != null) {
        if(localView instanceof PluginView) {
        	mainwindow.removeActivePluginView(((PluginView)localView).getPluginViewName());
        }
        if(localView instanceof UISWTPluginView) {
        	mainwindow.removeActivePluginView(((UISWTPluginView)localView).getPluginViewName());
        }

        localView.delete();
      }
      tabItem.dispose();
    }
    catch (Exception e) {}
  }

  public static void addTabAddedListener(Listener listener)
  {
      addListener(tabAddListeners, listener);
  }

  public static void removeTabAddedListener(Listener listener)
  {
      removeListener(tabAddListeners, listener);
  }

  public static void addTabRemovedListener(Listener listener)
  {
      addListener(tabRemoveListeners, listener);
  }

  public static void removeTabRemovedListener(Listener listener)
  {
      removeListener(tabRemoveListeners, listener);
  }

  private static void addListener(List listenerList, Listener listener)
  {
      try
      {
          class_mon.enter();
          listenerList.add(listener);
      }
      finally
      {
          class_mon.exit();
      }
  }

  private static void removeListener(List listenerList, Listener listener)
  {
      try
      {
          class_mon.enter();
          listenerList.remove(listener);
      }
      finally
      {
          class_mon.exit();
      }
  }

  private static void notifyListeners(List listenerList, Item sender)
  {
      try
      {
          class_mon.enter();

          Iterator iter = listenerList.iterator();
          for (int i = 0; i < listenerList.size(); i++)
          {
                ((Listener)iter.next()).handleEvent(getEvent(sender));
          }
      }
      finally
      {
          class_mon.exit();
      }
  }

  protected static String
  escapeAccelerators(
	 String	str )
  {
	  if ( str == null ){
		  
		  return( str );
	  }
	  
	  return( str.replaceAll( "&", "&&" ));
  }
  
  private static Event getEvent(Item sender)
  {
      Event e = new Event();
      e.widget = sender;
      return e;
  }
  
  public void
  generateDiagnostics(
	IndentWriter	writer )
  {
	  view.generateDiagnostics( writer );
  }
}