configsectionipfilter.java

这是一个基于java编写的torrent的P2P源码

    table = new Table(gFilter, SWT.SINGLE | SWT.BORDER | SWT.FULL_SELECTION | SWT.VIRTUAL);
    String[] headers = { "ConfigView.section.ipfilter.description", "ConfigView.section.ipfilter.start", "ConfigView.section.ipfilter.end" };
    int[] sizes = { 110, 110, 110 };
    int[] aligns = { SWT.LEFT, SWT.CENTER, SWT.CENTER };
    for (int i = 0; i < headers.length; i++) {
      TableColumn tc = new TableColumn(table, aligns[i]);
      tc.setText(headers[i]);
      tc.setWidth(sizes[i]);
      Messages.setLanguageText(tc, headers[i]); //$NON-NLS-1$
    }
    
    
    
    TableColumn[] columns = table.getColumns();
    columns[0].setData(new Integer(FilterComparator.FIELD_NAME));
    columns[1].setData(new Integer(FilterComparator.FIELD_START_IP));
    columns[2].setData(new Integer(FilterComparator.FIELD_END_IP));
    
    Listener listener = new Listener() {
      public void handleEvent(Event e) {
        TableColumn tc = (TableColumn) e.widget;
        int field = ((Integer) tc.getData()).intValue();
        comparator.setField(field);
        
        if (field == FilterComparator.FIELD_NAME && !bIsCachingDescriptions) {
        	ipFilterManager.cacheAllDescriptions();
        	bIsCachingDescriptions = true;
        }
        ipRanges = getSortedRanges(filter.getRanges());
        table.setItemCount(ipRanges.length);
        table.clearAll();
    	// bug 69398 on Windows
    	table.redraw();
      }
    };
    
    columns[0].addListener(SWT.Selection,listener);
    columns[1].addListener(SWT.Selection,listener);
    columns[2].addListener(SWT.Selection,listener);

    table.setHeaderVisible(true);

    gridData = new GridData(GridData.FILL_BOTH);
    gridData.heightHint = table.getHeaderHeight() * 2;
		gridData.widthHint = 200;
    table.setLayoutData(gridData);

	gridData = new GridData();

    Composite cArea = new Composite(gFilter, SWT.NULL);
    layout = new GridLayout();
    layout.marginHeight = 0;
    layout.marginWidth = 0;
    layout.numColumns = 3;
    cArea.setLayout(layout);
    cArea.setLayoutData(gridData);

    Button add = new Button(cArea, SWT.PUSH);
    gridData = new GridData(GridData.CENTER);
    gridData.widthHint = 100;
    add.setLayoutData(gridData);
    Messages.setLanguageText(add, "ConfigView.section.ipfilter.add");
    add.addListener(SWT.Selection, new Listener() {
      public void handleEvent(Event arg0) {
        addRange();
      }
    });

    Button remove = new Button(cArea, SWT.PUSH);
    gridData = new GridData(GridData.CENTER);
    gridData.widthHint = 100;
    remove.setLayoutData(gridData);
    Messages.setLanguageText(remove, "ConfigView.section.ipfilter.remove");
    remove.addListener(SWT.Selection, new Listener() {
      public void handleEvent(Event arg0) {
        TableItem[] selection = table.getSelection();
        if (selection.length == 0)
          return;
        removeRange((IpRange) selection[0].getData());
        ipRanges = getSortedRanges(filter.getRanges());
        table.setItemCount(ipRanges.length);
        table.clearAll();
        table.redraw();
      }
    });

    Button edit = new Button(cArea, SWT.PUSH);
    gridData = new GridData(GridData.CENTER);
    gridData.widthHint = 100;
    edit.setLayoutData(gridData);
    Messages.setLanguageText(edit, "ConfigView.section.ipfilter.edit");
    edit.addListener(SWT.Selection, new Listener() {
      public void handleEvent(Event arg0) {
        TableItem[] selection = table.getSelection();
        if (selection.length == 0)
          return;
        editRange((IpRange) selection[0].getData());
      }
    });

    table.addMouseListener(new MouseAdapter() {
      public void mouseDoubleClick(MouseEvent arg0) {
        TableItem[] selection = table.getSelection();
        if (selection.length == 0)
          return;
        editRange((IpRange) selection[0].getData());
      }
    });

    Control[] controls = new Control[3];
    controls[0] = add;
    controls[1] = remove;
    controls[2] = edit;
    IAdditionalActionPerformer enabler = new ChangeSelectionActionPerformer(controls);
    enabled.setAdditionalActionPerformer(enabler);

    ipRanges = getSortedRanges(filter.getRanges());

    table.addListener(SWT.SetData,new Listener() {
      public void handleEvent(Event event) {
        TableItem item = (TableItem) event.item;
		int index = table.indexOf (item);
		
			// seems we can get -1 here (see bug 1219314 )
		
		if ( index < 0 || index >= ipRanges.length ){
			return;
		}
		IpRange range = ipRanges[index];		
        item.setText(0, range.getDescription());
        item.setText(1, range.getStartIp());
        item.setText(2, range.getEndIp());
        item.setData(range);
      }
    });
    
    table.setItemCount(ipRanges.length);
    table.clearAll();
	// bug 69398 on Windows
	table.redraw();
    
		table.addListener(SWT.Resize, new Listener() {
			public void handleEvent(Event e) {
        resizeTable();
			}
		});

		gFilter.addListener(SWT.Resize, new Listener() {
			public void handleEvent(Event e) {
        resizeTable();
			}
		});
    
    return gFilter;
  }
  
  private void resizeTable() {
	  int iNewWidth = table.getClientArea().width - 
                    table.getColumn(1).getWidth() - 
                    table.getColumn(2).getWidth() - 20;
    if (iNewWidth > 50)
      table.getColumn(0).setWidth(iNewWidth);          
  }

 

  public void removeRange(IpRange range) {
  	filter.removeRange( range );
    //noChange = false;
    //refresh();
  }

  public void editRange(IpRange range) {
    new IpFilterEditor(azureus_core,table.getShell(), table, range);
    noChange = false;
    //refresh();
  }

  public void addRange() {
    new IpFilterEditor(azureus_core,table.getShell(), table, null);
    //noChange = false;
    //refresh();
  }

  public void refresh() {
    if (table == null || table.isDisposed() || noChange)
      return;
    noChange = true;
    TableItem[] items = table.getItems();
    for (int i = 0; i < items.length; i++) {      
      if (items[i] == null || items[i].isDisposed())
        continue;
      String tmp = items[i].getText(0);
      IpRange range = (IpRange) items[i].getData();
      
      String	desc = range.getDescription();

      if (desc != null && !desc.equals(tmp))
        items[i].setText(0, desc);

      tmp = items[i].getText(1);
      if (range.getStartIp() != null && !range.getStartIp().equals(tmp))
        items[i].setText(1, range.getStartIp());

      tmp = items[i].getText(2);
      if (range.getEndIp() != null && !range.getEndIp().equals(tmp))
        items[i].setText(2, range.getEndIp());

    }
  }
  
  protected IpRange[]
  getSortedRanges(
  		IpRange[]	ranges )
  {
  	Arrays.sort(
  		ranges,
		comparator);
  	
  	return( ranges );
	
  }
  
  protected void
  setPercentageBlocked()
  {
    long nbIPsBlocked = filter.getTotalAddressesInRange();
    
    if ( COConfigurationManager.getBooleanParameter( "Ip Filter Allow" )){
    	
    	nbIPsBlocked = 0x100000000L - nbIPsBlocked;
    }
    
    int percentIPsBlocked =  (int) (nbIPsBlocked * 1000L / (256L * 256L * 256L * 256L));
    
    String nbIps = "" + nbIPsBlocked;
    String percentIps = DisplayFormatters.formatPercentFromThousands(percentIPsBlocked);

    Messages.setLanguageText(percentage_blocked,"ConfigView.section.ipfilter.totalIPs",new String[]{nbIps,percentIps});

  }
}