filesview.java

基于JXTA开发平台的下载软件开发源代码

    					}
    				}else{
        			  
    					ok = true;
    				}
        	  
    				if ( ok ){
        		  
    					if ( !fileInfo.setLink( target )){
    						
    						MessageBox mb = new MessageBox(getComposite().getShell(),SWT.ICON_ERROR | SWT.OK );
    					    
    						mb.setText(MessageText.getString("FilesView.rename.failed.title"));
    					    
    						mb.setMessage(MessageText.getString("FilesView.rename.failed.text"));
    					    
    						mb.open();	    					
    					}
        		  
    					row.invalidate();
    				}
				}
			}
		}finally{
			
			if ( paused ){
				
				manager.resume();
			}
		}
	}
	
  protected void
  changePriority(
	  int				type ,
	  TableRowCore[]	rows )
  {
	  	if ( manager == null){
	  		
	  		return;
	  	}
  				
		boolean	paused = false;		

		try{
	
			for (int i=0;i<rows.length;i++){

				DiskManagerFileInfo fileInfo = (DiskManagerFileInfo)rows[i].getDataSource(true);

				boolean	this_paused;
				
				if ( type == 0){
					
		   			fileInfo.setPriority(true);
		   			
					this_paused = setSkipped( fileInfo, false, false );
					
				}else if ( type == 1 ){
					
		 			fileInfo.setPriority(false);
		 			
		 			this_paused = setSkipped( fileInfo, false, false );
					
				}else if ( type == 2 ){
					
					this_paused = setSkipped( fileInfo, true, false );
					
				}else{
					
					this_paused = setSkipped( fileInfo, true, true );
				}
				
				paused = paused || this_paused;
			}
		}finally{
			
			if ( paused ){
			
				manager.resume();
			}
		}
  }
  
  protected boolean
  setSkipped(
	 DiskManagerFileInfo	info,
	 boolean				skipped,
	 boolean				delete_action )
  {
		// if we're not managing the download then don't do anything other than
		// change the file's priority
	
	if ( !manager.isPersistent()){
		
		info.setSkipped( skipped );

		return( false );
	}
	
	File	existing_file 			= info.getFile(true);	
	int		existing_storage_type	= info.getStorageType();
	
		// we can't ever have storage = COMPACT and !skipped
		
	int		new_storage_type;
	
	if ( existing_file.exists()){
		
		if (!skipped ){
			
			new_storage_type	= DiskManagerFileInfo.ST_LINEAR;
			
		}else{
	
			boolean	delete_file;
			
			if ( delete_action ){
				
				delete_file =
					MessageBoxWindow.open( 
						"FilesView.messagebox.delete.id",
						SWT.OK | SWT.CANCEL,
						SWT.OK,
						getComposite().getDisplay(), 
						MessageBoxWindow.ICON_WARNING,
						MessageText.getString( "FilesView.rename.confirm.delete.title" ),
						MessageText.getString( "FilesView.rename.confirm.delete.text", new String[]{ existing_file.toString()})) == SWT.OK;
				
			}else{
				
				delete_file =
					MessageBoxWindow.open( 
						"FilesView.messagebox.skip.id",
						SWT.YES | SWT.NO,
						SWT.YES | SWT.NO,
						getComposite().getDisplay(), 
						MessageBoxWindow.ICON_WARNING,
						MessageText.getString( "FilesView.rename.confirm.delete.title" ),
						MessageText.getString( "FilesView.skip.confirm.delete.text", new String[]{ existing_file.toString()})) == SWT.YES;
			}

			if ( delete_file ){
				
				new_storage_type	= DiskManagerFileInfo.ST_COMPACT;

			}else{
				
				new_storage_type	= DiskManagerFileInfo.ST_LINEAR;
			}
		}
	}else{
		
		if ( skipped ){
			
			boolean	compact_disabled = MessageBoxWindow.getRememberedDecision( 
											"FilesView.messagebox.skip.id",
											SWT.YES | SWT.NO ) == SWT.NO;

			if ( compact_disabled ){
				
				new_storage_type	= DiskManagerFileInfo.ST_LINEAR;
				
			}else{
				
				new_storage_type	= DiskManagerFileInfo.ST_COMPACT;
			}
		}else{
			
			new_storage_type	= DiskManagerFileInfo.ST_LINEAR;

		}
	}
	
	boolean	ok;
	
	boolean	paused	= false;
	
	if ( existing_storage_type != new_storage_type ){
		
		if ( new_storage_type == DiskManagerFileInfo.ST_COMPACT ){
			
			paused = manager.pause();
		}
		
		ok = info.setStorageType( new_storage_type );
		
	}else{
		
		ok = true;
	}
	
	if ( ok ){
		
		info.setSkipped( skipped );
	}
	
	return( paused );
  }

  /* (non-Javadoc)
   * @see org.gudy.azureus2.ui.swt.IView#refresh()
   */
  public synchronized void refresh(boolean bForceSort) {
  	if (refreshing)
  		return;

  	refreshing = true;
    if(getComposite() == null || getComposite().isDisposed())
      return;

    removeInvalidFileItems();

    DiskManagerFileInfo files[] = getFileInfo();
	
    if (files != null && getTable().getItemCount() != files.length && files.length > 0) {
	    Object filesCopy[] = new Object[files.length]; 
	    System.arraycopy(files, 0, filesCopy, 0, files.length);
    	addDataSources(filesCopy);
    }
    
    super.refresh(bForceSort);
    refreshing = false;
  }
  
  private void removeInvalidFileItems() {
    
    final DiskManagerFileInfo files[] = getFileInfo();

    runForAllRows(new GroupTableRowRunner() {
      public void run(TableRowCore row) {
        DiskManagerFileInfo fileInfo = (DiskManagerFileInfo)row.getDataSource(true);
        if (fileInfo != null && !containsFileInfo(files, fileInfo)) {
          removeDataSource(fileInfo);
        }
      }
    });
  }
  
  private boolean containsFileInfo(DiskManagerFileInfo[] files,
                                   DiskManagerFileInfo file) {
    //This method works with reference comparision
    if(files == null || file == null) {
      return false;
    }
    for(int i = 0 ; i < files.length ; i++) {
      if(files[i] == file)
        return true;
    }
    return false;
  }
  

  
  /* SubMenu for column specific tasks.
   */
  public void addThisColumnSubMenu(String sColumnName, Menu menuThisColumn) {

    if (sColumnName.equals("path")) {
      path_item = new MenuItem( menuThisColumn, SWT.CHECK );
      
      menuThisColumn.addListener( SWT.Show, new Listener() {
        public void handleEvent(Event e) {
          path_item.setSelection( show_full_path );
        }
      });
      
      Messages.setLanguageText(path_item, "FilesView.fullpath");
      
      path_item.addListener(SWT.Selection, new Listener() {
        public void handleEvent(Event e) {
          show_full_path = path_item.getSelection();
          columnInvalidate("path");
          refreshTable(false);
          COConfigurationManager.setParameter( "FilesView.show.full.path", show_full_path );
        }
      });
      
    }
  }
  
  
  private DiskManagerFileInfo[]
  getFileInfo()
  {
  	if (manager == null)
  		return null;
	  return( manager.getDiskManagerFileInfo());
  }
}