downloadstable.java

JMule是一个基于Java开发

				 });
				 cancel_download = new JMenuItem("Cancel download");
				 cancel_download.setIcon(ImgRep.getIcon("cancel.png"));
				 cancel_download.addActionListener(new ActionListener() {
					public void actionPerformed(ActionEvent e) {
						for(DownloadSession session : getSelectedDownloadSessions())
							_download_manager.removeDownload(session.getFileHash());
					}
				 });
				 paste_ed2k_links = new JMenuItem("Paste ed2k link(s)");
				 paste_ed2k_links.setIcon(ImgRep.getIcon("ed2k_link_paste.png"));
				 paste_ed2k_links.addActionListener(new ActionListener() {
					   public void actionPerformed(ActionEvent event) {
						      (new JMThread(new JMRunnable() {
						    	   public void JMRun() {
						    		 try {  
						    		   Object clipboard_contents = clipboard.getData(DataFlavor.stringFlavor);
						    		   List<ED2KFileLink> clipboard_file_links = ED2KFileLink.extractLinks(clipboard_contents.toString());
									   if( clipboard_file_links.size() != 0 )  
										 for(ED2KFileLink file_link : clipboard_file_links) {  
	                                        _download_manager.addDownload(file_link); 
										  }
						    		 }catch(Throwable t) {
						    			 t.printStackTrace();
						    		 }
								   }
						      })).start();
					   }
				   });
				 copy_ed2k_links = new JMenuItem("Copy ed2k link(s)");
				 copy_ed2k_links.setIcon(ImgRep.getIcon("ed2k_link.png"));
				 copy_ed2k_links.addActionListener(new ActionListener() {
					public void actionPerformed(ActionEvent e) {
						clipboard.setContents(new Transferable() {
							public Object getTransferData(DataFlavor flavor)
									throws UnsupportedFlavorException,
									IOException {
								String ed2k_links = "";
								DownloadSession[] download_sessions = getSelectedDownloadSessions();
								for(DownloadSession session : download_sessions) {
									ed2k_links += session.getED2KLink().getAsString() + System.getProperty("line.separator");
								}
								return ed2k_links;
							}

							public DataFlavor[] getTransferDataFlavors() {
								DataFlavor[] data_flavours = new DataFlavor[1];
								data_flavours[0] = DataFlavor.stringFlavor;
								return data_flavours;
							}

							public boolean isDataFlavorSupported(
									DataFlavor flavor) {
							    return flavor.isFlavorTextType();
							}
							
						}, new ClipboardOwner() {

							public void lostOwnership(Clipboard clipboard, Transferable contents) {
								
							}
							
						});
					}
				 });
				 column_setup = new JMenuItem("Column setup");
				 column_setup.setIcon(ImgRep.getIcon("columns_setup.png"));
				 column_setup.addActionListener(new ActionListener() {
					public void actionPerformed(ActionEvent e) {
						System.out.println("Column setup performed");
					}
				 });
				 properties = new JMenuItem("Properties");
				 properties.setIcon(ImgRep.getIcon("info.png"));
				 properties.addActionListener(new ActionListener() {
					public void actionPerformed(ActionEvent e) {
						DownloadSession sessions[] = getSelectedDownloadSessions();
						DownloadDetailsDialog ddd = new DownloadDetailsDialog(parent, sessions[0]);
						SwingUtils.setWindowLocationRelativeTo(ddd, parent);
						ddd.setVisible(true);
					}
				 });
			}
			
			public void mousePressed(MouseEvent e) {
				showPopup(e);
			}
			
			public void mouseReleased(MouseEvent e) {
				showPopup(e);
			}
			
			private void showPopup(MouseEvent e) {
				 
				 if (e.isPopupTrigger()) {
					 
					 JPopupMenu popup_menu = null;
					 
					 switch( whichCondition() ) {
					 
					     case A  :  popup_menu = new JPopupMenu();
					                popup_menu.add(stop_download);
					                popup_menu.add(cancel_download);
					                popup_menu.addSeparator();
					                popup_menu.add(copy_ed2k_links);
					                popup_menu.add(paste_ed2k_links);
					                popup_menu.addSeparator();
					           //     popup_menu.add(column_setup);
					                popup_menu.add(properties);
					                break;
					                
					     case B :   popup_menu = new JPopupMenu();
			                        popup_menu.add(stop_download);
			                        popup_menu.add(cancel_download);
			                        popup_menu.addSeparator();
			                        popup_menu.add(copy_ed2k_links);
			                        popup_menu.add(paste_ed2k_links);
			                        popup_menu.addSeparator();
			                 //       popup_menu.add(column_setup);
			                        popup_menu.add(properties);
			                        break;
			                        
					     case C :   popup_menu = new JPopupMenu();
					                popup_menu.add(start_download);
	                                popup_menu.add(cancel_download);
	                                popup_menu.addSeparator();
	                                popup_menu.add(copy_ed2k_links);
	                                popup_menu.add(paste_ed2k_links);
	                                popup_menu.addSeparator();
	                          //      popup_menu.add(column_setup);
	                                popup_menu.add(properties);
	                                break;
	                                
					     case D :   popup_menu = new JPopupMenu();
			                        popup_menu.add(start_download);
                                    popup_menu.add(cancel_download);
                                    popup_menu.addSeparator();
                                    popup_menu.add(copy_ed2k_links);
                                    popup_menu.add(paste_ed2k_links);
                                    popup_menu.addSeparator();
                             //       popup_menu.add(column_setup);
                                    popup_menu.add(properties);
                                    break;
                                  
					     case E :   popup_menu = new JPopupMenu();
					                //popup_menu.add(copy_ed2k_links);
                                    popup_menu.add(paste_ed2k_links);
                            //        popup_menu.addSeparator();
                            //        popup_menu.add(column_setup);
                                    break;
                                    
					     case F :   popup_menu = new JPopupMenu();
					                popup_menu.add(start_download);
			                        popup_menu.add(stop_download);
			                        popup_menu.add(cancel_download);
			                        popup_menu.addSeparator();
			                        popup_menu.add(copy_ed2k_links);
			                        popup_menu.add(paste_ed2k_links);
			                 //       popup_menu.addSeparator();
			                 //       popup_menu.add(column_setup);
			                        break;
					 }
					 
					 popup_menu.show(e.getComponent(), e.getX(), e.getY());
				 }
			}	
			
		}
		
		this.addMouseListener(new PopupListener());
	}
	
	private DownloadSession[] getDownloadSessionsByIndexes(int[] indexes) {

		DownloadSession[] result = new DownloadSession[indexes.length];
		int k = 0;
		for(int i : indexes) {
			int j = 0;
			for(DownloadSession session : _download_manager.getDownloads()) {
				if( j == this.convertRowIndexToModel(i) ) {
					result[k++] = session;
					break;
				}
				++j;
			}
		}

		return result;
	}
	
	private DownloadSession[] getSelectedDownloadSessions() {
		
		return getDownloadSessionsByIndexes(  this.getSelectedRows() );
	}
	

	/*
	 *  --------------------------------------------------------------------------------------
	 *                    |     STARTED    |         STOPPED    |       STARTED & STOPPED
	 *  ---------------------------------------------------------------------------------------
	 *  ONE_SELECTED      |       A                   C                     *
	 *                    |
	 *  MULTIPLE_SELECTED |       B                   D                     F
	 *                    |
	 *  VOID_LIST         |       *                   *                     *
	 *                    |
	 * 
	 *          E - void list
	 *          * - can't be
	 *          
	 *   Ac1 | Start download
	 *   Ac2 | Stop download
	 *   Ac3 | Cancel download
	 *   Ac4 | Copy ed2k link(s)
	 *   Ac5 | Paste ed2k link(s)
	 *   Ac6 | Column setup
	 *   Ac7 | Details
	 *   
	 *     |  Ac1    Ac2    Ac3    Ac4    Ac5    Ac6    Ac7
	 *  --------------------------------------------------------  
	 *   A |   -     Yes    Yes    Yes    Yes    Yes    Yes
	 *     |
	 *   B |   -     Yes    Yes    Yes    Yes    Yes    Yes
	 *     |
	 *   C |  Yes     -     Yes    Yes    Yes    Yes    Yes
	 *     |
	 *   D |  Yes     -     Yes    Yes    Yes    Yes    Yes
	 *     |
	 *   E |   -      -      -     -     Yes    Yes     -
	 *     |
	 *   F |  Yes    Yes    Yes    Yes    Yes    Yes     -
	 */
	
	private ConditionType whichCondition() {
		
		DownloadSession[] download_sessions = getSelectedDownloadSessions();
		
		if( ( download_sessions.length == 1 ) && 
			( download_sessions[0].getStatus() == DownloadSession.STATUS_STARTED ) )
			return ConditionType.A;
		
		if( download_sessions.length > 1) {
			boolean b = true;
			for(DownloadSession session : download_sessions) {
				if( session.getStatus() != DownloadSession.STATUS_STARTED ) {
					b = false;
					break;
				}
			}
			if(b) return ConditionType.B;		
		}
		
		if( ( download_sessions.length == 1 ) &&
			( download_sessions[0].getStatus() == DownloadSession.STATUS_STOPPED ) )
			return ConditionType.C;
		
		if( download_sessions.length > 1 ) {
			boolean b = true;
			for(DownloadSession session : download_sessions) {
				if( session.getStatus() != DownloadSession.STATUS_STOPPED ) { 
					 b = false;
					 break;
				}
			}
			if(b) return ConditionType.D;	
		}
		
		if( download_sessions.length == 0 ) return ConditionType.E;
		
		if( download_sessions.length > 1 ) {
			boolean some_started = false;
			boolean some_stopped = false;
			for(DownloadSession session : download_sessions) {
				if(session.getStatus() == DownloadSession.STATUS_STARTED) some_started = true;
				if(session.getStatus() == DownloadSession.STATUS_STOPPED) some_stopped = true;
			}
			if( some_started && some_stopped ) 
				return ConditionType.F;
		}
		
		return null;
	}
	
	private enum ConditionType {
		A,B,C,D,E,F
	}
	
}