knowledgeflowapp.java

代码是一个分类器的实现,其中使用了部分weka的源代码。可以将项目导入eclipse运行

    
    JToolBar fixedTools2 = new JToolBar();
    fixedTools2.setOrientation(JToolBar.VERTICAL);
    fixedTools2.setFloatable(false);
    fixedTools2.add(m_pointerB);
    fixedTools2.add(m_helpB);
    fixedTools2.add(m_stopB);
    m_helpB.setPreferredSize(dP);
    m_helpB.setMaximumSize(dP);
    toolBarPanel.add(fixedTools2, BorderLayout.EAST);

    m_saveB.addActionListener(new ActionListener() {
	public void actionPerformed(ActionEvent e) {
	  saveLayout();
	}
      });

    m_loadB.addActionListener(new ActionListener() {
	public void actionPerformed(ActionEvent e) {
	  loadLayout();
	}
      });

    m_stopB.addActionListener(new ActionListener() {
	public void actionPerformed(ActionEvent e) {
	  Vector components = BeanInstance.getBeanInstances();
	  for (int i = 0; i < components.size(); i++) {
	    Object temp = ((BeanInstance)components.elementAt(i)).getBean();
	    if (temp instanceof BeanCommon) {
	      ((BeanCommon)temp).stop();
	    }
	  }
	}
      });

    m_helpB.addActionListener(new ActionListener() {
	public void actionPerformed(ActionEvent ae) {
	  popupHelp();
	}
      });

    m_newB.addActionListener(new ActionListener() {
        public void actionPerformed(ActionEvent ae) {
          clearLayout();
        }
      });

    final int STANDARD_TOOLBAR = 0;
    final int WEKAWRAPPER_TOOLBAR = 1;

    int toolBarType = STANDARD_TOOLBAR;
    // set up wrapper toolbars
    for (int i = 0; i < TOOLBARS.size(); i++) {
      Vector tempBarSpecs = (Vector)TOOLBARS.elementAt(i);
      
      // name for the tool bar
      String tempBarName = (String)tempBarSpecs.elementAt(0);
      
      // Used for weka leaf packages 
      Box singletonHolderPanel = null;

      // name of the bean component to handle this class of weka algorithms
      String tempBeanCompName = (String)tempBarSpecs.elementAt(1);
      // a JPanel holding an instantiated bean + label ready to be added
      // to the current toolbar
      JPanel tempBean;

      // the root package for weka algorithms
      String rootPackage = "";
      weka.gui.HierarchyPropertyParser hpp = null;
      Hashtable hpps = null;

      // Is this a wrapper toolbar?
      if (tempBeanCompName.compareTo("null") != 0) {
	tempBean = null;
	toolBarType = WEKAWRAPPER_TOOLBAR;
	rootPackage = (String)tempBarSpecs.elementAt(2);
        //	hpp = (weka.gui.HierarchyPropertyParser)tempBarSpecs.elementAt(3);
        hpps = (Hashtable)tempBarSpecs.elementAt(3);
	try {
	  Beans.instantiate(null, tempBeanCompName);
	} catch (Exception ex) {
	  // ignore
	  System.err.println("Failed to instantiate: "+tempBeanCompName);
	  break;
	}
      } else {
	toolBarType = STANDARD_TOOLBAR;
      }
      // a toolbar to hold buttons---one for each algorithm
      JToolBar tempToolBar = new JToolBar();
      //      System.err.println(tempToolBar.getLayout());
      //      tempToolBar.setLayout(new FlowLayout());
      int z = 2;
      if (toolBarType == WEKAWRAPPER_TOOLBAR) {
        Enumeration enm = hpps.keys();
        while (enm.hasMoreElements()) {
          String root = (String) enm.nextElement();
          String userPrefix = "";
          hpp = (HierarchyPropertyParser) hpps.get(root);

          if (!hpp.goTo(rootPackage)) {
            System.err.println("**** Processing user package... ");
            //            System.exit(1);
            userPrefix = root+".";
          }
          String [] primaryPackages = hpp.childrenValues();
          for (int kk = 0; kk < primaryPackages.length; kk++) {
            hpp.goToChild(primaryPackages[kk]);
            // check to see if this is a leaf - if so then there are no
            // sub packages
            if (hpp.isLeafReached()) {
              if (singletonHolderPanel == null) {
                singletonHolderPanel = Box.createHorizontalBox();
                singletonHolderPanel.setBorder(javax.swing.BorderFactory.
                                               createTitledBorder(tempBarName));
              }
              String algName = hpp.fullValue();
              tempBean = instantiateToolBarBean(true,
                                                tempBeanCompName, algName);
              if (tempBean != null) {
                // tempToolBar.add(tempBean);
                singletonHolderPanel.add(tempBean);
              }
              hpp.goToParent();
            } else {
              // make a titledborder JPanel to hold all the schemes in this
              // package
              //	    JPanel holderPanel = new JPanel();
              Box holderPanel = Box.createHorizontalBox();
              holderPanel.setBorder(javax.swing.BorderFactory.
                                    createTitledBorder(userPrefix+primaryPackages[kk]));
              processPackage(holderPanel, tempBeanCompName, hpp);
              tempToolBar.add(holderPanel);
            }
          }
          if (singletonHolderPanel != null) {
            tempToolBar.add(singletonHolderPanel);
            singletonHolderPanel = null;
          }
        }
      } else {
	Box holderPanel = Box.createHorizontalBox();
	 holderPanel.setBorder(javax.swing.BorderFactory.
			       createTitledBorder(tempBarName));
	for (int j = z; j < tempBarSpecs.size(); j++) {
	  tempBean = null;
	  tempBeanCompName = (String)tempBarSpecs.elementAt(j);
	  tempBean = 
	    instantiateToolBarBean((toolBarType == WEKAWRAPPER_TOOLBAR),
				   tempBeanCompName, "");

	  if (tempBean != null) {
	    // set tool tip text (if any)
	    // setToolTipText(tempBean)
	    holderPanel.add(tempBean);
	  } 
	}
	tempToolBar.add(holderPanel);
      }
      
      JScrollPane tempJScrollPane = 
        createScrollPaneForToolBar(tempToolBar);
      // ok, now create tabbed pane to hold this toolbar

      m_toolBars.addTab(tempBarName, null, 
			tempJScrollPane,
			tempBarName);
      
    }
    toolBarPanel.add(m_toolBars, BorderLayout.CENTER);

    //    add(m_toolBars, BorderLayout.NORTH);
    add(toolBarPanel, BorderLayout.NORTH);
  }

  private JScrollPane createScrollPaneForToolBar(JToolBar tb) {
    JScrollPane tempJScrollPane = 
      new JScrollPane(tb, 
                      JScrollPane.VERTICAL_SCROLLBAR_NEVER,
                      JScrollPane.HORIZONTAL_SCROLLBAR_ALWAYS);
    
    Dimension d = tb.getPreferredSize();
    tempJScrollPane.setMinimumSize(new Dimension((int)d.getWidth(),
                                                 (int)(d.getHeight()+15)));
    tempJScrollPane.setPreferredSize(new Dimension((int)d.getWidth(),
                                                   (int)(d.getHeight()+15)));
    tempJScrollPane.getHorizontalScrollBar().setUnitIncrement(
        m_ScrollBarIncrementComponents);

    return tempJScrollPane;
  }

  private void processPackage(JComponent holderPanel,
			      String tempBeanCompName,
			      weka.gui.HierarchyPropertyParser hpp) {
    if (hpp.isLeafReached()) {
      // instantiate a bean and add it to the holderPanel
      //      System.err.println("Would add "+hpp.fullValue());
      String algName = hpp.fullValue();
      JPanel tempBean = 
	instantiateToolBarBean(true, tempBeanCompName, algName);
      if (tempBean != null) {
	holderPanel.add(tempBean);
      }
      hpp.goToParent();
      return;
    }
    String [] children = hpp.childrenValues();
    for (int i = 0; i < children.length; i++) {
      hpp.goToChild(children[i]);
      processPackage(holderPanel, tempBeanCompName, hpp);
    }
    hpp.goToParent();
  }

  /**
   * Instantiates a bean for display in the toolbars
   *
   * @param wekawrapper true if the bean to be instantiated is a wekawrapper
   * @param tempBeanCompName the name of the bean to instantiate
   * @param algName holds the name of a weka algorithm to configure the
   * bean with if it is a wekawrapper bean
   * @return a JPanel holding the instantiated (and configured bean)
   */
  private JPanel instantiateToolBarBean(boolean wekawrapper, 
					String tempBeanCompName,
					String algName) {
    Object tempBean;
    if (wekawrapper) {
      try {
	tempBean = Beans.instantiate(null, tempBeanCompName);
      } catch (Exception ex) {
	System.err.println("Failed to instantiate :"+tempBeanCompName
			   +"KnowledgeFlowApp.instantiateToolBarBean()");
	return null;
      }
      if (tempBean instanceof WekaWrapper) {
	//	algName = (String)tempBarSpecs.elementAt(j);
	Class c = null;
	try {
	  c = Class.forName(algName);
	} catch (Exception ex) {
	  System.err.println("Can't find class called: "+algName);
	  return null;
	}
	try {
	  Object o = c.newInstance();
	  ((WekaWrapper)tempBean).setWrappedAlgorithm(o);
	} catch (Exception ex) {
	  System.err.println("Failed to configure "+tempBeanCompName
			     +" with "+algName);
	  return null;
	}
      }
    } else {
      try {
	tempBean = Beans.instantiate(null, tempBeanCompName);
      } catch (Exception ex) {
	ex.printStackTrace();
	System.err.println("Failed to instantiate :"+tempBeanCompName
			   +"KnowledgeFlowApp.setUpToolBars()");
	return null;
      }
    }
    
    if (tempBean instanceof BeanContextChild) {
      m_bcSupport.add(tempBean);
    }
    if (tempBean instanceof Visible) {
      ((Visible)tempBean).getVisual().scale(3);
    }

    return makeHolderPanelForToolBarBean(tempBeanCompName, tempBean, 
                                         wekawrapper, algName, false);
  }

  /**
   * Instantiates (by making a serialized copy) the supplied
   * template meta bean for display in the user tool bar
   * 
   * @param bean the prototype MetaBean to display in the toolbar
   */
  private JPanel instantiateToolBarMetaBean(MetaBean bean) {
    // copy the bean via serialization
    ((Visible)bean).getVisual().removePropertyChangeListener(this);
    bean.removePropertyChangeListenersSubFlow(this);
    Object copy = null;
    try {
      SerializedObject so = new SerializedObject(bean);
      copy = (MetaBean)so.getObject();
    } catch (Exception ex) {
      ex.printStackTrace();
      return null;
    }
    ((Visible)bean).getVisual().addPropertyChangeListener(this);
    bean.addPropertyChangeListenersSubFlow(this);

    String displayName ="";
    //
    if (copy instanceof Visible) {
      ((Visible)copy).getVisual().scale(3);
      displayName = ((Visible)copy).getVisual().getText();
    }
    return makeHolderPanelForToolBarBean(displayName,
                                         copy,
                                         false,
                                         null,
                                         true);
  }

  private JPanel makeHolderPanelForToolBarBean(final String tempName,
                                               Object tempBean,
                                               boolean wekawrapper,
                                               String algName,
                                               final boolean metabean) {
    // ---------------------------------------
    JToggleButton tempButton;
    final JPanel tempP = new JPanel();
    JLabel tempL = new JLabel();
    tempL.setFont(new Font("Monospaced", Font.PLAIN, 10));
    String labelName = (wekawrapper == true) 
      ? algName 
      : tempName;
    labelName = labelName.substring(labelName.lastIndexOf('.')+1, 
				    labelName.length());
    tempL.setText(" "+labelName+" ");
    tempL.setHorizontalAlignment(JLabel.CENTER);
    tempP.setLayout(new BorderLayout());
    if (tempBean instanceof Visible) {
      BeanVisual bv = ((Visible)tempBean).getVisual();
      tempButton = 
	new JToggleButton(bv.getStaticIcon());
      int width = bv.getStaticIcon().getIconWidth();
      int height = bv.getStaticIcon().getIconHeight();
      
      JPanel labelPanel = 
	multiLineLabelPanel(labelName, width);
      tempP.add(labelPanel, BorderLayout.SOUTH);
    } else {
      tempButton = new JToggleButton();
      tempP.add(tempL, BorderLayout.SOUTH);
    }
    tempP.add(tempButton, BorderLayout.NORTH);
    //    tempP.add(tempL, BorderLayout.SOUTH);
    
    //  holderPanel.add(tempP);
    //    tempToolBar.add(tempP);
    m_toolBarGroup.add(tempButton);
    
    // add an action listener for the button here
    final Object tempBN = tempBean;
    final JToggleButton fButton = tempButton;
    //	  final JToggleButton tempButton2 = tempButton;
    tempButton.addActionListener(new ActionListener() {
	public void actionPerformed(ActionEvent e) {
          boolean changeCursor = true;
	  try {
	    m_toolBarBean = null;
            if (metabean) {
              if ((e.getModifiers() & ActionEvent.SHIFT_MASK) != 0) {
                changeCursor = false;
                m_toolBarGroup.remove(fButton);
                m_userBoxPanel.remove(tempP);
                m_userBoxPanel.revalidate();
                m_userComponents.remove(tempBN);
                if (m_firstUserComponentOpp) {
                  installWindowListenerForSavingUserBeans();
                  m_firstUserComponentOpp = false;
                }
                if (m_userComponents.size() == 0) {
                  m_toolBars.removeTabAt(m_toolBars.getTabCount() - 1);
                  m_userToolBar = null;
                }
              } else {
                SerializedObject so = new SerializedObject(tempBN);
                MetaBean copy = (MetaBean)so.getObject();
                ((Visible)copy).getVisual().
                  addPropertyChangeListener(KnowledgeFlowApp.this);
                copy.addPropertyChangeListenersSubFlow(KnowledgeFlowApp.this);