xpdlviewcontrollerpanel.java

来自「jawe的最新版本,基于Java的图形化工作流编辑器。图形化工作流编辑器 。使用」· Java 代码 · 共 335 行

package org.enhydra.jawe.components.xpdlview;

import java.awt.BorderLayout;
import java.awt.Color;
import java.awt.Component;
import java.awt.Dimension;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.event.MouseWheelEvent;
import java.awt.event.MouseWheelListener;
import java.io.ByteArrayOutputStream;

import javax.swing.BorderFactory;
import javax.swing.Box;
import javax.swing.BoxLayout;
import javax.swing.JButton;
import javax.swing.JComboBox;
import javax.swing.JComponent;
import javax.swing.JLabel;
import javax.swing.JOptionPane;
import javax.swing.JPanel;
import javax.swing.SwingConstants;
import javax.swing.border.Border;
import javax.swing.text.PlainDocument;
import javax.xml.parsers.DocumentBuilder;
import javax.xml.parsers.DocumentBuilderFactory;
import javax.xml.transform.Transformer;
import javax.xml.transform.TransformerFactory;
import javax.xml.transform.dom.DOMSource;
import javax.xml.transform.stream.StreamResult;

import org.enhydra.jawe.JaWEComponent;
import org.enhydra.jawe.JaWEComponentView;
import org.enhydra.jawe.JaWEManager;
import org.enhydra.jawe.base.controller.JaWEFrame;
import org.enhydra.shark.xpdl.XMLAttribute;
import org.enhydra.shark.xpdl.XMLCollection;
import org.enhydra.shark.xpdl.XMLComplexChoice;
import org.enhydra.shark.xpdl.XMLComplexElement;
import org.enhydra.shark.xpdl.XMLElement;
import org.enhydra.shark.xpdl.XMLSimpleElement;
import org.enhydra.shark.xpdl.elements.Package;
import org.jedit.syntax.JEditTextArea;
import org.jedit.syntax.SyntaxDocument;
import org.jedit.syntax.SyntaxStyle;
import org.jedit.syntax.TextAreaPainter;
import org.jedit.syntax.Token;
import org.jedit.syntax.XMLTokenMarker;
import org.w3c.dom.Document;
import org.w3c.dom.Node;

/**
 *  Container for displaying menubar, toolbar, process graphs ...
 *
 *  @author Sasa Bojanic
 *  @author Miroslav Popov
 *  @author Zoran Milakovic
 */
public class XPDLViewControllerPanel extends JPanel implements JaWEComponentView {

   protected XPDLViewController controller;

// protected JScrollPane xpdlPreviewSP;
   protected JEditTextArea xpdlPreviewTA;
   
   protected JComboBox searchCB=new JComboBox();
   protected Component searchPanel;
   
   protected XMLElement elementToShow;
   
   public XPDLViewControllerPanel(XPDLViewController controller) {
      this.controller = controller;
   }
   
   public void configure() {      
   }
   
   public void init() {
      setBorder(BorderFactory.createEtchedBorder());
      setLayout(new BorderLayout());
      
      add(createCenterComponent(),BorderLayout.CENTER);
      searchPanel=createSearchPanel();
      add(searchPanel,BorderLayout.NORTH);      
   }

   public JaWEComponent getJaWEComponent() {
      return controller;
   }

   public JComponent getDisplay() {
      return this;
   }

   public void setSelectedElement (XMLElement pkgOrWpOrAs) {
      this.elementToShow=pkgOrWpOrAs;
      refreshView();
   }

   public XMLElement getSelectedElement () {
      return elementToShow;
   }
   
   /**
    * Create the center component of this panel.
    */
   protected Component createCenterComponent() {
      // creating text area pane for xpdl preview
      xpdlPreviewTA=new JEditTextArea();
//      xpdlPreviewTA.setLineWrap(false);
//      xpdlPreviewTA.setWrapStyleWord(false);
      xpdlPreviewTA.setEditable(false);
      xpdlPreviewTA.setMinimumSize(new Dimension(100,100));      
      xpdlPreviewTA.setElectricScroll(3);
      xpdlPreviewTA.addMouseWheelListener(new MouseWheelHandler(xpdlPreviewTA));
      
      Color bkgCol=((XPDLViewSettings)controller.getSettings()).getBackgroundColor();
      if (controller.getXPDLViewSettings().showHighlight()) {
         SyntaxDocument doc = new SyntaxDocument();
         doc.putProperty(PlainDocument.tabSizeAttribute, new Integer(4));      
         xpdlPreviewTA.setDocument(doc);
         
         xpdlPreviewTA.setTokenMarker(new XMLTokenMarker());
         
         TextAreaPainter painter = xpdlPreviewTA.getPainter();
         SyntaxStyle[] styles = painter.getStyles();
         styles[Token.KEYWORD1] = new SyntaxStyle(new Color(0, 102, 153), false, true);
         styles[Token.KEYWORD2] = new SyntaxStyle(new Color(0, 153, 102), false, true);
         styles[Token.KEYWORD3] = new SyntaxStyle(new Color(0, 153, 255), false, true);
         styles[Token.LITERAL1] = new SyntaxStyle(new Color(255, 0, 204), false, false);
         styles[Token.LITERAL2] = new SyntaxStyle(new Color(204, 0, 204), false, false);
         painter.setStyles(styles);
         painter.setEOLMarkersPainted(false);
         painter.setBracketHighlightEnabled(true);
         painter.setBackground(bkgCol);
      }
      xpdlPreviewTA.setBackground(bkgCol);
//      xpdlPreviewSP=new JScrollPane();
//      xpdlPreviewSP.setViewportView(xpdlPreviewTA);
//      JViewport port = xpdlPreviewSP.getViewport();
//      port.setScrollMode(JViewport.SIMPLE_SCROLL_MODE);
//      return xpdlPreviewSP;
      	return xpdlPreviewTA;
   }
   
   protected Component createSearchPanel () {
      JPanel sp=new JPanel();
      sp.setLayout(new BoxLayout(sp,BoxLayout.X_AXIS));
      
      Border emptyb=BorderFactory.createEmptyBorder(5,5,5,5);
      sp.setBorder(emptyb);
      
      JLabel jl=new JLabel(controller.getSettings().getLanguageDependentString("SearchForKey")+": ");
      jl.setAlignmentX(Component.LEFT_ALIGNMENT);
      jl.setAlignmentY(Component.BOTTOM_ALIGNMENT);
      jl.setHorizontalAlignment(SwingConstants.RIGHT);
      
      searchCB.setEditable(true);
      searchCB.setAlignmentX(Component.LEFT_ALIGNMENT);
      searchCB.setAlignmentY(Component.BOTTOM_ALIGNMENT);
      Dimension comboBoxDimension=new Dimension(200,20);
      searchCB.setMinimumSize(new Dimension(comboBoxDimension));
      searchCB.setMaximumSize(new Dimension(comboBoxDimension));
      searchCB.setPreferredSize(new Dimension(comboBoxDimension));
      Color bkgCol=((XPDLViewSettings)controller.getSettings()).getBackgroundColor();
      searchCB.setBackground(bkgCol);
      searchCB.getEditor().getEditorComponent().setBackground(bkgCol);
      
      JButton jb=new JButton("");

      jb.setIcon(controller.getXPDLViewSettings().getFindNextIcon());

      jb.setToolTipText(controller.getSettings().getLanguageDependentString("FindNextStringOccuranceKey"));
      jb.setVerticalTextPosition(SwingConstants.CENTER);
      jb.setAlignmentX(Component.LEFT_ALIGNMENT);
      jb.setAlignmentY(Component.BOTTOM_ALIGNMENT);
      jb.setPreferredSize(new Dimension(20,20));
      
      sp.add(jl);
      sp.add(searchCB);
      sp.add(Box.createHorizontalStrut(5));
      sp.add(jb);
      
      jb.addActionListener(new ActionListener(){
                              public void actionPerformed( ActionEvent ae ){
                                 findString();
                              }
                           });
      
      return sp;
   }
   
   public void refreshView () {
      try {
         String toDisp="";
         xpdlPreviewTA.setText(toDisp);
         
         Document document = null;
         
         
         DocumentBuilderFactory dbf = DocumentBuilderFactory.newInstance();
         DocumentBuilder dbuilder = dbf.newDocumentBuilder();
         document = dbuilder.newDocument();
         ByteArrayOutputStream baos=new ByteArrayOutputStream();
         
         // Here we get all document elements
         if (elementToShow!=null) {
            
            if (!(elementToShow instanceof XMLAttribute)) {
               if (elementToShow instanceof Package) {
                  JaWEManager.getInstance().getXPDLHandler().getXPDLRepositoryHandler().toXML(document, (Package)elementToShow);
               } else {
                  Node node = document.createElement(elementToShow.toName());
                  if (elementToShow instanceof XMLComplexElement) {
                     JaWEManager.getInstance().getXPDLHandler().getXPDLRepositoryHandler().toXML(node, (XMLComplexElement)elementToShow);
                  } else if (elementToShow instanceof XMLCollection) {
                     JaWEManager.getInstance().getXPDLHandler().getXPDLRepositoryHandler().toXML(node, (XMLCollection)elementToShow);
                  } else if (elementToShow instanceof XMLComplexChoice) {
                     JaWEManager.getInstance().getXPDLHandler().getXPDLRepositoryHandler().toXML(node, (XMLComplexChoice)elementToShow);
                  } else if (elementToShow instanceof XMLSimpleElement) {
                     JaWEManager.getInstance().getXPDLHandler().getXPDLRepositoryHandler().toXML(node, (XMLSimpleElement)elementToShow);
                  }
                  Node toAppend=node.getFirstChild();
                  if (toAppend==null) {
                     toAppend=node;
                  }
                  document.appendChild(toAppend);
               }
               // Use a Transformer for output
               TransformerFactory tFactory =
               TransformerFactory.newInstance();
               Transformer transformer = tFactory.newTransformer();
               transformer.setOutputProperty("indent","yes");
               transformer.setOutputProperty("{http://xml.apache.org/xslt}indent-amount","4");
               transformer.setOutputProperty("encoding", JaWEManager.getInstance().getJaWEController().getControllerSettings().getEncoding());
               if (!(elementToShow instanceof Package)) {
                  transformer.setOutputProperty("omit-xml-declaration","yes");
               }
               DOMSource source = new DOMSource(document);
               StreamResult result = new StreamResult(baos);
               transformer.transform(source,result);
               
               toDisp=baos.toString(JaWEManager.getInstance().getJaWEController().getControllerSettings().getEncoding());
               baos.close();
               
            } else {
               toDisp=elementToShow.toName()+"="+"\""+elementToShow.toValue()+"\"";
            }            
                        
         }
         
         xpdlPreviewTA.setText(toDisp);
         xpdlPreviewTA.setCaretPosition(0);
      } catch (Exception ex) {
         ex.printStackTrace();
      }
   }
   
   /**
    * Searches the XPDL context containd within text area to find wanted
    * string. Search starts from the current cursor location. When some
    * new text is entered into search box, it can be latter retrieved from
    * the box.
    */
   protected void findString() {
      if (searchCB.getSelectedItem()==null) return;
      String searchingTxt=searchCB.getSelectedItem().toString();
      addItemToCombo(searchingTxt);
      String txt = xpdlPreviewTA.getText();
      try {
         int foundPos=xpdlPreviewTA.getCaretPosition();
         for(int i=foundPos;i<=(txt.length() - searchingTxt.length());i++) {
            if(txt.substring(i,i + searchingTxt.length()).equalsIgnoreCase(searchingTxt)) {
               xpdlPreviewTA.setCaretPosition(i);
//               xpdlPreviewTA.getCaret().setSelectionVisible(true);
               xpdlPreviewTA.select(i,i+searchingTxt.length());
               foundPos = i+searchingTxt.length();
               return;
            }
         }
      } catch (Exception ex) {}
      JaWEFrame jf=JaWEManager.getInstance().getJaWEController().getJaWEFrame();
      JOptionPane.showMessageDialog(jf,
                                    controller.getSettings().getLanguageDependentString("MessageJaWEHasFinishedSearchingXPDL"),
                                    jf.getAppTitle(),JOptionPane.INFORMATION_MESSAGE);
      xpdlPreviewTA.setCaretPosition(0);
      return;
   }
   
   /**
    * Adds a text into combo box if it hasn't been there previously.
    */
   private void addItemToCombo (String searchingTxt) {
      if (searchingTxt==null || searchingTxt.trim().length()==0) return;
      for (int i=0; i<searchCB.getItemCount(); i++) {
         if (searchCB.getItemAt(i).toString().equals(searchingTxt)) {
            return;
         }
      }
      searchCB.addItem(searchingTxt);
   }
   
   public void changeLanguage () {
      JLabel l=(JLabel)((JPanel)searchPanel).getComponent(0);
      JButton b=(JButton)((JPanel)searchPanel).getComponent(3);
      l.setText(controller.getSettings().getLanguageDependentString("SearchForKey")+": ");
      b.setToolTipText(controller.getSettings().getLanguageDependentString("FindNextStringOccuranceKey"));
   }
   
}


class MouseWheelHandler implements MouseWheelListener
{
    JEditTextArea area;
    public MouseWheelHandler(JEditTextArea area) {
        this.area = area;
    }
    public void mouseWheelMoved(MouseWheelEvent e)
    {   
        if(e.isControlDown())
        {   if( (area.getFirstLine() + e.getWheelRotation()) < 0 || ((area.getFirstLine() + area.getVisibleLines() + e.getWheelRotation()) > area.getLineCount()) )
                return;
            area.setFirstLine(area.getFirstLine()
                + e.getWheelRotation());
        } else 
        {
            if( (area.getFirstLine() + e.getUnitsToScroll()) < 0 || ((area.getFirstLine() + area.getVisibleLines() + e.getUnitsToScroll()) > area.getLineCount()) )
                return;
            area.setFirstLine(area.getFirstLine()
                + e.getUnitsToScroll());
        }
    }
}