xmlbasiclistpanel.java

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语言开发

package org.enhydra.jawe.base.panel.panels;

import java.awt.Color;
import java.awt.Component;
import java.awt.Dimension;
import java.awt.event.ActionEvent;
import java.awt.event.KeyEvent;
import java.awt.event.MouseAdapter;
import java.awt.event.MouseEvent;
import java.util.ArrayList;
import java.util.Iterator;
import java.util.List;

import javax.swing.AbstractAction;
import javax.swing.Action;
import javax.swing.Box;
import javax.swing.BoxLayout;
import javax.swing.DefaultListModel;
import javax.swing.JButton;
import javax.swing.JComponent;
import javax.swing.JList;
import javax.swing.JOptionPane;
import javax.swing.JPanel;
import javax.swing.JScrollPane;
import javax.swing.KeyStroke;
import javax.swing.ListSelectionModel;
import javax.swing.event.ListSelectionEvent;
import javax.swing.event.ListSelectionListener;

import org.enhydra.jawe.JaWEManager;
import org.enhydra.jawe.ResourceManager;
import org.enhydra.jawe.base.controller.JaWEActions;
import org.enhydra.jawe.base.controller.JaWEController;
import org.enhydra.jawe.base.editor.StandardXPDLElementEditor;
import org.enhydra.jawe.base.panel.InlinePanel;
import org.enhydra.jawe.base.panel.PanelSettings;
import org.enhydra.shark.xpdl.XMLCollection;
import org.enhydra.shark.xpdl.XMLElement;
import org.enhydra.shark.xpdl.XMLElementChangeInfo;
import org.enhydra.shark.xpdl.XMLElementChangeListener;
import org.enhydra.shark.xpdl.XMLUtil;

/**
 * Creates a list panel.
 * 
 * @author Sasa Bojanic
 * @author Zoran Milakovic
 * @author Miroslav Popov
 *  
 */
public class XMLBasicListPanel extends XMLBasicPanel implements XMLElementChangeListener {

   protected static Dimension minimalDimension = new Dimension(250, 60);

   protected static Dimension listDimension = new Dimension(450, 150);

   /**
    * Object which we are replacing from one place to another within the list by dragging it.
    */
   protected XMLElementView movingElement;

   /**
    * Index of the object which we are replacing from one place to another within the list by
    * dragging it.
    */
   protected int movingElementPosition;

   /**
    * The new index of the object which we are replacing from one place to another within the list
    * by dragging it.
    */
   protected int newMovingElementPosition;

   /** Indicates if object is being dragged. */
   protected boolean dragging = false;

   /**
    * Indicates if the code for changing object position within the list is executed.
    */
   protected boolean changing = false;

   protected JList allParam;

   protected JPanel toolbox;

   protected InlinePanel ipc;
   
   public XMLBasicListPanel(InlinePanel ipc, XMLCollection myOwner, List elementsToShow, String title,
         boolean hasBorder, boolean hasEmptyBorder, final boolean enableEditing, boolean minDimension) {

      super(ipc, myOwner, title, true, hasBorder, hasEmptyBorder);
      this.ipc=ipc;
      
      myOwner.addListener(this);
      myOwner.setNotifyListeners(true);

      allParam = createList();
      setupList(enableEditing);
      fillListContent(elementsToShow);

      JScrollPane scrollParam = new JScrollPane();
      scrollParam.setAlignmentX(Component.LEFT_ALIGNMENT);
      //scrollParam.setAlignmentY(Component.TOP_ALIGNMENT);

      scrollParam.setViewportView(allParam);
      if (!minDimension) {
         scrollParam.setPreferredSize(new Dimension(listDimension));
      } else {
         scrollParam.setPreferredSize(new Dimension(minimalDimension));
      }

      toolbox = createToolbar();
      JPanel paneAndArrows = new JPanel();
      paneAndArrows.setLayout(new BoxLayout(paneAndArrows, BoxLayout.X_AXIS));
      paneAndArrows.add(scrollParam);

//      JPanel p = createArrowPanel();
//      paneAndArrows.add(Box.createRigidArea(new Dimension(5, 0)));
//      paneAndArrows.add(p);

      add(toolbox);
      add(Box.createVerticalStrut(3));
      add(paneAndArrows);

      adjustActions();
   }

   public boolean isItemChangingPosition() {
      return (changing || dragging);
   }

   public JList getList() {
      return allParam;
   }

   public XMLElement getSelectedElement() {
      if (allParam.getSelectedIndex() == -1)
         return null;

      return ((XMLElementView) allParam.getSelectedValue()).getElement();
   }

   public boolean setSelectedElement(XMLElement el) {
      int selIndex = -1;
      XMLElementView ev = getRow(el);
      for (int i = 0; i < allParam.getModel().getSize(); i++) {
         XMLElementView elat = (XMLElementView) allParam.getModel().getElementAt(i);
         if (ev.equals(elat)) {
            selIndex = i;
            break;
         }
      }

      if (selIndex != -1) {
         allParam.setSelectedIndex(selIndex);
      }
      return (selIndex!=-1);
   }

   protected void moveItem(int upOrDown) {
      newMovingElementPosition = movingElementPosition;
      if (newMovingElementPosition == -1) {
         return;
      } else if (upOrDown == 0) {
         newMovingElementPosition--;
      } else {
         newMovingElementPosition++;
      }

      moveItem();
   }

   protected void moveItem() {
      changing = true;
      DefaultListModel listModel = (DefaultListModel) allParam.getModel();
      XMLCollection owncol = (XMLCollection) getOwner();
      int rowCnt = listModel.getSize();
      if (movingElement == null || movingElementPosition == -1 || newMovingElementPosition == -1
            || newMovingElementPosition == movingElementPosition || (rowCnt - 1) < movingElementPosition
            || (rowCnt - 1) < newMovingElementPosition || !owncol.contains(movingElement.getElement())) {
         changing = false;
         return;
      }

      XMLCollection col = (XMLCollection) getOwner();
      if (JaWEManager.getInstance().getJaWEController().canRepositionElement(col, movingElement.getElement())) {
         XMLElement currentElementAtPosition = ((XMLElementView) listModel.getElementAt(newMovingElementPosition))
               .getElement();
         int newpos = owncol.indexOf(currentElementAtPosition);

         listModel.remove(movingElementPosition);
         listModel.add(newMovingElementPosition, movingElement);

         JaWEController jc = JaWEManager.getInstance().getJaWEController();
         jc.startUndouableChange();
         owncol.reposition(movingElement.getElement(), newpos);
         List toSelect = new ArrayList();
         toSelect.add(movingElement.getElement());
         jc.endUndouableChange(toSelect);

         try {
            allParam.setSelectedIndex(newMovingElementPosition);
         } catch (Exception ex) {
         }

         movingElementPosition = newMovingElementPosition;
      }
      changing = false;
   }

   protected Action newElementAction = new AbstractAction(JaWEActions.NEW_ACTION) {
      public void actionPerformed(ActionEvent ae) {
         JaWEController jc = JaWEManager.getInstance().getJaWEController();

         XMLCollection col = (XMLCollection) getOwner();
         XMLElement newEl = JaWEManager.getInstance().getXPDLObjectFactory().createXPDLObject(col, null, false);
         boolean isForModal=PanelUtilities.isForModalDialog(newEl);
         if (!isForModal && ipc.isModified()) {
            int sw=ipc.showModifiedWarning();
            if(sw == JOptionPane.CANCEL_OPTION || (sw==JOptionPane.YES_OPTION && ipc.isModified())) {
               return;
            }
         }
               
         boolean updInProg=false;
         if (isForModal) {
            StandardXPDLElementEditor ed = new StandardXPDLElementEditor();
            ed.editXPDLElement(newEl);                  
            boolean statOK=(ed.getStatus()==StandardXPDLElementEditor.STATUS_OK);
            boolean canIns=true;
            if (statOK) {
               canIns=jc.canInsertElement(col, newEl);
            }
            if (!statOK || !canIns) {
               if (!canIns) {
                  jc.getJaWEFrame().message(ed.getLanguageDependentString("WarningCannotInsertElement"),JOptionPane.WARNING_MESSAGE);
               }
               return;
            }
            updInProg=true;
         }
         jc.startUndouableChange();
         col.add(newEl);
         List temp = new ArrayList();
         temp.add(newEl);
         jc.endUndouableChange(temp);
         if (updInProg) {
            setSelectedElement(newEl);
         }

         adjustActions();
      }
   };

   protected Action editElementAction = new AbstractAction(JaWEActions.EDIT_PROPERTIES_ACTION) {
      public void actionPerformed(ActionEvent ae) {
         XMLElement editElement = getSelectedElement();
         if (editElement != null) {
            if (ipc.isModified()) {
               int sw=ipc.showModifiedWarning();
               if( sw == JOptionPane.CANCEL_OPTION || (sw==JOptionPane.YES_OPTION && ipc.isModified())) {