jaweselectionmanager.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

/**
 * Miroslav Popov, Sep 14, 2005 [e-mail]
 */
package org.enhydra.jawe.base.controller;

import java.util.ArrayList;
import java.util.HashSet;
import java.util.Iterator;
import java.util.List;
import java.util.Set;

import org.enhydra.jawe.XPDLElementChangeInfo;
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.XMLUtil;
import org.enhydra.shark.xpdl.elements.Activities;
import org.enhydra.shark.xpdl.elements.Activity;
import org.enhydra.shark.xpdl.elements.ActivitySet;
import org.enhydra.shark.xpdl.elements.Application;
import org.enhydra.shark.xpdl.elements.DataField;
import org.enhydra.shark.xpdl.elements.FormalParameter;
import org.enhydra.shark.xpdl.elements.Package;
import org.enhydra.shark.xpdl.elements.Participant;
import org.enhydra.shark.xpdl.elements.Transition;
import org.enhydra.shark.xpdl.elements.TypeDeclaration;
import org.enhydra.shark.xpdl.elements.WorkflowProcess;
import org.enhydra.shark.xpdl.elements.WorkflowProcesses;

/**
 * @author Miroslav Popov
 * @author Sasa Bojanic
 */
public class JaWESelectionManager {

   protected JaWEController jc;

   protected List selectedElements = new ArrayList();

   protected Package workingPKG;

   protected WorkflowProcess workingWP;

   protected ActivitySet workingAS;

   public JaWESelectionManager(JaWEController controller) {
      jc = controller;
   }

   public void clear() {
      selectedElements = new ArrayList();
      workingPKG = null;
      workingWP = null;
      workingAS = null;
   }

   public List getSelectedElements() {
      return new ArrayList(selectedElements);
   }

   public XMLElement getSelectedElement() {
      if (selectedElements.size() > 0) {
         return (XMLElement) selectedElements.get(0);
      }
      return null;
   }

   public void setSelection(XMLElement el, boolean setPkgAndWpAndas) {
      selectedElements = new ArrayList();
      if (el != null)
         selectedElements.add(el);

      if (setPkgAndWpAndas)
         setPkgWpAndAs();

      XPDLElementChangeInfo info = jc.createInfo(el, XPDLElementChangeInfo.SELECTED);
      jc.sendEvent(info);
   }

   public void setSelection(List selection, boolean setPkgAndWpAndas) {
      if (checkSelection(selection)) {
         if (selection == null) {
            selectedElements = new ArrayList();
         } else {
            selectedElements = selection;
         }
      } else {
         selectedElements = new ArrayList();
         selectedElements.add(selection.get(selection.size() - 1));
      }

      if (setPkgAndWpAndas)
         setPkgWpAndAs();

      if (selectedElements.size() == 0)
         return;

      List temp = new ArrayList(selectedElements);
      XMLElement firstEl = (XMLElement) temp.get(0);
      XMLElement selOwner = firstEl;
      if (temp.size() > 1) {
         selOwner = firstEl.getParent();
         if (selOwner == null) {
            selOwner = firstEl;
         }
      } else {
         temp.clear();
      }
      XPDLElementChangeInfo info = jc.createInfo(selOwner,
                                                 temp,
                                                 XPDLElementChangeInfo.SELECTED);
      jc.sendEvent(info);
   }

   public void addToSelection(XMLElement el) {
      List temp = new ArrayList();
      temp.add(el);
      addToSelection(temp);
   }

   public void addToSelection(List elements) {
      if (canBeAddedToSelection(elements)) {
         selectedElements.addAll(elements);
      } else {
         selectedElements = new ArrayList();
         selectedElements.add(elements.get(elements.size() - 1));
      }

      setPkgWpAndAs();

      if (selectedElements.size() == 0)
         return;

      List temp = new ArrayList(selectedElements);
      XMLElement firstEl = (XMLElement) temp.get(0);
      XMLElement selOwner = firstEl;
      if (temp.size() > 1) {
         selOwner = firstEl.getParent();
         if (selOwner == null) {
            selOwner = firstEl;
         }
      } else {
         temp.clear();
      }
      XPDLElementChangeInfo info = jc.createInfo(selOwner,
                                                 temp,
                                                 XPDLElementChangeInfo.SELECTED);
      jc.sendEvent(info);
   }

   public void removeFromSelection(XMLElement el) {
      List temp = new ArrayList();
      temp.add(el);
      removeFromSelection(temp);
   }

   public void removeFromSelection(List elements) {
      Set elementsToRemove = new HashSet();

      for (int i = 0; i < elements.size(); i++) {
         XMLElement el = (XMLElement) elements.get(i);

         // for (int j = 0; j < selectedElements.size(); j++) {
         // XMLElement element = (XMLElement)selectedElements.get(j);
         //
         // XMLElement parent = element.getParent();
         // while (parent != null && parent != el) {
         // parent = parent.getParent();
         // }
         //            
         // if (parent != null)
         // elementsToRemove.add(element);
         // }

         elementsToRemove.add(el);
      }

      for (Iterator it = elementsToRemove.iterator(); it.hasNext();) {
         selectedElements.remove(it.next());
      }

      setPkgWpAndAs();
      jc.adjustActions();
   }

   protected void setPkgWpAndAs() {
      if (selectedElements.size() != 0) {
         XMLElement el = (XMLElement) selectedElements.get(0);
         workingPKG = XMLUtil.getPackage(el);
         if (workingPKG != null) {
            WorkflowProcess oldWp = workingWP;
            if (oldWp != null) {
               WorkflowProcesses wprs = (WorkflowProcesses) oldWp.getParent();
               if (!wprs.contains(oldWp)) {
                  oldWp = null;
               }
            }
            workingWP = XMLUtil.getWorkflowProcess(el);
            if (workingWP == null) {
               if (oldWp != null && XMLUtil.getPackage(oldWp) == workingPKG) {
                  workingWP = oldWp;
               } else {
                  List wps = workingPKG.getWorkflowProcesses().toElements();
                  if (wps.size() != 0) {
                     workingWP = (WorkflowProcess) wps.get(0);
                  }
               }
            }
            workingAS = XMLUtil.getActivitySet(el);
         } else {
            workingWP = null;
            workingAS = null;
         }
      } else {
         workingPKG = null;
         workingWP = null;
         workingAS = null;
      }
   }

   public Package getWorkingPKG() {
      return workingPKG;
   }

   public String getWorkingPackageId() {
      if (workingPKG != null) {
         return workingPKG.getId();
      }
      return null;
   }

   public WorkflowProcess getWorkingProcess() {
      return workingWP;
   }

   public String getWorkingWorkflowProcessId() {
      if (workingWP != null) {
         return workingWP.getId();
      }
      return null;
   }

   public ActivitySet getWorkingActivitySet() {
      return workingAS;
   }

   public String getWorkingActivitySetId() {
      if (workingAS != null) {
         return workingAS.getId();
      }
      return null;
   }

   public boolean canBeAddedToSelection(List selection) {
      List temp = new ArrayList(selectedElements);
      temp.addAll(selection);

      return checkSelection(temp);
   }

   public boolean checkSelection(List selection) {
      if (selection == null) {
         return true;
      }

      if (selection.size() <= 1) {
         return true;
      }

      boolean hasActivity = false;
      boolean hasTransition = false;
      boolean hasSingleSelectionElement = false;
      boolean hasOther = false;

      Set parents = new HashSet();
      Set classes = new HashSet();

      for (int i = 0; i < selection.size(); i++) {
         XMLElement el = (XMLElement) selection.get(i);