Ptidej-v5.2-master/POM Tests/data/ArgoUML_0.28/src/org/argouml/uml/ui/foundation/core/UMLAssociationConnectionListModel.java
// $Id: UMLAssociationConnectionListModel.java 12801 2007-06-09 15:49:57Z mvw $
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package org.argouml.uml.ui.foundation.core;

import java.util.ArrayList;
import java.util.Collection;
import java.util.Iterator;
import java.util.List;

import org.argouml.model.Model;
import org.argouml.uml.ui.UMLModelElementOrderedListModel2;

/**
 * The list model for the connections of the association. <p>
 *
 * The specialty of this list model, is that it need to be aware
 * of name changes in the ends connected to the association.
 * Most other listmodels only listen to
 * model changes in one UML element, but in this case, we also have to listen to
 * changes in some related elements. <p>
 *
 * Why is this case different: because it is possible to modify the
 * associationend names on the diagram, without changing the target - i.e.
 * the target remains the association throughout this modification.
 *
 * @author jaap.branderhorst@xs4all.nl
 * @since Jan 4, 2003
 */
public class UMLAssociationConnectionListModel
    extends UMLModelElementOrderedListModel2 {

    private Collection others;

    /**
     * Constructor for UMLModelElementClientDependencyListModel.
     */
    public UMLAssociationConnectionListModel() {
        super("connection");
    }

     /*
     * @see org.argouml.uml.ui.UMLModelElementListModel2#addOtherModelEventListeners(java.lang.Object)
     */
    protected void addOtherModelEventListeners(Object newTarget) {
        super.addOtherModelEventListeners(newTarget);
        /* Make a copy of the modelelements: */
        others = new ArrayList(Model.getFacade().getConnections(newTarget));
        Iterator i = others.iterator();
        while (i.hasNext()) {
            Object end = i.next();
            Model.getPump().addModelEventListener(this, end, "name");
        }
    }

    /*
     * @see org.argouml.uml.ui.UMLModelElementListModel2#removeOtherModelEventListeners(java.lang.Object)
     */
    protected void removeOtherModelEventListeners(Object oldTarget) {
        super.removeOtherModelEventListeners(oldTarget);
        Iterator i = others.iterator();
        while (i.hasNext()) {
            Object end = i.next();
            Model.getPump().removeModelEventListener(this, end, "name");
        }
        others.clear();
    }

    /*
     * @see org.argouml.uml.ui.UMLModelElementListModel2#buildModelList()
     */
    protected void buildModelList() {
        if (getTarget() != null) {
            setAllElements(Model.getFacade().getConnections(getTarget()));
        }
    }

    /*
     * @see org.argouml.uml.ui.UMLModelElementListModel2#isValidElement(Object)
     */
    protected boolean isValidElement(Object o) {
        return Model.getFacade().isAAssociationEnd(o)
            && Model.getFacade().getConnections(getTarget()).contains(o);
    }

    /*
     * @see org.argouml.uml.ui.UMLModelElementOrderedListModel2#moveDown(int)
     */
    protected void moveDown(int index) {
        Object assoc = getTarget();
        /* Since we are UML 1.4, this is surely a List! */
        List c = (List) Model.getFacade().getConnections(assoc);
        if (index < c.size() - 1) {
            Object mem = c.get(index);
            Model.getCoreHelper().removeConnection(assoc, mem);
            Model.getCoreHelper().addConnection(assoc, index + 1, mem);
        }
    }

    /**
     * @see org.argouml.uml.ui.UMLModelElementOrderedListModel2#moveToBottom(int)
     */
    @Override
    protected void moveToBottom(int index) {
        Object assoc = getTarget();
        /* Since we are UML 1.4, this is surely a List! */
        List c = (List) Model.getFacade().getConnections(assoc);
        if (index < c.size() - 1) {
            Object mem1 = c.get(index);
            Model.getCoreHelper().removeConnection(assoc, mem1);
            Model.getCoreHelper().addConnection(assoc, c.size() - 1, mem1);
        }
    }

    /**
     * @see org.argouml.uml.ui.UMLModelElementOrderedListModel2#moveToTop(int)
     */
    @Override
    protected void moveToTop(int index) {
        Object assoc = getTarget();
        /* Since we are UML 1.4, this is surely a List! */
        List c = (List) Model.getFacade().getConnections(assoc);
        if (index > 0) {
            Object mem1 = c.get(index);
            Model.getCoreHelper().removeConnection(assoc, mem1);
            Model.getCoreHelper().addConnection(assoc, 0, mem1);
        }
    }
}
