Ptidej-v5.2-master/PADL Creator JavaFile (Eclipse) Tests/data/argouml/trunk/src_new/org/argouml/uml/diagram/ui/ActionAddExistingNode.java
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package org.argouml.uml.diagram.ui;

import java.awt.event.ActionEvent;

import org.argouml.kernel.ProjectManager;
import org.argouml.ui.ArgoDiagram;
import org.argouml.ui.targetmanager.TargetManager;
import org.tigris.gef.graph.MutableGraphModel;
import org.tigris.gef.undo.UndoableAction;

/**
* ActionAddExistingNode enables pasting of an existing node into a Diagram.
*
* @author Eugenio Alvarez
* Data Access Technologies.
*/
public class ActionAddExistingNode extends UndoableAction {

    /**
     * The UML object to be added to the diagram.
     */
    private Object object;

    /**
     * The Constructor.
     *
     * @param name the localized name of the action
     * @param o the node UML object to be added
     */
    public ActionAddExistingNode(String name, Object o) {
        super(name);
        object = o;
    }

    /**
     * @see javax.swing.Action#isEnabled()
     */
    public boolean isEnabled() {
        Object target = TargetManager.getInstance().getTarget();
        ArgoDiagram dia = ProjectManager.getManager().
            getCurrentProject().getActiveDiagram();
        if (dia == null) return false;
        MutableGraphModel gm = (MutableGraphModel) dia.getGraphModel();
        return gm.canAddNode(target);
    }

    /**
     * @see java.awt.event.ActionListener#actionPerformed(java.awt.event.ActionEvent)
     */
    public void actionPerformed(ActionEvent ae) {
        super.actionPerformed(ae);
        AddExistingNodeCommand cmd = new AddExistingNodeCommand(object);
        cmd.execute();
    }
} /* end class ActionAddExistingNode */
