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Java > Open Source Codes > org > objectstyle > cayenne > modeler > action > RemoveAttributeAction


1 /* ====================================================================
2  *
3  * The ObjectStyle Group Software License, version 1.1
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6  * Copyright (c) 2002-2005, Andrei (Andrus) Adamchik and individual authors
7  * of the software. All rights reserved.
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24  * and hosted on ObjectStyle Group web site (http://objectstyle.org/)."
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54  * <http://objectstyle.org/>.
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56
57 package org.objectstyle.cayenne.modeler.action;
58
59 import java.awt.event.ActionEvent JavaDoc;
60
61 import org.objectstyle.cayenne.map.Attribute;
62 import org.objectstyle.cayenne.modeler.Application;
63 import org.objectstyle.cayenne.project.ProjectPath;
64
65 /**
66  * Removes currently selected attribute from either the DbEntity or ObjEntity.
67  *
68  * @author Garry Watkins
69  */
70 public class RemoveAttributeAction extends RemoveAction {
71     private final static String JavaDoc ACTION_NAME = "Remove Attribute";
72     
73     public static String JavaDoc getActionName() {
74         return ACTION_NAME;
75     }
76
77     public RemoveAttributeAction(Application application) {
78         super(ACTION_NAME, application);
79     }
80     
81     /**
82      * Returns <code>true</code> if last object in the path contains a removable attribute.
83      */
84     public boolean enableForPath(ProjectPath path) {
85         if (path == null) {
86             return false;
87         }
88
89         Object JavaDoc lastObject = path.getObject();
90
91         return lastObject instanceof Attribute;
92     }
93
94     public void performAction(ActionEvent JavaDoc e) {
95         if (getProjectController().getCurrentObjAttribute() != null) {
96             removeObjAttribute();
97         }
98         else if (getProjectController().getCurrentDbAttribute() != null) {
99             removeDbAttribute();
100         }
101     }
102 }
103
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