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* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
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*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing,
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* KIND, either express or implied. See the License for the
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package org.apache.cayenne.modeler.action;
import java.awt.event.ActionEvent;
import org.apache.cayenne.map.DbEntity;
import org.apache.cayenne.map.DbRelationship;
import org.apache.cayenne.map.ObjEntity;
import org.apache.cayenne.map.ObjRelationship;
import org.apache.cayenne.map.Relationship;
import org.apache.cayenne.map.event.MapEvent;
import org.apache.cayenne.map.event.RelationshipEvent;
import org.apache.cayenne.modeler.Application;
import org.apache.cayenne.modeler.ProjectController;
import org.apache.cayenne.modeler.dialog.ConfirmRemoveDialog;
import org.apache.cayenne.modeler.undo.RemoveRelationshipUndoableEdit;
import org.apache.cayenne.modeler.util.ProjectUtil;
import org.apache.cayenne.project.ProjectPath;
/**
* Removes currently selected relationship from either the DbEntity or
* ObjEntity.
*
*/
public class RemoveRelationshipAction extends RemoveAction implements
MultipleObjectsAction {
private final static String ACTION_NAME = "Remove Relationship";
/**
* Name of action if multiple rels are selected
*/
private final static String ACTION_NAME_MULTIPLE = "Remove Relationships";
public static String getActionName() {
return ACTION_NAME;
}
public String getActionName(boolean multiple) {
return multiple ? ACTION_NAME_MULTIPLE : ACTION_NAME;
}
public RemoveRelationshipAction(Application application) {
super(ACTION_NAME, application);
}
/**
* Returns <code>true</code> if last object in the path contains a removable
* relationship.
*/
@Override
public boolean enableForPath(ProjectPath path) {
if (path == null) {
return false;
}
return path.getObject() instanceof Relationship;
}
@Override
public void performAction(ActionEvent e, boolean allowAsking) {
ConfirmRemoveDialog dialog = getConfirmDeleteDialog(allowAsking);
ProjectController mediator = getProjectController();
ObjRelationship[] rels = getProjectController()
.getCurrentObjRelationships();
if (rels != null && rels.length > 0) {
if ((rels.length == 1 && dialog.shouldDelete("ObjRelationship",
rels[0].getName()))
|| (rels.length > 1 && dialog
.shouldDelete("selected ObjRelationships"))) {
ObjEntity entity = mediator.getCurrentObjEntity();
removeObjRelationships(entity, rels);
Application.getInstance().getUndoManager().addEdit(
new RemoveRelationshipUndoableEdit(entity, rels));
}
} else {
DbRelationship[] dbRels = getProjectController()
.getCurrentDbRelationships();
if (dbRels != null && dbRels.length > 0) {
if ((dbRels.length == 1 && dialog.shouldDelete(
"DbRelationship", dbRels[0].getName()))
|| (dbRels.length > 1 && dialog
.shouldDelete("selected DbRelationships"))) {
DbEntity entity = mediator.getCurrentDbEntity();
removeDbRelationships(entity, dbRels);
Application.getInstance().getUndoManager().addEdit(
new RemoveRelationshipUndoableEdit(entity, dbRels));
}
}
}
}
public void removeObjRelationships(ObjEntity entity, ObjRelationship[] rels) {
ProjectController mediator = getProjectController();
for (ObjRelationship rel : rels) {
entity.removeRelationship(rel.getName());
RelationshipEvent e = new RelationshipEvent(Application.getFrame(),
rel, entity, MapEvent.REMOVE);
mediator.fireObjRelationshipEvent(e);
}
}
public void removeDbRelationships(DbEntity entity, DbRelationship[] rels) {
ProjectController mediator = getProjectController();
for (DbRelationship rel : rels) {
entity.removeRelationship(rel.getName());
RelationshipEvent e = new RelationshipEvent(Application.getFrame(),
rel, entity, MapEvent.REMOVE);
mediator.fireDbRelationshipEvent(e);
}
ProjectUtil.cleanObjMappings(mediator.getCurrentDataMap());
}
}