de.ovgu.featureide.ui.views.collaboration.action.DeleteAction.java Source code

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Here is the source code for de.ovgu.featureide.ui.views.collaboration.action.DeleteAction.java

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/* FeatureIDE - An IDE to support feature-oriented software development
 * Copyright (C) 2005-2012  FeatureIDE team, University of Magdeburg
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program. If not, see http://www.gnu.org/licenses/.
 *
 * See http://www.fosd.de/featureide/ for further information.
 */
package de.ovgu.featureide.ui.views.collaboration.action;

import java.util.List;

import org.eclipse.core.runtime.CoreException;
import org.eclipse.gef.ui.parts.GraphicalViewerImpl;
import org.eclipse.jface.action.Action;
import org.eclipse.jface.dialogs.MessageDialog;
import org.eclipse.jface.viewers.IStructuredSelection;
import org.eclipse.ui.ISharedImages;
import org.eclipse.ui.PlatformUI;

import de.ovgu.featureide.ui.UIPlugin;
import de.ovgu.featureide.ui.views.collaboration.editparts.ClassEditPart;
import de.ovgu.featureide.ui.views.collaboration.editparts.CollaborationEditPart;
import de.ovgu.featureide.ui.views.collaboration.editparts.RoleEditPart;
import de.ovgu.featureide.ui.views.collaboration.model.Class;
import de.ovgu.featureide.ui.views.collaboration.model.Collaboration;
import de.ovgu.featureide.ui.views.collaboration.model.Role;

/**
 *  Deletes a Object of the CollaborationDiagramm.
 * 
 * @author Constanze Adler
 * @author Stephan Besecke
 */
public class DeleteAction extends Action {

    private GraphicalViewerImpl viewer;
    private Object part;
    private String text;

    public DeleteAction(String text, GraphicalViewerImpl view) {
        this.text = text;
        viewer = view;
    }

    public void setEnabled(boolean enable) {
        IStructuredSelection selection = (IStructuredSelection) viewer.getSelection();
        part = selection.getFirstElement();
        if (!(part instanceof RoleEditPart || part instanceof ClassEditPart
                || part instanceof CollaborationEditPart)) {
            super.setText(text);
            super.setEnabled(false);
        } else {
            if (part instanceof RoleEditPart)
                super.setText(text + " Role");
            if (part instanceof ClassEditPart)
                super.setText(text + " Class");
            if (part instanceof CollaborationEditPart)
                super.setText(text + " Feature");
            super.setEnabled(true);
        }

        setImageDescriptor(
                PlatformUI.getWorkbench().getSharedImages().getImageDescriptor(ISharedImages.IMG_ETOOL_DELETE));

    }

    public void run() {
        MessageDialog messageDialog = new MessageDialog(null, "Delete Resources", null,
                "Are you sure you want to remove " + getDialogText(), MessageDialog.INFORMATION,
                new String[] { "OK", "Cancel" }, 0);
        if (messageDialog.open() != 0) {
            return;
        }
        if (part instanceof RoleEditPart) {
            Role role = ((RoleEditPart) part).getRoleModel();
            try {
                role.getRoleFile().delete(true, null);
            } catch (CoreException e) {
                UIPlugin.getDefault().logError(e);
            }
        } else if (part instanceof ClassEditPart) {
            Class c = ((ClassEditPart) part).getClassModel();
            List<Role> roles = c.getRoles();
            for (Role role : roles) {
                //if (part != null)
                try {
                    role.getRoleFile().delete(true, null);
                } catch (CoreException e) {
                    UIPlugin.getDefault().logError(e);
                }
            }

        } else if (part instanceof CollaborationEditPart) {
            Collaboration coll = ((CollaborationEditPart) part).getCollaborationModel();
            for (Role role : coll.getRoles()) {
                try {
                    role.getRoleFile().delete(true, null);
                } catch (CoreException e) {
                    UIPlugin.getDefault().logError(e);
                }
            }
        }

    }

    /**
     * @return A part specific message
     */
    private String getDialogText() {
        if (part instanceof RoleEditPart) {
            Role role = ((RoleEditPart) part).getRoleModel();
            return "the role of class '" + role.getName() + "' at feature '" + role.getCollaboration().getName()
                    + "'";
        } else if (part instanceof ClassEditPart) {
            Class c = ((ClassEditPart) part).getClassModel();
            return "all files of class '" + c.getName() + "'?";
        } else if (part instanceof CollaborationEditPart) {
            Collaboration coll = ((CollaborationEditPart) part).getCollaborationModel();
            return " all files of feature '" + coll.getName() + "'?";
        }
        return null;
    }

}