com.bluexml.side.Class.modeler.diagram.actions.DeleteLinkClassGeneralizationAction.java Source code

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Here is the source code for com.bluexml.side.Class.modeler.diagram.actions.DeleteLinkClassGeneralizationAction.java

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/*
Copyright (C) 2007-2011  BlueXML - www.bluexml.com
    
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 3 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/>.
    
*/

package com.bluexml.side.Class.modeler.diagram.actions;

import org.eclipse.gef.ui.actions.WorkbenchPartAction;
import org.eclipse.jface.resource.ImageDescriptor;
import org.eclipse.jface.viewers.ISelection;
import org.eclipse.jface.viewers.ISelectionChangedListener;
import org.eclipse.jface.viewers.SelectionChangedEvent;
import org.eclipse.jface.viewers.StructuredSelection;
import org.eclipse.ui.IWorkbenchPart;
import org.topcased.modeler.di.model.GraphEdge;
import org.topcased.modeler.di.model.GraphElement;
import org.topcased.modeler.dialogs.ConfirmationDialog;
import org.topcased.modeler.editor.Modeler;
import org.topcased.modeler.utils.Utils;

import com.bluexml.side.Class.modeler.ClazzPlugin;
import com.bluexml.side.Class.modeler.diagram.commands.delete.DeleteLinkClassGeneralizationCommand;
import com.bluexml.side.Class.modeler.diagram.edit.ClazzEditPart;
import com.bluexml.side.Class.modeler.diagram.edit.GeneralizationEditPart;
import com.bluexml.side.clazz.Clazz;
import com.bluexml.side.util.libs.ui.UIUtils;

public class DeleteLinkClassGeneralizationAction extends WorkbenchPartAction implements ISelectionChangedListener {
    public static String ID = "Unlink Generalization";

    /**
     * The selected EditPart object
     */
    private ISelection selection;

    /**
     * @param part
     */
    public DeleteLinkClassGeneralizationAction(IWorkbenchPart part) {
        super(part);
    }

    protected void init() {
        setId(ID);
        setText("Delete From Model");
        // load Eclipse icon
        ImageDescriptor img = UIUtils.getImage("org.topcased.modeler", "/icons/deleteFromModel.gif"); //$NON-NLS-1$ //$NON-NLS-2$
        setImageDescriptor(img);
    }

    public void run() {
        Modeler modeler = (Modeler) getWorkbenchPart();
        ConfirmationDialog dialog = new ConfirmationDialog(ClazzPlugin.getActiveWorkbenchShell(),
                "Delete From Model", "Are you sure you want to delete these model elements ?",
                modeler.getPreferenceStore(), "deleteModelActionConfirm");
        int result = dialog.open();
        if (result != 0) {
            return;
        }

        StructuredSelection ss = (StructuredSelection) this.selection;
        for (Object o : ss.toList()) {
            if (o instanceof GeneralizationEditPart) {
                //Get edit part and graph element
                GeneralizationEditPart editPart = (GeneralizationEditPart) o;
                GraphEdge eo = (GraphEdge) editPart.getModel();

                //Get source and target edit part
                ClazzEditPart sp = (ClazzEditPart) editPart.getSource();
                ClazzEditPart tp = (ClazzEditPart) editPart.getTarget();

                //Get source and target model element
                Clazz cs = (Clazz) Utils.getElement((GraphElement) sp.getModel());
                Clazz ct = (Clazz) Utils.getElement((GraphElement) tp.getModel());

                DeleteLinkClassGeneralizationCommand dcgc = new DeleteLinkClassGeneralizationCommand(eo, cs, ct);
                editPart.getViewer().getEditDomain().getCommandStack().execute(dcgc);
            }
        }
    }

    /**
     * Determine if the action must appear in the context menu
     * 
     * @see org.eclipse.gef.ui.actions.WorkbenchPartAction#calculateEnabled()
     */
    protected boolean calculateEnabled() {
        return true;
    }

    /**
     * Sets the selected EditPart and refreshes the enabled state of this
     * action.
     * 
     * @param event
     * @see ISelectionChangedListener#selectionChanged(SelectionChangedEvent)
     */
    public void selectionChanged(SelectionChangedEvent event) {
        this.selection = event.getSelection();
    }

}