com.bluexml.side.Portal.modeler.diagram.actions.DeleteLinkPageLayoutAction.java Source code

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Here is the source code for com.bluexml.side.Portal.modeler.diagram.actions.DeleteLinkPageLayoutAction.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.Portal.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.Portal.modeler.PortalPlugin;
import com.bluexml.side.Portal.modeler.diagram.commands.delete.DeleteLinkPageLayoutActionCommand;
import com.bluexml.side.Portal.modeler.diagram.edit.PageEditPart;
import com.bluexml.side.Portal.modeler.diagram.edit.UseLayoutEditPart;
import com.bluexml.side.Portal.modeler.editor.ModelerContextMenuProvider;
import com.bluexml.side.portal.Page;
import com.bluexml.side.util.libs.ui.UIUtils;

public class DeleteLinkPageLayoutAction extends WorkbenchPartAction implements ISelectionChangedListener {
    public static String ID = "Unlink Layout";

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

    /**
     * @param part
     */
    public DeleteLinkPageLayoutAction(IWorkbenchPart part) {
        super(part);
        //setImageDescriptor(OblPlugin.getImageDescriptor("icons/actions/add.gif"));
    }

    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(PortalPlugin.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 UseLayoutEditPart) {
                //Get edit part and graph element
                UseLayoutEditPart useLayout = (UseLayoutEditPart) o;
                GraphEdge eo = (GraphEdge) useLayout.getModel();

                //Get source edit part
                PageEditPart pep = (PageEditPart) useLayout.getSource();

                //Get source model element
                Page p = (Page) Utils.getElement((GraphElement) pep.getModel());

                DeleteLinkPageLayoutActionCommand dlpac = new DeleteLinkPageLayoutActionCommand(p, eo);
                useLayout.getViewer().getEditDomain().getCommandStack().execute(dlpac);
            }
        }
    }

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

    /**
     * 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();
    }

}