org.eclipse.papyrus.modelexplorer.actions.GenericTransformAction.java Source code

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Here is the source code for org.eclipse.papyrus.modelexplorer.actions.GenericTransformAction.java

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/***************************************************
 * Copyright (c) 2010 Atos Origin.
    
 * 
 * All rights reserved. This program and the accompanying materials
 * are made available under the terms of the Eclipse Public License v1.0
 * which accompanies this distribution, and is available at
 * http://www.eclipse.org/legal/epl-v10.html
 *
 * Contributors:
 * Atos Origin - Initial API and implementation
 *
 ****************************************************/
package org.eclipse.papyrus.modelexplorer.actions;

import org.eclipse.core.runtime.IStatus;
import org.eclipse.core.runtime.MultiStatus;
import org.eclipse.emf.common.notify.AdapterFactory;
import org.eclipse.emf.ecore.EClass;
import org.eclipse.emf.ecore.EObject;
import org.eclipse.emf.edit.provider.IItemLabelProvider;
import org.eclipse.emf.edit.ui.provider.ExtendedImageRegistry;
import org.eclipse.jface.action.Action;
import org.eclipse.jface.dialogs.ErrorDialog;
import org.eclipse.jface.dialogs.IDialogConstants;
import org.eclipse.jface.dialogs.MessageDialog;
import org.eclipse.jface.window.Window;
import org.eclipse.papyrus.modelexplorer.Activator;
import org.eclipse.papyrus.modelexplorer.preferences.INavigatorPreferenceConstants;
import org.eclipse.papyrus.ui.toolbox.dialog.InformationDialog;
import org.eclipse.swt.SWT;
import org.eclipse.swt.widgets.Display;

/**
 * GenericTransformAction is an action which transforms and EObject by changing
 * its eclass.
 */
public class GenericTransformAction extends Action {

    /** title of error dialog */
    private static final String ERROR_TITLE = "Impossible to continue transformation.";

    /** message in error dialog */
    private static final String ERROR_MESSAGE = "The transformation can not continue.\n"
            + "Some objects referencing your selection could not be able to reference the result of the transformation.\n"
            + "For UML and SysML, applied stereotypes could not be applicable on the result of the transformation.\n"
            + "Before performing the transformation please delete or unapply the elements listed bellow.";

    /** title of error dialog */
    private static final String WARNING_TITLE = "Warning: transformation command";

    /** WARNING_MESSAGE for transform command execution */
    private static final String WARNING_MESSAGE = "You are trying to transform an element typed %s into %s.\nThis operation will copy all the common elements between the two eclasses.\nDo you want to continue ?";

    /** The EClass to transform into. */
    private EClass targetEClass = null;

    /** The element to transform. */
    private EObject element;

    /**
     * Constructor for a new action.
     * 
     * @param transformationEClass
     *            the eclass element must be transformed into
     * @param adapterFactory
     *            the adapter factory for providing label image
     * @param elementToTransform
     *            the element to transform
     */
    public GenericTransformAction(EClass transformationEClass, AdapterFactory adapterFactory,
            EObject elementToTransform) {
        super(transformationEClass.getName());
        targetEClass = transformationEClass;
        element = elementToTransform;

        if (adapterFactory != null) {
            EObject tmpEobject = transformationEClass.getEPackage().getEFactoryInstance()
                    .create(transformationEClass);
            IItemLabelProvider provider = (IItemLabelProvider) adapterFactory.adapt(tmpEobject,
                    IItemLabelProvider.class);
            setImageDescriptor(ExtendedImageRegistry.INSTANCE.getImageDescriptor(provider.getImage(tmpEobject)));
        }
    }

    /**
     * Transform the element and update referencing diagrams.
     * 
     * @see org.eclipse.jface.action.Action#run()
     */
    @Override
    public void run() {
        GenericTransformer transformer = new GenericTransformer(element);
        MultiStatus messages = transformer.isTransformationPossible(targetEClass);
        if (messages != null && messages.getChildren().length == 0) {
            String message = String.format(WARNING_MESSAGE, this.element.eClass().getName(),
                    targetEClass.getName());
            InformationDialog dialog = new InformationDialog(Display.getDefault().getActiveShell(), WARNING_TITLE,
                    message, Activator.getDefault().getPreferenceStore(),
                    INavigatorPreferenceConstants.PREF_NAVIGATOR_TRANSFORM_INTO_SHOW_POPUP, SWT.YES | SWT.NO,
                    MessageDialog.INFORMATION,
                    new String[] { IDialogConstants.YES_LABEL, IDialogConstants.NO_LABEL });
            int result = dialog.open();
            if (result == SWT.YES || result == Window.OK) {
                transformer.transform(targetEClass);
            }
        } else {
            ErrorDialog errorDialog = new ErrorDialog(Display.getDefault().getActiveShell(), ERROR_TITLE,
                    ERROR_MESSAGE, messages, IStatus.WARNING);
            errorDialog.open();
        }
    }

}