com.nokia.s60ct.gui.actions.AddChildAction.java Source code

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Here is the source code for com.nokia.s60ct.gui.actions.AddChildAction.java

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/*
* Copyright (c) 2009 Nokia Corporation and/or its subsidiary(-ies). 
* All rights reserved.
* This component and the accompanying materials are made available
* under the terms of "Eclipse Public License v1.0"
* which accompanies this distribution, and is available
* at the URL "http://www.eclipse.org/legal/epl-v10.html".
*
* Initial Contributors:
* Nokia Corporation - initial contribution.
*
* Contributors:
*
* Description:
*
*/
package com.nokia.s60ct.gui.actions;

import org.eclipse.emf.common.command.Command;
import org.eclipse.emf.ecore.EClass;
import org.eclipse.emf.ecore.EObject;
import org.eclipse.emf.ecore.EReference;
import org.eclipse.emf.edit.command.AddCommand;
import org.eclipse.emf.edit.domain.AdapterFactoryEditingDomain;
import org.eclipse.emf.edit.domain.EditingDomain;
import org.eclipse.jface.action.IAction;
import org.eclipse.jface.viewers.ISelection;
import org.eclipse.jface.viewers.IStructuredSelection;
import org.eclipse.ui.IObjectActionDelegate;
import org.eclipse.ui.IWorkbenchPart;

import configurationemf.ConfigurationemfFactory;

public abstract class AddChildAction implements IObjectActionDelegate {
    protected EObject selectedObject = null;

    public AddChildAction() {
    }

    public void setActivePart(IAction action, IWorkbenchPart targetPart) {

    }

    public void run(IAction action) {
        if (isObjectReadOnly(selectedObject))
            return;
        createChild();

    }

    public void selectionChanged(IAction action, ISelection selection) {
        selectedObject = null;
        if (selection instanceof IStructuredSelection) {
            IStructuredSelection structedSelection = (IStructuredSelection) selection;
            if (structedSelection.size() > 0) {
                selectedObject = (EObject) structedSelection.getFirstElement();
            }
        }
        if (selectedObject != null && !isObjectReadOnly(selectedObject))
            action.setEnabled(true);
        else
            action.setEnabled(false);

    }

    //the function should set selectedChildAttribute, selectedROAttribute, childClass
    abstract protected boolean isObjectReadOnly(EObject object);

    abstract protected EReference getChildReference();

    abstract protected EClass getChildClass();

    private void createChild() {
        EditingDomain editingDomain = AdapterFactoryEditingDomain.getEditingDomainFor(selectedObject);
        Command command = AddCommand.create(editingDomain, selectedObject, getChildReference(),
                ConfigurationemfFactory.eINSTANCE.create(getChildClass()));
        if (command != null)
            editingDomain.getCommandStack().execute(command);
    }
}