org.dresdenocl.modelbus.ui.internal.views.util.ModelSelectionAction.java Source code

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Here is the source code for org.dresdenocl.modelbus.ui.internal.views.util.ModelSelectionAction.java

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/*
Copyright (C) 2009 by Claas Wilke (claaswilke@gmx.net).
    
This file is part of the Model Bus GUI of Dresden OCL2 for Eclipse.
    
Dresden OCL2 for Eclipse is free software: you can redistribute it and/or modify 
it under the terms of the GNU Lesser General Public License as published by the 
Free Software Foundation, either version 3 of the License, or (at your option)
any later version.
    
Dresden OCL2 for Eclipse 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 Lesser General Public License 
for more details.
    
You should have received a copy of the GNU Lesser General Public License along 
with Dresden OCL2 for Eclipse. If not, see <http://www.gnu.org/licenses/>.
 */
package org.dresdenocl.modelbus.ui.internal.views.util;

import org.apache.commons.lang.builder.ToStringBuilder;
import org.apache.commons.lang.builder.ToStringStyle;
import org.eclipse.jface.action.Action;
import org.eclipse.jface.action.IAction;
import org.eclipse.jface.resource.ImageDescriptor;

import org.dresdenocl.model.IModel;
import org.dresdenocl.model.metamodel.IMetamodel;
import org.dresdenocl.modelbus.ModelBusPlugin;
import org.dresdenocl.modelbus.metamodel.IMetamodelDescriptor;

/**
 * <p>
 * A {@link ModelSelectionAction} is an {@link Action} representing a registered
 * {@link IModel} which will set the input of the Models view to this
 * {@link IModel}.
 * </p>
 */
public class ModelSelectionAction extends Action implements IAction {

    /** The {@link IModel} represented by this {@link Action}. */
    private IModel model;

    /**
     * <p>
     * Creates a new {@link ModelSelectionAction}.
     * </p>
     * 
     * @param model
     *          The represented {@link IModel}.
     */
    public ModelSelectionAction(IModel model) {

        super(model.getDisplayName(), IAction.AS_RADIO_BUTTON);

        IMetamodel metaModel;

        /* Initialize this action. */
        this.model = model;

        metaModel = model.getMetamodel();

        /*
         * Eventually set the icon if the meta model. This is realized by an Eclipse
         * descriptor.
         */
        if (metaModel instanceof IMetamodelDescriptor) {

            ImageDescriptor imageDescriptor;
            imageDescriptor = ImageDescriptor.createFromURL(((IMetamodelDescriptor) metaModel).getIconURL());

            if (imageDescriptor == null) {
                imageDescriptor = ImageDescriptor.getMissingImageDescriptor();
            }
            // no else.

            this.setImageDescriptor(imageDescriptor);
        }
        // no else.

        /*
         * Set the string representation of the model as the action's id, in the
         * hope that it uniquely identifies the model.
         */
        this.setId(model.toString());
    }

    /*
     * (non-Javadoc)
     * @see org.eclipse.jface.action.Action#run()
     */
    @Override
    public void run() {

        // set the new active model
        ModelBusPlugin.getModelRegistry().setActiveModel(this.model);
    }

    /*
     * (non-Javadoc)
     * @see java.lang.Object#toString()
     */
    @Override
    public String toString() {

        String result;

        result = new ToStringBuilder(this, ToStringStyle.SHORT_PREFIX_STYLE).append("model", this.model).toString();

        return result;
    }
}