com.netxforge.netxstudio.screens.actions.CompareAction.java Source code

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Here is the source code for com.netxforge.netxstudio.screens.actions.CompareAction.java

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/*******************************************************************************
 * Copyright (c) 1 mrt. 2014 NetXForge.
 * 
 * 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/>
 * 
 * Contributors: Christophe Bouhier - initial API and implementation and/or
 * initial documentation
 *******************************************************************************/
package com.netxforge.netxstudio.screens.actions;

import java.util.List;

import org.eclipse.emf.cdo.common.revision.CDORevision;
import org.eclipse.emf.cdo.common.revision.delta.CDORevisionDelta;
import org.eclipse.jface.viewers.IStructuredSelection;
import org.eclipse.swt.widgets.Display;

import com.google.common.collect.Lists;
import com.netxforge.netxstudio.screens.FeatureDeltaDialog;
import com.netxforge.screens.editing.base.actions.BaseSelectionListenerAction;

public class CompareAction extends BaseSelectionListenerAction {

    public CompareAction(String text) {
        super(text);
    }

    @Override
    protected boolean updateSelection(IStructuredSelection selection) {
        System.out.println(selection);
        return selection.size() == 2;
    }

    @Override
    public void run() {
        @SuppressWarnings({ "unchecked", "rawtypes" })
        List twoSelectionList = Lists.newArrayList(this.getStructuredSelection().iterator());
        CDORevision rev = (CDORevision) twoSelectionList.get(0);
        CDORevision rev2 = (CDORevision) twoSelectionList.get(1);

        try {
            CDORevisionDelta delta = rev.compare(rev2);
            FeatureDeltaDialog featureDeltaDialog = new FeatureDeltaDialog(Display.getDefault().getActiveShell());
            featureDeltaDialog.setDelta(delta);
            featureDeltaDialog.setDeltaInfo("version: " + rev.getVersion() + " with version: " + rev2.getVersion());
            featureDeltaDialog.setBlockOnOpen(true);
            featureDeltaDialog.open();
        } catch (IllegalStateException iae) {
            // compare could throw this: java.lang.IllegalStateException: List
            // contains proxy elements
            // see bug: https://bugs.eclipse.org/bugs/show_bug.cgi?id=337054
        }
    }
}