org.goko.log.part.model.ProblemTreeContentProvider.java Source code

Introduction

Here is the source code for org.goko.log.part.model.ProblemTreeContentProvider.java

Source

/*
 *
 *   Goko
 *   Copyright (C) 2013  PsyKo
 *
 *   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 org.goko.log.part.model;

import java.beans.PropertyChangeEvent;
import java.beans.PropertyChangeListener;
import java.util.ArrayList;
import java.util.List;

import org.apache.commons.collections.CollectionUtils;
import org.eclipse.jface.viewers.ITreeContentProvider;
import org.eclipse.jface.viewers.Viewer;
import org.eclipse.swt.widgets.Display;

public class ProblemTreeContentProvider implements ITreeContentProvider, PropertyChangeListener {
    Viewer viewer;

    @Override
    public void dispose() {
    }

    @Override
    public void inputChanged(Viewer viewer, Object oldInput, Object newInput) {
        this.viewer = viewer;
        if (newInput instanceof ProblemTreeContent) {
            ((ProblemTreeContent) newInput).addPropertyChangeListener(this);
        }
    }

    @Override
    public Object[] getElements(Object inputElement) {
        List<LogLevelNode> lstEvent = new ArrayList<LogLevelNode>();
        if (inputElement instanceof ProblemTreeContent) {
            addIfNonEmpty(((ProblemTreeContent) inputElement).getErrors(), lstEvent);
            addIfNonEmpty(((ProblemTreeContent) inputElement).getWarnings(), lstEvent);
        }
        return lstEvent.toArray();
    }

    protected void addIfNonEmpty(LogLevelNode node, List<LogLevelNode> lstNode) {
        if (CollectionUtils.isNotEmpty(node.getMessages())) {
            lstNode.add(node);
        }
    }

    @Override
    public Object[] getChildren(Object parentElement) {
        if (parentElement instanceof LogLevelNode) {
            return ((LogLevelNode) parentElement).getMessages().toArray();
        }
        return null;
    }

    @Override
    public Object getParent(Object element) {
        return null;
    }

    @Override
    public boolean hasChildren(Object element) {
        if (element instanceof LogLevelNode) {
            return CollectionUtils.isNotEmpty(((LogLevelNode) element).getMessages());
        }
        return false;
    }

    /** (inheritDoc)
     * @see java.beans.PropertyChangeListener#propertyChange(java.beans.PropertyChangeEvent)
     */
    @Override
    public void propertyChange(PropertyChangeEvent arg0) {
        if (!viewer.getControl().isDisposed()) {
            Display.getDefault().asyncExec(new Runnable() {

                @Override
                public void run() {
                    viewer.refresh();
                }
            });
        }
    }

}