VOLUME.java

/*
 * Copyright (c) 2004-2011 Marco Maccaferri and others.
 * 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:
 *     Marco Maccaferri - initial API and implementation
 */

package org.eclipsetrader.ui.internal.charts;

import java.util.Date;

import org.eclipse.core.runtime.CoreException;
import org.eclipse.core.runtime.IAdaptable;
import org.eclipse.core.runtime.IConfigurationElement;
import org.eclipse.core.runtime.IExecutableExtension;
import org.eclipsetrader.core.charts.DataSeries;
import org.eclipsetrader.core.charts.IDataSeries;
import org.eclipsetrader.core.feed.IOHLC;
import org.eclipsetrader.ui.charts.HistogramBarChart;
import org.eclipsetrader.ui.charts.IChartObject;
import org.eclipsetrader.ui.charts.IChartObjectFactory;
import org.eclipsetrader.ui.charts.IChartParameters;

public class VOLUME implements IChartObjectFactory, IExecutableExtension {

    private String id;
    private String name;

    private static class ValueWrapper implements IAdaptable {

        private IOHLC ohlc;

        public ValueWrapper(IOHLC ohlc) {
            this.ohlc = ohlc;
        }

        /* (non-Javadoc)
         * @see org.eclipse.core.runtime.IAdaptable#getAdapter(java.lang.Class)
         */
        @Override
        @SuppressWarnings({
            "unchecked", "rawtypes"
        })
        public Object getAdapter(Class adapter) {
            if (adapter.isAssignableFrom(Date.class)) {
                return ohlc.getDate();
            }
            if (adapter.isAssignableFrom(Number.class)) {
                return ohlc.getVolume();
            }
            if (adapter.isAssignableFrom(getClass())) {
                return this;
            }
            return null;
        }
    }

    public VOLUME() {
    }

    /* (non-Javadoc)
     * @see org.eclipse.core.runtime.IExecutableExtension#setInitializationData(org.eclipse.core.runtime.IConfigurationElement, java.lang.String, java.lang.Object)
     */
    @Override
    public void setInitializationData(IConfigurationElement config, String propertyName, Object data) throws CoreException {
        id = config.getAttribute("id");
        name = config.getAttribute("name");
    }

    /* (non-Javadoc)
     * @see org.eclipsetrader.charts.ui.indicators.IChartIndicator#getId()
     */
    @Override
    public String getId() {
        return id;
    }

    /* (non-Javadoc)
     * @see org.eclipsetrader.charts.ui.indicators.IChartIndicator#getName()
     */
    @Override
    public String getName() {
        return name;
    }

    /* (non-Javadoc)
     * @see org.eclipsetrader.ui.charts.IChartObjectFactory#createObject(org.eclipsetrader.core.charts.IDataSeries)
     */
    @Override
    public IChartObject createObject(IDataSeries source) {
        if (source != null) {
            IAdaptable[] sourceValues = source.getValues();

            ValueWrapper[] values = new ValueWrapper[sourceValues.length];
            for (int i = 0; i < values.length; i++) {
                values[i] = new ValueWrapper((IOHLC) sourceValues[i].getAdapter(IOHLC.class));
            }

            IDataSeries result = new DataSeries(getName(), values);
            return new HistogramBarChart(result);
        }
        return null;
    }

    /* (non-Javadoc)
     * @see org.eclipsetrader.ui.charts.IChartObjectFactory#getParameters()
     */
    @Override
    public IChartParameters getParameters() {
        return null;
    }

    /* (non-Javadoc)
     * @see org.eclipsetrader.ui.charts.IChartObjectFactory#setParameters(org.eclipsetrader.ui.charts.IChartParameters)
     */
    @Override
    public void setParameters(IChartParameters parameters) {
        name = parameters.hasParameter("name") ? parameters.getString("name") : name;
    }
}