ChartViewItem.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.charts;

import java.util.UUID;

import org.eclipse.core.runtime.IAdaptable;
import org.eclipse.core.runtime.PlatformObject;
import org.eclipse.jface.resource.ImageDescriptor;
import org.eclipse.ui.model.IWorkbenchAdapter;
import org.eclipsetrader.core.charts.IDataSeries;
import org.eclipsetrader.core.views.IViewItem;
import org.eclipsetrader.core.views.IViewItemVisitor;

public class ChartViewItem extends PlatformObject implements IViewItem, IWorkbenchAdapter {

    private ChartRowViewItem parent;
    private String id;
    private IChartObjectFactory factory;
    private IChartObject object;

    public ChartViewItem(ChartRowViewItem parent, IChartObjectFactory factory, String id) {
        this.parent = parent;
        this.factory = factory;
        this.id = id;
    }

    public ChartViewItem(ChartRowViewItem parent, IChartObjectFactory factory) {
        this.parent = parent;
        this.factory = factory;
        this.id = UUID.randomUUID().toString();
    }

    public String getId() {
        return id;
    }

    /* (non-Javadoc)
     * @see org.eclipsetrader.core.views.IViewItem#getItemCount()
     */
    @Override
    public int getItemCount() {
        return 0;
    }

    /* (non-Javadoc)
     * @see org.eclipsetrader.core.views.IViewItem#getItems()
     */
    @Override
    public IViewItem[] getItems() {
        return null;
    }

    /* (non-Javadoc)
     * @see org.eclipsetrader.core.views.IViewItem#getParent()
     */
    @Override
    public IViewItem getParent() {
        return parent;
    }

    /* (non-Javadoc)
     * @see org.eclipsetrader.core.views.IViewItem#getValues()
     */
    @Override
    public IAdaptable[] getValues() {
        return null;
    }

    public IChartObjectFactory getFactory() {
        return factory;
    }

    public IChartObject getObject() {
        if (object == null && factory != null) {
            object = factory.createObject(getSourceDataSeries());
        }
        return object;
    }

    public void setObject(IChartObject object) {
        this.object = object;
    }

    /* (non-Javadoc)
     * @see org.eclipse.core.runtime.PlatformObject#getAdapter(java.lang.Class)
     */
    @Override
    @SuppressWarnings("unchecked")
    public Object getAdapter(Class adapter) {
        if (adapter.isAssignableFrom(IChartObject.class)) {
            if (object == null && factory != null) {
                object = factory.createObject(getSourceDataSeries());
            }
            return object;
        }
        if (object != null && adapter.isAssignableFrom(object.getClass())) {
            return object;
        }

        if (adapter.isAssignableFrom(IChartObjectFactory.class)) {
            return factory;
        }
        if (factory != null) {
            if (adapter.isAssignableFrom(factory.getClass())) {
                return factory;
            }
            if (factory instanceof IAdaptable) {
                Object o = ((IAdaptable) factory).getAdapter(adapter);
                if (o != null) {
                    return o;
                }
            }
        }

        if (adapter.isAssignableFrom(getClass())) {
            return this;
        }

        return super.getAdapter(adapter);
    }

    /* (non-Javadoc)
     * @see org.eclipse.ui.model.IWorkbenchAdapter#getChildren(java.lang.Object)
     */
    @Override
    public Object[] getChildren(Object o) {
        return null;
    }

    /* (non-Javadoc)
     * @see org.eclipse.ui.model.IWorkbenchAdapter#getImageDescriptor(java.lang.Object)
     */
    @Override
    public ImageDescriptor getImageDescriptor(Object object) {
        return null;
    }

    /* (non-Javadoc)
     * @see org.eclipse.ui.model.IWorkbenchAdapter#getLabel(java.lang.Object)
     */
    @Override
    public String getLabel(Object o) {
        return factory.getName();
    }

    /* (non-Javadoc)
     * @see org.eclipse.ui.model.IWorkbenchAdapter#getParent(java.lang.Object)
     */
    @Override
    public Object getParent(Object o) {
        return null;
    }

    protected IDataSeries getSourceDataSeries() {
        IViewItem parentItem = getParent();
        while (parentItem != null) {
            IDataSeries dataSeries = (IDataSeries) parentItem.getAdapter(IDataSeries.class);
            if (dataSeries != null) {
                return dataSeries;
            }
            parentItem = parentItem.getParent();
        }
        return null;
    }

    /* (non-Javadoc)
     * @see org.eclipsetrader.core.views.IViewItem#accept(org.eclipsetrader.core.views.IViewItemVisitor)
     */
    @Override
    public void accept(IViewItemVisitor visitor) {
        if (visitor.visit(this)) {
            IViewItem[] child = getItems();
            if (child != null) {
                for (int i = 0; i < child.length; i++) {
                    child[i].accept(visitor);
                }
            }
        }
    }
}