/*
 * 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.views;

import org.eclipse.jface.action.Action;
import org.eclipse.jface.viewers.StructuredSelection;
import org.eclipse.ui.IViewPart;
import org.eclipsetrader.ui.charts.BaseChartViewer;
import org.eclipsetrader.ui.charts.ChartRowViewItem;
import org.eclipsetrader.ui.charts.ChartView;
import org.eclipsetrader.ui.charts.IChartEditorListener;
import org.eclipsetrader.ui.charts.IChartObject;
import org.eclipsetrader.ui.charts.IChartObjectFactory;
import org.eclipsetrader.ui.charts.IEditableChartObject;
import org.eclipsetrader.ui.internal.UIActivator;

public class ToolAction extends Action {

    private IViewPart viewPart;
    private String chartObjectId;

    private IChartObjectFactory factory;
    private IChartObject chartObject;

    private IChartEditorListener editorListener = new IChartEditorListener() {

        @Override
        public void applyEditorValue() {
            BaseChartViewer viewer = (BaseChartViewer) viewPart.getAdapter(BaseChartViewer.class);
            viewer.getEditor().removeListener(editorListener);

            handleApplyEditorValue();
        }

        @Override
        public void cancelEditor() {
            BaseChartViewer viewer = (BaseChartViewer) viewPart.getAdapter(BaseChartViewer.class);
            viewer.getEditor().removeListener(editorListener);

            handleCancelEditor();
        }
    };

    public ToolAction(String title, IViewPart viewPart, String chartObjectId) {
        super(title, AS_CHECK_BOX);
        setId(chartObjectId);
        this.viewPart = viewPart;
        this.chartObjectId = chartObjectId;
    }

    /* (non-Javadoc)
     * @see org.eclipse.jface.action.Action#run()
     */
    @Override
    public void run() {
        factory = UIActivator.getDefault().getChartObjectFactory(chartObjectId);
        if (factory != null) {
            chartObject = factory.createObject(null);
            if (chartObject instanceof IEditableChartObject) {
                BaseChartViewer viewer = (BaseChartViewer) viewPart.getAdapter(BaseChartViewer.class);
                viewer.getEditor().addListener(editorListener);
                viewer.activateEditor((IEditableChartObject) chartObject);
            }
        }
    }

    protected void handleApplyEditorValue() {
        BaseChartViewer viewer = (BaseChartViewer) viewPart.getAdapter(BaseChartViewer.class);

        IChartObject[] currentObject = viewer.getSelectedChartCanvas().getChartObject();
        int index = viewer.getSelectedChartCanvasIndex();

        if (index != -1) {
            IChartObject[] newObject = new IChartObject[currentObject.length + 1];
            System.arraycopy(currentObject, 0, newObject, 0, currentObject.length);
            newObject[currentObject.length] = chartObject;

            viewer.getSelectedChartCanvas().setChartObject(newObject);

            ChartView view = (ChartView) viewPart.getAdapter(ChartView.class);
            ((ChartRowViewItem) view.getItems()[index]).addFactory(factory);

            viewer.setSelection(new StructuredSelection(chartObject));
        }

        factory = null;
        chartObject = null;
        setChecked(false);
    }

    protected void handleCancelEditor() {
        factory = null;
        chartObject = null;
        setChecked(false);
    }

    protected IChartObjectFactory getFactory() {
        return factory;
    }
}