org.eclipse.birt.chart.reportitem.ui.actions.OpenChartTaskAction.java Source code

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Here is the source code for org.eclipse.birt.chart.reportitem.ui.actions.OpenChartTaskAction.java

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/*******************************************************************************
 * Copyright (c) 2004 Actuate Corporation.
 * 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:
 *  Actuate Corporation  - initial API and implementation
 *******************************************************************************/

package org.eclipse.birt.chart.reportitem.ui.actions;

import org.eclipse.birt.chart.model.Chart;
import org.eclipse.birt.chart.reportitem.ChartReportItemImpl;
import org.eclipse.birt.chart.reportitem.api.ChartReportItemConstants;
import org.eclipse.birt.chart.reportitem.ui.ChartReportItemBuilderProxy;
import org.eclipse.birt.core.ui.frameworks.taskwizard.WizardBase;
import org.eclipse.birt.report.designer.ui.extensions.ReportItemBuilderUI;
import org.eclipse.birt.report.model.api.ExtendedItemHandle;
import org.eclipse.birt.report.model.api.extension.ExtendedElementException;
import org.eclipse.birt.report.model.api.extension.IReportItem;
import org.eclipse.jface.action.Action;
import org.eclipse.jface.resource.ImageDescriptor;
import org.eclipse.swt.graphics.Image;

/**
 * Action set to open chart task.
 */

public class OpenChartTaskAction extends Action {

    private ExtendedItemHandle eih;

    private ReportItemBuilderUI uiServiceProvider;

    /**
     * 
     * @param handle
     * @param taskId
     * @param text
     * @param bBlankEnabled
     *            indicates the enabled status if chart is blank. True, always
     *            enabled; false, enabled only when not blank
     */
    public OpenChartTaskAction(ExtendedItemHandle handle, String taskId, String text, Image img,
            boolean bBlankEnabled) {
        super(text);
        this.setImageDescriptor(ImageDescriptor.createFromImage(img));
        this.eih = handle;
        this.uiServiceProvider = new ChartReportItemBuilderProxy(taskId);
        this.setEnabled(bBlankEnabled || !isBlankChart());
    }

    public void run() {
        uiServiceProvider.open(eih);
    }

    protected boolean isBlankChart() {
        IReportItem item = null;
        try {
            item = eih.getReportItem();
            if (item == null) {
                eih.loadExtendedElement();
                item = eih.getReportItem();
            }
        } catch (ExtendedElementException exception) {
            WizardBase.displayException(exception);
        }

        if (item == null) {
            return true;
        }
        ChartReportItemImpl crii = ((ChartReportItemImpl) item);
        return (Chart) crii.getProperty(ChartReportItemConstants.PROPERTY_CHART) == null;
    }
}