package com.vci.client.workflow.task;

import java.awt.BorderLayout;
import java.awt.Color;
import java.awt.FlowLayout;
import java.awt.image.BufferedImage;
import java.io.ByteArrayInputStream;
import java.io.IOException;
import java.io.InputStream;

import javax.imageio.ImageIO;
import javax.swing.ImageIcon;
import javax.swing.JLabel;
import javax.swing.JPanel;
import javax.swing.JScrollPane;

import com.vci.client.workflow.delegate.ProcessCustomClientDelegate;
import com.vci.corba.common.VCIError;

public class ViewExecutionImagePanel extends JPanel {

	private String taskName;
	private String executionId;

	public ViewExecutionImagePanel(String processDefinitionId) {
		this(processDefinitionId, null);
	}

	public ViewExecutionImagePanel(String executionId, String taskName) {
		this.executionId = executionId;
		this.taskName = taskName;

		initUI();
		initData();
	}

	private void initData() {
		ProcessCustomClientDelegate processCustomClientDelegate = new ProcessCustomClientDelegate();
		try {
			byte[] processChart = processCustomClientDelegate.getExecutionImageByExecutionId(executionId, taskName);

			InputStream buffin = new ByteArrayInputStream(processChart, 0, processChart.length);
			BufferedImage bi = ImageIO.read(buffin);
			ImageIcon icon = new ImageIcon(bi);
			flowChartLabel.setIcon(icon);
		} catch (IOException e) {
			e.printStackTrace();
		} catch (VCIError e) {
			e.printStackTrace();
		}
	}

	private void initUI() {
		setBackground(Color.WHITE);
		setLayout(new BorderLayout(0, 0));
		JScrollPane scrollPane = new JScrollPane();
		scrollPane.setBackground(Color.WHITE);
		add(scrollPane);

		JPanel panel = new JPanel();
		panel.setBackground(Color.WHITE);
		scrollPane.setViewportView(panel);
		panel.setLayout(new FlowLayout(FlowLayout.LEFT, 5, 5));

		flowChartLabel = new JLabel();
		panel.add(flowChartLabel);
		flowChartLabel.setBackground(Color.WHITE);
	}

	/**
	 * 
	 */
	private static final long serialVersionUID = 1L;
	private JLabel flowChartLabel;

}