/* DijkstraAlgThread.java */

import java.awt.*;
import java.io.*;
import java.net.*;
import ciips.animation.*;
import ciips.animation.graph.*;

public class DijkstraAlgThread extends AlgThread {
	static int max_data = 10;
  static String[] dataSets = {"Graph 1", "Graph 2"};
	private static String base_data_file_name = "dij";
	static String[] options = { "" };

	AlgAnimFrame frame;
	static GraphPanel graph_panel;
	int delay = 2000;
	static int N_HISTORY_PANELS = 2;

	static { AlgAnimFrame.COMPANEL_LINES = 5; }
	static { ciips.animation.UIFrame.allowUI( false ); }

	Graph graph = null;

	public DijkstraAlgThread( AlgAnimFrame frame ) {
		super();
		setParms( frame, base_data_file_name, N_HISTORY_PANELS );
		this.frame = frame;
		int first = 0;
		System.out.println("DijkstraAlgThread: super called"); System.out.flush();
		if (frame != null &&  graph_panel != null) {
			// graph_panel already created -> this constructor called from
			// clicking the run button -> use the generated data set
	 		} 
		else {
	 		// this constructor called from AlgAnimFrame constructor
			// Ensures that graph is created
			// init( frame.algfile+first ); 
		 	}
		System.out.println("DijkstraAlgThread: cons complete"); System.out.flush();
		}

	public boolean loadData( int choice ) {
		System.out.println("DijkstraAlgThread:loadData choice " + choice );
	 	String fn = base_data_file_name+choice;
		init( fn );
		return false;
		}

	public void init( String fn ) {
		System.out.println("DijkstraAlgThread:init fn [" + fn + "]" );
	  InputStreamReader ins_r = null;
	  try {
			URL dataURL = new URL(frame.getApplet().getCodeBase(), fn);
			ins_r = new InputStreamReader(dataURL.openConnection().getInputStream());
			graph = new Graph( ins_r );
			System.out.println("DijkstraAlgThread:init graph [" + graph.toString() + "] cons");
			graph_panel.setGraph( graph );
			// graph_panel.repaint();
			frame.getCurrentPanel().addDrawingObj( graph );
			} 
		catch (Exception e) {
			System.out.println("DijkstraAlgThread:init - file [" + fn + "] I/O error");
			System.out.println(" " + e.getClass().getName() + " (" + e.getMessage() + ")");			
			} 
		}

	public void run() {
		// int choice = frame.getDataChoice();
		if ( graph_panel == null ) {
			System.out.println("DijkstraAlgThread:run -> GraphPanel");
			graph_panel = new GraphPanel( frame.getCurrentPanel() );
			}
		generateData();
		
		/* if (frame.filename.compareTo("GraphDij.java")==0) */ 
		new GraphDij( this, graph, graph_panel );
			
		/* 
		else if (frame.filename.compareTo("GraphMST.java")==0) {
			new GraphMST(this);
			}
		*/
			
	 	frame.finishAlg();
		graph_panel.repaint();
		}

	public void restoreDrawingPanelColor() {
		}
	}