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/* XLogo4Schools - A Logo Interpreter specialized for use in schools, based on XLogo by Loic Le Coq
* Copyright (C) 2013 Marko Zivkovic
*
* Contact Information: marko88zivkovic at gmail dot com
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License as published by the Free
* Software Foundation; either version 2 of the License, or (at your option)
* any later version. This program is distributed in the hope that it will be
* useful, but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General
* Public License for more details. You should have received a copy of the
* GNU General Public License along with this program; if not, write to the Free
* Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
* MA 02110-1301, USA.
*
*
* This Java source code belongs to XLogo4Schools, written by Marko Zivkovic
* during his Bachelor thesis at the computer science department of ETH Zurich,
* in the year 2013 and/or during future work.
*
* It is a reengineered version of XLogo written by Loic Le Coq, published
* under the GPL License at http://xlogo.tuxfamily.org/
*
* Contents of this file were initially written by Loic Le Coq,
* modifications, extensions, refactorings might have been applied by Marko Zivkovic
*/
/**
* Title : XLogo Description : XLogo is an interpreter for the Logo programming
* language
*
* @author Loïc Le Coq
*/
package xlogo.kernel;
import java.util.Stack;
import java.util.HashMap;
import java.awt.event.*;
import javax.swing.SwingUtilities;
import xlogo.Application;
import xlogo.messages.async.history.HistoryMessenger;
import xlogo.utils.Utils;
import xlogo.MemoryChecker;
import xlogo.Logo;
// Ce thread gère l'animation de la tortue pendant l'exécution
/**
* This Thread is responsible of the turtle animation.
* This animation has to be executed in a separated thread, else it will block
* the event dispatcher thread
*/
public class Affichage extends Thread
{
public static boolean execution_lancee = false;
private boolean pause = false;
private Application cadre;
private StringBuffer instruction;
private Souris souris = new Souris();
private MemoryChecker memoryChecker = null;
public Affichage()
{
}
public Affichage(Application cadre, StringBuffer instruction)
{
this.cadre = cadre;
this.instruction = instruction;
}
class Souris extends MouseAdapter
{ // Si on déplace les Scrollbar pendant
// le dessin
public Souris()
{
} // Ceci permet d'interrompre momentanément l'exécution
public void mousePressed(MouseEvent e)
{
pause = true;
}
public void mouseReleased(MouseEvent e)
{
pause = false;
}
}
public void run()
{
// currentThread().setPriority(Thread.MIN_PRIORITY);
SwingUtilities.invokeLater(new Runnable(){
public void run()
{
cadre.setCommandLine(false);// la ligne de commandes
// n'est plus active
}
});
execution_lancee = true;
cadre.getDrawPanel().active_souris(); // On active les événements souris
// sur
// la zone de dessin
cadre.scrollArea.getVerticalScrollBar().addMouseListener(souris);
cadre.scrollArea.getHorizontalScrollBar().addMouseListener(souris);
try
{
cadre.setCar(-1);
cadre.error = false;
Interprete.operande = Interprete.operateur = Interprete.drapeau_ouvrante = false;
cadre.getKernel().getInstructionBuffer().clear();
Interprete.calcul = new Stack<String>();
Interprete.nom = new Stack<String>();
Interprete.locale = new HashMap<String, String>();
Interprete.en_cours = new Stack<String>();
memoryChecker = new MemoryChecker(cadre);
memoryChecker.start();
boolean b = true;
while (b)
{
String st = cadre.getKernel().execute(instruction);
if (!st.equals(""))
throw new LogoError(Logo.messages.getString("error.whattodo") + " " + st + " ?");
if (Interprete.actionInstruction.length() == 0)
b = false;
else
{
instruction = Interprete.actionInstruction;
Interprete.actionInstruction = new StringBuffer();
}
}
}
catch (LogoError e)
{
// if (st.equals("siwhile")) st=Logo.messages.getString("tantque");
while (!Interprete.en_cours.isEmpty() && Interprete.en_cours.peek().equals("("))
Interprete.en_cours.pop();
if (!cadre.error & !Interprete.en_cours.isEmpty())
{
HistoryMessenger.getInstance().dispatchError(
Logo.messages.getString("dans") + " " + Interprete.en_cours.pop() + ", "
+ Logo.messages.getString("line") + " " + getLineNumber() + ":\n");
}
if (!cadre.error)
HistoryMessenger.getInstance().dispatchError(Utils.SortieTexte(e.getMessage()) + "\n");
abortExecution();
}
cadre.setCommandLine(true);
if (!cadre.viewer3DVisible())
cadre.focus_Commande();
execution_lancee = false;
memoryChecker.kill();
cadre.error = false;
cadre.scrollArea.getVerticalScrollBar().removeMouseListener(souris);
cadre.scrollArea.getHorizontalScrollBar().removeMouseListener(souris);
}
private void abortExecution()
{
cadre.focus_Commande();
cadre.error = true;
Interprete.calcul = new Stack<String>();
cadre.getKernel().getInstructionBuffer().clear();
Primitive.stackLoop = new Stack<LoopProperties>();
}
private int getLineNumber()
{
String string = Interprete.lineNumber;
// System.out.println("bb"+string+"bb");
if (string.equals(""))
string = cadre.getKernel().getInstructionBuffer().toString();
// System.out.println("cc"+string+"cc");
int id = string.indexOf("\\l");
if (id != -1)
{
String lineNumber = "";
int i = id + 2;
char c = string.charAt(i);
while (c != ' ')
{
lineNumber += c;
i++;
c = string.charAt(i);
}
// System.out.println(lineNumber);
return Integer.parseInt(lineNumber);
}
return 1;
}
protected boolean isOnPause()
{
return pause;
}
/**
* @param b
* @uml.property name="pause"
*/
public void setPause(boolean b)
{
pause = b;
}
}
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