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/* XLogo4Schools - A Logo Interpreter specialized for use in schools, based on XLogo by Lo�c 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 Z�rich,
* in the year 2013 and/or during future work.
*
* It is a reengineered version of XLogo written by Lo�c Le Coq, published
* under the GPL License at http://xlogo.tuxfamily.org/
*
* Contents of this file were initially written by Lo�c Le Coq,
* modifications, extensions, refactorings might have been applied by Marko Zivkovic
*/
package xlogo.gui;
import javax.swing.event.*;
import javax.swing.JTextPane;
import javax.swing.text.BadLocationException;
import javax.swing.SwingUtilities;
import xlogo.StyledDocument.DocumentLogo;
import xlogo.storage.WSManager;
/**
* Title : XLogo
* Description : XLogo is an interpreter for the Logo
* programming language
* @author Loïc Le Coq
*/
class ZoneEdition extends JTextPane implements CaretListener{
private static final long serialVersionUID = 1L;
private DocumentLogo dsd=null;
// Si la correspondance entre parenthese ou crochets est activée
private boolean active=false;
// Dernière position allumée
private int[] position=new int[2];
// public DocumentLogo getDsd(){
// return dsd;
// }
public void setActive(boolean b){
active=b;
}
ZoneEdition(EditorTextPane etp){
dsd=etp.getDsd();
addCaretListener(this);
}
// Teste si le caractère précédent est un backslash
private boolean TesteBackslash(String content,int pos){
String caractere="";
if (pos>0) caractere=content.substring(pos-1,pos);
//System.out.println(caractere);
if (caractere.equals("\\")) return true;
return false;
}
class verif_parenthese implements Runnable{
int pos;
verif_parenthese(int pos){
this.pos=pos;
}
public void run(){
if (active){
active=false;
int debut=position[0];
int fin=position[0];
if (debut!=-1){
if (debut>0) debut--;
if (fin<dsd.getLength()) fin++;
try{
String content=dsd.getText(0,dsd.getLength());
dsd.colore(content,debut,fin);
}
catch(BadLocationException e){}
}
debut=position[1];
fin=position[1];
if (debut!=-1){
if (debut>0) debut--;
if (fin<dsd.getLength()) debut++;
if (fin<dsd.getLength()) fin++;
try{
String content=dsd.getText(0,dsd.getLength());
dsd.colore(content,debut,fin);
}
catch(BadLocationException e){}
}
}
int length=dsd.getLength();
try{
String content=dsd.getText(pos,length-pos);
int id=-1;
if (length>pos) {
id="[]()".indexOf(content.substring(0,1));
}
if (id>-1&&!TesteBackslash(dsd.getText(0,pos),pos)){
active=true;
switch(id){
case 0:
chercheApres(content,pos,"[","]");
break;
case 1:
content=getText(0,pos);
chercheAvant(content,pos,"[","]");
break;
case 2:
chercheApres(content,pos,"(",")");
break;
case 3:
content=getText(0,pos);
chercheAvant(content,pos,"(",")");
break;
}
}
}
catch(BadLocationException e1){}
}
}
public void caretUpdate(CaretEvent e){
int pos=e.getDot();
if (WSManager.getWorkspaceConfig().isSyntaxHighlightingEnabled()) SwingUtilities.invokeLater(new verif_parenthese(pos));
}
void chercheApres(String content,int pos,String ouv,String fer){
boolean continuer=true;
int of_ouvrant;
int of_fermant=0;
int from_index_ouvrant=1;
int from_index_fermant=1;
while(continuer){
of_ouvrant=content.indexOf(ouv,from_index_ouvrant);
while (of_ouvrant!=-1&&TesteBackslash(content,of_ouvrant)) of_ouvrant=content.indexOf(ouv,of_ouvrant+1);
of_fermant=content.indexOf(fer,from_index_fermant);
while (of_fermant!=-1&&TesteBackslash(content,of_fermant)) of_fermant=content.indexOf(fer,of_fermant+1);
if (of_fermant==-1) break;
if (of_ouvrant!=-1 && of_ouvrant<of_fermant) {
from_index_ouvrant=of_ouvrant+1;
from_index_fermant=of_fermant+1;
}
else continuer=false;;
}
if (of_fermant!=-1) {
dsd.Montre_Parenthese(of_fermant+pos);
position[1]=of_fermant+pos;
}
else position[1]=-1;
dsd.Montre_Parenthese(pos);
position[0]=pos;
}
void chercheAvant(String content,int pos,String ouv,String fer){
boolean continuer=true;
int of_fermant=0;
int of_ouvrant=0;
int from_index_ouvrant=pos;
int from_index_fermant=pos;
while(continuer){
of_ouvrant=content.lastIndexOf(ouv,from_index_ouvrant);
while (of_ouvrant!=-1&&TesteBackslash(content,of_ouvrant)) of_ouvrant=content.lastIndexOf(ouv,of_ouvrant-1);
of_fermant=content.lastIndexOf(fer,from_index_fermant);
while (of_fermant!=-1&&TesteBackslash(content,of_fermant)) of_fermant=content.lastIndexOf(fer,of_fermant-1);
if (of_ouvrant==-1) break;
if (of_ouvrant<of_fermant) {
from_index_ouvrant=of_ouvrant-1;
from_index_fermant=of_fermant-1;
}
else continuer=false;;
}
if (of_ouvrant!=-1) {
dsd.Montre_Parenthese(of_ouvrant);
position[0]=of_ouvrant;
}
else position[0]=-1;
dsd.Montre_Parenthese(pos);
position[1]=pos;
}
}
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