/*
* Alabastra Project - C++ Editor writed with QT Library V.4
* Copyright (C) Igor Maculan - geocronos@gmail.com
			Marco Buoncristiano - marco.buoncristiano@gmail.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., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
*/

#include "AlDocument.h"
#include <QDebug> 

AlDocument::AlDocument (QObject *parent) : QTextDocument(parent){
 common();    
};

AlDocument::AlDocument (AlProject *a_prj) : QTextDocument(){
	if (a_prj!=NULL)
		prj=a_prj;
	common();
};

AlDocument::AlDocument () :QTextDocument(){
	common();
};

void AlDocument::common(){
	filename=tr("Senza Nome");
	saved=false;
	setModified(false);
	syntax=new AlSyntax(this);
	clear();
	connect_signal();
};

void AlDocument::connect_signal(){
	connect (this,SIGNAL(modificationChanged(bool)),this,SLOT(documentModified(bool)));
};

QString AlDocument::getFileName(){
	return filename;
};

QString AlDocument::getShortFileName(){
	return filename.right(filename.length()-filename.lastIndexOf('/')-1);
};

bool AlDocument::isSaved(){
	return saved;
};

bool AlDocument::setFileName(QString tmp){
	if (!tmp.isEmpty())	{
		emit fileNameChanged(tmp);
		emit fileNameChanged();
		emit fileNameChanged(filename,tmp);
		filename=tmp;
		return true;
	}
	else
		return false;
};

/**
	Salvataggio file gi esistente
*/
int AlDocument::save(){
	if (saved)
		if (isModified())
		{
			if ( save(filename) )
				return 0; //OK SALVATO
			else
				return -1; //ERRORE DI SALVATAGGIO
		}
		else
			return 2; //SALVATO e NON MODIFICATO
		
	else
		return 1;//NON SALVATO
};

/**
	Salvataggio File;
*/
bool AlDocument::save(QString fname){
	QFile f(fname);
	if (!f.open(QIODevice::WriteOnly | QIODevice::Text))
		return false;
	else{
		QTextStream out(&f);
		out << toPlainText();
		f.close();
		setModified(false);
		documentModified(false);
		setFileName(fname);
		saved=true;
		emit fileNameChanged();
		qDebug()<<"Documento Salvato";
		return true;
	}
};

/**
	Apertura file
*/
void AlDocument::open(QString fname){
	setModified(false);
	setFileName(fname);
	saved=true;
	emit fileNameChanged();
	refreshMethod();
};

/*
* Emette un segnale quando il documento viene modificato
*/
void AlDocument::documentModified(bool mod){
		emit modified(this,mod);
};

/*
* Restituisce l'estensione del file
*/
QString AlDocument::getExtension(){
	int ppos=filename.lastIndexOf('.');
	if (ppos>-1)
		return filename.right(filename.size()-(ppos+1));
	else
		return "";
};

/*
* Trova i metodi nel file
*/
void AlDocument::refreshMethod(){
	qDebug()<<getExtension();
	QString mName,rName;
	alMethodList.clear();
	if (getExtension()=="cpp"){
		disconnect (this,SIGNAL(modificationChanged(bool)),this,SLOT(documentModified(bool)));
		QTextCursor cM(this);
		cM.movePosition(QTextCursor::Start);
		QRegExp extMethod=QRegExp("::([A-Z]|[0-9]|[_])*[(]([A-Z]|[0-9]|[ ]|[,]|[*]|[_]|[&])*[)]",Qt::CaseInsensitive,QRegExp::RegExp2);
		cM=find(extMethod,cM);
		QString line;
		AlMethod *method;
		//memorizzo lo stato di modifica
		bool mod=isModified();
		while ( !cM.isNull() ){
			method=new	AlMethod();			
			line=cM.selectedText();
			mName=line.mid(2,line.length()-2);
			method->setName(mName);
			
			QTextCharFormat chrMethodFormat;
			chrMethodFormat.setAnchor(true);
			chrMethodFormat.setAnchorName(mName);
			cM.setCharFormat(chrMethodFormat);
			alMethodList<<method;
			cM.movePosition(QTextCursor::NextBlock);
			cM=find(extMethod,cM);
		}
		//Ripristino lo stato di modifica
		setModified(mod);
		connect (this,SIGNAL(modificationChanged(bool)),this,SLOT(documentModified(bool)));
	}
	if (getExtension()=="h"){
		disconnect (this,SIGNAL(modificationChanged(bool)),this,SLOT(documentModified(bool)));
		QTextCursor cM(this);
		cM.movePosition(QTextCursor::Start);
		QRegExp extMethod=QRegExp("(([A-Z]|[0-9]|[_]|[*]|[>]|[<])*[ ]*([A-Z]|[0-9]|[_])*[(]([A-Z]|[0-9]|[ ]|[,]|[*]|[_])*[)][;])|(class[ ]*([A-Z]|[0-9]|[_])*)",
																						Qt::CaseInsensitive,QRegExp::RegExp2);
		cM=find(extMethod,cM);
		alMethodList.clear();
		AlMethod* method;
		//memorizzo lo stato di modifica
		bool mod=isModified();
		QString line;
		QString className;
		int spPos;
		while ( !cM.isNull() ){
			line=cM.selectedText();
			if (line.contains("class")){
				className=line.mid(5).simplified();
			}
			else{
				line=line.left(line.size()-1);
				method=new AlMethod();
				spPos=line.indexOf(" ");
				if (spPos>0){
					//non  un costruttore
					rName=line.left(spPos);
					method->setReturnName(rName);
					line=line.right(line.size()-(spPos+1));
				}
				method->setName(line);
				if (!className.isEmpty())
					method->setClassName(className);
				QTextCharFormat chrMethodFormat;
				chrMethodFormat.setAnchor(true);
				chrMethodFormat.setAnchorName(method->getName());
				cM.setCharFormat(chrMethodFormat);
				alMethodList<<method;
			}
			cM.movePosition(QTextCursor::NextBlock);
			cM=find(extMethod,cM);
		}
		//Ripristino lo stato di modifica
		setModified(mod);
		connect (this,SIGNAL(modificationChanged(bool)),this,SLOT(documentModified(bool)));
	}
};

QList<AlMethod*> AlDocument::getAlMethodList(){
	return alMethodList;
};

void AlDocument::setModified(bool m=true){
	QTextDocument::setModified(m);
	emit modificationChanged(m);
};