/*
For general Scribus (>=1.3.2) copyright and licensing information please refer
to the COPYING file provided with the program. Following this notice may exist
a copyright and/or license notice that predates the release of Scribus 1.3.2
for which a new license (GPL+exception) is in place.
*/
/***************************************************************************
						latexeditor.h  -  description
						-------------------
copyright            : Scribus Team
***************************************************************************/

/***************************************************************************
*                                                                         *
*   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.                                   *
*                                                                         *
***************************************************************************/

#ifndef LATEXEDITOR_H
#define LATEXEDITOR_H

#include "ui_latexeditor.h"
#include "scribusapi.h"
#include <QWidget>
#include <QProcess>
#include <QMap>
#include <QPushButton>
#include <QStringList>

class PageItem_LatexFrame;
class LatexHighlighter;
class I18nXmlStreamReader;
class QComboBox;
class QListWidgetItem;
class QFile;
class XmlWidget;
class FileWatcher;

class SCRIBUS_API LatexEditor : public QDialog, Ui::LatexEditor
{
		Q_OBJECT
	public:
		LatexEditor ( PageItem_LatexFrame * );
		~LatexEditor();
		virtual void changeEvent ( QEvent *e );
		void startEditor();
		void exitEditor();
		void revert();
		void apply ( bool force=false );
		void initialize();
		static QIcon icon ( QString config, QString fn );
		static QString iconFile ( QString config );
	protected:
		PageItem_LatexFrame *frame;
		LatexHighlighter *highlighter;
		void loadSettings();
		void createNewSettingsTab ( I18nXmlStreamReader *xml );
		void createNewItemsTab ( I18nXmlStreamReader *xml );
		QMap<QString, XmlWidget *> widgetMap;
		QString currentConfigFile, currentIconFile;
		/*External Editor*/
		QString extEditorFile;
		void loadExternalEditorFile();
		void writeExternalEditorFile();
		QProcess *extEditor;
		FileWatcher *fileWatcher;
	protected slots:
		void extEditorFinished ( int exitCode, QProcess::ExitStatus exitStatus );
		void extEditorFileChanged ( QString filename );
		void extEditorError ( QProcess::ProcessError error );
	public slots:
		void okClicked();
		void cancelClicked();
		void updateClicked ( bool );
		void revertClicked ( bool );
		void formulaChanged ( QString, QString );
		void applicationChanged();
		void latexFinished();
		void stateChanged ( QProcess::ProcessState );
		//Slots for the dynamic interface
		void tagButtonClicked ( QString );
		void insertButtonClicked ( QObject * );
		void newItemSelected ( QListWidgetItem *, QListWidgetItem * );
		void itemDoubleClicked ( QListWidgetItem * );
		void updateConfigFile();
		void extEditorClicked();
};


class SCRIBUS_API DataPushButton : public QPushButton
{
		Q_OBJECT
	public:
		DataPushButton ( QString caption, QObject *data, bool deleteOnDestroy=false ) :
				QPushButton ( caption ), data ( data ), del ( deleteOnDestroy )
		{
			connect ( this, SIGNAL ( clicked ( bool ) ), this, SLOT ( buttonClicked ( bool ) ) );
		}
		~DataPushButton()
		{
			if ( del ) delete data;
		}
	protected:
		QObject *data;
		bool del;
	private slots:
		void buttonClicked ( bool checked )
		{
			emit clickedWithData ( data );
		}
	signals:
		void clickedWithData ( QObject *data );
};

class SCRIBUS_API StringPushButton : public QPushButton
{
		Q_OBJECT
	public:
		StringPushButton ( QString caption, QString data ) :
				QPushButton ( caption ), data ( data )
		{
			connect ( this, SIGNAL ( clicked ( bool ) ), this, SLOT ( buttonClicked ( bool ) ) );
		}
	protected:
		QString data;
	private slots:
		void buttonClicked ( bool checked )
		{
			emit clickedWithData ( data );
		}
	signals:
		void clickedWithData ( QString data );
};

class SCRIBUS_API XmlWidget
{
	public:
		static XmlWidget *fromXml ( I18nXmlStreamReader *xml );
		XmlWidget ( I18nXmlStreamReader *xml, bool readDescription=true );
		virtual ~XmlWidget() {};
		QString name() const { return m_name; }
		QString description() const { return m_description; }
		QString defaultValue() const { return m_defaultValue; }
		virtual QString toString() const { return ""; }
		virtual void fromString ( QString str ) {};
	protected:
		QString m_name;
		QString m_description;
		QString m_defaultValue;
};

class SCRIBUS_API IconBuffer
{
	public:
		IconBuffer() { len = 0; basePos = 0; file = 0; }
		static IconBuffer *instance();
		void loadFile ( QString filename );
		QIcon *icon ( QString filename, QString name );
	protected:
		QFile *file;
		QMap<QString, QIcon> icons;
		QStringList loadedFiles;
		QString readHeader();
		QIcon readData();
		int len, basePos;
		static IconBuffer *_instance;
};

#endif