/* Copyright (C) 2007 J.F.Dockes
* 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.
*/
#ifndef _confgui_h_included_
#define _confgui_h_included_
/**
* This file defines a number of simple classes (virtual base: ConfParamW)
* which let the user input configuration parameters.
*
* Subclasses are defined for entering different kind of data, ie a string,
* a file name, an integer, etc.
*
* Each configuration gui object is linked to the configuration data through
* a "link" object which knows the details of interacting with the actual
* configuration data, like the parameter name, the actual config object,
* the method to call etc.
*
* The link object is set when the input widget is created and cannot be
* changed.
*
* The widgets are typically linked to a temporary configuration object, which
* is then copied to the actual configuration if the data is accepted, or
* destroyed and recreated as a copy if Cancel is pressed (you have to
* delete/recreate the widgets in this case as the links are no longer valid).
*/
#include <string>
#include <limits.h>
#include <qglobal.h>
#include <qstring.h>
#include <qwidget.h>
#include "refcntr.h"
using std::string;
class QHBoxLayout;
class QLineEdit;
class QListWidget;
class QSpinBox;
class QComboBox;
class QCheckBox;
class QPushButton;
namespace confgui {
// A class to isolate the gui widget from the config storage mechanism
class ConfLinkRep {
public:
virtual ~ConfLinkRep() {}
virtual bool set(const string& val) = 0;
virtual bool get(string& val) = 0;
};
typedef RefCntr<ConfLinkRep> ConfLink;
// Useful to store/manage data which has no direct representation in
// the config, ie list of subkey directories
class ConfLinkNullRep : public ConfLinkRep {
public:
virtual ~ConfLinkNullRep() {}
virtual bool set(const string&)
{
return true;
}
virtual bool get(string& val) {val = ""; return true;}
};
// A widget to let the user change one configuration
// parameter. Subclassed for specific parameter types. Basically
// has a label and some kind of entry widget
class ConfParamW : public QWidget {
Q_OBJECT
public:
ConfParamW(QWidget *parent, ConfLink cflink)
: QWidget(parent), m_cflink(cflink), m_fsencoding(false)
{
}
virtual void loadValue() = 0;
virtual void setFsEncoding(bool onoff) {m_fsencoding = onoff;}
protected:
ConfLink m_cflink;
QHBoxLayout *m_hl;
// File names are encoded as local8bit in the config files. Other
// are encoded as utf-8
bool m_fsencoding;
virtual bool createCommon(const QString& lbltxt,
const QString& tltptxt);
public slots:
virtual void setEnabled(bool) = 0;
protected slots:
void setValue(const QString& newvalue);
void setValue(int newvalue);
void setValue(bool newvalue);
};
// Widgets for setting the different types of configuration parameters:
// Int
class ConfParamIntW : public ConfParamW {
Q_OBJECT
public:
// The default value is only used if none exists in the sample
// configuration file. Defaults are normally set in there.
ConfParamIntW(QWidget *parent, ConfLink cflink,
const QString& lbltxt,
const QString& tltptxt,
int minvalue = INT_MIN,
int maxvalue = INT_MAX,
int defaultvalue = 0);
virtual void loadValue();
public slots:
virtual void setEnabled(bool i) {if(m_sb) ((QWidget*)m_sb)->setEnabled(i);}
protected:
QSpinBox *m_sb;
int m_defaultvalue;
};
// Arbitrary string
class ConfParamStrW : public ConfParamW {
Q_OBJECT
public:
ConfParamStrW(QWidget *parent, ConfLink cflink,
const QString& lbltxt,
const QString& tltptxt);
virtual void loadValue();
public slots:
virtual void setEnabled(bool i) {if(m_le) ((QWidget*)m_le)->setEnabled(i);}
protected:
QLineEdit *m_le;
};
// Constrained string: choose from list
class ConfParamCStrW : public ConfParamW {
Q_OBJECT
public:
ConfParamCStrW(QWidget *parent, ConfLink cflink,
const QString& lbltxt,
const QString& tltptxt, const QStringList& sl);
virtual void loadValue();
public slots:
virtual void setEnabled(bool i) {if(m_cmb) ((QWidget*)m_cmb)->setEnabled(i);}
protected:
QComboBox *m_cmb;
};
// Boolean
class ConfParamBoolW : public ConfParamW {
Q_OBJECT
public:
ConfParamBoolW(QWidget *parent, ConfLink cflink,
const QString& lbltxt,
const QString& tltptxt);
virtual void loadValue();
public slots:
virtual void setEnabled(bool i) {if(m_cb) ((QWidget*)m_cb)->setEnabled(i);}
public:
QCheckBox *m_cb;
};
// File name
class ConfParamFNW : public ConfParamW {
Q_OBJECT
public:
ConfParamFNW(QWidget *parent, ConfLink cflink,
const QString& lbltxt,
const QString& tltptxt, bool isdir = false);
virtual void loadValue();
protected slots:
void showBrowserDialog();
public slots:
virtual void setEnabled(bool i)
{
if(m_le) ((QWidget*)m_le)->setEnabled(i);
if(m_pb) ((QWidget*)m_pb)->setEnabled(i);
}
protected:
QLineEdit *m_le;
QPushButton *m_pb;
bool m_isdir;
};
// String list
class ConfParamSLW : public ConfParamW {
Q_OBJECT
public:
ConfParamSLW(QWidget *parent, ConfLink cflink,
const QString& lbltxt,
const QString& tltptxt);
virtual void loadValue();
QListWidget *getListBox() {return m_lb;}
public slots:
virtual void setEnabled(bool i) {if(m_lb) ((QWidget*)m_lb)->setEnabled(i);}
protected slots:
virtual void showInputDialog();
void deleteSelected();
signals:
void entryDeleted(QString);
protected:
QListWidget *m_lb;
void listToConf();
};
// Dir name list
class ConfParamDNLW : public ConfParamSLW {
Q_OBJECT
public:
ConfParamDNLW(QWidget *parent, ConfLink cflink,
const QString& lbltxt,
const QString& tltptxt)
: ConfParamSLW(parent, cflink, lbltxt, tltptxt)
{
m_fsencoding = true;
}
protected slots:
virtual void showInputDialog();
};
// Constrained string list (chose from predefined)
class ConfParamCSLW : public ConfParamSLW {
Q_OBJECT
public:
ConfParamCSLW(QWidget *parent, ConfLink cflink,
const QString& lbltxt,
const QString& tltptxt,
const QStringList& sl)
: ConfParamSLW(parent, cflink, lbltxt, tltptxt), m_sl(sl)
{
}
protected slots:
virtual void showInputDialog();
protected:
const QStringList m_sl;
};
extern void setSzPol(QWidget *w, QSizePolicy::Policy hpol,
QSizePolicy::Policy vpol,
int hstretch, int vstretch);
}
#endif /* _confgui_h_included_ */