/*

    Copyright (C) 2001 The Kompany
		  2002-2003	Ilya Konstantinov <kde-devel@future.shiny.co.il>
		  2002-2003	Marcus Meissner <marcus@jet.franken.de>
		  2003		Nadeem Hasan <nhasan@nadmm.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., 675 Mass Ave, Cambridge, MA 02139, USA.

*/
#include <qlayout.h>
#include <qgrid.h>
#include <qlabel.h>
#include <qvgroupbox.h>
#include <qcheckbox.h>
#include <qradiobutton.h>
#include <qlineedit.h>
#include <qcombobox.h>
#include <qslider.h>
#include <qvbuttongroup.h>
#include <qhbuttongroup.h>
#include <qvbox.h>
#include <qtabwidget.h>
#include <qwhatsthis.h>

#include <klocale.h>

#include "kameraconfigdialog.h"
#include "kameraconfigdialog.moc"

KameraConfigDialog::KameraConfigDialog(Camera */*camera*/,
					CameraWidget *widget,
					QWidget *parent,
					const char *name) :
KDialogBase(parent, name, true, QString::null, Ok|Cancel, Ok ),
m_widgetRoot(widget)
{
    QFrame *main = makeMainWidget();
	QVBoxLayout *topLayout = new QVBoxLayout(main, 0, spacingHint());
	topLayout->setAutoAdd(true);

	m_tabWidget = 0;

	appendWidget(main, widget);
}

void KameraConfigDialog::appendWidget(QWidget *parent, CameraWidget *widget)
{
	QWidget *newParent = parent;
	
	CameraWidgetType widget_type;
	const char *widget_name;
	const char *widget_info;
	const char *widget_label;
	float widget_value_float;
	int widget_value_int;
	const char *widget_value_string;
	gp_widget_get_type(widget, &widget_type);
	gp_widget_get_label(widget, &widget_label);
	gp_widget_get_info(widget, &widget_info);
	gp_widget_get_name(widget, &widget_name);
	
	QString whats_this = QString::fromLocal8Bit(widget_info);	// gphoto2 doesn't seem to have any standard for i18n

	// Add this widget to parent
	switch(widget_type) {
	case GP_WIDGET_WINDOW:
		{
			setCaption(widget_label);
			
			break;
		}
	case GP_WIDGET_SECTION:
		{
			if (!m_tabWidget)
				m_tabWidget = new QTabWidget(parent);
			QWidget *tab = new QWidget(m_tabWidget);
			// widgets are to be aligned vertically in the tab
			QVBoxLayout *tabLayout = new QVBoxLayout(tab, marginHint(),
				spacingHint());
			m_tabWidget->insertTab(tab, widget_label);
			QVBox *tabContainer = new QVBox(tab);
			tabContainer->setSpacing(spacingHint());
			tabLayout->addWidget(tabContainer);
			newParent = tabContainer;

			tabLayout->addStretch();
		
			break;
		}
	case GP_WIDGET_TEXT:
		{
			gp_widget_get_value(widget, &widget_value_string);

			QGrid *grid = new QGrid(2, Horizontal, parent);
			grid->setSpacing(spacingHint());
			new QLabel(QString::fromLocal8Bit( widget_label )+":", grid);
			QLineEdit *lineEdit = new QLineEdit(widget_value_string, grid);
			m_wmap.insert(widget, lineEdit);

			if (!whats_this.isEmpty())
				QWhatsThis::add(grid, whats_this);

			break;
		}
	case GP_WIDGET_RANGE:
		{
			float widget_low;
			float widget_high;
			float widget_increment;
			gp_widget_get_range(widget, &widget_low, &widget_high, &widget_increment);
			gp_widget_get_value(widget, &widget_value_float);
	
			QGroupBox *groupBox = new QVGroupBox(widget_label, parent);
			QSlider *slider = new QSlider(
				( int )widget_low,
				( int )widget_high,
				( int )widget_increment,
				( int )widget_value_float,
				QSlider::Horizontal,
				groupBox );
			m_wmap.insert(widget, slider);
		
			if (!whats_this.isEmpty())
				QWhatsThis::add(groupBox, whats_this);
		
			break;
		}
	case GP_WIDGET_TOGGLE:
		{
			gp_widget_get_value(widget, &widget_value_int);
		
			QCheckBox *checkBox = new QCheckBox(widget_label, parent);
			checkBox->setChecked(widget_value_int);
			m_wmap.insert(widget, checkBox);

			if (!whats_this.isEmpty())
				QWhatsThis::add(checkBox, whats_this);

			break;
		}
	case GP_WIDGET_RADIO:
		{
			gp_widget_get_value(widget, &widget_value_string);
	
			int count = gp_widget_count_choices(widget);

			// for less than 5 options, align them horizontally
			QButtonGroup *buttonGroup;
			if (count > 4)
				buttonGroup = new QVButtonGroup(widget_label, parent);
			else
				buttonGroup = new QHButtonGroup(widget_label, parent);
			
			for(int i = 0; i < count; ++i) {
				const char *widget_choice;
				gp_widget_get_choice(widget, i, &widget_choice);

				new QRadioButton(widget_choice, buttonGroup);
				if(!strcmp(widget_value_string, widget_choice))
					buttonGroup->setButton(i);
			}
			m_wmap.insert(widget, buttonGroup);

			if (!whats_this.isEmpty())
				QWhatsThis::add(buttonGroup, whats_this);

			break;
		}
	case GP_WIDGET_MENU:
		{
			gp_widget_get_value(widget, &widget_value_string);
	
			QComboBox *comboBox = new QComboBox(FALSE, parent);
			comboBox->clear();
			for(int i = 0; i < gp_widget_count_choices(widget); ++i) {
				const char *widget_choice;
				gp_widget_get_choice(widget, i, &widget_choice);

				comboBox->insertItem(widget_choice);
				if(!strcmp(widget_value_string, widget_choice))
					comboBox->setCurrentItem(i);
			}
			m_wmap.insert(widget, comboBox);

			if (!whats_this.isEmpty())
				QWhatsThis::add(comboBox, whats_this);

			break;
		}
	case GP_WIDGET_BUTTON:
		{
			// TODO
			// I can't see a way of implementing this. Since there is
			// no way of telling which button sent you a signal, we
			// can't map to the appropriate widget->callback
			new QLabel(i18n("Button (not supported by KControl)"), parent);
	
			break;
		}
	case GP_WIDGET_DATE:
		{
			// TODO
			new QLabel(i18n("Date (not supported by KControl)"), parent);

			break;
		}
	default:
		return;
	}

	// Append all this widgets children
	for(int i = 0; i < gp_widget_count_children(widget); ++i) {
		CameraWidget *widget_child;
		gp_widget_get_child(widget, i, &widget_child);
		appendWidget(newParent, widget_child);
	}
	
	// Things that must be done after all children were added
/*
	switch (widget_type) {
	case GP_WIDGET_SECTION:
		{
			tabLayout->addItem( new QSpacerItem(0, 0, QSizePolicy::MinimumExpanding, QSizePolicy::MinimumExpanding) );
			break;
		}
	}
*/
}

void KameraConfigDialog::updateWidgetValue(CameraWidget *widget)
{
	CameraWidgetType widget_type;
	gp_widget_get_type(widget, &widget_type);

	switch(widget_type) {
	case GP_WIDGET_WINDOW:
		// nothing to do
		break;
	case GP_WIDGET_SECTION:
		// nothing to do
		break;
	case GP_WIDGET_TEXT:
		{
			QLineEdit *lineEdit = static_cast<QLineEdit *>(m_wmap[widget]);
			gp_widget_set_value(widget, (void *)lineEdit->text().local8Bit().data());
	
			break;
		}
	case GP_WIDGET_RANGE:
		{
			QSlider *slider = static_cast<QSlider *>(m_wmap[widget]);
			float value_float = slider->value();
			gp_widget_set_value(widget, (void *)&value_float);
			
			break;
		}
	case GP_WIDGET_TOGGLE:
		{
			QCheckBox *checkBox = static_cast<QCheckBox *>(m_wmap[widget]);
			int value_int = checkBox->isChecked() ? 1 : 0;
			gp_widget_set_value(widget, (void *)&value_int);
			
			break;
		}
	case GP_WIDGET_RADIO:
		{
			QButtonGroup *buttonGroup = static_cast<QVButtonGroup *>(m_wmap[widget]);
			gp_widget_set_value(widget, (void *)buttonGroup->selected()->text().local8Bit().data());

			break;
		}
	case GP_WIDGET_MENU:
		{
			QComboBox *comboBox = static_cast<QComboBox *>(m_wmap[widget]);
			gp_widget_set_value(widget, (void *)comboBox->currentText().local8Bit().data());
	
			break;
		}
	case GP_WIDGET_BUTTON:
		// nothing to do
		break;
	case GP_WIDGET_DATE:
		{
			// not implemented
			break;
		}
	}
	
	// Copy child widget values
	for(int i = 0; i < gp_widget_count_children(widget); ++i) {
		CameraWidget *widget_child;
		gp_widget_get_child(widget, i, &widget_child);
		updateWidgetValue(widget_child);
	}
}

void KameraConfigDialog::slotOK()
{
	// Copy Qt widget values into CameraWidget hierarchy
	updateWidgetValue(m_widgetRoot);

	// 'ok' dialog
	accept();
}
