#include "filterbuilder.h"

#include <QHBoxLayout>
#include <QComboBox>
#include <QPushButton>
#include <QLineEdit>

#include "cardfilter.h"

FilterBuilder::FilterBuilder(QWidget *parent)
	: QFrame(parent)
{	
	int i;

	QVBoxLayout *layout = new QVBoxLayout;
	QHBoxLayout *addFilter = new QHBoxLayout;

	filterCombo = new QComboBox;
	for (i = 0; i < CardFilter::AttrEnd; i++)
		filterCombo->addItem(
			CardFilter::attrName(static_cast<CardFilter::Attr>(i)), QVariant(i));

	typeCombo = new QComboBox;
	for (i = 0; i < CardFilter::TypeEnd; i++)
		typeCombo->addItem(
			CardFilter::typeName(static_cast<CardFilter::Type>(i)), QVariant(i));

	QPushButton *ok = new QPushButton("+");
	ok->setMaximumSize(20, 20);

	addFilter->addWidget(ok);
	addFilter->addWidget(typeCombo);
	addFilter->addWidget(filterCombo, Qt::AlignLeft);

	edit = new QLineEdit;
	edit->setSizePolicy(QSizePolicy::Expanding, QSizePolicy::Fixed);
	layout->addLayout(addFilter);
	layout->addWidget(edit);

	setFrameStyle(QFrame::Panel | QFrame::Raised);
	layout->setAlignment(Qt::AlignTop);
	setLayout(layout);

	connect(edit, SIGNAL(returnPressed()), this, SLOT(emit_add()));
	connect(ok, SIGNAL(released()), this, SLOT(emit_add()));
	connect(filterCombo, SIGNAL(currentIndexChanged(int)), edit, SLOT(clear()));
	fltr = NULL;
}

FilterBuilder::~FilterBuilder()
{
	destroyFilter();
}

void FilterBuilder::destroyFilter()
{
	if (fltr)
		delete fltr;
}

static int comboCurrentIntData(const QComboBox *combo) 
{
	return combo->itemData(combo->currentIndex()).toInt();
}

void FilterBuilder::emit_add()
{
	QString txt;

	txt = edit->text();
	if (txt.length() < 1)
		return;

	destroyFilter();
	fltr = new CardFilter(txt, 
					static_cast<CardFilter::Type>(comboCurrentIntData(typeCombo)),
					static_cast<CardFilter::Attr>(comboCurrentIntData(filterCombo)));
	emit add(fltr);
	edit->clear();
}