/*
 Copyright © 2017 Hasan Yavuz Özderya

 This file is part of serialplot.

 serialplot 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 3 of the License, or
 (at your option) any later version.

 serialplot 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 serialplot. If not, see <http://www.gnu.org/licenses/>.
*/

#include "hidabletabwidget.h"
#include <QTabBar>
#include <QToolButton>
#include <QSizePolicy>
#include <QTimer>

#define DOUBLE_CLICK_DELAY (200) // ms

HidableTabWidget::HidableTabWidget(QWidget *parent) :
 QTabWidget(parent),
 hideAction("▾", this)
{
 hideAction.setCheckable(true);
 hideAction.setToolTip("Hide Panels");
 QToolButton* hideButton = new QToolButton();
 hideButton->setDefaultAction(&hideAction);
 hideButton->setAutoRaise(true);
 this->setCornerWidget(hideButton);

 connect(&hideAction, SIGNAL(toggled(bool)), this, SLOT(onHideAction(bool)));
 connectSignals();
}

void HidableTabWidget::onHideAction(bool checked)
{
 if (checked) // hide
 {
 this->setMaximumHeight(this->tabBar()->height());
 disconnect(this, SIGNAL(tabBarDoubleClicked(int)), this, SLOT(onTabBarDoubleClicked()));
 QTimer::singleShot(DOUBLE_CLICK_DELAY, this, SLOT(connectSignals()));
 }
 else // show
 {
 this->setMaximumHeight(100000); // just a very big number
 disconnect(this, SIGNAL(tabBarClicked(int)), this, SLOT(onTabBarClicked()));
 QTimer::singleShot(DOUBLE_CLICK_DELAY, this, SLOT(connectSignals()));
 }
}

void HidableTabWidget::onTabBarClicked()
{
 hideAction.setChecked(false);
}

void HidableTabWidget::onTabBarDoubleClicked()
{
 hideAction.setChecked(true);
}

void HidableTabWidget::connectSignals()
{
 if (hideAction.isChecked()) // hidden
 {
 connect(this, SIGNAL(tabBarClicked(int)), this, SLOT(onTabBarClicked()));
 }
 else // shown
 {
 connect(this, SIGNAL(tabBarDoubleClicked(int)), this, SLOT(onTabBarDoubleClicked()));
 }
}

void HidableTabWidget::showTabs()
{
 hideAction.setChecked(false);
}