/*
    This file is part of Kiten, a KDE Japanese Reference Tool
    SPDX-FileCopyrightText: 2006 Joseph Kerian <jkerian@gmail.com>

    SPDX-License-Identifier: LGPL-2.0-or-later
*/

#include "radicalbutton.h"

#include <QMouseEvent>
#include <QStyle>
#include <QStyleOptionButton>
#include <QWidget>

RadicalButton::RadicalButton(const QString &text, QWidget *parent)
    : QPushButton(text, parent)
    , m_status(Normal)
{
    setCheckable(true);
}

RadicalButton::~RadicalButton()
{
}

bool RadicalButton::event(QEvent *event)
{
    // This button does not handle wheel events, and unlike
    // the superclass, we don't care if we're enabled or disabled
    //(the superclass eats wheel events when disabled)
    if (event->type() == QEvent::Wheel) {
        return false;
    }
    return QPushButton::event(event);
}

QSize RadicalButton::minimumSizeHint() const
{
    int width = fontMetrics().size(Qt::TextShowMnemonic, text()).width();
    int height = QPushButton::sizeHint().height();
    // TODO: RadicalButton size calculation right, one of these days
    //	QSize sz = fontMetrics().size(Qt::TextShowMnemonic, *it);
    //	setMinimumSize(sz);

    //	QStyleOptionButton opt;
    //	opt.initFrom(this);
    //	QRect rect = kapp->style()->subElementRect(QStyle::SE_PushButtonContents,&opt,this);
    return QSize(width, height);
}

void RadicalButton::mousePressEvent(QMouseEvent *e)
{
    QPushButton::mousePressEvent(e);
    if (e->button() == Qt::RightButton) {
        // setStatus( Related );
        Q_EMIT userClicked(text(), Related);
    }
}

void RadicalButton::mouseReleaseEvent(QMouseEvent *e)
{
    QPushButton::mouseReleaseEvent(e);
    if (e->button() == Qt::LeftButton) {
        switch (m_status) {
        case Selected:
            setStatus(Normal);
            Q_EMIT userClicked(text(), Normal);
            break;
        default:
            setStatus(Selected);
            Q_EMIT userClicked(text(), Selected);
        }
    }
}

void RadicalButton::resetButton()
{
    setStatus(Normal);
}

void RadicalButton::setStatus(RadicalButton::ButtonStatus newStatus)
{
    if (m_status == newStatus) {
        return;
    }

    // Because it's more work to check everything rather than just set it,
    // we'll just set everything every time
    bool checked = false, hidden = false, disabled = false;
    switch (newStatus) {
    case Normal:
        break;
    case Selected:
        checked = true;
        break;
    case NotAppropriate:
        disabled = true;
        break;
    case Related:
        break;
    case Hidden:
        hidden = true;
    }

    setVisible(!hidden);
    setEnabled(!disabled);
    setChecked(checked);
    m_status = newStatus;
}

QSize RadicalButton::sizeHint() const
{
    return minimumSizeHint();
}
