/*
 * Olive Community Edition - Non-Linear Video Editor
 * Copyright (C) 2025 Olive CE Team
 *
 * 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 3 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, see <http://www.gnu.org/licenses/>.
 */

#include "nodeparamviewitembase.h"

#include <QEvent>
#include <QPainter>

namespace olive
{

#define super QDockWidget

NodeParamViewItemBase::NodeParamViewItemBase(QWidget *parent)
	: super(parent)
	, highlighted_(false)
{
	// Create title bar widget
	title_bar_ = new NodeParamViewItemTitleBar(this);

	// Add title bar to widget
	this->setTitleBarWidget(title_bar_);

	// Connect title bar to this
	connect(title_bar_, &NodeParamViewItemTitleBar::ExpandedStateChanged, this,
			&NodeParamViewItemBase::SetExpanded);
	connect(title_bar_, &NodeParamViewItemTitleBar::PinToggled, this,
			&NodeParamViewItemBase::PinToggled);
	connect(title_bar_, &NodeParamViewItemTitleBar::Clicked, this,
			&NodeParamViewItemBase::Clicked);

	// Use dummy QWidget to retain width when not expanded (QDockWidget seems to ignore the titlebar
	// size hints and will shrink as small as possible if the body is hidden)
	hidden_body_ = new QWidget(this);

	// Default to hidden body, this also seems to fix an issue with clicks being intermittent
	// on the titlebar
	setWidget(hidden_body_);

	setAutoFillBackground(true);

	setFocusPolicy(Qt::ClickFocus);
}

bool NodeParamViewItemBase::IsExpanded() const
{
	return title_bar_->IsExpanded();
}

QString NodeParamViewItemBase::GetTitleBarTextFromNode(Node *n)
{
	if (n->GetLabel().isEmpty()) {
		return n->Name();
	} else {
		return tr("%1 (%2)").arg(n->GetLabel(), n->Name());
	}
}

void NodeParamViewItemBase::SetBody(QWidget *body)
{
	body_ = body;
	body_->setParent(this);

	if (title_bar_->IsExpanded()) {
		setWidget(body_);
	}
}

void NodeParamViewItemBase::paintEvent(QPaintEvent *event)
{
	super::paintEvent(event);

	// Draw border if focused
	if (highlighted_) {
		QPainter p(this);
		p.setBrush(Qt::NoBrush);
		p.setPen(palette().highlight().color());
		p.drawRect(rect().adjusted(0, 0, -1, -1));
	}
}

void NodeParamViewItemBase::SetExpanded(bool e)
{
	setWidget(e ? body_ : hidden_body_);
	title_bar_->SetExpanded(e);

	emit ExpandedChanged(e);
}

void NodeParamViewItemBase::changeEvent(QEvent *e)
{
	if (e->type() == QEvent::LanguageChange) {
		Retranslate();
	}

	super::changeEvent(e);
}

void NodeParamViewItemBase::moveEvent(QMoveEvent *event)
{
	super::moveEvent(event);

	emit Moved();
}

void NodeParamViewItemBase::mousePressEvent(QMouseEvent *e)
{
	super::mousePressEvent(e);

	emit Clicked();
}

}