#include "cdgraphics.h"
#include "cdutils_core.h"
#include "cdutils_x.h"
#include "qcd_core.h"
#include "qcd_model.h"
#include "graphic.h"
#include "piqt.h"
#include <QMimeData>
#include <QDragEnterEvent>
#include <QDragMoveEvent>
#include <QDropEvent>
#include <QMainWindow>
#include <QDockWidget>
#include <QInputDialog>

using namespace CDUtils;


GDockWidget::GDockWidget(QString title, QMainWindow * p): QDockWidget(title, p) {
	da = p;
	menu = new QMenu(this);
	QAction * a = new QAction(QIcon(":/icons/document-edit.png"), "Rename ...", this);
	connect(a, SIGNAL(triggered(bool)), this, SLOT(rename()));
	dactions << a;
	a = new QAction(QIcon(":/icons/edit-delete.png"), "Remove", this);
	connect(a, SIGNAL(triggered(bool)), this, SIGNAL(removeRequest()));
	dactions << a;
}


void GDockWidget::contextMenuEvent(QContextMenuEvent * e) {
	QMenu * mwm = da->createPopupMenu();
	menu->clear();
	menu->addActions(dactions);
	menu->addSeparator();
	menu->addActions(mwm->actions());
	menu->popup(e->globalPos());
	mwm->deleteLater();
}


void GDockWidget::rename() {
	QString nn = QInputDialog::getText(this, trUtf8("Rename area"), trUtf8("New area name:"),
									   QLineEdit::Normal, windowTitle());
	if (nn.isEmpty()) return;
	setWindowTitle(nn);
}




CDGraphics::CDGraphics(QWidget * parent) : QWidget(parent), Ui::CDGraphics() {
	setupUi(this);
	da = new QMainWindow();
	da->setWindowFlags(frame->windowFlags());
	da->setDockNestingEnabled(true);
	layoutMain->addWidget(da);
}


CDGraphics::~CDGraphics() {
}


void CDGraphics::reset() {
}


bool CDGraphics::eventFilter(QObject * o, QEvent * e) {
	//if (o == graphic->viewport()) {
		switch (e->type()) {
		case QEvent::DragEnter: {
			QDragEnterEvent * de = (QDragEnterEvent*)e;
			const QMimeData * mime = de->mimeData();
			//qDebug() << "enter" << mime;
			if (!mime) break;
			if (mime->text().isEmpty()) break;
			de->setDropAction(Qt::CopyAction);
			de->accept();
			return true;
			} break;
		case QEvent::Drop: {
			QDropEvent * de = (QDropEvent*)e;
			const QMimeData * mime = de->mimeData();
			if (!mime) break;
			//qDebug() << "drop" << mime->text();
			if (mime->text().isEmpty()) break;
			addXToGraphic(mime->text(), viewportGraphic(o));
			de->accept();
			return true;
		} break;
		default: break;
		}
	//}
	return QWidget::eventFilter(o, e);
}


Graphic * CDGraphics::viewportGraphic(QObject * o) const {
	if (!o) return 0;
	while (!qobject_cast<Graphic*>(o) && o)
		o = o->parent();
	return qobject_cast<Graphic*>(o);
}


GDockWidget * CDGraphics::graphicDock(Graphic * o) const {
	if (!o) return 0;
	foreach (GDockWidget * d, docks)
		if (d->widget() == o)
			return d;
	return 0;
}


void CDGraphics::addGraphic() {
	Graphic * g = new Graphic();
	g->setGraphicsCount(0);
	g->setBorderInputsVisible(false);
	g->setLegendVisible(true);
	g->viewport()->setAcceptDrops(true);
	g->viewport()->installEventFilter(this);
	GDockWidget * dw = new GDockWidget(QString("graphics %1").arg(graphics.size()), da);
	connect(dw, SIGNAL(removeRequest()), this, SLOT(removeGraphic()));
	dw->setWidget(g);
	da->addDockWidget(Qt::RightDockWidgetArea, dw);
	docks << dw;
	graphics << g;
}


void CDGraphics::removeGraphic() {
	GDockWidget * d = qobject_cast<GDockWidget * >(sender());
	if (!d) return;
	Graphic * g = qobject_cast<Graphic * >(d->widget());
	docks.removeAll(d);
	graphics.removeAll(g);
	g->deleteLater();
	d->deleteLater();
}


void CDGraphics::addXToGraphic(const QString & xp, Graphic * g) {
	qDebug() << "addGraphic" << xp << g;
	GDockWidget * d = graphicDock(g);
	if (xp.isEmpty() || !g || !d) return;
	CDType & t(X[CDCore::stringToPath(Q2PIString(xp))]);
	int gind = g->graphicsCount();
	g->setGraphicsCount(gind + 1);
	g->setGraphicName(PI2QString(t.pathString().join(".")), gind);
}


void CDGraphics::on_buttonAdd_clicked() {
	addGraphic();
}


void CDGraphics::on_buttonClear_clicked() {
	foreach (Graphic * g, graphics)
		g->clear();
}


void CDGraphics::on_buttonRemoveAll_clicked() {
	qDeleteAll(graphics);
	qDeleteAll(docks);
	graphics.clear();
	docks.clear();
}