/*
 * © Copyright 2014 – Urheberrechtshinweis
 * Alle Rechte vorbehalten / All Rights Reserved
 *
 * Programmcode ist urheberrechtlich geschuetzt.
 * Das Urheberrecht liegt, soweit nicht ausdruecklich anders gekennzeichnet, bei Frank Ebner.
 * Keine Verwendung ohne explizite Genehmigung.
 * (vgl. § 106 ff UrhG / § 97 UrhG)
 */

#include "../fixC11.h"

#include "LayerTree.h"

#include <QTreeView>
#include <QPushButton>
#include <QHBoxLayout>
#include <QGridLayout>

#include "../tree/MapTreeModel.h"
#include "../UIHelper.h"

LayerTree::LayerTree(QWidget *parent) : QWidget(parent) {

	QGridLayout* layGrid = new QGridLayout(this);

	tree = new QTreeView(this);
	tree->setMinimumSize(150, 200);

	QWidget* wButtons = new QWidget();
	QHBoxLayout* layButtons = new QHBoxLayout(wButtons);

	btnNew = new QPushButton(this);
	btnNew->setIcon(UIHelper::getIcon("add"));
	btnNew->setMaximumSize(32,32);
	btnNew->setMinimumSize(32,32);
	btnNew->setEnabled(false);
	layButtons->addWidget(btnNew);


	btnDelete = new QPushButton(this);
	btnDelete->setIcon(UIHelper::getIcon("remove"));
	btnDelete->setMaximumSize(32,32);
	btnDelete->setMinimumSize(32,32);
	btnDelete->setEnabled(false);
	layButtons->addWidget(btnDelete);

	layGrid->addWidget(tree, 0,0,1,1);
	layGrid->addWidget(wButtons, 1, 0, 1, 1);

	connect(btnNew, SIGNAL(clicked(bool)), this, SLOT(onBtnNew()));
	connect(btnDelete, SIGNAL(clicked(bool)), this, SLOT(onBtnDelete()));


}

void LayerTree::expandAll() {
	tree->expandAll();
}

void LayerTree::setModel(MapTreeModel* model) {

	this->model = model;
	this->tree->setModel(model);

	// tree model selection events
	if (!connect(tree->selectionModel(), SIGNAL(currentChanged(QModelIndex, QModelIndex)), this, SLOT(onLayerSelected(QModelIndex)))) {throw "error";}

}

void LayerTree::onLayerSelected(QModelIndex idx) {

	MapLayer* ml = static_cast<MapLayer*>(idx.internalPointer());

	MMFloors* floors = dynamic_cast<MMFloors*>(ml);
	btnNew->setEnabled( floors != nullptr );

	MMFloor* floor = dynamic_cast<MMFloor*>(ml);
	btnDelete->setEnabled( floor != nullptr );

	emit layerSelected(idx);

}


void LayerTree::onBtnNew() {
	QModelIndex idx = tree->selectionModel()->selectedIndexes().first();
	MapLayer* ml = static_cast<MapLayer*>(idx.internalPointer());
	MMFloors* floors = dynamic_cast<MMFloors*>(ml);
	if (floors) {
		floors->createFloor();
		model->getMapModel()->reset();
	}
}

void LayerTree::onBtnDelete() {
	QModelIndex idx = tree->selectionModel()->selectedIndexes().first();
	MapLayer* ml = static_cast<MapLayer*>(idx.internalPointer());
	MMFloor* floor= dynamic_cast<MMFloor*>(ml);
	if (floor) {
		floor->deleteMe();
		model->getMapModel()->reset();
	}
}