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#ifndef GRAPHWIDGET_H
#define GRAPHWIDGET_H

#include <QtGui/QGraphicsView>
#include <QList>
#include <QLabel>
#include <vector>

#include "stub/my-commmodel.h"
#include "mainwindow.h"
#include "point.h"

#define CIRCLE_RADIUS 200
#define PI 3.14159265

/**
 Calculates the location of points to create a circle
 @param center the center of the circle
 @param radius the radius of the circle
 @param numNodes the number of nodes
 @return a vector with Point objects
 */
std::vector<Point*> *getNPointsOnCircle(Point *center, int radius, int numNodes);

class Node;
class MainWindow;

/**
 This is the viewer. It contains the graphical nodes and edges.
 */
class GraphWidget : public QGraphicsView
{
    Q_OBJECT

public:
    GraphWidget(QWidget *parent = 0, CommModel *comm = 0);
    void itemMoved();
    void updateGraph(std::vector<node *> _nodes);
    void setSelectedIP(uint32_t newIP);
    uint32_t getSelectedIP();

    void setSourceMac(mac_t newMac);
    mac_t getSourceMac();

    void setDestinationMac(mac_t newMac);
    mac_t getDestinationMac();

    QList<Node *> allNodes; /** a list of all the graphical nodes */
    void updateNodesAndEdges();
    MainWindow * getMainWindow();
    void setMainWindow(MainWindow * _mainWindow);
    bool sameMacAddr(node* n1, node* n2);
    void plotNodes ();

    void setDoPhysics(bool val);
    bool getDoPhysics();
    void highlightPath(std::vector<node*> path);

protected:
    void timerEvent(QTimerEvent *event);
    void drawBackground(QPainter *painter, const QRectF &rect);
    bool checkIp(uint32_t ip_addr);
    bool checkMac(node* nx);
    Node * getNode(node * n);
    bool hasEdge(Node * n, node * nb);

    // circle plotting code
    bool _doPhysics; /** boolean flag that determines if physics effects are used */

private:
    int timerId; /** the id of the timer */
    Node *centerNode; /** pointer to the center node */
    uint32_t selectedIP; /** ip of the selected node */
    mac_t sourceMac; /** mac address of the source node */
    mac_t destMac; /** mac address of the destion node */
    //QList<Node *> allNodes;
    CommModel *comm;  /** reference to the CommModel */
    QGraphicsScene * scenex; /** the scene holds all the grpahical elements */
    MainWindow * mainWindow; /** reference to the main window */
    bool sourceSet; /** true if the source has been set */
    bool destSet; /** true if the destination has been set */
};

#endif