/*
 * GraphPanel.java
 *
 * Created on December 3, 2003, 11:22 PM
 */

/**
 *
 * @author  linyuan
 */
public class GraphPanel extends javax.swing.JPanel {
    
    public Graph graph;
    public Selectable clip;
    int x;
    int y;
    
    /** Creates new form GraphPanel */
    public GraphPanel() {
        initComponents();
        graph=new Graph();
        clip=null;
        /*
        Vertex u=new Vertex(50,50);
        Vertex v=new Vertex(100,100);
        Edge e=new Edge(u,v);
        graph.add(u);
        graph.add(v);
        graph.add(e);
        graph.add(new Label(100,50,"label"));
         */
        setPreferredSize(new java.awt.Dimension(400, 400));
        
    }
    
    /** This method is called from within the constructor to
     * initialize the form.
     * WARNING: Do NOT modify this code. The content of this method is
     * always regenerated by the Form Editor.
     */
    private void initComponents() {//GEN-BEGIN:initComponents
        jPopupMenu1 = new javax.swing.JPopupMenu();
        jMenuItem1 = new javax.swing.JMenuItem();
        jMenuItem2 = new javax.swing.JMenuItem();
        jMenuItem3 = new javax.swing.JMenuItem();
        jDialog1 = new javax.swing.JDialog();
        jLabel1 = new javax.swing.JLabel();
        jComboBox1 = new javax.swing.JComboBox();
        jLabel2 = new javax.swing.JLabel();
        jLabel3 = new javax.swing.JLabel();
        jLabel5 = new javax.swing.JLabel();
        jLabel6 = new javax.swing.JLabel();
        jLabel7 = new javax.swing.JLabel();
        jColorChooser1 = new javax.swing.JColorChooser();
        jLabel4 = new javax.swing.JLabel();

        jMenuItem1.setText("delete");
        jMenuItem1.addActionListener(new java.awt.event.ActionListener() {
            public void actionPerformed(java.awt.event.ActionEvent evt) {
                jMenuItem1ActionPerformed(evt);
            }
        });

        jPopupMenu1.add(jMenuItem1);
        jMenuItem2.setText("Property");
        jMenuItem2.setEnabled(false);
        jMenuItem2.addActionListener(new java.awt.event.ActionListener() {
            public void actionPerformed(java.awt.event.ActionEvent evt) {
                jMenuItem2ActionPerformed(evt);
            }
        });

        jPopupMenu1.add(jMenuItem2);
        jMenuItem3.setText("Copy");
        jMenuItem3.addActionListener(new java.awt.event.ActionListener() {
            public void actionPerformed(java.awt.event.ActionEvent evt) {
                jMenuItem3ActionPerformed(evt);
            }
        });

        jPopupMenu1.add(jMenuItem3);
        jDialog1.getContentPane().setLayout(new java.awt.GridLayout(4, 2));

        jLabel1.setText("radius");
        jDialog1.getContentPane().add(jLabel1);

        jDialog1.getContentPane().add(jComboBox1);

        jLabel2.setText("x");
        jDialog1.getContentPane().add(jLabel2);

        jLabel3.setText("y");
        jDialog1.getContentPane().add(jLabel3);

        jLabel5.setText("y");
        jDialog1.getContentPane().add(jLabel5);

        jLabel6.setText("jLabel6");
        jDialog1.getContentPane().add(jLabel6);

        jLabel7.setText("color");
        jDialog1.getContentPane().add(jLabel7);

        jDialog1.getContentPane().add(jColorChooser1);

        jLabel4.setText("jLabel4");

        setLayout(new java.awt.BorderLayout());

        addKeyListener(new java.awt.event.KeyAdapter() {
            public void keyPressed(java.awt.event.KeyEvent evt) {
                formKeyPressed(evt);
            }
            public void keyReleased(java.awt.event.KeyEvent evt) {
                formKeyReleased(evt);
            }
        });

        addMouseListener(new java.awt.event.MouseAdapter() {
            public void mouseClicked(java.awt.event.MouseEvent evt) {
                formMouseClicked(evt);
            }
            public void mousePressed(java.awt.event.MouseEvent evt) {
                formMousePressed(evt);
            }
            public void mouseReleased(java.awt.event.MouseEvent evt) {
                formMouseReleased(evt);
            }
        });

        addMouseMotionListener(new java.awt.event.MouseMotionAdapter() {
            public void mouseDragged(java.awt.event.MouseEvent evt) {
                formMouseDragged(evt);
            }
        });

    }//GEN-END:initComponents

    private void formKeyPressed(java.awt.event.KeyEvent evt) {//GEN-FIRST:event_formKeyPressed
        // Add your handling code here:
       switch (evt.getKeyCode()) { 
        case 127: //  delete
        // if (e.getModifiers()==0)
            if(Selectable.selected instanceof Vertex){
                graph.delete((Vertex) Selectable.selected);
            }
            
            if(Selectable.selected instanceof Edge){
                graph.delete((Edge) Selectable.selected);
            }

            if(Selectable.selected instanceof Label){
                Label l=(Label) Selectable.selected;
                l.shortenLabel();
            }
            repaint(0);
            evt.consume();
            return;
        }
    }//GEN-LAST:event_formKeyPressed

    private void formKeyReleased(java.awt.event.KeyEvent evt) {//GEN-FIRST:event_formKeyReleased
        // Add your handling code here:
          if(Selectable.selected instanceof Label){
            Label l=(Label) Selectable.selected;
            l.extendLabel(evt.getKeyChar());
            repaint(0);
        }
         
          else if(Selectable.selected==null){
            Label l=new Label(x,y,"");
            l.extendLabel(evt.getKeyChar());
            System.out.println(l.label+evt.getKeyCode());
            graph.add(l);
            Selectable.select(l);
            repaint(0);
        }  
        
        evt.consume();
     
    }//GEN-LAST:event_formKeyReleased

    private void jMenuItem3ActionPerformed(java.awt.event.ActionEvent evt) {//GEN-FIRST:event_jMenuItem3ActionPerformed
        // Add your handling code here:
        //copy the current vertex or edge.
        clip=Selectable.selected;
    }//GEN-LAST:event_jMenuItem3ActionPerformed

    private void jMenuItem2ActionPerformed(java.awt.event.ActionEvent evt) {//GEN-FIRST:event_jMenuItem2ActionPerformed
        // Add your handling code here:
    }//GEN-LAST:event_jMenuItem2ActionPerformed

    private void jMenuItem1ActionPerformed(java.awt.event.ActionEvent evt) {//GEN-FIRST:event_jMenuItem1ActionPerformed
        // Add your handling code here:
         //System.out.println("delete the vertex");
        if(Selectable.selected instanceof Vertex){ 
            Vertex v=(Vertex) Selectable.selected;
            graph.delete(v);
            Selectable.unselect();
            repaint(0);
        }
        else if(Selectable.selected instanceof Edge){ 
            Edge e =(Edge) Selectable.selected;
            graph.delete(e);
            Selectable.unselect();
            repaint(0);
        }
    }//GEN-LAST:event_jMenuItem1ActionPerformed

    private void formMouseReleased(java.awt.event.MouseEvent evt) {//GEN-FIRST:event_formMouseReleased
        // Add your handling code here:
         if(Selectable.selected instanceof HalfEdge){
            HalfEdge h = (HalfEdge) Selectable.selected;
            Vertex v=graph.hitVertex(evt.getX(), evt.getY());
            if(v==null||v==h.u) Selectable.unselect();
            else {
                Edge e = new Edge(h.u,v);
                graph.add(e);
                Selectable.select(e);
            }
            repaint(0);
        }
    }//GEN-LAST:event_formMouseReleased

    private void formMousePressed(java.awt.event.MouseEvent evt) {//GEN-FIRST:event_formMousePressed
        // Add your handling code here:
        x=evt.getX();
        y=evt.getY();
        Vertex v=graph.hitVertex(x,y);
        Edge e=graph.hitEdge(x,y);
        Label l=graph.hitLabel(x,y);
        if(l!=null){
            Selectable.select(l);
            repaint(0);
            return;
        }
            
        if(v!=null){
            if(v==Selectable.selected){
                if((evt.getModifiers() & evt.ALT_MASK)!=0){
                     add(jPopupMenu1);
                     jMenuItem3.setEnabled(true);
                     jPopupMenu1.show(this,x,y);
                }
                else {
                     //add new edge
                    HalfEdge h=new HalfEdge(v,x,y);
                    Selectable.select(h);
                    repaint(0);
                    h.draw(getGraphics());
                }
            }
            else{
                 Selectable.select(v);
                 repaint(0);
            }
        }
        else if(e==Selectable.selected){
              if((evt.getModifiers() & evt.ALT_MASK)!=0){
                     add(jPopupMenu1);
                     jMenuItem3.setEnabled(false);
                     jPopupMenu1.show(this,x,y);
              }
              else{
                 Selectable.select(v);
                 repaint(0);
            }
        }
        else{
                 Selectable.select(v);
                 repaint(0);
            }
    }//GEN-LAST:event_formMousePressed

    private void formMouseDragged(java.awt.event.MouseEvent evt) {//GEN-FIRST:event_formMouseDragged
        // Add your handling code here:
         int x=evt.getX();
        int y=evt.getY();
        if (Selectable.selected instanceof Vertex) {
           Vertex v = (Vertex) Selectable.selected;
           v.x=x;
           v.y=y;
           evt.consume();
           repaint(0);
           evt.consume();
        }
        else if(Selectable.selected instanceof HalfEdge){
            HalfEdge h = (HalfEdge) Selectable.selected;
            h.x=x;
            h.y=y;
            repaint(0);
            h.draw(getGraphics());
            evt.consume();
        }
        else if(Selectable.selected instanceof Label){
            Label l=(Label ) Selectable.selected;
            l.x=x;
            l.y=y;
            evt.consume();
            repaint(0);
        }
    }//GEN-LAST:event_formMouseDragged

    private void formMouseClicked(java.awt.event.MouseEvent evt) {//GEN-FIRST:event_formMouseClicked
        // Add your handling code here:
        int x=evt.getX();
        int y=evt.getY();
        Vertex v=graph.hitVertex(x,y);
        if(v!=null){
            Selectable.select(v);
            repaint(0);
        }
        else {
            Edge e=graph.hitEdge(x,y);
            if(e!=null){
                Selectable.select(e);
                repaint(0);
            }
            else if(evt.getClickCount()>1){
                v=new Vertex(x,y);
                graph.add(v);
                Selectable.select(v);
                if(clip instanceof Vertex){
                    Vertex u=(Vertex) clip;
                    for(int i=0;i<u.edges.size();i++){
                        Edge e1=(Edge) u.edges.get(i);
                        if(e1.u==u){
                            graph.add(new Edge(v, e1.v));
                        }
                        else
                            graph.add(new Edge(v, e1.u));
                        
                        
                    }
                    
                }
                repaint(0);
            }
            else{
                Selectable.unselect();
                repaint(0);
            }
        }
    }//GEN-LAST:event_formMouseClicked

    protected void paintComponent(java.awt.Graphics g) {
        g.setColor(java.awt.Color.white);
        g.fillRect(0,0,getWidth(),getHeight());
        graph.draw(g);
        if(Selectable.selected instanceof HalfEdge){
           ((HalfEdge) Selectable.selected).draw(g);
       }
    }    
    
    
    // Variables declaration - do not modify//GEN-BEGIN:variables
    private javax.swing.JLabel jLabel4;
    private javax.swing.JLabel jLabel1;
    private javax.swing.JLabel jLabel3;
    private javax.swing.JMenuItem jMenuItem2;
    private javax.swing.JLabel jLabel2;
    private javax.swing.JMenuItem jMenuItem3;
    private javax.swing.JDialog jDialog1;
    private javax.swing.JMenuItem jMenuItem1;
    private javax.swing.JLabel jLabel7;
    private javax.swing.JColorChooser jColorChooser1;
    private javax.swing.JLabel jLabel6;
    private javax.swing.JComboBox jComboBox1;
    private javax.swing.JPopupMenu jPopupMenu1;
    private javax.swing.JLabel jLabel5;
    // End of variables declaration//GEN-END:variables
    
}