/// Pass user's interaction with list to appropriate handler
    public void valueChanged(ListSelectionEvent e) {
      if (e.getSource() == sourceList) {
        if (!e.getValueIsAdjusting()) {
          int indexS = sourceList.getSelectedIndex();
          srcID = indexS + 1;
          drawTest.repaint();
        }
      }

      if (e.getSource() == destList) {
        if (!e.getValueIsAdjusting()) {
          int indexD = destList.getSelectedIndex();
          dstID = indexD + 17;
          drawTest.repaint();
        }
      }

      if (e.getSource() == routerList) {
        if (!e.getValueIsAdjusting()) {
          indexR = routerList.getSelectedIndex();

          Router temp = statMux.getRouter(indexR);
          int[] pList = temp.getPriorityList();
          audioVal.setText(String.valueOf(pList[0]));
          videoVal.setText(String.valueOf(pList[1]));
          textVal.setText(String.valueOf(pList[2]));
        }
      }

      if (e.getSource() == packTypeList) {
        if (!e.getValueIsAdjusting()) {
          int temp = packTypeList.getSelectedIndex();
          if (temp == 0) {
            type = PacketType.AUDIO;
          } else if (temp == 1) {
            type = PacketType.VIDEO;
          } else {
            type = PacketType.TEXT;
          }
          drawTest.repaint();
        }
      }
    }
    /// Check for button clicking and apply appropriate response
    public void actionPerformed(ActionEvent e) {
      /// For each input, pass it to the correct handler
      /// Priority of router will be updated based on input
      /// Upon user's changes of the priority value, repaint
      /// the display component
      if (e.getSource() == aPlus) {
        Router temp = statMux.getRouter(indexR);
        int[] pList = temp.getPriorityList();
        pList[0] = dataBound(pList[0] + 1);
        temp.setPriorityList(pList);
        audioVal.setText(String.valueOf(pList[0]));
        videoVal.setText(String.valueOf(pList[1]));
        textVal.setText(String.valueOf(pList[2]));
        drawTest.repaint();
      }

      if (e.getSource() == aMinus) {
        Router temp = statMux.getRouter(indexR);
        int[] pList = temp.getPriorityList();
        pList[0] = dataBound(pList[0] - 1);
        temp.setPriorityList(pList);
        audioVal.setText(String.valueOf(pList[0]));
        videoVal.setText(String.valueOf(pList[1]));
        textVal.setText(String.valueOf(pList[2]));
        drawTest.repaint();
      }

      if (e.getSource() == vPlus) {
        Router temp = statMux.getRouter(indexR);
        int[] pList = temp.getPriorityList();
        pList[1] = dataBound(pList[1] + 1);
        temp.setPriorityList(pList);
        audioVal.setText(String.valueOf(pList[0]));
        videoVal.setText(String.valueOf(pList[1]));
        textVal.setText(String.valueOf(pList[2]));
        drawTest.repaint();
      }

      if (e.getSource() == vMinus) {
        Router temp = statMux.getRouter(indexR);
        int[] pList = temp.getPriorityList();
        pList[1] = dataBound(pList[1] - 1);
        temp.setPriorityList(pList);
        audioVal.setText(String.valueOf(pList[0]));
        videoVal.setText(String.valueOf(pList[1]));
        textVal.setText(String.valueOf(pList[2]));
        drawTest.repaint();
      }

      if (e.getSource() == tPlus) {
        Router temp = statMux.getRouter(indexR);
        int[] pList = temp.getPriorityList();
        pList[2] = dataBound(pList[2] + 1);
        temp.setPriorityList(pList);
        audioVal.setText(String.valueOf(pList[0]));
        videoVal.setText(String.valueOf(pList[1]));
        textVal.setText(String.valueOf(pList[2]));
        drawTest.repaint();
      }

      if (e.getSource() == tMinus) {
        Router temp = statMux.getRouter(indexR);
        int[] pList = temp.getPriorityList();
        pList[2] = dataBound(pList[2] - 1);
        temp.setPriorityList(pList);
        audioVal.setText(String.valueOf(pList[0]));
        videoVal.setText(String.valueOf(pList[1]));
        textVal.setText(String.valueOf(pList[2]));
        drawTest.repaint();
      }
    }