from PyQt4.QtCore import Qt, QString
from PyQt4.QtGui import QWidget, QLabel, QTreeView, QStandardItemModel, QVBoxLayout

from sfadata import SfaData
from sfascreen import SfaScreen


class SliceWidget(QWidget):
    def __init__(self, parent=None):
        QWidget.__init__(self, parent)

        self.nodeView = QTreeView(self)
        self.nodeView.setRootIsDecorated(False)
        self.nodeView.setAlternatingRowColors(True)

        self.nodeModel = QStandardItemModel(0, 2, self)
        self.nodeModel.setHeaderData(0, Qt.Horizontal, QString("Testbed"))
        self.nodeModel.setHeaderData(1, Qt.Horizontal, QString("Hostname"))

        self.nodeView.setModel(self.nodeModel)

        layout = QVBoxLayout()
        layout.addWidget(self.nodeView)
        self.setLayout(layout)
        
        self.refresh()

    def refresh(self):
        data = SfaData()
        rspec = data.getRSpecFromSM()
        nodes = rspec.get_node_list()
        
        for n in nodes:
            print n

    def addNode(self, testbed, hostname):
        self.nodeModel.insertRow(0)
        self.nodeModel.setData(self.nodeModel.index(0,0), QString(testbed))
        self.nodeModel.setData(self.nodeModel.index(0,1), QString(hostname))



class SfaMainScreen(SfaScreen):
    def __init__(self, parent=None):
        SfaScreen.__init__(self, parent)

        slice = SliceWidget(self)
        self.init(slice, "Main Window", "PlanetLab Federation GUI")