import os
from PyQt4.QtCore import *
from PyQt4.QtGui import *
from sfa.util.rspecHelper import RSpec
from sface.sfahelper import *
from sface.sficonfig import config
from sface.sfiprocess import SfiProcess
from sface.screens.sfascreen import SfaScreen
class NodeView(QTreeView):
def __init__(self, parent):
QTreeView.__init__(self, parent)
self.setItemsExpandable(True)
self.setRootIsDecorated(True)
self.setAlternatingRowColors(True)
self.setSizePolicy(QSizePolicy.Expanding, QSizePolicy.Expanding)
class TreeItem:
def __init__(self, data, parent=None):
self.parentItem = parent
self.itemData = data
self.childItems = []
def clear(self):
print "TODO: TreeItem.clear()"
for child in self.childItems:
child.clear()
del child
del self.childItems
self.childItems = []
def appendChild(self, child):
self.childItems.append(child)
def child(self, row):
return self.childItems[row]
def childCount(self):
return len(self.childItems)
def columnCount(self):
return len(self.itemData)
def data(self, column):
return self.itemData[column]
def row(self):
if (self.parentItem):
try:
return self.parentItem.childItems.index(self)
except ValueError:
return 0
return 0
def parent(self):
return self.parentItem
class NodeModel(QAbstractItemModel):
def __init__(self, parent):
QAbstractItemModel.__init__(self, parent)
self.__initRoot()
def clear(self):
self.rootItem.clear()
self.__initRoot()
def __initRoot(self):
self.rootItem = TreeItem([QString("Testbed"), QString("Hostname")])
def columnCount(self, parent):
if parent.isValid():
return parent.internalPointer().columnCount()
else:
return self.rootItem.columnCount()
def data(self, index, role):
if not index.isValid():
return QVariant()
if role != Qt.DisplayRole:
return QVariant()
item = index.internalPointer()
return item.data(index.column())
def headerData(self, section, orientation, role):
if orientation == Qt.Horizontal and role == Qt.DisplayRole:
return self.rootItem.data(section)
return QVariant()
def flags(self, index):
if not index.isValid():
return 0
return Qt.ItemIsEnabled | Qt.ItemIsSelectable
def index(self, row, column, parent):
if not self.hasIndex(row, column, parent):
return QModelIndex()
parentItem = None
if not parent.isValid():
parentItem = self.rootItem
else:
parentItem = parent.internalPointer()
childItem = parentItem.child(row)
if childItem:
return self.createIndex(row, column, childItem)
else:
return QModelIndex()
def parent(self, index):
if not index.isValid():
return QModelIndex()
childItem = index.internalPointer()
parentItem = childItem.parent()
if not parentItem:
return QModelIndex()
if parentItem is self.rootItem:
return QModelIndex()
return self.createIndex(parentItem.row(), 0, parentItem)
def rowCount(self, parent):
if parent.column() > 0:
return 0
parentItem = None
if not parent.isValid():
parentItem = self.rootItem
else:
parentItem = parent.internalPointer()
return parentItem.childCount()
class SliceWidget(QWidget):
def __init__(self, parent):
QWidget.__init__(self, parent)
self.nodeView = NodeView(self)
self.nodeModel = NodeModel(self)
self.nodeView.setModel(self.nodeModel)
refresh = QLabel("Refresh", self)
refresh.setScaledContents(False)
slicename = QLabel ("Slice : %s"%(config.getSlice() or "None"),self)
slicename.setScaledContents(False)
hlayout = QHBoxLayout()
hlayout.addWidget(slicename)
hlayout.addStretch()
hlayout.addWidget(refresh)
layout = QVBoxLayout()
layout.addLayout(hlayout)
layout.addWidget(self.nodeView)
self.setLayout(layout)
self.setSizePolicy(QSizePolicy.Expanding, QSizePolicy.Expanding)
self.connect(refresh, SIGNAL('linkActivated(QString)'), self.refresh)
rspec_file = os.path.expanduser("~/.sfi/%s.rspec" % config.getSlice())
if os.path.exists(rspec_file):
self.updateView()
def readSliceRSpec(self):
rspec_file = os.path.expanduser("~/.sfi/%s.rspec" % config.getSlice())
xml = open(rspec_file).read()
return xml
def refresh(self, link=None):
if not config.getSlice():
self.parent().setStatus("Slice not set yet!")
return
self.process = SfiProcess()
outfile = self.process.getRSpecFromSM()
self.parent().setStatus("Updating slice data. This may take some time...")
self.connect(self.process, SIGNAL('finished()'), self.refreshFinished)
def refreshFinished(self):
del self.process
self.parent().setStatus("Slice data updated.")
self.updateView()
def updateView(self):
rspec_string = self.readSliceRSpec()
networks = rspec_get_networks(rspec_string)
for network in networks:
networkItem = TreeItem([QString(network), QString("")], self.nodeModel.rootItem)
all_nodes = rspec_get_nodes_from_network(rspec_string, network)
for node in all_nodes:
nodeItem = TreeItem([QString(""), QString(node)], networkItem)
networkItem.appendChild(nodeItem)
self.nodeModel.rootItem.appendChild(networkItem)
self.nodeView.expandAll()
class MainScreen(SfaScreen):
def __init__(self, parent):
SfaScreen.__init__(self, parent)
slice = SliceWidget(self)
self.init(slice, "Main Window", "PlanetLab Federation GUI")