SfaBrowser.py

   1 from Sink import Sink, SinkInfo
   2 from pyjamas.ui.Tree import Tree, TreeItem
   3 from pyjamas.ui.PopupPanel import PopupPanel
   4 from pyjamas.ui.HTML import HTML
   5 from SfaData import PlanetLabData
   6
   7 class PopupRecord(PopupPanel):
   8     def __init__(self, record):
   9         PopupPanel.__init__(self, True)
  10         contents = HTML("<pre>" + record + "</pre>")
  11         self.setWidget(contents)
  12
  13         self.setStyleName("ks-popups-Popup")
  14
  15 class SfaItem(TreeItem):
  16     def __init__(self, hrn, authority = False):
  17         self.isAuthority = authority
  18         self.hrn = hrn
  19         last = hrn.split('.')[-1]
  20         self.label = last
  21         TreeItem.__init__(self, self.label)
  22
  23         if self.isAuthority:
  24             self.addItem(PendingItem())
  25
  26 class PendingItem(TreeItem):
  27     def __init__(self):
  28         TreeItem.__init__(self, "Please wait...")
  29
  30     def isPendingItem(self):
  31         return True
  32
  33 class SfaBrowser(Sink):
  34     def __init__(self):
  35
  36         Sink.__init__(self)
  37
  38         self.data = PlanetLabData()
  39
  40         self.tree = Tree()
  41
  42         item = SfaItem("plc", True)
  43         self.tree.addItem(item)
  44
  45         item = SfaItem("ple", True)
  46         self.tree.addItem(item)
  47
  48         self.tree.addTreeListener(self)
  49
  50         self.initWidget(self.tree)
  51
  52
  53     def onTreeItemSelected(self, item):
  54         record = self.data.getRecord(item.hrn)
  55         p = PopupRecord(record)
  56         left = item.getAbsoluteLeft() + 10
  57         top = item.getAbsoluteTop() + 10
  58         p.setPopupPosition(left, top)
  59         p.show()
  60
  61     def onTreeItemStateChanged(self, item):
  62         child = item.getChild(0)
  63         if hasattr(child, "isPendingItem"):
  64             item.removeItem(child)
  65             hrns = self.data.listChildren(item.hrn)
  66             for (hrn, kind) in hrns:
  67                 item.addItem(SfaItem(hrn, (kind=="(authority)")))
  68
  69     def onShow(self):
  70         pass
  71
  72
  73 def init():
  74     return SinkInfo("Browse SFA", "SFA Hierarchy Browser", SfaBrowser)