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, kind):
  17         self.kind = kind
  18         self.hrn = hrn
  19         last = hrn.split('.')[-1]
  20         if self.kind == "(authority)":
  21             self.label = "<b>%s</b>" % last
  22         elif self.kind == "(slice)":
  23             self.label = "<u><i>%s</i></u>" % last
  24         elif self.kind == "(user)":
  25             self.label = "%s" % last
  26         else:
  27             self.label = "<b>%s</b>" % last
  28
  29         TreeItem.__init__(self, self.label)
  30
  31         if self.kind == "(authority)":
  32             self.addItem(PendingItem())
  33
  34 class PendingItem(TreeItem):
  35     def __init__(self):
  36         TreeItem.__init__(self, "Please wait...")
  37
  38     def isPendingItem(self):
  39         return True
  40
  41 class SfaBrowser(Sink):
  42     def __init__(self):
  43
  44         Sink.__init__(self)
  45
  46         self.data = PlanetLabData()
  47
  48         self.tree = Tree()
  49
  50         item = SfaItem("plc", "(authority)")
  51         self.tree.addItem(item)
  52
  53         item = SfaItem("ple", "(authority)")
  54         self.tree.addItem(item)
  55
  56         self.tree.addTreeListener(self)
  57
  58         self.initWidget(self.tree)
  59
  60
  61     def onTreeItemSelected(self, item):
  62         record = self.data.getRecord(item.hrn)
  63         p = PopupRecord(record)
  64         left = item.getAbsoluteLeft() + 10
  65         top = item.getAbsoluteTop() + 10
  66         p.setPopupPosition(left, top)
  67         p.show()
  68
  69     def onTreeItemStateChanged(self, item):
  70         self.tree.moveFocus(item)
  71         child = item.getChild(0)
  72         if hasattr(child, "isPendingItem"):
  73             item.removeItem(child)
  74             hrns = sorted(self.data.listChildren(item.hrn),
  75                           key=lambda hrn: hrn[0])
  76             for (hrn, kind) in hrns:
  77                 item.addItem(SfaItem(hrn, kind))
  78
  79     def onShow(self):
  80         pass
  81
  82
  83 def init():
  84     return SinkInfo("Browse SFA", "SFA Hierarchy Browser", SfaBrowser)