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 def alwaysDelegateFocus(elem):
   8     return True
   9
  10 class PopupRecord(PopupPanel):
  11     def __init__(self, record):
  12         PopupPanel.__init__(self, True)
  13         contents = HTML("<pre>" + record + "</pre>")
  14         self.setWidget(contents)
  15         self.setStyleName("ks-popups-Popup")
  16
  17 class SfaItem(TreeItem):
  18     def __init__(self, hrn, kind, truncate = True):
  19         self.kind = kind
  20         self.hrn = hrn
  21         if truncate:
  22             hrn = hrn.split('.')[-1]
  23         if self.kind == "(authority)":
  24             self.label = "<b>%s</b>" % hrn
  25         elif self.kind == "(slice)":
  26             self.label = "<u><i>%s</i></u>" % hrn
  27         elif self.kind == "(user)":
  28             self.label = "%s" % hrn
  29         else:
  30             self.label = "<b>%s</b>" % hrn
  31
  32         TreeItem.__init__(self, self.label)
  33
  34         if self.kind == "(authority)":
  35             self.addItem(PendingItem())
  36
  37 class PendingItem(TreeItem):
  38     def __init__(self):
  39         TreeItem.__init__(self, "Please wait...")
  40
  41     def isPendingItem(self):
  42         return True
  43
  44 class SfaBrowser(Sink):
  45     def __init__(self):
  46
  47         Sink.__init__(self)
  48
  49         self.data = PlanetLabData()
  50
  51         self.tree = Tree()
  52         self.tree.shouldTreeDelegateFocusToElement = alwaysDelegateFocus
  53
  54         item = SfaItem("plc", "(authority)", truncate = False)
  55         self.tree.addItem(item)
  56
  57         item = SfaItem("plc.glc", "(authority)", truncate = False)
  58         self.tree.addItem(item)
  59
  60         item = SfaItem("plc.vini", "(authority)", truncate = False)
  61         self.tree.addItem(item)
  62
  63         item = SfaItem("ple", "(authority)", truncate = False)
  64         self.tree.addItem(item)
  65
  66         item = SfaItem("plj", "(authority)", truncate = False)
  67         self.tree.addItem(item)
  68
  69         self.tree.addTreeListener(self)
  70
  71         self.initWidget(self.tree)
  72
  73
  74     def onTreeItemSelected(self, item):
  75         record = self.data.getRecord(item.hrn)
  76         p = PopupRecord(record)
  77         left = item.getAbsoluteLeft() + 10
  78         top = item.getAbsoluteTop() + 10
  79         p.setPopupPosition(left, top)
  80         p.show()
  81
  82     def onTreeItemStateChanged(self, item):
  83         child = item.getChild(0)
  84         if hasattr(child, "isPendingItem"):
  85             item.removeItem(child)
  86             hrns = sorted(self.data.listChildren(item.hrn),
  87                           key=lambda hrn: hrn[0])
  88             for (hrn, kind) in hrns:
  89                 item.addItem(SfaItem(hrn, kind))
  90
  91     def onShow(self):
  92         pass
  93
  94
  95 def init():
  96     return SinkInfo("Browse SFA", "SFA Hierarchy Browser", SfaBrowser)