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