iface_browser.py

   1 import gtk
   2
   3 from model import Interface
   4 import properties
   5 from gui import policy
   6
   7 class InterfaceBrowser(gtk.ScrolledWindow):
   8         model = None
   9         root = None
  10         edit_properties = None
  11
  12         INTERFACE = 0
  13         INTERFACE_NAME = 1
  14         VERSION = 2
  15         SUMMARY = 3
  16
  17         def __init__(self):
  18                 self.edit_properties = gtk.Action('edit_properties',
  19                           'Interface Properties...',
  20                           'Set which implementation of this interface to use.',
  21                           gtk.STOCK_PROPERTIES)
  22                 self.edit_properties.set_property('sensitive', False)
  23
  24                 gtk.ScrolledWindow.__init__(self)
  25                 self.set_policy(gtk.POLICY_AUTOMATIC, gtk.POLICY_ALWAYS)
  26                 self.set_shadow_type(gtk.SHADOW_IN)
  27
  28                 self.model = gtk.TreeStore(object, str, str, str)
  29                 self.tree_view = tree_view = gtk.TreeView(self.model)
  30
  31                 text = gtk.CellRendererText()
  32
  33                 column = gtk.TreeViewColumn(_('Interface'), text,
  34                                           text = InterfaceBrowser.INTERFACE_NAME)
  35                 tree_view.append_column(column)
  36
  37                 column = gtk.TreeViewColumn(_('Version'), text,
  38                                           text = InterfaceBrowser.VERSION)
  39                 tree_view.append_column(column)
  40
  41                 column = gtk.TreeViewColumn(_('Description'), text,
  42                                           text = InterfaceBrowser.SUMMARY)
  43                 tree_view.append_column(column)
  44
  45                 self.add(tree_view)
  46                 tree_view.show()
  47
  48                 tree_view.set_enable_search(True)
  49
  50                 selection = tree_view.get_selection()
  51
  52                 def sel_changed(sel):
  53                         store, iter = sel.get_selected()
  54                         self.edit_properties.set_property('sensitive', iter != None)
  55                 selection.connect('changed', sel_changed)
  56
  57                 def button_press(tree_view, bev):
  58                         if bev.button != 1 or bev.type != gtk.gdk._2BUTTON_PRESS:
  59                                 return False
  60                         pos = tree_view.get_path_at_pos(int(bev.x), int(bev.y))
  61                         if not pos:
  62                                 return False
  63                         path, col, x, y = pos
  64                         properties.edit(self.model[path][InterfaceBrowser.INTERFACE])
  65                 tree_view.connect('button-press-event', button_press)
  66
  67                 def edit_selected(action):
  68                         store, iter = selection.get_selected()
  69                         assert iter
  70                         properties.edit(self.model[iter][InterfaceBrowser.INTERFACE])
  71                 self.edit_properties.connect('activate', edit_selected)
  72
  73                 self.connect('destroy', lambda s: policy.watchers.remove(self.build_tree))
  74                 policy.watchers.append(self.build_tree)
  75
  76         def set_root(self, root):
  77                 assert isinstance(root, Interface)
  78                 self.root = root
  79                 policy.recalculate()    # Calls build_tree
  80
  81         def build_tree(self):
  82                 self.model.clear()
  83                 parent = None
  84                 def add_node(parent, iface):
  85                         iter = self.model.append(parent)
  86                         self.model[iter][InterfaceBrowser.INTERFACE] = iface
  87                         self.model[iter][InterfaceBrowser.INTERFACE_NAME] = iface.get_name()
  88                         self.model[iter][InterfaceBrowser.SUMMARY] = iface.summary
  89
  90                         impl = policy.implementation.get(iface, None)
  91                         if impl:
  92                                 self.model[iter][InterfaceBrowser.VERSION] = impl.get_version()
  93                                 for child in impl.dependencies.values():
  94                                         add_node(iter, policy.get_interface(child.interface))
  95                         else:
  96                                 self.model[iter][InterfaceBrowser.VERSION] = '(choose)'
  97                 add_node(None, self.root)
  98                 self.tree_view.expand_all()