iface_browser.py

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