Dome/Namespaces.py

   1 from xml.dom import XMLNS_NAMESPACE, XML_NAMESPACE
   2 from constants import DOME_NS
   3 from Ft.Xml.XPath import FT_EXT_NAMESPACE
   4
   5 import rox
   6 from rox import g
   7
   8 fixed_ns = {'xml': XML_NAMESPACE, 'xmlns': XMLNS_NAMESPACE,
   9             'ext': FT_EXT_NAMESPACE,
  10             'dome': DOME_NS}
  11
  12 common_ns = {'http://www.w3.org/1999/xhtml': 'xhtml',
  13              'http://www.w3.org/1999/02/22-rdf-syntax-ns#': 'rdf',
  14              'http://xmlns.4suite.org/ext': 'ft',
  15              'http://www.w3.org/1999/XSL/Transform': 'xsl',
  16              'http://www.w3.org/2001/XMLSchema': 'xsd',
  17              'http://www.w3.org/1999/XMLSchema-instance': 'xsi',
  18              'http://schemas.xmlsoap.org/soap/envelope/': 'env',
  19              'http://www.w3.org/1999/xlink': 'xlink'}
  20
  21 class Namespaces(g.GenericTreeModel):
  22         def __init__(self):
  23                 g.GenericTreeModel.__init__(self)
  24                 self.uri = dict(fixed_ns)
  25                 self.update_list()
  26
  27         def update_list(self):
  28                 self.list = self.uri.keys()
  29                 self.list.sort()
  30                 pre = self.prefix = {}
  31                 for p, u in self.uri.iteritems():
  32                         pre[u] = p
  33
  34         def on_get_n_columns(self):
  35                 return 2
  36
  37         def on_get_iter(self, path):
  38                 assert len(path) == 1
  39                 return path[0]
  40
  41         def on_get_value(self, iter, column):
  42                 if column == 0:
  43                         return self.list[iter]
  44                 return self.uri[self.list[iter]]
  45
  46         def on_iter_nth_child(self, iter, n):
  47                 if iter == None:
  48                         return n
  49                 return None
  50
  51         def on_get_column_type(self, col):
  52                 return str
  53
  54         def on_iter_has_child(self, iter):
  55                 return False
  56
  57         def on_iter_next(self, iter):
  58                 if iter < len(self.list) - 1:
  59                         return iter + 1
  60
  61         def __setitem__(self, prefix, uri):
  62                 if prefix in self.uri and self.uri[prefix] == uri:
  63                         return
  64
  65                 assert prefix
  66                 if prefix in fixed_ns:
  67                         raise Exception('That namespace prefix cannot be changed')
  68                 if uri in self.prefix:
  69                         raise Exception('That namespace already has a prefix (%s)' % self.prefix[uri])
  70
  71                 modifed = prefix in self.uri
  72
  73                 self.uri[prefix] = uri
  74                 self.update_list()
  75                 path = (self.list.index(prefix),)
  76
  77                 if modifed:
  78                         self.emit('row-changed', path, self.get_iter(path))
  79                 else:
  80                         self.emit('row-inserted', path, self.get_iter(path))
  81
  82         def __delitem__(self, iter):
  83                 prefix = self[iter][0]
  84                 if prefix in fixed_ns:
  85                         raise Exception('This is a built-in namespace and cannot be deleted')
  86                 path = (self.list.index(prefix),)
  87                 del self.uri[prefix]
  88                 self.update_list()
  89                 self.emit('row-deleted', path)
  90
  91         def ensure_ns(self, suggested_prefix, uri):
  92                 """Return the prefix for this URI. If none is set choose one (using suggested_prefix
  93                 if possible)."""
  94                 try:
  95                         return self.prefix[uri]
  96                 except KeyError:
  97                         if not suggested_prefix:
  98                                 suggested_prefix = common_ns.get(uri, 'ns')
  99                         if suggested_prefix in self.uri:
 100                                 x = 1
 101                                 while suggested_prefix + `x` in self.uri: x += 1
 102                                 suggested_prefix += `x`
 103                         self[suggested_prefix] = uri
 104                         #print "Added", suggested_prefix, uri
 105                         return suggested_prefix
 106
 107         def to_xml(self, doc):
 108                 node = doc.createElementNS(DOME_NS, 'dome:namespaces')
 109                 for prefix, uri in self.uri.iteritems():
 110                         if prefix in fixed_ns: continue
 111                         ns = doc.createElementNS(DOME_NS, 'dome:ns')
 112                         ns.setAttributeNS(None, 'prefix', prefix)
 113                         ns.setAttributeNS(None, 'uri', uri)
 114                         node.appendChild(ns)
 115                 return node
 116
 117 class GUI(rox.Dialog):
 118         def __init__(self, model):
 119                 rox.Dialog.__init__(self)
 120                 self.model = model
 121
 122                 self.add_button(g.STOCK_ADD, 1)
 123                 self.add_button(g.STOCK_DELETE, 2)
 124                 self.add_button(g.STOCK_CLOSE, g.RESPONSE_OK)
 125
 126                 tree = g.TreeView(model.namespaces)
 127
 128                 def response(dialog, resp):
 129                         if resp == 1:
 130                                 dialog.add_new(model.namespaces)
 131                         elif resp == 2:
 132                                 dialog.delete_selected(tree.get_selection())
 133                         else:
 134                                 dialog.destroy()
 135                 self.connect('response', response)
 136                 self.set_position(g.WIN_POS_MOUSE)
 137                 self.set_title('Namespaces for ' + `model.uri`)
 138
 139                 frame = g.Frame()
 140                 frame.add(tree)
 141                 frame.set_shadow_type(g.SHADOW_IN)
 142
 143                 cell = g.CellRendererText()
 144                 column = g.TreeViewColumn('Prefix', cell, text = 0)
 145                 tree.append_column(column)
 146
 147                 column = g.TreeViewColumn('URI', cell, text = 1)
 148                 tree.append_column(column)
 149
 150                 frame.show_all()
 151
 152                 self.vbox.pack_start(frame, True, True)
 153                 self.set_default_size(400, 200)
 154
 155                 self.set_has_separator(False)
 156
 157         def delete_selected(self, sel):
 158                 model, iter = sel.get_selected()
 159                 if not iter:
 160                         rox.alert('Select a namespace binding to delete')
 161                         return
 162                 try:
 163                         del model[iter]
 164                 except:
 165                         rox.report_exception()
 166
 167         def add_new(self, ns):
 168                 d = rox.Dialog()
 169
 170                 hbox = g.HBox(False, 2)
 171                 d.vbox.pack_start(hbox, False, True)
 172                 hbox.pack_start(g.Label('Prefix:'), False, True, 0)
 173                 prefix = g.Entry()
 174                 hbox.pack_start(prefix, True, True, 0)
 175
 176                 def check_prefix(entry):
 177                         if not uri.get_text():
 178                                 pre = prefix.get_text()
 179                                 for u, p in common_ns.iteritems():
 180                                         if p == pre:
 181                                                 uri.set_text(u)
 182                                                 break
 183                         uri.grab_focus()
 184
 185                 prefix.connect('activate', check_prefix)
 186
 187                 hbox = g.HBox(False, 2)
 188                 d.vbox.pack_start(hbox, False, True)
 189                 hbox.pack_start(g.Label('Namespace URI:'), False, True, 0)
 190                 uri = g.Entry()
 191                 hbox.pack_start(uri, True, True, 0)
 192                 uri.set_activates_default(True)
 193
 194                 d.vbox.show_all()
 195                 d.set_position(g.WIN_POS_MOUSE)
 196
 197                 prefix.grab_focus()
 198
 199                 d.add_button(g.STOCK_CANCEL, g.RESPONSE_CANCEL)
 200                 d.add_button(g.STOCK_OK, g.RESPONSE_OK)
 201
 202                 d.set_default_response(g.RESPONSE_OK)
 203
 204                 while 1:
 205                         if d.run() != g.RESPONSE_OK:
 206                                 d.destroy()
 207                                 return
 208                         try:
 209                                 ns[prefix.get_text()] = uri.get_text()
 210                                 break
 211                         except:
 212                                 rox.report_exception()
 213                 d.destroy()