editor.py

   1 import rox
   2 from rox import g
   3 import os
   4 import type
   5 import fields
   6
   7 edit_boxes = {}
   8
   9 ADD = 1
  10 DELETE = 2
  11 EDIT = 3
  12
  13 class Editor(rox.Dialog):
  14         def __init__(self):
  15                 rox.Dialog.__init__(self)
  16                 self.set_default_size(600, 400)
  17                 self.set_has_separator(False)
  18
  19                 self.add_type = None
  20
  21                 self.add_button(g.STOCK_ADD, ADD)
  22                 self.add_button(g.STOCK_DELETE, DELETE)
  23                 self.add_button(g.STOCK_PROPERTIES, EDIT)
  24                 self.add_button(g.STOCK_CLOSE, g.RESPONSE_CANCEL)
  25
  26                 self.set_default_response(g.RESPONSE_CANCEL)
  27
  28                 swin = g.ScrolledWindow()
  29                 swin.set_border_width(4)
  30                 swin.set_policy(g.POLICY_NEVER, g.POLICY_ALWAYS)
  31                 swin.set_shadow_type(g.SHADOW_IN)
  32                 self.vbox.pack_start(swin, True, True, 0)
  33
  34                 self.mime_model = g.TreeStore(str, str)
  35                 view = g.TreeView(self.mime_model)
  36                 self.view = view
  37                 swin.add(view)
  38                 view.set_search_column(1)
  39
  40                 cell = g.CellRendererText()
  41                 column = g.TreeViewColumn('MIME-Type', cell, text = 0)
  42                 view.append_column(column)
  43                 column.set_sort_column_id(0)
  44
  45                 cell = g.CellRendererText()
  46                 column = g.TreeViewColumn('Description', cell, text = 1)
  47                 view.append_column(column)
  48                 column.set_sort_column_id(1)
  49
  50                 view.connect('row-activated', self.activate)
  51
  52                 self.vbox.show_all()
  53
  54                 def response(self, resp):
  55                         if resp == EDIT:
  56                                 self.edit_selected(view.get_selection())
  57                         elif resp == DELETE:
  58                                 self.delete_type(view)
  59                         elif resp == ADD:
  60                                 if self.add_type:
  61                                         self.add_type.present()
  62                                 else:
  63                                         self.add_type = NewType()
  64                                         def destroyed(widget): self.add_type = None
  65                                         self.add_type.connect('destroy', destroyed)
  66                                         self.add_type.show()
  67                         else:
  68                                 self.destroy()
  69                 self.connect('response', response)
  70
  71                 def changed(selection):
  72                         model, iter = selection.get_selected()
  73                         self.set_response_sensitive(EDIT, iter != None)
  74                         self.set_response_sensitive(DELETE, iter != None)
  75                 selection = view.get_selection()
  76                 selection.connect('changed', changed)
  77                 changed(selection)
  78
  79         def delete_type(self, view):
  80                 model, iter = view.get_selection().get_selected()
  81                 if not iter:
  82                         rox.alert('Nothing selected')
  83                         return
  84                 type_name = model.get_value(iter, 0)
  85                 type.delete_type(type_name)
  86
  87         def update(self):
  88                 self.set_title('Scanning... please wait')
  89                 g.gdk.flush()
  90
  91                 type.init()
  92
  93                 self.mime_model.clear()
  94
  95                 medias = {}
  96
  97                 def items_cmp(a, b):
  98                         return cmp(a[1], b[1])
  99                 def caps(a):
 100                         return a[:1].upper() + a[1:]
 101                 items = [(t, caps(t.get_comment())) for t in type.types.values()]
 102                 items.sort(items_cmp)
 103                 for t, c in items:
 104                         iter = self.mime_model.append(None)
 105                         self.mime_model.set(iter, 1, c, 0, t.get_name())
 106
 107                 self.set_title('MIME-Editor')
 108
 109                 for b in edit_boxes.values():
 110                         if b.mime_type in type.types:
 111                                 b.update()
 112                         else:
 113                                 b.destroy()
 114
 115         def activate(self, view, path, column):
 116                 iter = self.mime_model.get_iter(path)
 117                 type_name = self.mime_model.get_value(iter, 0)
 118                 self.edit(type_name)
 119
 120         def edit(self, type_name):
 121                 if type_name in edit_boxes:
 122                         edit_boxes[type_name].present()
 123                 else:
 124                         box = EditBox(type_name)
 125                         edit_boxes[type_name] = box
 126                         def destroy(dialog): del edit_boxes[type_name]
 127                         box.connect('destroy', destroy)
 128                         box.show()
 129
 130         def edit_selected(self, selection):
 131                 model, iter = selection.get_selected()
 132                 if not iter:
 133                         rox.alert('You need to select a type to edit first')
 134                 else:
 135                         type_name = model.get_value(iter, 0)
 136                         self.edit(type_name)
 137
 138         def show_type(self, type_name):
 139                 model = self.mime_model
 140                 iter = model.get_iter_first()
 141                 while iter:
 142                         name = model.get_value(iter, 0)
 143                         if name == type_name:
 144                                 path = model.get_path(iter)
 145                                 self.view.set_cursor(path, None, False)
 146                                 return
 147                         iter = model.iter_next(iter)
 148
 149 class EditBox(rox.Dialog):
 150         def __init__(self, type_name):
 151                 rox.Dialog.__init__(self)
 152                 self.set_has_separator(False)
 153                 self.set_default_size(-1, 400)
 154                 self.mime_type = type_name
 155
 156                 self.set_title('MIME-Editor: %s' % type_name)
 157
 158                 swin = g.ScrolledWindow()
 159                 swin.set_border_width(4)
 160                 swin.set_shadow_type(g.SHADOW_IN)
 161                 self.vbox.pack_start(swin, True, True, 0)
 162
 163                 self.model = g.TreeStore(str, object, g.gdk.Color)
 164                 view = g.TreeView(self.model)
 165                 self.view = view
 166                 swin.add(view)
 167
 168                 cell = g.CellRendererText()
 169                 column = g.TreeViewColumn(type_name, cell, text = 0, foreground_gdk = 2)
 170                 view.append_column(column)
 171
 172                 swin.set_policy(g.POLICY_NEVER, g.POLICY_AUTOMATIC)
 173                 self.update()
 174
 175                 self.add_button(g.STOCK_ADD, ADD)
 176                 self.add_button(g.STOCK_DELETE, DELETE)
 177                 self.add_button(g.STOCK_PROPERTIES, EDIT)
 178                 self.add_button(g.STOCK_CLOSE, g.RESPONSE_CANCEL)
 179                 def response(w, resp):
 180                         if resp == ADD:
 181                                 self.add_field(view)
 182                         elif resp == DELETE:
 183                                 self.delete_field(view)
 184                         elif resp == EDIT:
 185                                 self.edit_field(view)
 186                         else:
 187                                 self.destroy()
 188                 self.connect('response', response)
 189
 190                 def changed(selection):
 191                         model, iter = selection.get_selected()
 192                         on_field = False
 193                         if iter != None:
 194                                 path = model.get_path(iter)
 195                                 on_field = len(path) > 1
 196                         self.set_response_sensitive(ADD, iter != None)
 197                         self.set_response_sensitive(EDIT, on_field)
 198                         self.set_response_sensitive(DELETE, on_field)
 199                 selection = view.get_selection()
 200                 selection.connect('changed', changed)
 201                 def may_change(path):
 202                         "Prevent selecting greyed-out lines"
 203                         iter = self.model.get_iter(path)
 204                         if self.model.get_value(iter, 2):
 205                                 return False
 206                         return True
 207                 selection.set_select_function(may_change)
 208                 changed(selection)
 209
 210                 def activate(view, path, column):
 211                         iter = self.model.get_iter(path)
 212                         if self.model.get_value(iter, 2):
 213                                 return  # Shaded
 214                         field = self.model.get_value(iter, 1)
 215                         if len(path) == 1:
 216                                 self.add_new_field(field)
 217                         else:
 218                                 field.edit()
 219                 view.connect('row-activated', activate)
 220
 221                 self.set_default_response(g.RESPONSE_CANCEL)
 222
 223                 label = g.Label("Shaded entries are provided by system packages and cannot "
 224                                 "be edited or deleted. However, any information you add will "
 225                                 "take precedence over them.")
 226                 label.set_line_wrap(True)
 227                 self.vbox.pack_start(label, False, True, 0)
 228
 229                 self.vbox.show_all()
 230
 231         def update(self):
 232                 grey = self.get_style().fg[g.STATE_INSENSITIVE]
 233                 def build(parent, fields):
 234                         fields.sort(lambda a, b: cmp(str(a), str(b)))
 235                         for field in fields:
 236                                 iter = self.model.append(parent)
 237                                 if field.can_edit():
 238                                         self.model.set(iter, 0, str(field), 1, field)
 239                                 else:
 240                                         self.model.set(iter, 0, str(field), 1, field, 2, grey)
 241                                 build(iter, field.get_sub_fields())
 242                 t = type.get_type(self.mime_type)
 243                 self.model.clear()
 244                 for aspect, getter, klass in [('Name matching', t.get_globs, fields.Glob),
 245                                              ('Contents matching', t.get_magic, fields.Magic),
 246                                              ('XML namespace matching', t.get_xml, fields.XML),
 247                                              ('Others', t.get_others, None),
 248                                              ('Descriptions', t.get_comments, fields.Comment)]:
 249                         iter = self.model.append(None)
 250                         if klass:
 251                                 self.model.set(iter, 0, aspect, 1, klass)
 252                         else:
 253                                 self.model.set(iter, 0, aspect, 1, klass, 2, grey)
 254                         build(iter, getter())
 255                 self.view.expand_all()
 256
 257         def add_new_field(self, klass):
 258                 if not klass: return
 259                 new = klass(type.get_type(self.mime_type))
 260                 new.edit()
 261
 262         def add_field(self, view):
 263                 model, iter = view.get_selection().get_selected()
 264                 if not iter:
 265                         rox.alert('You need to select a group, so I know what kind of thing to add')
 266                         return
 267                 path = model.get_path(iter)
 268                 field = model.get_value(model.get_iter(path), 1)
 269                 if isinstance(field, fields.Field) and hasattr(field, 'add_sub_field'):
 270                         field.add_sub_field()   # For magic
 271                 else:
 272                         field = model.get_value(model.get_iter(path[:1]), 1)
 273                         self.add_new_field(field)
 274
 275         def delete_field(self, view):
 276                 model, iter = view.get_selection().get_selected()
 277                 if not iter:
 278                         rox.alert("Nothing selected!")
 279                 field = model.get_value(iter, 1)
 280                 assert field
 281                 field.delete()
 282
 283         def edit_field(self, view):
 284                 model, iter = view.get_selection().get_selected()
 285                 if not iter:
 286                         rox.alert("Nothing selected!")
 287                 field = model.get_value(iter, 1)
 288                 assert field
 289                 field.edit()
 290
 291 class NewType(rox.Dialog):
 292         def __init__(self):
 293                 rox.Dialog.__init__(self)
 294                 self.set_title('Add new MIME type')
 295
 296                 self.add_button(g.STOCK_CANCEL, g.RESPONSE_CANCEL)
 297                 self.add_button(g.STOCK_ADD, g.RESPONSE_OK)
 298                 self.set_default_response(g.RESPONSE_OK)
 299
 300                 vbox = g.VBox(False, 4)
 301                 self.vbox.pack_start(vbox, True, True, 0)
 302                 vbox.set_border_width(4)
 303
 304                 hbox = g.HBox(False, 4)
 305                 vbox.pack_start(hbox, False, True, 0)
 306                 label = g.Label("Media type:")
 307                 hbox.pack_start(label, False, True, 0)
 308                 combo = g.Combo()
 309                 combo.set_popdown_strings(["text", "application", "image", "audio",
 310                                            "video", "message", "model"])
 311                 hbox.pack_start(combo, True, True, 0)
 312
 313                 hbox = g.HBox(False, 4)
 314                 vbox.pack_start(hbox, False, True, 0)
 315                 label = g.Label("Subtype:")
 316                 hbox.pack_start(label, False, True, 0)
 317                 entry = g.Entry()
 318                 entry.set_text('x-my-type')
 319                 hbox.pack_start(entry, True, True, 0)
 320                 entry.set_activates_default(True)
 321
 322                 label = g.Label("Note: the 'text' group should only be used for types that can be "
 323                                 "viewed in a normal text editor. For example, HTML is text/html, "
 324                                 "but Word documents are in the 'application' group.\n"
 325                                 "Unoffical types should start with 'x-'.")
 326                 label.set_line_wrap(True)
 327                 vbox.pack_start(label, False, True, 0)
 328
 329                 self.vbox.show_all()
 330
 331                 def response(w, resp):
 332                         if resp == g.RESPONSE_OK:
 333                                 type_name = combo.entry.get_text() + '/' + entry.get_text()
 334                                 if type_name.count('/') != 1 or type_name.count(' '):
 335                                         rox.alert("Invalid MIME type name '%s'" % type_name)
 336                                         return
 337                                 if type_name in type.types:
 338                                         rox.alert("Type '%s' already exists!" % type_name)
 339                                         import __main__
 340                                         __main__.box.show_type(type_name)
 341                                         return
 342                                 type.add_type(type_name)
 343                         self.destroy()
 344                 self.connect('response', response)