zeroinstall/gtkui/applistbox.py

   1 """A GTK dialog which displays a list of Zero Install applications in the menu."""
   2 # Copyright (C) 2009, Thomas Leonard
   3 # See the README file for details, or visit http://0install.net.
   4
   5 from zeroinstall import _
   6 import os
   7 import gtk, gobject, pango
   8 import subprocess
   9
  10 from zeroinstall import support
  11 from zeroinstall.gtkui import icon, xdgutils
  12 from zeroinstall.injector import policy, reader, model, namespaces
  13
  14 def _pango_escape(s):
  15         return s.replace('&', '&amp;').replace('<', '&lt;')
  16
  17 class AppList:
  18         """A list of applications which can be displayed in an L{AppListBox}.
  19         For example, a program might implement this to display a list of plugins.
  20         This default implementation lists applications in the freedesktop.org menus.
  21         """
  22         def get_apps(self):
  23                 """Return a list of application URIs."""
  24                 self.apps = xdgutils.discover_existing_apps()
  25                 return self.apps.keys()
  26
  27         def remove_app(self, uri):
  28                 """Remove this application from the list."""
  29                 path = self.apps[uri]
  30                 os.unlink(path)
  31
  32 _tooltips = {
  33         0: _("Run the application"),
  34         1: _("Show documentation files"),
  35         2: _("Upgrade or change versions"),
  36         3: _("Remove launcher from the menu"),
  37 }
  38
  39 class AppListBox:
  40         """A dialog box which lists applications already added to the menus."""
  41         ICON, URI, NAME, MARKUP = range(4)
  42
  43         def __init__(self, iface_cache, app_list):
  44                 """Constructor.
  45                 @param iface_cache: used to find extra information about programs
  46                 @type iface_cache: L{zeroinstall.injector.iface_cache.IfaceCache}
  47                 @param app_list: used to list or remove applications
  48                 @type app_list: L{AppList}
  49                 """
  50                 builderfile = os.path.join(os.path.dirname(__file__), 'desktop.ui')
  51                 self.iface_cache = iface_cache
  52                 self.app_list = app_list
  53
  54                 builder = gtk.Builder()
  55                 builder.set_translation_domain('zero-install')
  56                 builder.add_from_file(builderfile)
  57                 self.window = builder.get_object('applist')
  58                 tv = builder.get_object('treeview')
  59
  60                 self.model = gtk.ListStore(gtk.gdk.Pixbuf, str, str, str)
  61
  62                 self.populate_model()
  63                 tv.set_model(self.model)
  64                 tv.get_selection().set_mode(gtk.SELECTION_NONE)
  65
  66                 cell_icon = gtk.CellRendererPixbuf()
  67                 cell_icon.set_property('xpad', 4)
  68                 cell_icon.set_property('ypad', 4)
  69                 column = gtk.TreeViewColumn('Icon', cell_icon, pixbuf = AppListBox.ICON)
  70                 tv.append_column(column)
  71
  72                 cell_text = gtk.CellRendererText()
  73                 cell_text.set_property('ellipsize', pango.ELLIPSIZE_END)
  74                 column = gtk.TreeViewColumn('Name', cell_text, markup = AppListBox.MARKUP)
  75                 column.set_expand(True)
  76                 tv.append_column(column)
  77
  78                 cell_actions = ActionsRenderer(self, tv)
  79                 actions_column = gtk.TreeViewColumn('Actions', cell_actions, uri = AppListBox.URI)
  80                 tv.append_column(actions_column)
  81
  82                 def redraw_actions(path):
  83                         if path is not None:
  84                                 area = tv.get_cell_area(path, actions_column)
  85                                 tv.queue_draw_area(*area)
  86
  87                 tv.set_property('has-tooltip', True)
  88                 def query_tooltip(widget, x, y, keyboard_mode, tooltip):
  89                         x, y = tv.convert_widget_to_bin_window_coords(x, y)
  90                         pos = tv.get_path_at_pos(x, y)
  91                         if pos:
  92                                 new_hover = (None, None, None)
  93                                 path, col, x, y = pos
  94                                 if col == actions_column:
  95                                         area = tv.get_cell_area(path, col)
  96                                         iface = self.model[path][AppListBox.URI]
  97                                         action = cell_actions.get_action(area, x, y)
  98                                         if action is not None:
  99                                                 new_hover = (path, iface, action)
 100                                 if new_hover != cell_actions.hover:
 101                                         redraw_actions(cell_actions.hover[0])
 102                                         cell_actions.hover = new_hover
 103                                         redraw_actions(cell_actions.hover[0])
 104                                 tv.set_tooltip_cell(tooltip, pos[0], pos[1], None)
 105
 106                                 if new_hover[2] is not None:
 107                                         tooltip.set_text(_tooltips[cell_actions.hover[2]])
 108                                         return True
 109                         return False
 110                 tv.connect('query-tooltip', query_tooltip)
 111
 112                 def leave(widget, lev):
 113                         redraw_actions(cell_actions.hover[0])
 114                         cell_actions.hover = (None, None, None)
 115
 116                 tv.connect('leave-notify-event', leave)
 117
 118                 self.model.set_sort_column_id(AppListBox.NAME, gtk.SORT_ASCENDING)
 119
 120                 show_cache = builder.get_object('show_cache')
 121                 self.window.action_area.set_child_secondary(show_cache, True)
 122
 123                 def response(box, resp):
 124                         if resp == 0:
 125                                 subprocess.Popen(['0store', 'manage'])
 126                         else:
 127                                 box.destroy()
 128                 self.window.connect('response', response)
 129
 130         def populate_model(self):
 131                 m = self.model
 132                 m.clear()
 133
 134                 for uri in self.app_list.get_apps():
 135                         itr = m.append()
 136                         m[itr][AppListBox.URI] = uri
 137
 138                         try:
 139                                 iface = self.iface_cache.get_interface(uri)
 140                                 name = iface.get_name()
 141                                 summary = iface.summary or _('No information available')
 142                                 summary = summary[:1].capitalize() + summary[1:]
 143                                 icon_width, icon_height = gtk.icon_size_lookup(gtk.ICON_SIZE_DIALOG)
 144                                 pixbuf = icon.load_icon(self.iface_cache.get_icon_path(iface), icon_width, icon_height)
 145                         except model.InvalidInterface, ex:
 146                                 name = uri
 147                                 summary = unicode(ex)
 148                                 pixbuf = None
 149
 150                         m[itr][AppListBox.NAME] = name
 151                         if pixbuf is None:
 152                                 pixbuf = self.window.render_icon(gtk.STOCK_EXECUTE, gtk.ICON_SIZE_DIALOG)
 153                         m[itr][AppListBox.ICON] = pixbuf
 154
 155                         m[itr][AppListBox.MARKUP] = '<b>%s</b>\n<i>%s</i>' % (_pango_escape(name), _pango_escape(summary))
 156
 157         def action_run(self, uri):
 158                 iface = self.iface_cache.get_interface(uri)
 159                 reader.update_from_cache(iface)
 160                 if len(iface.get_metadata(namespaces.XMLNS_IFACE, 'needs-terminal')):
 161                         for terminal in ['xterm', 'gnome-terminal', 'rxvt', 'konsole']:
 162                                 exe = support.find_in_path(terminal)
 163                                 if exe:
 164                                         if terminal == 'gnome-terminal':
 165                                                 flag = '-x'
 166                                         else:
 167                                                 flag = '-e'
 168                                         subprocess.Popen([terminal, flag, '0launch', '--', uri])
 169                                         break
 170                         else:
 171                                 box = gtk.MessageDialog(self.window, gtk.DIALOG_MODAL, gtk.MESSAGE_ERROR, gtk.BUTTONS_OK, _("Can't find a suitable terminal emulator"))
 172                                 box.run()
 173                                 box.destroy()
 174                 else:
 175                         subprocess.Popen(['0launch', '--', uri])
 176
 177         def action_help(self, uri):
 178                 p = policy.Policy(uri)
 179                 policy.network_use = model.network_offline
 180                 if p.need_download():
 181                         child = subprocess.Popen(['0launch', '-d', '--', uri])
 182                         child.wait()
 183                         if child.returncode:
 184                                 return
 185                 iface = self.iface_cache.get_interface(uri)
 186                 reader.update_from_cache(iface)
 187                 p.solve_with_downloads()
 188                 impl = p.solver.selections[iface]
 189                 assert impl, "Failed to choose an implementation of %s" % uri
 190                 help_dir = impl.metadata.get('doc-dir')
 191                 path = p.get_implementation_path(impl)
 192                 assert path, "Chosen implementation is not cached!"
 193                 if help_dir:
 194                         path = os.path.join(path, help_dir)
 195                 else:
 196                         main = impl.main
 197                         if main:
 198                                 # Hack for ROX applications. They should be updated to
 199                                 # set doc-dir.
 200                                 help_dir = os.path.join(path, os.path.dirname(main), 'Help')
 201                                 if os.path.isdir(help_dir):
 202                                         path = help_dir
 203
 204                 # xdg-open has no "safe" mode, so check we're not "opening" an application.
 205                 if os.path.exists(os.path.join(path, 'AppRun')):
 206                         raise Exception(_("Documentation directory '%s' is an AppDir; refusing to open") % path)
 207
 208                 subprocess.Popen(['xdg-open', path])
 209
 210         def action_properties(self, uri):
 211                 subprocess.Popen(['0launch', '--gui', '--', uri])
 212
 213         def action_remove(self, uri):
 214                 try:
 215                         name = self.iface_cache.get_interface(uri).get_name()
 216                 except model.InvalidInterface:
 217                         name = uri
 218
 219                 box = gtk.MessageDialog(self.window, gtk.DIALOG_MODAL, gtk.MESSAGE_QUESTION, gtk.BUTTONS_CANCEL, "")
 220                 box.set_markup(_("Remove <b>%s</b> from the menu?") % _pango_escape(name))
 221                 box.add_button(gtk.STOCK_DELETE, gtk.RESPONSE_OK)
 222                 box.set_default_response(gtk.RESPONSE_OK)
 223                 resp = box.run()
 224                 box.destroy()
 225                 if resp == gtk.RESPONSE_OK:
 226                         try:
 227                                 self.app_list.remove_app(uri)
 228                         except Exception, ex:
 229                                 box = gtk.MessageDialog(self.window, gtk.DIALOG_MODAL, gtk.MESSAGE_ERROR, gtk.BUTTONS_OK, _("Failed to remove %(interface_name)s: %(exception)s") % {'interface_name': name, 'exception': ex})
 230                                 box.run()
 231                                 box.destroy()
 232                         self.populate_model()
 233
 234 class ActionsRenderer(gtk.GenericCellRenderer):
 235         __gproperties__ = {
 236                 "uri": (gobject.TYPE_STRING, "Text", "Text", "-", gobject.PARAM_READWRITE),
 237         }
 238
 239         def __init__(self, applist, widget):
 240                 "@param widget: widget used for style information"
 241                 gtk.GenericCellRenderer.__init__(self)
 242                 self.set_property('mode', gtk.CELL_RENDERER_MODE_ACTIVATABLE)
 243                 self.padding = 4
 244
 245                 self.applist = applist
 246
 247                 self.size = 10
 248                 def stock_lookup(name):
 249                         pixbuf = widget.render_icon(name, gtk.ICON_SIZE_BUTTON)
 250                         self.size = max(self.size, pixbuf.get_width(), pixbuf.get_height())
 251                         return pixbuf
 252
 253                 if hasattr(gtk, 'STOCK_MEDIA_PLAY'):
 254                         self.run = stock_lookup(gtk.STOCK_MEDIA_PLAY)
 255                 else:
 256                         self.run = stock_lookup(gtk.STOCK_YES)
 257                 self.help = stock_lookup(gtk.STOCK_HELP)
 258                 self.properties = stock_lookup(gtk.STOCK_PROPERTIES)
 259                 self.remove = stock_lookup(gtk.STOCK_DELETE)
 260                 self.hover = (None, None, None) # Path, URI, action
 261
 262         def do_set_property(self, prop, value):
 263                 setattr(self, prop.name, value)
 264
 265         def on_get_size(self, widget, cell_area, layout = None):
 266                 total_size = self.size * 2 + self.padding * 4
 267                 return (0, 0, total_size, total_size)
 268
 269         def on_render(self, window, widget, background_area, cell_area, expose_area, flags):
 270                 hovering = self.uri == self.hover[1]
 271
 272                 s = self.size
 273
 274                 cx = cell_area.x + self.padding
 275                 cy = cell_area.y + (cell_area.height / 2) - s - self.padding
 276
 277                 ss = s + self.padding * 2
 278
 279                 b = 0
 280                 for (x, y), icon in [((0, 0), self.run),
 281                              ((ss, 0), self.help),
 282                              ((0, ss), self.properties),
 283                              ((ss, ss), self.remove)]:
 284                         if hovering and b == self.hover[2]:
 285                                 widget.style.paint_box(window, gtk.STATE_NORMAL, gtk.SHADOW_OUT,
 286                                                 expose_area, widget, None,
 287                                                 cx + x - 2, cy + y - 2, s + 4, s + 4)
 288
 289                         window.draw_pixbuf(widget.style.white_gc, icon,
 290                                                 0, 0,           # Source x,y
 291                                                 cx + x, cy + y)
 292                         b += 1
 293
 294         def on_activate(self, event, widget, path, background_area, cell_area, flags):
 295                 if event.type != gtk.gdk.BUTTON_PRESS:
 296                         return False
 297                 action = self.get_action(cell_area, event.x - cell_area.x, event.y - cell_area.y)
 298                 if action == 0:
 299                         self.applist.action_run(self.uri)
 300                 elif action == 1:
 301                         self.applist.action_help(self.uri)
 302                 elif action == 2:
 303                         self.applist.action_properties(self.uri)
 304                 elif action == 3:
 305                         self.applist.action_remove(self.uri)
 306
 307         def get_action(self, area, x, y):
 308                 lower = int(y > (area.height / 2)) * 2
 309
 310                 s = self.size + self.padding * 2
 311                 if x > s * 2:
 312                         return None
 313                 return int(x > s) + lower