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Viewing changes to GTG/gtk/backends_dialog/backendstree.py

  • Committer: Izidor Matušov
  • Date: 2012-12-14 13:53:48 UTC
  • mfrom: (1240.1.17 trunk)
  • Revision ID: izidor.matusov@gmail.com-20121214135348-q7wn21y464xb1q2x
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GTG/gtk/backends_dialog/backendstree.py
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from GTG.backends.backendsignals import BackendSignals
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class BackendsTree(Gtk.TreeView):
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    '''
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    Gtk.TreeView that shows the currently loaded backends.
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        @param backends_dialog: a reference to the dialog in which this is
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        loaded
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        '''
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        super(BackendsTree,self).__init__()
 
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        super(BackendsTree, self).__init__()
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        self.dialog = backendsdialog
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        self.req = backendsdialog.get_requester()
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        self._init_liststore()
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        # 1, put default backend on top
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        # 2, sort backends by human name
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        backends = list(self.req.get_all_backends(disabled = True))
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        backends = sorted(backends, key=lambda backend:(not backend.is_default(), backend.get_human_name()))
 
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        backends = sorted(backends,
 
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                      key=lambda backend: (not backend.is_default(),
 
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                                          backend.get_human_name()))
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        for backend in backends:
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            self.add_backend(backend)
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        @param backend_id: the id of the backend to add
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        '''
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        if backend:
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            backend_iter = self.liststore.append([ \
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                backend.get_id(), \
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                self.dialog.get_pixbuf_from_icon_name(backend.get_name(), \
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                                                      16), \
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                backend.get_human_name(), \
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                self._get_markup_for_tags(backend.get_attached_tags()), \
 
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            backend_iter = self.liststore.append([
 
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                backend.get_id(),
 
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                self.dialog.get_pixbuf_from_icon_name(backend.get_name(),
 
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                                                      16),
 
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                backend.get_human_name(),
 
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                self._get_markup_for_tags(backend.get_attached_tags()),
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                ])
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            self.backendid_to_iter[backend.get_id()] = backend_iter
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    def on_backend_state_changed(self, sender, backend_id):
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        '''
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        Signal callback executed when a backend is enabled/disabled.
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            self.liststore[b_path][self.COLUMN_TAGS] = new_tags
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    def _get_markup_for_tags(self, tag_names):
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        '''Given a list of tags names, generates the pango markup to render that
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        list with the tag colors used in GTG
 
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        '''Given a list of tags names, generates the pango markup to render
 
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         that list with the tag colors used in GTG
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        @param tag_names: the list of the tags (strings)
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        @return str: the pango markup string
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            tags_txt = get_colored_tags_markup(self.req, tag_names)
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        return "<small>" + tags_txt + "</small>"
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    def remove_backend(self, backend_id):
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        ''' Removes a backend from the treeview, and selects the first (to show
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        something in the configuration panel
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                                    c in [" ", "-", "_"]))
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        selected_iter = self.liststore.get_iter(path)
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        # update the backend name
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        backend_id = self.liststore.get_value(selected_iter, \
 
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        backend_id = self.liststore.get_value(selected_iter,
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                                              self.COLUMN_BACKEND_ID)
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        backend = self.dialog.get_requester().get_backend(backend_id)
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        if backend:
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        '''
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        Helper function to get the selected path
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        @return Gtk.TreePath : returns exactly one path for the selected object or
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                               None
 
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        @return Gtk.TreePath : returns exactly one path for the selected object
 
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                               or None
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        '''
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        selection = self.get_selection()
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        if selection: