src/gui/gui.py

   1 from config.config import *
   2 from model.projects import Projects
   3
   4 import appuifw
   5 import thread
   6 from log.logging import logger
   7 from e32 import Ao_lock, in_emulator
   8 from key_codes import *
   9 import key_codes
  10
  11
  12 def show_config(cfg):
  13     fields = []
  14     for k, v in cfg.items():
  15         v = cfg.format_value(v)
  16         if isinstance(v, int) or isinstance(v, long):
  17             tname = 'number'
  18             v = int(v)
  19         elif isinstance(v, list) or isinstance(v, tuple):
  20             for item in v[0]:
  21                 if not isinstance(item, unicode):
  22                     raise Exception("list can contain only unicode objects, "\
  23                                     "object %r is not supported" % item)
  24
  25             tname = 'combo'
  26         elif isinstance(v, unicode):
  27             tname = 'text'
  28         else:
  29             raise Exception("%s has non-supported value" % k)
  30
  31         fields.append((unicode(k), tname, v))
  32
  33
  34     form = appuifw.Form(fields=fields, flags=appuifw.FFormEditModeOnly | \
  35                         appuifw.FFormDoubleSpaced)
  36
  37     saved = [False]
  38     def save_hook(param):
  39         saved[0] = True
  40     form.save_hook = save_hook
  41
  42     form.execute()
  43
  44     # return true if user saved, false otherwise
  45     if not saved[0]:
  46         return False
  47
  48     for label, tname, value in form:
  49         if tname == 'combo':
  50             value = (value[0], int(value[1]))
  51
  52         cfg[str(label)] = cfg.parse_value(value)
  53
  54     return True
  55
  56
  57 def no_action():
  58     pass
  59
  60 def applicable_functions(obj,allowed_function_names):
  61     function_names = [function_name for function_name in dir(obj) if function_name in allowed_function_names]
  62     return [eval('obj.%s'%function_name) for function_name in function_names]
  63
  64 def get_key(key_name):
  65     if key_name == '':
  66         key = None
  67     else:
  68         key=eval('EKey%s'%key_name)
  69     return key
  70
  71 def all_key_names():
  72     return filter(lambda entry:entry[0:4]=='EKey',dir(key_codes))
  73 def all_key_values():
  74     key_values=[
  75                 EKey0,
  76                 EKey1,
  77                 EKey2,
  78                 EKey3,
  79                 EKey4,
  80                 EKey5,
  81                 EKey6,
  82                 EKey7,
  83                 EKey8,
  84                 EKey9,
  85                 EKeyStar,
  86                 EKeyHash,
  87                 ]
  88     return key_values
  89
  90
  91 def save_gui(object):
  92     object.old_gui = appuifw.app.body
  93     object.old_menu = appuifw.app.menu
  94     object.old_exit_key_handler = appuifw.app.exit_key_handler
  95     object.old_title=appuifw.app.title
  96     object.lock = Ao_lock()
  97
  98 def restore_gui(object):
  99     appuifw.app.body = object.old_gui
 100     appuifw.app.menu = object.old_menu
 101     appuifw.app.exit_key_handler = object.old_exit_key_handler
 102     appuifw.app.title = object.old_title
 103
 104
 105 class ListView(object):
 106     def __init__(self):
 107         self.view = appuifw.Listbox(self.items(),self.change_entry)
 108
 109     def set_title(self, title):
 110         self.title = title
 111
 112     def change_entry(self):
 113         pass
 114
 115     def run(self):
 116         self.adjustment = None
 117         appuifw.app.screen=COMMON_CONFIG['screen'].encode('utf-8')
 118         save_gui(self)
 119         appuifw.app.title=self.title
 120         appuifw.app.body=self.view
 121         appuifw.app.exit_key_handler=self.exit
 122         try:
 123             self.lock.wait()
 124             while not self.exit_flag:
 125                 self.refresh()
 126                 self.lock.wait()
 127         except:
 128             pass
 129         restore_gui(self)
 130     def exit(self):
 131         self.exit_flag = True
 132         self.lock.signal()
 133
 134     def update(self,subject=None):
 135         #logger.log(u'Updated %s'%repr(self))
 136         if self.lock:
 137             self.lock.signal()
 138         #pass
 139
 140     def index_changed(self,adjustment=None):
 141         if adjustment:
 142             index = self.selected_index() + adjustment
 143         else:
 144             index = self.selected_index()
 145         if index < 0:
 146             index = len(self.widgets) - 1
 147         if index >= len(self.widgets):
 148             index = 0
 149         self.set_bindings_for_selection(index)
 150
 151     def refresh(self):
 152         appuifw.app.menu=self.get_menu_entries()
 153
 154     def set_index(self,index):
 155         if index > len(self.widgets):
 156             index = len(self.widgets)
 157         if index < 0:
 158             index = 0
 159         self.view.set_list(self.items(),index)
 160
 161     def selected_index(self):
 162         return self.view.current()
 163
 164
 165 class WidgetBasedListView(ListView):
 166     def __init__(self):
 167         self.widgets = self.generate_widgets()
 168         super(WidgetBasedListView,self).__init__()
 169         self.exit_flag = False
 170
 171     def run(self):
 172         self.refresh()
 173         self.set_bindings_for_selection(0)
 174         ListView.run(self)
 175
 176     def notify(self,object,attribute,new=None,old=None):
 177         self.refresh()
 178     def refresh(self):
 179         self.widgets = self.generate_widgets()
 180         self.redisplay_widgets()
 181         super(WidgetBasedListView,self).refresh()
 182     def redisplay_widgets(self):
 183         self.set_index(self.selected_index())
 184     def items(self):
 185         return self.all_widget_texts()
 186     def all_widget_texts(self):
 187         return [entry.list_repr() for entry in self.widgets]
 188
 189
 190
 191     def current_widget(self):
 192         return self.widgets[self.selected_index()]
 193
 194
 195 class KeyBindingView(object):
 196
 197     def __init__(self):
 198         self.binding_map = {}
 199
 200     def set_keybindings(self, binding_map):
 201         """
 202         Set a new map of key bindings. This map maps method names to a
 203         tuple of keyname and description.
 204
 205         The method name refers to a method on the selected item, or the
 206         current view.
 207
 208         Example: { 'search_item' : ('0', 'Search item') }
 209
 210         """
 211         self.binding_map = binding_map
 212
 213     def get_menu_entries(self):
 214         menu_entries=[]
 215         for key,key_name,description,function in self.key_and_menu_bindings(self.selected_index()):
 216             if description != '':
 217                 if key:
 218                     if key_name == 'Backspace': key_name='C'
 219                     description='[%s] '%key_name +description
 220                 else:
 221                     description='    '+description
 222                 menu_entries.append((description,function))
 223         menu_entries.append((u'Exit', self.exit))
 224         return menu_entries
 225     def set_bindings_for_selection(self,selected_index):
 226         self.remove_all_key_bindings()
 227
 228         for key,key_name,description,function in self.key_and_menu_bindings(selected_index):
 229             if key:
 230                 self.view.bind(key,function)
 231         self.view.bind(EKeyUpArrow,lambda: self.index_changed(-1))
 232         self.view.bind(EKeyDownArrow,lambda: self.index_changed(1))
 233
 234     def remove_all_key_bindings(self):
 235         for key in all_key_values():
 236             self.view.bind(key,no_action)
 237
 238 class SearchableListView(WidgetBasedListView):
 239     def __init__(self):
 240         self.current_entry_filter_index = -1
 241         self.entry_filters = []
 242         self.filtered_list = lambda:[]
 243         self.lock = None
 244         super(SearchableListView,self).__init__()
 245
 246     def set_filters(self, entry_filters):
 247         """
 248         Set the filters that could be applied to this list. Each filter
 249         can be applied in turn by calling switch_entry_filter (for
 250         example from a key binding).
 251
 252         The entry_filters argument should be a list of filters. The
 253         active filter is stored into self.filtered_list and should be
 254         processed by generate_widgets in the subclass.
 255         """
 256         self.current_entry_filter_index = 0
 257         self.entry_filters = entry_filters
 258         self.filtered_list = self.entry_filters[0]
 259
 260     def search_item(self):
 261         selected_item = appuifw.selection_list(self.all_widget_texts(),search_field=1)
 262         if selected_item == None or selected_item == -1:
 263             selected_item = self.selected_index()
 264         self.view.set_list(self.items(),selected_item)
 265         self.set_bindings_for_selection(selected_item)
 266
 267     def switch_entry_filter(self):
 268         self.current_entry_filter_index += 1
 269         self.filtered_list = self.entry_filters[self.current_entry_filter_index % len(self.entry_filters)]
 270         self.refresh()
 271
 272
 273 class EditableListView(SearchableListView,KeyBindingView):
 274     def __init__(self):
 275         KeyBindingView.__init__(self)
 276         super(EditableListView, self).__init__()
 277
 278     def key_and_menu_bindings(self,selected_index):
 279         key_and_menu_bindings=[]
 280         for function in applicable_functions(self.widgets[selected_index],self.binding_map)+\
 281             applicable_functions(self,self.binding_map):
 282             execute_and_update_function = self.execute_and_update(function)
 283             (key,description) = self.binding_map[function.__name__]
 284             key_and_menu_bindings.append((get_key(key),key,description,execute_and_update_function))
 285         return key_and_menu_bindings
 286
 287     def change_entry(self):
 288         self.current_widget().change()
 289         self.refresh()
 290     def execute_and_update(self,function):
 291         return lambda: (function(),self.refresh(),self.index_changed())
 292
 293     def notify(self,item,attribute,new=None,old=None):
 294         self.refresh()
 295
 296 #class DisplayableFunction:
 297 #    def __init__(self,display_name,function):
 298 #        self.display_name = display_name
 299 #        self.function = function
 300 #    def list_repr(self):
 301 #        return self.display_name
 302 #    def execute(self):
 303 #        function()
 304
 305 # Public API
 306 __all__= ('EditableListView','show_config')