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         super(ListView, self).__init__()
 109
 110     def set_title(self, title):
 111         self.title = title
 112
 113     def change_entry(self):
 114         pass
 115
 116     def run(self):
 117         self.adjustment = None
 118         appuifw.app.screen=COMMON_CONFIG['screen'].encode('utf-8')
 119         save_gui(self)
 120         appuifw.app.title=self.title
 121         appuifw.app.body=self.view
 122         appuifw.app.exit_key_handler=self.exit
 123         try:
 124             self.lock.wait()
 125             while not self.exit_flag:
 126                 self.refresh()
 127                 self.lock.wait()
 128         except:
 129             pass
 130         restore_gui(self)
 131     def exit(self):
 132         self.exit_flag = True
 133         self.lock.signal()
 134
 135     def update(self,subject=None):
 136         #logger.log(u'Updated %s'%repr(self))
 137         if self.lock:
 138             self.lock.signal()
 139         #pass
 140
 141     def index_changed(self,adjustment=None):
 142         if adjustment:
 143             index = self.selected_index() + adjustment
 144         else:
 145             index = self.selected_index()
 146         if index < 0:
 147             index = len(self.widgets) - 1
 148         if index >= len(self.widgets):
 149             index = 0
 150         self.set_bindings_for_selection(index)
 151
 152     def refresh(self):
 153         appuifw.app.menu=self.get_menu_entries()
 154
 155     def set_index(self,index):
 156         if index > len(self.widgets):
 157             index = len(self.widgets)
 158         if index < 0:
 159             index = 0
 160         self.view.set_list(self.items(),index)
 161
 162     def selected_index(self):
 163         return self.view.current()
 164
 165
 166 class WidgetBasedListView(ListView):
 167     def __init__(self):
 168         self.widgets = self.generate_widgets()
 169         super(WidgetBasedListView,self).__init__()
 170         self.exit_flag = False
 171
 172     def run(self):
 173         self.refresh()
 174         self.set_bindings_for_selection(0)
 175         ListView.run(self)
 176
 177     def notify(self,object,attribute,new=None,old=None):
 178         self.refresh()
 179     def refresh(self):
 180         self.widgets = self.generate_widgets()
 181         self.redisplay_widgets()
 182         super(WidgetBasedListView,self).refresh()
 183     def redisplay_widgets(self):
 184         self.set_index(self.selected_index())
 185     def items(self):
 186         return self.all_widget_texts()
 187     def all_widget_texts(self):
 188         return [entry.list_repr() for entry in self.widgets]
 189
 190
 191
 192     def current_widget(self):
 193         return self.widgets[self.selected_index()]
 194
 195
 196 class KeyBindingView(object):
 197
 198     def __init__(self):
 199         self.binding_map = {}
 200         super(KeyBindingView,self).__init__()
 201
 202     def set_keybindings(self, binding_map):
 203         """
 204         Set a new map of key bindings. This map maps method names to a
 205         tuple of keyname and description.
 206
 207         The method name refers to a method on the selected item, or the
 208         current view.
 209
 210         Example: { 'search_item' : ('0', 'Search item') }
 211
 212         """
 213         self.binding_map = binding_map
 214
 215     def get_menu_entries(self):
 216         menu_entries=[]
 217         for key,key_name,description,function in self.key_and_menu_bindings(self.selected_index()):
 218             if description != '':
 219                 if key:
 220                     if key_name == 'Backspace': key_name='C'
 221                     description='[%s] '%key_name +description
 222                 else:
 223                     description='    '+description
 224                 menu_entries.append((description,function))
 225         menu_entries.append((u'Exit', self.exit))
 226         return menu_entries
 227     def set_bindings_for_selection(self,selected_index):
 228         self.remove_all_key_bindings()
 229
 230         for key,key_name,description,function in self.key_and_menu_bindings(selected_index):
 231             if key:
 232                 self.view.bind(key,function)
 233         self.view.bind(EKeyUpArrow,lambda: self.index_changed(-1))
 234         self.view.bind(EKeyDownArrow,lambda: self.index_changed(1))
 235
 236     def remove_all_key_bindings(self):
 237         for key in all_key_values():
 238             self.view.bind(key,no_action)
 239
 240 class SearchableListView(WidgetBasedListView):
 241     def __init__(self):
 242         self.current_entry_filter_index = -1
 243         self.entry_filters = []
 244         self.filtered_list = lambda:[]
 245         self.lock = None
 246         super(SearchableListView,self).__init__()
 247
 248     def set_filters(self, entry_filters):
 249         """
 250         Set the filters that could be applied to this list. Each filter
 251         can be applied in turn by calling switch_entry_filter (for
 252         example from a key binding).
 253
 254         The entry_filters argument should be a list of filters. The
 255         active filter is stored into self.filtered_list and should be
 256         processed by generate_widgets in the subclass.
 257         """
 258         self.current_entry_filter_index = 0
 259         self.entry_filters = entry_filters
 260         self.filtered_list = self.entry_filters[0]
 261
 262     def search_item(self):
 263         selected_item = appuifw.selection_list(self.all_widget_texts(),search_field=1)
 264         if selected_item == None or selected_item == -1:
 265             selected_item = self.selected_index()
 266         self.view.set_list(self.items(),selected_item)
 267         self.set_bindings_for_selection(selected_item)
 268
 269     def switch_entry_filter(self):
 270         self.current_entry_filter_index += 1
 271         self.filtered_list = self.entry_filters[self.current_entry_filter_index % len(self.entry_filters)]
 272         self.refresh()
 273
 274
 275 class EditableListView(SearchableListView,KeyBindingView):
 276     def __init__(self):
 277         super(EditableListView, self).__init__()
 278
 279     def key_and_menu_bindings(self,selected_index):
 280         key_and_menu_bindings=[]
 281         for function in applicable_functions(self.widgets[selected_index],self.binding_map)+\
 282             applicable_functions(self,self.binding_map):
 283             execute_and_update_function = self.execute_and_update(function)
 284             (key,description) = self.binding_map[function.__name__]
 285             key_and_menu_bindings.append((get_key(key),key,description,execute_and_update_function))
 286         return key_and_menu_bindings
 287
 288     def change_entry(self):
 289         self.current_widget().change()
 290         self.refresh()
 291     def execute_and_update(self,function):
 292         return lambda: (function(),self.refresh(),self.index_changed())
 293
 294     def notify(self,item,attribute,new=None,old=None):
 295         self.refresh()
 296
 297 #class DisplayableFunction:
 298 #    def __init__(self,display_name,function):
 299 #        self.display_name = display_name
 300 #        self.function = function
 301 #    def list_repr(self):
 302 #        return self.display_name
 303 #    def execute(self):
 304 #        function()
 305
 306 # Public API
 307 __all__= ('EditableListView','show_config')