components.py

   1 from enigma import *
   2 import time
   3
   4 # some helper classes first:
   5 class HTMLComponent:
   6         def produceHTML(self):
   7                 return ""
   8
   9 class HTMLSkin:
  10         order = ()
  11
  12         def __init__(self, order):
  13                 self.order = order
  14
  15         def produceHTML(self):
  16                 res = "<html>\n"
  17                 for name in self.order:
  18                         res += self[name].produceHTML()
  19                 res += "</html>\n";
  20                 return res
  21
  22 class GUISkin:
  23         data = { }
  24         def createGUIScreen(self, parent):
  25                 for (name, val) in self.items():
  26                         self.data[name] = { }
  27                         val.GUIcreate(self.data[name], parent, None)
  28
  29 class GUIComponent:
  30         """ GUI component """
  31
  32         def __init__(self):
  33                 self.notifier = [ ]
  34
  35         def GUIcreate(self, priv, parent, skindata):
  36                 i = self.GUIcreateInstance(self, parent, skindata)
  37                 priv["instance"] = i
  38                 print str(self) + " notifier list before " + str(self.notifier)
  39                 self.notifier.append(i)
  40                 print str(self) + " notifier list now " + str(self.notifier)
  41                 if self.notifierAdded:
  42                         self.notifierAdded(i)
  43
  44 class VariableText:
  45         """VariableText can be used for components which have a variable text, based on any widget with setText call"""
  46
  47         def __init__(self):
  48                 self.message = ""
  49
  50         def notifierAdded(self, notifier):
  51                 notifier.setText(self.message)
  52
  53         def setText(self, text):
  54                 if self.message != text:
  55                         self.message = text
  56                         print self.notifier
  57                         for x in self.notifier:
  58                                 x.setText(self.message)
  59
  60         def getText(self):
  61                 return self.message
  62
  63 class VariableValue:
  64         """VariableValue can be used for components which have a variable value (like eSlider), based on any widget with setValue call"""
  65
  66         def __init__(self):
  67                 self.value = 0
  68
  69         def notifierAdded(self, notifier):
  70                 notifier.setValue(self.value)
  71
  72         def setValue(self, value):
  73                 if self.value != value:
  74                         self.value = value
  75                         for x in self.notifier:
  76                                 x.setValue(self.value)
  77
  78         def getValue(self):
  79                 return self.value
  80
  81 # now some "real" components:
  82
  83 class Clock(HTMLComponent, GUIComponent, VariableText):
  84         def __init__(self):
  85                 VariableText.__init__(self)
  86                 GUIComponent.__init__(self)
  87                 self.doClock()
  88
  89 # "funktionalitaet"
  90         def doClock(self):
  91                 self.setText("clock: " + time.asctime())
  92
  93 # realisierung als GUI
  94         def GUIcreateInstance(self, priv, parent, skindata):
  95                 g = eLabel(parent)
  96                 return g
  97
  98 # ...und als HTML:
  99         def produceHTML(self):
 100                 return self.getText()
 101
 102 class Button(HTMLComponent, GUIComponent, VariableText):
 103         onClick = {}
 104
 105         def __init__(self, text=""):
 106                 GUIComponent.__init__(self)
 107                 VariableText.__init__(self)
 108                 self.setText(text)
 109
 110         def click(self):
 111                 for x in self.onClick:
 112                         x()
 113
 114 # html:
 115         def produceHTML(self):
 116                 return "<input type=\"submit\" text=\"" + self.getText() + "\">\n"
 117
 118 # GUI:
 119         def GUIcreateInstance(self, priv, parent, skindata):
 120                 g = eButton(parent)
 121 #               g.clicked = [ self.click ]
 122                 return g
 123
 124 class Header(HTMLComponent, GUIComponent, VariableText):
 125
 126         def __init__(self, message):
 127                 GUIComponent.__init__(self)
 128                 VariableText.__init__(self)
 129                 self.setText(message)
 130
 131         def produceHTML(self):
 132                 return "<h2>" + self.getText() + "</h2>\n"
 133
 134         def GUIcreateInstance(self, priv, parent, skindata):
 135                 g = eLabel(parent)
 136                 g.setText(self.message)
 137                 return g
 138
 139 class VolumeBar(HTMLComponent, GUIComponent, VariableValue):
 140
 141         def __init__(self):
 142                 GUIComponent.__init__(self)
 143                 VariableValue.__init__(self)
 144
 145         def GUIcreateInstance(self, priv, parent, skindata):
 146                 g = eSlider(parent)
 147                 g.setRange(0, 100)
 148                 return g
 149