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                 self.notifier.append(i)
  39                 if self.notifierAdded:
  40                         self.notifierAdded(i)
  41
  42 class VariableText:
  43         """VariableText can be used for components which have a variable text, based on any widget with setText call"""
  44
  45         def __init__(self):
  46                 self.message = ""
  47
  48         def notifierAdded(self, notifier):
  49                 notifier.setText(self.message)
  50
  51         def setText(self, text):
  52                 if self.message != text:
  53                         self.message = text
  54                         for x in self.notifier:
  55                                 x.setText(self.message)
  56
  57         def getText(self):
  58                 return self.message
  59
  60 class VariableValue:
  61         """VariableValue can be used for components which have a variable value (like eSlider), based on any widget with setValue call"""
  62
  63         def __init__(self):
  64                 self.value = 0
  65
  66         def notifierAdded(self, notifier):
  67                 notifier.setValue(self.value)
  68
  69         def setValue(self, value):
  70                 if self.value != value:
  71                         self.value = value
  72                         for x in self.notifier:
  73                                 x.setValue(self.value)
  74
  75         def getValue(self):
  76                 return self.value
  77
  78 # now some "real" components:
  79
  80 class Clock(HTMLComponent, GUIComponent, VariableText):
  81         def __init__(self):
  82                 VariableText.__init__(self)
  83                 GUIComponent.__init__(self)
  84                 self.doClock()
  85
  86 # "funktionalitaet"
  87         def doClock(self):
  88                 self.setText("clock: " + time.asctime())
  89
  90 # realisierung als GUI
  91         def GUIcreateInstance(self, priv, parent, skindata):
  92                 g = eLabel(parent)
  93                 return g
  94
  95 # ...und als HTML:
  96         def produceHTML(self):
  97                 return self.getText()
  98
  99 class Button(HTMLComponent, GUIComponent, VariableText):
 100         onClick = {}
 101
 102         def __init__(self, text=""):
 103                 GUIComponent.__init__(self)
 104                 VariableText.__init__(self)
 105                 self.setText(text)
 106
 107         def click(self):
 108                 for x in self.onClick:
 109                         x()
 110
 111 # html:
 112         def produceHTML(self):
 113                 return "<input type=\"submit\" text=\"" + self.getText() + "\">\n"
 114
 115 # GUI:
 116         def GUIcreateInstance(self, priv, parent, skindata):
 117                 g = eButton(parent)
 118 #               g.clicked = [ self.click ]
 119                 return g
 120
 121 class Header(HTMLComponent, GUIComponent, VariableText):
 122
 123         def __init__(self, message):
 124                 GUIComponent.__init__(self)
 125                 VariableText.__init__(self)
 126                 self.setText(message)
 127
 128         def produceHTML(self):
 129                 return "<h2>" + self.getText() + "</h2>\n"
 130
 131         def GUIcreateInstance(self, priv, parent, skindata):
 132                 g = eLabel(parent)
 133                 g.setText(self.message)
 134                 return g
 135
 136 class VolumeBar(HTMLComponent, GUIComponent, VariableValue):
 137
 138         def __init__(self):
 139                 GUIComponent.__init__(self)
 140                 VariableValue.__init__(self)
 141
 142         def GUIcreateInstance(self, priv, parent, skindata):
 143                 g = eSlider(parent)
 144                 g.setRange(0, 100)
 145                 return g
 146