lib/python/Components/GUIComponent.py

   1 import skin
   2
   3 from enigma import ePoint
   4
   5 class GUIComponent(object):
   6         """ GUI component """
   7
   8         def __init__(self):
   9                 self.instance = None
  10                 self.visible = 1
  11                 self.skinAttributes = None
  12
  13         def execBegin(self):
  14                 pass
  15
  16         def execEnd(self):
  17                 pass
  18
  19         def onShow(self):
  20                 pass
  21
  22         def onHide(self):
  23                 pass
  24
  25         def destroy(self):
  26                 self.__dict__.clear()
  27
  28         # this works only with normal widgets - if you don't have self.instance, override this.
  29         def applySkin(self, desktop):
  30                 if not self.visible:
  31                         self.instance.hide()
  32
  33                 if self.skinAttributes is None:
  34                         print "warning, skin is missing some elements."
  35                         return
  36
  37                 skin.applyAllAttributes(self.instance, desktop, self.skinAttributes)
  38
  39         def move(self, x, y):
  40                 self.instance.move(ePoint(int(x), int(y)))
  41
  42         def show(self):
  43                 self.__visible = 1
  44                 if self.instance is not None:
  45                         self.instance.show()
  46
  47         def hide(self):
  48                 self.__visible = 0
  49                 if self.instance is not None:
  50                         self.instance.hide()
  51
  52         def getVisible(self):
  53                 return self.__visible
  54
  55         def setVisible(self, visible):
  56                 if visible:
  57                         self.show()
  58                 else:
  59                         self.hide()
  60
  61         visible = property(getVisible, setVisible)
  62
  63         def setPosition(self, x, y):
  64                 self.instance.move(ePoint(int(x), int(y)))
  65
  66         def getPosition(self):
  67                 p = self.instance.position()
  68                 return (p.x(), p.y())
  69
  70         position = property(getPosition, setPosition)
  71
  72         # default implementation for only one widget per component
  73         # feel free to override!
  74         def GUIcreate(self, parent):
  75                 self.instance = self.createWidget(parent)
  76                 self.postWidgetCreate(self.instance)
  77
  78         def GUIdelete(self):
  79                 self.preWidgetRemove(self.instance)
  80                 self.instance = None
  81
  82         # default for argumentless widget constructor
  83         def createWidget(self, parent):
  84                 return self.GUI_WIDGET(parent)
  85
  86         def postWidgetCreate(self, instance):
  87                 pass
  88
  89         def preWidgetRemove(self, instance):
  90                 pass