lib/python/Components/GUIComponent.py

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