X-Git-Url: https://git.cweiske.de/enigma2.git/blobdiff_plain/fd07ec4a3d617bb1ee1f7ebdf6791014586efd84..d186d7e6752018badb476ab0d4b87aa9dcea8aac:/lib/python/Components/GUIComponent.py

diff --git a/lib/python/Components/GUIComponent.py b/lib/python/Components/GUIComponent.py
index b84cf8c2..deb8b34a 100644
--- a/lib/python/Components/GUIComponent.py
+++ b/lib/python/Components/GUIComponent.py
@@ -2,11 +2,15 @@ import skin
 
 from enigma import ePoint
 
-class GUIComponent:
+class GUIComponent(object):
 	""" GUI component """
 	
 	def __init__(self):
-		pass
+		self.instance = None
+		self.onVisibilityChange = [ ]
+		self.__visible = 0
+		self.visible = 1
+		self.skinAttributes = None
 	
 	def execBegin(self):
 		pass
@@ -14,9 +18,93 @@ class GUIComponent:
 	def execEnd(self):
 		pass
 	
+	def onShow(self):
+		pass
+
+	def onHide(self):
+		pass
+	
+	def destroy(self):
+		self.__dict__.clear()
+	
 	# this works only with normal widgets - if you don't have self.instance, override this.
 	def applySkin(self, desktop):
+		if not self.visible:
+			self.instance.hide()
+		
+		if self.skinAttributes is None:
+			return False
+
 		skin.applyAllAttributes(self.instance, desktop, self.skinAttributes)
+		return True
+
+	def move(self, x, y = None):
+		# we assume, that x is already an ePoint
+		if y is None:
+			self.instance.move(x)
+		else:
+			self.instance.move(ePoint(int(x), int(y)))
+		
+	def resize(self, size):
+		self.instance.resize(size)
+		
+	def setZPosition(self, z):
+		self.instance.setZPosition(z)
+
+	def show(self):
+		old = self.__visible
+		self.__visible = 1
+		if self.instance is not None:
+			self.instance.show()
+		if old != self.__visible:
+			for fnc in self.onVisibilityChange:
+				fnc(True)
+
+	def hide(self):
+		old = self.__visible
+		self.__visible = 0
+		if self.instance is not None:
+			self.instance.hide()
+		if old != self.__visible:
+			for fnc in self.onVisibilityChange:
+				fnc(False)
+
+	def getVisible(self):
+		return self.__visible
+	
+	def setVisible(self, visible):
+		if visible:
+			self.show()
+		else:
+			self.hide()
+
+	visible = property(getVisible, setVisible)
+
+	def setPosition(self, x, y):
+		self.instance.move(ePoint(int(x), int(y)))
 
-	def move(self, x, y):
-		self.instance.move(ePoint(int(x), int(y)))
\ No newline at end of file
+	def getPosition(self):
+		p = self.instance.position()
+		return (p.x(), p.y())
+
+	position = property(getPosition, setPosition)
+
+	# default implementation for only one widget per component
+	# feel free to override!
+	def GUIcreate(self, parent):
+		self.instance = self.createWidget(parent)
+		self.postWidgetCreate(self.instance)
+	
+	def GUIdelete(self):
+		self.preWidgetRemove(self.instance)
+		self.instance = None
+
+	# default for argumentless widget constructor
+	def createWidget(self, parent):
+		return self.GUI_WIDGET(parent)
+
+	def postWidgetCreate(self, instance):
+		pass
+	
+	def preWidgetRemove(self, instance):
+		pass