X-Git-Url: https://git.cweiske.de/enigma2.git/blobdiff_plain/47d24e1d25002485f1cb90f1682b4bc3070cad0b..436076df36a87a4ae36f9dbf342a0f280442ed41:/components.py

diff --git a/components.py b/components.py
index 315ae44c..9513516d 100644
--- a/components.py
+++ b/components.py
@@ -1,5 +1,6 @@
 from enigma import *
 import time
+import sys
 
 # some helper classes first:
 class HTMLComponent:
@@ -20,60 +21,131 @@ class HTMLSkin:
 		return res
 
 class GUISkin:
-	data = { }
+	def __init__(self):
+		pass
+	
 	def createGUIScreen(self, parent):
 		for (name, val) in self.items():
-			self.data[name] = { }
-			val.GUIcreate(self.data[name], parent, None)
+			if isinstance(val, GUIComponent):
+				val.GUIcreate(parent, None)
+	
+	def deleteGUIScreen(self):
+		for (name, val) in self.items():
+			if isinstance(val, GUIComponent):
+				val.GUIdelete()
+			try:
+				val.fix()
+			except:
+				pass
+			
+			# DIESER KOMMENTAR IST NUTZLOS UND MITTLERWEILE VERALTET! (glaub ich)
+			# BITTE NICHT LESEN!
+			# note: you'll probably run into this assert. if this happens, don't panic!
+			# yes, it's evil. I told you that programming in python is just fun, and 
+			# suddently, you have to care about things you don't even know.
+			#
+			# but calm down, the solution is easy, at least on paper:
+			#
+			# Each Component, which is a GUIComponent, owns references to each
+			# instantiated eWidget (namely in screen.data[name]["instance"], in case
+			# you care.)
+			# on deleteGUIscreen, all eWidget *must* (!) be deleted (otherwise,
+			# well, problems appear. I don't want to go into details too much,
+			# but this would be a memory leak anyway.)
+			# The assert beyond checks for that. It asserts that the corresponding
+			# eWidget is about to be removed (i.e., that the refcount becomes 0 after
+			# running deleteGUIscreen).
+			# (You might wonder why the refcount is checked for 2 and not for 1 or 0 -
+			# one reference is still hold by the local variable 'w', another one is
+			# hold be the function argument to sys.getrefcount itself. So only if it's
+			# 2 at this point, the object will be destroyed after leaving deleteGUIscreen.)
+			#
+			# Now, how to fix this problem? You're holding a reference somewhere. (References
+			# can only be hold from Python, as eWidget itself isn't related to the c++
+			# way of having refcounted objects. So it must be in python.)
+			#
+			# It could be possible that you're calling deleteGUIscreen trough a call of
+			# a PSignal. For example, you could try to call screen.doClose() in response
+			# to a Button::click. This will fail. (It wouldn't work anyway, as you would
+			# remove a dialog while running it. It never worked - enigma1 just set a 
+			# per-mainloop variable on eWidget::close() to leave the exec()...)
+			# That's why Session supports delayed closes. Just call Session.close() and
+			# it will work.
+			#
+			# Another reason is that you just stored the data["instance"] somewhere. or
+			# added it into a notifier list and didn't removed it.
+			#
+			# If you can't help yourself, just ask me. I'll be glad to help you out.
+			# Sorry for not keeping this code foolproof. I really wanted to archive
+			# that, but here I failed miserably. All I could do was to add this assert.
+#			assert sys.getrefcount(w) == 2, "too many refs hold to " + str(w)
+	
+	def close(self):
+		self.deleteGUIScreen()
 
 class GUIComponent:
 	""" GUI component """
 
 	def __init__(self):
-		self.notifier = [ ]
+		pass
+		
+	def execBegin(self):
+		pass
 	
-	def GUIcreate(self, priv, parent, skindata):
-		i = self.GUIcreateInstance(self, parent, skindata)
-		priv["instance"] = i
-		self.notifier.append(i)
-		if self.notifierAdded:
-			self.notifierAdded(i)
+	def execEnd(self):
+		pass
 
 class VariableText:
 	"""VariableText can be used for components which have a variable text, based on any widget with setText call"""
 	
 	def __init__(self):
 		self.message = ""
+		self.instance = None
 	
-	def notifierAdded(self, notifier):
-		notifier.setText(self.message)
-
 	def setText(self, text):
-		if self.message != text:
-			self.message = text
-			for x in self.notifier:
-				x.setText(self.message)
+		self.message = text
+		if self.instance:
+			self.instance.setText(self.message)
 
 	def getText(self):
 		return self.message
+	
+	def GUIcreate(self, parent, skindata):
+		self.instance = self.createWidget(parent, skindata)
+		self.instance.setText(self.message)
+	
+	def GUIdelete(self):
+		self.removeWidget(self.instance)
+		self.instance = None
+	
+	def removeWidget(self, instance):
+		pass
 
 class VariableValue:
 	"""VariableValue can be used for components which have a variable value (like eSlider), based on any widget with setValue call"""
 	
 	def __init__(self):
 		self.value = 0
+		self.instance = None
 	
-	def notifierAdded(self, notifier):
-		notifier.setValue(self.value)
-
 	def setValue(self, value):
-		if self.value != value:
-			self.value = value
-			for x in self.notifier:
-				x.setValue(self.value)
+		self.value = value
+		if self.instance:
+			self.instance.setValue(self.value)
 
 	def getValue(self):
 		return self.value
+		
+	def GUIcreate(self, parent, skindata):
+		self.instance = self.createWidget(parent, skindata)
+		self.instance.setValue(self.value)
+	
+	def GUIdelete(self):
+		self.removeWidget(self.instance)
+		self.instance = None
+	
+	def removeWidget(self, instance):
+		pass
 
 # now some "real" components:
 
@@ -82,42 +154,74 @@ class Clock(HTMLComponent, GUIComponent, VariableText):
 		VariableText.__init__(self)
 		GUIComponent.__init__(self)
 		self.doClock()
+		
+		self.clockTimer = eTimer()
+		self.clockTimer.timeout.get().append(self.doClock)
+		self.clockTimer.start(1000)
 
 # "funktionalitaet"	
 	def doClock(self):
-		self.setText("clock: " + time.asctime())
+		t = time.localtime()
+		self.setText("%2d:%02d:%02d" % (t[3], t[4], t[5]))
 
 # realisierung als GUI
-	def GUIcreateInstance(self, priv, parent, skindata):
-		g = eLabel(parent)
-		return g
+	def createWidget(self, parent, skindata):
+		return eLabel(parent)
+
+	def removeWidget(self, w):
+		del self.clockTimer
 
 # ...und als HTML:
 	def produceHTML(self):
 		return self.getText()
-
+		
 class Button(HTMLComponent, GUIComponent, VariableText):
-	onClick = {}
-	
-	def __init__(self, text=""):
+	def __init__(self, text="", onClick = [ ]):
 		GUIComponent.__init__(self)
 		VariableText.__init__(self)
 		self.setText(text)
+		self.onClick = onClick
 	
-	def click(self):
+	def push(self):
 		for x in self.onClick:
 			x()
+		return 0
+	
+	def disable(self):
+#		self.instance.hide()
+		pass
+	
+	def enable(self):
+#		self.instance.show()
+		pass
 
-# html:	
+# html:
 	def produceHTML(self):
 		return "<input type=\"submit\" text=\"" + self.getText() + "\">\n"
 
 # GUI:
-	def GUIcreateInstance(self, priv, parent, skindata):
+	def createWidget(self, parent, skindata):
 		g = eButton(parent)
-#		g.clicked = [ self.click ]
+		g.selected.get().append(self.push)
 		return g
 
+	def removeWidget(self, w):
+		w.selected.get().remove(self.push)
+
+class Label(HTMLComponent, GUIComponent, VariableText):
+	def __init__(self, text=""):
+		GUIComponent.__init__(self)
+		VariableText.__init__(self)
+		self.setText(text)
+	
+# html:	
+	def produceHTML(self):
+		return self.getText()
+
+# GUI:
+	def createWidget(self, parent, skindata):
+		return eLabel(parent)
+	
 class Header(HTMLComponent, GUIComponent, VariableText):
 
 	def __init__(self, message):
@@ -128,9 +232,8 @@ class Header(HTMLComponent, GUIComponent, VariableText):
 	def produceHTML(self):
 		return "<h2>" + self.getText() + "</h2>\n"
 
-	def GUIcreateInstance(self, priv, parent, skindata):
+	def createWidget(self, parent, skindata):
 		g = eLabel(parent)
-		g.setText(self.message)
 		return g
 
 class VolumeBar(HTMLComponent, GUIComponent, VariableValue):
@@ -139,8 +242,291 @@ class VolumeBar(HTMLComponent, GUIComponent, VariableValue):
 		GUIComponent.__init__(self)
 		VariableValue.__init__(self)
 
-	def GUIcreateInstance(self, priv, parent, skindata):
+	def createWidget(self, parent, skindata):
 		g = eSlider(parent)
 		g.setRange(0, 100)
 		return g
+		
+# a general purpose progress bar
+class ProgressBar(HTMLComponent, GUIComponent, VariableValue):
+	def __init__(self):
+		GUIComponent.__init__(self)
+		VariableValue.__init__(self)
+
+	def createWidget(self, parent, skindata):
+		g = eSlider(parent)
+		g.setRange(0, 100)
+		return g
+	
+class MenuList(HTMLComponent, GUIComponent):
+	def __init__(self, list):
+		GUIComponent.__init__(self)
+		self.l = eListboxPythonStringContent()
+		self.l.setList(list)
+	
+	def getCurrent(self):
+		return self.l.getCurrentSelection()
+	
+	def GUIcreate(self, parent, skindata):
+		self.instance = eListbox(parent)
+		self.instance.setContent(self.l)
+	
+	def GUIdelete(self):
+		self.instance.setContent(None)
+		self.instance = None
+
+
+#  temp stuff :)
+class configBoolean:
+	def __init__(self, reg):
+		self.reg = reg
+		self.val = 0
+	
+	def toggle(self):
+		self.val += 1
+		self.val %= 3
+	
+	def __str__(self):
+		return ("NO", "YES", "MAYBE")[self.val]
+
+class configValue:
+	def __init__(self, obj):
+		self.obj = obj
+		
+	def __str__(self):
+		return self.obj
+
+def configEntry(obj):
+	# das hier ist ein zugriff auf die registry...
+	if obj == "HKEY_LOCAL_ENIGMA/IMPORTANT/USER_ANNOYING_STUFF/SDTV/FLASHES/GREEN":
+		return ("SDTV green flashes", configBoolean(obj))
+	elif obj == "HKEY_LOCAL_ENIGMA/IMPORTANT/USER_ANNOYING_STUFF/HDTV/FLASHES/GREEN":
+		return ("HDTV reen flashes", configBoolean(obj))
+	else:
+		return ("invalid", "")
+
+class ConfigList(HTMLComponent, GUIComponent):
+	def __init__(self, list):
+		GUIComponent.__init__(self)
+		self.l = eListboxPythonConfigContent()
+		self.l.setList(list)
+		self.l.setSeperation(100)
+	
+	def toggle(self):
+		selection = self.getCurrent()
+		selection[1].toggle()
+		self.invalidateCurrent()
+	
+	def getCurrent(self):
+		return self.l.getCurrentSelection()
+	
+	def invalidateCurrent(self):
+		self.l.invalidateEntry(self.l.getCurrentSelectionIndex())
+	
+	def GUIcreate(self, parent, skindata):
+		self.instance = eListbox(parent)
+		self.instance.setContent(self.l)
+	
+	def GUIdelete(self):
+		self.instance.setContent(None)
+		self.instance = None
+
+class ServiceList(HTMLComponent, GUIComponent):
+	def __init__(self):
+		GUIComponent.__init__(self)
+		self.l = eListboxServiceContent()
+		
+	def getCurrent(self):
+		r = eServiceReference()
+		self.l.getCurrent(r)
+		return r
+		
+	def moveUp(self):
+		self.instance.moveSelection(self.instance.moveUp)
+
+	def moveDown(self):
+		self.instance.moveSelection(self.instance.moveDown)
+
+	def GUIcreate(self, parent, skindata):
+		self.instance = eListbox(parent)
+		self.instance.setContent(self.l)
+	
+	def GUIdelete(self):
+		self.instance = None
+
+	def setRoot(self, root):
+		self.l.setRoot(root)
+		
+		# mark stuff
+	def clearMarked(self):
+		self.l.clearMarked()
+	
+	def isMarked(self, ref):
+		return self.l.isMarked(ref)
+
+	def addMarked(self, ref):
+		self.l.addMarked(ref)
+	
+	def removeMarked(self, ref):
+		self.l.removeMarked(ref)
+
+class ServiceScan:
+	
+	Idle = 1
+	Running = 2
+	Done = 3
+	Error = 4
+	
+	Errors = { 
+		0: "error starting scanning",
+		1: "error while scanning",
+		2: "no resource manager",
+		3: "no channel list"
+		}
+	
+	def scanStatusChanged(self):
+		if self.state == self.Running:
+			self.progressbar.setValue(self.scan.getProgress())
+			if self.scan.isDone():
+				errcode = self.scan.getError()
+				
+				if errcode == 0:
+					self.state = self.Done
+				else:
+					self.state = self.Error
+					self.errorcode = errcode
+			else:
+				self.text.setText("scan in progress - %d %% done!\n%d services found!" % (self.scan.getProgress(), self.scan.getNumServices()))
+		
+		if self.state == self.Done:
+			self.text.setText("scan done!")
+		
+		if self.state == self.Error:
+			self.text.setText("ERROR - failed to scan (%s)!" % (self.Errors[self.errorcode]) )
+	
+	def __init__(self, progressbar, text):
+		self.progressbar = progressbar
+		self.text = text
+		self.scan = eComponentScan()
+		self.state = self.Idle
+		self.scanStatusChanged()
+		
+	def execBegin(self):
+		self.scan.statusChanged.get().append(self.scanStatusChanged)
+		self.state = self.Running
+		err = self.scan.start()
+		if err:
+			self.state = self.Error
+			self.errorcode = 0
+
+		self.scanStatusChanged()
+	
+	def execEnd(self):
+		self.scan.statusChanged.get().remove(self.scanStatusChanged)
+		if not self.isDone():
+			print "*** warning *** scan was not finished!"
+
+	def isDone(self):
+		print "state is %d " % (self.state)
+		return self.state == self.Done or self.state == self.Error
+	
+class ActionMap:
+	def __init__(self, contexts = [ ], actions = { }, prio=0):
+		self.actions = actions
+		self.contexts = contexts
+		self.prio = prio
+		self.p = eActionMapPtr()
+		eActionMap.getInstance(self.p)
+
+	def execBegin(self):
+		for ctx in self.contexts:
+			self.p.bindAction(ctx, self.prio, self.action)
+	
+	def execEnd(self):
+		for ctx in self.contexts:
+			self.p.unbindAction(ctx, self.action)
+	
+	def action(self, context, action):
+		print " ".join(("action -> ", context, action))
+		if self.actions.has_key(action):
+			self.actions[action]()
+		else:
+			print "unknown action %s/%s! typo in keymap?" % (context, action)
+
+class PerServiceDisplay(GUIComponent, VariableText):
+	"""Mixin for building components which display something which changes on navigation events, for example "service name" """
+	
+	def __init__(self, navcore, eventmap):
+		GUIComponent.__init__(self)
+		VariableText.__init__(self)
+		self.eventmap = eventmap
+		navcore.m_event.get().append(self.event)
+		self.navcore = navcore
+
+		# start with stopped state, so simulate that
+		self.event(pNavigation.evStopService)
+
+	def event(self, ev):
+		# loop up if we need to handle this event
+		if self.eventmap.has_key(ev):
+			# call handler
+			self.eventmap[ev]()
+	
+	def createWidget(self, parent, skindata):
+		# by default, we use a label to display our data.
+		g = eLabel(parent)
+		return g
+
+class EventInfo(PerServiceDisplay):
+	Now = 0
+	Next = 1
+	Now_Duration = 2
+	Next_Duration = 3
+	
+	def __init__(self, navcore, now_or_next):
+		# listen to evUpdatedEventInfo and evStopService
+		# note that evStopService will be called once to establish a known state
+		self.now_or_next = now_or_next
+		PerServiceDisplay.__init__(self, navcore, 
+			{ 
+				pNavigation.evUpdatedEventInfo: self.ourEvent, 
+				pNavigation.evStopService: self.stopEvent 
+			})
+
+	def ourEvent(self):
+		info = iServiceInformationPtr()
+		service = iPlayableServicePtr()
+		
+		if not self.navcore.getCurrentService(service):
+			if not service.info(info):
+				ev = eServiceEventPtr()
+				if info.getEvent(ev, self.now_or_next & 1) == 0:
+					if self.now_or_next & 2:
+						self.setText("%d min" % (ev.m_duration / 60))
+					else:
+						self.setText(ev.m_event_name)
+		print "new event info in EventInfo! yeah!"
+
+	def stopEvent(self):
+		self.setText(
+			("waiting for event data...", "", "--:--",  "--:--")[self.now_or_next]);
+
+class ServiceName(PerServiceDisplay):
+	def __init__(self, navcore):
+		PerServiceDisplay.__init__(self, navcore,
+			{
+				pNavigation.evNewService: self.newService,
+				pNavigation.evStopService: self.stopEvent
+			})
+
+	def newService(self):
+		info = iServiceInformationPtr()
+		service = iPlayableServicePtr()
+		
+		if not self.navcore.getCurrentService(service):
+			if not service.info(info):
+				self.setText("no name known, but it should be here :)")
+	
+	def stopEvent(self):
+			self.setText("");