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from enigma import *
import time
import sys
# some helper classes first:
class HTMLComponent:
def produceHTML(self):
return ""
class HTMLSkin:
order = ()
def __init__(self, order):
self.order = order
def produceHTML(self):
res = "<html>\n"
for name in self.order:
res += self[name].produceHTML()
res += "</html>\n";
return res
class GUISkin:
def __init__(self):
pass
def createGUIScreen(self, parent):
for (name, val) in self.items():
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
# 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):
pass
def execBegin(self):
pass
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 setText(self, text):
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)
del self.instance
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 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)
del self.instance
def removeWidget(self, instance):
pass
# now some "real" components:
class Clock(HTMLComponent, GUIComponent, VariableText):
def __init__(self):
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):
t = time.localtime()
self.setText("%2d:%02d:%02d" % (t[3], t[4], t[5]))
# realisierung als GUI
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):
def __init__(self, text="", onClick = [ ]):
GUIComponent.__init__(self)
VariableText.__init__(self)
self.setText(text)
self.onClick = onClick
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:
def produceHTML(self):
return "<input type=\"submit\" text=\"" + self.getText() + "\">\n"
# GUI:
def createWidget(self, parent, skindata):
g = eButton(parent)
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):
GUIComponent.__init__(self)
VariableText.__init__(self)
self.setText(message)
def produceHTML(self):
return "<h2>" + self.getText() + "</h2>\n"
def createWidget(self, parent, skindata):
g = eLabel(parent)
return g
class VolumeBar(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
# 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)
del self.instance
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 GUIcreate(self, parent, skindata):
self.instance = eListbox(parent)
self.instance.setContent(self.l)
def GUIdelete(self):
del self.instance
def setRoot(self, root):
self.l.setRoot(root)
class ServiceScan:
Idle = 1
Running = 2
Done = 3
Error = 4
def scanStatusChanged(self):
if self.state == self.Running:
self.progressbar.setValue(self.scan.getProgress())
if self.scan.isDone():
self.state = self.Done
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!")
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)
if self.scan.start():
self.state = self.Error
else:
self.state = self.Running
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):
return self.state == self.Done
class ActionMap:
def __init__(self, context, actions = { }, prio=0):
self.actions = actions
self.context = context
self.prio = prio
self.p = eActionMapPtr()
eActionMap.getInstance(self.p)
def execBegin(self):
self.p.bindAction(self.context, self.prio, self.action)
def execEnd(self):
self.p.unbindAction(self.context, self.action)
def action(self, context, action):
try:
self.actions[action]()
except KeyError:
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
PerServiceDisplay.__init__(self, navcore,
{
pNavigation.evUpdatedEventInfo: self.ourEvent,
pNavigation.evStopService: self.stopEvent
})
self.now_or_next = now_or_next
def ourEvent(self):
info = iServiceInformationPtr()
service = iPlayableServicePtr()
if not self.navcore.getCurrentService(service):
if not service.info(info):
ev = eServiceEventPtr()
info.getEvent(ev, self.now_or_next & 1)
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...");
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("");
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