-from Components.HTMLSkin import *
-from Components.GUISkin import *
-
-import sys
+from Components.HTMLSkin import HTMLSkin
+from Components.GUISkin import GUISkin
+from Components.Sources.Source import Source
+from Components.GUIComponent import GUIComponent
class Screen(dict, HTMLSkin, GUISkin):
- """ bla """
- def __init__(self, session):
+ ALLOW_SUSPEND = False
+
+ global_scren = None
+
+ def __init__(self, session, parent = None):
self.skinName = self.__class__.__name__
self.session = session
+ self.parent = parent
GUISkin.__init__(self)
-
+
self.onClose = [ ]
+ self.onFirstExecBegin = [ ]
self.onExecBegin = [ ]
self.onShown = [ ]
-
+
self.onShow = [ ]
self.onHide = [ ]
-
+
self.execing = False
- self.shown = False
+ self.shown = True
+ # already shown is false until the screen is really shown (after creation)
+ self.already_shown = False
+
+ self.renderer = [ ]
+
# in order to support screens *without* a help,
# we need the list in every screen. how ironic.
self.helpList = [ ]
-
+
+ self.close_on_next_exec = None
+
+ # stand alone screens (for example web screens)
+ # don't care about having or not having focus.
+ self.stand_alone = False
+
def execBegin(self):
self.active_components = [ ]
- for x in self.onExecBegin:
- x()
- if self.session.currentDialog != self:
- return
+ if self.close_on_next_exec is not None:
+ tmp = self.close_on_next_exec
+ self.close_on_next_exec = None
+ self.execing = True
+ self.close(tmp)
+ else:
+ single = self.onFirstExecBegin
+ self.onFirstExecBegin = []
+ for x in self.onExecBegin + single:
+ x()
+ if not self.stand_alone and self.session.current_dialog != self:
+ return
-# assert self.session == None, "a screen can only exec one per time"
-# self.session = session
+# assert self.session == None, "a screen can only exec once per time"
+# self.session = session
- for (name, val) in self.items():
- val.execBegin()
- if self.session.currentDialog != self:
- return
- self.active_components.append(val)
+ for val in self.values() + self.renderer:
+ val.execBegin()
+ if not self.stand_alone and self.session.current_dialog != self:
+ return
+ self.active_components.append(val)
- self.execing = True
+ self.execing = True
- for x in self.onShown:
- x()
+ for x in self.onShown:
+ x()
def execEnd(self):
# for (name, val) in self.items():
# never call this directly - it will be called from the session!
def doClose(self):
+ self.hide()
for x in self.onClose:
x()
# fixup circular references
del self.helpList
GUISkin.close(self)
+
+ # first disconnect all render from their sources.
+ # we might split this out into a "unskin"-call,
+ # but currently we destroy the screen afterwards
+ # anyway.
+ for val in self.renderer:
+ val.disconnectAll() # disconnected converter/sources and probably destroy them
del self.session
for (name, val) in self.items():
+ val.destroy()
del self[name]
+ for val in self.renderer:
+ val.destroy()
+
+ self.renderer = [ ]
+
# really delete all elements now
self.__dict__.clear()
def close(self, *retval):
- self.session.close(*retval)
+ if not self.execing:
+ self.close_on_next_exec = retval
+ else:
+ self.session.close(self, *retval)
def setFocus(self, o):
self.instance.setFocus(o.instance)
def show(self):
- if self.shown:
+ if (self.shown and self.already_shown) or not self.instance:
return
self.shown = True
+ self.already_shown = True
self.instance.show()
for x in self.onShow:
x()
+ for val in self.values() + self.renderer:
+ if isinstance(val, GUIComponent) or isinstance(val, Source):
+ val.onShow()
def hide(self):
- if not self.shown:
+ if not self.shown or not self.instance:
return
self.shown = False
self.instance.hide()
for x in self.onHide:
x()
+ for val in self.values() + self.renderer:
+ if isinstance(val, GUIComponent) or isinstance(val, Source):
+ val.onHide()
+
+ def __repr__(self):
+ return str(type(self))
+
+ def getRelatedScreen(self, name):
+ if name == "session":
+ return self.session.screen
+ elif name == "parent":
+ return self.parent
+ elif name == "global":
+ return self.global_screen
+ else:
+ return None
projects / vuplus_dvbapp / blobdiff