+ del self.current_dialog.callback
+
+ self.popCurrent()
+ if callback is not None:
+ callback(*retval)
+
+ def execBegin(self, first=True, do_show = True):
+ assert not self.in_exec
+ self.in_exec = True
+ c = self.current_dialog
+
+ # when this is an execbegin after a execend of a "higher" dialog,
+ # popSummary already did the right thing.
+ if first:
+ self.pushSummary()
+ summary = c.createSummary() or SimpleSummary
+ self.summary = self.instantiateSummaryDialog(summary, c)
+ self.summary.show()
+ c.addSummary(self.summary)
+
+ c.execBegin()
+
+ # when execBegin opened a new dialog, don't bother showing the old one.
+ if c == self.current_dialog and do_show:
+ c.show()
+
+ def execEnd(self, last=True):
+ assert self.in_exec
+ self.in_exec = False
+
+ self.current_dialog.execEnd()
+ self.current_dialog.hide()
+
+ if last:
+ self.current_dialog.removeSummary(self.summary)
+ self.popSummary()
+
+ def create(self, screen, arguments, **kwargs):
+ # creates an instance of 'screen' (which is a class)
+ try:
+ return screen(self, *arguments, **kwargs)
+ except:
+ errstr = "Screen %s(%s, %s): %s" % (str(screen), str(arguments), str(kwargs), exc_info()[0])
+ print errstr
+ print_exc(file=stdout)
+ quitMainloop(5)
+
+ def instantiateDialog(self, screen, *arguments, **kwargs):
+ return self.doInstantiateDialog(screen, arguments, kwargs, self.desktop)
+
+ def deleteDialog(self, screen):
+ screen.hide()
+ screen.doClose()
+
+ def instantiateSummaryDialog(self, screen, *arguments, **kwargs):
+ return self.doInstantiateDialog(screen, arguments, kwargs, self.summary_desktop)
+
+ def doInstantiateDialog(self, screen, arguments, kwargs, desktop):
+ # create dialog
+
+ try:
+ dlg = self.create(screen, arguments, **kwargs)
+ except:
+ print 'EXCEPTION IN DIALOG INIT CODE, ABORTING:'
+ print '-'*60
+ print_exc(file=stdout)
+ quitMainloop(5)
+ print '-'*60
+
+ if dlg is None:
+ return
+
+ # read skin data
+ readSkin(dlg, None, dlg.skinName, desktop)
+
+ # create GUI view of this dialog
+ assert desktop is not None
+
+ dlg.setDesktop(desktop)
+ dlg.applySkin()
+
+ return dlg
+
+ def pushCurrent(self):
+ if self.current_dialog is not None:
+ self.dialog_stack.append((self.current_dialog, self.current_dialog.shown))
+ self.execEnd(last=False)
+
+ def popCurrent(self):
+ if self.dialog_stack:
+ (self.current_dialog, do_show) = self.dialog_stack.pop()
+ self.execBegin(first=False, do_show=do_show)
+ else:
+ self.current_dialog = None
+
+ def execDialog(self, dialog):
+ self.pushCurrent()
+ self.current_dialog = dialog
+ self.current_dialog.isTmp = False
+ self.current_dialog.callback = None # would cause re-entrancy problems.
+ self.execBegin()
+
+ def openWithCallback(self, callback, screen, *arguments, **kwargs):
+ dlg = self.open(screen, *arguments, **kwargs)
+ dlg.callback = callback
+ return dlg
+
+ def open(self, screen, *arguments, **kwargs):
+ if self.dialog_stack and not self.in_exec:
+ raise RuntimeError("modal open are allowed only from a screen which is modal!")
+ # ...unless it's the very first screen.
+
+ self.pushCurrent()
+ dlg = self.current_dialog = self.instantiateDialog(screen, *arguments, **kwargs)
+ dlg.isTmp = True
+ dlg.callback = None
+ self.execBegin()
+ return dlg
+
+ def close(self, screen, *retval):
+ if not self.in_exec:
+ print "close after exec!"
+ return