1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
|
from Components.HTMLSkin import *
from Components.GUISkin import *
import sys
class Screen(dict, HTMLSkin, GUISkin):
""" bla """
def __init__(self, session):
self.skinName = self.__class__.__name__
self.session = session
GUISkin.__init__(self)
self.onClose = [ ]
self.onExecBegin = [ ]
self.onShown = [ ]
self.onShow = [ ]
self.onHide = [ ]
self.execing = False
self.shown = False
# in order to support screens *without* a help,
# we need the list in every screen. how ironic.
self.helpList = [ ]
def execBegin(self):
self.active_components = [ ]
for x in self.onExecBegin:
x()
if self.session.current_dialog != self:
return
# assert self.session == None, "a screen can only exec once per time"
# self.session = session
for val in self.values() + self.renderer:
val.execBegin()
if self.session.current_dialog != self:
return
self.active_components.append(val)
self.execing = True
for x in self.onShown:
x()
def execEnd(self):
# for (name, val) in self.items():
for val in self.active_components:
val.execEnd()
del self.active_components
# assert self.session != None, "execEnd on non-execing screen!"
# self.session = None
self.execing = False
# 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)
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(self, *retval)
def setFocus(self, o):
self.instance.setFocus(o.instance)
def show(self):
if self.shown:
return
self.shown = True
self.instance.show()
for x in self.onShow:
x()
for val in self.values() + self.renderer:
if isinstance(val, GUIComponent):
val.onShow()
def hide(self):
if not self.shown:
return
self.shown = False
self.instance.hide()
for x in self.onHide:
x()
for val in self.values() + self.renderer:
if isinstance(val, GUIComponent):
val.onHide()
|
