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# Module 'gwin'
# Generic stdwin windows
# This is used as a base class from which to derive other window types.
# The mainloop() function here is an event dispatcher for all window types.
import stdwin
import stdwinsupport
S = stdwinsupport # Shorthand
windows = [] # List of open windows
# Open a window
def open(title): # Open a generic window
w = stdwin.open(title)
stdwin.setdefwinsize(0, 0)
# Set default event handlers
w.draw = nop
w.char = nop
w.mdown = nop
w.mmove = nop
w.mup = nop
w.m2down = m2down
w.m2up = m2up
w.size = nop
w.move = nop
w.activate = w.deactivate = nop
w.timer = nop
# default command handlers
w.close = close
w.tab = tab
w.enter = enter
w.backspace = backspace
w.arrow = arrow
w.kleft = w.kup = w.kright = w.kdown = nop
windows.append(w)
return w
# Generic event dispatching
def mainloop(): # Handle events until no windows left
while windows:
treatevent(stdwin.getevent())
def treatevent(e): # Handle a stdwin event
type, w, detail = e
if type = S.we_draw:
w.draw(w, detail)
elif type = S.we_menu:
m, item = detail
m.action[item](w, m, item)
elif type = S.we_command:
treatcommand(w, detail)
elif type = S.we_char:
w.char(w, detail)
elif type = S.we_mouse_down:
if detail[1] > 1: w.m2down(w, detail)
else: w.mdown(w, detail)
elif type = S.we_mouse_move:
w.mmove(w, detail)
elif type = S.we_mouse_up:
if detail[1] > 1: w.m2up(w, detail)
else: w.mup(w, detail)
elif type = S.we_size:
w.size(w, w.getwinsize())
elif type = S.we_activate:
w.activate(w)
elif type = S.we_deactivate:
w.deactivate(w)
elif type = S.we_move:
w.move(w)
elif type = S.we_timer:
w.timer(w)
def treatcommand(w, type): # Handle a we_command event
if type = S.wc_close:
w.close(w)
elif type = S.wc_return:
w.enter(w)
elif type = S.wc_tab:
w.tab(w)
elif type = S.wc_backspace:
w.backspace(w)
elif type in (S.wc_left, S.wc_up, S.wc_right, S.wc_down):
w.arrow(w, type)
# Methods
def close(w): # Close method
for i in range(len(windows)):
if windows[i] is w:
del windows[i]
break
def arrow(w, detail): # Arrow key method
if detail = S.wc_left:
w.kleft(w)
elif detail = S.wc_up:
w.kup(w)
elif detail = S.wc_right:
w.kright(w)
elif detail = S.wc_down:
w.kdown(w)
# Trivial methods
def tab(w): w.char(w, '\t')
def enter(w): w.char(w, '\n') # 'return' is a Python reserved word
def backspace(w): w.char(w, '\b')
def m2down(w, detail): w.mdown(w, detail)
def m2up(w, detail): w.mup(w, detail)
def nop(args): pass
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