# Generic Split implementation.
# Use as a base class for other splits.
# Derived classes should at least implement the methods that call
# unimpl() below: getminsize(), getbounds() and setbounds().
Error = 'Split.Error' # Exception
import rect
from stdwinevents import *
class Split:
#
# Calls from creator
# NB derived classes may add parameters to create()
#
def create(self, parent):
parent.addchild(self)
self.parent = parent
self.children = []
self.mouse_interest = []
self.keybd_interest = []
self.timer_interest = []
self.altdraw_interest = []
self.mouse_focus = None
self.keybd_focus = None
return self
#
# Downcalls from parent to child
#
def destroy(self):
self.parent = None
for child in self.children:
child.destroy()
del self.children[:]
del self.mouse_interest[:]
del self.keybd_interest[:]
del self.timer_interest[:]
del self.altdraw_interest[:]
self.mouse_focus = None
self.keybd_focus = None
#
def getminsize(self, m, (width, height)):
return unimpl() # Should ask children
def getbounds(self):
return unimpl()
def setbounds(self, bounds):
unimpl() # Should tell children
#
def realize(self):
for child in self.children:
child.realize()
#
def draw(self, d, detail):
# (Could avoid calls to children outside the area)
for child in self.children:
child.draw(d, detail)
#
def altdraw(self, detail):
for child in self.altdraw_interest:
child.altdraw(detail)
#
# Keyboard focus handling (used internally)
# XXX This is not enough if two levels of splits
# XXX surround text fields!
#
def set_keybd_focus(self, child):
if self.keybd_focus <> child:
if self.keybd_focus:
self.keybd_focus.deactivate()
self.keybd_focus = None
if child:
child.activate()
self.keybd_focus = child
def next_keybd_focus(self):
if not self.keybd_interest:
self.set_keybd_focus(None)
return
if self.keybd_focus in self.keybd_interest:
i = self.keybd_interest.index(self.keybd_focus)
i = (i+1) % len(self.keybd_interest)
else:
i = 0
self.set_keybd_focus(self.keybd_interest[i])
#
# Downcalls only made after certain upcalls
#
def mouse_down(self, detail):
if self.mouse_focus:
self.mouse_focus.mouse_down(detail)
return
p = detail[0]
for child in self.mouse_interest:
if rect.pointinrect(p, child.getbounds()):
self.mouse_focus = child
if child in self.keybd_interest:
self.set_keybd_focus(child)
child.mouse_down(detail)
def mouse_move(self, detail):
if self.mouse_focus:
self.mouse_focus.mouse_move(detail)
def mouse_up(self, detail):
if self.mouse_focus:
self.mouse_focus.mouse_up(detail)
self.mouse_focus = None
#
def activate(self):
if self.keybd_focus:
self.keybd_focus.activate()
else:
self.next_keybd_focus()
def deactivate(self):
if self.keybd_focus:
self.keybd_focus.deactivate()
#
def keybd(self, type, detail):
if not self.keybd_focus:
self.set_keybd_focus(self.keybd_interest[0])
if type == WE_COMMAND and detail == WC_TAB and \
len(self.keybd_interest) > 1:
self.next_keybd_focus()
return
self.keybd_focus.keybd(type, detail)
#
def timer(self):
for child in self.timer_interest:
child.timer()
#
# Upcalls from child to parent
#
def addchild(self, child):
if child in self.children:
raise Error, 'addchild: child already inlist'
self.children.append(child)
def delchild(self, child):
if child not in self.children:
raise Error, 'delchild: child not in list'
self.children.remove(child)
if child in self.mouse_interest:
self.mouse_interest.remove(child)
if child in self.keybd_interest:
self.keybd_interest.remove(child)
if child in self.timer_interest:
self.timer_interest.remove(child)
if child in self.altdraw_interest:
self.altdraw_interest.remove(child)
if child == self.mouse_focus:
self.mouse_focus = None
if child == self.keybd_focus:
self.keybd_focus = None
#
def need_mouse(self, child):
if child not in self.mouse_interest:
self.mouse_interest.append(child)
self.parent.need_mouse(self)
def no_mouse(self, child):
if child == self.mouse_focus:
self.mouse_focus = None
if child in self.mouse_interest:
self.mouse_interest.remove(child)
if not self.mouse_interest:
self.parent.no_mouse(self)
#
def need_keybd(self, child):
if child not in self.keybd_interest:
self.keybd_interest.append(child)
self.parent.need_keybd(self)
if not self.keybd_focus:
self.set_keybd_focus(child)
def no_keybd(self, child):
if child == self.keybd_focus:
self.keybd_focus = None # Don't call child.deactivate()
if child in self.keybd_interest:
self.keybd_interest.remove(child)
if not self.keybd_interest:
self.parent.no_keybd(self)
#
def need_timer(self, child):
if child not in self.timer_interest:
self.timer_interest.append(child)
self.parent.need_timer(self)
def no_timer(self, child):
if child in self.timer_interest:
self.timer_interest.remove(child)
if not self.timer_interest:
self.parent.no_timer(self)
#
def need_altdraw(self, child):
if child not in self.altdraw_interest:
self.altdraw_interest.append(child)
self.parent.need_altdraw(self)
def no_altdraw(self, child):
if child in self.altdraw_interest:
self.altdraw_interest.remove(child)
if not self.altdraw_interest:
self.parent.no_altdraw(self)
#
# The rest are transparent:
#
def begindrawing(self):
return self.parent.begindrawing()
def beginmeasuring(self):
return self.parent.beginmeasuring()
def getwindow(self):
return self.parent.getwindow()
#
def change(self, area):
self.parent.change(area)
def scroll(self, area, vector):
self.parent.scroll(area, vector)
def settimer(self, itimer):
self.parent.settimer(itimer)
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