def with_clipboard_lock(self,
success_callback,
failure_callback,
retries=RETRY,
delay=DELAY):
log("with_clipboard_lock%s",
(success_callback, failure_callback, retries, delay))
r = OpenClipboard(self.window)
if r:
log("OpenClipboard(%#x)=%s", self.window, r)
try:
r = success_callback()
log("%s()=%s", success_callback, r)
if r:
return
finally:
r = CloseClipboard()
log("CloseClipboard()=%s", r)
e = WinError(GetLastError())
owner = GetClipboardOwner()
log("OpenClipboard(%#x)=%s, current owner: %s", self.window, e,
get_owner_info(owner, self.window))
if retries <= 0:
failure_callback(
"OpenClipboard: too many failed attempts, giving up")
return
#try again later:
GLib.timeout_add(delay, self.with_clipboard_lock, success_callback,
failure_callback, retries - 1, delay + 5)
def wnd_proc(self, hwnd, msg, wparam, lparam):
r = DefWindowProcW(hwnd, msg, wparam, lparam)
if msg in CLIPBOARD_EVENTS:
owner = GetClipboardOwner()
log("clipboard event: %s, current owner: %s",
CLIPBOARD_EVENTS.get(msg), get_owner_info(owner, self.window))
if msg == WM_CLIPBOARDUPDATE and owner != self.window:
owner = GetClipboardOwner()
owner_info = get_owner_info(owner, self.window)
if is_blacklisted(owner_info):
#ie: don't try to sync from VirtualBox
log("CLIPBOARDUPDATE coming from '%s' ignored", owner_info)
return r
for proxy in self._clipboard_proxies.values():
if not proxy._block_owner_change:
proxy.schedule_emit_token()
return r
def with_clipboard_lock(self,
success_callback,
failure_callback,
retries=5,
delay=5):
r = OpenClipboard(self.window)
if r:
log("OpenClipboard(%#x)=%s", self.window, r)
try:
success_callback()
return
finally:
CloseClipboard()
log("OpenClipboard(%#x)=%s, owner=%#x", self.window,
WinError(GetLastError()), GetClipboardOwner())
if retries <= 0:
failure_callback(
"OpenClipboard: too many failed attemps, giving up")
return
#try again later:
glib.timeout_add(delay, self.with_clipboard_lock, success_callback,
failure_callback, retries - 1, delay + 5)