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some cleanups

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git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@18834 a95241bf-73f2-0310-859d-f6bbb57e9c96
This commit is contained in:
Stefano Ceccherini 2006-09-14 12:11:29 +00:00
parent 6caa106f8b
commit 277a78abf5
1 changed files with 21 additions and 20 deletions
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41
src/kits/interface/PopUpMenu.cpp
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@ -14,6 +14,7 @@
#include <PopUpMenu.h>
#include <Window.h>
#include <new>
struct popup_menu_data {
BPopUpMenu *object;
@ -264,15 +265,18 @@ BMenuItem *
BPopUpMenu::_go(BPoint where, bool autoInvoke, bool startOpened,
BRect *_specialRect, bool async)
{
BMenuItem *selected = NULL;
popup_menu_data *data = new (nothrow) popup_menu_data;
if (!data)
return NULL;
// Can't use Window(), as the BPopUpMenu isn't attached
BLooper *looper = BLooper::LooperForThread(find_thread(NULL));
BWindow *window = dynamic_cast<BWindow *>(looper);
popup_menu_data *data = new popup_menu_data;
sem_id sem = create_sem(0, "window close lock");
if (sem < B_OK) {
delete data;
return NULL;
}
// Get a pointer to the window from which Go() was called
BWindow *window = dynamic_cast<BWindow *>(BLooper::LooperForThread(find_thread(NULL)));
data->window = window;
// Asynchronous menu: we set the BWindow menu's semaphore
@ -289,7 +293,7 @@ BPopUpMenu::_go(BPoint where, bool autoInvoke, bool startOpened,
data->async = async;
data->where = where;
data->startOpened = startOpened;
data->selected = selected;
data->selected = NULL;
data->lock = sem;
// Spawn the tracking thread
@ -305,22 +309,22 @@ BPopUpMenu::_go(BPoint where, bool autoInvoke, bool startOpened,
resume_thread(fTrackThread);
// Synchronous menu: we block on the sem till
// the other thread deletes it.
BMenuItem *selected = NULL;
if (!async) {
if (window) {
// TODO: usually it's not a good idea to check for a particular error
// code. Though here we just want to wait till the semaphore is deleted
// (it will return B_BAD_SEM_ID in that case), not provide locking or whatever.
while (acquire_sem_etc(sem, 1, B_TIMEOUT, 50000) != B_BAD_SEM_ID) {
// Synchronous menu: we update the parent window in a loop,
// until the other thread finishes and deletes this semaphore.
if (window != NULL) {
while (acquire_sem_etc(sem, 1, B_TIMEOUT, 50000) != B_BAD_SEM_ID)
window->UpdateIfNeeded();
}
}
status_t unused;
while (wait_for_thread(fTrackThread, &unused) == B_INTERRUPTED)
;
fTrackThread = -1;
selected = data->selected;
delete data;
}
@ -359,8 +363,7 @@ BPopUpMenu::entry(void *arg)
BMenuItem *
BPopUpMenu::start_track(BPoint where, bool autoInvoke,
bool startOpened, BRect *_specialRect)
BPopUpMenu::start_track(BPoint where, bool autoInvoke, bool startOpened, BRect *_specialRect)
{
fWhere = where;
@ -383,8 +386,6 @@ BPopUpMenu::start_track(BPoint where, bool autoInvoke,
Hide();
be_app->ShowCursor();
fTrackThread = -1;
return result;
}