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fix a crash when setting focus if prev is null

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This commit is contained in:
Jinhao 2015-12-20 03:00:33 +08:00
parent 1446849454
commit 75800b2e78
1 changed files with 24 additions and 21 deletions
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13
source/gui/detail/window_manager.cpp
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@ -927,12 +927,15 @@ namespace detail
arg.receiver = wd->root; arg.receiver = wd->root;
brock.emit(event_code::focus, prev_focus, arg, true, brock.get_thread_context()); brock.emit(event_code::focus, prev_focus, arg, true, brock.get_thread_context());
} }
//Check the prev_focus again, because it may be closed in focus event
if (!impl_->wd_register.available(prev_focus))
prev_focus = nullptr;
} }
else if(wd->root == native_interface::get_focus_window()) else if(wd->root == native_interface::get_focus_window())
wd = nullptr; //no new focus_window return prev_focus; //no new focus_window
if(wd)
{
if(wd->together.caret) if(wd->together.caret)
wd->together.caret->set_active(true); wd->together.caret->set_active(true);
@ -949,12 +952,12 @@ namespace detail
//focus window is a menubar. //focus window is a menubar.
//The focus window will be restore to the prev focus which losts the focus becuase of //The focus window will be restore to the prev focus which losts the focus becuase of
//memberbar. //memberbar.
if (wd == wd->root_widget->other.attribute.root->menubar) if (prev_focus && (wd == wd->root_widget->other.attribute.root->menubar))
wd = prev_focus; wd = prev_focus;
if (wd != wd->root_widget->other.attribute.root->menubar) if (wd != wd->root_widget->other.attribute.root->menubar)
brock.set_menubar_taken(wd); brock.set_menubar_taken(wd);
}
return prev_focus; return prev_focus;
} }