Stop trying to deal with "theoretical possibilities".
We can't possibly continue to be a faithful GActionGroup implementation
across dispose because dispose has a side effect of removing everyone's
signal handlers.
The code that we ran after the dispose chainup to do all of the fancy
signal emulation was therefore dead. The test that aimed to verify this
was buggy itself due to an uninitialised variable, so really, it never
worked at all.
We keep the re-ordering of the chainup from the original commit to avoid having
trouble with GtkActionMuxer and keep the checks in place that will prevent an
outright segfault in the case that someone else tries to use the interface
post-dispose.
https://bugzilla.gnome.org/show_bug.cgi?id=722189
With proper notifications, plus an accessor method for that state. This
allows client to just listen to notify::is-maximized instead of tracking
window-state-event.
https://bugzilla.gnome.org/show_bug.cgi?id=698786
This leads to disastruous results, since each menu is itself
in a GtkWindow, so holding down the menu key leads to a neverending
cascade of menus on top of menus.
https://bugzilla.gnome.org/show_bug.cgi?id=722106
Theming code gets confused when computing the spacing for 0px wide dots
and then divides by 0. And then cairo complains and stops drawing
anything forever out of spite and then we end up with a single color
screen.
https://bugzilla.gnome.org/show_bug.cgi?id=721800
The window-dragging code had a number of issues: The code was
starting a drag on every button press, never bothering to cancel
them. This leads to the odd hand cursor occurring between the two
clicks to maximize. We relied on GDK's multi-click detection, which
gives us triple-clicks when we really want sequences of double-clicks.
Lastly, we didn't propery restrict double-click handling to the primary
button, so e.g. if you had a window on an empty workspace, double-right
click on the titlebar would maximize it, which is not intended.
This commit solves all three problem by a doing our own double-click
detection, and only starting a drag when the pointer goes out of
'double-click range'. We change the way dragging is implemented for
menubars and toolbars to just letting events bubble up, so they
get the same behaviour as the titlebar. To make this work, we
have to select for pointer motion events in a few more places.
The behaviour of gtk_text_view_add_child_in_window() used to be
quite broken. It scrolled with the window during scrolling, then
jumped to the absolute position when the widget resized. Furthermore,
in 3.10 we broke the first feature, making it always be fixed.
The "proper" way to handle this is to always follow scrolling. This
is what the only user so far (gedit) wants, and if you want some
kind of overlay you should use GtkOverlay instead.
So, this changes the behaviour to something that is internally consistent
and works. I.e. all added widgets scroll with the textview as needed.
https://bugzilla.gnome.org/show_bug.cgi?id=711826
Modify the tracker so that it manages the visibility of
GtkMenuTrackerItem by issuing insert and remove callbacks to the
user of the tracker.
This works by treating the GtkMenuTrackerItem as a virtual section which
contains 1 item when the item is visible and 0 items when it is hidden.
For efficiency reasons, we only employ this trick in the case that the
item has a hidden-when='' attribute set on it.
https://bugzilla.gnome.org/show_bug.cgi?id=688421
Add an internal API for checking if a GtkMenuTrackerItem is visible,
along with a signal for reporting changes in that flag. The item will
become invisible in situations according to the new hidden-when=''
attribute, which can be set to 'action-disabled' or 'action-missing'.
This new flag doesn't actually do anything yet, and none of the
consumers of GtkMenuTracker do anything with it (nor should they). A
followup patch will address the issue.
https://bugzilla.gnome.org/show_bug.cgi?id=688421
Refactor the code in the action observer remove function in order to
make way for the (efficient) handling of hiding of the item in the case
that hidden-when='' is given.
https://bugzilla.gnome.org/show_bug.cgi?id=688421
Strictly speaking, can_activate should always be set back to FALSE when
the action disappears from the muxer (since we can't activate it
anymore) but we forgot to do that.
This 'bug' could never cause a problem because 'can_activate' is never
directly queried for anything at all and the item would get marked
insensitive anyway. As soon as the action was re-added, can_activate
would be recalculated based on the new action before anything else could
happen.
All the same, this should be cleared here.
https://bugzilla.gnome.org/show_bug.cgi?id=688421
Remove a hash lookup from the separator sync logic (which is run every
time we change a menu). Instead, we do the lookup when creating the
section and cache the result.
This refactor will also help us in a future commit to add support for
hiding menu items based on missing actions.
https://bugzilla.gnome.org/show_bug.cgi?id=688421
This adds save/restore calls to the clear-to-transparent call in
the pixel cache, to avoid changing the default color of the
cairo_t. It also removes a call set_operator call that is no longer
necessary (it was trying to manually restore the state).
https://bugzilla.gnome.org/show_bug.cgi?id=721480
GtkApplicationWindow frees its internal action group on dispose for the
usual reasons: to avoid the possibility of reference cycles caused by
actions referring back to the window again.
Unfortunately, if it happens to be inside of a GtkActionMuxer at the
time that it is disposed, it will (eventually) be removed from the muxer
after it has been disposed. Removing an action group from a muxer
involves a call to g_action_group_list_actions() which will crash
because the internal action group to which we normally delegate the call
has been freed.
A future patch that reworks the quartz menu code will introduce a use of
GtkActionMuxer in a way that causes exactly this problem.
We can guard against the problem in a number of ways.
First, we can avoid the entire situation by ensuring that we are removed
from the muxer before we destroy the action group. To this end, we
delay destruction of the action group until after the chain-up to the
dispose of GtkWindow (which is where the window is removed from the
GtkApplication).
Secondly, we can add checks to each of our GActionGroup and GActionMap
implementation functions to check that the internal action group is
still alive before we attempt to delegate to it.
We have to be careful, though: because our _list_actions() call will
suddenly be returning an empty list, people watching the group from
outside will have expected to see "action-removed" calls for the
now-missing items. Make sure we send those. but only if someone is
watching.
https://bugzilla.gnome.org/show_bug.cgi?id=710351
A widget intended to offer contextual actions for a given view.
It allows packing children into the start or end as well as offering
a single centered child box.
https://bugzilla.gnome.org/show_bug.cgi?id=721665
