When dragging icons out of a folder dialog, there is a very peculiar
combination of steps that may break GNOME Shell:
1. Open an app folder dialog
2. Start dragging an icon to outside the grid
3. Wait until the popdown animation starts
4. Before it finishes, drop the icon
5. See the warnings / crash
That's caused by the source icon being destroyed after the delayed
move timer starts, and before it finishes.
Protect against the source icon being destroyed before the delayed
move timeout triggers by connecting to the 'destroy' signal and
removing the timeout on the callback. Use a single field, called
'_delayedMoveData', to store all data related to delayed moves.
https://gitlab.gnome.org/GNOME/gnome-shell/-/merge_requests/1447
When dragging an icon outside of a folder dialog, there's a small delay
before the dialog pops down. If the icon is dropped during this delay,
the drag is cancelled, and the icon continues to be in the folder.
However, this behavior turned out to be problematic, and it was a common
point of failure that throwing icons outside folders wouldn't work.
Remove the icon from the folder when dragging it to outside the dialog.
Related: https://gitlab.gnome.org/GNOME/gnome-shell/-/issues/3092https://gitlab.gnome.org/GNOME/gnome-shell/-/merge_requests/1447
At the end of BaseAppView._clearAnimateLater(), the '_grid' actor's opacity is
set to 255. As it turns out, _clearAnimateLater() is called, among others, by
vfunc_unmap(). However, unmapping is part of the destruction process, and at
the time it is called, '_grid' is already destroying, which makes GJS complain
about accessing an invalid object.
Don't change opacity on BaseAppView._clearAnimateLater(), and instead move it
to the couple of places outside vfunc_unmap() that call it.
https://gitlab.gnome.org/GNOME/gnome-shell/-/merge_requests/1447
After dragging an icon to inside a folder, we do not save the grid layout,
leaving the icon's position stored when it actually isn't there anymore.
Fix that by saving pages whenever folder apps change.
https://gitlab.gnome.org/GNOME/gnome-shell/-/merge_requests/1447
To delete a folder, FolderView needs to reset all keys under that particular
folder's GSettings path. That generates 5 'changed' signals, all of which
end up calling AppDisplay._redisplay(), which is costly.
Don't emit 'apps-changed' when deleting a folder.
https://gitlab.gnome.org/GNOME/gnome-shell/-/merge_requests/1447
If you try and drop an icon that's in the same page, but before the
drop target, it'll be one position ahead of where it should be -
because we just removed one icon before the target position.
Adjust the final position of the to-be-created folder.
https://gitlab.gnome.org/GNOME/gnome-shell/-/merge_requests/1447
When adding an item to the app grid, the item is added to
a sorted array. This is calculated by adding all visible
items in pages before the one being modified. Future commits
will need this to move items without reparenting them, so
factor this code into a separate function.
https://gitlab.gnome.org/GNOME/gnome-shell/-/merge_requests/1447
BaseAppView not disconnecting from the 'app-filter-changed'
signal means parental controls may trigger callbacks on
a destroyed grid, which tries to access destroyed icons,
which spams the journal with stack traces.
Disconnect from parental controls when BaseAppView is destroyed.
https://gitlab.gnome.org/GNOME/gnome-shell/-/merge_requests/1441
As per GSettings documentation, it is necessary to read a particular
key at least once before being able to connect to the corresponding
'changed::' signal.
Read the 'app-picker-layout' key before connecting to the changed
signal.
https://gitlab.gnome.org/GNOME/gnome-shell/-/merge_requests/1428
It is wasteful to emit layout-changed when updating pages, because
the caller (AppDisplay) already has an updated state by the time
this is called.
Only emit 'layout-changed' if the GSettings notification doesn't
come from AppDisplay updating the pages.
https://gitlab.gnome.org/GNOME/gnome-shell/-/merge_requests/1428
Fix what is probably a copy-paste error and return false instead of a
CONTINUE DragMotionResult which is only meant for dragMotion events, not
drop events. This makes sure we don't create a folder when dropping an
app over the drag leeways of another icon.
https://gitlab.gnome.org/GNOME/gnome-shell/-/merge_requests/1389
As per design discussion, the first page is a somewhat of a special
page where we really don't want to change anything unless necessary.
Append new icons at the first available slot after the first page.
Make the placeholder icon be appended to the first available page
as well, since it's always used when dragging from folder dialogs.
https://gitlab.gnome.org/GNOME/gnome-shell/-/merge_requests/1284
When the app folder dialog handles a drag hover, it starts a timeout
to popdown if dragging outside the "real" dialog area. However, when
dragging inside it, BaseAppView handles all drag hover events which
would disarm the popdown timeout. In cases like this, it's almost
impossible to prevent the timeout from triggering, which always pops
down the dialog.
Add a drag monitor when handling any drag hover (which only happens
when dragging outside the folder's icon grid); and eventually disarm
the popdown timeout from the monitor's motion event. Remove the drag
monitor when dragging over the folder dialog again.
https://gitlab.gnome.org/GNOME/gnome-shell/-/merge_requests/1284
App folders are now customizable, and the way to move icons to
another page is by throwing the cursor to either the left or
the right of the grid.
However, doing that triggers the popdown timeout, wich is 600ms
as of now, which is considerably short for such interaction.
Increase this timeout to 1.5 seconds.
https://gitlab.gnome.org/GNOME/gnome-shell/-/merge_requests/1284
Now that the DnD code is shared between AppDisplay and
FolderView, we hit an unexpected problem: FolderView is
handling drag events even when the folder dialog is hidden.
As a side effect, this spams the journal with warnings.
Only handle drag events when mapped. On unmap, disable
the view's drag monitor, and disconnect from all drag
events.
https://gitlab.gnome.org/GNOME/gnome-shell/-/merge_requests/1284
This code will be shared with FolderView in the next commit, so
avoid duplication already and move the to-be-shared code into the
base class.
Because BaseAppView can handle vertical and horizontal orientations,
adapt the drag overshoot code to also handle horizontal overshoot.
https://gitlab.gnome.org/GNOME/gnome-shell/-/merge_requests/1284
When redisplaying, we currently only remove and add icons, but
never adjust the position of already added icons. If the icon
position changed, it wouldn't be reflected on the icon grid.
Make sure to move already added icons.
https://gitlab.gnome.org/GNOME/gnome-shell/-/merge_requests/1284
It is important that '_loadApps()' return a sorted list -- adding the
same icons at the same positions but in different orders results in
a wrong icon grid.
Add support for using a custom positioning function, and implement it
in AppDisplay. Because FolderView doesn't implement a custom sorting
function, the items are still sorted alphabetically.
https://gitlab.gnome.org/GNOME/gnome-shell/-/merge_requests/1284
The leeways are parts of the icon that ignore incoming drag
events. This is how IconGrid and IconGridLayout treat it, and
this is how the icons should treat themselves too.
Make AppIcon ignore dragging over the left and right leeways.
https://gitlab.gnome.org/GNOME/gnome-shell/-/merge_requests/1284
