Introduce container_is_scratchpad_hidden

Just a convenience function that improves readability of the code.

Other things worth noting:

* container_get_siblings and container_sibling_index no longer use the
const keyword
* container_handle_fullscreen_reparent is only ever called after
attaching the container to a workspace, so its con->workspace check has
been changed to an assertion

1 files changed, 4 insertions, 2 deletions

diff --git a/include/sway/tree/container.h b/include/sway/tree/container.h
index 543bd2cc..f7a4ac37 100644
--- a/include/sway/tree/container.h
+++ b/include/sway/tree/container.h
@@ -299,9 +299,9 @@ enum sway_container_layout container_parent_layout(struct sway_container *con);
 enum sway_container_layout container_current_parent_layout(
                 struct sway_container *con);
 
-list_t *container_get_siblings(const struct sway_container *container);
+list_t *container_get_siblings(struct sway_container *container);
 
-int container_sibling_index(const struct sway_container *child);
+int container_sibling_index(struct sway_container *child);
 
 list_t *container_get_current_siblings(struct sway_container *container);
 
@@ -354,4 +354,6 @@ void container_update_marks_textures(struct sway_container *container);
 
 void container_raise_floating(struct sway_container *con);
 
+bool container_is_scratchpad_hidden(struct sway_container *con);
+
 #endif