i3bar: count references to blocks

This prevents blocks from being destroyed before their hotspots are destroyed,
in case it is used for a pending click event that fires between the bar
receiving a new status, which destroys the block, and the bar rendering the new
status, which destroys the hotspot; this problem can be easily produced by
scrolling on a block that immediately causes a new status to be sent, with
multiple outputs

1 files changed, 2 insertions, 1 deletions

diff --git a/include/swaybar/status_line.h b/include/swaybar/status_line.h
index de9b98d7..150267cd 100644
--- a/include/swaybar/status_line.h
+++ b/include/swaybar/status_line.h
@@ -36,6 +36,7 @@ struct i3bar_protocol_state {
 
 struct i3bar_block {
         struct wl_list link;
+        int ref_count;
         char *full_text, *short_text, *align;
         bool urgent;
         uint32_t *color;
@@ -73,7 +74,7 @@ void status_line_free(struct status_line *status);
 bool i3bar_handle_readable(struct status_line *status);
 enum hotspot_event_handling i3bar_block_send_click(struct status_line *status,
                 struct i3bar_block *block, int x, int y, enum x11_button button);
-void i3bar_block_free(struct i3bar_block *block);
+void i3bar_block_unref(struct i3bar_block *block);
 enum x11_button wl_button_to_x11_button(uint32_t button);
 enum x11_button wl_axis_to_x11_button(uint32_t axis, wl_fixed_t value);