Unplugging/Removing an output may result in dangling pointers

[PaideiaDilemma]

Regression?

No

Hyprlock Info and Version

Hyprlock 0.6.0-git (dc6d721)

Compositor Info and Version

System/Version info

Hyprland 0.47.0 built from branch  at commit 54441e0c4e51dd182f78876c014446d5d0359ba8  ().
Date: 2025-02-06
Tag: v0.47.0, commits: 
built against:
 aquamarine 0.7.2
 hyprlang 0.6.0
 hyprutils 0.5.0
 hyprcursor 0.1.11
 hyprgraphics 0.1.1


no flags were set


System Information:
System name: Linux
Node name: desktop
Release: 6.13.0
Version: #1-NixOS SMP PREEMPT_DYNAMIC Sun Jan 19 23:51:45 UTC 2025


GPU information: 
03:00.0 VGA compatible controller [0300]: Advanced Micro Devices, Inc. [AMD/ATI] Navi 23 [Radeon RX 6650 XT / 6700S / 6800S] [1002:73ef] (rev c1) (prog-if 00 [VGA controller])
04:00.0 Non-Volatile memory controller [0108]: Sandisk Corp SanDisk Ultra 3D / WD Blue SN570 NVMe SSD (DRAM-less) [15b7:501a] (prog-if 02 [NVM Express])
	Subsystem: Sandisk Corp SanDisk Ultra 3D / WD Blue SN570 NVMe SSD (DRAM-less) [15b7:501a]
0e:00.0 VGA compatible controller [0300]: Advanced Micro Devices, Inc. [AMD/ATI] Raphael [1002:164e] (rev cb) (prog-if 00 [VGA controller])


os-release: ANSI_COLOR="0;38;2;126;186;228"
BUG_REPORT_URL="https://github.com/NixOS/nixpkgs/issues"
BUILD_ID="25.05.20250204.799ba5b"
CPE_NAME="cpe:/o:nixos:nixos:25.05"
DEFAULT_HOSTNAME=nixos
DOCUMENTATION_URL="https://nixos.org/learn.html"
HOME_URL="https://nixos.org/"
ID=nixos
ID_LIKE=""
IMAGE_ID=""
IMAGE_VERSION=""
LOGO="nix-snowflake"
NAME=NixOS
PRETTY_NAME="NixOS 25.05 (Warbler)"
SUPPORT_URL="https://nixos.org/community.html"
VARIANT=""
VARIANT_ID=""
VENDOR_NAME=NixOS
VENDOR_URL="https://nixos.org/"
VERSION="25.05 (Warbler)"
VERSION_CODENAME=warbler
VERSION_ID="25.05"


plugins:

Description

Removing an output will remove widgets associated to that output right away.

Widgets use the asyncResourceGatherer's asset callback to update widgets.

    request.callback     = onAssetCallback;
    request.callbackData = this;

The problem is that we have no way to invalidate that when we remove an output.
Other timers do get reset when calling the dtor, but not the pointers for the callback.

How to reproduce

1. Have lots of label updates.
2. Power-cycle a monitor.

Crash reports, logs, images, videos

No response

[PaideiaDilemma]

Fixing this properly involves quite a few changes.
So I think we should release v0.7.0 first, merge the on-click stuff after and then fix this.