尝试用可滾动平铺窗口管理器 niri 替换基于 i3 的 swaywm 以及一个简单的窗口切换脚本

#!/usr/bin/env bash

# orig ref: https://github.com/armerpunkt/niri-fuzzel-switcher/

set -xeu

SWBIN=/run/current-system/sw/bin
exec > >(${SWBIN}/logger -t windows-switcher) 2>&1

WINDOW_IDS_FN=/tmp/switch-window-ids
window_ids=()
window_titles=()

focused_wid=$(niri msg --json windows |  jq -r '.[] | select(.is_focused == true) | .id')

while read i; do
  declare -a line_array="($i)"
  window_ids+=(${line_array[0]})
  if [[ ${line_array[1]} == "org.qutebrowser.qutebrowser" ]];then
      window_titles+=("${line_array[2]} \0icon\x1fqutebrowser")
  elif [[ ${line_array[1]} == "mpv" ]];then
      window_titles+=("${line_array[2]} \0icon\x1fmpv")
  elif [[ ${line_array[1]} == "emacs" ]];then
      window_titles+=("${line_array[2]} - emacs \0icon\x1f${line_array[1]}")
  elif [[ ${line_array[1]} == "com.mitchellh.ghostty" ]];then
      window_titles+=("${line_array[2]} - ghostty \0icon\x1f${line_array[1]}")
  else
      window_titles+=("${line_array[2]} \0icon\x1f${line_array[1]}")
  fi
done <<<$(niri msg --json windows | jq -r '.[] | select(.is_focused == false) | [ .id, .app_id, .title] | "\""+join ("\" \"")+"\""')



sort_windows_by_file() {
    local file=${WINDOW_IDS_FN}
    # 检查文件是否存在
    [[ ! -f "$file" ]] && return 0

    # 读取文件中的 window_id
    local file_ids=()
    while IFS= read -r line; do
        file_ids+=("$line")
    done < "$file"

    # 创建临时数组存储排序结果
    local sorted_ids=()
    local sorted_titles=()

    # 步骤1：处理文件中存在的 ID
    declare -A id_present
    for id in "${window_ids[@]}"; do
        id_present["$id"]=1
    done

    # 按照文件顺序添加存在的 ID
    for file_id in "${file_ids[@]}"; do
        if [[ -n "${id_present[$file_id]:-}" ]]; then
            # 查找所有匹配的索引
            for idx in "${!window_ids[@]}"; do
                if [[ "${window_ids[$idx]}" == "$file_id" ]]; then
                    sorted_ids+=("$file_id")
                    sorted_titles+=("${window_titles[$idx]}")
                    # 标记已处理
                    unset "window_ids[$idx]" "window_titles[$idx]"
                fi
            done
        fi
    done

    # 步骤2：添加剩余未处理的元素（保持原始顺序）
    for idx in "${!window_ids[@]}"; do
        sorted_ids+=("${window_ids[$idx]}")
        sorted_titles+=("${window_titles[$idx]}")
    done

    # 更新原始数组
    window_ids=("${sorted_ids[@]}")
    window_titles=("${sorted_titles[@]}")
}

write_window_ids_to_file() {
    if [ $# -ne 1 ]; then
        echo "Usage: write_window_ids_to_file <output_file>" >&2
        return 1
    fi

    # 遍历数组查找 selected_window_id
    for ((i = 0; i < ${#window_ids[@]}; i++)); do
        if [[ "${window_ids[i]}" == "${selected_wid}" ]]; then
            unset 'arr_ref[i]'          # 删除原位置的元素
        fi
        if [[ "${window_ids[i]}" == "${focused_wid}" ]]; then
            unset 'arr_ref[i]'          # 删除原位置的元素
        fi
    done

    window_ids=("${focused_wid}" "${selected_wid}" "${window_ids[@]}")  # 在开头插入并保留其他元素顺序

    local output_file="$1"
    local element

    if ! declare -p window_ids &>/dev/null; then
        echo "Error: window_ids array not defined" >&2
        return 1
    fi

    # 清空目标文件
    : > "$output_file"

    # 逐元素处理特殊字符，只允许正整数
    for element in "${window_ids[@]}"; do
        if [[ "$element" =~ ^[1-9][0-9]*$ ]]; then
            printf "%s\n" "$element" >> "$output_file"
        fi
    done
}


sort_windows_by_file

result=$(printf "%b\n" "${window_titles[@]}" | fuzzel --counter --dmenu --index)

selected_wid=${window_ids[result]}

write_window_ids_to_file ${WINDOW_IDS_FN}

if [ "x$result" != "x" ] && [ $result != -1 ]; then
  niri msg action focus-window --id ${selected_wid}
fi