Integrate visual image previews using custom walker/elephant provider

elephant/menus/blob_background_selector.lua

@@ -0,0 +1,57 @@
+Name = "blobBackgroundSelector"
+NamePretty = "Blob's Background Selector"
+Cache = false
+HideFromProviderlist = true
+SearchName = true
+
+local function ShellEscape(s)
+  return "'" .. s:gsub("'", "'\\''") .. "'"
+end
+
+function FormatName(filename)
+  local name = filename:gsub("^%d+", ""):gsub("^%-", "")
+  name = name:gsub("%.[^%.]+$", "")
+  name = name:gsub("-", " ")
+  name = name:gsub("%S+", function(word)
+    return word:sub(1, 1):upper() .. word:sub(2):lower()
+  end)
+  return name
+end
+
+function GetEntries()
+  local entries = {}
+  local home = os.getenv("HOME")
+
+  local dirs = {
+    home .. "/wallpapers",
+  }
+
+  local seen = {}
+
+  for _, wallpaper_dir in ipairs(dirs) do
+    local handle = io.popen(
+      "find " .. ShellEscape(wallpaper_dir)
+        .. " -maxdepth 1 -type f \\( -name '*.jpg' -o -name '*.jpeg' -o -name '*.png' -o -name '*.gif' -o -name '*.bmp' -o -name '*.webp' \\) 2>/dev/null | sort"
+    )
+    if handle then
+      for background in handle:lines() do
+        local filename = background:match("([^/]+)$")
+        if filename and not seen[filename] then
+          seen[filename] = true
+          table.insert(entries, {
+            Text = FormatName(filename),
+            Value = filename,
+            Actions = {
+              activate = "blob_wallpaper " .. ShellEscape(background),
+            },
+            Preview = background,
+            PreviewType = "file",
+          })
+        end
+      end
+      handle:close()
+    end
+  end
+
+  return entries
+end