added functionality to choose using a dropdown

Author: Rimkomatic

lua/switchscheme.lua

@@ -1,40 +1,73 @@
+local telescope = require("telescope")
+local pickers = require("telescope.pickers")
+local finders = require("telescope.finders")
+local conf = require("telescope.config").values
+local actions = require("telescope.actions")
+local action_state = require("telescope.actions.state")
+
+-- Function to update line number colors
 local updateLineNumberColors = function()
 	vim.api.nvim_set_hl(0, "LineNr", { fg = "#ffffff" })
 	vim.api.nvim_set_hl(0, "CursorLineNr", { fg = "#ffffff", bold = true })
 end
 
-vim.api.nvim_create_user_command("LineColor", updateLineNumberColors, {})
-vim.keymap.set("n", "<leader>clc", updateLineNumberColors)
-
-
-function SetColorscheme(scheme)
+-- Function to set colorscheme and update highlights
+local function SetColorscheme(scheme)
 	vim.cmd("colorscheme " .. scheme)
 	updateLineNumberColors()
 end
 
-function ListColorschemes()
-	local themes = {}
-	for _, theme in ipairs(vim.fn.getcompletion('', 'color')) do
-		table.insert(themes, theme)
-	end
-	return themes
+-- Function to list all available colorschemes
+local function ListColorschemes()
+	return vim.fn.getcompletion('', 'color')
 end
 
--- Create SetColorscheme command
-vim.api.nvim_create_user_command('SetColorscheme', function(opts)
-	SetColorscheme(opts.args)
-end, {
-	nargs = 1,
-	complete = function(lead)
-		return vim.fn.getcompletion(lead, 'color')
-	end,
-})
-
--- Create ListColorschemes command
-vim.api.nvim_create_user_command('ListColorschemes', function()
-	local available_themes = ListColorschemes()
-	print("Available colorschemes:")
-	for _, theme in ipairs(available_themes) do
-		print(theme)
-	end
-end, {})
+-- Telescope picker for colorschemes with live preview
+local function PickColorscheme()
+	local themes = ListColorschemes()
+	pickers.new({
+		prompt_title = "Select a Colorscheme",
+		finder = finders.new_table(themes),
+		sorter = conf.generic_sorter({}),
+		layout_strategy = "center", -- Centered floating window
+		layout_config = {
+			width = 0.4,            -- 40% of screen width
+			height = 0.4,           -- 40% of screen height
+		},
+		attach_mappings = function(prompt_bufnr, map)
+			-- Apply the selected colorscheme when pressing Enter
+			actions.select_default:replace(function()
+				actions.close(prompt_bufnr)
+				local selection = action_state.get_selected_entry()
+				if selection then
+					SetColorscheme(selection[1])
+				end
+			end)
+
+			-- Live preview: Change colorscheme as the user moves through options
+			map("i", "<Down>", function()
+				local selection = action_state.get_selected_entry()
+				if selection then
+					SetColorscheme(selection[1])
+				end
+				actions.move_selection_next(prompt_bufnr)
+			end)
+
+			map("i", "<Up>", function()
+				local selection = action_state.get_selected_entry()
+				if selection then
+					SetColorscheme(selection[1])
+				end
+				actions.move_selection_previous(prompt_bufnr)
+			end)
+
+			return true
+		end,
+	}):find()
+end
+
+-- Create a command for opening the colorscheme picker
+vim.api.nvim_create_user_command("PickColorscheme", PickColorscheme, {})
+
+-- Keymap for opening the colorscheme picker
+vim.keymap.set("n", "<leader>pcs", PickColorscheme)