reorganize code

lua/lib/winutils.lua

@@ -0,0 +1,129 @@
+local api = vim.api
+
+local libformat = require 'lib/format'
+local format = libformat.format_tree
+local highlight = libformat.highlight_buffer
+
+local stateutils = require 'lib/state'
+local get_tree = stateutils.get_tree
+
+local confutils = require 'lib/conf'
+local get_buf_name = confutils.get_buf_name
+local get_root_path = confutils.get_root_path
+
+local function get_buf()
+    local BUF_NAME = get_buf_name()
+    local regex = '.*'..BUF_NAME..'$';
+
+    for _, win in pairs(api.nvim_list_wins()) do
+        local buf = api.nvim_win_get_buf(win)
+        local buf_name = api.nvim_buf_get_name(buf)
+
+        if string.match(buf_name, regex) ~= nil then return buf end
+    end
+
+    return nil
+end
+
+local function get_win()
+    local BUF_NAME = get_buf_name()
+    local regex = '.*'..BUF_NAME..'$';
+
+    for _, win in pairs(api.nvim_list_wins()) do
+        local buf_name = api.nvim_buf_get_name(api.nvim_win_get_buf(win))
+        if string.match(buf_name, regex) ~= nil then return win end
+    end
+
+    return nil
+end
+
+local function buf_setup()
+    api.nvim_command('setlocal nonumber norelativenumber winfixwidth winfixheight')
+    api.nvim_command('setlocal winhighlight=EndOfBuffer:LuaTreeEndOfBuffer')
+end
+
+local function open()
+    local BUF_NAME = get_buf_name()
+    local ROOT_PATH = get_root_path()
+    local win_width = 30
+    local options = {
+        bufhidden = 'wipe';
+        buftype = 'nowrite';
+        modifiable = false;
+    }
+
+    local buf = api.nvim_create_buf(false, true)
+    api.nvim_buf_set_name(buf, BUF_NAME)
+
+    for opt, val in pairs(options) do
+        api.nvim_buf_set_option(buf, opt, val)
+    end
+
+    api.nvim_command('topleft '..win_width..'vnew')
+    api.nvim_win_set_buf(0, buf)
+    buf_setup()
+    api.nvim_command('echo "'..ROOT_PATH..'"')
+end
+
+local function close()
+    local BUF_NAME = get_buf_name()
+    local win = get_win(BUF_NAME)
+    if not win then return end
+
+    api.nvim_win_close(win, true)
+end
+
+local function update_view(update_cursor)
+    local BUF_NAME = get_buf_name()
+    local buf = get_buf(BUF_NAME);
+    if not buf then return end
+
+    local cursor = api.nvim_win_get_cursor(0)
+    local tree = get_tree()
+
+    api.nvim_buf_set_option(buf, 'modifiable', true)
+    api.nvim_buf_set_lines(buf, 0, -1, false, format(tree))
+    highlight(buf, tree)
+    api.nvim_buf_set_option(buf, 'modifiable', false)
+
+    if update_cursor == true then
+        api.nvim_win_set_cursor(0, cursor)
+    end
+end
+
+
+local function is_win_open()
+    return get_buf() ~= nil
+end
+
+local function set_mappings()
+    local buf = get_buf()
+    if not buf then return end
+
+    local mappings = {
+        ['<CR>'] = 'open_file("edit")';
+        ['<C-v>'] = 'open_file("vsplit")';
+        ['<C-x>'] = 'open_file("split")';
+        ['<C-[>'] = 'open_file("chdir")';
+        a = 'edit_file("add")';
+        d = 'edit_file("delete")';
+        r = 'edit_file("rename")';
+        f = 'find_file()';
+    }
+
+    for k,v in pairs(mappings) do
+        api.nvim_buf_set_keymap(buf, 'n', k, ':lua require"tree".'..v..'<cr>', {
+            nowait = true, noremap = true, silent = true
+        })
+    end
+end
+
+return {
+    open = open;
+    close = close;
+    is_win_open = is_win_open;
+    update_view = update_view;
+    get_buf = get_buf;
+    get_win = get_win;
+    set_mappings = set_mappings;
+}