huncholaneA Neovim plugin enabling you to solve LeetCode problems.
| 1 | local Group = require("leetcode-ui.group") |
| 2 | local config = require("leetcode.config") |
| 3 | local keys = config.user.keys |
| 4 | |
| 5 | local log = require("leetcode.logger") |
| 6 | |
| 7 | ---@class lc.on_press |
| 8 | ---@field fn function |
| 9 | ---@field sc string |
| 10 | |
| 11 | ---@class lc-ui.Layout._ |
| 12 | ---@field line_idx integer |
| 13 | ---@field buttons lc.ui.Button[] |
| 14 | ---@field opts lc.ui.opts |
| 15 | ---@field keymaps table[] |
| 16 | |
| 17 | ---@class lc.ui.Renderer : lc.ui.Group |
| 18 | ---@field bufnr integer |
| 19 | ---@field winid integer |
| 20 | ---@field _ lc-ui.Layout._ | lc.ui.Group.params |
| 21 | local Renderer = Group:extend("LeetRenderer") |
| 22 | |
| 23 | |
| 24 | self.bufnr = component.bufnr |
| 25 | self.winid = component.winid |
| 26 | |
| 27 | if not (self.bufnr and vim.api.nvim_buf_is_valid(self.bufnr)) then |
| 28 | return |
| 29 | end |
| 30 | |
| 31 | self:map("n", keys.confirm, function() |
| 32 | self:handle_press() |
| 33 | end) |
| 34 | |
| 35 | self:clear_keymaps() |
| 36 | self._.buttons = {} |
| 37 | self._.line_idx = 1 |
| 38 | |
| 39 | local c_ok, c = pcall(vim.api.nvim_win_get_cursor, self.winid) |
| 40 | self:with_modifiable(function() |
| 41 | vim.api.nvim_buf_set_lines(self.bufnr, 0, -1, false, {}) |
| 42 | vim.api.nvim_buf_clear_namespace(self.bufnr, -1, 0, -1) |
| 43 | |
| 44 | Renderer.super.draw(self, self, self._.opts) |
| 45 | end) |
| 46 | if c_ok then |
| 47 | pcall(vim.api.nvim_win_set_cursor, self.winid, c) |
| 48 | end |
| 49 | end |
| 50 | |
| 51 | ---@private |
| 52 | --- |
| 53 | ---@param fn function |
| 54 | |
| 55 | local bufnr = self.bufnr |
| 56 | if not (bufnr and vim.api.nvim_buf_is_valid(bufnr)) then |
| 57 | return |
| 58 | end |
| 59 | |
| 60 | local modi = vim.api.nvim_buf_get_option(bufnr, "modifiable") |
| 61 | if not modi then |
| 62 | vim.api.nvim_buf_set_option(bufnr, "modifiable", true) |
| 63 | end |
| 64 | fn() |
| 65 | if not modi then |
| 66 | vim.api.nvim_buf_set_option(bufnr, "modifiable", false) |
| 67 | end |
| 68 | end |
| 69 | |
| 70 | -- |
| 71 | if not self.bufnr then |
| 72 | return |
| 73 | end |
| 74 | if type(key) == "number" then |
| 75 | key = tostring(key) |
| 76 | end |
| 77 | |
| 78 | if type(key) == "table" then |
| 79 | for _, k in ipairs(key) do |
| 80 | self:map(mode, k, handler, opts) |
| 81 | end |
| 82 | elseif type(key) == "string" then |
| 83 | local options = |
| 84 | vim.tbl_deep_extend("force", { buffer = self.bufnr, clearable = false }, opts or {}) |
| 85 | |
| 86 | local clearable = options.clearable |
| 87 | options.clearable = nil |
| 88 | |
| 89 | if clearable then |
| 90 | self._.keymaps[key] = mode |
| 91 | end |
| 92 | |
| 93 | vim.keymap.set(mode, key, handler, options) |
| 94 | end |
| 95 | end |
| 96 | |
| 97 | -- |
| 98 | pcall(vim.api.nvim_buf_del_keymap, self.bufnr, mode, key) |
| 99 | end |
| 100 | |
| 101 | |
| 102 | for key, mode in pairs(self._.keymaps) do |
| 103 | self:unmap(mode, key) |
| 104 | end |
| 105 | |
| 106 | self._.keymaps = {} |
| 107 | end |
| 108 | |
| 109 | |
| 110 | Renderer.super.clear(self) |
| 111 | |
| 112 | self._.line_idx = 1 |
| 113 | self._.buttons = {} |
| 114 | self:clear_keymaps() |
| 115 | self:with_modifiable(function() |
| 116 | vim.api.nvim_buf_set_lines(self.bufnr, 0, -1, false, {}) |
| 117 | end) |
| 118 | end |
| 119 | |
| 120 | ---@param val? integer Optional value to increment line index by |
| 121 | |
| 122 | local line_idx = self._.line_idx |
| 123 | self._.line_idx = self._.line_idx + (val or 0) |
| 124 | return line_idx |
| 125 | end |
| 126 | |
| 127 | ---@param line_idx? integer The line that the press happened |
| 128 | |
| 129 | local |
| 130 | vim.api.nvim_feedkeys(vim.api.nvim_replace_termcodes("<cr>", true, false, true), "n", true) |
| 131 | end |
| 132 | |
| 133 | if not self.bufnr or not self.winid then |
| 134 | feedenter() |
| 135 | end |
| 136 | if not line_idx and not vim.api.nvim_win_is_valid(self.winid) then |
| 137 | return feedenter() |
| 138 | end |
| 139 | |
| 140 | line_idx = line_idx or vim.api.nvim_win_get_cursor(self.winid)[1] |
| 141 | |
| 142 | if not self._.buttons[line_idx] then |
| 143 | return feedenter() |
| 144 | end |
| 145 | |
| 146 | local ok, err = pcall(function() |
| 147 | self._.buttons[line_idx]:press() |
| 148 | end) |
| 149 | if not ok then |
| 150 | log.error(err) |
| 151 | end |
| 152 | end |
| 153 | |
| 154 | ---@param button lc.ui.Button |
| 155 | -- |
| 156 | local line_idx = self._.line_idx |
| 157 | |
| 158 | for i = 1, #button:contents() do |
| 159 | self._.buttons[line_idx + i - 1] = button |
| 160 | end |
| 161 | end |
| 162 | |
| 163 | ---@param layout lc.ui.Renderer |
| 164 | |
| 165 | self._.items = layout._.items |
| 166 | end |
| 167 | |
| 168 | ---@param components lc.ui.Lines[] |
| 169 | ---@param opts? lc.ui.opts |
| 170 | |
| 171 | Renderer.super.init(self, components or {}, opts or {}) |
| 172 | |
| 173 | self._.line_idx = 1 |
| 174 | self._.buttons = {} |
| 175 | self._.keymaps = {} |
| 176 | end |
| 177 | |
| 178 | ---@type fun(components?: table[], opts?: lc.ui.opts): lc.ui.Renderer |
| 179 | local LeetRenderer = Renderer |
| 180 | |
| 181 | return LeetRenderer |