From 71b231bb242383cc27cb3af19854ec0812db9404 Mon Sep 17 00:00:00 2001
From: amrbashir <amr.bashir2015@gmail.com>
Date: Fri, 13 May 2022 17:38:49 +0200
Subject: [PATCH] init

---
 README.md            | 22 +++++++++++++++++
 lua/docs_view.lua    | 59 ++++++++++++++++++++++++++++++++++++++++++++
 plugin/docs_view.vim |  7 ++++++
 3 files changed, 88 insertions(+)
 create mode 100644 README.md
 create mode 100644 lua/docs_view.lua
 create mode 100644 plugin/docs_view.vim

diff --git a/README.md b/README.md
new file mode 100644
index 0000000..d606c3e
--- /dev/null
+++ b/README.md
@@ -0,0 +1,22 @@
+# nvim-docs-view
+
+A neovim plugin to display lsp hover documentation in a side panel.
+> Inspired by the VSCode extension [Docs View](https://marketplace.visualstudio.com/items?itemName=bierner.docs-view).
+
+### Installation
+
+Using [vim-plug](https://github.com/junegunn/vim-plug)
+
+```viml
+Plug 'amrbashir/nvim-docs-view'
+```
+
+Using [packer.nvim](https://github.com/wbthomason/packer.nvim)
+
+```lua
+use { 'amrbashir/nvim-docs-view' }
+```
+
+### Usage
+
+Use `:DocsViewOpen` to open the docs view side panel
diff --git a/lua/docs_view.lua b/lua/docs_view.lua
new file mode 100644
index 0000000..81394fc
--- /dev/null
+++ b/lua/docs_view.lua
@@ -0,0 +1,59 @@
+local buf, win, start_win
+local api = vim.api
+local lsp = vim.lsp
+
+local function split(s, delimiter)
+    result = {};
+    for match in (s..delimiter):gmatch("(.-)"..delimiter) do
+        table.insert(result, match);
+    end
+    return result;
+end
+
+local function open()
+  if win and api.nvim_win_is_valid(win) then return end
+
+  start_win = api.nvim_get_current_win()
+
+  api.nvim_command("botright vnew")
+
+  win = api.nvim_get_current_win()
+  buf = api.nvim_get_current_buf()
+
+  api.nvim_buf_set_name(buf, "Docs View")
+  api.nvim_buf_set_option(buf, "buftype", "nofile")
+  api.nvim_buf_set_option(buf, "swapfile", false)
+  api.nvim_buf_set_option(buf, "bufhidden", "wipe")
+  api.nvim_buf_set_option(buf, "filetype", "nvim-docs-view")
+
+  -- api.nvim_win_set_option(win, "wrap", false)
+  
+  api.nvim_set_current_win(start_win)
+
+  api.nvim_create_autocmd(
+    { "CursorHold" },
+    { pattern = "*", callback = function()
+        local l,c = unpack(api.nvim_win_get_cursor(0))
+        lsp.buf_request(0, "textDocument/hover", { 
+            textDocument = { uri = "file://"..api.nvim_buf_get_name(0) },
+            position = { line = l - 1, character = c }
+        }, function(err, result, ctx, config)
+            if not (result and result.contents) then return end
+
+            local md_lines = lsp.util.convert_input_to_markdown_lines(result.contents)
+            md_lines = lsp.util.trim_empty_lines(md_lines)
+            if vim.tbl_isempty(md_lines) then return end
+         
+            api.nvim_buf_set_option(buf, "modifiable", true)
+            lsp.util.stylize_markdown(buf, md_lines)
+            api.nvim_buf_set_option(buf, "modifiable", false)
+          end
+        )
+      end
+    }
+  )
+end
+
+return {
+  open = open
+}
diff --git a/plugin/docs_view.vim b/plugin/docs_view.vim
new file mode 100644
index 0000000..bbe1447
--- /dev/null
+++ b/plugin/docs_view.vim
@@ -0,0 +1,7 @@
+if exists('g:loaded_docs_view')
+  finish
+endif
+let g:loaded_docs_view = 1
+
+command! DocsViewOpen lua require'docs_view'.open()
+