feat: Api to go to first and last items (#157)

README.md

@@ -210,6 +210,12 @@ require("trouble").next({skip_groups = true, jump = true});
 
 -- jump to the previous item, skipping the groups
 require("trouble").previous({skip_groups = true, jump = true});
+
+-- jump to the first item, skipping the groups
+require("trouble").first({skip_groups = true, jump = true});
+
+-- jump to the last item, skipping the groups
+require("trouble").last({skip_groups = true, jump = true});
 ```
 
 ### Telescope

lua/trouble/init.lua

@@ -206,6 +206,14 @@ function Trouble.action(action)
     view:previous_item()
     return Trouble
   end
+  if action == "first" then
+    view:first_item()
+    return Trouble
+  end
+  if action == "last" then
+    view:last_item()
+    return Trouble
+  end
 
   if action == "toggle_preview" then
     config.options.auto_preview = not config.options.auto_preview
@@ -242,6 +250,20 @@ function Trouble.previous(opts)
   end
 end
 
+function Trouble.first(opts)
+  util.fix_mode(opts)
+  if view then
+    view:first_item(opts)
+  end
+end
+
+function Trouble.last(opts)
+  util.fix_mode(opts)
+  if view then
+    view:last_item(opts)
+  end
+end
+
 function Trouble.get_items()
   if view ~= nil then
     return view.items

lua/trouble/view.lua

@@ -376,8 +376,8 @@ end
 
 function View:next_item(opts)
   opts = opts or { skip_groups = false }
-  local line = self:get_line()
-  for i = line + 1, vim.api.nvim_buf_line_count(self.buf), 1 do
+  local line = opts.first and 0 or self:get_line() + 1
+  for i = line, vim.api.nvim_buf_line_count(self.buf), 1 do
     if self.items[i] and not (opts.skip_groups and self.items[i].is_file) then
       vim.api.nvim_win_set_cursor(self.win, { i, self:get_col() })
       if opts.jump then
@@ -390,8 +390,8 @@ end
 
 function View:previous_item(opts)
   opts = opts or { skip_groups = false }
-  local line = self:get_line()
-  for i = line - 1, 0, -1 do
+  local line = opts.last and vim.api.nvim_buf_line_count(self.buf) or self:get_line() - 1
+  for i = line, 0, -1 do
     if self.items[i] and not (opts.skip_groups and self.items[i].is_file) then
       vim.api.nvim_win_set_cursor(self.win, { i, self:get_col() })
       if opts.jump then
@@ -402,6 +402,18 @@ function View:previous_item(opts)
   end
 end
 
+function View:first_item(opts)
+  opts = opts or {}
+  opts.first = true
+  return self:next_item(opts)
+end
+
+function View:last_item(opts)
+  opts = opts or {}
+  opts.last = true
+  return self:previous_item(opts)
+end
+
 function View:hover(opts)
   opts = opts or {}
   local item = opts.item or self:current_item()