Implements different modes for list items editing (#2)

This commit adds additional mappings for list editing modes switching.

In item editing mode the navigation keys are mapped for item navigation
while in normal mode navigation mappings are disabled.

Author: aserebryakov

plugin/vim-todo-lists.vim

@@ -28,11 +28,29 @@ function! VimTodoListsInit()
   setlocal shiftwidth=2 expandtab
   setlocal cursorline
   setlocal noautoindent
+  call VimTodoListsSetItemMode()
+endfunction
+
+
+" Sets mapping for normal navigation and editing mode
+function! VimTodoListsSetNormalMode()
+  nunmap <buffer> o
+  nunmap <buffer> O
+  nunmap <buffer> j
+  nunmap <buffer> k
+  nnoremap <buffer> <Space> :silent call VimTodoListsToggleItem()<CR>
+  noremap <buffer> <leader>e :silent call VimTodoListsSetItemMode()<CR>
+endfunction
+
+
+" Sets mappings for faster item navigation and editing
+function! VimTodoListsSetItemMode()
   nnoremap <buffer> o o  [ ] 
   nnoremap <buffer> O O  [ ] 
   nnoremap <buffer> j $/^  \[.\]<CR>:noh<CR> f f 
   nnoremap <buffer> k 0?^  \[.\]<CR>:noh<CR> f f 
   nnoremap <buffer> <Space> :silent call VimTodoListsToggleItem()<CR>
+  noremap <buffer> <leader>e :silent call VimTodoListsSetNormalMode()<CR>
   inoremap <buffer> <CR> <CR>  [ ] 
 endfunction