Manually change the targeted buffer for a given view? (for pinned mode)

[louis-vinchon]

My niche issue

I use the pinned option to keep the symbols view open for a given buffer, but sometimes I would like to manually change which buffer I see the symbols of.

I have played with the API and I haven't found a way to do so other than closing and reopening the view altogether, causing it to flicker.

e.g. Here's a custom symbols toggle function I settled on for now:

local last_outlined_buffer = 0

-- Opens the outline if it's closed.
-- Closes the outline if it's already open for the current buffer.
-- Refreshes the outline to the current buffer otherwise (recreates it from scratch, unfortunately).
local function dynamic_symbols_toggle()
  local trouble = require("trouble")
  local mode = "symbols"

  local is_open = trouble.is_open(mode)
  local current_buffer = vim.api.nvim_win_get_buf(0)

  local function open_symbols()
    last_outlined_buffer = current_buffer
    trouble.open({
      mode = mode,
      pinned = true,
      focus = false,
    })
  end

  if is_open then
    if last_outlined_buffer == current_buffer then
      trouble.close(mode)
    else
      trouble.close(mode)
      open_symbols()
    end
  else
    open_symbols()
  end
end

A mapping:

    {
      "<Leader>oo",
      dynamic_symbols_toggle,
      desc = "Toggle outline",
    }

I played with refresh and toggle_refresh just in case but it didn't work, as expected? I didn't look like this was their intended purpose.

Request

Could we get a builtin way to set the targeted buffer for a given mode?

I guess it may be useful for any of the views, not just the symbols one.

This should give an "in-between" the "free" mode where the view constantly changes whenever you switch buffers, and the currently "pinned" mode where the target buffer is set until the death of the view.