feat: sidebars on rhs of editor

lua/cokeline/hover.lua

@@ -39,10 +39,10 @@ function M.get_current(col)
   local cx = rendering.prepare(bufs)
 
   local current_width = 0
-  for _, component in ipairs(cx.sidebar) do
+  for _, component in ipairs(cx.sidebar_left) do
     current_width = current_width + component.width
     if current_width >= col then
-      return component, cx.sidebar
+      return component, cx.sidebar_left
     end
   end
   if
@@ -81,6 +81,12 @@ function M.get_current(col)
       end
     end
   end
+  for _, component in ipairs(cx.sidebar_right) do
+    current_width = current_width + component.width
+    if current_width >= col then
+      return component, cx.sidebar_right
+    end
+  end
 end
 
 local function mouse_leave(hovered)
@@ -89,6 +95,10 @@ local function mouse_leave(hovered)
     cx = buffers.get_buffer(hovered.bufnr)
   elseif hovered.kind == "tab" then
     cx = tabs.get_tabpage(hovered.bufnr)
+  elseif hovered.kind == "sidebar" then
+    cx = { number = hovered.bufnr, side = hovered.sidebar }
+  else
+    cx = {}
   end
   if cx then
     cx.is_hovered = false
@@ -107,6 +117,10 @@ local function mouse_enter(component, current)
     cx = buffers.get_buffer(component.bufnr)
   elseif component.kind == "tab" then
     cx = tabs.get_tabpage(component.bufnr)
+  elseif component.kind == "sidebar" then
+    cx = { number = component.bufnr, side = component.sidebar }
+  else
+    cx = {}
   end
   if cx then
     cx.is_hovered = true

lua/cokeline/rendering.lua

@@ -97,11 +97,12 @@ end
 ---@param visible_buffers  Buffer[]
 ---@return table|string
 local prepare = function(visible_buffers)
-  local sidebar_components = sidebar.get_components()
+  local sidebar_components_l = sidebar.get_components("left")
+  local sidebar_components_r = sidebar.get_components("right")
   local rhs_components = rhs.get_components()
-  local available_width = o.columns - components.width(sidebar_components)
+  local available_width = o.columns - components.width(sidebar_components_l)
   if available_width == 0 then
-    return components.render(sidebar_components)
+    return components.render(sidebar_components_l)
   end
 
   local tab_placement
@@ -113,7 +114,7 @@ local prepare = function(visible_buffers)
     tabs_width = components.width(tab_components)
     available_width = available_width - tabs_width
     if available_width == 0 then
-      return components.render(sidebar_components)
+      return components.render(sidebar_components_l)
         .. components.render(tab_components)
     end
   end
@@ -135,7 +136,8 @@ local prepare = function(visible_buffers)
     end
 
     return {
-      sidebar = sidebar_components,
+      sidebar_left = sidebar_components_l,
+      sidebar_right = sidebar_components_r,
       buffers = current_components,
       rhs = rhs_components,
       tabs = tab_components,
@@ -159,6 +161,7 @@ local prepare = function(visible_buffers)
   }, _G.cokeline.components)
 
   local rhs_width = components.width(rhs_components)
+    + components.width(sidebar_components_r)
   local available_width_left, available_width_right =
     _G.cokeline.config.rendering.slider(
       available_width
@@ -194,7 +197,8 @@ local prepare = function(visible_buffers)
 
   local bufs_width = components.width(buffer_components)
   return {
-    sidebar = sidebar_components,
+    sidebar_left = sidebar_components_l,
+    sidebar_right = sidebar_components_r,
     buffers = buffer_components,
     rhs = rhs_components,
     tabs = tab_components,
@@ -210,7 +214,7 @@ end
 ---@return string
 local render = function(visible_buffers, fill_hl)
   local cx = prepare(visible_buffers)
-  local rendered = components.render(cx.sidebar) .. "%#" .. fill_hl .. "#"
+  local rendered = components.render(cx.sidebar_left) .. "%#" .. fill_hl .. "#"
   if
     _G.cokeline.config.tabs and _G.cokeline.config.tabs.placement == "left"
   then
@@ -228,6 +232,7 @@ local render = function(visible_buffers, fill_hl)
   then
     rendered = rendered .. "%#" .. fill_hl .. "#" .. components.render(cx.tabs)
   end
+  rendered = rendered .. components.render(cx.sidebar_right)
   return rendered
 end
 

lua/cokeline/sidebar.lua

@@ -12,19 +12,13 @@ local bo = vim.bo
 local fn = vim.fn
 local o = vim.o
 
----@return Component<SidebarContext>[]
-local get_components = function()
-  if not _G.cokeline.config.sidebar then
-    return {}
-  end
-
-  local hover = require("cokeline/hover").hovered()
+local get_win = function(side)
   local layout = fn.winlayout()
 
   -- If the first split level is not given by vertically split windows we
   -- return early.
   if layout[1] ~= "row" then
-    return {}
+    return nil
   end
 
   -- The second element of the `layout` table is a nested list representing the
@@ -48,16 +42,45 @@ local get_components = function()
   --
   -- However, with edgy.nvim, a sidebar can contain multiple splits nested one level in.
   -- So if the first window found is a leaf, we check the first window of the container.
-  local first_split = window_tree[1]
-  local winid = first_split[2]
-  if first_split[1] ~= "leaf" then
-    local win = first_split[2][1]
-    if win and win[1] == "leaf" then
-      winid = win[2]
-    else
-      return {}
+  local first_split
+  local winid
+  if side == nil or side == "left" then
+    first_split = window_tree[1]
+    winid = first_split[2]
+    if first_split[1] ~= "leaf" then
+      local win = first_split[2][1]
+      if win and win[1] == "leaf" then
+        winid = win[2]
+      else
+        return nil
+      end
+    end
+  else
+    first_split = window_tree[#window_tree]
+    winid = first_split[2]
+    if first_split[1] ~= "leaf" then
+      local win = first_split[2][#first_split[2]]
+      if win and win[1] == "leaf" then
+        winid = win[2]
+      else
+        return nil
+      end
     end
   end
+  return winid
+end
+
+---@param side "left" | "right"
+---@return Component<SidebarContext>[]
+local get_components = function(side)
+  if not _G.cokeline.config.sidebar then
+    return {}
+  end
+
+  local winid = get_win(side)
+  if not winid then
+    return {}
+  end
 
   local bufnr = api.nvim_win_get_buf(winid)
 
@@ -85,8 +108,12 @@ local get_components = function()
   local sidebar_components = {}
   local width = 0
   local id = #_G.cokeline.components + #_G.cokeline.rhs + 1
+  local hover = require("cokeline/hover").hovered()
   for _, c in ipairs(_G.cokeline.sidebar) do
-    buffer.is_hovered = hover and hover.index == id
+    c.sidebar = side
+    buffer.is_hovered = hover ~= nil
+      and hover.index == id
+      and hover.bufnr == buffer.number
     local component = c:render(RenderContext:buffer(buffer))
     buffer.is_hovered = false
     -- We need at least one component, otherwise we can't add padding to the
@@ -117,5 +144,6 @@ local get_components = function()
 end
 
 return {
+  get_win = get_win,
   get_components = get_components,
 }