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feat: add slide_to(), to slide the buffer to position #868

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feat: add slide_to(), to slide the buffer to position #868

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1 change: 1 addition & 0 deletions lua/bufferline.lua
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Original file line number Diff line number Diff line change
Expand Up @@ -23,6 +23,7 @@ local api = vim.api
local M = {
move = commands.move,
move_to = commands.move_to,
slide_to = commands.slide_to,
exec = commands.exec,
go_to = commands.go_to,
cycle = commands.cycle,
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22 changes: 21 additions & 1 deletion lua/bufferline/commands.lua
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Original file line number Diff line number Diff line change
Expand Up @@ -155,7 +155,7 @@ function M.move_to(to_index, from_index)
if not index then return utils.notify("Unable to find buffer to move, sorry", "warn") end
-- Calculate next index depending on the sign of `to_index`
local next_index = to_index > 0 and to_index or #state.components + 1 + to_index
if next_index >= 1 and next_index <= #state.components then
if next_index >= 1 and next_index <= #state.components and next_index ~= from_index then
local item = state.components[index]
local destination_buf = state.components[next_index]
state.components[next_index] = item
Expand All @@ -167,6 +167,26 @@ function M.move_to(to_index, from_index)
end
end

--- Slide the buffer at index `from_index` (or current index if not specified) to position `to_index`
--- @param to_index number negative indices are accepted (counting from the right instead of the left, e.g. -1 for the last position, -2 for the second-last, etc.)
--- @param from_index number?
function M.slide_to(to_index, from_index)
-- Calculate next index depending on the sign of `to_index`
local next_index = to_index > 0 and to_index or #state.components + 1 + to_index
if next_index >= 1 and next_index <= #state.components and next_index ~= from_index then
local step = (from_index < next_index and 1) or -1
local from_buf = state.components[from_index]
for cur_index = from_index, next_index - step, step do
state.components[cur_index] = state.components[cur_index + step]
end
state.components[next_index] = from_buf
state.custom_sort = utils.get_ids(state.components)
local opts = config.options
if opts.persist_buffer_sort then utils.save_positions(state.custom_sort) end
ui.refresh()
end
end

--- @param direction number
function M.move(direction)
local index, element = M.get_current_element_index(state)
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