171 lines
3.2 KiB
Lua
Executable File
171 lines
3.2 KiB
Lua
Executable File
-- mod-version:1 -- lite-xl 1.16
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local core = require "core"
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local common = require "core.common"
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local command = require "core.command"
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local keymap = require "core.keymap"
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local Doc = require "core.doc"
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local DocView = require "core.docview"
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local navigate = {
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list = {},
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current = nil,
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index = 0
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}
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--
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-- Private functions
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--
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local function get_active_view()
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if getmetatable(core.active_view) == DocView then
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return core.active_view
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end
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return nil
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end
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-- Solution to safely remove elements from array table:
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-- found at https://stackoverflow.com/a/53038524
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local function array_remove(t, fnKeep)
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local j, n = 1, #t;
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for i=1, n do
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if (fnKeep(t, i, j)) then
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if (i ~= j) then
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t[j] = t[i];
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t[i] = nil;
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end
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j = j + 1;
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else
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t[i] = nil;
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end
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end
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return t;
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end
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local function add(doc)
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-- Make new navigation point last in list
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if navigate.index > 0 and navigate.index < #navigate.list then
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local remove_start = navigate.index + 1
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local remove_end = #navigate.list
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array_remove(navigate.list, function(_, i)
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if i >= remove_start and i <= remove_end then
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return false
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end
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return true
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end)
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end
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local line, col = doc:get_selection()
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table.insert(navigate.list, {
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filename = doc.filename,
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line = line,
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col = col
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})
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navigate.current = navigate.list[#navigate.list]
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navigate.index = #navigate.list
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end
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local function open_doc(doc)
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core.root_view:open_doc(
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core.open_doc(
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common.home_expand(
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doc.filename
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)
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)
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)
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local av_doc = get_active_view().doc
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local line, col = av_doc:get_selection()
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if doc.line ~= line or doc.col ~= col then
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av_doc:set_selection(doc.line, doc.col, doc.line, doc.col)
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end
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end
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--
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-- Public functions
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--
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function navigate.next()
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if navigate.index < #navigate.list then
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navigate.index = navigate.index + 1
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navigate.current = navigate.list[navigate.index]
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open_doc(navigate.current)
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end
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end
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function navigate.prev()
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if navigate.index > 1 then
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navigate.index = navigate.index - 1
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navigate.current = navigate.list[navigate.index]
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open_doc(navigate.current)
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end
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end
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--
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-- Thread
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--
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core.add_thread(function()
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while true do
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local av = get_active_view()
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if av and av.doc and av.doc.filename then
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local doc = av.doc
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local line, col = doc:get_selection()
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local current = navigate.current
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if
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not current
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or
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current.filename ~= doc.filename
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or
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current.line ~= line
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then
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add(doc)
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else
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current.col = col
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end
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end
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coroutine.yield(0.5)
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end
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end)
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--
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-- Patching
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--
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local doc_on_close = Doc.on_close
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function Doc:on_close()
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local filename = self.filename
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-- remove all positions referencing closed file
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array_remove(navigate.list, function(t, i)
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if t[i].filename == filename then
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return false
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end
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return true
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end)
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doc_on_close(self)
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end
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--
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-- Commands
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--
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command.add("core.docview", {
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["navigate:previous"] = function()
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navigate.prev()
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end,
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["navigate:next"] = function()
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navigate.next()
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end,
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})
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--
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-- Default Keybindings
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--
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keymap.add {
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["alt+left"] = "navigate:previous",
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["alt+right"] = "navigate:next",
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}
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return navigate
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