lite-xl/data/core/commands/doc.lua

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local core = require "core"
local command = require "core.command"
local common = require "core.common"
local config = require "core.config"
local translate = require "core.doc.translate"
local style = require "core.style"
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local DocView = require "core.docview"
local tokenizer = require "core.tokenizer"
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local function doc()
return core.active_view.doc
end
local function doc_multiline_selections(sort)
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local iter, state, idx, line1, col1, line2, col2 = doc():get_selections(sort)
return function()
idx, line1, col1, line2, col2 = iter(state, idx)
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if idx and line2 > line1 and col2 == 1 then
line2 = line2 - 1
col2 = #doc().lines[line2]
end
return idx, line1, col1, line2, col2
end
end
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local function append_line_if_last_line(line)
if line >= #doc().lines then
doc():insert(line, math.huge, "\n")
end
end
local function save(filename)
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local abs_filename
if filename then
filename = core.normalize_to_project_dir(filename)
abs_filename = core.project_absolute_path(filename)
end
local ok, err = pcall(doc().save, doc(), filename, abs_filename)
if ok then
local saved_filename = doc().filename
core.log("Saved \"%s\"", saved_filename)
else
core.error(err)
core.nag_view:show("Saving failed", string.format("Couldn't save file \"%s\". Do you want to save to another location?", doc().filename), {
{ text = "No", default_no = true },
{ text = "Yes", default_yes = true }
}, function(item)
if item.text == "Yes" then
core.add_thread(function()
-- we need to run this in a thread because of the odd way the nagview is.
command.perform("doc:save-as")
end)
end
end)
end
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end
local function cut_or_copy(delete)
local full_text = ""
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local text = ""
core.cursor_clipboard = {}
core.cursor_clipboard_whole_line = {}
for idx, line1, col1, line2, col2 in doc():get_selections(true, true) do
if line1 ~= line2 or col1 ~= col2 then
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text = doc():get_text(line1, col1, line2, col2)
full_text = full_text == "" and text or (text .. " " .. full_text)
core.cursor_clipboard_whole_line[idx] = false
if delete then
doc():delete_to_cursor(idx, 0)
end
else -- Cut/copy whole line
-- Remove newline from the text. It will be added as needed on paste.
text = string.sub(doc().lines[line1], 1, -2)
full_text = full_text == "" and text .. "\n" or (text .. "\n" .. full_text)
core.cursor_clipboard_whole_line[idx] = true
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if delete then
if line1 < #doc().lines then
doc():remove(line1, 1, line1 + 1, 1)
elseif #doc().lines == 1 then
doc():remove(line1, 1, line1, math.huge)
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else
doc():remove(line1 - 1, math.huge, line1, math.huge)
end
doc():set_selections(idx, line1, col1, line2, col2)
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end
end
core.cursor_clipboard[idx] = text
end
if delete then doc():merge_cursors() end
core.cursor_clipboard["full"] = full_text
system.set_clipboard(full_text)
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end
local function split_cursor(direction)
local new_cursors = {}
for _, line1, col1 in doc():get_selections() do
if line1 + direction >= 1 and line1 + direction <= #doc().lines then
table.insert(new_cursors, { line1 + direction, col1 })
end
end
-- add selections in the order that will leave the "last" added one as doc.last_selection
local start, stop = 1, #new_cursors
if direction < 0 then
start, stop = #new_cursors, 1
end
for i = start, stop, direction do
local v = new_cursors[i]
doc():add_selection(v[1], v[2])
end
core.blink_reset()
end
local function set_cursor(dv, x, y, snap_type)
local line, col = dv:resolve_screen_position(x, y)
dv.doc:set_selection(line, col, line, col)
if snap_type == "word" or snap_type == "lines" then
command.perform("doc:select-" .. snap_type)
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end
dv.mouse_selecting = { line, col, snap_type }
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core.blink_reset()
end
local function line_comment(comment, line1, col1, line2, col2)
local start_comment = (type(comment) == 'table' and comment[1] or comment) .. " "
local end_comment = (type(comment) == 'table' and " " .. comment[2])
local uncomment = true
local start_offset = math.huge
for line = line1, line2 do
local text = doc().lines[line]
local s = text:find("%S")
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if s then
local cs, ce = text:find(start_comment, s, true)
if cs ~= s then
uncomment = false
end
start_offset = math.min(start_offset, s)
end
end
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local end_line = col2 == #doc().lines[line2]
for line = line1, line2 do
local text = doc().lines[line]
local s = text:find("%S")
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if s and uncomment then
if end_comment and text:sub(#text - #end_comment, #text - 1) == end_comment then
doc():remove(line, #text - #end_comment, line, #text)
end
local cs, ce = text:find(start_comment, s, true)
if ce then
doc():remove(line, cs, line, ce + 1)
end
elseif s then
doc():insert(line, start_offset, start_comment)
if end_comment then
doc():insert(line, #doc().lines[line], " " .. comment[2])
end
end
end
col1 = col1 + (col1 > start_offset and #start_comment or 0) * (uncomment and -1 or 1)
col2 = col2 + (col2 > start_offset and #start_comment or 0) * (uncomment and -1 or 1)
if end_comment and end_line then
col2 = col2 + #end_comment * (uncomment and -1 or 1)
end
return line1, col1, line2, col2
end
local function block_comment(comment, line1, col1, line2, col2)
-- automatically skip spaces
local word_start = doc():get_text(line1, col1, line1, math.huge):find("%S")
local word_end = doc():get_text(line2, 1, line2, col2):find("%s*$")
col1 = col1 + (word_start and (word_start - 1) or 0)
col2 = word_end and word_end or col2
local block_start = doc():get_text(line1, col1, line1, col1 + #comment[1])
local block_end = doc():get_text(line2, col2 - #comment[2], line2, col2)
if block_start == comment[1] and block_end == comment[2] then
-- remove up to 1 whitespace after the comment
local start_len, stop_len = #comment[1], #comment[2]
if doc():get_text(line1, col1 + #comment[1], line1, col1 + #comment[1] + 1):find("%s$") then
start_len = start_len + 1
end
if doc():get_text(line2, col2 - #comment[2] - 1, line2, col2):find("^%s") then
stop_len = stop_len + 1
end
doc():remove(line1, col1, line1, col1 + start_len)
col2 = col2 - (line1 == line2 and start_len or 0)
doc():remove(line2, col2 - stop_len, line2, col2)
return line1, col1, line2, col2 - stop_len
else
doc():insert(line1, col1, comment[1] .. " ")
col2 = col2 + (line1 == line2 and (#comment[1] + 1) or 0)
doc():insert(line2, col2, " " .. comment[2])
return line1, col1, line2, col2 + #comment[2] + 1
end
end
local function insert_paste(doc, value, whole_line, idx)
if whole_line then
local line1, col1 = doc:get_selection_idx(idx)
doc:insert(line1, 1, value:gsub("\r", "").."\n")
-- Because we're inserting at the start of the line,
-- if the cursor is in the middle of the line
-- it gets carried to the next line along with the old text.
-- If it's at the start of the line it doesn't get carried,
-- so we move it of as many characters as we're adding.
if col1 == 1 then
doc:move_to_cursor(idx, #value+1)
end
else
doc:text_input(value:gsub("\r", ""), idx)
end
end
local commands = {
["doc:select-none"] = function(dv)
local l1, c1 = dv.doc:get_selection_idx(dv.doc.last_selection)
if not l1 then
l1, c1 = dv.doc:get_selection_idx(1)
end
dv.doc:set_selection(l1, c1)
end,
["doc:cut"] = function()
cut_or_copy(true)
end,
["doc:copy"] = function()
cut_or_copy(false)
end,
["doc:undo"] = function(dv)
dv.doc:undo()
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end,
["doc:redo"] = function(dv)
dv.doc:redo()
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end,
["doc:paste"] = function(dv)
local clipboard = system.get_clipboard()
-- If the clipboard has changed since our last look, use that instead
if core.cursor_clipboard["full"] ~= clipboard then
core.cursor_clipboard = {}
core.cursor_clipboard_whole_line = {}
for idx in dv.doc:get_selections() do
insert_paste(dv.doc, clipboard, false, idx)
end
return
end
-- Use internal clipboard(s)
-- If there are mixed whole lines and normal lines, consider them all as normal
local only_whole_lines = true
for _,whole_line in pairs(core.cursor_clipboard_whole_line) do
if not whole_line then
only_whole_lines = false
break
end
end
if #core.cursor_clipboard_whole_line == (#dv.doc.selections/4) then
-- If we have the same number of clipboards and selections,
-- paste each clipboard into its corresponding selection
for idx in dv.doc:get_selections() do
insert_paste(dv.doc, core.cursor_clipboard[idx], only_whole_lines, idx)
end
else
-- Paste every clipboard and add a selection at the end of each one
local new_selections = {}
for idx in dv.doc:get_selections() do
for cb_idx in ipairs(core.cursor_clipboard_whole_line) do
insert_paste(dv.doc, core.cursor_clipboard[cb_idx], only_whole_lines, idx)
if not only_whole_lines then
table.insert(new_selections, {dv.doc:get_selection_idx(idx)})
end
end
if only_whole_lines then
table.insert(new_selections, {dv.doc:get_selection_idx(idx)})
end
end
local first = true
for _,selection in pairs(new_selections) do
if first then
dv.doc:set_selection(table.unpack(selection))
first = false
else
dv.doc:add_selection(table.unpack(selection))
end
end
end
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end,
["doc:newline"] = function(dv)
for idx, line, col in dv.doc:get_selections(false, true) do
local indent = dv.doc.lines[line]:match("^[\t ]*")
if col <= #indent then
indent = indent:sub(#indent + 2 - col)
end
-- Remove current line if it contains only whitespace
if not config.keep_newline_whitespace and dv.doc.lines[line]:match("^%s+$") then
dv.doc:remove(line, 1, line, math.huge)
end
dv.doc:text_input("\n" .. indent, idx)
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end
end,
["doc:newline-below"] = function(dv)
for idx, line in dv.doc:get_selections(false, true) do
local indent = dv.doc.lines[line]:match("^[\t ]*")
dv.doc:insert(line, math.huge, "\n" .. indent)
dv.doc:set_selections(idx, line + 1, math.huge)
end
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end,
["doc:newline-above"] = function(dv)
for idx, line in dv.doc:get_selections(false, true) do
local indent = dv.doc.lines[line]:match("^[\t ]*")
dv.doc:insert(line, 1, indent .. "\n")
dv.doc:set_selections(idx, line, math.huge)
end
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end,
["doc:delete"] = function(dv)
for idx, line1, col1, line2, col2 in dv.doc:get_selections(true, true) do
if line1 == line2 and col1 == col2 and dv.doc.lines[line1]:find("^%s*$", col1) then
dv.doc:remove(line1, col1, line1, math.huge)
end
dv.doc:delete_to_cursor(idx, translate.next_char)
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end
end,
["doc:backspace"] = function(dv)
local _, indent_size = dv.doc:get_indent_info()
for idx, line1, col1, line2, col2 in dv.doc:get_selections(true, true) do
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if line1 == line2 and col1 == col2 then
local text = dv.doc:get_text(line1, 1, line1, col1)
if #text >= indent_size and text:find("^ *$") then
dv.doc:delete_to_cursor(idx, 0, -indent_size)
goto continue
end
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end
dv.doc:delete_to_cursor(idx, translate.previous_char)
::continue::
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end
end,
["doc:select-all"] = function(dv)
dv.doc:set_selection(1, 1, math.huge, math.huge)
-- avoid triggering DocView:scroll_to_make_visible
dv.last_line1 = 1
dv.last_col1 = 1
dv.last_line2 = #dv.doc.lines
dv.last_col2 = #dv.doc.lines[#dv.doc.lines]
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end,
["doc:select-lines"] = function(dv)
for idx, line1, _, line2 in dv.doc:get_selections(true) do
append_line_if_last_line(line2)
dv.doc:set_selections(idx, line2 + 1, 1, line1, 1)
end
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end,
["doc:select-word"] = function(dv)
for idx, line1, col1 in dv.doc:get_selections(true) do
local line1, col1 = translate.start_of_word(dv.doc, line1, col1)
local line2, col2 = translate.end_of_word(dv.doc, line1, col1)
dv.doc:set_selections(idx, line2, col2, line1, col1)
end
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end,
["doc:join-lines"] = function(dv)
for idx, line1, col1, line2, col2 in dv.doc:get_selections(true) do
if line1 == line2 then line2 = line2 + 1 end
local text = dv.doc:get_text(line1, 1, line2, math.huge)
text = text:gsub("(.-)\n[\t ]*", function(x)
return x:find("^%s*$") and x or x .. " "
end)
dv.doc:insert(line1, 1, text)
dv.doc:remove(line1, #text + 1, line2, math.huge)
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if line1 ~= line2 or col1 ~= col2 then
dv.doc:set_selections(idx, line1, math.huge)
end
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end
end,
["doc:indent"] = function(dv)
for idx, line1, col1, line2, col2 in doc_multiline_selections(true) do
local l1, c1, l2, c2 = dv.doc:indent_text(false, line1, col1, line2, col2)
if l1 then
dv.doc:set_selections(idx, l1, c1, l2, c2)
end
end
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end,
["doc:unindent"] = function(dv)
for idx, line1, col1, line2, col2 in doc_multiline_selections(true) do
local l1, c1, l2, c2 = dv.doc:indent_text(true, line1, col1, line2, col2)
if l1 then
dv.doc:set_selections(idx, l1, c1, l2, c2)
end
end
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end,
["doc:duplicate-lines"] = function(dv)
for idx, line1, col1, line2, col2 in doc_multiline_selections(true) do
append_line_if_last_line(line2)
local text = doc():get_text(line1, 1, line2 + 1, 1)
dv.doc:insert(line2 + 1, 1, text)
local n = line2 - line1 + 1
dv.doc:set_selections(idx, line1 + n, col1, line2 + n, col2)
end
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end,
["doc:delete-lines"] = function(dv)
for idx, line1, col1, line2, col2 in doc_multiline_selections(true) do
append_line_if_last_line(line2)
dv.doc:remove(line1, 1, line2 + 1, 1)
dv.doc:set_selections(idx, line1, col1)
end
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end,
["doc:move-lines-up"] = function(dv)
for idx, line1, col1, line2, col2 in doc_multiline_selections(true) do
append_line_if_last_line(line2)
if line1 > 1 then
local text = doc().lines[line1 - 1]
dv.doc:insert(line2 + 1, 1, text)
dv.doc:remove(line1 - 1, 1, line1, 1)
dv.doc:set_selections(idx, line1 - 1, col1, line2 - 1, col2)
end
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end
end,
["doc:move-lines-down"] = function(dv)
for idx, line1, col1, line2, col2 in doc_multiline_selections(true) do
append_line_if_last_line(line2 + 1)
if line2 < #dv.doc.lines then
local text = dv.doc.lines[line2 + 1]
dv.doc:remove(line2 + 1, 1, line2 + 2, 1)
dv.doc:insert(line1, 1, text)
dv.doc:set_selections(idx, line1 + 1, col1, line2 + 1, col2)
end
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end
end,
["doc:toggle-block-comments"] = function(dv)
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for idx, line1, col1, line2, col2 in doc_multiline_selections(true) do
local current_syntax = dv.doc.syntax
if line1 > 1 then
-- Use the previous line state, as it will be the state
-- of the beginning of the current line
local state = dv.doc.highlighter:get_line(line1 - 1).state
local syntaxes = tokenizer.extract_subsyntaxes(dv.doc.syntax, state)
-- Go through all the syntaxes until the first with `block_comment` defined
for _, s in pairs(syntaxes) do
if s.block_comment then
current_syntax = s
break
end
end
end
local comment = current_syntax.block_comment
if not comment then
if dv.doc.syntax.comment then
command.perform "doc:toggle-line-comments"
end
return
end
-- if nothing is selected, toggle the whole line
if line1 == line2 and col1 == col2 then
col1 = 1
col2 = #dv.doc.lines[line2]
end
dv.doc:set_selections(idx, block_comment(comment, line1, col1, line2, col2))
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end
end,
["doc:toggle-line-comments"] = function(dv)
for idx, line1, col1, line2, col2 in doc_multiline_selections(true) do
local current_syntax = dv.doc.syntax
if line1 > 1 then
-- Use the previous line state, as it will be the state
-- of the beginning of the current line
local state = dv.doc.highlighter:get_line(line1 - 1).state
local syntaxes = tokenizer.extract_subsyntaxes(dv.doc.syntax, state)
-- Go through all the syntaxes until the first with comments defined
for _, s in pairs(syntaxes) do
if s.comment or s.block_comment then
current_syntax = s
break
end
end
end
local comment = current_syntax.comment or current_syntax.block_comment
if comment then
dv.doc:set_selections(idx, line_comment(comment, line1, col1, line2, col2))
end
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end
end,
["doc:upper-case"] = function(dv)
dv.doc:replace(string.uupper)
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end,
["doc:lower-case"] = function(dv)
dv.doc:replace(string.ulower)
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end,
["doc:go-to-line"] = function(dv)
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local items
local function init_items()
if items then return end
items = {}
local mt = { __tostring = function(x) return x.text end }
for i, line in ipairs(dv.doc.lines) do
local item = { text = line:sub(1, -2), line = i, info = "line: " .. i }
table.insert(items, setmetatable(item, mt))
end
end
core.command_view:enter("Go To Line", {
submit = function(text, item)
local line = item and item.line or tonumber(text)
if not line then
core.error("Invalid line number or unmatched string")
return
end
dv.doc:set_selection(line, 1 )
dv:scroll_to_line(line, true)
end,
suggest = function(text)
if not text:find("^%d*$") then
init_items()
return common.fuzzy_match(items, text)
end
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end
})
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end,
["doc:toggle-line-ending"] = function(dv)
dv.doc.crlf = not dv.doc.crlf
end,
["doc:toggle-overwrite"] = function(dv)
dv.doc.overwrite = not dv.doc.overwrite
core.blink_reset() -- to show the cursor has changed edit modes
end,
["doc:save-as"] = function(dv)
local last_doc = core.last_active_view and core.last_active_view.doc
local text
if dv.doc.filename then
text = dv.doc.filename
elseif last_doc and last_doc.filename then
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local dirname, filename = core.last_active_view.doc.abs_filename:match("(.*)[/\\](.+)$")
text = core.normalize_to_project_dir(dirname) .. PATHSEP
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end
core.command_view:enter("Save As", {
text = text,
submit = function(filename)
save(common.home_expand(filename))
end,
suggest = function (text)
return common.home_encode_list(common.path_suggest(common.home_expand(text)))
end
})
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end,
["doc:save"] = function(dv)
if dv.doc.filename then
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save()
else
command.perform("doc:save-as")
end
end,
["doc:reload"] = function(dv)
dv.doc:reload()
end,
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["file:rename"] = function(dv)
local old_filename = dv.doc.filename
if not old_filename then
core.error("Cannot rename unsaved doc")
return
end
core.command_view:enter("Rename", {
text = old_filename,
submit = function(filename)
save(common.home_expand(filename))
core.log("Renamed \"%s\" to \"%s\"", old_filename, filename)
if filename ~= old_filename then
os.remove(old_filename)
end
end,
suggest = function (text)
return common.home_encode_list(common.path_suggest(common.home_expand(text)))
end
})
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end,
["file:delete"] = function(dv)
local filename = dv.doc.abs_filename
if not filename then
core.error("Cannot remove unsaved doc")
return
end
for i,docview in ipairs(core.get_views_referencing_doc(dv.doc)) do
local node = core.root_view.root_node:get_node_for_view(docview)
node:close_view(core.root_view.root_node, docview)
end
os.remove(filename)
core.log("Removed \"%s\"", filename)
end,
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["doc:select-to-cursor"] = function(dv, x, y, clicks)
local line1, col1 = select(3, doc():get_selection())
local line2, col2 = dv:resolve_screen_position(x, y)
dv.mouse_selecting = { line1, col1, nil }
dv.doc:set_selection(line2, col2, line1, col1)
end,
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["doc:create-cursor-previous-line"] = function(dv)
split_cursor(-1)
dv.doc:merge_cursors()
end,
["doc:create-cursor-next-line"] = function(dv)
split_cursor(1)
dv.doc:merge_cursors()
end
}
command.add(function(x, y)
if x == nil or y == nil or not core.active_view:extends(DocView) then return false end
local dv = core.active_view
local x1,y1,x2,y2 = dv.position.x, dv.position.y, dv.position.x + dv.size.x, dv.position.y + dv.size.y
return x >= x1 + dv:get_gutter_width() and x < x2 and y >= y1 and y < y2, dv, x, y
end, {
["doc:set-cursor"] = function(dv, x, y)
set_cursor(dv, x, y, "set")
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end,
["doc:set-cursor-word"] = function(dv, x, y)
set_cursor(dv, x, y, "word")
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end,
["doc:set-cursor-line"] = function(dv, x, y, clicks)
set_cursor(dv, x, y, "lines")
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end,
["doc:split-cursor"] = function(dv, x, y, clicks)
local line, col = dv:resolve_screen_position(x, y)
local removal_target = nil
for idx, line1, col1 in dv.doc:get_selections(true) do
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if line1 == line and col1 == col and #doc().selections > 4 then
removal_target = idx
end
end
if removal_target then
dv.doc:remove_selection(removal_target)
else
dv.doc:add_selection(line, col, line, col)
end
dv.mouse_selecting = { line, col, "set" }
end
})
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local translations = {
["previous-char"] = translate,
["next-char"] = translate,
["previous-word-start"] = translate,
["next-word-end"] = translate,
["previous-block-start"] = translate,
["next-block-end"] = translate,
["start-of-doc"] = translate,
["end-of-doc"] = translate,
["start-of-line"] = translate,
["end-of-line"] = translate,
["start-of-word"] = translate,
["start-of-indentation"] = translate,
["end-of-word"] = translate,
["previous-line"] = DocView.translate,
["next-line"] = DocView.translate,
["previous-page"] = DocView.translate,
["next-page"] = DocView.translate,
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}
for name, obj in pairs(translations) do
commands["doc:move-to-" .. name] = function(dv) dv.doc:move_to(obj[name:gsub("-", "_")], dv) end
commands["doc:select-to-" .. name] = function(dv) dv.doc:select_to(obj[name:gsub("-", "_")], dv) end
commands["doc:delete-to-" .. name] = function(dv) dv.doc:delete_to(obj[name:gsub("-", "_")], dv) end
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end
commands["doc:move-to-previous-char"] = function(dv)
for idx, line1, col1, line2, col2 in dv.doc:get_selections(true) do
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if line1 ~= line2 or col1 ~= col2 then
dv.doc:set_selections(idx, line1, col1)
else
dv.doc:move_to_cursor(idx, translate.previous_char)
end
end
dv.doc:merge_cursors()
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end
commands["doc:move-to-next-char"] = function(dv)
for idx, line1, col1, line2, col2 in dv.doc:get_selections(true) do
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if line1 ~= line2 or col1 ~= col2 then
dv.doc:set_selections(idx, line2, col2)
else
dv.doc:move_to_cursor(idx, translate.next_char)
end
end
dv.doc:merge_cursors()
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end
command.add("core.docview", commands)