Initial commit of multicursor. Next step is to investigate how multicursor works on various other IDEs and ape those.
This commit is contained in:
Adam Harrison
+89
-35
@@ -46,7 +46,7 @@ end
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function Doc:reset()
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self.lines = { "\n" }
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self.selection = { a = { line=1, col=1 }, b = { line=1, col=1 } }
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self.selections = { 1, 1, 1, 1 }
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self.undo_stack = { idx = 1 }
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self.redo_stack = { idx = 1 }
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self.clean_change_id = 1
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@@ -131,9 +131,20 @@ function Doc:set_selection(line1, col1, line2, col2, swap)
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assert(not line2 == not col2, "expected 2 or 4 arguments")
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if swap then line1, col1, line2, col2 = line2, col2, line1, col1 end
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line1, col1 = self:sanitize_position(line1, col1)
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line2, col2 = self:sanitize_position(line2 or line1, col2 or col1)
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self.selections = { line1, col1, line2, col2 }
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end
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function Doc:set_selections(idx, line1, col1, line2, col2, swap)
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assert(not line2 == not col2, "expected 3 or 5 arguments")
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if swap then line1, col1, line2, col2 = line2, col2, line1, col1 end
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line1, col1 = self:sanitize_position(line1, col1)
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line2, col2 = self:sanitize_position(line2 or line1, col2 or col1)
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self.selection.a.line, self.selection.a.col = line1, col1
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self.selection.b.line, self.selection.b.col = line2, col2
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local target = (idx - 1)*4 + 1
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self.selections[target] = line1
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self.selections[target+1] = col1
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self.selections[target+2] = line2
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self.selections[target+3] = col2
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end
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@@ -147,22 +158,53 @@ end
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function Doc:get_selection(sort)
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local a, b = self.selection.a, self.selection.b
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if sort then
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return sort_positions(a.line, a.col, b.line, b.col)
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return sort_positions(self.selections[1], self.selections[2], self.selections[3], self.selections[4])
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end
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return self.selections[1], self.selections[2], self.selections[3], self.selections[4]
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end
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function Doc:get_selection_count()
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return #self.selections / 4
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end
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function Doc:get_selections(sort)
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local idx = 1
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return function()
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if idx >= #self.selections then
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return
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end
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idx = idx + 4
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if sort then
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return ((idx - 5) / 4) + 1, sort_positions(self.selections[idx - 4], self.selections[idx - 3], self.selections[idx - 2], self.selections[idx - 1])
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else
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return ((idx - 5) / 4) + 1, self.selections[idx - 4], self.selections[idx - 3], self.selections[idx - 2], self.selections[idx - 1]
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end
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end
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return a.line, a.col, b.line, b.col
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end
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function Doc:has_selection()
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local a, b = self.selection.a, self.selection.b
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return not (a.line == b.line and a.col == b.col)
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function Doc:has_selection(idx)
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if idx then
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local target = (idx-1)*4+1
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return
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self.selections[target] ~= self.selections[target+2] or
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self.selections[target+1] ~= self.selections[target+3]
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end
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for target = 1, #self.selections, 4 do
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if self.selections[target] ~= self.selections[target+2] or
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self.selections[target+1] ~= self.selections[target+3] then
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return true
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end
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end
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return false
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end
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function Doc:sanitize_selection()
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self:set_selection(self:get_selection())
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for idx, line1, col1, line2, col2 in self:get_selections() do
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self:set_selections(idx, line1, col1, line2, col2)
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end
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end
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@@ -348,13 +390,16 @@ function Doc:redo()
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end
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function Doc:text_input(text)
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if self:has_selection() then
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self:delete_to()
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function Doc:text_input(text, idx)
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for sidx, line, col in self:get_selections() do
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if not idx or idx == sidx then
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if self:has_selection(sidx) then
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self:delete_to(sidx)
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end
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self:insert(line, col, text)
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self:move_to(sidx, #text)
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end
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end
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local line, col = self:get_selection()
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self:insert(line, col, text)
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self:move_to(#text)
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end
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@@ -380,29 +425,38 @@ function Doc:replace(fn)
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end
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function Doc:delete_to(...)
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local line, col = self:get_selection(true)
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if self:has_selection() then
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self:remove(self:get_selection())
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else
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local line2, col2 = self:position_offset(line, col, ...)
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self:remove(line, col, line2, col2)
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line, col = sort_positions(line, col, line2, col2)
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function Doc:delete_to(idx, ...)
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for sidx, line1, col1, line2, col2 in self:get_selections(true) do
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if not idx or sidx == idx then
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if self:has_selection(sidx) then
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self:remove(line1, col1, line2, col2)
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else
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local l2, c2 = self:position_offset(line, col, ...)
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self:remove(line1, col1, l2, c2)
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line1, col1 = sort_positions(line1, col1, l2, c2)
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end
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self:set_selections(sidx, line1, col1)
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end
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end
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self:set_selection(line, col)
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end
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function Doc:move_to(...)
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local line, col = self:get_selection()
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self:set_selection(self:position_offset(line, col, ...))
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function Doc:move_to(idx, ...)
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for sidx, line, col in self:get_selections() do
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if not idx or sidx == idx then
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self:set_selections(sidx, self:position_offset(line, col, ...))
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end
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end
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end
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function Doc:select_to(...)
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local line, col, line2, col2 = self:get_selection()
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line, col = self:position_offset(line, col, ...)
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self:set_selection(line, col, line2, col2)
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function Doc:select_to(idx, ...)
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for sidx, line, col, line2, col2 in self:get_selections() do
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if not idx or idx == sidx then
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line, col = self:position_offset(line, col, ...)
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self:set_selections(sidx, line, col, line2, col2)
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end
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end
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end
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@@ -439,7 +493,7 @@ end
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-- inserts the appropriate whitespace, as if you typed them normally.
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-- * if you are unindenting, the cursor will jump to the start of the line,
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-- and remove the appropriate amount of spaces (or a tab).
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function Doc:indent_text(unindent, line1, col1, line2, col2, swap)
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function Doc:indent_text(unindent, line1, col1, line2, col2)
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local text = get_indent_string()
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local _, se = self.lines[line1]:find("^[ \t]+")
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local in_beginning_whitespace = col1 == 1 or (se and col1 <= se + 1)
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@@ -455,9 +509,9 @@ function Doc:indent_text(unindent, line1, col1, line2, col2, swap)
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l1d, l2d = #self.lines[line1] - l1d, #self.lines[line2] - l2d
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if (unindent or in_beginning_whitespace) and not self:has_selection() then
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local start_cursor = (se and se + 1 or 1) + l1d or #(self.lines[line1])
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self:set_selection(line1, start_cursor, line2, start_cursor, swap)
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return line1, start_cursor, line2, start_cursor
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else
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self:set_selection(line1, col1 + l1d, line2, col2 + l2d, swap)
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return line1, col1 + l1d, line2, col2 + l2d
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end
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else
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self:text_input(text)
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