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Feature: add MoveLinesUp (Alt + Up) and MoveLinesDown (Alt + Down) actions

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This commit is contained in:
Saeed Rasooli
2016-10-11 23:05:41 +03:30
parent 0e4f700527
commit c1dd403ab9
3 changed files with 108 additions and 0 deletions
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25
cmd/micro/lineArray.go
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@@ -132,6 +132,31 @@ func (la *LineArray) DeleteByte(pos Loc) {
la.lines[pos.Y] = la.lines[pos.Y][:pos.X+copy(la.lines[pos.Y][pos.X:], la.lines[pos.Y][pos.X+1:])]
}
func (la *LineArray) MoveLinesUp(y0 int, y1 int) {
// 0 < y0 < y1 <= len(la.lines)
if y0 < 1 || y0 >= y1 || y1 > len(la.lines) {
return // what to do? FIXME
}
before := la.lines[y0-1]
for y := y0 ; y < y1 ; y ++ {
la.lines[y-1] = la.lines[y]
}
la.lines[y1-1] = before
}
func (la *LineArray) MoveLinesDown(y0 int, y1 int) {
// 0 <= y0 < y1 < len(la.lines)
if y0 < 0 || y0 >= y1 || y1 >= len(la.lines) {
return // what to do? FIXME
}
after := la.lines[y1]
for y := y1-1 ; y >= y0 ; y -- {
la.lines[y+1] = la.lines[y]
}
la.lines[y0] = after
}
// Substr returns the string representation between two locations
func (la *LineArray) Substr(start, end Loc) string {
startX := runeToByteIndex(start.X, la.lines[start.Y])