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Merge pull request #48 from Alkorin/editor
Rewrite default editor for command line
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,96 @@ | ||
| package main | ||
|
|
||
| import ( | ||
| "github.com/jroimartin/gocui" | ||
| ) | ||
|
|
||
| type HistoryEditor struct { | ||
| history []string | ||
| currentHistoryLine int | ||
| callback func(string) | ||
| } | ||
|
|
||
| func NewHistoryEditor(cb func(string)) *HistoryEditor { | ||
| return &HistoryEditor{ | ||
| history: []string{""}, | ||
| callback: cb, | ||
| } | ||
| } | ||
|
|
||
| func (h *HistoryEditor) Edit(v *gocui.View, key gocui.Key, ch rune, mod gocui.Modifier) { | ||
| switch { | ||
| case ch != 0 && mod == 0: | ||
| v.EditWrite(ch) | ||
| case key == gocui.KeySpace: | ||
| v.EditWrite(' ') | ||
| case key == gocui.KeyBackspace || key == gocui.KeyBackspace2: | ||
| v.EditDelete(true) | ||
| case key == gocui.KeyDelete: | ||
| v.EditDelete(false) | ||
| case key == gocui.KeyInsert: | ||
| v.Overwrite = !v.Overwrite | ||
| case key == gocui.KeyArrowLeft: | ||
| v.MoveCursor(-1, 0, false) | ||
| case key == gocui.KeyArrowRight: | ||
| v.MoveCursor(1, 0, false) | ||
| case key == gocui.KeyHome || key == gocui.KeyCtrlA: | ||
| v.SetCursor(0, 0) | ||
| case key == gocui.KeyEnd || key == gocui.KeyCtrlE: | ||
| v.SetCursor(0, 0) | ||
| if lines := v.BufferLines(); len(lines) == 1 { | ||
| v.MoveCursor(len(lines[0]), 0, true) | ||
| } | ||
| case key == gocui.KeyCtrlK: | ||
| if lines := v.BufferLines(); len(lines) == 1 { | ||
| x, _ := v.Cursor() | ||
| data := lines[0][:x] | ||
| v.Clear() | ||
| v.SetCursor(0, 0) | ||
| v.Write([]byte(data)) | ||
| v.MoveCursor(len(data), 0, true) | ||
| } | ||
| case key == gocui.KeyCtrlU: | ||
| if lines := v.BufferLines(); len(lines) == 1 { | ||
| x, _ := v.Cursor() | ||
| data := lines[0][x:] | ||
| v.Clear() | ||
| v.SetCursor(0, 0) | ||
| v.Write([]byte(data)) | ||
| v.MoveCursor(len(data), 0, true) | ||
| } | ||
| case key == gocui.KeyArrowDown: | ||
| if h.currentHistoryLine < len(h.history)-1 { | ||
| // Save current line | ||
| if lines := v.BufferLines(); len(lines) == 1 { | ||
| h.history[h.currentHistoryLine] = lines[0] | ||
| } | ||
| h.currentHistoryLine++ | ||
| v.Clear() | ||
| v.SetCursor(0, 0) | ||
| v.Write([]byte(h.history[h.currentHistoryLine])) | ||
| v.MoveCursor(len(h.history[h.currentHistoryLine]), 0, true) | ||
| } | ||
| case key == gocui.KeyArrowUp: | ||
| if h.currentHistoryLine > 0 { | ||
| // Save current line | ||
| if lines := v.BufferLines(); len(lines) == 1 { | ||
| h.history[h.currentHistoryLine] = lines[0] | ||
| } | ||
| h.currentHistoryLine-- | ||
| v.Clear() | ||
| v.SetCursor(0, 0) | ||
| v.Write([]byte(h.history[h.currentHistoryLine])) | ||
| v.MoveCursor(len(h.history[h.currentHistoryLine]), 0, true) | ||
| } | ||
| case key == gocui.KeyEnter: | ||
| if lines := v.BufferLines(); len(lines) == 1 { | ||
| line := lines[0] | ||
| h.callback(line) | ||
| h.history[len(h.history)-1] = line | ||
| h.history = append(h.history, "") | ||
| h.currentHistoryLine = len(h.history) - 1 | ||
| v.Clear() | ||
| v.SetCursor(0, 0) | ||
| } | ||
| } | ||
| } |