internal/action/bufpane.go

   1 package action
   2
   3 import (
   4         "strings"
   5         "time"
   6
   7         luar "layeh.com/gopher-luar"
   8
   9         lua "github.com/yuin/gopher-lua"
  10         "github.com/zyedidia/micro/v2/internal/buffer"
  11         "github.com/zyedidia/micro/v2/internal/clipboard"
  12         "github.com/zyedidia/micro/v2/internal/config"
  13         "github.com/zyedidia/micro/v2/internal/display"
  14         ulua "github.com/zyedidia/micro/v2/internal/lua"
  15         "github.com/zyedidia/micro/v2/internal/screen"
  16         "github.com/zyedidia/tcell/v2"
  17 )
  18
  19 type BufKeyAction func(*BufPane) bool
  20 type BufMouseAction func(*BufPane, *tcell.EventMouse) bool
  21
  22 var BufBindings *KeyTree
  23
  24 func BufKeyActionGeneral(a BufKeyAction) PaneKeyAction {
  25         return func(p Pane) bool {
  26                 return a(p.(*BufPane))
  27         }
  28 }
  29
  30 func BufMouseActionGeneral(a BufMouseAction) PaneMouseAction {
  31         return func(p Pane, me *tcell.EventMouse) bool {
  32                 return a(p.(*BufPane), me)
  33         }
  34 }
  35
  36 func init() {
  37         BufBindings = NewKeyTree()
  38 }
  39
  40 func LuaAction(fn string) func(*BufPane) bool {
  41         luaFn := strings.Split(fn, ".")
  42         if len(luaFn) <= 1 {
  43                 return nil
  44         }
  45         plName, plFn := luaFn[0], luaFn[1]
  46         pl := config.FindPlugin(plName)
  47         if pl == nil {
  48                 return nil
  49         }
  50         return func(h *BufPane) bool {
  51                 val, err := pl.Call(plFn, luar.New(ulua.L, h))
  52                 if err != nil {
  53                         screen.TermMessage(err)
  54                 }
  55                 if v, ok := val.(lua.LBool); !ok {
  56                         return false
  57                 } else {
  58                         return bool(v)
  59                 }
  60         }
  61 }
  62
  63 // BufMapKey maps an event to an action
  64 func BufMapEvent(k Event, action string) {
  65         config.Bindings["buffer"][k.Name()] = action
  66
  67         switch e := k.(type) {
  68         case KeyEvent, KeySequenceEvent, RawEvent:
  69                 bufMapKey(e, action)
  70         case MouseEvent:
  71                 bufMapMouse(e, action)
  72         }
  73 }
  74
  75 func bufMapKey(k Event, action string) {
  76         var actionfns []func(*BufPane) bool
  77         var names []string
  78         var types []byte
  79         for i := 0; ; i++ {
  80                 if action == "" {
  81                         break
  82                 }
  83
  84                 // TODO: fix problem when complex bindings have these
  85                 // characters (escape them?)
  86                 idx := strings.IndexAny(action, "&|,")
  87                 a := action
  88                 if idx >= 0 {
  89                         a = action[:idx]
  90                         types = append(types, action[idx])
  91                         action = action[idx+1:]
  92                 } else {
  93                         types = append(types, ' ')
  94                         action = ""
  95                 }
  96
  97                 var afn func(*BufPane) bool
  98                 if strings.HasPrefix(a, "command:") {
  99                         a = strings.SplitN(a, ":", 2)[1]
 100                         afn = CommandAction(a)
 101                         names = append(names, "")
 102                 } else if strings.HasPrefix(a, "command-edit:") {
 103                         a = strings.SplitN(a, ":", 2)[1]
 104                         afn = CommandEditAction(a)
 105                         names = append(names, "")
 106                 } else if strings.HasPrefix(a, "lua:") {
 107                         a = strings.SplitN(a, ":", 2)[1]
 108                         afn = LuaAction(a)
 109                         if afn == nil {
 110                                 screen.TermMessage("Lua Error:", a, "does not exist")
 111                                 continue
 112                         }
 113                         split := strings.SplitN(a, ".", 2)
 114                         if len(split) > 1 {
 115                                 a = strings.Title(split[0]) + strings.Title(split[1])
 116                         } else {
 117                                 a = strings.Title(a)
 118                         }
 119
 120                         names = append(names, a)
 121                 } else if f, ok := BufKeyActions[a]; ok {
 122                         afn = f
 123                         names = append(names, a)
 124                 } else {
 125                         screen.TermMessage("Error in bindings: action", a, "does not exist")
 126                         continue
 127                 }
 128                 actionfns = append(actionfns, afn)
 129         }
 130         bufAction := func(h *BufPane) bool {
 131                 cursors := h.Buf.GetCursors()
 132                 success := true
 133                 for i, a := range actionfns {
 134                         innerSuccess := true
 135                         for j, c := range cursors {
 136                                 if c == nil {
 137                                         continue
 138                                 }
 139                                 h.Buf.SetCurCursor(c.Num)
 140                                 h.Cursor = c
 141                                 if i == 0 || (success && types[i-1] == '&') || (!success && types[i-1] == '|') || (types[i-1] == ',') {
 142                                         innerSuccess = innerSuccess && h.execAction(a, names[i], j)
 143                                 } else {
 144                                         break
 145                                 }
 146                         }
 147                         // if the action changed the current pane, update the reference
 148                         h = MainTab().CurPane()
 149                         success = innerSuccess
 150                 }
 151                 return true
 152         }
 153
 154         BufBindings.RegisterKeyBinding(k, BufKeyActionGeneral(bufAction))
 155 }
 156
 157 // BufMapMouse maps a mouse event to an action
 158 func bufMapMouse(k MouseEvent, action string) {
 159         if f, ok := BufMouseActions[action]; ok {
 160                 BufBindings.RegisterMouseBinding(k, BufMouseActionGeneral(f))
 161         } else {
 162                 // TODO
 163                 // delete(BufMouseBindings, k)
 164                 bufMapKey(k, action)
 165         }
 166 }
 167
 168 // BufUnmap unmaps a key or mouse event from any action
 169 func BufUnmap(k Event) {
 170         // TODO
 171         // delete(BufKeyBindings, k)
 172         //
 173         // switch e := k.(type) {
 174         // case MouseEvent:
 175         //      delete(BufMouseBindings, e)
 176         // }
 177 }
 178
 179 // The BufPane connects the buffer and the window
 180 // It provides a cursor (or multiple) and defines a set of actions
 181 // that can be taken on the buffer
 182 // The ActionHandler can access the window for necessary info about
 183 // visual positions for mouse clicks and scrolling
 184 type BufPane struct {
 185         display.BWindow
 186
 187         // Buf is the buffer this BufPane views
 188         Buf *buffer.Buffer
 189         // Bindings stores the association of key events and actions
 190         bindings *KeyTree
 191
 192         // Cursor is the currently active buffer cursor
 193         Cursor *buffer.Cursor
 194
 195         // Since tcell doesn't differentiate between a mouse release event
 196         // and a mouse move event with no keys pressed, we need to keep
 197         // track of whether or not the mouse was pressed (or not released) last event to determine
 198         // mouse release events
 199         mouseReleased bool
 200
 201         // We need to keep track of insert key press toggle
 202         isOverwriteMode bool
 203         // This stores when the last click was
 204         // This is useful for detecting double and triple clicks
 205         lastClickTime time.Time
 206         lastLoc       buffer.Loc
 207
 208         // lastCutTime stores when the last ctrl+k was issued.
 209         // It is used for clearing the clipboard to replace it with fresh cut lines.
 210         lastCutTime time.Time
 211
 212         // freshClip returns true if the clipboard has never been pasted.
 213         freshClip bool
 214
 215         // Was the last mouse event actually a double click?
 216         // Useful for detecting triple clicks -- if a double click is detected
 217         // but the last mouse event was actually a double click, it's a triple click
 218         doubleClick bool
 219         // Same here, just to keep track for mouse move events
 220         tripleClick bool
 221
 222         // Last search stores the last successful search for FindNext and FindPrev
 223         lastSearch      string
 224         lastSearchRegex bool
 225         // Should the current multiple cursor selection search based on word or
 226         // based on selection (false for selection, true for word)
 227         multiWord bool
 228
 229         splitID uint64
 230         tab     *Tab
 231
 232         // remember original location of a search in case the search is canceled
 233         searchOrig buffer.Loc
 234 }
 235
 236 func NewBufPane(buf *buffer.Buffer, win display.BWindow, tab *Tab) *BufPane {
 237         h := new(BufPane)
 238         h.Buf = buf
 239         h.BWindow = win
 240         h.tab = tab
 241
 242         h.Cursor = h.Buf.GetActiveCursor()
 243         h.mouseReleased = true
 244
 245         config.RunPluginFn("onBufPaneOpen", luar.New(ulua.L, h))
 246
 247         return h
 248 }
 249
 250 func NewBufPaneFromBuf(buf *buffer.Buffer, tab *Tab) *BufPane {
 251         w := display.NewBufWindow(0, 0, 0, 0, buf)
 252         return NewBufPane(buf, w, tab)
 253 }
 254
 255 func (h *BufPane) SetTab(t *Tab) {
 256         h.tab = t
 257 }
 258
 259 func (h *BufPane) Tab() *Tab {
 260         return h.tab
 261 }
 262
 263 func (h *BufPane) ResizePane(size int) {
 264         n := h.tab.GetNode(h.splitID)
 265         n.ResizeSplit(size)
 266         h.tab.Resize()
 267 }
 268
 269 // PluginCB calls all plugin callbacks with a certain name and
 270 // displays an error if there is one and returns the aggregrate
 271 // boolean response
 272 func (h *BufPane) PluginCB(cb string) bool {
 273         b, err := config.RunPluginFnBool(cb, luar.New(ulua.L, h))
 274         if err != nil {
 275                 screen.TermMessage(err)
 276         }
 277         return b
 278 }
 279
 280 // PluginCBRune is the same as PluginCB but also passes a rune to
 281 // the plugins
 282 func (h *BufPane) PluginCBRune(cb string, r rune) bool {
 283         b, err := config.RunPluginFnBool(cb, luar.New(ulua.L, h), luar.New(ulua.L, string(r)))
 284         if err != nil {
 285                 screen.TermMessage(err)
 286         }
 287         return b
 288 }
 289
 290 func (h *BufPane) OpenBuffer(b *buffer.Buffer) {
 291         h.Buf.Close()
 292         h.Buf = b
 293         h.BWindow.SetBuffer(b)
 294         h.Cursor = b.GetActiveCursor()
 295         h.Resize(h.GetView().Width, h.GetView().Height)
 296         h.Relocate()
 297         // Set mouseReleased to true because we assume the mouse is not being pressed when
 298         // the editor is opened
 299         h.mouseReleased = true
 300         // Set isOverwriteMode to false, because we assume we are in the default mode when editor
 301         // is opened
 302         h.isOverwriteMode = false
 303         h.lastClickTime = time.Time{}
 304 }
 305
 306 func (h *BufPane) ID() uint64 {
 307         return h.splitID
 308 }
 309
 310 func (h *BufPane) SetID(i uint64) {
 311         h.splitID = i
 312 }
 313
 314 func (h *BufPane) Name() string {
 315         n := h.Buf.GetName()
 316         if h.Buf.Modified() {
 317                 n += " +"
 318         }
 319         return n
 320 }
 321
 322 // HandleEvent executes the tcell event properly
 323 func (h *BufPane) HandleEvent(event tcell.Event) {
 324         if h.Buf.ExternallyModified() && !h.Buf.ReloadDisabled {
 325                 InfoBar.YNPrompt("The file on disk has changed. Reload file? (y,n,esc)", func(yes, canceled bool) {
 326                         if canceled {
 327                                 h.Buf.DisableReload()
 328                         }
 329                         if !yes || canceled {
 330                                 h.Buf.UpdateModTime()
 331                         } else {
 332                                 h.Buf.ReOpen()
 333                         }
 334                 })
 335
 336         }
 337
 338         switch e := event.(type) {
 339         case *tcell.EventRaw:
 340                 re := RawEvent{
 341                         esc: e.EscSeq(),
 342                 }
 343                 h.DoKeyEvent(re)
 344         case *tcell.EventPaste:
 345                 h.paste(e.Text())
 346                 h.Relocate()
 347         case *tcell.EventKey:
 348                 ke := KeyEvent{
 349                         code: e.Key(),
 350                         mod:  metaToAlt(e.Modifiers()),
 351                         r:    e.Rune(),
 352                 }
 353
 354                 done := h.DoKeyEvent(ke)
 355                 if !done && e.Key() == tcell.KeyRune {
 356                         h.DoRuneInsert(e.Rune())
 357                 }
 358         case *tcell.EventMouse:
 359                 cancel := false
 360                 switch e.Buttons() {
 361                 case tcell.Button1:
 362                         _, my := e.Position()
 363                         if h.Buf.Type.Kind != buffer.BTInfo.Kind && h.Buf.Settings["statusline"].(bool) && my >= h.GetView().Y+h.GetView().Height-1 {
 364                                 cancel = true
 365                         }
 366                 case tcell.ButtonNone:
 367                         // Mouse event with no click
 368                         if !h.mouseReleased {
 369                                 // Mouse was just released
 370
 371                                 // mx, my := e.Position()
 372                                 // mouseLoc := h.LocFromVisual(buffer.Loc{X: mx, Y: my})
 373
 374                                 // we could finish the selection based on the release location as described
 375                                 // below but when the mouse click is within the scroll margin this will
 376                                 // cause a scroll and selection even for a simple mouse click which is
 377                                 // not good
 378                                 // for terminals that don't support mouse motion events, selection via
 379                                 // the mouse won't work but this is ok
 380
 381                                 // Relocating here isn't really necessary because the cursor will
 382                                 // be in the right place from the last mouse event
 383                                 // However, if we are running in a terminal that doesn't support mouse motion
 384                                 // events, this still allows the user to make selections, except only after they
 385                                 // release the mouse
 386
 387                                 // if !h.doubleClick && !h.tripleClick {
 388                                 //      h.Cursor.SetSelectionEnd(h.Cursor.Loc)
 389                                 // }
 390                                 if h.Cursor.HasSelection() {
 391                                         h.Cursor.CopySelection(clipboard.PrimaryReg)
 392                                 }
 393                                 h.mouseReleased = true
 394                         }
 395                 }
 396
 397                 if !cancel {
 398                         me := MouseEvent{
 399                                 btn: e.Buttons(),
 400                                 mod: metaToAlt(e.Modifiers()),
 401                         }
 402                         h.DoMouseEvent(me, e)
 403                 }
 404         }
 405         h.Buf.MergeCursors()
 406
 407         if h.IsActive() {
 408                 // Display any gutter messages for this line
 409                 c := h.Buf.GetActiveCursor()
 410                 none := true
 411                 for _, m := range h.Buf.Messages {
 412                         if c.Y == m.Start.Y || c.Y == m.End.Y {
 413                                 InfoBar.GutterMessage(m.Msg)
 414                                 none = false
 415                                 break
 416                         }
 417                 }
 418                 if none && InfoBar.HasGutter {
 419                         InfoBar.ClearGutter()
 420                 }
 421         }
 422 }
 423
 424 func (h *BufPane) Bindings() *KeyTree {
 425         if h.bindings != nil {
 426                 return h.bindings
 427         }
 428         return BufBindings
 429 }
 430
 431 // DoKeyEvent executes a key event by finding the action it is bound
 432 // to and executing it (possibly multiple times for multiple cursors)
 433 func (h *BufPane) DoKeyEvent(e Event) bool {
 434         binds := h.Bindings()
 435         action, more := binds.NextEvent(e, nil)
 436         if action != nil && !more {
 437                 action(h)
 438                 binds.ResetEvents()
 439                 return true
 440         } else if action == nil && !more {
 441                 binds.ResetEvents()
 442         }
 443         return more
 444 }
 445
 446 func (h *BufPane) execAction(action func(*BufPane) bool, name string, cursor int) bool {
 447         if name != "Autocomplete" && name != "CycleAutocompleteBack" {
 448                 h.Buf.HasSuggestions = false
 449         }
 450
 451         _, isMulti := MultiActions[name]
 452         if (!isMulti && cursor == 0) || isMulti {
 453                 if h.PluginCB("pre" + name) {
 454                         success := action(h)
 455                         success = success && h.PluginCB("on"+name)
 456
 457                         if isMulti {
 458                                 if recording_macro {
 459                                         if name != "ToggleMacro" && name != "PlayMacro" {
 460                                                 curmacro = append(curmacro, action)
 461                                         }
 462                                 }
 463                         }
 464
 465                         return success
 466                 }
 467         }
 468
 469         return false
 470 }
 471
 472 func (h *BufPane) completeAction(action string) {
 473         h.PluginCB("on" + action)
 474 }
 475
 476 func (h *BufPane) HasKeyEvent(e Event) bool {
 477         // TODO
 478         return true
 479         // _, ok := BufKeyBindings[e]
 480         // return ok
 481 }
 482
 483 // DoMouseEvent executes a mouse event by finding the action it is bound
 484 // to and executing it
 485 func (h *BufPane) DoMouseEvent(e MouseEvent, te *tcell.EventMouse) bool {
 486         binds := h.Bindings()
 487         action, _ := binds.NextEvent(e, te)
 488         if action != nil {
 489                 action(h)
 490                 binds.ResetEvents()
 491                 return true
 492         }
 493         // TODO
 494         return false
 495
 496         // if action, ok := BufMouseBindings[e]; ok {
 497         //      if action(h, te) {
 498         //              h.Relocate()
 499         //      }
 500         //      return true
 501         // } else if h.HasKeyEvent(e) {
 502         //      return h.DoKeyEvent(e)
 503         // }
 504         // return false
 505 }
 506
 507 // DoRuneInsert inserts a given rune into the current buffer
 508 // (possibly multiple times for multiple cursors)
 509 func (h *BufPane) DoRuneInsert(r rune) {
 510         cursors := h.Buf.GetCursors()
 511         for _, c := range cursors {
 512                 // Insert a character
 513                 h.Buf.SetCurCursor(c.Num)
 514                 h.Cursor = c
 515                 if !h.PluginCBRune("preRune", r) {
 516                         continue
 517                 }
 518                 if c.HasSelection() {
 519                         c.DeleteSelection()
 520                         c.ResetSelection()
 521                 }
 522
 523                 if h.isOverwriteMode {
 524                         next := c.Loc
 525                         next.X++
 526                         h.Buf.Replace(c.Loc, next, string(r))
 527                 } else {
 528                         h.Buf.Insert(c.Loc, string(r))
 529                 }
 530                 if recording_macro {
 531                         curmacro = append(curmacro, r)
 532                 }
 533                 h.Relocate()
 534                 h.PluginCBRune("onRune", r)
 535         }
 536 }
 537
 538 func (h *BufPane) VSplitIndex(buf *buffer.Buffer, right bool) *BufPane {
 539         e := NewBufPaneFromBuf(buf, h.tab)
 540         e.splitID = MainTab().GetNode(h.splitID).VSplit(right)
 541         MainTab().Panes = append(MainTab().Panes, e)
 542         MainTab().Resize()
 543         MainTab().SetActive(len(MainTab().Panes) - 1)
 544         return e
 545 }
 546 func (h *BufPane) HSplitIndex(buf *buffer.Buffer, bottom bool) *BufPane {
 547         e := NewBufPaneFromBuf(buf, h.tab)
 548         e.splitID = MainTab().GetNode(h.splitID).HSplit(bottom)
 549         MainTab().Panes = append(MainTab().Panes, e)
 550         MainTab().Resize()
 551         MainTab().SetActive(len(MainTab().Panes) - 1)
 552         return e
 553 }
 554
 555 func (h *BufPane) VSplitBuf(buf *buffer.Buffer) *BufPane {
 556         return h.VSplitIndex(buf, h.Buf.Settings["splitright"].(bool))
 557 }
 558 func (h *BufPane) HSplitBuf(buf *buffer.Buffer) *BufPane {
 559         return h.HSplitIndex(buf, h.Buf.Settings["splitbottom"].(bool))
 560 }
 561 func (h *BufPane) Close() {
 562         h.Buf.Close()
 563 }
 564
 565 func (h *BufPane) SetActive(b bool) {
 566         h.BWindow.SetActive(b)
 567         if b {
 568                 // Display any gutter messages for this line
 569                 c := h.Buf.GetActiveCursor()
 570                 none := true
 571                 for _, m := range h.Buf.Messages {
 572                         if c.Y == m.Start.Y || c.Y == m.End.Y {
 573                                 InfoBar.GutterMessage(m.Msg)
 574                                 none = false
 575                                 break
 576                         }
 577                 }
 578                 if none && InfoBar.HasGutter {
 579                         InfoBar.ClearGutter()
 580                 }
 581         }
 582
 583 }
 584
 585 // BufKeyActions contains the list of all possible key actions the bufhandler could execute
 586 var BufKeyActions = map[string]BufKeyAction{
 587         "CursorUp":                  (*BufPane).CursorUp,
 588         "CursorDown":                (*BufPane).CursorDown,
 589         "CursorPageUp":              (*BufPane).CursorPageUp,
 590         "CursorPageDown":            (*BufPane).CursorPageDown,
 591         "CursorLeft":                (*BufPane).CursorLeft,
 592         "CursorRight":               (*BufPane).CursorRight,
 593         "CursorStart":               (*BufPane).CursorStart,
 594         "CursorEnd":                 (*BufPane).CursorEnd,
 595         "SelectToStart":             (*BufPane).SelectToStart,
 596         "SelectToEnd":               (*BufPane).SelectToEnd,
 597         "SelectUp":                  (*BufPane).SelectUp,
 598         "SelectDown":                (*BufPane).SelectDown,
 599         "SelectLeft":                (*BufPane).SelectLeft,
 600         "SelectRight":               (*BufPane).SelectRight,
 601         "WordRight":                 (*BufPane).WordRight,
 602         "WordLeft":                  (*BufPane).WordLeft,
 603         "SelectWordRight":           (*BufPane).SelectWordRight,
 604         "SelectWordLeft":            (*BufPane).SelectWordLeft,
 605         "DeleteWordRight":           (*BufPane).DeleteWordRight,
 606         "DeleteWordLeft":            (*BufPane).DeleteWordLeft,
 607         "SelectLine":                (*BufPane).SelectLine,
 608         "SelectToStartOfLine":       (*BufPane).SelectToStartOfLine,
 609         "SelectToStartOfText":       (*BufPane).SelectToStartOfText,
 610         "SelectToStartOfTextToggle": (*BufPane).SelectToStartOfTextToggle,
 611         "SelectToEndOfLine":         (*BufPane).SelectToEndOfLine,
 612         "ParagraphPrevious":         (*BufPane).ParagraphPrevious,
 613         "ParagraphNext":             (*BufPane).ParagraphNext,
 614         "InsertNewline":             (*BufPane).InsertNewline,
 615         "Backspace":                 (*BufPane).Backspace,
 616         "Delete":                    (*BufPane).Delete,
 617         "InsertTab":                 (*BufPane).InsertTab,
 618         "Save":                      (*BufPane).Save,
 619         "SaveAll":                   (*BufPane).SaveAll,
 620         "SaveAs":                    (*BufPane).SaveAs,
 621         "Find":                      (*BufPane).Find,
 622         "FindLiteral":               (*BufPane).FindLiteral,
 623         "FindNext":                  (*BufPane).FindNext,
 624         "FindPrevious":              (*BufPane).FindPrevious,
 625         "Center":                    (*BufPane).Center,
 626         "Undo":                      (*BufPane).Undo,
 627         "Redo":                      (*BufPane).Redo,
 628         "Copy":                      (*BufPane).Copy,
 629         "CopyLine":                  (*BufPane).CopyLine,
 630         "Cut":                       (*BufPane).Cut,
 631         "CutLine":                   (*BufPane).CutLine,
 632         "DuplicateLine":             (*BufPane).DuplicateLine,
 633         "DeleteLine":                (*BufPane).DeleteLine,
 634         "MoveLinesUp":               (*BufPane).MoveLinesUp,
 635         "MoveLinesDown":             (*BufPane).MoveLinesDown,
 636         "IndentSelection":           (*BufPane).IndentSelection,
 637         "OutdentSelection":          (*BufPane).OutdentSelection,
 638         "Autocomplete":              (*BufPane).Autocomplete,
 639         "CycleAutocompleteBack":     (*BufPane).CycleAutocompleteBack,
 640         "OutdentLine":               (*BufPane).OutdentLine,
 641         "IndentLine":                (*BufPane).IndentLine,
 642         "Paste":                     (*BufPane).Paste,
 643         "PastePrimary":              (*BufPane).PastePrimary,
 644         "SelectAll":                 (*BufPane).SelectAll,
 645         "OpenFile":                  (*BufPane).OpenFile,
 646         "Start":                     (*BufPane).Start,
 647         "End":                       (*BufPane).End,
 648         "PageUp":                    (*BufPane).PageUp,
 649         "PageDown":                  (*BufPane).PageDown,
 650         "SelectPageUp":              (*BufPane).SelectPageUp,
 651         "SelectPageDown":            (*BufPane).SelectPageDown,
 652         "HalfPageUp":                (*BufPane).HalfPageUp,
 653         "HalfPageDown":              (*BufPane).HalfPageDown,
 654         "StartOfText":               (*BufPane).StartOfText,
 655         "StartOfTextToggle":         (*BufPane).StartOfTextToggle,
 656         "StartOfLine":               (*BufPane).StartOfLine,
 657         "EndOfLine":                 (*BufPane).EndOfLine,
 658         "ToggleHelp":                (*BufPane).ToggleHelp,
 659         "ToggleKeyMenu":             (*BufPane).ToggleKeyMenu,
 660         "ToggleDiffGutter":          (*BufPane).ToggleDiffGutter,
 661         "ToggleRuler":               (*BufPane).ToggleRuler,
 662         "ClearStatus":               (*BufPane).ClearStatus,
 663         "ShellMode":                 (*BufPane).ShellMode,
 664         "CommandMode":               (*BufPane).CommandMode,
 665         "ToggleOverwriteMode":       (*BufPane).ToggleOverwriteMode,
 666         "Escape":                    (*BufPane).Escape,
 667         "Quit":                      (*BufPane).Quit,
 668         "QuitAll":                   (*BufPane).QuitAll,
 669         "ForceQuit":                 (*BufPane).ForceQuit,
 670         "AddTab":                    (*BufPane).AddTab,
 671         "PreviousTab":               (*BufPane).PreviousTab,
 672         "NextTab":                   (*BufPane).NextTab,
 673         "NextSplit":                 (*BufPane).NextSplit,
 674         "PreviousSplit":             (*BufPane).PreviousSplit,
 675         "Unsplit":                   (*BufPane).Unsplit,
 676         "VSplit":                    (*BufPane).VSplitAction,
 677         "HSplit":                    (*BufPane).HSplitAction,
 678         "ToggleMacro":               (*BufPane).ToggleMacro,
 679         "PlayMacro":                 (*BufPane).PlayMacro,
 680         "Suspend":                   (*BufPane).Suspend,
 681         "ScrollUp":                  (*BufPane).ScrollUpAction,
 682         "ScrollDown":                (*BufPane).ScrollDownAction,
 683         "SpawnMultiCursor":          (*BufPane).SpawnMultiCursor,
 684         "SpawnMultiCursorUp":        (*BufPane).SpawnMultiCursorUp,
 685         "SpawnMultiCursorDown":      (*BufPane).SpawnMultiCursorDown,
 686         "SpawnMultiCursorSelect":    (*BufPane).SpawnMultiCursorSelect,
 687         "RemoveMultiCursor":         (*BufPane).RemoveMultiCursor,
 688         "RemoveAllMultiCursors":     (*BufPane).RemoveAllMultiCursors,
 689         "SkipMultiCursor":           (*BufPane).SkipMultiCursor,
 690         "JumpToMatchingBrace":       (*BufPane).JumpToMatchingBrace,
 691         "JumpLine":                  (*BufPane).JumpLine,
 692         "Deselect":                  (*BufPane).Deselect,
 693         "ClearInfo":                 (*BufPane).ClearInfo,
 694         "None":                      (*BufPane).None,
 695
 696         // This was changed to InsertNewline but I don't want to break backwards compatibility
 697         "InsertEnter": (*BufPane).InsertNewline,
 698 }
 699
 700 // BufMouseActions contains the list of all possible mouse actions the bufhandler could execute
 701 var BufMouseActions = map[string]BufMouseAction{
 702         "MousePress":       (*BufPane).MousePress,
 703         "MouseMultiCursor": (*BufPane).MouseMultiCursor,
 704 }
 705
 706 // MultiActions is a list of actions that should be executed multiple
 707 // times if there are multiple cursors (one per cursor)
 708 // Generally actions that modify global editor state like quitting or
 709 // saving should not be included in this list
 710 var MultiActions = map[string]bool{
 711         "CursorUp":                  true,
 712         "CursorDown":                true,
 713         "CursorPageUp":              true,
 714         "CursorPageDown":            true,
 715         "CursorLeft":                true,
 716         "CursorRight":               true,
 717         "CursorStart":               true,
 718         "CursorEnd":                 true,
 719         "SelectToStart":             true,
 720         "SelectToEnd":               true,
 721         "SelectUp":                  true,
 722         "SelectDown":                true,
 723         "SelectLeft":                true,
 724         "SelectRight":               true,
 725         "WordRight":                 true,
 726         "WordLeft":                  true,
 727         "SelectWordRight":           true,
 728         "SelectWordLeft":            true,
 729         "DeleteWordRight":           true,
 730         "DeleteWordLeft":            true,
 731         "SelectLine":                true,
 732         "SelectToStartOfLine":       true,
 733         "SelectToStartOfText":       true,
 734         "SelectToStartOfTextToggle": true,
 735         "SelectToEndOfLine":         true,
 736         "ParagraphPrevious":         true,
 737         "ParagraphNext":             true,
 738         "InsertNewline":             true,
 739         "Backspace":                 true,
 740         "Delete":                    true,
 741         "InsertTab":                 true,
 742         "FindNext":                  true,
 743         "FindPrevious":              true,
 744         "CopyLine":                  true,
 745         "Copy":                      true,
 746         "Cut":                       true,
 747         "CutLine":                   true,
 748         "DuplicateLine":             true,
 749         "DeleteLine":                true,
 750         "MoveLinesUp":               true,
 751         "MoveLinesDown":             true,
 752         "IndentSelection":           true,
 753         "OutdentSelection":          true,
 754         "OutdentLine":               true,
 755         "IndentLine":                true,
 756         "Paste":                     true,
 757         "PastePrimary":              true,
 758         "SelectPageUp":              true,
 759         "SelectPageDown":            true,
 760         "StartOfLine":               true,
 761         "StartOfText":               true,
 762         "StartOfTextToggle":         true,
 763         "EndOfLine":                 true,
 764         "JumpToMatchingBrace":       true,
 765 }