internal/action/bufpane.go

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