rwundo

package

v2.0.0-...-7f6935a Latest Latest Go to latest Published: May 5, 2020 License: MIT Imports: 7 Imported by: 0

Details

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Repository

github.com/jmigpin/editor

Documentation ¶

Index ¶

type Edits
type HList
- func NewHList() *HList
type History
- func NewHistory(maxLen int) *History
type RWUndo
- func NewRWUndo(rw iorw.ReadWriterAt, hist *History) *RWUndo
- func (rw *RWUndo) OverwriteAt(i, n int, p []byte) error
- func (rw *RWUndo) UndoRedo(redo, peek bool) (rwedit.SimpleCursor, bool, error)
type UndoRedo
- func NewUndoRedoOverwrite(rw iorw.ReadWriterAt, i, n int, p []byte) (*UndoRedo, error)

Constants ¶

This section is empty.

Variables ¶

This section is empty.

Functions ¶

This section is empty.

Types ¶

type Edits ¶

type Edits struct {
	// contains filtered or unexported fields
}

func (*Edits) Append ¶

func (edits *Edits) Append(ur *UndoRedo)

func (*Edits) Empty ¶

func (edits *Edits) Empty() bool

func (*Edits) Entries ¶

func (edits *Edits) Entries() []*UndoRedo

func (*Edits) MergeEdits ¶

func (edits *Edits) MergeEdits(edits2 *Edits)

func (*Edits) WriteUndoRedo ¶

func (edits *Edits) WriteUndoRedo(redo bool, w iorw.WriterAt) (rwedit.SimpleCursor, error)

type HList ¶

type HList struct {
	// contains filtered or unexported fields
}

func NewHList ¶

func NewHList() *HList

func (*HList) Append ¶

func (hl *HList) Append(edits *Edits, maxLen int)

func (*HList) Clear ¶

func (hl *HList) Clear()

func (*HList) ClearUndones ¶

func (hl *HList) ClearUndones()

func (*HList) DoneBack ¶

func (hl *HList) DoneBack() *list.Element

func (*HList) NDoneBack ¶

func (hl *HList) NDoneBack(n int) ([]*Edits, []*list.Element)

func (*HList) Redo ¶

func (hl *HList) Redo(peek bool) (*Edits, bool)

func (*HList) Undo ¶

func (hl *HList) Undo(peek bool) (*Edits, bool)

type History ¶

type History struct {
	// contains filtered or unexported fields
}

func NewHistory ¶

func NewHistory(maxLen int) *History

func (*History) Append ¶

func (h *History) Append(edits *Edits)

func (*History) BeginUndoGroup ¶

func (h *History) BeginUndoGroup(c rwedit.SimpleCursor)

func (*History) Clear ¶

func (h *History) Clear()

func (*History) ClearUndones ¶

func (h *History) ClearUndones()

func (*History) EndUndoGroup ¶

func (h *History) EndUndoGroup(c rwedit.SimpleCursor)

func (*History) UndoRedo ¶

func (h *History) UndoRedo(redo, peek bool) (*Edits, bool)

type RWUndo ¶

type RWUndo struct {
	iorw.ReadWriterAt
	History *History
}

func NewRWUndo ¶

func NewRWUndo(rw iorw.ReadWriterAt, hist *History) *RWUndo

func (*RWUndo) OverwriteAt ¶

func (rw *RWUndo) OverwriteAt(i, n int, p []byte) error

func (*RWUndo) UndoRedo ¶

func (rw *RWUndo) UndoRedo(redo, peek bool) (rwedit.SimpleCursor, bool, error)

type UndoRedo ¶

type UndoRedo struct {
	Index int
	D     []byte // deleted bytes of the original op
	I     []byte // inserted bytes of the original op
}

func NewUndoRedoOverwrite ¶

func NewUndoRedoOverwrite(rw iorw.ReadWriterAt, i, n int, p []byte) (*UndoRedo, error)

func (*UndoRedo) Apply ¶

func (ur *UndoRedo) Apply(redo bool, w iorw.WriterAt) error

func (*UndoRedo) IsDeleteOnly ¶

func (ur *UndoRedo) IsDeleteOnly() bool

func (*UndoRedo) IsInsertOnly ¶

func (ur *UndoRedo) IsInsertOnly() bool

Source Files ¶

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