donner::editor::UndoRecord Class Reference

Record of a single text mutation for undo/redo. More...

#include "donner/editor/TextEditorCore.h"

Public Member Functions
	UndoRecord (std::string_view added, const Coordinates &addedStart, const Coordinates &addedEnd, std::string_view removed, const Coordinates &removedStart, const Coordinates &removedEnd, const EditorState &before, const EditorState &after)
	Records inserted and removed text with their ranges and surrounding editor states.
void	undo (TextEditorCore *core)
	Reverse this edit in the owning text editor.
void	redo (TextEditorCore *core)
	Reapply this edit in the owning text editor.

Public Attributes
RcString	added
	Text inserted by the original edit.
Coordinates	addedStart
	Start of the inserted range.
Coordinates	addedEnd
	End of the inserted range.
RcString	removed
	Text displaced by the original edit.
Coordinates	removedStart
	Start of the removed range.
Coordinates	removedEnd
	End of the removed range.
EditorState	before
	Editor state before the edit.
EditorState	after
	Editor state after the edit.

Detailed Description

Record of a single text mutation for undo/redo.

Stores the text added, the text removed, and the editor state before and after the mutation. undo reverses the mutation by removing the added text and re-inserting the removed text; redo replays it.

Constructor & Destructor Documentation

UndoRecord()

donner::editor::UndoRecord::UndoRecord	(	std::string_view	added,
		const Coordinates &	addedStart,
		const Coordinates &	addedEnd,
		std::string_view	removed,
		const Coordinates &	removedStart,
		const Coordinates &	removedEnd,
		const EditorState &	before,
		const EditorState &	after )

Records inserted and removed text with their ranges and surrounding editor states.

Parameters

added	Inserted text.
addedStart	Start of the inserted range.
addedEnd	End of the inserted range.
removed	Removed text.
removedStart	Start of the removed range.
removedEnd	End of the removed range.
before	State before the edit.
after	State after the edit.

Member Function Documentation

redo()

void donner::editor::UndoRecord::redo

(

TextEditorCore *

core

)

Reapply this edit in the owning text editor.

Parameters

core	Editor whose buffer and selection are updated.

undo()

void donner::editor::UndoRecord::undo

(

TextEditorCore *

core

)

Reverse this edit in the owning text editor.

Parameters

core	Editor whose buffer and selection are restored.

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The documentation for this class was generated from the following file:

• donner/editor/TextEditorCore.h