chromium/pdf/pdf_ink_undo_redo_model.cc

// Copyright 2024 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#include "pdf/pdf_ink_undo_redo_model.h"

#include <stddef.h>

#include <optional>
#include <set>
#include <vector>

#include "base/check.h"
#include "base/check_op.h"
#include "base/notreached.h"
#include "base/types/strong_alias.h"
#include "third_party/abseil-cpp/absl/types/variant.h"

namespace chrome_pdf {

namespace {

PdfInkUndoRedoModel::DrawCommands& GetModifiableDrawCommands(
    PdfInkUndoRedoModel::Commands& commands) { … }

PdfInkUndoRedoModel::EraseCommands& GetModifiableEraseCommands(
    PdfInkUndoRedoModel::Commands& commands) { … }

}  // namespace

PdfInkUndoRedoModel::PdfInkUndoRedoModel() = default;

PdfInkUndoRedoModel::~PdfInkUndoRedoModel() = default;

std::optional<PdfInkUndoRedoModel::DiscardedDrawCommands>
PdfInkUndoRedoModel::StartDraw() { … }

bool PdfInkUndoRedoModel::Draw(size_t id) { … }

bool PdfInkUndoRedoModel::FinishDraw() { … }

std::optional<PdfInkUndoRedoModel::DiscardedDrawCommands>
PdfInkUndoRedoModel::StartErase() { … }

bool PdfInkUndoRedoModel::Erase(size_t id) { … }

bool PdfInkUndoRedoModel::FinishErase() { … }

PdfInkUndoRedoModel::Commands PdfInkUndoRedoModel::Undo() { … }

PdfInkUndoRedoModel::Commands PdfInkUndoRedoModel::Redo() { … }

// static
PdfInkUndoRedoModel::CommandsType PdfInkUndoRedoModel::GetCommandsType(
    const Commands& commands) { … }

// static
const PdfInkUndoRedoModel::DrawCommands& PdfInkUndoRedoModel::GetDrawCommands(
    const Commands& commands) { … }

// static
const PdfInkUndoRedoModel::EraseCommands& PdfInkUndoRedoModel::GetEraseCommands(
    const Commands& commands) { … }

template <typename T>
std::optional<PdfInkUndoRedoModel::DiscardedDrawCommands>
PdfInkUndoRedoModel::StartImpl() { … }

bool PdfInkUndoRedoModel::IsAtTopOfStackWithGivenCommandType(
    CommandsType type) const { … }

bool PdfInkUndoRedoModel::HasIdInDrawCommands(size_t id) const { … }

bool PdfInkUndoRedoModel::HasIdInEraseCommands(size_t id) const { … }

}  // namespace chrome_pdf