File indexing completed on 2024-04-28 05:52:37

 /*
     This file is part of the Okteta Gui library, made within the KDE community.
 
     SPDX-FileCopyrightText: 2019 Friedrich W. H. Kossebau <kossebau@kde.org>
 
     SPDX-License-Identifier: LGPL-2.1-only OR LGPL-3.0-only OR LicenseRef-KDE-Accepted-LGPL
 */
 
 #include "undoredocontroller.hpp"
 
 // lib
 #include <abstractbytearrayview.hpp>
 #include <abstractbytearraymodel.hpp>
 #include <versionable.hpp>
 // KF
 #include <KLocalizedString>
 // Qt
 #include <QKeyEvent>
 #include <QMenu>
 #include <QAction>
 
 namespace Okteta {
 
 UndoRedoController::UndoRedoController(AbstractByteArrayView* view, AbstractController* parent)
     : AbstractController(parent)
     , mView(view)
 {
 }
 
 
 UndoRedoController::~UndoRedoController() = default;
 
 bool UndoRedoController::handleKeyPress(QKeyEvent* keyEvent)
 {
     bool keyUsed = false;
 
     if (!mView->isReadOnly()) {
         if (keyEvent == QKeySequence::Undo) {
             keyUsed = undo();
         } else if (keyEvent == QKeySequence::Redo) {
             keyUsed = redo();
         }
     }
 
     return keyUsed ? true : AbstractController::handleKeyPress(keyEvent);
 }
 
 int UndoRedoController::addContextMenuActions(QMenu* menu)
 {
     if (mView->isReadOnly()) {
         return 0;
     }
 
     auto* versionable = qobject_cast<Versionable*>(mView->byteArrayModel());
 
     if (!versionable) {
         return 0;
     }
 
     const auto versionIndex = versionable->versionIndex();
     const auto versionCount = versionable->versionCount();
 
     QAction* undoAction = menu->addAction(QIcon::fromTheme(QStringLiteral("edit-undo")),
                                           i18nc("@action:inmenu", "&Undo") + QLatin1Char('\t') + QKeySequence(QKeySequence::Undo).toString(QKeySequence::NativeText),
                                           mView, [this] { undo(); });
     undoAction->setEnabled(0 < versionIndex);
     undoAction->setObjectName(QStringLiteral("edit-undo"));
 
     QAction* redoAction = menu->addAction(QIcon::fromTheme(QStringLiteral("edit-redo")),
                                           i18nc("@action:inmenu", "Re&do") + QLatin1Char('\t') + QKeySequence(QKeySequence::Redo).toString(QKeySequence::NativeText),
                                           mView, [this] { redo(); });
     redoAction->setEnabled(versionIndex+1 < versionCount);
     redoAction->setObjectName(QStringLiteral("edit-redo"));
 
     return 2;
 }
 
 bool UndoRedoController::undo()
 {
     auto* versionable = qobject_cast<Okteta::Versionable*>(mView->byteArrayModel());
 
     if (!versionable) {
         return false;
     }
 
     const auto versionIndex = versionable->versionIndex();
 
     if (0 >= versionIndex) {
         return false;
     }
 
     versionable->revertToVersionByIndex(versionIndex - 1);
     return true;
 }
 
 bool UndoRedoController::redo()
 {
     auto* versionable = qobject_cast<Okteta::Versionable*>(mView->byteArrayModel());
 
     if (!versionable) {
         return false;
     }
 
     const auto versionIndex = versionable->versionIndex();
 
     if (versionIndex + 1 >= versionable->versionCount()) {
         return false;
     }
 
     versionable->revertToVersionByIndex(versionIndex + 1);
     return true;
 }
 
 }