File indexing completed on 2024-05-19 05:42:24

 // ct_lvtqtc_undo_manager.cpp                                       -*-C++-*-
 
 /*
 // Copyright 2023 Codethink Ltd <codethink@codethink.co.uk>
 // SPDX-License-Identifier: Apache-2.0
 //
 // Licensed under the Apache License, Version 2.0 (the "License");
 // you may not use this file except in compliance with the License.
 // You may obtain a copy of the License at
 //
 //     http://www.apache.org/licenses/LICENSE-2.0
 //
 // Unless required by applicable law or agreed to in writing, software
 // distributed under the License is distributed on an "AS IS" BASIS,
 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 // See the License for the specific language governing permissions and
 // limitations under the License.
 */
 
 #include <ct_lvtqtc_undo_manager.h>
 
 #include <QDockWidget>
 #include <QMainWindow>
 #include <QUndoCommand>
 #include <QUndoView>
 
 #include <QDebug>
 #include <QGraphicsView>
 #include <QObject>
 
 #include <unordered_map>
 
 using namespace Codethink::lvtqtc;
 
 struct UndoManager::Private {
     QUndoStack undoStack;
     QWidget *debugWidget = nullptr;
     QDockWidget *dock = nullptr;
 };
 
 UndoManager::UndoManager(): d(std::make_unique<UndoManager::Private>())
 {
     d->undoStack.clear();
     d->undoStack.setUndoLimit(1000);
 }
 
 UndoManager::~UndoManager() = default;
 
 void UndoManager::undoGroupRequested(const QString& groupName)
 {
     d->undoStack.beginMacro(groupName);
 }
 
 void UndoManager::addUndoCommand(QUndoCommand *command)
 {
     qDebug() << "Registering command" << command->actionText() << "on the undo stack";
     d->undoStack.push(command);
 }
 
 void UndoManager::undoGroupFinished()
 {
     d->undoStack.endMacro();
 }
 
 void UndoManager::undo()
 {
     if (d->undoStack.canUndo()) {
         const auto *command = d->undoStack.command(d->undoStack.index() - 1);
         Q_EMIT onBeforeUndo(command);
         qDebug() << "Undoing" << command->actionText();
         d->undoStack.undo();
     }
 }
 
 void UndoManager::redo()
 {
     if (d->undoStack.canRedo()) {
         const auto *command = d->undoStack.command(d->undoStack.index());
         Q_EMIT onBeforeRedo(command);
         qDebug() << "Redoing" << command->actionText();
         d->undoStack.redo();
     }
 }
 
 void UndoManager::clear()
 {
     d->undoStack.clear();
 }
 
 void UndoManager::createDock(QMainWindow *mainWindow)
 {
     d->dock = new QDockWidget();
     d->dock->setWindowTitle("Undo Stack");
     d->dock->setObjectName("UndoStack");
     mainWindow->addDockWidget(Qt::DockWidgetArea::RightDockWidgetArea, d->dock);
     auto *stackView = new QUndoView(&d->undoStack);
     d->dock->setWidget(stackView);
     d->debugWidget = stackView;
     d->dock->setVisible(false);
 }