python_console.h

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// MIT License
// 
// Copyright (c) 2019 Ruhr University Bochum, Chair for Embedded Security. All Rights reserved.
// Copyright (c) 2019 Marc Fyrbiak, Sebastian Wallat, Max Hoffmann ("ORIGINAL AUTHORS"). All rights reserved.
// Copyright (c) 2021 Max Planck Institute for Security and Privacy. All Rights reserved.
// Copyright (c) 2021 Jörn Langheinrich, Julian Speith, Nils Albartus, René Walendy, Simon Klix ("ORIGINAL AUTHORS"). All Rights reserved.
// 
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
// 
// The above copyright notice and this permission notice shall be included in all
// copies or substantial portions of the Software.
// 
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
// SOFTWARE.
 
#pragma once
 
#include "gui/python/python_context_subscriber.h"
 
#include <QTextEdit>
#include <memory>
 
class QLabel;
class QPushButton;
class QTimer;
 
namespace hal
{
    class PythonConsoleHistory;
 
    class PythonConsoleAbortThread : public QFrame
    {
        Q_OBJECT
        int mCount;
        QLabel* mLabel;
        QPushButton* mAbortButton;
        QTimer* mTimer;
 
    private Q_SLOTS:
        void handleTimeout();
        void handleAbortButton();
    public:
        PythonConsoleAbortThread(QWidget* parent = nullptr);
        void start();
        void stop();
    };
 
    class PythonConsole : public QTextEdit, public PythonContextSubscriber
    {
        Q_OBJECT
 
    public:
        PythonConsole(QWidget* parent = nullptr);
        ~PythonConsole();
 
        enum PromptType { Standard, Compound, Input };
 
    protected:
        void keyPressEvent(QKeyEvent* e) override;
 
        void insertFromMimeData(const QMimeData* source) override;
 
        void mousePressEvent(QMouseEvent* event) override;
 
    public Q_SLOTS:
        void handleThreadFinished();
 
    private Q_SLOTS:
        void handleStyleChanged(int istyle);
 
    Q_SIGNALS:
        void inputReceived(QString input);
 
    public:
        virtual void handleStdout(const QString& output) override;
 
        virtual void handleError(const QString& output) override;
 
        virtual void clear() override;
 
        void displayPrompt();
 
        void interpretCommand();
 
        QString getCurrentCommand();
 
        void replaceCurrentCommand(const QString& new_command);
 
        void appendToCurrentCommand(const QString& new_command);
 
        bool selectionEditable();
 
        void handleUpKeyPressed();
 
        void handleDownKeyPressed();
 
        void handleTabKeyPressed();
 
        void insertAtEnd(const QString& text, QColor textColor);
 
        void setInputMode(bool state);
 
        PythonConsoleAbortThread* abortThreadWidget();
 
    private:
        QString mStandardPrompt;
        QString mCompoundPrompt;
        QString mInputPrompt;
 
        int mPromptBlockNumber;
        int mPromptLength;
        int mPromptEndPosition;
        int mCompoundPromptEndPosition;
 
        PromptType mPromptType;
        bool mInCompletion;
 
        QString mCurrentCompoundInput;
        QString mCurrentInput;
 
        int mCurrentHistoryIndex;
        int mCurrentCompleterIndex;
 
        std::shared_ptr<PythonConsoleHistory> mHistory;
        PythonConsoleAbortThread* mAbortThreadWidget;
 
        bool isCompound() const { return mPromptType == Compound; }
        bool isInputMode() const { return mPromptType == Input; }
 
        void keyPressEventInputMode(QKeyEvent* e);
 
        void discardInput(bool wholeStatement);
 
        static QString expandTabs(const QString& text);
    };
}