lua_debugger_pause.h

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/* lua_debugger_pause.h
 *
 * Wireshark - Network traffic analyzer
 * By Gerald Combs <[email protected]>
 * Copyright 1998 Gerald Combs
 *
 * SPDX-License-Identifier: GPL-2.0-or-later
 */
 
#ifndef LUA_DEBUGGER_PAUSE_H
#define LUA_DEBUGGER_PAUSE_H
 
#include <QList>
#include <QObject>
#include <QPointer>
#include <QString>
#include <QWidget>
 
class LuaDebuggerDialog;
class LuaDebuggerPauseOverlay;
class QAction;
class QEvent;
class QEventLoop;
class QPaintEvent;
 
/* ===== pause_controller ===== */
 
class LuaDebuggerPauseController : public QObject
{
  public:
    explicit LuaDebuggerPauseController(LuaDebuggerDialog *host);
 
    bool hasActiveLoop() const { return activeLoop_ != nullptr; }
    QEventLoop *activeLoop() const { return activeLoop_; }
    void setActiveLoop(QEventLoop *loop) { activeLoop_ = loop; }
    void clearActiveLoop() { activeLoop_ = nullptr; }
    void quitLoop();
 
    void beginOuterFreeze();
    void endFreeze();
 
  private:
    LuaDebuggerDialog *host_ = nullptr;
    QEventLoop *activeLoop_ = nullptr;
 
    QList<QPointer<QWidget>> frozenTopLevels_;
    QList<QPointer<QAction>> frozenActions_;
    QPointer<QWidget> frozenCentralWidget_;
    QPointer<LuaDebuggerPauseOverlay> pauseOverlay_;
    QObject *pauseInputFilter_ = nullptr;
    bool pauseUnfrozen_ = true;
};
 
/* ===== pause_overlay ===== */
 
class LuaDebuggerPauseOverlay : public QWidget
{
    Q_OBJECT
 
  public:
    explicit LuaDebuggerPauseOverlay(QWidget *parent);
    ~LuaDebuggerPauseOverlay() override;
 
  protected:
    void paintEvent(QPaintEvent *event) override;
    bool eventFilter(QObject *obj, QEvent *event) override;
 
  private:
    QString title_text_;
    QString subtext_text_;
};
 
/* ===== pause_key_filter ===== */
 
class LuaDebuggerPauseInputFilter : public QObject
{
  public:
    explicit LuaDebuggerPauseInputFilter(QWidget *debugger_dialog, QWidget *main_window, QObject *parent = nullptr);
 
    bool eventFilter(QObject *watched, QEvent *event) override;
 
  private:
    bool isAllowedDuringPause(const QWidget *w) const;
 
    QWidget *debugger_dialog_;
    QWidget *main_window_;
};
 
#endif