File indexing completed on 2024-04-21 04:58:20

 /*
     SPDX-FileCopyrightText: 2009 David Faure <faure@kde.org>
     SPDX-FileCopyrightText: 2016 Anthony Fieroni <bvbfan@abv.bg>
 
     SPDX-License-Identifier: LGPL-2.0-only OR LGPL-3.0-only OR LicenseRef-KDE-Accepted-LGPL
 */
 
 #include "konqmouseeventfilter.h"
 #include "konqframe.h"
 #include "konqview.h"
 #include "konqmainwindow.h"
 #include "konqsettingsxt.h"
 
 #include <QApplication>
 #include <QMouseEvent>
 
 class KonqMouseEventFilterSingleton
 {
 public:
     KonqMouseEventFilter self;
 };
 
 Q_GLOBAL_STATIC(KonqMouseEventFilterSingleton, globalMouseEventFilter)
 
 KonqMouseEventFilter *KonqMouseEventFilter::self()
 {
     return &globalMouseEventFilter->self;
 }
 
 KonqMouseEventFilter::KonqMouseEventFilter()
     : QObject(nullptr)
 {
     reparseConfiguration();
     qApp->installEventFilter(this);
 }
 
 static KonqMainWindow* parentWindow(QWidget *w)
 {
     KonqFrame *frame = nullptr;
     while (w && !frame) {
         w = w->parentWidget(); // yes this fails if the initial widget itself is a KonqFrame, but this can't happen
         frame = qobject_cast<KonqFrame *>(w);
     }
     if (!frame) {
         return nullptr;
     }
     if (auto view = frame->childView()) {
         return view->mainWindow();
     }
     return nullptr;
 }
 
 bool KonqMouseEventFilter::eventFilter(QObject *obj, QEvent *e)
 {
     const int type = e->type();
     switch (type) {
     case QEvent::MouseButtonPress:
         switch (static_cast<QMouseEvent*>(e)->button()) {
         case Qt::RightButton:
             if (m_bBackRightClick) {
                 return true;
             }
             break;
         case Qt::ForwardButton:
             if (auto window = parentWindow(qobject_cast<QWidget*>(obj))) {
                 window->slotForward();
                 return true;
             }
             break;
         case Qt::BackButton:
             if (auto window = parentWindow(qobject_cast<QWidget*>(obj))) {
                 window->slotBack();
                 return true;
             }
             break;
         default:
             break;
         }
         break;
     case QEvent::MouseButtonRelease:
         if (!m_bBackRightClick) {
             break;
         }
         if (static_cast<QMouseEvent*>(e)->button() == Qt::RightButton) {
             if (auto window = parentWindow(qobject_cast<QWidget*>(obj))) {
                 window->slotBack();
                 return true;
             }
         }
         break;
     case QEvent::MouseMove: {
         QMouseEvent *ev = static_cast<QMouseEvent*>(e);
         if (m_bBackRightClick && ev->buttons() & Qt::RightButton) {
             qApp->removeEventFilter(this);
             QMouseEvent me(QEvent::MouseButtonPress, ev->pos(), Qt::RightButton, Qt::RightButton, Qt::NoModifier);
             QApplication::sendEvent(obj, &me);
             QContextMenuEvent ce(QContextMenuEvent::Mouse, ev->pos(), ev->globalPos());
             QApplication::sendEvent(obj, &ce);
             qApp->installEventFilter(this);
         }
         break;
     }
     case QEvent::ContextMenu: {
         QContextMenuEvent *ev = static_cast<QContextMenuEvent*>(e);
         if (m_bBackRightClick && ev->reason() == QContextMenuEvent::Mouse) {
             return true;
         }
         break;
     }
     default:
         break;
     }
 
     return false;
 }
 
 void KonqMouseEventFilter::reparseConfiguration()
 {
     m_bBackRightClick = KonqSettings::backRightClick();
 }