File indexing completed on 2024-05-12 05:29:23

 /*
  *   SPDX-FileCopyrightText: 2010-2016 Ivan Cukic <ivan.cukic@kde.org>
  *
  *   SPDX-License-Identifier: GPL-2.0-only OR GPL-3.0-only OR LicenseRef-KDE-Accepted-GPL
  */
 
 // Self
 #include "Resources.h"
 #include "Resources_p.h"
 
 // Qt
 #include <QDBusConnection>
 #include <QMutex>
 #include <QMutexLocker>
 #include <QThread>
 
 // KDE
 #include <KX11Extras>
 
 // Utils
 #include <utils/d_ptr_implementation.h>
 #include <utils/remove_if.h>
 
 // System
 #include <time.h>
 
 // Local
 #include "common/dbus/common.h"
 #include "resourcesadaptor.h"
 
 Resources::Private::Private(Resources *parent)
     : QThread(parent)
     , focussedWindow(0)
     , q(parent)
 {
 }
 
 Resources::Private::~Private()
 {
     requestInterruption();
     wait(1500); // Enough time for the sleep(1) + processing in run()
 }
 
 namespace
 {
 EventList events;
 QMutex events_mutex;
 }
 
 void Resources::Private::run()
 {
     while (!isInterruptionRequested()) {
         // initial delay before processing the events
         sleep(1);
 
         EventList currentEvents;
 
         {
             QMutexLocker locker(&events_mutex);
 
             if (events.count() == 0) {
                 return;
             }
 
             std::swap(currentEvents, events);
         }
 
         Q_EMIT q->ProcessedResourceEvents(currentEvents);
     }
 }
 
 void Resources::Private::insertEvent(const Event &newEvent)
 {
     if (lastEvent == newEvent) {
         return;
     }
 
     lastEvent = newEvent;
 
     {
         QMutexLocker locker(&events_mutex);
         events << newEvent;
     }
 
     Q_EMIT q->RegisteredResourceEvent(newEvent);
 }
 
 void Resources::Private::addEvent(const QString &application, WId wid, const QString &uri, int type)
 {
     Event newEvent(application, wid, uri, type);
     addEvent(newEvent);
 }
 
 void Resources::Private::addEvent(const Event &newEvent)
 {
     // And now, for something completely delayed
     {
         QMutexLocker locker(&events_mutex);
 
         // Deleting previously registered Accessed events if
         // the current one has the same application and uri
         if (newEvent.type != Event::Accessed) {
             kamd::utils::remove_if(events, [&newEvent](const Event &event) -> bool {
                 return event.application == newEvent.application && event.uri == newEvent.uri;
             });
         }
     }
 
     // Process the windowing
     // Essentially, this is the brain of SLC. We need to track the
     // window focus changes to be able to generate the potential
     // missing events like FocussedOut before Closed and similar.
     // So, there is no point in having the same logic in SLC plugin
     // as well.
 
     if (newEvent.wid != 0) {
         WindowData &window = windows[newEvent.wid];
         const QString &uri = newEvent.uri;
 
         window.application = newEvent.application;
 
         switch (newEvent.type) {
         case Event::Opened:
             insertEvent(newEvent);
 
             if (window.focussedResource.isEmpty()) {
                 // This window haven't had anything focused,
                 // assuming the new document is focused
 
                 window.focussedResource = newEvent.uri;
                 insertEvent(newEvent.deriveWithType(Event::FocussedIn));
             }
 
             break;
 
         case Event::FocussedIn:
 
             if (!window.resources.contains(uri)) {
                 // This window did not contain this resource before,
                 // sending Opened event
 
                 insertEvent(newEvent.deriveWithType(Event::Opened));
             }
 
             window.focussedResource = newEvent.uri;
             insertEvent(newEvent);
 
             break;
 
         case Event::Closed:
 
             if (window.focussedResource == uri) {
                 // If we are closing a document that is in focus,
                 // release focus first
 
                 insertEvent(newEvent.deriveWithType(Event::FocussedOut));
                 window.focussedResource.clear();
             }
 
             insertEvent(newEvent);
 
             break;
 
         case Event::FocussedOut:
 
             if (window.focussedResource == uri) {
                 window.focussedResource.clear();
             }
 
             insertEvent(newEvent);
 
             break;
 
         default:
             insertEvent(newEvent);
             break;
         }
 
     } else {
         // If we haven't got a window, just pass the event on,
         // but only if it is not a focus event
         if (newEvent.type != Event::FocussedIn && newEvent.type != Event::FocussedOut) {
             insertEvent(newEvent);
         }
     }
 
     start();
 }
 
 void Resources::Private::windowClosed(WId windowId)
 {
     // Testing whether the window is a registered one
 
     if (!windows.contains(windowId)) {
         return;
     }
 
     if (focussedWindow == windowId) {
         focussedWindow = 0;
     }
 
     // Closing all the resources that the window registered
 
     for (const QString &uri : std::as_const(windows[windowId].resources)) {
         q->RegisterResourceEvent(windows[windowId].application, windowId, uri, Event::Closed);
     }
 
     windows.remove(windowId);
 }
 
 void Resources::Private::activeWindowChanged(WId windowId)
 {
     // If the focused window has changed, we need to create a
     // FocussedOut event for the resource it contains,
     // and FocussedIn for the resource of the new active window.
     // The windows can do this manually, but if they are
     // SDI, we can do it on our own.
 
     if (windowId == focussedWindow) {
         return;
     }
 
     if (windows.contains(focussedWindow)) {
         const WindowData &data = windows[focussedWindow];
 
         if (!data.focussedResource.isEmpty()) {
             insertEvent(Event(data.application, focussedWindow, data.focussedResource, Event::FocussedOut));
         }
     }
 
     focussedWindow = windowId;
 
     if (windows.contains(focussedWindow)) {
         const WindowData &data = windows[focussedWindow];
 
         if (!data.focussedResource.isEmpty()) {
             insertEvent(Event(data.application, windowId, data.focussedResource, Event::FocussedIn));
         }
     }
 }
 
 Resources::Resources(QObject *parent)
     : Module(QStringLiteral("resources"), parent)
     , d(this)
 {
     qRegisterMetaType<Event>("Event");
     qRegisterMetaType<EventList>("EventList");
     qRegisterMetaType<WId>("WId");
 
     new ResourcesAdaptor(this);
     QDBusConnection::sessionBus().registerObject(KAMD_DBUS_OBJECT_PATH("Resources"), this);
 
     connect(KX11Extras::self(), &KX11Extras::windowRemoved, d.operator->(), &Resources::Private::windowClosed);
     connect(KX11Extras::self(), &KX11Extras::activeWindowChanged, d.operator->(), &Resources::Private::activeWindowChanged);
 }
 
 Resources::~Resources()
 {
 }
 
 void Resources::RegisterResourceEvent(const QString &application, uint _windowId, const QString &uri, uint event)
 {
     if (event > Event::LastEventType || uri.isEmpty() || application.isEmpty()) {
         return;
     }
 
     WId windowId = (WId)_windowId;
 
     d->addEvent(application, windowId, uri, (Event::Type)event);
 }
 
 void Resources::RegisterResourceMimetype(const QString &uri, const QString &mimetype)
 {
     if (!mimetype.isEmpty()) {
         return;
     }
 
     Q_EMIT RegisteredResourceMimetype(uri, mimetype);
 }
 
 void Resources::RegisterResourceTitle(const QString &uri, const QString &title)
 {
     // A dirty sanity check for the title
     if (title.length() < 3) {
         return;
     }
 
     Q_EMIT RegisteredResourceTitle(uri, title);
 }
 
 #include "moc_Resources_p.cpp"
 
 #include "moc_Resources.cpp"