qdesktopservices.cpp

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#include "qdesktopservices.h"

#ifndef QT_NO_DESKTOPSERVICES

#include <qdebug.h>

#if defined(Q_OS_BLACKBERRY)
#include "qdesktopservices_blackberry.cpp"
#elif defined(Q_WS_QWS) || defined(Q_WS_QPA)
#include "qdesktopservices_qws.cpp"
#elif defined(Q_WS_X11)
#include "qdesktopservices_x11.cpp"
#elif defined(Q_WS_WIN)
#include "qdesktopservices_win.cpp"
#elif defined(Q_WS_MAC)
#include "qdesktopservices_mac.cpp"
#elif defined(Q_OS_SYMBIAN)
#include "qdesktopservices_s60.cpp"
#endif

#include <qhash.h>
#include <qobject.h>
#include <qcoreapplication.h>
#include <qurl.h>
#include <qmutex.h>

QT_BEGIN_NAMESPACE

class QOpenUrlHandlerRegistry : public QObject
{
    Q_OBJECT
public:
    inline QOpenUrlHandlerRegistry() : mutex(QMutex::Recursive) {}

    QMutex mutex;

    struct Handler
    {
        QObject *receiver;
        QByteArray name;
    };
    typedef QHash<QString, Handler> HandlerHash;
    HandlerHash handlers;

public Q_SLOTS:
    void handlerDestroyed(QObject *handler);

};

Q_GLOBAL_STATIC(QOpenUrlHandlerRegistry, handlerRegistry)

void QOpenUrlHandlerRegistry::handlerDestroyed(QObject *handler)
{
    HandlerHash::Iterator it = handlers.begin();
    while (it != handlers.end()) {
        if (it->receiver == handler) {
            it = handlers.erase(it);
        } else {
            ++it;
        }
    }
}

bool QDesktopServices::openUrl(const QUrl &url)
{
    QOpenUrlHandlerRegistry *registry = handlerRegistry();
    QMutexLocker locker(&registry->mutex);
    static bool insideOpenUrlHandler = false;

    if (!insideOpenUrlHandler) {
        QOpenUrlHandlerRegistry::HandlerHash::ConstIterator handler = registry->handlers.constFind(url.scheme());
        if (handler != registry->handlers.constEnd()) {
            insideOpenUrlHandler = true;
            bool result = QMetaObject::invokeMethod(handler->receiver, handler->name.constData(), Qt::DirectConnection, Q_ARG(QUrl, url));
            insideOpenUrlHandler = false;
            return result; // ### support bool slot return type
        }
    }

    bool result;
    if (url.scheme() == QLatin1String("file"))
        result = openDocument(url);
    else
        result = launchWebBrowser(url);

    return result;
}

void QDesktopServices::setUrlHandler(const QString &scheme, QObject *receiver, const char *method)
{
    QOpenUrlHandlerRegistry *registry = handlerRegistry();
    QMutexLocker locker(&registry->mutex);
    if (!receiver) {
        registry->handlers.remove(scheme);
        return;
    }
    QOpenUrlHandlerRegistry::Handler h;
    h.receiver = receiver;
    h.name = method;
    registry->handlers.insert(scheme, h);
    QObject::connect(receiver, SIGNAL(destroyed(QObject*)),
                     registry, SLOT(handlerDestroyed(QObject*)));
}

void QDesktopServices::unsetUrlHandler(const QString &scheme)
{
    setUrlHandler(scheme, 0, 0);
}

QT_END_NAMESPACE

#include "qdesktopservices.moc"

#endif // QT_NO_DESKTOPSERVICES