+++ /dev/null
-/****************************************************************************
-**
-** Copyright (C) 2015 The Qt Company Ltd.
-** Copyright (C) 2016 Ivailo Monev
-**
-** This file is part of the QtGui module of the Katie Toolkit.
-**
-** $QT_BEGIN_LICENSE:LGPL$
-**
-** GNU Lesser General Public License Usage
-** This file may be used under the terms of the GNU Lesser
-** General Public License version 2.1 as published by the Free Software
-** Foundation and appearing in the file LICENSE.LGPL included in the
-** packaging of this file. Please review the following information to
-** ensure the GNU Lesser General Public License version 2.1 requirements
-** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
-**
-** $QT_END_LICENSE$
-**
-****************************************************************************/
-
-#include "qdesktopservices.h"
-
-#ifndef QT_NO_DESKTOPSERVICES
-
-#include "qdebug.h"
-#include "qhash.h"
-#include "qobject.h"
-#include "qcoreapplication.h"
-#include "qurl.h"
-#include "qmutex.h"
-#include "qprocess.h"
-#include "qstandardpaths.h"
-
-QT_BEGIN_NAMESPACE
-
-class QOpenUrlHandlerRegistry : public QObject
-{
- Q_OBJECT
-public:
- 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;
- }
- }
-}
-
-/*!
- \class QDesktopServices
- \brief The QDesktopServices class provides methods for accessing common desktop services.
- \since 4.2
- \ingroup desktop
-
- Many desktop environments provide services that can be used by applications to
- perform common tasks, such as opening a web page, in a way that is both consistent
- and takes into account the user's application preferences.
-
- This class contains functions that provide simple interfaces to these services
- that indicate whether they succeeded or failed.
-
- The openUrl() function is used to open files located at arbitrary URLs in external
- applications. For URLs that correspond to resources on the local filing system
- (where the URL scheme is "file"), a suitable application will be used to open the
- file; otherwise, a web browser will be used to fetch and display the file.
-
- The user's desktop settings control whether certain executable file types are
- opened for browsing, or if they are executed instead. Some desktop environments
- are configured to prevent users from executing files obtained from non-local URLs,
- or to ask the user's permission before doing so.
-
- \section1 URL Handlers
-
- The behavior of the openUrl() function can be customized for individual URL
- schemes to allow applications to override the default handling behavior for
- certain types of URLs.
-
- The dispatch mechanism allows only one custom handler to be used for each URL
- scheme; this is set using the setUrlHandler() function. Each handler is
- implemented as a slot which accepts only a single QUrl argument.
-
- The existing handlers for each scheme can be removed with the
- unsetUrlHandler() function. This returns the handling behavior for the given
- scheme to the default behavior.
-
- This system makes it easy to implement a help system, for example. Help could be
- provided in labels and text browsers using \gui{help://myapplication/mytopic}
- URLs, and by registering a handler it becomes possible to display the help text
- inside the application:
-
- \snippet doc/src/snippets/code/src_gui_util_qdesktopservices.cpp 0
-
- If inside the handler you decide that you can't open the requested
- URL, you can just call QDesktopServices::openUrl() again with the
- same argument, and it will try to open the URL using the
- appropriate mechanism for the user's desktop environment.
-
- \sa QSystemTrayIcon, QProcess
-*/
-
-/*!
- Opens the given \a url in the appropriate Web browser for the user's desktop
- environment, and returns true if successful; otherwise returns false.
-
- If the URL is a reference to a local file (i.e., the URL scheme is "file") then
- it will be opened with a suitable application instead of a Web browser.
-
- The following example opens a file on the Windows file system residing on a path
- that contains spaces:
-
- \snippet doc/src/snippets/code/src_gui_util_qdesktopservices.cpp 2
-
- If a \c mailto URL is specified, the user's e-mail client will be used to open a
- composer window containing the options specified in the URL, similar to the way
- \c mailto links are handled by a Web browser.
-
- For example, the following URL contains a recipient (\c{user@foo.com}), a
- subject (\c{Test}), and a message body (\c{Just a test}):
-
- \snippet doc/src/snippets/code/src_gui_util_qdesktopservices.cpp 1
-
- \warning Although many e-mail clients can send attachments and are
- Unicode-aware, the user may have configured their client without these features.
- Also, certain e-mail clients (e.g., Lotus Notes) have problems with long URLs.
-
- \sa setUrlHandler()
-*/
-bool QDesktopServices::openUrl(const QUrl &url)
-{
- QOpenUrlHandlerRegistry *registry = handlerRegistry();
- QMutexLocker locker(®istry->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
- }
- }
-
- if (!url.isValid())
- return false;
-
- const QString command = QLatin1String("xdg-open ") + url.toEncoded();
- return QProcess::startDetached(command);
-}
-
-/*!
- Sets the handler for the given \a scheme to be the handler \a method provided by
- the \a receiver object.
-
- This function provides a way to customize the behavior of openUrl(). If openUrl()
- is called with a URL with the specified \a scheme then the given \a method on the
- \a receiver object is called instead of QDesktopServices launching an external
- application.
-
- The provided method must be implemented as a slot that only accepts a single QUrl
- argument.
-
- If setUrlHandler() is used to set a new handler for a scheme which already
- has a handler, the existing handler is simply replaced with the new one.
- Since QDesktopServices does not take ownership of handlers, no objects are
- deleted when a handler is replaced.
-
- Note that the handler will always be called from within the same thread that
- calls QDesktopServices::openUrl().
-
- \sa openUrl(), unsetUrlHandler()
-*/
-void QDesktopServices::setUrlHandler(const QString &scheme, QObject *receiver, const char *method)
-{
- QOpenUrlHandlerRegistry *registry = handlerRegistry();
- QMutexLocker locker(®istry->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*)));
-}
-
-/*!
- Removes a previously set URL handler for the specified \a scheme.
-
- \sa setUrlHandler()
-*/
-void QDesktopServices::unsetUrlHandler(const QString &scheme)
-{
- setUrlHandler(scheme, 0, 0);
-}
-
-/*!
- \enum QDesktopServices::StandardLocation
- \since 4.4
-
- This enum describes the different locations that can be queried by
- QDesktopServices::storageLocation and QDesktopServices::displayName.
-
- \value DesktopLocation Returns the user's desktop directory.
- \value DocumentsLocation Returns the user's document.
- \value MusicLocation Returns the users music.
- \value MoviesLocation Returns the user's movies.
- \value PicturesLocation Returns the user's pictures.
- \value DataLocation Returns a directory location where persistent
- application data can be stored. QCoreApplication::applicationName
- and QCoreApplication::organizationName should work on all
- platforms.
- \value CacheLocation Returns a directory location where user-specific
- non-essential (cached) data should be written.
-
- \sa storageLocation() displayName()
-*/
-
-/*!
- \since 4.4
-
- Returns the default system directory where files of \a type belong, or an empty string
- if the location cannot be determined.
-
- \note The storage location returned can be a directory that does not exist; i.e., it
- may need to be created by the system or the user.
-*/
-QString QDesktopServices::storageLocation(StandardLocation type)
-{
- switch (type) {
- case StandardLocation::DesktopLocation: {
- return QStandardPaths::writableLocation(QStandardPaths::DesktopLocation);
- }
- case StandardLocation::DocumentsLocation: {
- return QStandardPaths::writableLocation(QStandardPaths::DocumentsLocation);
- }
- case StandardLocation::MusicLocation: {
- return QStandardPaths::writableLocation(QStandardPaths::MusicLocation);
- }
- case StandardLocation::MoviesLocation: {
- return QStandardPaths::writableLocation(QStandardPaths::VideosLocation);
- }
- case StandardLocation::PicturesLocation: {
- return QStandardPaths::writableLocation(QStandardPaths::PicturesLocation);
- }
- case StandardLocation::DataLocation: {
- return QStandardPaths::writableLocation(QStandardPaths::DataLocation);
- }
- case StandardLocation::CacheLocation: {
- return QStandardPaths::writableLocation(QStandardPaths::CacheLocation);
- }
- }
- Q_UNREACHABLE();
-}
-
-/*!
- Returns a localized display name for the given location \a type or
- an empty QString if no relevant location can be found.
-*/
-QString QDesktopServices::displayName(StandardLocation type)
-{
- switch (type) {
- case StandardLocation::DesktopLocation: {
- return QStandardPaths::displayName(QStandardPaths::DesktopLocation);
- }
- case StandardLocation::DocumentsLocation: {
- return QStandardPaths::displayName(QStandardPaths::DocumentsLocation);
- }
- case StandardLocation::MusicLocation: {
- return QStandardPaths::displayName(QStandardPaths::MusicLocation);
- }
- case StandardLocation::MoviesLocation: {
- return QStandardPaths::displayName(QStandardPaths::VideosLocation);
- }
- case StandardLocation::PicturesLocation: {
- return QStandardPaths::displayName(QStandardPaths::PicturesLocation);
- }
- case StandardLocation::DataLocation: {
- return QStandardPaths::displayName(QStandardPaths::DataLocation);
- }
- case StandardLocation::CacheLocation: {
- return QStandardPaths::displayName(QStandardPaths::CacheLocation);
- }
- }
- Q_UNREACHABLE();
-}
-
-QT_END_NAMESPACE
-
-
-
-#endif // QT_NO_DESKTOPSERVICES
-
-#include "moc_qdesktopservices.cpp"
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