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/****************************************************************************
**
** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
** Contact: Qt Software Information (qt-info@nokia.com)
**
** This file is part of the ActiveQt framework of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:BSD$
** You may use this file under the terms of the BSD license as follows:
**
** "Redistribution and use in source and binary forms, with or without
** modification, are permitted provided that the following conditions are
** met:
** * Redistributions of source code must retain the above copyright
** notice, this list of conditions and the following disclaimer.
** * Redistributions in binary form must reproduce the above copyright
** notice, this list of conditions and the following disclaimer in
** the documentation and/or other materials provided with the
** distribution.
** * Neither the name of Nokia Corporation and its Subsidiary(-ies) nor
** the names of its contributors may be used to endorse or promote
** products derived from this software without specific prior written
** permission.
**
** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE."
** $QT_END_LICENSE$
**
****************************************************************************/
#include "qaxfactory.h"
#ifndef QT_NO_WIN_ACTIVEQT
#include <qfile.h>
#include <qfileinfo.h>
#include <qmetaobject.h>
#include <qsettings.h>
#include <qwidget.h>
#include <qt_windows.h>
QT_BEGIN_NAMESPACE
extern char qAxModuleFilename[MAX_PATH];
/*!
\class QAxFactory
\brief The QAxFactory class defines a factory for the creation of COM components.
\inmodule QAxServer
Implement this factory once in your COM server to provide information
about the components the server can create. Subclass QAxFactory and implement
the pure virtual functions in any implementation file (e.g. main.cpp), and export
the factory using the \c QAXFACTORY_EXPORT() macro.
\snippet doc/src/snippets/code/src_activeqt_control_qaxfactory.cpp 0
If you use the \c Q_CLASSINFO() macro to provide the unique
identifiers or other attributes for your class you can use the \c
QAXFACTORY_BEGIN(), \c QAXCLASS() and \c QAXFACTORY_END() macros to
expose one or more classes as COM objects.
\snippet doc/src/snippets/code/src_activeqt_control_qaxfactory.cpp 1
If your server supports just a single COM object, you can use
a default factory implementation through the \c QAXFACTORY_DEFAULT() macro.
\snippet doc/src/snippets/code/src_activeqt_control_qaxfactory.cpp 2
Only one QAxFactory implementation may be instantiated and
exported by an ActiveX server application. This instance is accessible
through the global qAxFactory() function.
A factory can also reimplement the registerClass() and
unregisterClass() functions to set additional flags for an ActiveX
control in the registry. To limit the number of methods or
properties a widget class exposes from its parent classes
reimplement exposeToSuperClass().
\sa QAxAggregated, QAxBindable, {ActiveQt Framework}
*/
/*!
Constructs a QAxFactory object that returns \a libid and \a appid
in the implementation of the respective interface functions.
*/
QAxFactory::QAxFactory(const QUuid &libid, const QUuid &appid)
: typelib(libid), app(appid)
{
}
/*!
Destroys the QAxFactory object.
*/
QAxFactory::~QAxFactory()
{
}
/*!
\fn QUuid QAxFactory::typeLibID() const
Reimplement this function to return the ActiveX server's type
library identifier.
*/
QUuid QAxFactory::typeLibID() const
{
return typelib;
}
/*!
\fn QUuid QAxFactory::appID() const
Reimplement this function to return the ActiveX server's
application identifier.
*/
QUuid QAxFactory::appID() const
{
return app;
}
/*!
\fn QStringList QAxFactory::featureList() const
Reimplement this function to return a list of the widgets (class
names) supported by this factory.
*/
/*!
\fn QObject *QAxFactory::createObject(const QString &key)
Reimplement this function to return a new object for \a key, or 0 if
this factory doesn't support the value of \a key.
If the object returned is a QWidget it will be exposed as an ActiveX
control, otherwise the returned object will be exposed as a simple COM
object.
*/
/*!
\fn const QMetaObject *QAxFactory::metaObject(const QString &key) const
Reimplement this function to return the QMetaObject corresponding to
\a key, or 0 if this factory doesn't support the value of \a key.
*/
/*!
\fn bool QAxFactory::createObjectWrapper(QObject *object, IDispatch **wrapper)
Reimplement this function to provide the COM object for \a object
in \a wrapper. Return true if the function was successful; otherwise
return false.
The default implementation creates a generic automation wrapper based
on the meta object information of \a object.
*/
// implementation in qaxserverbase.cpp
/*!
Reimplement this function to return the class identifier for each
\a key returned by the featureList() implementation, or an empty
QUuid if this factory doesn't support the value of \a key.
The default implementation interprets \a key as the class name,
and returns the value of the Q_CLASSINFO() entry "ClassID".
*/
QUuid QAxFactory::classID(const QString &key) const
{
const QMetaObject *mo = metaObject(key);
if (!mo)
return QUuid();
QString id = QString::fromLatin1(mo->classInfo(mo->indexOfClassInfo("ClassID")).value());
return QUuid(id);
}
/*!
Reimplement this function to return the interface identifier for
each \a key returned by the featureList() implementation, or an
empty QUuid if this factory doesn't support the value of \a key.
The default implementation interprets \a key as the class name,
and returns the value of the Q_CLASSINFO() entry "InterfaceID".
*/
QUuid QAxFactory::interfaceID(const QString &key) const
{
const QMetaObject *mo = metaObject(key);
if (!mo)
return QUuid();
QString id = QString::fromLatin1(mo->classInfo(mo->indexOfClassInfo("InterfaceID")).value());
return QUuid(id);
}
/*!
Reimplement this function to return the identifier of the event
interface for each \a key returned by the featureList()
implementation, or an empty QUuid if this factory doesn't support
the value of \a key.
The default implementation interprets \a key as the class name,
and returns the value of the Q_CLASSINFO() entry "EventsID".
*/
QUuid QAxFactory::eventsID(const QString &key) const
{
const QMetaObject *mo = metaObject(key);
if (!mo)
return QUuid();
QString id = QString::fromLatin1(mo->classInfo(mo->indexOfClassInfo("EventsID")).value());
return QUuid(id);
}
/*!
Registers additional values for the class \a key in the system
registry using the \a settings object. The standard values have
already been registered by the framework, but additional values,
e.g. implemented categories, can be added in an implementation of
this function.
\snippet doc/src/snippets/code/src_activeqt_control_qaxfactory.cpp 3
If you reimplement this function you must also reimplement
unregisterClass() to remove the additional registry values.
\sa QSettings
*/
void QAxFactory::registerClass(const QString &key, QSettings *settings) const
{
Q_UNUSED(key);
Q_UNUSED(settings)
}
/*!
Unregisters any additional values for the class \a key from the
system registry using the \a settings object.
\snippet doc/src/snippets/code/src_activeqt_control_qaxfactory.cpp 4
\sa registerClass(), QSettings
*/
void QAxFactory::unregisterClass(const QString &key, QSettings *settings) const
{
Q_UNUSED(key);
Q_UNUSED(settings)
}
/*!
Reimplement this function to return true if \a licenseKey is a valid
license for the class \a key, or if the current machine is licensed.
The default implementation returns true if the class \a key is
not licensed (ie. no \c Q_CLASSINFO() attribute "LicenseKey"), or
if \a licenseKey matches the value of the "LicenseKey"
attribute, or if the machine is licensed through a .LIC file with
the same filename as this COM server.
*/
bool QAxFactory::validateLicenseKey(const QString &key, const QString &licenseKey) const
{
const QMetaObject *mo = metaObject(key);
if (!mo)
return true;
QString classKey = QString::fromLatin1(mo->classInfo(mo->indexOfClassInfo("LicenseKey")).value());
if (classKey.isEmpty())
return true;
if (licenseKey.isEmpty()) {
QString licFile(QFile::decodeName(qAxModuleFilename));
int lastDot = licFile.lastIndexOf(QLatin1Char('.'));
licFile = licFile.left(lastDot) + QLatin1String(".lic");
if (QFile::exists(licFile))
return true;
return false;
}
return licenseKey == classKey;
}
/*!
Reimplement this function to return the name of the super class of
\a key up to which methods and properties should be exposed by the
ActiveX control.
The default implementation interprets \a key as the class name,
and returns the value of the \c Q_CLASSINFO() entry
"ToSuperClass". If no such value is set the null-string is
returned, and the functions and properties of all the super
classes including QWidget will be exposed.
To only expose the functions and properties of the class itself,
reimplement this function to return \a key.
*/
QString QAxFactory::exposeToSuperClass(const QString &key) const
{
const QMetaObject *mo = metaObject(key);
if (!mo)
return QString();
return QString::fromLatin1(mo->classInfo(mo->indexOfClassInfo("ToSuperClass")).value());
}
/*!
Reimplement this function to return true if the ActiveX control \a key
should be a top level window, e.g. a dialog. The default implementation
returns false.
*/
bool QAxFactory::stayTopLevel(const QString &key) const
{
return false;
}
/*!
Reimplement this function to return true if the ActiveX control
\a key should support the standard ActiveX events
\list
\i Click
\i DblClick
\i KeyDown
\i KeyPress
\i KeyUp
\i MouseDown
\i MouseUp
\i MouseMove
\endlist
The default implementation interprets \a key as the class name,
and returns true if the value of the \c Q_CLASSINFO() entry
"StockEvents" is "yes". Otherwise this function returns false.
*/
bool QAxFactory::hasStockEvents(const QString &key) const
{
const QMetaObject *mo = metaObject(key);
if (!mo)
return false;
return QString::fromLatin1(mo->classInfo(mo->indexOfClassInfo("StockEvents")).value()) == QLatin1String("yes");
}
extern bool qAxIsServer;
/*!
Returns true if the application has been started (by COM) as an ActiveX
server, otherwise returns false.
\snippet doc/src/snippets/code/src_activeqt_control_qaxfactory.cpp 5
*/
bool QAxFactory::isServer()
{
return qAxIsServer;
}
extern char qAxModuleFilename[MAX_PATH];
/*!
Returns the directory that contains the server binary.
For out-of-process servers this is the same as
QApplication::applicationDirPath(). For in-process servers
that function returns the directory that contains the hosting
application.
*/
QString QAxFactory::serverDirPath()
{
return QFileInfo(QString::fromLocal8Bit(qAxModuleFilename)).absolutePath();
}
/*!
Returns the file path of the server binary.
For out-of-process servers this is the same as
QApplication::applicationFilePath(). For in-process servers
that function returns the file path of the hosting application.
*/
QString QAxFactory::serverFilePath()
{
return QString::fromLocal8Bit(qAxModuleFilename);
}
/*!
Reimplement this function to return true if the server is
running as a persistent service (e.g. an NT service) and should
not terminate even when all objects provided have been released.
The default implementation returns false.
*/
bool QAxFactory::isService() const
{
return false;
}
/*!
\enum QAxFactory::ServerType
This enum specifies the different types of servers that can be
started with startServer.
\value SingleInstance The server process can create only one instance of each
exported class. COM starts a new process for each request. This is typically
used in servers that export only one creatable class.
\value MultipleInstances The server can create multiple instances of
each exported class. This is the default. All instances will live in the same
thread, and will share static resources.
*/
/*!
\fn bool QAxFactory::startServer(ServerType type);
Starts the COM server with \a type and returns true if successful,
otherwise returns false.
Calling this function if the server is already running (or for an
in-process server) does nothing and returns true.
The server is started automatically with \a type set to \c MultipleInstances
if the server executable has been started with the \c -activex
command line parameter. To switch to SingleInstance, call
\snippet doc/src/snippets/code/src_activeqt_control_qaxfactory.cpp 6
in your own main() entry point function.
*/
/*!
\fn bool QAxFactory::stopServer();
Stops the COM server and returns true if successful, otherwise
returns false.
Calling this function if the server is not running (or for an
in-process server) does nothing and returns true.
Stopping the server will not invalidate existing objects, but no
new objects can be created from the existing server process. Usually
COM will start a new server process if additional objects are requested.
The server is stopped automatically when the main() function returns.
*/
class ActiveObject : public QObject
{
public:
ActiveObject(QObject *parent, QAxFactory *factory);
~ActiveObject();
IDispatch *wrapper;
DWORD cookie;
};
ActiveObject::ActiveObject(QObject *parent, QAxFactory *factory)
: QObject(parent), wrapper(0), cookie(0)
{
QLatin1String key(parent->metaObject()->className());
factory->createObjectWrapper(parent, &wrapper);
if (wrapper)
RegisterActiveObject(wrapper, QUuid(factory->classID(key)), ACTIVEOBJECT_STRONG, &cookie);
}
ActiveObject::~ActiveObject()
{
if (cookie)
RevokeActiveObject(cookie, 0);
if (wrapper)
wrapper->Release();
}
/*!
Registers the QObject \a object with COM as a running object, and returns true if
the registration succeeded, otherwise returns false. The object is unregistered
automatically when it is destroyed.
This function should only be called if the application has been started by the user
(i.e. not by COM to respond to a request), and only for one object, usually the
toplevel object of the application's object hierarchy.
This function does nothing and returns false if the object's class info for
"RegisterObject" is not set to "yes", or if the server is an in-process server.
*/
bool QAxFactory::registerActiveObject(QObject *object)
{
if (qstricmp(object->metaObject()->classInfo(object->metaObject()->indexOfClassInfo("RegisterObject")).value(), "yes"))
return false;
if (!QString::fromLocal8Bit(qAxModuleFilename).toLower().endsWith(QLatin1String(".exe")))
return false;
ActiveObject *active = new ActiveObject(object, qAxFactory());
if (!active->wrapper || !active->cookie) {
delete active;
return false;
}
return true;
}
/*!
\macro QAXFACTORY_DEFAULT(Class, ClassID, InterfaceID, EventID, LibID, AppID)
\relates QAxFactory
This macro can be used to export a single QObject subclass \a Class a this
COM server through an implicitly declared QAxFactory implementation.
This macro exports the class \a Class as a COM coclass with the CLSID \a ClassID.
The properties and slots will be declared through a COM interface with the IID
\a InterfaceID, and signals will be declared through a COM event interface with
the IID \a EventID. All declarations will be in a type library with the id \a LibID,
and if the server is an executable server then it will have the application id
\a AppID.
\snippet doc/src/snippets/code/src_activeqt_control_qaxfactory.cpp 7
\sa QAXFACTORY_EXPORT(), QAXFACTORY_BEGIN()
*/
/*!
\macro QAXFACTORY_EXPORT(Class, LibID, AppID)
\relates QAxFactory
This macro can be used to export a QAxFactory implementation \a Class from
a COM server. All declarations will be in a type library with the id \a LibID,
and if the server is an executable server then it will have the application id
\a AppID.
\snippet doc/src/snippets/code/src_activeqt_control_qaxfactory.cpp 8
\sa QAXFACTORY_BEGIN()
*/
/*!
\macro QAXFACTORY_BEGIN(IDTypeLib, IDApp)
\relates QAxFactory
This macro can be used to export multiple QObject classes through an
implicitly declared QAxFactory implementation. All QObject classes have to
declare the ClassID, InterfaceID and EventsID (if applicable) through the
Q_CLASSINFO() macro. All declarations will be in a type library with the id
\a IDTypeLib, and if the server is an executable server then it will have the
application id \a IDApp.
This macro needs to be used together with the QAXCLASS(), QAXTYPE()
and QAXFACTORY_END() macros.
\snippet doc/src/snippets/code/src_activeqt_control_qaxfactory.cpp 9
*/
/*!
\macro QAXCLASS(Class)
\relates QAxFactory
This macro adds a creatable COM class \a Class to the QAxFactory declared
with the QAXFACTORY_BEGIN() macro.
\sa QAXFACTORY_BEGIN(), QAXTYPE(), QAXFACTORY_END(), Q_CLASSINFO()
*/
/*!
\macro QAXTYPE(Class)
\relates QAxFactory
This macro adds a non-creatable COM class \a Class to the QAxFactory
declared with the QAXFACTORY_BEGIN(). The class \a Class can be used
in APIs of other COM classes exported through QAXTYPE() or QAXCLASS().
Instances of type \a Class can only be retrieved using APIs of already
instantiated objects.
\sa QAXFACTORY_BEGIN(), QAXCLASS(), QAXFACTORY_END(), Q_CLASSINFO()
*/
/*!
\macro QAXFACTORY_END()
\relates QAxFactory
Completes the QAxFactory declaration started with the QAXFACTORY_BEGIN()
macro.
\sa QAXFACTORY_BEGIN(), QAXCLASS(), QAXTYPE()
*/
QT_END_NAMESPACE
#endif // QT_NO_WIN_ACTIVEQT
|