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Removed IContext
Network and voice samples work using them and have to allocate their own vatlib objects now. refs #221
This commit is contained in:
Roland Winklmeier
@@ -1,69 +0,0 @@
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//! Copyright (C) 2013 Roland Winklmeier
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//! This Source Code Form is subject to the terms of the Mozilla Public
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//! License, v. 2.0. If a copy of the MPL was not distributed with this
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//! file, You can obtain one at http://mozilla.org/MPL/2.0/
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#include "blackmisc/context.h"
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#include <QFileInfo>
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#include <QCoreApplication>
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#include <stdexcept>
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#ifdef Q_OS_WIN
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#ifndef NOMINMAX
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#define NOMINMAX
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#endif
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#include <windows.h>
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#endif
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namespace BlackMisc
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{
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IContext *&instancePointer()
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{
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static CApplicationContext context;
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static IContext *ptr = &context;
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return ptr;
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}
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void IContext::setInstance(IContext &context)
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{
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instancePointer() = &context;
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}
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IContext &IContext::getInstance()
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{
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return *instancePointer();
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}
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IContext::~IContext()
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{
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}
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CApplicationContext::CApplicationContext()
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{
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}
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const QObject *CApplicationContext::getQObjectNothrow(const QString &name) const
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{
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auto it = m_map.find(name);
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return it == m_map.end() ? nullptr : it.value();
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}
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void CApplicationContext::setQObject(QString name, QObject &object)
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{
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m_map.insert(name, &object);
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}
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void CApplicationContext::removeQObject(const QString &name)
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{
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m_map.remove(name);
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}
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void CApplicationContext::setDefaultApplicationName()
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{
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// This part was not working before on linux.
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// This class is depricated, but as long as it is not removed, if fixed it anyway.
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setApplicationName(QFileInfo(QCoreApplication::applicationFilePath()).fileName());
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}
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} // namespace BlackMisc
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@@ -1,229 +0,0 @@
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//! Copyright (C) 2013 Roland Winklmeier
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//! This Source Code Form is subject to the terms of the Mozilla Public
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//! License, v. 2.0. If a copy of the MPL was not distributed with this
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//! file, You can obtain one at http://mozilla.org/MPL/2.0/
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#ifndef BLACKMISC_CONTEXT_H
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#define BLACKMISC_CONTEXT_H
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#include <QMetaType>
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#include <QObject>
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#include <QMap>
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#include <stdexcept>
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namespace BlackMisc
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{
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/*!
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* Provides centralized modular access to long-lived interface objects.
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*/
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class IContext
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{
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public:
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/*!
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* Returns a reference to a static global context singleton.
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* \return
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* \warning Do not use this in code which could be called from within a plugin.
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* \deprecated Provided as a crutch to ease transition from singleton-based design.
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*/
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static IContext &getInstance();
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/*!
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* Allows for apps to set the static global context singleton.
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* \deprecated Provided as a crutch to ease transition from singleton-based design.
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*/
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static void setInstance(IContext &);
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/*!
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* Destructor.
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*/
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virtual ~IContext();
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/*!
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* Returns true if an object with the given name is present.
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* You usually use the type-safe hasObject method instead.
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* \param name
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* \return
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*/
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bool hasQObject(const QString &name)
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{
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return getQObjectNothrow(name);
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}
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/*!
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* Set the object pointer with the type T.
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* \tparam T A class derived from QObject using the Q_OBJECT macro.
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* \param object
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* \param name The name of the object; default is the name of its class, T.
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*/
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template <class T> void setObject(T &object, QString name = T::staticMetaObject.className())
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{
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setQObject(name, object);
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}
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/*!
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* Remove the object pointer with the type T.
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* \tparam T A class derived from QObject using the Q_OBJECT macro.
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* \param name The name of the object; default is the name of its class T.
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*/
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template <class T> void removeObject(const QString &name = T::staticMetaObject.className())
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{
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removeQObject(name);
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}
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/*!
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* Return an object pointer of the class T.
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* \tparam T A class derived from QObject using the Q_OBJECT macro.
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* \param name The name of the object; default is the name of its class, T.
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* \return
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* \throw std::logic_error The requested object is not present.
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*/
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template <class T> T &getObject(const QString &name = T::staticMetaObject.className())
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{
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T *obj = qobject_cast<T *>(getQObjectNothrow(name));
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if (!obj) { throw std::logic_error("IContext: qobject_cast failed"); }
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return *obj;
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}
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/*!
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* Return true if the requested object in present in the context.
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* \tparam T A class derived from QObject using the Q_OBJECT macro.
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* \param name The name of the object; default is the name of its class, T.
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* \return
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*/
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template <class T> bool hasObject(const QString &name = T::staticMetaObject.className()) const
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{
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const QObject *qobj = getQObjectNothrow(name);
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return qobj && qobject_cast<const T *>(qobj);
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}
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/*!
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* Sets an object pointer, given by its name.
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* You usually use the type-safe setObject method instead.
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* \param object
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* \param name
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*/
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virtual void setQObject(QString name, QObject &object) = 0;
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/*!
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* Removes an object pointer, given by its name.
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* You usually use the type-safe removeObject method instead.
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* \param name
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*/
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virtual void removeQObject(const QString &name) = 0;
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/*!
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* Like getQObject but returns nullptr instead of throwing an exception.
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* \param name
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* \return
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*/
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virtual const QObject *getQObjectNothrow(const QString &name) const = 0;
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/*!
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* Like getQObject but returns nullptr instead of throwing an exception.
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* \param name
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* \return
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*/
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QObject *getQObjectNothrow(const QString &name)
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{
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return const_cast<QObject *>(static_cast<const IContext *>(this)->getQObjectNothrow(name));
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}
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/*!
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* Returns the pointer to an object by its name.
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* You usually use the type-safe getObject method instead.
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* \param name
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* \return
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* \throw std::logic_error The requested object is not present.
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*/
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QObject &getQObject(const QString &name)
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{
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QObject *qobj = getQObjectNothrow(name);
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if (!qobj) { throw std::logic_error("IContext: named object not found"); }
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return *qobj;
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}
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/*!
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* Set the global name of the application.
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* \param appName
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*/
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virtual void setApplicationName(QString appName) = 0;
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/*!
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* Set the application name to the default.
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*/
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virtual void setDefaultApplicationName() = 0;
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/*!
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* Return the global name of the application.
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* \return
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*/
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virtual const QString &getApplicationName() const = 0;
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};
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/*!
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* Default implementation of the IContext interface.
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*/
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class CApplicationContext : public IContext
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{
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public:
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/*!
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* Constructor
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*/
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CApplicationContext();
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virtual const QObject *getQObjectNothrow(const QString &) const override;
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virtual void setQObject(QString, QObject &) override;
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virtual void removeQObject(const QString &) override;
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virtual void setApplicationName(QString appName) override { m_appName = appName; }
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virtual void setDefaultApplicationName() override;
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virtual const QString &getApplicationName() const override { return m_appName; }
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private:
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QMap<QString, QObject *> m_map;
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QString m_appName;
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};
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/*!
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This macros helps to create the body of a singletone class,
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which registers itself with the application context.
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\warning Singletons defined with this macro will not be accessible in plugins.
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\deprecated Preferred way is, during application initialization,
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construct would-be singletons and register them manually,
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and when you want to access them, do it through the IContext.
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*/
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#define SINGLETON_CLASS_DECLARATION(className) \
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private:\
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/* Forbid copying */ \
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className (const className &); \
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className &operator= (const className &); \
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/* the local static pointer to the singleton instance */ \
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static className *m_instance; \
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public:\
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static className &getInstance() \
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{ \
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if (m_instance == NULL) \
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{ \
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/* Get the singleton object from the context, if there is one */ \
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if (BlackMisc::IContext::getInstance().hasQObject(#className)) \
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{ \
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m_instance = static_cast<className*>(&BlackMisc::IContext::getInstance().getQObject(#className)); \
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} \
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else \
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{ \
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/* We have no allocated object yet, so do it now. */ \
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m_instance = new className; \
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BlackMisc::IContext::getInstance().setQObject(#className, *m_instance); \
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} \
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} \
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return *m_instance; \
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} \
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private:
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/* Put your class constructor directly after this makro and make sure it is private! */
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#define SINGLETON_CLASS_IMPLEMENTATION(className) className *className::m_instance = NULL;
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} // namespace BlackMisc
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#endif //BLACKMISC_CONTEXT_H
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