From 72f584da70a0847bdb3e9cdfb1cee322381e9080 Mon Sep 17 00:00:00 2001 From: fluxgen Date: Sat, 15 Feb 2003 01:21:40 +0000 Subject: moved from fluxbox src --- src/FbTk/Observer.cc | 33 ++++++++++++++++++++++ src/FbTk/Observer.hh | 39 +++++++++++++++++++++++++ src/FbTk/Subject.cc | 80 ++++++++++++++++++++++++++++++++++++++++++++++++++++ src/FbTk/Subject.hh | 54 +++++++++++++++++++++++++++++++++++ 4 files changed, 206 insertions(+) create mode 100644 src/FbTk/Observer.cc create mode 100644 src/FbTk/Observer.hh create mode 100644 src/FbTk/Subject.cc create mode 100644 src/FbTk/Subject.hh diff --git a/src/FbTk/Observer.cc b/src/FbTk/Observer.cc new file mode 100644 index 0000000..6142b07 --- /dev/null +++ b/src/FbTk/Observer.cc @@ -0,0 +1,33 @@ +// Observer.cc for FbTk +// Copyright (c) 2002 Henrik Kinnunen (fluxgen@fluxbox.org) +// +// Permission is hereby granted, free of charge, to any person obtaining a +// copy of this software and associated documentation files (the "Software"), +// to deal in the Software without restriction, including without limitation +// the rights to use, copy, modify, merge, publish, distribute, sublicense, +// and/or sell copies of the Software, and to permit persons to whom the +// Software is furnished to do so, subject to the following conditions: +// +// The above copyright notice and this permission notice shall be included in +// all copies or substantial portions of the Software. +// +// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR +// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, +// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL +// THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER +// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING +// FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER +// DEALINGS IN THE SOFTWARE. + +// $Id: Observer.cc,v 1.1 2003/02/15 01:21:40 fluxgen Exp $ + +#include "Observer.hh" +#include "Subject.hh" + +namespace FbTk { + +Observer::~Observer() { + Subject::removeObserver(this); // make sure no subject has this observer attached +} + +}; diff --git a/src/FbTk/Observer.hh b/src/FbTk/Observer.hh new file mode 100644 index 0000000..bc5a3ce --- /dev/null +++ b/src/FbTk/Observer.hh @@ -0,0 +1,39 @@ +// Observer.hh for FbTk +// Copyright (c) 2002 Henrik Kinnunen (fluxgen@fluxbox.org) +// +// Permission is hereby granted, free of charge, to any person obtaining a +// copy of this software and associated documentation files (the "Software"), +// to deal in the Software without restriction, including without limitation +// the rights to use, copy, modify, merge, publish, distribute, sublicense, +// and/or sell copies of the Software, and to permit persons to whom the +// Software is furnished to do so, subject to the following conditions: +// +// The above copyright notice and this permission notice shall be included in +// all copies or substantial portions of the Software. +// +// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR +// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, +// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL +// THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER +// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING +// FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER +// DEALINGS IN THE SOFTWARE. + +// $Id: Observer.hh,v 1.1 2003/02/15 01:21:40 fluxgen Exp $ + +#ifndef FBTK_OBSERVER_HH +#define FBTK_OBSERVER_HH + +namespace FbTk { + +class Subject; + +class Observer { +public: + virtual ~Observer(); + virtual void update(Subject *changedSubj) = 0; +}; + +}; // end namespace FBTK + +#endif // FBTK_OBSERVER_HH diff --git a/src/FbTk/Subject.cc b/src/FbTk/Subject.cc new file mode 100644 index 0000000..9443112 --- /dev/null +++ b/src/FbTk/Subject.cc @@ -0,0 +1,80 @@ +// Subject.cc for FbTk +// Copyright (c) 2002 Henrik Kinnunen (fluxgen@fluxbox.org) +// +// Permission is hereby granted, free of charge, to any person obtaining a +// copy of this software and associated documentation files (the "Software"), +// to deal in the Software without restriction, including without limitation +// the rights to use, copy, modify, merge, publish, distribute, sublicense, +// and/or sell copies of the Software, and to permit persons to whom the +// Software is furnished to do so, subject to the following conditions: +// +// The above copyright notice and this permission notice shall be included in +// all copies or substantial portions of the Software. +// +// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR +// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, +// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL +// THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER +// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING +// FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER +// DEALINGS IN THE SOFTWARE. + +// $Id: Subject.cc,v 1.1 2003/02/15 01:21:40 fluxgen Exp $ + +#include "Subject.hh" +#include "Observer.hh" + +#include +#include + +namespace FbTk { + +Subject::SubjectList Subject::s_subjectlist; + +Subject::Subject() { + s_subjectlist.push_back(this); +} + +Subject::~Subject() { + SubjectList::iterator it = s_subjectlist.begin(); + SubjectList::iterator it_end = s_subjectlist.end(); + for (; it != it_end; ++it) { + if (this == (*it)) { + s_subjectlist.erase(it); + break; + } + } +} + +void Subject::attach(Observer *obj) { + m_observerlist.push_back(obj); + // no need to have more than one instance of an observer + std::unique(m_observerlist.begin(), m_observerlist.end()); +} + +void Subject::detach(Observer *obj) { + ObserverList::iterator it = m_observerlist.begin(); + ObserverList::iterator it_end = m_observerlist.end(); + for (; it != it_end; ++it) { + if (obj == (*it)) { + m_observerlist.erase(it); + break; + } + } +} + +void Subject::notify() { + ObserverList::iterator it = m_observerlist.begin(); + for (; it != m_observerlist.end(); ++it) { + (*it)->update(this); + } +} + +void Subject::removeObserver(Observer *obj) { + SubjectList::iterator it = s_subjectlist.begin(); + for(; it != s_subjectlist.end(); ++it) { + (*it)->detach(obj); + } +} + +}; // end namespace FbTk diff --git a/src/FbTk/Subject.hh b/src/FbTk/Subject.hh new file mode 100644 index 0000000..39f88ee --- /dev/null +++ b/src/FbTk/Subject.hh @@ -0,0 +1,54 @@ +// Subject.hh for FbTk +// Copyright (c) 2002 Henrik Kinnunen (fluxgen@fluxbox.org) +// +// Permission is hereby granted, free of charge, to any person obtaining a +// copy of this software and associated documentation files (the "Software"), +// to deal in the Software without restriction, including without limitation +// the rights to use, copy, modify, merge, publish, distribute, sublicense, +// and/or sell copies of the Software, and to permit persons to whom the +// Software is furnished to do so, subject to the following conditions: +// +// The above copyright notice and this permission notice shall be included in +// all copies or substantial portions of the Software. +// +// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR +// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, +// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL +// THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER +// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING +// FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER +// DEALINGS IN THE SOFTWARE. + +// $Id: Subject.hh,v 1.1 2003/02/15 01:21:40 fluxgen Exp $ + +#ifndef FBTK_SUBJECT_HH +#define FBTK_SUBJECT_HH + +#include + +namespace FbTk { + +class Observer; + +class Subject { +public: + Subject(); + virtual ~Subject(); + /// attach an observer + void attach(Observer *obs); + /// detach an observer + void detach(Observer *obs); + /// notify all attached observers + void notify(); + static void removeObserver(Observer *obs); +private: + typedef std::list ObserverList; + ObserverList m_observerlist; + + typedef std::list SubjectList; + static SubjectList s_subjectlist; +}; + +}; // end namespace FbTk + +#endif // FBTK_SUBJECT_HH -- cgit v0.11.2