@@ -0,0 +1,321 @@ 
+// Gnome.cc for fluxbox
+// 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: Gnome.cc,v 1.1 2002/09/07 20:32:44 fluxgen Exp $
+
+#include "Gnome.hh"
+#include "Window.hh"
+#include "Screen.hh"
+
+#include <iostream>
+using namespace std;
+
+Gnome::Gnome() {
+	createAtoms();
+}
+
+Gnome::~Gnome() {
+	// destroy gnome windows
+	while (!m_gnomewindows.empty()) {
+		XDestroyWindow(BaseDisplay::getXDisplay(), m_gnomewindows.back());
+		m_gnomewindows.pop_back();		
+	}
+}
+
+void Gnome::initForScreen(const BScreen &screen) {
+	Display *disp = BaseDisplay::getXDisplay();
+	// create the GNOME window
+	Window gnome_win = XCreateSimpleWindow(disp,
+		screen.getRootWindow(), 0, 0, 5, 5, 0, 0, 0);
+	// supported WM check
+	XChangeProperty(disp, screen.getRootWindow(), 
+		m_gnome_wm_supporting_wm_check, 
+		XA_CARDINAL, 32, PropModeReplace, (unsigned char *) &gnome_win, 1);
+
+	XChangeProperty(disp, gnome_win, 
+		m_gnome_wm_supporting_wm_check, 
+		XA_CARDINAL, 32, PropModeReplace, (unsigned char *) &gnome_win, 1);
+
+	Atom gnomeatomlist[] = {
+		m_gnome_wm_supporting_wm_check,
+		m_gnome_wm_win_workspace_names,
+		m_gnome_wm_win_client_list,
+		m_gnome_wm_win_state,
+		m_gnome_wm_win_hints
+//		m_gnome_wm_win_layer  not supported yet
+	};
+
+	//list atoms that we support
+	XChangeProperty(disp, screen.getRootWindow(), 
+		m_gnome_wm_prot, XA_ATOM, 32, PropModeReplace,
+		(unsigned char *)gnomeatomlist, (sizeof gnomeatomlist)/sizeof gnomeatomlist[0]);
+
+	m_gnomewindows.push_back(gnome_win);
+
+	updateClientList(screen);
+	updateWorkspaceNames(screen);
+	updateWorkspaceCount(screen);
+	updateCurrentWorkspace(screen);
+	
+}
+
+void Gnome::updateClientList(const BScreen &screen) {
+	size_t num=0;
+
+	BScreen::Workspaces::const_iterator workspace_it = screen.getWorkspacesList().begin();
+	BScreen::Workspaces::const_iterator workspace_it_end = screen.getWorkspacesList().end();
+	for (; workspace_it != workspace_it_end; ++workspace_it) {
+		num += (*workspace_it)->getWindowList().size();
+	}
+	//int num = getCurrentWorkspace()->getWindowList().size();
+	
+	Window *wl = new (nothrow) Window[num];
+	if (wl == 0) {
+		cerr<<"Fatal: Out of memory, can't allocate for gnome client list"<<endl;
+		return;
+	}
+	//start the iterator from begining
+	workspace_it = screen.getWorkspacesList().begin();
+	int win=0;
+	for (; workspace_it != workspace_it_end; ++workspace_it) {
+	
+		// Fill in array of window ID's
+		Workspace::Windows::const_iterator it = (*workspace_it)->getWindowList().begin();
+		Workspace::Windows::const_iterator it_end = (*workspace_it)->getWindowList().end();		
+		for (; it != it_end; ++it) {
+			// TODO!
+			//check if the window don't want to be visible in the list
+			//if (! ( (*it)->getGnomeHints() & WIN_STATE_HIDDEN) ) {
+				wl[win++] = (*it)->getClientWindow();
+			//}
+		}
+	}
+	//number of windows to show in client list
+	num = win;
+	XChangeProperty(BaseDisplay::getXDisplay(), 
+		screen.getRootWindow(), 
+		m_gnome_wm_win_client_list, 
+		XA_CARDINAL, 32,
+		PropModeReplace, (unsigned char *)wl, num);
+	
+	delete wl;
+}
+
+void Gnome::updateWorkspaceNames(const BScreen &screen) {
+	XTextProperty	text;
+	int number_of_desks = screen.getWorkspaceNames().size();
+	
+	char s[1024];
+	char *names[number_of_desks];		
+	
+	for (int i = 0; i < number_of_desks; i++) {		
+		sprintf(s, "Desktop %i", i);
+		names[i] = new char[strlen(s) + 1];
+		strcpy(names[i], s);
+	}
+	
+	if (XStringListToTextProperty(names, number_of_desks, &text)) {
+		XSetTextProperty(BaseDisplay::getXDisplay(), screen.getRootWindow(),
+			 &text, m_gnome_wm_win_workspace_names);
+		XFree(text.value);
+	}
+	
+	for (int i = 0; i < number_of_desks; i++)
+		delete [] names[i];		
+}
+
+void Gnome::updateCurrentWorkspace(const BScreen &screen) {
+	int workspace = screen.getCurrentWorkspaceID();
+	XChangeProperty(BaseDisplay::getXDisplay(), 
+		screen.getRootWindow(),
+		m_gnome_wm_win_workspace, XA_CARDINAL, 32, PropModeReplace,
+		(unsigned char *)&workspace, 1);
+
+	updateClientList(screen); // make sure the client list is updated too
+}
+
+void Gnome::updateWorkspaceCount(const BScreen &screen) {
+	int numworkspaces = screen.getCount();
+	XChangeProperty(BaseDisplay::getXDisplay(), screen.getRootWindow(),
+		m_gnome_wm_win_workspace_count, XA_CARDINAL, 32, PropModeReplace,
+		(unsigned char *)&numworkspaces, 1);
+}
+
+void Gnome::updateState(FluxboxWindow *win) {
+	//translate to gnome win state
+	int state=0;
+	if (win->isStuck())
+		state |= WIN_STATE_STICKY;
+	if (win->isIconic())
+		state |= WIN_STATE_MINIMIZED;
+	if (win->isShaded())
+		state |= WIN_STATE_SHADED;
+	
+	XChangeProperty(BaseDisplay::getXDisplay(), win->getClientWindow(), 
+		m_gnome_wm_win_state,
+		XA_CARDINAL, 32, PropModeReplace, (unsigned char *)&state, 1);
+}
+
+void Gnome::updateHints(FluxboxWindow *win) {
+	//TODO
+	
+}
+
+bool Gnome::checkClientMessage(const XClientMessageEvent &ce, BScreen *screen, FluxboxWindow *win) {
+	if (ce.message_type == m_gnome_wm_win_workspace) {
+#ifdef DEBUG
+		cerr<<__FILE__<<"("<<__LINE__<<"): Got workspace atom="<<ce.data.l[0]<<endl;
+#endif//!DEBUG
+		if ( win !=0 && // the message sent to client window?
+				win->getScreen() && ce.data.l[0] >= 0 &&
+				ce.data.l[0] < (signed)win->getScreen()->getCount()) {
+			win->getScreen()->changeWorkspaceID(ce.data.l[0]);
+					
+		} else if (screen!=0 && //the message sent to root window?
+				ce.data.l[0] >= 0 &&
+				ce.data.l[0] < (signed)screen->getCount())
+			screen->changeWorkspaceID(ce.data.l[0]);
+		return true;
+	} else if (win == 0)
+		return false; 
+		
+
+	if (ce.message_type == m_gnome_wm_win_state) {
+#ifdef DEBUG
+		cerr<<__FILE__<<"("<<__LINE__<<"): _WIN_STATE"<<endl;
+#endif // DEBUG
+			
+#ifdef DEBUG
+		cerr<<__FILE__<<"("<<__LINE__<<"): Mask of members to change:"<<
+			hex<<ce.data.l[0]<<dec<<endl; // mask_of_members_to_change
+		cerr<<"New members:"<<ce.data.l[1]<<endl;
+#endif // DEBUG
+	
+		//get new states			
+		int flag = ce.data.l[0] & ce.data.l[1];
+		//don't update this when when we set new state
+		disableUpdate();
+		// convert to Fluxbox state
+		setState(win, flag);
+		// enable update of atom states
+		enableUpdate();
+			
+	} else if (ce.message_type == m_gnome_wm_win_hints) {
+#ifdef DEBUG
+		cerr<<__FILE__<<"("<<__LINE__<<"): _WIN_HINTS"<<endl;
+#endif // DEBUG
+
+	} else 
+		return false; //the gnome atom wasn't found or not supported
+
+	return true; // we handled the atom
+}
+
+void Gnome::setState(FluxboxWindow *win, int state) {
+#ifdef DEBUG
+	cerr<<"Gnome: state=0x"<<hex<<state<<dec<<endl;
+#endif // DEBUG
+
+	if (state & WIN_STATE_STICKY) {
+#ifdef DEBUG
+		cerr<<"Gnome state: Sticky"<<endl;
+#endif // DEBUG
+		if (!win->isStuck())
+			win->stick();
+	} else if (win->isStuck())
+		win->stick();
+			
+	if (state & WIN_STATE_MINIMIZED) {
+#ifdef DEBUG
+		cerr<<"Gnome state: Minimized"<<endl;
+#endif // DEBUG
+		if (win->isIconic())
+			win->iconify();
+	} else if (win->isIconic())
+		win->deiconify(true, true);
+
+	if (state & WIN_STATE_SHADED) {
+#ifdef DEBUG
+		cerr<<"Gnome state: Shade"<<endl;
+#endif // DEBUG
+		if (!win->isShaded())
+			win->shade();
+	} else if (win->isShaded())
+		win->shade();
+
+	/* TODO	
+	if (state & WIN_STATE_MAXIMIZED_VERT)
+		cerr<<"Maximize Vert"<<endl;
+	if (state & WIN_STATE_MAXIMIZED_HORIZ)
+		cerr<<"Maximize Horiz"<<endl;
+	if (state & WIN_STATE_HIDDEN)
+		cerr<<"Hidden"<<endl;
+	if (state & WIN_STATE_HID_WORKSPACE)
+		cerr<<"HID Workspace"<<endl;
+	if (state & WIN_STATE_HID_TRANSIENT)
+		cerr<<"HID Transient"<<endl;
+	if (state & WIN_STATE_FIXED_POSITION)
+		cerr<<"Fixed Position"<<endl;
+	if (state & WIN_STATE_ARRANGE_IGNORE)
+		cerr<<"Arrange Ignore"<<endl;			
+	*/
+}
+
+void Gnome::setLayer(GnomeLayer layer) {
+	FluxboxWindow::WinLayer winlayer;
+	
+	switch (layer) {
+		case WIN_LAYER_DESKTOP:
+			winlayer = FluxboxWindow::LAYER_BOTTOM;
+		break;
+		case WIN_LAYER_BELOW:
+			winlayer = FluxboxWindow::LAYER_BELOW;
+		break;
+		case WIN_LAYER_NORMAL:
+			winlayer = FluxboxWindow::LAYER_NORMAL;
+		break;		
+		case WIN_LAYER_ONTOP:
+		case WIN_LAYER_DOCK:
+		case WIN_LAYER_ABOVE_DOCK:
+		case WIN_LAYER_MENU:
+			winlayer = FluxboxWindow::LAYER_TOP;
+		break;
+		default:
+			winlayer = FluxboxWindow::LAYER_NORMAL;
+		break;
+	}
+}
+
+void Gnome::createAtoms() {
+	Display *disp = BaseDisplay::getXDisplay();
+	m_gnome_wm_win_layer = XInternAtom(disp, "_WIN_LAYER", False);
+	m_gnome_wm_win_state = XInternAtom(disp, "_WIN_STATE", False);
+	m_gnome_wm_win_hints = XInternAtom(disp, "_WIN_HINTS", False);
+	m_gnome_wm_win_app_state = XInternAtom(disp, "_WIN_APP_STATE", False);
+	m_gnome_wm_win_expanded_size = XInternAtom(disp, "_WIN_EXPANDED_SIZE", False);
+	m_gnome_wm_win_icons = XInternAtom(disp, "_WIN_ICONS", False);
+	m_gnome_wm_win_workspace = XInternAtom(disp, "_WIN_WORKSPACE", False);
+	m_gnome_wm_win_workspace_count = XInternAtom(disp, "_WIN_WORKSPACE_COUNT", False);
+	m_gnome_wm_win_workspace_names = XInternAtom(disp, "_WIN_WORKSPACE_NAMES", False);
+	m_gnome_wm_win_client_list = XInternAtom(disp, "_WIN_CLIENT_LIST", False);
+	m_gnome_wm_prot = XInternAtom(disp, "_WIN_PROTOCOLS", False);
+	m_gnome_wm_supporting_wm_check = XInternAtom(disp, "_WIN_SUPPORTING_WM_CHECK", False);
+}

@@ -0,0 +1,96 @@ 
+// Gnome.hh for fluxbox
+// 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: Gnome.hh,v 1.1 2002/09/07 20:32:44 fluxgen Exp $
+
+#ifndef GNOME_HH
+#define GNOME_HH
+
+#include "AtomHandler.hh"
+
+#include <X11/Xatom.h>
+#include <vector>
+
+class Gnome:public AtomHandler {
+public:
+	enum GnomeLayer { 
+		WIN_LAYER_DESKTOP = 0,
+		WIN_LAYER_BELOW = 2,
+		WIN_LAYER_NORMAL = 4,
+		WIN_LAYER_ONTOP = 6,
+		WIN_LAYER_DOCK = 8,
+		WIN_LAYER_ABOVE_DOCK = 10,
+		WIN_LAYER_MENU = 12
+	};
+
+	enum GnomeState {
+		WIN_STATE_STICKY          = (1<<0), // everyone knows sticky
+		WIN_STATE_MINIMIZED       = (1<<1), // Reserved - definition is unclear
+		WIN_STATE_MAXIMIZED_VERT  = (1<<2), // window in maximized V state
+		WIN_STATE_MAXIMIZED_HORIZ = (1<<3), // window in maximized H state
+		WIN_STATE_HIDDEN          = (1<<4), // not on taskbar but window visible
+		WIN_STATE_SHADED          = (1<<5), // shaded (MacOS / Afterstep style)
+		WIN_STATE_HID_WORKSPACE   = (1<<6), // not on current desktop
+		WIN_STATE_HID_TRANSIENT   = (1<<7), // owner of transient is hidden
+		WIN_STATE_FIXED_POSITION  = (1<<8), // window is fixed in position even
+		WIN_STATE_ARRANGE_IGNORE  = (1<<9)  // ignore for auto arranging
+	};
+
+	enum GnomeHints {
+		WIN_HINTS_SKIP_FOCUS      = (1<<0), // skip this window
+		WIN_HINTS_SKIP_WINLIST    = (1<<1), // do not show in window list
+		WIN_HINTS_SKIP_TASKBAR    = (1<<2), // do not show on taskbar
+		WIN_HINTS_GROUP_TRANSIENT = (1<<3), // Reserved - definition is unclear
+		WIN_HINTS_FOCUS_ON_CLICK  = (1<<4)  // app only accepts focus if clicked
+	};
+	
+	Gnome();
+	~Gnome();
+	void initForScreen(const BScreen &screen);
+
+	void updateClientList(const BScreen &screen);
+	void updateWorkspaceNames(const BScreen &screen);
+	void updateCurrentWorkspace(const BScreen &screen);
+	void updateWorkspaceCount(const BScreen &screen);
+
+	void updateState(FluxboxWindow *win);
+	void updateHints(FluxboxWindow *win);
+	void updateWorkspace(FluxboxWindow *win);
+
+
+	bool checkClientMessage(const XClientMessageEvent &ce, BScreen *screen, FluxboxWindow *win);
+	
+private:
+	void setLayer(GnomeLayer layer);
+	void setState(FluxboxWindow *win, int state);
+	void setLayer(int layer);
+	void createAtoms();
+	Atom m_gnome_wm_win_layer, m_gnome_wm_win_state, m_gnome_wm_win_hints,
+		m_gnome_wm_win_app_state, m_gnome_wm_win_expanded_size,
+		m_gnome_wm_win_icons, m_gnome_wm_win_workspace,
+		m_gnome_wm_win_workspace_count, m_gnome_wm_win_workspace_names,
+		m_gnome_wm_win_client_list;
+	Atom m_gnome_wm_prot;
+	Atom m_gnome_wm_supporting_wm_check;	
+	std::vector<Window> m_gnomewindows;
+};
+
+#endif // GNOME_HH

@@ -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 2002/09/07 20:30:45 fluxgen Exp $
+
+#include "Observer.hh"
+#include "Subject.hh"
+
+namespace FbTk {
+
+Observer::~Observer() {
+	Subject::removeObserver(this); // make sure no subject has this observer attached
+}
+
+};

@@ -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 2002/09/07 20:30:45 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

@@ -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 2002/09/07 20:30:45 fluxgen Exp $
+
+#include "Subject.hh"
+#include "Observer.hh"
+
+#include <algorithm>
+#include <functional>
+
+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

@@ -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 2002/09/07 20:30:45 fluxgen Exp $
+
+#ifndef FBTK_SUBJECT_HH
+#define FBTK_SUBJECT_HH
+
+#include <vector>
+
+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::vector<Observer *> ObserverList;
+	ObserverList m_observerlist;
+
+	typedef std::vector<Subject *> SubjectList;
+	static SubjectList s_subjectlist;
+};
+
+}; // end namespace FbTk
+
+#endif // FBTK_SUBJECT_HH