6 files changed, 623 insertions, 0 deletions
diff --git a/src/Gnome.cc b/src/Gnome.cc
new file mode 100644
index 0000000..9a5d9cb
--- /dev/null
+++ b/src/Gnome.cc
@@ -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);
+}
diff --git a/src/Gnome.hh b/src/Gnome.hh
new file mode 100644
index 0000000..abdd8bf
--- /dev/null
+++ b/src/Gnome.hh
@@ -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
diff --git a/src/Observer.cc b/src/Observer.cc
new file mode 100644
index 0000000..1a3d553
--- /dev/null
+++ b/src/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 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
+}
+};
diff --git a/src/Observer.hh b/src/Observer.hh
new file mode 100644
index 0000000..8a93e1d
--- /dev/null
+++ b/src/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 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
diff --git a/src/Subject.cc b/src/Subject.cc
new file mode 100644
index 0000000..3e9618b
--- /dev/null
+++ b/src/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 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
diff --git a/src/Subject.hh b/src/Subject.hh
new file mode 100644
index 0000000..95c64f2
--- /dev/null
+++ b/src/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 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