events.c

/*
        This program is free software; you can redistribute it and/or modify
        it under the terms of the GNU General Public License as published by
        the Free Software Foundation; You may only use version 2 of the License,
        you have no option to use any other version.

        This program is distributed in the hope that it will be useful,
        but WITHOUT ANY WARRANTY; without even the implied warranty of
        MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
        GNU General Public License for more details.

        You should have received a copy of the GNU General Public License
        along with this program; if not, write to the Free Software
        Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.

        oroborus - (c) 2001 Ken Lynch
        xfwm4    - (c) 2002 Olivier Fourdan

 */

#ifdef HAVE_CONFIG_H
#  include "config.h"
#endif

#include <X11/Xlib.h>
#include <X11/Xatom.h>
#include <gtk/gtk.h>
#include <gdk/gdk.h>
#include <gdk/gdkx.h>
#include <libxfcegui4/libxfcegui4.h>
#include "main.h"
#include "workspaces.h"
#include "settings.h"
#include "mywindow.h"
#include "frame.h"
#include "client.h"
#include "menu.h"
#include "startup_notification.h"
#include "debug.h"
#include "my_intl.h"

static guint raise_timeout = 0;
static gulong button_handler_id = 0;
static GdkAtom atom_rcfiles = GDK_NONE;
static Window menu_event_window = None;

static void menu_callback(Menu * menu, MenuOp op, Window client_xwindow, gpointer menu_data, gpointer item_data);
static gboolean show_popup_cb(GtkWidget * widget, GdkEventButton * ev, gpointer data);
static gboolean client_event_cb(GtkWidget * widget, GdkEventClient * ev);

typedef enum
{
    XFWM_BUTTON_UNDEFINED = 0,
    XFWM_BUTTON_DRAG = 1,
    XFWM_BUTTON_CLICK = 2,
    XFWM_BUTTON_CLICK_AND_DRAG = 3,
    XFWM_BUTTON_DOUBLE_CLICK = 4
}
XfwmButtonClickType;

static inline XfwmButtonClickType typeOfClick(Window w, XEvent * ev, gboolean allow_double_click)
{
    unsigned int button;
    int xcurrent, ycurrent, x, y, total;
    int g = GrabSuccess;
    int clicks;
    Time t0, t1;

    g_return_val_if_fail(ev != NULL, XFWM_BUTTON_UNDEFINED);
    g_return_val_if_fail(w != None, XFWM_BUTTON_UNDEFINED);

    g = XGrabPointer(dpy, w, False, ButtonMotionMask | PointerMotionMask | PointerMotionHintMask | ButtonPressMask | ButtonReleaseMask, GrabModeAsync, GrabModeAsync, None, None, ev->xbutton.time);
    if(g != GrabSuccess)
    {
        DBG("grab failed in typeOfClick\n");
        gdk_beep();
        return XFWM_BUTTON_UNDEFINED;
    }

    button = ev->xbutton.button;
    x = xcurrent = ev->xbutton.x_root;
    y = ycurrent = ev->xbutton.y_root;
    t0 = ev->xbutton.time;
    t1 = t0;
    total = 0;
    clicks = 1;

    while((ABS(x - xcurrent) < 1) && (ABS(y - ycurrent) < 1) && (total < params.dbl_click_time) && ((t1 - t0) < params.dbl_click_time))
    {
        g_usleep(10000);
        total += 10;
        if(XCheckMaskEvent(dpy, ButtonReleaseMask | ButtonPressMask, ev))
        {
            if(ev->xbutton.button == button)
            {
                clicks++;
            }
            t1 = ev->xbutton.time;
        }
        if(XCheckMaskEvent(dpy, ButtonMotionMask | PointerMotionMask | PointerMotionHintMask, ev))
        {
            xcurrent = ev->xmotion.x_root;
            ycurrent = ev->xmotion.y_root;
            t1 = ev->xmotion.time;
        }
        if((XfwmButtonClickType) clicks == XFWM_BUTTON_DOUBLE_CLICK || (!allow_double_click && (XfwmButtonClickType) clicks == XFWM_BUTTON_CLICK))
        {
            break;
        }
    }
    XUngrabPointer(dpy, ev->xbutton.time);
    return (XfwmButtonClickType) clicks;
}

static void clear_timeout(void)
{
    if(raise_timeout)
    {
        gtk_timeout_remove(raise_timeout);
        raise_timeout = 0;
    }
}

static gboolean raise_cb(gpointer data)
{
    Client *c;
    DBG("entering raise_cb\n");

    clear_timeout();
    c = clientGetFocus();
    if(c)
    {
        clientRaise(c);
    }
    return (TRUE);
}

static void reset_timeout(void)
{
    if(raise_timeout)
    {
        gtk_timeout_remove(raise_timeout);
    }
    raise_timeout = gtk_timeout_add(params.raise_delay, (GtkFunction) raise_cb, NULL);
}

static inline void _moveRequest(Client * c, XEvent * ev)
{
    if(CLIENT_FLAG_TEST_AND_NOT(c, CLIENT_FLAG_HAS_BORDER | CLIENT_FLAG_HAS_MOVE, CLIENT_FLAG_FULLSCREEN))
    {
        clientMove(c, ev);
    }
}

static inline void _resizeRequest(Client * c, int corner, XEvent * ev)
{
    clientSetFocus(c, True);

    if(CLIENT_FLAG_TEST_ALL(c, CLIENT_FLAG_HAS_RESIZE | CLIENT_FLAG_IS_RESIZABLE))
    {
        clientResize(c, corner, ev);
    }
    else if(CLIENT_FLAG_TEST_AND_NOT(c, CLIENT_FLAG_HAS_BORDER | CLIENT_FLAG_HAS_MOVE, CLIENT_FLAG_FULLSCREEN))
    {
        clientMove(c, ev);
    }
}

static inline void spawn_shortcut(int i)
{
    GError *error = NULL;
    if((i >= NB_KEY_SHORTCUTS) || (!params.shortcut_exec[i]) || !strlen(params.shortcut_exec[i]))
    {
        return;
    }
    if(!g_spawn_command_line_async(params.shortcut_exec[i], &error))
    {
        if(error)
        {
            g_warning("%s: %s", g_get_prgname(), error->message);
            g_error_free(error);
        }
    }
}

static inline void handleKeyPress(XKeyEvent * ev)
{
    Client *c;
    int state, key;
    XEvent e;

    DBG("entering handleKeyEvent\n");

    c = clientGetFocus();
    state = ev->state & (ShiftMask | ControlMask | AltMask | MetaMask | SuperMask | HyperMask);
    for(key = 0; key < KEY_COUNT; key++)
    {
        if((params.keys[key].keycode == ev->keycode) && (params.keys[key].modifier == state))
        {
            break;
        }
    }

    if(c)
    {
        switch (key)
        {
            case KEY_MOVE_UP:
            case KEY_MOVE_DOWN:
            case KEY_MOVE_LEFT:
            case KEY_MOVE_RIGHT:
                _moveRequest(c, (XEvent *) ev);
                break;
            case KEY_RESIZE_UP:
            case KEY_RESIZE_DOWN:
            case KEY_RESIZE_LEFT:
            case KEY_RESIZE_RIGHT:
                if(CLIENT_FLAG_TEST_ALL(c, CLIENT_FLAG_HAS_RESIZE | CLIENT_FLAG_IS_RESIZABLE))
                {
                    clientResize(c, CORNER_BOTTOM_RIGHT, (XEvent *) ev);
                }
                break;
            case KEY_CYCLE_WINDOWS:
                clientCycle(c);
                break;
            case KEY_CLOSE_WINDOW:
                clientClose(c);
                break;
            case KEY_HIDE_WINDOW:
                if(CLIENT_CAN_HIDE_WINDOW(c))
                {
                    clientHide(c, True);
                }
                break;
            case KEY_MAXIMIZE_WINDOW:
                if(CLIENT_CAN_MAXIMIZE_WINDOW(c))
                {
                    clientToggleMaximized(c, WIN_STATE_MAXIMIZED);
                }
                break;
            case KEY_MAXIMIZE_VERT:
                if(CLIENT_CAN_MAXIMIZE_WINDOW(c))
                {
                    clientToggleMaximized(c, WIN_STATE_MAXIMIZED_VERT);
                }
                break;
            case KEY_MAXIMIZE_HORIZ:
                if(CLIENT_CAN_MAXIMIZE_WINDOW(c))
                {
                    clientToggleMaximized(c, WIN_STATE_MAXIMIZED_HORIZ);
                }
                break;
            case KEY_SHADE_WINDOW:
                clientToggleShaded(c);
                break;
            case KEY_STICK_WINDOW:
                if(CLIENT_FLAG_TEST(c, CLIENT_FLAG_HAS_STICK))
                {
                    clientToggleSticky(c, TRUE);
                }
                break;
            case KEY_MOVE_NEXT_WORKSPACE:
                workspaceSwitch(workspace + 1, c);
                break;
            case KEY_MOVE_PREV_WORKSPACE:
                workspaceSwitch(workspace - 1, c);
                break;
            case KEY_MOVE_WORKSPACE_1:
                workspaceSwitch(0, c);
                break;
            case KEY_MOVE_WORKSPACE_2:
                workspaceSwitch(1, c);
                break;
            case KEY_MOVE_WORKSPACE_3:
                workspaceSwitch(2, c);
                break;
            case KEY_MOVE_WORKSPACE_4:
                workspaceSwitch(3, c);
                break;
            case KEY_MOVE_WORKSPACE_5:
                workspaceSwitch(4, c);
                break;
            case KEY_MOVE_WORKSPACE_6:
                workspaceSwitch(5, c);
                break;
            case KEY_MOVE_WORKSPACE_7:
                workspaceSwitch(6, c);
                break;
            case KEY_MOVE_WORKSPACE_8:
                workspaceSwitch(7, c);
                break;
            case KEY_MOVE_WORKSPACE_9:
                workspaceSwitch(8, c);
                break;
            default:
                break;
        }
    }
    else
    {
        switch (key)
        {
            case KEY_CYCLE_WINDOWS:
                if(clients)
                {
                    clientCycle(clients->prev);
                }
                break;
            default:
                break;
        }
    }
    switch (key)
    {
        case KEY_NEXT_WORKSPACE:
            workspaceSwitch(workspace + 1, NULL);
            break;
        case KEY_PREV_WORKSPACE:
            workspaceSwitch(workspace - 1, NULL);
            break;
        case KEY_ADD_WORKSPACE:
            workspaceSetCount(params.workspace_count + 1);
            break;
        case KEY_DEL_WORKSPACE:
            workspaceSetCount(params.workspace_count - 1);
            break;
        case KEY_WORKSPACE_1:
            workspaceSwitch(0, NULL);
            break;
        case KEY_WORKSPACE_2:
            workspaceSwitch(1, NULL);
            break;
        case KEY_WORKSPACE_3:
            workspaceSwitch(2, NULL);
            break;
        case KEY_WORKSPACE_4:
            workspaceSwitch(3, NULL);
            break;
        case KEY_WORKSPACE_5:
            workspaceSwitch(4, NULL);
            break;
        case KEY_WORKSPACE_6:
            workspaceSwitch(5, NULL);
            break;
        case KEY_WORKSPACE_7:
            workspaceSwitch(6, NULL);
            break;
        case KEY_WORKSPACE_8:
            workspaceSwitch(7, NULL);
            break;
        case KEY_WORKSPACE_9:
            workspaceSwitch(8, NULL);
            break;
        case KEY_SHORTCUT_1:
            spawn_shortcut(0);
            break;
        case KEY_SHORTCUT_2:
            spawn_shortcut(1);
            break;
        case KEY_SHORTCUT_3:
            spawn_shortcut(2);
            break;
        case KEY_SHORTCUT_4:
            spawn_shortcut(3);
            break;
        case KEY_SHORTCUT_5:
            spawn_shortcut(4);
            break;
        case KEY_SHORTCUT_6:
            spawn_shortcut(5);
            break;
        case KEY_SHORTCUT_7:
            spawn_shortcut(6);
            break;
        case KEY_SHORTCUT_8:
            spawn_shortcut(7);
            break;
        case KEY_SHORTCUT_9:
            spawn_shortcut(8);
            break;
        case KEY_SHORTCUT_10:
            spawn_shortcut(9);
            break;
        default:
            break;
    }
    while(XCheckTypedEvent(dpy, EnterNotify, &e));
}

/* User has clicked on an edge or corner.
 * Button 1 : Raise and resize
 * Button 2 : Move
 * Button 3 : Resize
 */
static inline void _edgeButton(Client * c, int part, XButtonEvent * ev)
{
    if(ev->button == Button2)
    {
        XfwmButtonClickType tclick;

        tclick = typeOfClick(c->frame, (XEvent *) ev, FALSE);

        if(tclick == XFWM_BUTTON_CLICK)
        {
            clientLower(c);
        }
        else
        {
            _moveRequest(c, (XEvent *) ev);
        }
    }
    else
    {
        if(ev->button == Button1)
            clientRaise(c);
        if(ev->button == Button1 || ev->button == Button3)
            _resizeRequest(c, part, (XEvent *) ev);
    }
}

static inline void handleButtonPress(XButtonEvent * ev)
{
    Client *c;
    Window win;
    int state, replay = False;

    DBG("entering handleButtonPress\n");

    /* Clear timeout */
    clear_timeout();

    c = clientGetFromWindow(ev->window, ANY);
    if(c)
    {
        state = ev->state & (ShiftMask | ControlMask | AltMask | MetaMask | SuperMask | HyperMask);
        win = ev->subwindow;

        if((win == MYWINDOW_XWINDOW(c->buttons[HIDE_BUTTON]) || (win == MYWINDOW_XWINDOW(c->buttons[CLOSE_BUTTON])) || (win == MYWINDOW_XWINDOW(c->buttons[MAXIMIZE_BUTTON])) || (win == MYWINDOW_XWINDOW(c->buttons[SHADE_BUTTON])) || (win == MYWINDOW_XWINDOW(c->buttons[STICK_BUTTON]))))
        {
            clientSetFocus(c, True);
            if(params.raise_on_click)
            {
                clientRaise(c);
            }
            clientButtonPress(c, win, ev);
        }
        else if(((win == MYWINDOW_XWINDOW(c->title)) && (ev->button == Button3)) || ((win == MYWINDOW_XWINDOW(c->buttons[MENU_BUTTON])) && (ev->button == Button1)))
        {
            /*
               We need to copy the event to keep the original event untouched
               for gtk to handle it (in case we open up the menu)
             */
            XEvent copy_event = (XEvent) * ev;
            XfwmButtonClickType tclick;

            tclick = typeOfClick(c->frame, &copy_event, win == MYWINDOW_XWINDOW(c->buttons[MENU_BUTTON]));

            if(tclick == XFWM_BUTTON_DOUBLE_CLICK)
            {
                clientClose(c);
            }
            else if(ev->button == Button3 && (tclick == XFWM_BUTTON_DRAG))
            {
                _moveRequest(c, (XEvent *) ev);
            }
            else
            {
                clientSetFocus(c, True);
                if(params.raise_on_click)
                {
                    clientRaise(c);
                }
                ev->window = ev->root;
                if(button_handler_id)
                {
                    g_signal_handler_disconnect(GTK_OBJECT(getDefaultGtkWidget()), button_handler_id);
                }
                button_handler_id = g_signal_connect(GTK_OBJECT(getDefaultGtkWidget()), "button_press_event", GTK_SIGNAL_FUNC(show_popup_cb), (gpointer) c);
                /* Let GTK handle this for us. */
            }
        }
        else if(((win == MYWINDOW_XWINDOW(c->title)) && ((ev->button == Button1) && (state == 0))) || ((ev->button == Button1) && (state == AltMask)))
        {
            XEvent copy_event = (XEvent) * ev;
            XfwmButtonClickType tclick;

            clientSetFocus(c, True);
            clientRaise(c);
            tclick = typeOfClick(c->frame, &copy_event, TRUE);
            if((tclick == XFWM_BUTTON_DRAG) || (tclick == XFWM_BUTTON_CLICK_AND_DRAG))
            {
                _moveRequest(c, (XEvent *) ev);
            }
            else if(tclick == XFWM_BUTTON_DOUBLE_CLICK)
            {
                switch (params.double_click_action)
                {
                    case ACTION_MAXIMIZE:
                        if(CLIENT_CAN_MAXIMIZE_WINDOW(c))
                        {
                            clientToggleMaximized(c, WIN_STATE_MAXIMIZED);
                        }
                        break;
                    case ACTION_SHADE:
                        clientToggleShaded(c);
                        break;
                    case ACTION_HIDE:
                        if(CLIENT_CAN_HIDE_WINDOW(c))
                        {
                            clientHide(c, True);
                        }
                        break;
                }
            }
        }
        else if((win == MYWINDOW_XWINDOW(c->corners[CORNER_TOP_LEFT])) && (state == 0))
        {
            _edgeButton(c, CORNER_TOP_LEFT, ev);
        }
        else if((win == MYWINDOW_XWINDOW(c->corners[CORNER_TOP_RIGHT])) && (state == 0))
        {
            _edgeButton(c, CORNER_TOP_RIGHT, ev);
        }
        else if((win == MYWINDOW_XWINDOW(c->corners[CORNER_BOTTOM_LEFT])) && (state == 0))
        {
            _edgeButton(c, CORNER_BOTTOM_LEFT, ev);
        }
        else if((win == MYWINDOW_XWINDOW(c->corners[CORNER_BOTTOM_RIGHT])) && (state == 0))
        {
            _edgeButton(c, CORNER_BOTTOM_RIGHT, ev);
        }
        else if((win == MYWINDOW_XWINDOW(c->sides[SIDE_BOTTOM])) && (state == 0))
        {
            _edgeButton(c, 4 + SIDE_BOTTOM, ev);
        }
        else if((win == MYWINDOW_XWINDOW(c->sides[SIDE_LEFT])) && (state == 0))
        {
            _edgeButton(c, 4 + SIDE_LEFT, ev);
        }
        else if((win == MYWINDOW_XWINDOW(c->sides[SIDE_RIGHT])) && (state == 0))
        {
            _edgeButton(c, 4 + SIDE_RIGHT, ev);
        }
        else if(((ev->window != c->window) && (ev->button == Button2) && (state == 0)) || ((ev->button == Button2) && (state == (AltMask | ControlMask))))
        {
            clientLower(c);
        }
        else
        {
            if(ev->button == Button1)
            {
                clientSetFocus(c, True);
                if(params.raise_on_click)
                    clientRaise(c);
            }
            if(ev->window == c->window)
            {
                replay = True;
            }
        }

        if(replay)
        {
            XAllowEvents(dpy, ReplayPointer, ev->time);
        }
        else
        {
            XAllowEvents(dpy, SyncPointer, ev->time);
        }
    }
    else
    {
        XUngrabPointer(dpy, CurrentTime);
        XSendEvent(dpy, gnome_win, False, SubstructureNotifyMask, (XEvent *) ev);
    }
}

static inline void handleButtonRelease(XButtonEvent * ev)
{
    DBG("entering handleButtonRelease\n");

    XSendEvent(dpy, gnome_win, False, SubstructureNotifyMask, (XEvent *) ev);
}

static inline void handleDestroyNotify(XDestroyWindowEvent * ev)
{
    Client *c;

    DBG("entering handleDestroyNotify\n");

    c = clientGetFromWindow(ev->window, WINDOW);
    if(c)
    {
        clientUnframe(c, False);
        if(clients)
        {
            clientSetFocus(clientGetNext(clients->prev, 0), True);
        }
        else
        {
            clientSetFocus(NULL, True);
        }
    }
}

static inline void handleUnmapNotify(XUnmapEvent * ev)
{
    Client *c;

    DBG("entering handleUnmapNotify\n");

    c = clientGetFromWindow(ev->window, WINDOW);
    if(c)
    {
        if(c->ignore_unmap)
        {
            c->ignore_unmap--;
        }
        else
        {
            clientUnframe(c, False);
            if(clients)
            {
                clientSetFocus(clientGetNext(clients->prev, 0), True);
            }
            else
            {
                clientSetFocus(NULL, True);
            }
        }
    }
}

static inline void handleMapRequest(XMapRequestEvent * ev)
{
    Client *c;

    DBG("entering handleMapRequest\n");

    if(ev->window == None)
    {
        DBG("Mapping None ???\n");
        return;
    }
    c = clientGetFromWindow(ev->window, WINDOW);
    if(c)
    {
        clientShow(c, True);
    }
    else
    {
        clientFrame(ev->window);
    }
}

static inline void handleConfigureRequest(XConfigureRequestEvent * ev)
{
    Client *c;
    XWindowChanges wc;
    XEvent otherEvent;

    DBG("entering handleConfigureRequest\n");

    /* Compress events - logic taken from kwin */
    while(XCheckTypedWindowEvent(dpy, ev->window, ConfigureRequest, &otherEvent))
    {
        if(otherEvent.xconfigurerequest.value_mask == ev->value_mask)
        {
            ev = &otherEvent.xconfigurerequest;
        }
        else
        {
            XPutBackEvent(dpy, &otherEvent);
            break;
        }
    }

    wc.x = ev->x;
    wc.y = ev->y;
    wc.width = ev->width;
    wc.height = ev->height;
    wc.sibling = ev->above;
    wc.stack_mode = ev->detail;
    wc.border_width = ev->border_width;

    c = clientGetFromWindow(ev->window, WINDOW);
    if (!c)
    {
        /* Some app tend or try to manipulate the wm frame to achieve fullscreen mode */
	c = clientGetFromWindow(ev->window, FRAME);
	if (c)
	{
            if(ev->value_mask & CWX)
            {
		wc.x += frameLeft(c);
            }
            if(ev->value_mask & CWY)
            {
		wc.y += frameTop(c);
            }
            if(ev->value_mask & CWWidth)
            {
		wc.width -= frameLeft(c) + frameRight(c);
            }
            if(ev->value_mask & CWHeight)
            {
		wc.height -= frameTop(c) + frameBottom(c);
            }
	}
    }
    if(c)
    {
        gboolean constrained = FALSE;
        
        DBG("handleConfigureRequest managed window \"%s\" (%#lx)\n", c->name, c->window);
	if(CLIENT_FLAG_TEST(c, CLIENT_FLAG_MOVING | CLIENT_FLAG_RESIZING))
        {
            /* Sorry, but it's not the right time for configure request */
            return;
        }
        if(c->type == WINDOW_DESKTOP)
        {
            /* Ignore stacking request for DESKTOP windows */
            ev->value_mask &= ~CWStackMode;
        }
        clientCoordGravitate(c, APPLY, &wc.x, &wc.y);
        if(ev->value_mask & (CWX | CWY | CWWidth | CWHeight))
        {
            if(CLIENT_FLAG_TEST(c, CLIENT_FLAG_MAXIMIZED))
	    {
	        clientRemoveMaximizeFlag(c);
	    }
	    constrained = TRUE;
        }
        /* Let's say that if the client performs a XRaiseWindow, we show the window if hidden */
        if((ev->value_mask & CWStackMode) && (wc.stack_mode == Above) && (CLIENT_FLAG_TEST(c, CLIENT_FLAG_HIDDEN)))
        {
            clientShow(c, True);
            if(params.focus_new && clientAcceptFocus(c))
            {
                clientSetFocus(c, True);
            }
        }
        clientConfigure(c, &wc, ev->value_mask, constrained);
    }
    else
    {
        XConfigureWindow(dpy, ev->window, ev->value_mask, &wc);
    }
}

static inline void handleEnterNotify(XCrossingEvent * ev)
{
    Client *c;

    DBG("entering handleEnterNotify\n");

    while(XCheckTypedEvent(dpy, EnterNotify, (XEvent *) ev));

    DBG("EnterNotify window is (%#lx)\n", ev->window);

    c = clientGetFromWindow(ev->window, FRAME);
    if(c && !(params.click_to_focus) && (clientAcceptFocus(c)))
    {
        DBG("EnterNotify window is \"%s\"\n", c->name);
        if((c->type != WINDOW_DOCK) && (c->type != WINDOW_DESKTOP))
        {
            clientSetFocus(c, True);
        }
    }
}

static inline void handleFocusIn(XFocusChangeEvent * ev)
{
    Client *c;

    DBG("entering handleFocusIn\n");
    DBG("FocusIn window is (%#lx)\n", ev->window);

    if(ev->window == gnome_win)
    {
        /* Don't get fooled by our own gtk window ! */
        return;
    }

    c = clientGetFromWindow(ev->window, WINDOW);
    if(c)
    {
        DBG("focus set to \"%s\" (%#lx)\n", c->name, c->window);
        clientUpdateFocus(c);
        frameDraw(c, FALSE, FALSE);
        if(params.raise_on_focus && !params.click_to_focus)
        {
            reset_timeout();
        }
    }
    else if(clients)
    {
        DBG("focus set to top window in list\n");
        clientSetFocus(clientGetNext(clients->prev, 0), True);
    }
    else
    {
        DBG("focus set to default fallback window\n");
        clientSetFocus(NULL, True);
    }
}

static inline void handleFocusOut(XFocusChangeEvent * ev)
{
    DBG("entering handleFocusOut\n");
}

static inline void handlePropertyNotify(XPropertyEvent * ev)
{
    Client *c;
    long dummy;

    DBG("entering handlePropertyNotify\n");

    c = clientGetFromWindow(ev->window, WINDOW);
    if(c)
    {
        if(ev->atom == XA_WM_NORMAL_HINTS)
        {
            unsigned long previous_value;

            DBG("client \"%s\" (%#lx) has received a XA_WM_NORMAL_HINTS notify\n", c->name, c->window);
            XGetWMNormalHints(dpy, c->window, c->size, &dummy);
            previous_value = CLIENT_FLAG_TEST(c, CLIENT_FLAG_IS_RESIZABLE);
            CLIENT_FLAG_UNSET(c, CLIENT_FLAG_IS_RESIZABLE);
            if(((c->size->flags & (PMinSize | PMaxSize)) != (PMinSize | PMaxSize)) || (((c->size->flags & (PMinSize | PMaxSize)) == (PMinSize | PMaxSize)) && ((c->size->min_width < c->size->max_width) || (c->size->min_height < c->size->max_height))))
            {
                CLIENT_FLAG_SET(c, CLIENT_FLAG_IS_RESIZABLE);
            }
            if(CLIENT_FLAG_TEST(c, CLIENT_FLAG_IS_RESIZABLE) != previous_value)
            {
                frameDraw(c, TRUE, FALSE);
            }
        }
        else if((ev->atom == XA_WM_NAME) || (ev->atom == net_wm_name))
        {
            DBG("client \"%s\" (%#lx) has received a XA_WM_NAME notify\n", c->name, c->window);
            if(c->name)
            {
                free(c->name);
            }
            getWindowName(dpy, c->window, &c->name);
            CLIENT_FLAG_SET(c, CLIENT_FLAG_NAME_CHANGED);
            frameDraw(c, TRUE, FALSE);
        }
        else if(ev->atom == motif_wm_hints)
        {
            XWindowChanges wc;

            DBG("client \"%s\" (%#lx) has received a motif_wm_hints notify\n", c->name, c->window);
            clientUpdateMWMHints(c);
            wc.x = c->x;
            wc.y = c->y;
            wc.width = c->width;
            wc.height = c->height;
            clientConfigure(c, &wc, CWX | CWY | CWWidth | CWHeight, FALSE);
        }
        else if(ev->atom == XA_WM_HINTS)
        {
            DBG("client \"%s\" (%#lx) has received a XA_WM_HINTS notify\n", c->name, c->window);
            c->wmhints = XGetWMHints(dpy, c->window);
            if(c->wmhints)
            {
                c->group_leader = c->wmhints->window_group;
            }
        }
        else if(ev->atom == win_hints)
        {
            DBG("client \"%s\" (%#lx) has received a win_hints notify\n", c->name, c->window);
            getGnomeHint(dpy, c->window, win_hints, &c->win_hints);
        }
        else if(ev->atom == win_layer)
        {
            DBG("client \"%s\" (%#lx) has received a win_layer notify\n", c->name, c->window);
            getGnomeHint(dpy, c->window, win_layer, &dummy);
            clientSetLayer(c, dummy);
            clientSetNetState(c);
        }
        else if(ev->atom == net_wm_window_type)
        {
            DBG("client \"%s\" (%#lx) has received a net_wm_window_type notify\n", c->name, c->window);
            clientGetNetWmType(c);
            frameDraw(c, TRUE, FALSE);
        }
        else if((ev->atom == win_workspace) && !(c->transient_for))
        {
            DBG("client \"%s\" (%#lx) has received a win_workspace notify\n", c->name, c->window);
            getGnomeHint(dpy, c->window, win_workspace, &dummy);
            clientSetWorkspace(c, dummy, TRUE);
        }
        else if(ev->atom == net_wm_strut)
        {
            DBG("client \"%s\" (%#lx) has received a net_wm_strut notify\n", c->name, c->window);
            clientGetNetStruts(c);
        }
        else if(ev->atom == wm_colormap_windows)
        {
            clientUpdateColormaps(c);
            if(c == clientGetFocus())
            {
                clientInstallColormaps(c);
            }
        }
#ifdef HAVE_STARTUP_NOTIFICATION
        else if(ev->atom == net_startup_id)
        {
            if(c->startup_id)
            {
                free(c->startup_id);
                c->startup_id = NULL;
            }
            getWindowStartupId(dpy, c->window, &c->startup_id);
        }
#endif
    }
    else
    {
        if(ev->atom == win_workspace_count)
        {
            DBG("root has received a win_workspace_count notify\n");
            getGnomeHint(dpy, root, win_workspace_count, &dummy);
            workspaceSetCount(dummy);
        }
        else if(ev->atom == gnome_panel_desktop_area)
        {
            DBG("root has received a gnome_panel_desktop_area notify\n");
            getGnomeDesktopMargins(dpy, screen, gnome_margins);
            workspaceUpdateArea(margins, gnome_margins);
        }
    }
}

static inline void handleClientMessage(XClientMessageEvent * ev)
{
    Client *c;

    DBG("entering handleClientMessage\n");

    c = clientGetFromWindow(ev->window, WINDOW);
    if(c)
    {
        if((ev->message_type == wm_change_state) && (ev->format == 32) && (ev->data.l[0] == IconicState))
        {
            DBG("client \"%s\" (%#lx) has received a wm_change_state event\n", c->name, c->window);
            if(CLIENT_CAN_HIDE_WINDOW(c))
            {
                clientHide(c, True);
            }
        }
        else if((ev->message_type == win_state) && (ev->format == 32) && (ev->data.l[0] & WIN_STATE_SHADED))
        {
            DBG("client \"%s\" (%#lx) has received a win_state/shaded event\n", c->name, c->window);
            if(ev->data.l[1] == WIN_STATE_SHADED)
            {
                clientShade(c);
            }
            else
            {
                clientUnshade(c);
            }
            clientToggleShaded(c);
        }
        else if((ev->message_type == win_state) && (ev->format == 32) && (ev->data.l[0] & WIN_STATE_STICKY))
        {
            DBG("client \"%s\" (%#lx) has received a win_state/stick event\n", c->name, c->window);
            if(CLIENT_FLAG_TEST(c, CLIENT_FLAG_HAS_STICK))
            {
                if(ev->data.l[1] == WIN_STATE_STICKY)
                {
                    clientStick(c, TRUE);
                }
                else
                {
                    clientUnstick(c, TRUE);
                }
            }
        }
        else if((ev->message_type == win_layer) && (ev->format == 32))
        {
            DBG("client \"%s\" (%#lx) has received a win_layer event\n", c->name, c->window);
            clientSetLayer(c, ev->data.l[0]);
        }
        else if((ev->message_type == win_workspace) && (ev->format == 32) && !(c->transient_for))
        {
            DBG("client \"%s\" (%#lx) has received a win_workspace event\n", c->name, c->window);
            clientSetWorkspace(c, ev->data.l[0], TRUE);
        }
        else if((ev->message_type == net_wm_desktop) && (ev->format == 32))
        {
            DBG("client \"%s\" (%#lx) has received a net_wm_desktop event\n", c->name, c->window);
            if((ev->data.l[0] == (int)0xFFFFFFFF) && CLIENT_FLAG_TEST(c, CLIENT_FLAG_HAS_STICK))
            {
                clientStick(c, TRUE);
            }