1/* (C)opyright MMVI-MMVII Anselm R. Garbe <garbeam at gmail dot com>
  2 * See LICENSE file for license details.
  3 */
  4#include "dwm.h"
  5
  6/* extern */
  7
  8void (*arrange)(void) = DEFMODE;
  9
 10void
 11attach(Client *c) {
 12	if(clients)
 13		clients->prev = c;
 14	c->next = clients;
 15	clients = c;
 16}
 17
 18void
 19attachstack(Client *c) {
 20	c->snext = stack;
 21	stack = c;
 22}
 23
 24void
 25dofloat(void) {
 26	Client *c;
 27
 28	for(c = clients; c; c = c->next) {
 29		if(isvisible(c)) {
 30			if(c->isbanned)
 31				XMoveWindow(dpy, c->win, c->x, c->y);
 32			c->isbanned = False;
 33			resize(c, c->x, c->y, c->w, c->h, True);
 34		}
 35		else {
 36			c->isbanned = True;
 37			XMoveWindow(dpy, c->win, c->x + 2 * sw, c->y);
 38		}
 39	}
 40	if(!sel || !isvisible(sel)) {
 41		for(c = stack; c && !isvisible(c); c = c->snext);
 42		focus(c);
 43	}
 44	restack();
 45}
 46
 47void
 48detach(Client *c) {
 49	if(c->prev)
 50		c->prev->next = c->next;
 51	if(c->next)
 52		c->next->prev = c->prev;
 53	if(c == clients)
 54		clients = c->next;
 55	c->next = c->prev = NULL;
 56}
 57
 58void
 59detachstack(Client *c) {
 60	Client **tc;
 61	for(tc=&stack; *tc && *tc != c; tc=&(*tc)->snext);
 62	*tc = c->snext;
 63}
 64
 65void
 66focusnext(Arg *arg) {
 67	Client *c;
 68   
 69	if(!sel)
 70		return;
 71	for(c = sel->next; c && !isvisible(c); c = c->next);
 72	if(!c)
 73		for(c = clients; c && !isvisible(c); c = c->next);
 74	if(c) {
 75		focus(c);
 76		restack();
 77	}
 78}
 79
 80void
 81focusprev(Arg *arg) {
 82	Client *c;
 83
 84	if(!sel)
 85		return;
 86	for(c = sel->prev; c && !isvisible(c); c = c->prev);
 87	if(!c) {
 88		for(c = clients; c && c->next; c = c->next);
 89		for(; c && !isvisible(c); c = c->prev);
 90	}
 91	if(c) {
 92		focus(c);
 93		restack();
 94	}
 95}
 96
 97Client *
 98getclient(Window w) {
 99	Client *c;
100
101	for(c = clients; c; c = c->next)
102		if(c->win == w)
103			return c;
104	return NULL;
105}
106
107Bool
108isvisible(Client *c) {
109	unsigned int i;
110
111	for(i = 0; i < ntags; i++)
112		if(c->tags[i] && seltag[i])
113			return True;
114	return False;
115}
116
117Client *
118nextmanaged(Client *c) {
119	for(; c && (c->isfloat || !isvisible(c)); c = c->next);
120	return c;
121}
122
123void
124restack(void) {
125	Client *c;
126	XEvent ev;
127
128	drawstatus();
129	if(!sel)
130		return;
131	if(sel->isfloat || arrange == dofloat)
132		XRaiseWindow(dpy, sel->win);
133	if(arrange != dofloat) {
134		if(!sel->isfloat)
135			XLowerWindow(dpy, sel->win);
136		for(c = nextmanaged(clients); c; c = nextmanaged(c->next)) {
137			if(c == sel)
138				continue;
139			XLowerWindow(dpy, c->win);
140		}
141	}
142	XSync(dpy, False);
143	while(XCheckMaskEvent(dpy, EnterWindowMask, &ev));
144}
145
146void
147togglefloat(Arg *arg) {
148	if(!sel || arrange == dofloat)
149		return;
150	sel->isfloat = !sel->isfloat;
151	arrange();
152}
153
154void
155togglemode(Arg *arg) {
156	arrange = (arrange == dofloat) ? dotile : dofloat;
157	if(sel)
158		arrange();
159	else
160		drawstatus();
161}
162
163void
164toggleview(Arg *arg) {
165	unsigned int i;
166
167	seltag[arg->i] = !seltag[arg->i];
168	for(i = 0; i < ntags && !seltag[i]; i++);
169	if(i == ntags)
170		seltag[arg->i] = True; /* cannot toggle last view */
171	arrange();
172}
173
174void
175view(Arg *arg) {
176	unsigned int i;
177
178	for(i = 0; i < ntags; i++)
179		seltag[i] = (arg->i == -1) ? True : False;
180	if(arg->i >= 0 && arg->i < ntags)
181		seltag[arg->i] = True;
182	arrange();
183}
184