dwm/stackctl.c

#include "dwm.h"
#include "stackctl.h"

// From http://dwm.suckless.org/patches/movestack
// Copyright:
//  - Niki Yoshiuchi <aplusbi@gmail.com>
//  - Moritz Wilhelmy <moritz+suckless@wzff.de>
void movestack(const Arg *arg) {
	Client *c = NULL, *p = NULL, *pc = NULL, *i;
    if(selmon->sel == NULL) return;

	if(arg->i > 0) {
		/* find the client after selmon->sel */
		for(c = selmon->sel->next; c && (!ISVISIBLE(c) || c->isfloating); c = c->next);
		if(!c)
			for(c = selmon->clients; c && (!ISVISIBLE(c) || c->isfloating); c = c->next);
	}
	else {
		/* find the client before selmon->sel */
		for(i = selmon->clients; i != selmon->sel; i = i->next)
			if(ISVISIBLE(i) && !i->isfloating)
				c = i;
		if(!c)
			for(; i; i = i->next)
				if(ISVISIBLE(i) && !i->isfloating)
					c = i;
	}
	/* find the client before selmon->sel and c */
	for(i = selmon->clients; i && (!p || !pc); i = i->next) {
		if(i->next == selmon->sel)
			p = i;
		if(i->next == c)
			pc = i;
	}

	/* swap c and selmon->sel selmon->clients in the selmon->clients list */
	if(c && c != selmon->sel) {
		Client *temp = selmon->sel->next==c?selmon->sel:selmon->sel->next;
		selmon->sel->next = c->next==selmon->sel?c:c->next;
		c->next = temp;

		if(p && p != c)
			p->next = c;
		if(pc && pc != selmon->sel)
			pc->next = selmon->sel;

		if(selmon->sel == selmon->clients)
			selmon->clients = c;
		else if(c == selmon->clients)
			selmon->clients = selmon->sel;

		arrange(selmon);
	}
}

void first_client() {
    Client *c = NULL;
    for(c = selmon->clients; c; c = c->next) {
        if(ISVISIBLE(c) && !c->isfloating) {
            break;
        }
    }
    if(c != NULL) {
        focus(c);
    }
    arrange(selmon);
}

void last_client() {
    Client *c = NULL;
    Client *i;
    for(i = selmon->sel; i; i = i->next) {
        if(ISVISIBLE(i) && !i->isfloating) {
            c = i;
        }
    }
    focus(c);
    arrange(selmon);
}