/*

 * (C)opyright MMVI Anselm R. Garbe <garbeam at gmail dot com>

 * See LICENSE file for license details.

 */

#include <stdlib.h>

#include <stdio.h>

#include <string.h>

#include <X11/Xatom.h>

#include <X11/Xutil.h>

#include "dwm.h"

static Rule rule[] = {

	/* class			instance	tags						dofloat */

	{ "Firefox-bin",	"Gecko",	{ [Twww] = "www" },			False },

};

void (*arrange)(Arg *) = dotile;

Client *

getnext(Client *c)

{

	for(; c && !c->tags[tsel]; c = c->next);

	return c;

}

void

settags(Client *c)

{

	XClassHint ch;

	static unsigned int len = rule ? sizeof(rule) / sizeof(rule[0]) : 0;

	unsigned int i, j;

	Bool matched = False;

	if(!len) {

		c->tags[tsel] = tags[tsel];

		return;

	}

	if(XGetClassHint(dpy, c->win, &ch)) {

		if(ch.res_class && ch.res_name) {

			for(i = 0; i < len; i++)

				if(!strncmp(rule[i].class, ch.res_class, sizeof(rule[i].class))

					&& !strncmp(rule[i].instance, ch.res_name, sizeof(rule[i].instance)))

				{

					for(j = 0; j < TLast; j++)

						c->tags[j] = rule[i].tags[j];

					c->dofloat = rule[i].dofloat;

					matched = True;

					break;

				}

		}

		if(ch.res_class)

			XFree(ch.res_class);

		if(ch.res_name)

			XFree(ch.res_name);

	}

	if(!matched)

		c->tags[tsel] = tags[tsel];

}

void

view(Arg *arg)

{

	tsel = arg->i;

	arrange(NULL);

	drawall();

}

void

dofloat(Arg *arg)

{

	Client *c;

	arrange = dofloat;

	for(c = clients; c; c = c->next) {

		if(c->tags[tsel])

			resize(c, True);

		else

			ban(c);

	}

	if(sel && !sel->tags[tsel]) {

		if((sel = getnext(clients))) {

			higher(sel);

			focus(sel);

		}

	}

	drawall();

}

void

dotile(Arg *arg)

{

	Client *c;

	int n, i, w, h;

	w = sw - mw;

	arrange = dotile;

	for(n = 0, c = clients; c; c = c->next)

		if(c->tags[tsel] && !c->dofloat)

			n++;

	if(n > 1)

		h = (sh - bh) / (n - 1);

	else

		h = sh - bh;

	for(i = 0, c = clients; c; c = c->next) {

		if(c->tags[tsel]) {

			if(c->dofloat) {

				higher(c);

				resize(c, True);

				continue;

			}

			if(n == 1) {

				c->x = sx;

				c->y = sy + bh;

				c->w = sw - 2 * c->border;

				c->h = sh - 2 * c->border - bh;

			}

			else if(i == 0) {

				c->x = sx;

				c->y = sy + bh;

				c->w = mw - 2 * c->border;

				c->h = sh - 2 * c->border - bh;

			}

			else {

				c->x = sx + mw;

				c->y = sy + (i - 1) * h + bh;

				c->w = w - 2 * c->border;

				c->h = h - 2 * c->border;

			}

			resize(c, False);

			i++;

		}

		else

			ban(c);

	}

	if(!sel || (sel && !sel->tags[tsel])) {

		if((sel = getnext(clients))) {

			higher(sel);

			focus(sel);

		}

	}

	drawall();

}

void

appendtag(Arg *arg)

{

	if(!sel)

		return;

	sel->tags[arg->i] = tags[arg->i];

	arrange(NULL);

}

void

replacetag(Arg *arg)

{

	int i;

	if(!sel)

		return;

	for(i = 0; i < TLast; i++)

		sel->tags[i] = NULL;

	appendtag(arg);

}