498 lines
13 KiB
C
498 lines
13 KiB
C
/*
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* tag.c - tag management
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*
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* Copyright © 2007-2008 Julien Danjou <julien@danjou.info>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with this program; if not, write to the Free Software Foundation, Inc.,
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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*/
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#include "screen.h"
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#include "tag.h"
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#include "client.h"
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#include "ewmh.h"
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#include "widget.h"
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#include "luaa.h"
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/** Tag type */
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struct tag
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{
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LUA_OBJECT_HEADER
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/** Tag name */
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char *name;
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/** Screen */
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screen_t *screen;
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/** true if selected */
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bool selected;
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/** clients in this tag */
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client_array_t clients;
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};
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static lua_class_t tag_class;
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LUA_OBJECT_FUNCS(tag_class, tag_t, tag)
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void
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tag_unref_simplified(tag_t **tag)
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{
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luaA_object_unref(globalconf.L, *tag);
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}
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/** Garbage collect a tag.
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* \param L The Lua VM state.
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* \return 0.
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*/
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static int
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luaA_tag_gc(lua_State *L)
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{
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tag_t *tag = luaA_checkudata(L, 1, &tag_class);
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client_array_wipe(&tag->clients);
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p_delete(&tag->name);
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return luaA_object_gc(L);
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}
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OBJECT_EXPORT_PROPERTY(tag, tag_t, selected)
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OBJECT_EXPORT_PROPERTY(tag, tag_t, name)
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/** View or unview a tag.
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* \param L The Lua VM state.
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* \param udx The index of the tag on the stack.
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* \param view Set visible or not.
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*/
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static void
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tag_view(lua_State *L, int udx, bool view)
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{
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tag_t *tag = luaA_checkudata(L, udx, &tag_class);
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if(tag->selected != view)
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{
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tag->selected = view;
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luaA_object_emit_signal(L, udx, "property::selected", 0);
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if(tag->screen)
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{
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int screen_index = screen_array_indexof(&globalconf.screens, tag->screen);
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banning_refresh(tag->screen);
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ewmh_update_net_current_desktop(screen_virttophys(screen_index));
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if(globalconf.hooks.tags != LUA_REFNIL)
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{
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lua_pushnumber(globalconf.L, screen_index + 1);
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luaA_object_push(globalconf.L, tag);
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if(view)
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lua_pushliteral(globalconf.L, "select");
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else
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lua_pushliteral(globalconf.L, "unselect");
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luaA_dofunction_from_registry(globalconf.L, globalconf.hooks.tags, 3, 0);
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}
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}
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}
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}
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/** Append a tag to a screen.
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* \param L The Lua VM state.
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* \param udx The tag index on the stack.
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* \param s The screen.
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*/
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void
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tag_append_to_screen(lua_State *L, int udx, screen_t *s)
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{
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tag_t *tag = luaA_checkudata(globalconf.L, udx, &tag_class);
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/* can't attach a tag twice */
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if(tag->screen)
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{
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lua_remove(L, udx);
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return;
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}
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int screen_index = screen_array_indexof(&globalconf.screens, s);
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int phys_screen = screen_virttophys(screen_index);
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tag->screen = s;
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tag_array_append(&s->tags, luaA_object_ref_class(globalconf.L, udx, &tag_class));
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ewmh_update_net_numbers_of_desktop(phys_screen);
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ewmh_update_net_desktop_names(phys_screen);
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ewmh_update_workarea(phys_screen);
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luaA_object_push(globalconf.L, tag);
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luaA_object_emit_signal(L, -1, "property::screen", 0);
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lua_pop(L, 1);
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/* call hook */
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if(globalconf.hooks.tags != LUA_REFNIL)
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{
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lua_pushnumber(globalconf.L, screen_index + 1);
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luaA_object_push(globalconf.L, tag);
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lua_pushliteral(globalconf.L, "add");
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luaA_dofunction_from_registry(globalconf.L, globalconf.hooks.tags, 3, 0);
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}
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luaA_object_push(globalconf.L, tag);
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screen_emit_signal(globalconf.L, s, "tag::attach", 1);
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}
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/** Remove a tag from screen. Tag must be on a screen and have no clients.
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* \param tag The tag to remove.
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*/
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void
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tag_remove_from_screen(tag_t *tag)
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{
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if(!tag->screen)
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return;
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int screen_index = screen_array_indexof(&globalconf.screens, tag->screen);
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int phys_screen = screen_virttophys(screen_index);
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tag_array_t *tags = &tag->screen->tags;
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for(int i = 0; i < tags->len; i++)
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if(tags->tab[i] == tag)
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{
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tag_array_take(tags, i);
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break;
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}
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/* tag was selected? If so, reban */
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if(tag->selected)
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banning_refresh(tag->screen);
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ewmh_update_net_numbers_of_desktop(phys_screen);
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ewmh_update_net_desktop_names(phys_screen);
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ewmh_update_workarea(phys_screen);
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/* call hook */
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if(globalconf.hooks.tags != LUA_REFNIL)
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{
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lua_pushnumber(globalconf.L, screen_index + 1);
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luaA_object_push(globalconf.L, tag);
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lua_pushliteral(globalconf.L, "remove");
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luaA_dofunction_from_registry(globalconf.L, globalconf.hooks.tags, 3, 0);
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}
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screen_t *s = tag->screen;
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tag->screen = NULL;
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luaA_object_push(globalconf.L, tag);
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luaA_object_emit_signal(globalconf.L, -1, "property::screen", 0);
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screen_emit_signal(globalconf.L, s, "tag::detach", 1);
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luaA_object_unref(globalconf.L, tag);
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}
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static void
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tag_client_emit_signal(lua_State *L, tag_t *t, client_t *c, const char *signame)
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{
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luaA_object_push(L, c);
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luaA_object_push(L, t);
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/* emit signal on client, with new tag as argument */
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luaA_object_emit_signal(L, -2, signame, 1);
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/* re push tag */
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luaA_object_push(L, t);
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/* move tag before client */
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lua_insert(L, -2);
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luaA_object_emit_signal(L, -2, signame, 1);
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/* Remove tag */
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lua_pop(L, 1);
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}
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/** Tag a client with the tag on top of the stack.
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* \param c the client to tag
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*/
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void
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tag_client(client_t *c)
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{
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tag_t *t = luaA_object_ref_class(globalconf.L, -1, &tag_class);
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/* don't tag twice */
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if(is_client_tagged(c, t))
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{
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luaA_object_unref(globalconf.L, t);
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return;
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}
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client_array_append(&t->clients, c);
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ewmh_client_update_desktop(c);
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client_need_reban(c);
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/* call hook */
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if(globalconf.hooks.tagged != LUA_REFNIL)
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{
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luaA_object_push(globalconf.L, c);
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luaA_object_push(globalconf.L, t);
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luaA_dofunction_from_registry(globalconf.L, globalconf.hooks.tagged, 2, 0);
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}
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tag_client_emit_signal(globalconf.L, t, c, "tagged");
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}
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/** Untag a client with specified tag.
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* \param c the client to tag
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* \param t the tag to tag the client with
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*/
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void
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untag_client(client_t *c, tag_t *t)
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{
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for(int i = 0; i < t->clients.len; i++)
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if(t->clients.tab[i] == c)
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{
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client_need_reban(c);
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client_array_take(&t->clients, i);
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client_need_reban(c);
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ewmh_client_update_desktop(c);
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/* call hook */
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if(globalconf.hooks.tagged != LUA_REFNIL)
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{
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luaA_object_push(globalconf.L, c);
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luaA_object_push(globalconf.L, t);
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luaA_dofunction_from_registry(globalconf.L, globalconf.hooks.tagged, 2, 0);
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}
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tag_client_emit_signal(globalconf.L, t, c, "untagged");
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luaA_object_unref(globalconf.L, t);
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return;
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}
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}
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/** Check if a client is tagged with the specified tag.
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* \param c the client
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* \param t the tag
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* \return true if the client is tagged with the tag, false otherwise.
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*/
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bool
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is_client_tagged(client_t *c, tag_t *t)
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{
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for(int i = 0; i < t->clients.len; i++)
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if(t->clients.tab[i] == c)
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return true;
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return false;
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}
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/** Get the index of the first selected tag.
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* \param screen Screen.
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* \return Its index.
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*/
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int
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tags_get_first_selected_index(screen_t *screen)
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{
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foreach(tag, screen->tags)
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if((*tag)->selected)
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return tag_array_indexof(&screen->tags, tag);
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return 0;
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}
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/** Set a tag to be the only one viewed.
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* \param target the tag to see
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*/
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static void
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tag_view_only(tag_t *target)
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{
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if(target)
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foreach(tag, target->screen->tags)
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{
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luaA_object_push(globalconf.L, *tag);
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tag_view(globalconf.L, -1, *tag == target);
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lua_pop(globalconf.L, 1);
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}
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}
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/** View only a tag, selected by its index.
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* \param screen Screen.
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* \param dindex The index.
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*/
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void
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tag_view_only_byindex(screen_t *screen, int dindex)
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{
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tag_array_t *tags = &screen->tags;
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if(dindex < 0 || dindex >= tags->len)
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return;
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tag_view_only(tags->tab[dindex]);
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}
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/** Create a new tag.
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* \param L The Lua VM state.
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* \luastack
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* \lparam A name.
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* \lreturn A new tag object.
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*/
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static int
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luaA_tag_new(lua_State *L)
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{
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if(lua_isstring(L, 2))
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{
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/* compat code */
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luaA_deprecate(L, "new syntax");
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size_t len;
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const char *name = luaL_checklstring(L, 2, &len);
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tag_t *tag = tag_new(globalconf.L);
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a_iso2utf8(name, len, &tag->name, NULL);
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return 1;
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}
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return luaA_class_new(L, &tag_class);
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}
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/** Get or set the clients attached to this tag.
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* \param L The Lua VM state.
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* \return The number of elements pushed on stack.
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* \luastack
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* \lparam None or a table of clients to set.
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* \lreturn A table with the clients attached to this tags.
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*/
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static int
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luaA_tag_clients(lua_State *L)
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{
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tag_t *tag = luaA_checkudata(L, 1, &tag_class);
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client_array_t *clients = &tag->clients;
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int i;
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if(lua_gettop(L) == 2)
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{
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luaA_checktable(L, 2);
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foreach(c, tag->clients)
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untag_client(*c, tag);
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lua_pushnil(L);
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while(lua_next(L, 2))
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{
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client_t *c = luaA_client_checkudata(L, -1);
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/* push tag on top of the stack */
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lua_pushvalue(L, 1);
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tag_client(c);
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lua_pop(L, 1);
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}
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}
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lua_createtable(L, clients->len, 0);
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for(i = 0; i < clients->len; i++)
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{
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luaA_object_push(L, clients->tab[i]);
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lua_rawseti(L, -2, i + 1);
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}
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return 1;
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}
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LUA_OBJECT_EXPORT_PROPERTY(tag, tag_t, name, lua_pushstring)
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LUA_OBJECT_EXPORT_PROPERTY(tag, tag_t, selected, lua_pushboolean)
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/** Set the tag name.
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* \param L The Lua VM state.
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* \param tag The tag to name.
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* \return The number of elements pushed on stack.
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*/
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static int
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luaA_tag_set_name(lua_State *L, tag_t *tag)
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{
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size_t len;
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const char *buf = luaL_checklstring(L, -1, &len);
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p_delete(&tag->name);
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a_iso2utf8(buf, len, &tag->name, NULL);
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luaA_object_emit_signal(L, -3, "property::name", 0);
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return 0;
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}
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/** Set the tag selection status.
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* \param L The Lua VM state.
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* \param tag The tag to set the selection status for.
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* \return The number of elements pushed on stack.
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*/
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static int
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luaA_tag_set_selected(lua_State *L, tag_t *tag)
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{
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tag_view(L, -3, luaA_checkboolean(L, -1));
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return 0;
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}
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/** Set the tag screen.
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* \param L The Lua VM state.
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* \param tag The tag to set the screen for.
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* \return The number of elements pushed on stack.
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*/
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static int
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luaA_tag_set_screen(lua_State *L, tag_t *tag)
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{
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int screen;
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if(lua_isnil(L, -1))
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screen = -1;
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else
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{
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screen = luaL_checknumber(L, -1) - 1;
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luaA_checkscreen(screen);
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}
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tag_remove_from_screen(tag);
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if(screen != -1)
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tag_append_to_screen(L, -3, &globalconf.screens.tab[screen]);
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return 0;
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}
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/** Get the tag screen.
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* \param L The Lua VM state.
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* \param tag The tag to get the screen for.
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* \return The number of elements pushed on stack.
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*/
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static int
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luaA_tag_get_screen(lua_State *L, tag_t *tag)
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{
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if(!tag->screen)
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return 0;
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lua_pushnumber(L, screen_array_indexof(&globalconf.screens, tag->screen) + 1);
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return 1;
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}
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void
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tag_class_setup(lua_State *L)
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{
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static const struct luaL_reg tag_methods[] =
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{
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LUA_CLASS_METHODS(tag)
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{ "__call", luaA_tag_new },
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{ NULL, NULL }
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};
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static const struct luaL_reg tag_meta[] =
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{
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LUA_OBJECT_META(tag)
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LUA_CLASS_META
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{ "clients", luaA_tag_clients },
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{ "__gc", luaA_tag_gc },
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{ NULL, NULL },
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};
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luaA_class_setup(L, &tag_class, "tag", (lua_class_allocator_t) tag_new,
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luaA_class_index_miss_property, luaA_class_newindex_miss_property,
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tag_methods, tag_meta);
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luaA_class_add_property(&tag_class, A_TK_NAME,
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(lua_class_propfunc_t) luaA_tag_set_name,
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(lua_class_propfunc_t) luaA_tag_get_name,
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(lua_class_propfunc_t) luaA_tag_set_name);
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luaA_class_add_property(&tag_class, A_TK_SCREEN,
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(lua_class_propfunc_t) NULL,
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(lua_class_propfunc_t) luaA_tag_get_screen,
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(lua_class_propfunc_t) luaA_tag_set_screen);
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luaA_class_add_property(&tag_class, A_TK_SELECTED,
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(lua_class_propfunc_t) luaA_tag_set_selected,
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(lua_class_propfunc_t) luaA_tag_get_selected,
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(lua_class_propfunc_t) luaA_tag_set_selected);
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}
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// vim: filetype=c:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:encoding=utf-8:textwidth=80
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