[client] Add support for hide/unhide

Signed-off-by: Julien Danjou <julien@danjou.info>

client.c

@@ -126,7 +126,7 @@ client_isvisible_anyscreen(client_t *c)
     workspace_t *ws;
     int screen;
 
-    if(c)
+    if(c && !c->ishidden)
     {
         ws = workspace_client_get(c);
         for(screen = 0; screen < globalconf.screens_info->nscreen; screen++)
@@ -146,7 +146,7 @@ client_isvisible_anyscreen(client_t *c)
 bool
 client_isvisible(client_t *c, int screen)
 {
-    if(c)
+    if(c && !c->ishidden)
         return (workspace_client_get(c) == globalconf.screens[screen].workspace);
     return false;
 }
@@ -850,7 +850,7 @@ luaA_client_visible_get(lua_State *L)
     lua_newtable(L);
 
     for(c = globalconf.clients; c; c = c->next)
-        if(!c->skip && client_isvisible(c, screen))
+        if(!c->skip && !c->ishidden && client_isvisible(c, screen))
         {
             luaA_client_userdata_new(c);
             lua_rawseti(L, -2, i++);
@@ -1169,6 +1169,28 @@ luaA_client_unmanage(lua_State *L)
     return 0;
 }
 
+/** Hide a client.
+ */
+static int
+luaA_client_hide(lua_State *L)
+{
+    client_t **c = luaA_checkudata(L, 1, "client");
+    (*c)->ishidden = true;
+    workspace_client_get(*c)->need_arrange = true;
+    return 0;
+}
+
+/** Unhide a client.
+ */
+static int
+luaA_client_unhide(lua_State *L)
+{
+    client_t **c = luaA_checkudata(L, 1, "client");
+    (*c)->ishidden = false;
+    workspace_client_get(*c)->need_arrange = true;
+    return 0;
+}
+
 int
 luaA_client_userdata_new(client_t *c)
 {
@@ -1209,6 +1231,8 @@ const struct luaL_reg awesome_client_meta[] =
     { "mouse_resize", luaA_client_mouse_resize },
     { "mouse_move", luaA_client_mouse_move },
     { "unmanage", luaA_client_unmanage },
+    { "hide", luaA_client_hide },
+    { "unhide", luaA_client_unhide },
     { "__eq", luaA_client_eq },
     { "__tostring", luaA_client_tostring },
     { NULL, NULL }

focus.c

@@ -67,7 +67,7 @@ focus_get_latest_client_for_workspace(workspace_t *ws, int nindex)
     int i = 0;
 
     for(node = globalconf.focus; node; node = node->next)
-        if(node->client && !node->client->skip)
+        if(node->client && !node->client->skip && !node->client->ishidden)
             if(workspace_client_get(node->client) == ws)
                 if(i-- == nindex)
                     return node->client;

layout.c

@@ -49,13 +49,13 @@ arrange(workspace_t *ws)
     workspace_t *cws;
 
     for(c = globalconf.clients; c; c = c->next)
-        if((cws = workspace_client_get(c)) == ws)
+        if((cws = workspace_client_get(c)) == ws && !c->ishidden)
         {
             screen_client_moveto(c, screen);
             client_unban(c);
         }
         /* we don't touch other screens windows */
-        else if(workspace_screen_get(cws) == -1)
+        else if(c->ishidden || workspace_screen_get(cws) == -1)
             client_ban(c);
 
     qp_c = xcb_query_pointer_unchecked(globalconf.connection,

structs.h

@@ -274,10 +274,10 @@ struct client_t
     bool skip;
     /** true if the client is moving */
     bool ismoving;
+    /** True if the client is hidden */
+    bool ishidden;
     /** true if the client must be skipped from task bar client list */
     bool skiptb;
-    /** Next and previous clients */
-    client_t *prev, *next;
     /** Window of the client */
     xcb_window_t win;
     /** Client physical screen */
@@ -288,6 +288,8 @@ struct client_t
     char *icon_path;
     /** Titlebar */
     titlebar_t *titlebar;
+    /** Next and previous clients */
+    client_t *prev, *next;
 };
 
 struct client_node_t