From 236c76df0e64eaaaac4b108bb21b8140212f0c84 Mon Sep 17 00:00:00 2001
From: Charlotte Meyer <dev@buffet.sh>
Date: Wed, 1 Jan 2020 18:13:24 +0000
Subject: [PATCH] Add view event to kiwmi_server

---
 include/desktop/desktop.h |  4 ++++
 kiwmi/desktop/desktop.c   |  2 ++
 kiwmi/desktop/xdg_shell.c |  3 ++-
 kiwmi/luak.c              | 50 ++++++++++++++++++++++++++++++++++++++-
 4 files changed, 57 insertions(+), 2 deletions(-)

diff --git a/include/desktop/desktop.h b/include/desktop/desktop.h
index f798b17..2817c0c 100644
--- a/include/desktop/desktop.h
+++ b/include/desktop/desktop.h
@@ -22,6 +22,10 @@ struct kiwmi_desktop {
 
     struct wl_listener xdg_shell_new_surface;
     struct wl_listener new_output;
+
+    struct {
+        struct wl_signal view_map;
+    } events;
 };
 
 bool desktop_init(struct kiwmi_desktop *desktop, struct wlr_renderer *renderer);
diff --git a/kiwmi/desktop/desktop.c b/kiwmi/desktop/desktop.c
index 92fd5dd..23a7a9e 100644
--- a/kiwmi/desktop/desktop.c
+++ b/kiwmi/desktop/desktop.c
@@ -49,5 +49,7 @@ desktop_init(struct kiwmi_desktop *desktop, struct wlr_renderer *renderer)
     desktop->new_output.notify = new_output_notify;
     wl_signal_add(&server->backend->events.new_output, &desktop->new_output);
 
+    wl_signal_init(&desktop->events.view_map);
+
     return true;
 }
diff --git a/kiwmi/desktop/xdg_shell.c b/kiwmi/desktop/xdg_shell.c
index 2aa028b..f598401 100644
--- a/kiwmi/desktop/xdg_shell.c
+++ b/kiwmi/desktop/xdg_shell.c
@@ -19,7 +19,8 @@ xdg_surface_map_notify(struct wl_listener *listener, void *UNUSED(data))
 {
     struct kiwmi_view *view = wl_container_of(listener, view, map);
     view->mapped            = true;
-    view_focus(view);
+
+    wl_signal_emit(&view->desktop->events.view_map, view);
 }
 
 static void
diff --git a/kiwmi/luak.c b/kiwmi/luak.c
index 7782429..2c5aed5 100644
--- a/kiwmi/luak.c
+++ b/kiwmi/luak.c
@@ -244,6 +244,27 @@ on_cursor_button_notify(struct wl_listener *listener, void *data)
     }
 }
 
+static void
+on_view_notify(struct wl_listener *listener, void *data)
+{
+    struct lua_callback *lc     = wl_container_of(listener, lc, listener);
+    struct kiwmi_server *server = lc->server;
+    struct lua_State *L         = server->lua->L;
+    struct kiwmi_view *view     = data;
+
+    lua_rawgeti(L, LUA_REGISTRYINDEX, lc->callback_ref);
+
+    lua_pushcfunction(L, kiwmi_view_create);
+    lua_pushlightuserdata(L, view);
+    if (lua_pcall(L, 1, 1, 0)) {
+        wlr_log(WLR_ERROR, "%s", lua_tostring(L, -1));
+    }
+
+    if (lua_pcall(L, 1, 0, 0)) {
+        wlr_log(WLR_ERROR, "%s", lua_tostring(L, -1));
+    }
+}
+
 static int
 on_cursor_button(lua_State *L)
 {
@@ -273,7 +294,33 @@ on_cursor_button(lua_State *L)
 }
 
 static int
-l_quit(lua_State *L)
+on_view(lua_State *L)
+{
+    struct kiwmi_server *server =
+        *(struct kiwmi_server **)luaL_checkudata(L, 1, "kiwmi_server");
+    luaL_checktype(L, 2, LUA_TFUNCTION);   // callback
+
+    struct lua_callback *lc = malloc(sizeof(*lc));
+    if (!lc) {
+        return luaL_error(L, "failed to allocate lua_callback");
+    }
+
+    wl_list_insert(&server->lua->callbacks, &lc->link);
+
+    lc->server       = server;
+    lc->callback_ref = luaL_ref(L, LUA_REGISTRYINDEX);
+
+    lc->listener.notify = on_view_notify;
+    wl_signal_add(&server->desktop.events.view_map, &lc->listener);
+
+    lua_pushlightuserdata(L, lc);
+    lua_callback_create(L);
+
+    return 1;
+}
+
+static int
+l_kiwmi_server_quit(lua_State *L)
 {
     struct kiwmi_server *server = *(struct kiwmi_server**)luaL_checkudata(L, 1, "kiwmi_server");
 
@@ -351,6 +398,7 @@ kiwmi_server_register(lua_State *L)
 
 static const luaL_Reg kiwmi_events[] = {
     {"cursor_button", on_cursor_button},
+    {"view", on_view},
     {NULL, NULL},
 };