From 9e420a288e1324e0877d6fcde153618d19d04bb1 Mon Sep 17 00:00:00 2001
From: Chris Michael <cp.michael@samsung.com>
Date: Tue, 9 Apr 2013 13:56:24 +0100
Subject: [PATCH] Add start of desktop shell code.

Signed-off-by: Chris Michael <cp.michael@samsung.com>
---
 src/modules/wl_desktop_shell/e_mod_main.c | 120 ++++++++++++++++++++++
 1 file changed, 120 insertions(+)

diff --git a/src/modules/wl_desktop_shell/e_mod_main.c b/src/modules/wl_desktop_shell/e_mod_main.c
index 41005316a..1834f45c1 100644
--- a/src/modules/wl_desktop_shell/e_mod_main.c
+++ b/src/modules/wl_desktop_shell/e_mod_main.c
@@ -3,12 +3,45 @@
 #include "e_mod_main.h"
 #include "e_desktop_shell_protocol.h"
 
+/* shell function prototypes */
+static void _e_wl_shell_cb_destroy(struct wl_listener *listener, void *data EINA_UNUSED);
+static void _e_wl_shell_cb_bind(struct wl_client *client, void *data, unsigned int version EINA_UNUSED, unsigned int id);
+
+/* shell interface prototypes */
+static void _e_wl_shell_cb_shell_surface_get(struct wl_client *client, struct wl_resource *resource, unsigned int id, struct wl_resource *surface_resource);
+
+/* desktop shell function prototypes */
+static void _e_wl_shell_cb_bind_desktop(struct wl_client *client, void *data, unsigned int version EINA_UNUSED, unsigned int id);
+static void _e_wl_shell_cb_unbind_desktop(struct wl_resource *resource);
+
+/* desktop shell interface prototypes */
+
+/* local wayland interfaces */
+static const struct wl_shell_interface _e_shell_interface = 
+{
+   _e_wl_shell_cb_shell_surface_get
+};
+
+static const struct e_desktop_shell_interface _e_desktop_shell_interface = 
+{
+   NULL, // desktop_background_set
+   NULL, // desktop_panel_set
+   NULL, // desktop_lock_surface_set
+   NULL, // desktop_unlock
+   NULL // _e_wl_shell_cb_shell_grab_surface_set
+};
+
+/* local variables */
+
+/* external variables */
+
 EAPI E_Module_Api e_modapi = { E_MODULE_API_VERSION, "Wl_Desktop_Shell" };
 
 EAPI void *
 e_modapi_init(E_Module *m)
 {
    E_Wayland_Desktop_Shell *shell = NULL;
+   struct wl_global *gshell = NULL;
 
    /* try to allocate space for the shell structure */
    if (!(shell = E_NEW(E_Wayland_Desktop_Shell, 1)))
@@ -17,9 +50,30 @@ e_modapi_init(E_Module *m)
    /* tell the shell what compositor to use */
    shell->compositor = _e_wl_comp;
 
+   /* setup shell destroy callback */
+   shell->wl.destroy_listener.notify = _e_wl_shell_cb_destroy;
+   wl_signal_add(&_e_wl_comp->signals.destroy, &shell->wl.destroy_listener);
+
    /* setup compositor shell interface functions */
    _e_wl_comp->shell_interface.shell = shell;
 
+   /* try to add this shell to the display's global list */
+   if (!(gshell = 
+         wl_display_add_global(_e_wl_comp->wl.display, &wl_shell_interface, 
+                               shell, _e_wl_shell_cb_bind)))
+     goto err;
+
+   /* try to add the desktop shell interface to the display's global list */
+   if (!wl_display_add_global(_e_wl_comp->wl.display, 
+                              &e_desktop_shell_interface, shell, 
+                              _e_wl_shell_cb_bind_desktop))
+     {
+        /* remove previously added shell global */
+        wl_display_remove_global(_e_wl_comp->wl.display, gshell);
+
+        goto err;
+     }
+
    return m;
 
 err:
@@ -39,3 +93,69 @@ e_modapi_shutdown(E_Module *m EINA_UNUSED)
     * the compositor and we can cleanup there */
    return 1;
 }
+
+/* shell functions */
+static void 
+_e_wl_shell_cb_destroy(struct wl_listener *listener, void *data EINA_UNUSED)
+{
+   E_Wayland_Desktop_Shell *shell = NULL;
+
+   /* try to get the shell from the listener */
+   shell = 
+     container_of(listener, E_Wayland_Desktop_Shell, wl.destroy_listener);
+
+   /* free the allocated shell structure */
+   E_FREE(shell);
+}
+
+static void 
+_e_wl_shell_cb_bind(struct wl_client *client, void *data, unsigned int version EINA_UNUSED, unsigned int id)
+{
+   E_Wayland_Desktop_Shell *shell = NULL;
+
+   /* try to cast data to our shell */
+   if (!(shell = data)) return;
+
+   /* try to add the shell to the client */
+   wl_client_add_object(client, &wl_shell_interface, 
+                        &_e_shell_interface, id, shell);
+}
+
+/* shell interface functions */
+static void 
+_e_wl_shell_cb_shell_surface_get(struct wl_client *client, struct wl_resource *resource, unsigned int id, struct wl_resource *surface_resource)
+{
+
+}
+
+/* desktop shell functions */
+static void 
+_e_wl_shell_cb_bind_desktop(struct wl_client *client, void *data, unsigned int version EINA_UNUSED, unsigned int id)
+{
+   E_Wayland_Desktop_Shell *shell = NULL;
+   struct wl_resource *res = NULL;
+
+   /* try to cast data to our shell */
+   if (!(shell = data)) return;
+
+   /* try to add the desktop shell to the client */
+   if (!(res = wl_client_add_object(client, &e_desktop_shell_interface, 
+                                    &_e_desktop_shell_interface, id, shell)))
+     {
+        wl_resource_post_error(res, WL_DISPLAY_ERROR_INVALID_OBJECT, 
+                               "Permission Denied");
+        wl_resource_destroy(res);
+        return;
+     }
+
+   shell->wl.resource = res;
+
+   /* set desktop shell destroy callback */
+   res->destroy = _e_wl_shell_cb_unbind_desktop;
+}
+
+static void 
+_e_wl_shell_cb_unbind_desktop(struct wl_resource *resource)
+{
+   free(resource);
+}