[PATCH weston 12/16] ivi-shell: rework remove_surface notification

Ucan, Emre (ADITG/SW1) eucan at de.adit-jv.com
Thu Mar 31 11:10:02 UTC 2016


The add_notification_remove_surface API accepts a simple
wl_listener instead of a ivi-shell specific notification
function. Therefore, the API is renamed to add_listener_remove_surface.

This change has several advantages:
1. Code cleanup
2. No dynamic memory allocation. Listeners are allocated
   by controller plugins
3. Remove API is not needed. Controller plugins can easily
   remove the listener link.

Signed-off-by: Emre Ucan <eucan at de.adit-jv.com>
---
 ivi-shell/hmi-controller.c       |   14 ++++++++-----
 ivi-shell/ivi-layout-export.h    |    4 +---
 ivi-shell/ivi-layout.c           |   40 ++++++--------------------------------
 tests/ivi_layout-internal-test.c |    2 +-
 tests/ivi_layout-test-plugin.c   |   19 ++++++++++--------
 5 files changed, 28 insertions(+), 51 deletions(-)

diff --git a/ivi-shell/hmi-controller.c b/ivi-shell/hmi-controller.c
index bd38717..49aba81 100644
--- a/ivi-shell/hmi-controller.c
+++ b/ivi-shell/hmi-controller.c
@@ -128,6 +128,7 @@ struct hmi_controller {
 	struct wl_listener                  destroy_listener;
 
 	struct wl_listener                  surface_created;
+	struct wl_listener                  surface_removed;
 
 	struct wl_client                   *user_interface;
 	struct ui_setting                   ui_setting;
@@ -600,10 +601,12 @@ set_notification_create_surface(struct wl_listener *listener, void *data)
 }
 
 static void
-set_notification_remove_surface(struct ivi_layout_surface *ivisurf,
-				void *userdata)
+set_notification_remove_surface(struct wl_listener *listener, void *data)
 {
-	struct hmi_controller *hmi_ctrl = userdata;
+	struct hmi_controller *hmi_ctrl =
+			wl_container_of(listener, hmi_ctrl,
+					surface_removed);
+	(void)data;
 
 	switch_mode(hmi_ctrl, hmi_ctrl->layout_mode);
 }
@@ -840,8 +843,9 @@ hmi_controller_create(struct weston_compositor *ec)
 
 	hmi_ctrl->surface_created.notify = set_notification_create_surface;
 	ivi_layout_interface->add_listener_create_surface(&hmi_ctrl->surface_created);
-	ivi_layout_interface->add_notification_remove_surface(
-		set_notification_remove_surface, hmi_ctrl);
+
+	hmi_ctrl->surface_removed.notify = set_notification_remove_surface;
+	ivi_layout_interface->add_listener_remove_surface(&hmi_ctrl->surface_removed);
 	ivi_layout_interface->add_notification_configure_surface(
 		set_notification_configure_surface, hmi_ctrl);
 
diff --git a/ivi-shell/ivi-layout-export.h b/ivi-shell/ivi-layout-export.h
index 391df55..0aaf5b3 100644
--- a/ivi-shell/ivi-layout-export.h
+++ b/ivi-shell/ivi-layout-export.h
@@ -174,9 +174,7 @@ struct ivi_layout_interface {
 	/**
 	 * \brief register/unregister for notification when ivi_surface is removed
 	 */
-	int32_t (*add_notification_remove_surface)(
-				surface_remove_notification_func callback,
-				void *userdata);
+	int32_t (*add_listener_remove_surface)(struct wl_listener *listener);
 
 	void (*remove_notification_remove_surface)(
 				surface_remove_notification_func callback,
diff --git a/ivi-shell/ivi-layout.c b/ivi-shell/ivi-layout.c
index e7d6583..63983c5 100644
--- a/ivi-shell/ivi-layout.c
+++ b/ivi-shell/ivi-layout.c
@@ -931,23 +931,6 @@ clear_surface_order_list(struct ivi_layout_layer *ivilayer)
 }
 
 static void
-surface_removed(struct wl_listener *listener, void *data)
-{
-	struct ivi_layout_surface *ivisurface = data;
-
-	struct listener_layout_notification *notification =
-		container_of(listener,
-			     struct listener_layout_notification,
-			     listener);
-
-	struct ivi_layout_notification_callback *removed_callback =
-		notification->userdata;
-
-	((surface_remove_notification_func)removed_callback->callback)
-		(ivisurface, removed_callback->data);
-}
-
-static void
 surface_configure_changed(struct wl_listener *listener,
 			  void *data)
 {
@@ -1064,29 +1047,18 @@ ivi_layout_add_listener_create_surface(struct wl_listener *listener)
 }
 
 static int32_t
-ivi_layout_add_notification_remove_surface(surface_remove_notification_func callback,
-					   void *userdata)
+ivi_layout_add_listener_remove_surface(struct wl_listener *listener)
 {
 	struct ivi_layout *layout = get_instance();
-	struct ivi_layout_notification_callback *removed_callback = NULL;
-
-	if (callback == NULL) {
-		weston_log("ivi_layout_add_notification_remove_surface: invalid argument\n");
-		return IVI_FAILED;
-	}
 
-	removed_callback = malloc(sizeof *removed_callback);
-	if (removed_callback == NULL) {
-		weston_log("fails to allocate memory\n");
+	if (listener == NULL) {
+		weston_log("ivi_layout_add_listener_remove_surface: invalid argument\n");
 		return IVI_FAILED;
 	}
 
-	removed_callback->callback = callback;
-	removed_callback->data = userdata;
+	wl_signal_add(&layout->surface_notification.removed, listener);
 
-	return add_notification(&layout->surface_notification.removed,
-				surface_removed,
-				removed_callback);
+	return IVI_SUCCEEDED;
 }
 
 static void
@@ -2123,7 +2095,7 @@ static struct ivi_layout_interface ivi_layout_interface = {
 	 * surface controller interfaces
 	 */
 	.add_listener_create_surface	= ivi_layout_add_listener_create_surface,
-	.add_notification_remove_surface	= ivi_layout_add_notification_remove_surface,
+	.add_listener_remove_surface	= ivi_layout_add_listener_remove_surface,
 	.remove_notification_remove_surface	= ivi_layout_remove_notification_remove_surface,
 	.add_notification_configure_surface	= ivi_layout_add_notification_configure_surface,
 	.remove_notification_configure_surface	= ivi_layout_remove_notification_configure_surface,
diff --git a/tests/ivi_layout-internal-test.c b/tests/ivi_layout-internal-test.c
index 49a682a..72c045f 100644
--- a/tests/ivi_layout-internal-test.c
+++ b/tests/ivi_layout-internal-test.c
@@ -873,7 +873,7 @@ test_surface_bad_remove_notification(struct test_context *ctx)
 {
 	const struct ivi_layout_interface *lyt = ctx->layout_interface;
 
-	iassert(lyt->add_notification_remove_surface(NULL, NULL) == IVI_FAILED);
+	iassert(lyt->add_listener_remove_surface(NULL) == IVI_FAILED);
 }
 
 /************************ tests end ********************************/
diff --git a/tests/ivi_layout-test-plugin.c b/tests/ivi_layout-test-plugin.c
index 32de740..f01a2d5 100644
--- a/tests/ivi_layout-test-plugin.c
+++ b/tests/ivi_layout-test-plugin.c
@@ -86,6 +86,7 @@ struct test_context {
 
 	struct wl_listener surface_property_changed;
 	struct wl_listener surface_created;
+	struct wl_listener surface_removed;
 };
 
 static struct test_context static_context;
@@ -952,11 +953,13 @@ RUNNER_TEST(surface_create_notification_p3)
 }
 
 static void
-test_surface_remove_notification_callback(struct ivi_layout_surface *ivisurf,
-					  void *userdata)
+test_surface_remove_notification_callback(struct wl_listener *listener, void *data)
 {
-	struct test_context *ctx = userdata;
+	struct test_context *ctx =
+			container_of(listener, struct test_context,
+					surface_removed);
 	const struct ivi_layout_interface *lyt = ctx->layout_interface;
+	struct ivi_layout_surface *ivisurf = (struct ivi_layout_surface*) data;
 
 	runner_assert_or_return(lyt->get_id_of_surface(ivisurf) == IVI_TEST_SURFACE_ID(0));
 
@@ -967,19 +970,19 @@ RUNNER_TEST(surface_remove_notification_p1)
 {
 	const struct ivi_layout_interface *lyt = ctx->layout_interface;
 
-	runner_assert(lyt->add_notification_remove_surface(
-		      test_surface_remove_notification_callback, ctx) == IVI_SUCCEEDED);
+	ctx->surface_removed.notify = test_surface_remove_notification_callback;
+	runner_assert(lyt->add_listener_remove_surface(&ctx->surface_removed)
+			== IVI_SUCCEEDED);
 
 	ctx->user_flags = 0;
 }
 
 RUNNER_TEST(surface_remove_notification_p2)
 {
-	const struct ivi_layout_interface *lyt = ctx->layout_interface;
-
 	runner_assert(ctx->user_flags == 1);
 
-	lyt->remove_notification_remove_surface(test_surface_remove_notification_callback, ctx);
+	// remove surface removed listener.
+	wl_list_remove(&ctx->surface_removed.link);
 	ctx->user_flags = 0;
 }
 
-- 
1.7.9.5



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