Asset System: "Mark Asset" & "Clear Asset" operators and UI integration

This makes it possible to turn data-blocks into assets and back into normal
data-blocks. A core design decision made for the asset system is that not every
data-block should be an asset, because not every data-block is made for reuse.
Users have to explicitly mark data-blocks as assets.

Exposes "Mark Asset" and "Clear Asset" in Outliner context menus (currently ID
Data submenu) and button context menus. We are still not too happy with the
names, they may change.

This uses the new context members to pass data-blocks to operators, added in
af008f553293 and 0c1d4769235c.

Part of the first Asset Browser milestone. Check the #asset_browser_milestone_1
project milestone on developer.blender.org.

Differential Revision: https://developer.blender.org/D9717

Reviewed by: Brecht Van Lommel

1 files changed, 39 insertions, 0 deletions

diff --git a/source/blender/editors/include/ED_asset.h b/source/blender/editors/include/ED_asset.h
new file mode 100644
index 00000000000..6fe50528cc5
--- /dev/null
+++ b/source/blender/editors/include/ED_asset.h
@@ -0,0 +1,39 @@
+/*
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+ */
+
+/** \file
+ * \ingroup editors
+ */
+
+#ifndef __ED_ASSET_H__
+#define __ED_ASSET_H__
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+bool ED_asset_mark_id(const struct bContext *C, struct ID *id);
+bool ED_asset_clear_id(struct ID *id);
+
+bool ED_asset_can_make_single_from_context(const struct bContext *C);
+
+void ED_operatortypes_asset(void);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* __ED_ASSET_H__ */