Add copy/paste of any IDs in Outliner.

This adds entries to copy/paste (selected) IDs in the Outliner, as well
as usual ctrl-C/ctrl-V shortcuts.

Note that the clipboard is shared with other IDs copying (currently, the
one for objects in 3DView).

Reviewers: brecht, dfelinto, billreynish, pablovazquez

Differential Revision: https://developer.blender.org/D4568

4 files changed, 122 insertions, 0 deletions

diff --git a/source/blender/editors/space_outliner/outliner_edit.c b/source/blender/editors/space_outliner/outliner_edit.c
index a96d5ad183f..0cadda235f4 100644
--- a/source/blender/editors/space_outliner/outliner_edit.c
+++ b/source/blender/editors/space_outliner/outliner_edit.c
@@ -40,6 +40,8 @@
 #include "BLT_translation.h"
 
 #include "BKE_animsys.h"
+#include "BKE_appdir.h"
+#include "BKE_blender_copybuffer.h"
 #include "BKE_collection.h"
 #include "BKE_context.h"
 #include "BKE_idcode.h"
@@ -592,6 +594,104 @@ void id_remap_cb(
 	WM_operator_properties_free(&op_props);
 }
 
+/* ID copy/Paste ------------------------------------------------------------- */
+
+static int outliner_id_copy_tag(SpaceOutliner *soops, ListBase *tree)
+{
+	TreeElement *te;
+	TreeStoreElem *tselem;
+	int num_ids = 0;
+
+	for (te = tree->first; te; te = te->next) {
+		tselem = TREESTORE(te);
+
+		/* if item is selected and is an ID, tag it as needing to be copied. */
+		if (tselem->flag & TSE_SELECTED && ELEM(tselem->type, 0, TSE_LAYER_COLLECTION)) {
+			ID *id = tselem->id;
+			if (!(id->tag & LIB_TAG_DOIT)) {
+				BKE_copybuffer_tag_ID(tselem->id);
+				num_ids++;
+			}
+		}
+
+		/* go over sub-tree */
+		if (TSELEM_OPEN(tselem, soops)) {
+			num_ids += outliner_id_copy_tag(soops, &te->subtree);
+		}
+	}
+
+	return num_ids;
+}
+
+static int outliner_id_copy_exec(bContext *C, wmOperator *op)
+{
+	Main *bmain = CTX_data_main(C);
+	SpaceOutliner *soops = CTX_wm_space_outliner(C);
+	char str[FILE_MAX];
+
+	BKE_copybuffer_begin(bmain);
+
+	const int num_ids = outliner_id_copy_tag(soops, &soops->tree);
+	if (num_ids == 0) {
+		BKE_report(op->reports, RPT_INFO, "No selected data-blocks to copy");
+		return OPERATOR_CANCELLED;
+	}
+
+	BLI_make_file_string("/", str, BKE_tempdir_base(), "copybuffer.blend");
+	BKE_copybuffer_save(bmain, str, op->reports);
+
+	BKE_reportf(op->reports, RPT_INFO, "Copied %d selected data-blocks", num_ids);
+
+	return OPERATOR_FINISHED;
+}
+
+void OUTLINER_OT_id_copy(wmOperatorType *ot)
+{
+	/* identifiers */
+	ot->name = "Outliner ID Data Copy";
+	ot->idname = "OUTLINER_OT_id_copy";
+	ot->description = "Selected data-blocks are copied to the clipboard";
+
+	/* callbacks */
+	ot->exec = outliner_id_copy_exec;
+	ot->poll = ED_operator_outliner_active;
+
+	ot->flag = 0;
+}
+
+static int outliner_id_paste_exec(bContext *C, wmOperator *op)
+{
+	char str[FILE_MAX];
+	const short flag = FILE_AUTOSELECT | FILE_ACTIVE_COLLECTION;
+
+	BLI_make_file_string("/", str, BKE_tempdir_base(), "copybuffer.blend");
+
+	const int num_pasted = BKE_copybuffer_paste(C, str, flag, op->reports, 0);
+	if (num_pasted == 0) {
+		BKE_report(op->reports, RPT_INFO, "No data to paste");
+		return OPERATOR_CANCELLED;
+	}
+
+	WM_event_add_notifier(C, NC_WINDOW, NULL);
+
+	BKE_reportf(op->reports, RPT_INFO, "%d data-blocks pasted", num_pasted);
+	return OPERATOR_FINISHED;
+}
+
+void OUTLINER_OT_id_paste(wmOperatorType *ot)
+{
+	/* identifiers */
+	ot->name = "Outliner ID Data Paste";
+	ot->idname = "OUTLINER_OT_id_paste";
+	ot->description = "Data-blocks from the clipboard are pasted";
+
+	/* callbacks */
+	ot->exec = outliner_id_paste_exec;
+	ot->poll = ED_operator_outliner_active;
+
+	ot->flag = 0;
+}
+
 /* Library relocate/reload --------------------------------------------------- */
 
 static int lib_relocate(
diff --git a/source/blender/editors/space_outliner/outliner_intern.h b/source/blender/editors/space_outliner/outliner_intern.h
index b93217395d6..57fed22d36b 100644
--- a/source/blender/editors/space_outliner/outliner_intern.h
+++ b/source/blender/editors/space_outliner/outliner_intern.h
@@ -297,6 +297,8 @@ void OUTLINER_OT_object_operation(struct wmOperatorType *ot);
 void OUTLINER_OT_lib_operation(struct wmOperatorType *ot);
 void OUTLINER_OT_id_operation(struct wmOperatorType *ot);
 void OUTLINER_OT_id_remap(struct wmOperatorType *ot);
+void OUTLINER_OT_id_copy(struct wmOperatorType *ot);
+void OUTLINER_OT_id_paste(struct wmOperatorType *ot);
 void OUTLINER_OT_data_operation(struct wmOperatorType *ot);
 void OUTLINER_OT_animdata_operation(struct wmOperatorType *ot);
 void OUTLINER_OT_action_set(struct wmOperatorType *ot);
diff --git a/source/blender/editors/space_outliner/outliner_ops.c b/source/blender/editors/space_outliner/outliner_ops.c
index 5d9437210e2..c14a5eace91 100644
--- a/source/blender/editors/space_outliner/outliner_ops.c
+++ b/source/blender/editors/space_outliner/outliner_ops.c
@@ -63,6 +63,8 @@ void outliner_operatortypes(void)
 	WM_operatortype_append(OUTLINER_OT_id_operation);
 	WM_operatortype_append(OUTLINER_OT_id_delete);
 	WM_operatortype_append(OUTLINER_OT_id_remap);
+	WM_operatortype_append(OUTLINER_OT_id_copy);
+	WM_operatortype_append(OUTLINER_OT_id_paste);
 	WM_operatortype_append(OUTLINER_OT_data_operation);
 	WM_operatortype_append(OUTLINER_OT_animdata_operation);
 	WM_operatortype_append(OUTLINER_OT_action_set);
diff --git a/source/blender/editors/space_outliner/outliner_tools.c b/source/blender/editors/space_outliner/outliner_tools.c
index 19d79965a6f..400a69cef51 100644
--- a/source/blender/editors/space_outliner/outliner_tools.c
+++ b/source/blender/editors/space_outliner/outliner_tools.c
@@ -1152,6 +1152,9 @@ typedef enum eOutlinerIdOpTypes {
 	OUTLINER_IDOP_DELETE,
 	OUTLINER_IDOP_REMAP,
 
+	OUTLINER_IDOP_COPY,
+	OUTLINER_IDOP_PASTE,
+
 	OUTLINER_IDOP_FAKE_ADD,
 	OUTLINER_IDOP_FAKE_CLEAR,
 	OUTLINER_IDOP_RENAME,
@@ -1169,6 +1172,10 @@ static const EnumPropertyItem prop_id_op_types[] = {
 	{OUTLINER_IDOP_DELETE, "DELETE", ICON_X, "Delete", ""},
 	{OUTLINER_IDOP_REMAP, "REMAP", 0, "Remap Users",
 	 "Make all users of selected data-blocks to use instead current (clicked) one"},
+	{0, "", 0, NULL, NULL},
+	{OUTLINER_IDOP_COPY, "COPY", ICON_COPYDOWN, "Copy", ""},
+	{OUTLINER_IDOP_PASTE, "PASTE", ICON_PASTEDOWN, "Paste", ""},
+	{0, "", 0, NULL, NULL},
 	{OUTLINER_IDOP_FAKE_ADD, "ADD_FAKE", 0, "Add Fake User",
 	 "Ensure data-block gets saved even if it isn't in use (e.g. for motion and material libraries)"},
 	{OUTLINER_IDOP_FAKE_CLEAR, "CLEAR_FAKE", 0, "Clear Fake User", ""},
@@ -1320,6 +1327,17 @@ static int outliner_id_operation_exec(bContext *C, wmOperator *op)
 			}
 			break;
 		}
+		case OUTLINER_IDOP_COPY:
+		{
+			WM_operator_name_call(C, "OUTLINER_OT_id_copy", WM_OP_INVOKE_DEFAULT, NULL);
+			break;
+		}
+		case OUTLINER_IDOP_PASTE:
+		{
+			WM_operator_name_call(C, "OUTLINER_OT_id_paste", WM_OP_INVOKE_DEFAULT, NULL);
+			ED_undo_push(C, "Paste");
+			break;
+		}
 		case OUTLINER_IDOP_FAKE_ADD:
 		{
 			/* set fake user */