Add remote history to EditorUndoRedoManager

doc/classes/EditorUndoRedoManager.xml

@@ -123,6 +123,9 @@
 		<constant name="GLOBAL_HISTORY" value="0" enum="SpecialHistory">
 			Global history not associated with any scene, but with external resources etc.
 		</constant>
+		<constant name="REMOTE_HISTORY" value="-9" enum="SpecialHistory">
+			History associated with remote inspector. Used when live editing a running project.
+		</constant>
 		<constant name="INVALID_HISTORY" value="-99" enum="SpecialHistory">
 			Invalid "null" history. It's a special value, not associated with any object.
 		</constant>

editor/debugger/editor_debugger_node.cpp

@@ -36,6 +36,7 @@
 #include "editor/editor_log.h"
 #include "editor/editor_node.h"
 #include "editor/editor_settings.h"
+#include "editor/editor_undo_redo_manager.h"
 #include "editor/inspector_dock.h"
 #include "editor/plugins/editor_debugger_plugin.h"
 #include "editor/plugins/script_editor_plugin.h"
@@ -274,6 +275,7 @@ void EditorDebuggerNode::stop(bool p_force) {
 	});
 	_break_state_changed();
 	breakpoints.clear();
+	EditorNode::get_undo_redo()->clear_history(false, EditorUndoRedoManager::REMOTE_HISTORY);
 	set_process(false);
 }
 

editor/editor_undo_redo_manager.cpp

@@ -33,6 +33,7 @@
 #include "core/io/resource.h"
 #include "core/os/os.h"
 #include "core/templates/local_vector.h"
+#include "editor/debugger/editor_debugger_inspector.h"
 #include "editor/debugger/editor_debugger_node.h"
 #include "editor/editor_log.h"
 #include "editor/editor_node.h"
@@ -59,6 +60,10 @@ UndoRedo *EditorUndoRedoManager::get_history_undo_redo(int p_idx) const {
 int EditorUndoRedoManager::get_history_id_for_object(Object *p_object) const {
 	int history_id = INVALID_HISTORY;
 
+	if (Object::cast_to<EditorDebuggerRemoteObject>(p_object)) {
+		return REMOTE_HISTORY;
+	}
+
 	if (Node *node = Object::cast_to<Node>(p_object)) {
 		Node *edited_scene = EditorNode::get_singleton()->get_edited_scene();
 
@@ -277,6 +282,14 @@ bool EditorUndoRedoManager::undo() {
 		}
 	}
 
+	{
+		History &history = get_or_create_history(REMOTE_HISTORY);
+		if (!history.undo_stack.is_empty() && history.undo_stack.back()->get().timestamp > global_timestamp) {
+			selected_history = history.id;
+			global_timestamp = history.undo_stack.back()->get().timestamp;
+		}
+	}
+
 	{
 		History &history = get_or_create_history(EditorNode::get_editor_data().get_current_edited_scene_history_id());
 		if (!history.undo_stack.is_empty() && history.undo_stack.back()->get().timestamp > global_timestamp) {
@@ -322,6 +335,14 @@ bool EditorUndoRedoManager::redo() {
 		}
 	}
 
+	{
+		History &history = get_or_create_history(REMOTE_HISTORY);
+		if (!history.redo_stack.is_empty() && history.redo_stack.back()->get().timestamp < global_timestamp) {
+			selected_history = history.id;
+			global_timestamp = history.redo_stack.back()->get().timestamp;
+		}
+	}
+
 	{
 		History &history = get_or_create_history(EditorNode::get_editor_data().get_current_edited_scene_history_id());
 		if (!history.redo_stack.is_empty() && history.redo_stack.back()->get().timestamp < global_timestamp) {
@@ -367,7 +388,7 @@ bool EditorUndoRedoManager::is_history_unsaved(int p_id) {
 
 bool EditorUndoRedoManager::has_undo() {
 	for (const KeyValue<int, History> &E : history_map) {
-		if ((E.key == GLOBAL_HISTORY || E.key == EditorNode::get_editor_data().get_current_edited_scene_history_id()) && !E.value.undo_stack.is_empty()) {
+		if ((E.key == GLOBAL_HISTORY || E.key == REMOTE_HISTORY || E.key == EditorNode::get_editor_data().get_current_edited_scene_history_id()) && !E.value.undo_stack.is_empty()) {
 			return true;
 		}
 	}
@@ -376,7 +397,7 @@ bool EditorUndoRedoManager::has_undo() {
 
 bool EditorUndoRedoManager::has_redo() {
 	for (const KeyValue<int, History> &E : history_map) {
-		if ((E.key == GLOBAL_HISTORY || E.key == EditorNode::get_editor_data().get_current_edited_scene_history_id()) && !E.value.redo_stack.is_empty()) {
+		if ((E.key == GLOBAL_HISTORY || E.key == REMOTE_HISTORY || E.key == EditorNode::get_editor_data().get_current_edited_scene_history_id()) && !E.value.redo_stack.is_empty()) {
 			return true;
 		}
 	}
@@ -385,7 +406,11 @@ bool EditorUndoRedoManager::has_redo() {
 
 void EditorUndoRedoManager::clear_history(bool p_increase_version, int p_idx) {
 	if (p_idx != INVALID_HISTORY) {
-		get_or_create_history(p_idx).undo_redo->clear_history(p_increase_version);
+		History &history = get_or_create_history(p_idx);
+		history.undo_redo->clear_history(p_increase_version);
+		history.undo_stack.clear();
+		history.redo_stack.clear();
+
 		if (!p_increase_version) {
 			set_history_as_saved(p_idx);
 		}
@@ -414,6 +439,14 @@ String EditorUndoRedoManager::get_current_action_name() {
 			}
 		}
 
+		{
+			History &history = get_or_create_history(REMOTE_HISTORY);
+			if (!history.undo_stack.is_empty() && history.undo_stack.back()->get().timestamp > global_timestamp) {
+				selected_history = &history;
+				global_timestamp = history.undo_stack.back()->get().timestamp;
+			}
+		}
+
 		{
 			History &history = get_or_create_history(EditorNode::get_editor_data().get_current_edited_scene_history_id());
 			if (!history.undo_stack.is_empty() && history.undo_stack.back()->get().timestamp > global_timestamp) {
@@ -477,6 +510,7 @@ void EditorUndoRedoManager::_bind_methods() {
 	ADD_SIGNAL(MethodInfo("version_changed"));
 
 	BIND_ENUM_CONSTANT(GLOBAL_HISTORY);
+	BIND_ENUM_CONSTANT(REMOTE_HISTORY);
 	BIND_ENUM_CONSTANT(INVALID_HISTORY);
 }
 

editor/editor_undo_redo_manager.h

@@ -41,6 +41,7 @@ class EditorUndoRedoManager : public RefCounted {
 public:
 	enum SpecialHistory {
 		GLOBAL_HISTORY = 0,
+		REMOTE_HISTORY = -9,
 		INVALID_HISTORY = -99,
 	};