up

__init__.py

@@ -16,9 +16,11 @@ bl_info = {
 def register():
     registry.blender_register_classes()
     bpy.types.NODE_MT_add.append(tree.draw_add_menu)
+    bpy.app.handlers.depsgraph_update_post.append(tree.depsgraph_update_handler)
     print('Nodeslicer Loaded')
 
 def unregister():
+    bpy.app.handlers.depsgraph_update_post.remove(tree.depsgraph_update_handler)
     bpy.types.NODE_MT_add.remove(tree.draw_add_menu)
     registry.blender_unregister_classes()
     print('Nodeslicer Unloaded')

core/nodeslicer/nodes.py

@@ -835,18 +835,28 @@ class SLICENODE_GcodeToFile(ExecSliceNode):
 @register_class
 class SLICENODE_GcodeToTextBlock(ExecSliceNode):
     bl_label = "Gcode to Text Block"
-    button_label = "Create Text Block"
+    button_label = "Update Text Block"
+
+    text_block_name: bpy.props.StringProperty(name="Text Block Name", default="NodeSlicer_Gcode.gcode") # pyright: ignore[reportInvalidTypeForm]
 
     def init(self, context):
         self._init_exec()
         self.add_input("SLICESOCK_Gcode")
 
+    def draw_buttons(self, context, layout):
+        super().draw_buttons(context, layout)
+        layout.prop(self, "text_block_name")
+
     def evaluate(self, operator=None):
         gcode: str = resolve_input(self.inputs.get("Gcode"))
         if not gcode:
             return 'ok'
 
-        text_block = bpy.data.texts.new(name="NodeSlicer_Gcode.gcode")
+        name = self.text_block_name
+        text_block = bpy.data.texts.get(name)
+        if text_block is None:
+            text_block = bpy.data.texts.new(name=name)
+
         text_block.from_string(gcode)
 
         # Attempt to show in an open text editor
@@ -859,7 +869,6 @@ class SLICENODE_GcodeToTextBlock(ExecSliceNode):
                             space.text = text_block
 
         return 'ok'
-
 @register_class
 class SLICENODE_StartPrint(ExecSliceNode):
     bl_label = "Start Print"
@@ -1033,9 +1042,15 @@ class SLICENODE_Executor(ExecSliceNode, SliceNodeJoiner):
     button_label = "Execute All"
     socket_type = "SLICESOCK_ExecutionLink"
 
+    auto_refresh: bpy.props.BoolProperty(name="Auto-refresh", default=False) # pyright: ignore[reportInvalidTypeForm]
+
     def init(self, context):
         self._init_exec()
 
+    def draw_buttons(self, context, layout):
+        super().draw_buttons(context, layout)
+        layout.prop(self, "auto_refresh")
+
     def evaluate(self, operator=None):
         for i, job in enumerate(self.inputs):
             # Resolve the input to get the connected node(s)

core/nodeslicer/tree.py

@@ -2,12 +2,72 @@ from __future__ import annotations
 from typing import TYPE_CHECKING
 import bpy
 from bpy.types import NodeTree, Operator, Menu
+from bpy.app.handlers import persistent
 
 from ...registry import register_class
 
 if TYPE_CHECKING:
     from bpy.stub_internal.rna_enums import OperatorReturnItems
 
+def get_referenced_objects(node, visited=None):
+    if visited is None:
+        visited = set()
+    if node in visited:
+        return set()
+    visited.add(node)
+
+    objs = set()
+    # Check all input sockets for objects
+    for inp in node.inputs:
+        # If it's an object socket, it might have a value if not linked
+        if inp.bl_idname == "SLICESOCK_Object":
+             if not inp.is_linked and inp.value:
+                 objs.add(inp.value)
+        
+        # Always follow links to find more objects upstream
+        if inp.is_linked:
+            for link in inp.links:
+                objs.update(get_referenced_objects(link.from_node, visited))
+    
+    # Also check output sockets of the node itself, 
+    # as some nodes might "hold" an object (like InputObject)
+    for outp in node.outputs:
+        if outp.bl_idname == "SLICESOCK_Object":
+            if outp.value:
+                objs.add(outp.value)
+
+    return objs
+
+_is_updating = False
+
+@persistent
+def depsgraph_update_handler(scene, depsgraph):
+    global _is_updating
+    if _is_updating:
+        return
+
+    updated_objects = {update.id.name for update in depsgraph.updates if isinstance(update.id, bpy.types.Object)}
+    if not updated_objects:
+        return
+
+    for tree in bpy.data.node_groups:
+        if tree.bl_idname != "SLICETREE_NodeTree":
+            continue
+        
+        for node in tree.nodes:
+            if node.bl_idname == "SLICENODE_Executor" and getattr(node, "auto_refresh", False):
+                referenced = get_referenced_objects(node)
+                if any(obj.name in updated_objects for obj in referenced):
+                    _is_updating = True
+                    try:
+                        node.evaluate()
+                    except Exception as e:
+                        print(f"Auto-refresh failed: {e}")
+                        import traceback
+                        traceback.print_exc()
+                    finally:
+                        _is_updating = False
+
 @register_class
 class SLICETREE_NodeTree(NodeTree):
     bl_idname = "SLICETREE_NodeTree"