eager execution - ImageCrop and PreviewImage

comfy_extras/nodes_images.py

@@ -22,6 +22,9 @@ from server import PromptServer
 MAX_RESOLUTION = nodes.MAX_RESOLUTION
 
 class ImageCrop:
+    ALLOW_LIVE_PREVIEW = True
+    WANT_LIVE_PREVIEW = True
+
     @classmethod
     def INPUT_TYPES(s):
         return {"required": { "image": ("IMAGE",),

nodes.py

@@ -1614,6 +1614,8 @@ class SaveImage:
         return { "ui": { "images": results } }
 
 class PreviewImage(SaveImage):
+    WANT_LIVE_PREVIEW = True
+
     def __init__(self):
         self.output_dir = folder_paths.get_temp_directory()
         self.type = "temp"

server.py

@@ -666,6 +666,12 @@ class PromptServer():
 
             if hasattr(obj_class, 'API_NODE'):
                 info['api_node'] = obj_class.API_NODE
+
+            if getattr(obj_class, "WANT_LIVE_PREVIEW", False):
+                info['want_live_preview'] = True
+            if getattr(obj_class, "ALLOW_LIVE_PREVIEW", False):
+                info['allow_live_preview'] = True
+
             return info
 
         @routes.get("/object_info")