Copy prompt parameters from custom workflows

ai_diffusion/custom_workflow.py

@@ -565,6 +565,10 @@ def live_result(self):
         assert self._last_result and self._last_job, "No live result available"
         return self._last_result, self._last_job
 
+    def try_set_params(self, params: dict):
+        self.params = _coerce_with_fallback(params, self.params, self.metadata)
+        self.graph_changed.emit()
+
 
 def _coerce(params: dict[str, Any], types: list[CustomParam]):
     def use(value, default):
@@ -575,3 +579,17 @@ def use(value, default):
         return value
 
     return {t.name: use(params.get(t.name), t.default) for t in types}
+
+
+def _coerce_with_fallback(
+    params: dict[str, Any], fallback: dict[str, Any], types: list[CustomParam]
+):
+    def use(value, fallback, default):
+        value_or_fallback = value if value is not None else fallback
+        if default is None:
+            return value_or_fallback
+        if value_or_fallback is None or not base_type_match(value, default):
+            return default
+        return value_or_fallback
+
+    return {t.name: use(params.get(t.name), fallback.get(t.name), t.default) for t in types}

ai_diffusion/ui/generation.py

@@ -9,7 +9,7 @@
 from ..properties import Binding, Bind, bind, bind_combo, bind_toggle
 from ..image import Bounds, Extent, Image
 from ..jobs import Job, JobQueue, JobState, JobKind, JobParams
-from ..model import Model, InpaintContext, RootRegion, ProgressKind
+from ..model import Model, InpaintContext, RootRegion, ProgressKind, Workspace
 from ..style import Styles
 from ..root import root
 from ..workflow import InpaintMode, FillMode
@@ -374,6 +374,9 @@ def _copy_prompt(self):
             if isinstance(active, RootRegion):
                 active.negative = job.params.metadata.get("negative_prompt", "")
 
+            if self._model.workspace is Workspace.custom and self._model.document.is_active:
+                self._model.custom.try_set_params(job.params.metadata)
+
     def _copy_strength(self):
         if job := self.selected_job:
             self._model.strength = job.params.strength