added some UI helpers for GH components

CHANGELOG.md

@@ -12,6 +12,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 * Added `compas_rhino.install_with_pip` with corresponding command line utility `install_in_rhino`.
 * Added support for `.stp` file extension in addition to `.step` for `RhinoBrep.from_step()` and `RhinoBrep.to_step()` methods.
 * Added `volume()` method to `compas.datastructures.Mesh` for computing the volume of closed meshes using signed volume of triangles.
+* Added functions `warning`, `message`, `error` and `remark` to `compas_ghpython`.
 
 ### Changed
 

src/compas_ghpython/__init__.py

@@ -8,6 +8,11 @@
 
 from compas_rhino import unload_modules  # noqa: F401
 
+try:
+    import Grasshopper
+except ImportError:
+    # We're not running inside Grasshopper, fail silently
+    pass
 
 __version__ = "2.14.1"
 
@@ -16,6 +21,11 @@
     "get_grasshopper_library_path",
     "get_grasshopper_userobjects_path",
     "fetch_ghio_lib",
+    "create_id",
+    "warning",
+    "error",
+    "remark",
+    "message",
 ]
 __all_plugins__ = [
     "compas_ghpython.install",
@@ -56,6 +66,58 @@ def create_id(component, name):
     return "{}_{}".format(name, component.InstanceGuid)
 
 
+def warning(component, message):
+    """Add a warning message to the component.
+
+    Parameters
+    ----------
+    component : Grasshopper.Kernel.IGH_Component
+        The component instance. Pre-Rhino8 use `self`. Post-Rhino8 use `ghenv.Component`.
+    message : str
+        The message to display.
+    """
+    component.AddRuntimeMessage(Grasshopper.Kernel.GH_RuntimeMessageLevel.Warning, message)
+
+
+def error(component, message):
+    """Add an error message to the component.
+
+    Parameters
+    ----------
+    component : Grasshopper.Kernel.IGH_Component
+        The component instance. Pre-Rhino8 use `self`. Post-Rhino8 use `ghenv.Component`.
+    message : str
+        The message to display.
+    """
+    component.AddRuntimeMessage(Grasshopper.Kernel.GH_RuntimeMessageLevel.Error, message)
+
+
+def remark(component, message):
+    """Add a remark message to the component.
+
+    Parameters
+    ----------
+    component : Grasshopper.Kernel.IGH_Component
+        The component instance. Pre-Rhino8 use `self`. Post-Rhino8 use `ghenv.Component`.
+    message : str
+        The message to display.
+    """
+    component.AddRuntimeMessage(Grasshopper.Kernel.GH_RuntimeMessageLevel.Remark, message)
+
+
+def message(component, message):
+    """Add a text that will appear under the component.
+
+    Parameters
+    ----------
+    component : Grasshopper.Kernel.IGH_Component
+        The component instance. Pre-Rhino8 use `self`. Post-Rhino8 use `ghenv.Component`.
+    message : str
+        The message to display.
+    """
+    component.Message = message
+
+
 # =============================================================================
 # Managed Plugin
 # =============================================================================