[Bf-blender-cvs] SVN commit: /data/svn/bf-blender [18121] branches/blender2.5/blender/source /blender/python/intern: minor changes and error checking.

[Campbell Barton]

Revision: 18121
          http://projects.blender.org/plugins/scmsvn/viewcvs.php?view=rev&root=bf-blender&revision=18121
Author:   campbellbarton
Date:     2008-12-28 14:03:37 +0100 (Sun, 28 Dec 2008)

Log Message:
-----------
minor changes and error checking.
tested first PyOperator, basics work now, invoke/exec can be used to make an operator that edits RNA or calls other operators.

Modified Paths:
--------------
    branches/blender2.5/blender/source/blender/python/intern/bpy_operator.c
    branches/blender2.5/blender/source/blender/python/intern/bpy_opwrapper.c

Modified: branches/blender2.5/blender/source/blender/python/intern/bpy_operator.c
===================================================================
--- branches/blender2.5/blender/source/blender/python/intern/bpy_operator.c	2008-12-28 11:51:41 UTC (rev 18120)
+++ branches/blender2.5/blender/source/blender/python/intern/bpy_operator.c	2008-12-28 13:03:37 UTC (rev 18121)
@@ -188,10 +188,9 @@
 	
 	RNA_pointer_create(NULL, NULL, ot->srna, &properties, &ptr);
 	
-	PYOP_props_from_dict(&ptr, kw);
+	error_val= PYOP_props_from_dict(&ptr, kw);
 	
 	if (error_val==0) {
-		//WM_operator_name_call(self->C, self->name, WM_OP_INVOKE_DEFAULT, properties);
 		WM_operator_name_call(self->C, self->name, WM_OP_EXEC_DEFAULT, properties);
 	}
 
@@ -200,7 +199,21 @@
 		MEM_freeN(properties);
 	}
 
-	if (error_val) {
+
+#if 0
+	/* if there is some way to know an operator takes args we should use this */
+	{
+		/* no props */
+		if (kw != NULL) {
+			PyErr_Format(PyExc_AttributeError, "Operator \"%s\" does not take any args", self->name);
+			return NULL;
+		}
+
+		WM_operator_name_call(self->C, self->name, WM_OP_EXEC_DEFAULT, NULL);
+	}
+#endif
+
+	if (error_val==-1) {
 		return NULL;
 	}
 

Modified: branches/blender2.5/blender/source/blender/python/intern/bpy_opwrapper.c
===================================================================
--- branches/blender2.5/blender/source/blender/python/intern/bpy_opwrapper.c	2008-12-28 11:51:41 UTC (rev 18120)
+++ branches/blender2.5/blender/source/blender/python/intern/bpy_opwrapper.c	2008-12-28 13:03:37 UTC (rev 18121)
@@ -38,7 +38,6 @@
 #include "bpy_rna.h"
 #include "bpy_compat.h"
 #include "bpy_util.h"
-#include "bpy_operator.h" /* for PYOP_props_from_dict() */
 
 typedef struct PyOperatorType {
 	void *next, *prev;
@@ -177,6 +176,7 @@
 	{NULL, 0}
 };
 
+/* exec only - no user input */
 static int PYTHON_OT_exec(bContext *C, wmOperator *op)
 {
 	PyOperatorType *pyot = op->type->pyop_data;
@@ -200,19 +200,34 @@
 	Py_DECREF(args);
 	Py_DECREF(kw);
 
-	return OPERATOR_FINISHED;
+	return ret_flag;
 }
 
+/* This invoke function can take events and
+ *
+ * It is up to the pyot->py_invoke() python func to run pyot->py_exec()
+ * the invoke function gets the keyword props as a dict, but can parse them
+ * to py_exec like this...
+ *
+ * def op_exec(x=-1, y=-1, text=""):
+ *     ...
+ *
+ * def op_invoke(event, prop_defs):
+ *     prop_defs['x'] = event['x']
+ *     ...
+ *     op_exec(**prop_defs)
+ *
+ * when there is no invoke function, C calls exec and sets the props.
+ */
 static int PYTHON_OT_invoke(bContext *C, wmOperator *op, wmEvent *event)
 {
 	PyOperatorType *pyot = op->type->pyop_data;
 	PyObject *args= PyTuple_New(2);
-	PyObject *kw= pyop_kwargs_from_operator(op);
 	PyObject *ret;
 	int ret_flag;
 
 	PyTuple_SET_ITEM(args, 0, pyop_dict_from_event(event));
-	PyTuple_SET_ITEM(args, 1, kw);
+	PyTuple_SET_ITEM(args, 1, pyop_kwargs_from_operator(op));
 
 	ret = PyObject_Call(pyot->py_invoke, args, NULL);
 
@@ -224,13 +239,13 @@
 			 /* the returned value could not be converted into a flag */
 			PyErr_Print();
 		}
-		else {
-			/* copy the args back to the prop */
-			if (PYOP_props_from_dict(op->ptr, kw) == -1) {
-				/* one of the dict items didnt convert back to the prop */
-				PyErr_Print();
-			}
-		}
+		/* there is no need to copy the py keyword dict modified by
+		 * pyot->py_invoke(), back to the operator props since they are just
+		 * thrown away anyway
+		 *
+		 * If we ever want to do this and use the props again,
+		 * it can be done with - PYOP_props_from_dict(op->ptr, kw)
+		 */
 	}