forked from bartvdbraak/blender
support for dynamic items in bpy.props.EnumProperty(), the items keyword argument can optionally be a function rather then a list.
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@ -743,6 +743,7 @@ int RNA_property_string_default_length(PointerRNA *ptr, PropertyRNA *prop);
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int RNA_property_enum_get(PointerRNA *ptr, PropertyRNA *prop);
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void RNA_property_enum_set(PointerRNA *ptr, PropertyRNA *prop, int value);
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int RNA_property_enum_get_default(PointerRNA *ptr, PropertyRNA *prop);
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void *RNA_property_enum_py_data_get(PropertyRNA *prop);
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PointerRNA RNA_property_pointer_get(PointerRNA *ptr, PropertyRNA *prop);
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void RNA_property_pointer_set(PointerRNA *ptr, PropertyRNA *prop, PointerRNA ptr_value);
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@ -90,6 +90,7 @@ PropertyRNA *RNA_def_string_file_name(StructOrFunctionRNA *cont, const char *ide
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PropertyRNA *RNA_def_enum(StructOrFunctionRNA *cont, const char *identifier, const EnumPropertyItem *items, int default_value, const char *ui_name, const char *ui_description);
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PropertyRNA *RNA_def_enum_flag(StructOrFunctionRNA *cont, const char *identifier, const EnumPropertyItem *items, int default_value, const char *ui_name, const char *ui_description);
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void RNA_def_enum_funcs(PropertyRNA *prop, EnumPropertyItemFunc itemfunc);
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void RNA_def_enum_py_data(PropertyRNA *prop, void *py_data);
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PropertyRNA *RNA_def_float(StructOrFunctionRNA *cont, const char *identifier, float default_value, float hardmin, float hardmax, const char *ui_name, const char *ui_description, float softmin, float softmax);
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PropertyRNA *RNA_def_float_vector(StructOrFunctionRNA *cont, const char *identifier, int len, const float *default_value, float hardmin, float hardmax, const char *ui_name, const char *ui_description, float softmin, float softmax);
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@ -2223,7 +2223,7 @@ static void rna_generate_property(FILE *f, StructRNA *srna, const char *nest, Pr
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}
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case PROP_ENUM: {
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EnumPropertyRNA *eprop= (EnumPropertyRNA*)prop;
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fprintf(f, "\t%s, %s, %s, ", rna_function_string(eprop->get), rna_function_string(eprop->set), rna_function_string(eprop->itemf));
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fprintf(f, "\t%s, %s, %s, NULL, ", rna_function_string(eprop->get), rna_function_string(eprop->set), rna_function_string(eprop->itemf));
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if(eprop->item)
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fprintf(f, "rna_%s%s_%s_items, ", srna->identifier, strnest, prop->identifier);
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else
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@ -2120,6 +2120,14 @@ int RNA_property_enum_get_default(PointerRNA *ptr, PropertyRNA *prop)
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return eprop->defaultvalue;
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}
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void *RNA_property_enum_py_data_get(PropertyRNA *prop)
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{
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EnumPropertyRNA *eprop= (EnumPropertyRNA*)prop;
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BLI_assert(RNA_property_type(prop) == PROP_ENUM);
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return eprop->py_data;
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}
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PointerRNA RNA_property_pointer_get(PointerRNA *ptr, PropertyRNA *prop)
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{
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@ -2276,6 +2276,12 @@ void RNA_def_enum_funcs(PropertyRNA *prop, EnumPropertyItemFunc itemfunc)
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eprop->itemf= itemfunc;
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}
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void RNA_def_enum_py_data(PropertyRNA *prop, void *py_data)
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{
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EnumPropertyRNA *eprop= (EnumPropertyRNA*)prop;
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eprop->py_data= py_data;
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}
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PropertyRNA *RNA_def_float(StructOrFunctionRNA *cont_, const char *identifier, float default_value,
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float hardmin, float hardmax, const char *ui_name, const char *ui_description, float softmin, float softmax)
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{
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@ -251,6 +251,7 @@ typedef struct EnumPropertyRNA {
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PropEnumGetFunc get;
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PropEnumSetFunc set;
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PropEnumItemFunc itemf;
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void *py_data; /* store py callback here */
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EnumPropertyItem *item;
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int totitem;
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@ -47,6 +47,8 @@
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#include "../generic/py_capi_utils.h"
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extern BPy_StructRNA *bpy_context_module;
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static EnumPropertyItem property_flag_items[]= {
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{PROP_HIDDEN, "HIDDEN", 0, "Hidden", ""},
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{PROP_ANIMATABLE, "ANIMATABLE", 0, "Animateable", ""},
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@ -741,6 +743,95 @@ static EnumPropertyItem *enum_items_from_py(PyObject *seq_fast, PyObject *def, i
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return items;
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}
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static EnumPropertyItem *bpy_props_enum_itemf(struct bContext *C, PointerRNA *ptr, PropertyRNA *prop, int *free)
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{
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PyGILState_STATE gilstate;
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PyObject *py_func= RNA_property_enum_py_data_get(prop);
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PyObject *self= NULL;
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PyObject *args;
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PyObject *items; /* returned from the function call */
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EnumPropertyItem *eitems= NULL;
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int err= 0;
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bpy_context_set(C, &gilstate);
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args= PyTuple_New(2);
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/* first get self */
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/* operators can store their own instance for later use */
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if(ptr->data) {
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void **instance = RNA_struct_instance(ptr);
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if(instance) {
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if(*instance) {
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self= *instance;
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Py_INCREF(self);
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}
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}
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}
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if(self == NULL) {
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self= pyrna_struct_CreatePyObject(ptr);
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}
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PyTuple_SET_ITEM(args, 0, self);
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/* now get the context */
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PyTuple_SET_ITEM(args, 1, (PyObject *)bpy_context_module);
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Py_INCREF(bpy_context_module);
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items= PyObject_CallObject(py_func, args);
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Py_DECREF(args);
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if(items==NULL) {
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err= -1;
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}
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else {
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PyObject *items_fast;
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int defvalue_dummy=0;
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if(!(items_fast= PySequence_Fast(items, "EnumProperty(...): return value from the callback was not a sequence"))) {
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err= -1;
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}
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else {
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eitems= enum_items_from_py(items_fast, NULL, &defvalue_dummy, (RNA_property_flag(prop) & PROP_ENUM_FLAG)!=0);
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Py_DECREF(items_fast);
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if(!eitems) {
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err= -1;
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}
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}
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Py_DECREF(items);
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}
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if(err != -1) { /* worked */
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*free= 1;
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}
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else {
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/* since we return to C code we can't leave the error */
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PyCodeObject *f_code= (PyCodeObject *)PyFunction_GET_CODE(py_func);
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PyErr_Print();
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PyErr_Clear();
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/* use py style error */
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fprintf(stderr, "File \"%s\", line %d, in %s\n",
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_PyUnicode_AsString(f_code->co_filename),
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f_code->co_firstlineno,
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_PyUnicode_AsString(((PyFunctionObject *)py_func)->func_name)
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);
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eitems= DummyRNA_NULL_items;
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}
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bpy_context_clear(C, &gilstate);
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return eitems;
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}
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PyDoc_STRVAR(BPy_EnumProperty_doc,
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".. function:: EnumProperty(items, name=\"\", description=\"\", default=\"\", options={'ANIMATABLE'})\n"
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"\n"
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@ -752,8 +843,8 @@ BPY_PROPDEF_DESC_DOC
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" :type default: string or set\n"
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" :arg options: Enumerator in ['HIDDEN', 'ANIMATABLE', 'ENUM_FLAG'].\n"
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" :type options: set\n"
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" :arg items: sequence of enum items formatted: [(identifier, name, description), ...] where the identifier is used for python access and other values are used for the interface.\n"
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" :type items: sequence of string triplets\n"
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" :arg items: sequence of enum items formatted: [(identifier, name, description), ...] where the identifier is used for python access and other values are used for the interface. For dynamic values a callback can be passed which returns a list in the format described, taking 2 arguments - self and context argument\n"
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" :type items: sequence of string triplets or a function\n"
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);
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static PyObject *BPy_EnumProperty(PyObject *self, PyObject *args, PyObject *kw)
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{
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@ -772,6 +863,7 @@ static PyObject *BPy_EnumProperty(PyObject *self, PyObject *args, PyObject *kw)
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PropertyRNA *prop;
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PyObject *pyopts= NULL;
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int opts=0;
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short is_itemf= FALSE;
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if (!PyArg_ParseTupleAndKeywords(args, kw,
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"s#O|ssOO!:EnumProperty",
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@ -784,26 +876,58 @@ static PyObject *BPy_EnumProperty(PyObject *self, PyObject *args, PyObject *kw)
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BPY_PROPDEF_CHECK(EnumProperty, property_flag_enum_items)
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if(!(items_fast= PySequence_Fast(items, "EnumProperty(...): expected a sequence of tuples for the enum items"))) {
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return NULL;
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/* items can be a list or a callable */
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if(PyFunction_Check(items)) { /* dont use PyCallable_Check because we need the function code for errors */
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PyCodeObject *f_code= (PyCodeObject *)PyFunction_GET_CODE(items);
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if(f_code->co_argcount != 2) {
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PyErr_Format(PyExc_ValueError,
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"EnumProperty(...): expected 'items' function to take 2 arguments, not %d",
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f_code->co_argcount);
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return NULL;
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}
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if(def) {
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/* note, using type error here is odd but python does this for invalid arguments */
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PyErr_SetString(PyExc_TypeError,
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"EnumProperty(...): 'default' can't be set when 'items' is a function");
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return NULL;
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}
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is_itemf= TRUE;
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eitems= DummyRNA_NULL_items;
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}
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else {
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if(!(items_fast= PySequence_Fast(items, "EnumProperty(...): expected a sequence of tuples for the enum items or a function"))) {
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return NULL;
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}
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eitems= enum_items_from_py(items_fast, def, &defvalue, (opts & PROP_ENUM_FLAG)!=0);
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eitems= enum_items_from_py(items_fast, def, &defvalue, (opts & PROP_ENUM_FLAG)!=0);
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Py_DECREF(items_fast);
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Py_DECREF(items_fast);
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if(!eitems)
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return NULL;
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if(!eitems) {
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return NULL;
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}
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}
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if(opts & PROP_ENUM_FLAG) prop= RNA_def_enum_flag(srna, id, eitems, defvalue, name, description);
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else prop= RNA_def_enum(srna, id, eitems, defvalue, name, description);
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if(is_itemf) {
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RNA_def_enum_funcs(prop, bpy_props_enum_itemf);
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RNA_def_enum_py_data(prop, (void *)items);
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/* Py_INCREF(items); */ /* watch out!, if user is tricky they can probably crash blender if they manage to free the callback, take care! */
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}
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if(pyopts) {
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if(opts & PROP_HIDDEN) RNA_def_property_flag(prop, PROP_HIDDEN);
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if((opts & PROP_ANIMATABLE)==0) RNA_def_property_clear_flag(prop, PROP_ANIMATABLE);
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}
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RNA_def_property_duplicate_pointers(srna, prop);
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MEM_freeN(eitems);
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if(is_itemf == FALSE) {
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MEM_freeN(eitems);
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}
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}
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Py_RETURN_NONE;
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}
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