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# This script generates the Dialogs interface for Python.
# It uses the "bgen" package to generate C code.
# It execs the file dlggen.py which contain the function definitions
# (dlggen.py was generated by dlgscan.py, scanning the <Dialogs.h> header file).
from macsupport import *
# Create the type objects
DialogPtr = OpaqueByValueType("DialogPtr", "DlgObj")
DialogRef = DialogPtr
# An OptHandle is either a handle or None (in case NULL is passed in).
# This is needed for GetDialogItem().
OptHandle = OpaqueByValueType("Handle", "OptResObj")
ModalFilterProcPtr = InputOnlyType("PyObject*", "O")
ModalFilterProcPtr.passInput = lambda name: "NewModalFilterProc(Dlg_PassFilterProc(%s))" % name
ModalFilterUPP = ModalFilterProcPtr
RgnHandle = OpaqueByValueType("RgnHandle", "ResObj")
DITLMethod = Type("DITLMethod", "h")
DialogItemIndex = Type("DialogItemIndex", "h")
DialogItemType = Type("DialogItemType", "h")
DialogItemIndexZeroBased = Type("DialogItemIndexZeroBased", "h")
AlertType = Type("AlertType", "h")
StringPtr = Str255
includestuff = includestuff + """
#include <Dialogs.h>
#ifndef HAVE_UNIVERSAL_HEADERS
#define NewModalFilterProc(x) (x)
#endif
#define resNotFound -192 /* Can't include <Errors.h> because of Python's "errors.h" */
/* XXX Shouldn't this be a stack? */
static PyObject *Dlg_FilterProc_callback = NULL;
static PyObject *DlgObj_New(DialogPtr); /* Forward */
static pascal Boolean Dlg_UnivFilterProc(DialogPtr dialog,
EventRecord *event,
short *itemHit)
{
Boolean rv;
PyObject *args, *res;
PyObject *callback = Dlg_FilterProc_callback;
if (callback == NULL)
return 0; /* Default behavior */
Dlg_FilterProc_callback = NULL; /* We'll restore it when call successful */
args = Py_BuildValue("O&O&", WinObj_WhichWindow, dialog, PyMac_BuildEventRecord, event);
if (args == NULL)
res = NULL;
else {
res = PyEval_CallObject(callback, args);
Py_DECREF(args);
}
if (res == NULL) {
PySys_WriteStderr("Exception in Dialog Filter\\n");
PyErr_Print();
*itemHit = -1; /* Fake return item */
return 1; /* We handled it */
}
else {
Dlg_FilterProc_callback = callback;
if (PyInt_Check(res)) {
*itemHit = PyInt_AsLong(res);
rv = 1;
}
else
rv = PyObject_IsTrue(res);
}
Py_DECREF(res);
return rv;
}
static ModalFilterProcPtr
Dlg_PassFilterProc(PyObject *callback)
{
PyObject *tmp = Dlg_FilterProc_callback;
Dlg_FilterProc_callback = NULL;
if (callback == Py_None) {
Py_XDECREF(tmp);
return NULL;
}
Py_INCREF(callback);
Dlg_FilterProc_callback = callback;
Py_XDECREF(tmp);
return &Dlg_UnivFilterProc;
}
static PyObject *Dlg_UserItemProc_callback = NULL;
static pascal void Dlg_UnivUserItemProc(DialogPtr dialog,
short item)
{
PyObject *args, *res;
if (Dlg_UserItemProc_callback == NULL)
return; /* Default behavior */
Dlg_FilterProc_callback = NULL; /* We'll restore it when call successful */
args = Py_BuildValue("O&h", WinObj_WhichWindow, dialog, item);
if (args == NULL)
res = NULL;
else {
res = PyEval_CallObject(Dlg_UserItemProc_callback, args);
Py_DECREF(args);
}
if (res == NULL) {
PySys_WriteStderr("Exception in Dialog UserItem proc\\n");
PyErr_Print();
}
Py_XDECREF(res);
return;
}
extern PyMethodChain WinObj_chain;
"""
# Define a class which specializes our object definition
class MyObjectDefinition(GlobalObjectDefinition):
def __init__(self, name, prefix = None, itselftype = None):
GlobalObjectDefinition.__init__(self, name, prefix, itselftype)
self.basechain = "&WinObj_chain"
def outputInitStructMembers(self):
GlobalObjectDefinition.outputInitStructMembers(self)
Output("SetWRefCon(itself, (long)it);")
def outputCheckNewArg(self):
Output("if (itself == NULL) return Py_None;")
def outputCheckConvertArg(self):
Output("if (v == Py_None) { *p_itself = NULL; return 1; }")
Output("if (PyInt_Check(v)) { *p_itself = (DialogPtr)PyInt_AsLong(v);")
Output(" return 1; }")
def outputFreeIt(self, itselfname):
Output("DisposeDialog(%s);", itselfname)
# Create the generator groups and link them
module = MacModule('Dlg', 'Dlg', includestuff, finalstuff, initstuff)
object = MyObjectDefinition('Dialog', 'DlgObj', 'DialogPtr')
module.addobject(object)
# Create the generator classes used to populate the lists
Function = OSErrFunctionGenerator
Method = OSErrMethodGenerator
# Create and populate the lists
functions = []
methods = []
execfile("dlggen.py")
# add the populated lists to the generator groups
for f in functions: module.add(f)
for f in methods: object.add(f)
# Some methods that are currently macro's in C, but will be real routines
# in MacOS 8.
f = Method(ExistingDialogPtr, 'GetDialogWindow', (DialogRef, 'dialog', InMode))
object.add(f)
f = Method(SInt16, 'GetDialogDefaultItem', (DialogRef, 'dialog', InMode))
object.add(f)
f = Method(SInt16, 'GetDialogCancelItem', (DialogRef, 'dialog', InMode))
object.add(f)
f = Method(SInt16, 'GetDialogKeyboardFocusItem', (DialogRef, 'dialog', InMode))
object.add(f)
f = Method(void, 'SetGrafPortOfDialog', (DialogRef, 'dialog', InMode))
object.add(f)
setuseritembody = """
PyObject *new = NULL;
if (!PyArg_ParseTuple(_args, "|O", &new))
return NULL;
if (Dlg_UserItemProc_callback && new && new != Py_None) {
PyErr_SetString(Dlg_Error, "Another UserItemProc is already installed");
return NULL;
}
if (new == Py_None) {
new = NULL;
_res = Py_None;
Py_INCREF(Py_None);
} else {
Py_INCREF(new);
_res = Py_BuildValue("O&", ResObj_New, (Handle)NewUserItemProc(Dlg_UnivUserItemProc));
}
Dlg_UserItemProc_callback = new;
return _res;
"""
f = ManualGenerator("SetUserItemHandler", setuseritembody)
module.add(f)
# generate output
SetOutputFileName('Dlgmodule.c')
module.generate()
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