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snackmodule.c

#include "config.h"

#ifdef HAVE_ALLOCA_H
#include <alloca.h>
#endif

#include <errno.h>
#include <fcntl.h>
#include <sys/stat.h>
#include <sys/time.h>
#include <unistd.h>

#include "Python.h"
#include "newt.h"
#include "newt_pr.h"

typedef struct snackWidget_s snackWidget;
typedef struct snackGrid_s snackGrid;
typedef struct snackForm_s snackForm;

struct callbackStruct {
    PyObject * cb, * data;
};

/* Integer to pointer, 64-bit-sane */
#define I2P(x) ((void *)(long)(x))

static struct callbackStruct suspend;
static struct callbackStruct helpCallback;

static void emptyDestructor(PyObject * s);

static snackWidget * buttonWidget(PyObject * s, PyObject * args);
static snackWidget * compactbuttonWidget(PyObject * s, PyObject * args);
static PyObject * centeredWindow(PyObject * s, PyObject * args);
static snackWidget * checkboxWidget(PyObject * s, PyObject * args);
static PyObject * choiceWindow(PyObject * s, PyObject * args);
static snackWidget * entryWidget(PyObject * s, PyObject * args);
static PyObject * drawRootText(PyObject * s, PyObject * args);
static PyObject * doResume(PyObject * s, PyObject * args);
static PyObject * doSuspend(PyObject * s, PyObject * args);
static PyObject * doSuspend(PyObject * s, PyObject * args);
static snackForm * formCreate(PyObject * s, PyObject * args);
static snackGrid * gridCreate(PyObject * s, PyObject * args);
static PyObject * gridWrappedWindow(PyObject * s, PyObject * args);
static PyObject * finishScreen(PyObject * s, PyObject * args);
static PyObject * initScreen(PyObject * s, PyObject * args);
static snackWidget * labelWidget(PyObject * s, PyObject * args);
static snackWidget * listboxWidget(PyObject * s, PyObject * args);
static PyObject * messageWindow(PyObject * s, PyObject * args);
static PyObject * openWindow(PyObject * s, PyObject * args);
static PyObject * popHelpLine(PyObject * s, PyObject * args);
static PyObject * popWindow(PyObject * s, PyObject * args);
static PyObject * pushHelpLine(PyObject * s, PyObject * args);
static snackWidget * radioButtonWidget(PyObject * s, PyObject * args);
static PyObject * refreshScreen(PyObject * s, PyObject * args);
static PyObject * scaleWidget(PyObject * s, PyObject * args);
static PyObject * scaleSet(snackWidget * s, PyObject * args);
static PyObject * screenSize(PyObject * s, PyObject * args);
static PyObject * setSuspendCallback(PyObject * s, PyObject * args);
static PyObject * setHelpCallback(PyObject * s, PyObject * args);
static PyObject * reflowText(PyObject * s, PyObject * args);
static snackWidget * textWidget(PyObject * s, PyObject * args);
static PyObject * ternaryWindow(PyObject * s, PyObject * args);
static snackWidget * checkboxTreeWidget(PyObject * s, PyObject * args, PyObject * kwargs);
static PyObject * pywstrlen(PyObject * s, PyObject * args);

static PyMethodDef snackModuleMethods[] = {
    { "button", (PyCFunction) buttonWidget, METH_VARARGS, NULL },
    { "compactbutton", (PyCFunction) compactbuttonWidget, METH_VARARGS, NULL },
    { "checkbox", (PyCFunction) checkboxWidget, METH_VARARGS, NULL },
    { "choice", choiceWindow, METH_VARARGS, NULL },
    { "centeredwindow", centeredWindow, METH_VARARGS, NULL },
    { "drawroottext", drawRootText, METH_VARARGS, NULL },
    { "entry", (PyCFunction) entryWidget, METH_VARARGS, NULL },
    { "finish", finishScreen, METH_VARARGS, NULL },
    { "form", (PyCFunction) formCreate, METH_VARARGS, NULL },
    { "grid", (PyCFunction) gridCreate, METH_VARARGS, NULL },
    { "gridwrappedwindow", gridWrappedWindow, METH_VARARGS, NULL },
    { "helpcallback", setHelpCallback, METH_VARARGS, NULL },
    { "init", initScreen, METH_VARARGS, NULL },
    { "label", (PyCFunction) labelWidget, METH_VARARGS, NULL },
    { "listbox", (PyCFunction) listboxWidget, METH_VARARGS, NULL },
    { "message", messageWindow, METH_VARARGS, NULL },
    { "openwindow", openWindow, METH_VARARGS, NULL },
    { "pophelpline", popHelpLine, METH_VARARGS, NULL },
    { "popwindow", popWindow, METH_VARARGS, NULL },
    { "pushhelpline", pushHelpLine, METH_VARARGS, NULL },
    { "radiobutton", (PyCFunction) radioButtonWidget, METH_VARARGS, NULL },
    { "reflow", (PyCFunction) reflowText, METH_VARARGS, NULL },
    { "refresh", refreshScreen, METH_VARARGS, NULL },
    { "resume", doResume, METH_VARARGS, NULL },
    { "scale", scaleWidget, METH_VARARGS, NULL },
    { "size", screenSize, METH_VARARGS, NULL },
    { "suspend", doSuspend, METH_VARARGS, NULL },
    { "suspendcallback", setSuspendCallback, METH_VARARGS, NULL },
    { "ternary", ternaryWindow, METH_VARARGS, NULL },
    { "textbox", (PyCFunction) textWidget, METH_VARARGS, NULL },
    { "checkboxtree", (PyCFunction) checkboxTreeWidget, METH_VARARGS | METH_KEYWORDS, NULL },
    { "wstrlen", (PyCFunction) pywstrlen, METH_VARARGS | METH_KEYWORDS, NULL },
    { NULL }
} ;

struct snackGrid_s {
    PyObject_HEAD
    newtGrid grid;
} ;

static PyObject * gridGetAttr(PyObject * s, char * name);
static PyObject * gridPlace(snackGrid * s, PyObject * args);
static PyObject * gridSetField(snackGrid * s, PyObject * args);

static PyMethodDef gridMethods[] = {
    { "place", (PyCFunction) gridPlace, METH_VARARGS, NULL },
    { "setfield", (PyCFunction) gridSetField, METH_VARARGS, NULL },
    { NULL }
};

static PyTypeObject snackGridType = {
        PyObject_HEAD_INIT(&PyType_Type)
        0,                              /* ob_size */
        "snackgrid",                    /* tp_name */
        sizeof(snackGrid),              /* tp_size */
        0,                              /* tp_itemsize */
        emptyDestructor,                        /* tp_dealloc */
        0,                              /* tp_print */
        gridGetAttr,                /* tp_getattr */
        0,                              /* tp_setattr */
        0,                              /* tp_compare */
        0,                              /* tp_repr */
        0,                              /* tp_as_number */
        0,                              /* tp_as_sequence */
        0,                          /* tp_as_mapping */
};

struct snackForm_s {
    PyObject_HEAD
    newtComponent fo;
} ;

static PyObject * formGetAttr(PyObject * s, char * name);
static PyObject * formAdd(snackForm * s, PyObject * args);
static PyObject * formDraw(snackForm * s, PyObject * args);
static PyObject * formRun(snackForm * s, PyObject * args);
static PyObject * formHotKey(snackForm * s, PyObject * args);
static PyObject * formSetCurrent(snackForm * form, PyObject * args);
static PyObject * formSetTimer(snackForm * form, PyObject * args);
static PyObject * formWatchFD(snackForm * form, PyObject * args);

static PyMethodDef formMethods[] = {
    { "add", (PyCFunction) formAdd, METH_VARARGS, NULL },
    { "draw", (PyCFunction) formDraw, METH_VARARGS, NULL },
    { "run", (PyCFunction) formRun, METH_VARARGS, NULL },
    { "addhotkey", (PyCFunction) formHotKey, METH_VARARGS, NULL },
    { "setcurrent", (PyCFunction) formSetCurrent, METH_VARARGS, NULL },
    { "settimer", (PyCFunction) formSetTimer, METH_VARARGS, NULL },
    { "watchfd", (PyCFunction) formWatchFD, METH_VARARGS, NULL },
    { NULL }
};

static PyTypeObject snackFormType = {
        PyObject_HEAD_INIT(&PyType_Type)
        0,                              /* ob_size */
        "snackform",                    /* tp_name */
        sizeof(snackForm),              /* tp_size */
        0,                              /* tp_itemsize */
        emptyDestructor,                  /* tp_dealloc */
        0,                              /* tp_print */
        formGetAttr,                /* tp_getattr */
        0,                              /* tp_setattr */
        0,                              /* tp_compare */
        0,                              /* tp_repr */
        0,                              /* tp_as_number */
        0,                              /* tp_as_sequence */
        0,                          /* tp_as_mapping */
};

struct snackWidget_s {
    PyObject_HEAD
    newtComponent co;
    char achar;
    void * apointer;
    int anint;
    struct callbackStruct scs;
} ;

static PyObject * widgetAddCallback(snackWidget * s, PyObject * args);
static PyObject * widgetGetAttr(PyObject * s, char * name);
static void widgetDestructor(PyObject * s);
static PyObject * widgetEntrySetValue(snackWidget * s, PyObject * args);
static PyObject * widgetLabelText(snackWidget * s, PyObject * args);
static PyObject * widgetListboxSetW(snackWidget * s, PyObject * args);
static PyObject * widgetListboxAdd(snackWidget * s, PyObject * args);
static PyObject * widgetListboxIns(snackWidget * s, PyObject * args);
static PyObject * widgetListboxDel(snackWidget * s, PyObject * args);
static PyObject * widgetListboxGet(snackWidget * s, PyObject * args);
static PyObject * widgetListboxSet(snackWidget * s, PyObject * args);
static PyObject * widgetListboxClear(snackWidget * s, PyObject * args);
static PyObject * widgetTextboxText(snackWidget * s, PyObject * args);
static PyObject * widgetCheckboxTreeAddItem(snackWidget * s, PyObject * args);
static PyObject * widgetCheckboxTreeGetSel(snackWidget * s, PyObject * args);
static PyObject * widgetCheckboxTreeGetCur(snackWidget * s, PyObject * args);
static PyObject * widgetCheckboxTreeSetEntry(snackWidget * s, PyObject * args);
static PyObject * widgetCheckboxTreeSetWidth(snackWidget * s, PyObject * args);
static PyObject * widgetCheckboxTreeSetCurrent(snackWidget * s, PyObject * args);
static PyObject * widgetCheckboxTreeSetEntryValue(snackWidget * s, PyObject * args);
static PyObject * widgetCheckboxTreeGetEntryValue(snackWidget * s, PyObject * args);
static PyObject * widgetEntrySetFlags(snackWidget * s, PyObject * args);
static PyObject * widgetCheckboxSetFlags(snackWidget * s, PyObject * args);
static PyObject * widgetCheckboxSetValue(snackWidget * s, PyObject * args);

static PyMethodDef widgetMethods[] = {
    { "setCallback", (PyCFunction) widgetAddCallback, METH_VARARGS, NULL },
    { "labelText", (PyCFunction) widgetLabelText, METH_VARARGS, NULL },
    { "textboxText", (PyCFunction) widgetTextboxText, METH_VARARGS, NULL },
    { "entrySetValue", (PyCFunction) widgetEntrySetValue, METH_VARARGS, NULL },
    { "listboxAddItem", (PyCFunction) widgetListboxAdd, METH_VARARGS, NULL },
    { "listboxInsertItem", (PyCFunction) widgetListboxIns, METH_VARARGS, NULL },
    { "listboxGetCurrent", (PyCFunction) widgetListboxGet, METH_VARARGS, NULL },
    { "listboxSetCurrent", (PyCFunction) widgetListboxSet, METH_VARARGS, NULL },
    { "listboxSetWidth", (PyCFunction) widgetListboxSetW, METH_VARARGS, NULL },
    { "listboxDeleteItem", (PyCFunction) widgetListboxDel, METH_VARARGS, NULL },
    { "listboxClear", (PyCFunction) widgetListboxClear, METH_VARARGS, NULL },
    { "scaleSet", (PyCFunction) scaleSet, METH_VARARGS, NULL },
    { "checkboxtreeAddItem", (PyCFunction) widgetCheckboxTreeAddItem,
      METH_VARARGS, NULL },
    { "checkboxtreeGetCurrent", (PyCFunction) widgetCheckboxTreeGetCur,
      METH_VARARGS, NULL },
    { "checkboxtreeGetEntryValue", (PyCFunction) widgetCheckboxTreeGetEntryValue,
      METH_VARARGS, NULL },
    { "checkboxtreeSetEntry", (PyCFunction) widgetCheckboxTreeSetEntry,
      METH_VARARGS, NULL },
    { "checkboxtreeSetWidth", (PyCFunction) widgetCheckboxTreeSetWidth, METH_VARARGS, NULL },
    { "checkboxtreeSetCurrent", (PyCFunction) widgetCheckboxTreeSetCurrent,
      METH_VARARGS, NULL },
    { "checkboxtreeSetEntryValue", (PyCFunction) widgetCheckboxTreeSetEntryValue,
      METH_VARARGS, NULL },
    { "checkboxtreeGetSelection", (PyCFunction) widgetCheckboxTreeGetSel,
      METH_VARARGS, NULL },  
    { "entrySetFlags", (PyCFunction) widgetEntrySetFlags, METH_VARARGS, NULL },
    { "checkboxSetFlags", (PyCFunction) widgetCheckboxSetFlags, METH_VARARGS, NULL },
    { "checkboxSetValue", (PyCFunction) widgetCheckboxSetValue, METH_VARARGS, NULL },
    { NULL }
};

static PyTypeObject snackWidgetType = {
        PyObject_HEAD_INIT(&PyType_Type)
        0,                              /* ob_size */
        "snackwidget",                  /* tp_name */
        sizeof(snackWidget),            /* tp_size */
        0,                              /* tp_itemsize */
        widgetDestructor,                 /* tp_dealloc */
        0,                              /* tp_print */
        widgetGetAttr,              /* tp_getattr */
        0,                              /* tp_setattr */
        0,                              /* tp_compare */
        0,                              /* tp_repr */
        0,                              /* tp_as_number */
        0,                              /* tp_as_sequence */
        0,                          /* tp_as_mapping */
};

static snackWidget * snackWidgetNew (void) {
    snackWidget * widget;
     
    widget = PyObject_NEW(snackWidget, &snackWidgetType);

    widget->scs.cb = NULL;
    widget->scs.data = NULL;

    return widget;
}

static PyObject * initScreen(PyObject * s, PyObject * args) {
    suspend.cb = NULL;
    suspend.data = NULL;
    
    newtInit();
    newtCls();

    Py_INCREF(Py_None);
    return Py_None;
}

static PyObject * finishScreen(PyObject * s, PyObject * args) {
    Py_XDECREF (suspend.cb);
    Py_XDECREF (suspend.data);
    
    newtFinished();
    Py_INCREF(Py_None);
    return Py_None;
}

static PyObject * refreshScreen(PyObject * s, PyObject * args) {
    newtRefresh();
    Py_INCREF(Py_None);
    return Py_None;
}

static PyObject * scaleWidget(PyObject * s, PyObject * args) {
    snackWidget * widget;
    int width, fullAmount;

    if (!PyArg_ParseTuple(args, "ii", &width, &fullAmount)) return NULL;

    widget = snackWidgetNew ();
    widget->co = newtScale(-1, -1, width, fullAmount);

    return (PyObject *) widget;
}

static PyObject * scaleSet(snackWidget * s, PyObject * args) {
    int amount;

    if (!PyArg_ParseTuple(args, "i", &amount)) return NULL;

    newtScaleSet(s->co, amount);

    Py_INCREF(Py_None);
    return Py_None;
}

static PyObject * screenSize(PyObject * s, PyObject * args) {
    int width, height;

    if (!PyArg_ParseTuple(args, ""))
      return NULL;

    newtGetScreenSize(&width, &height);

    return Py_BuildValue("(ii)", width, height);
}

static void helpCallbackMarshall(newtComponent co, void * data) {
    PyObject * args, * result;

    args = Py_BuildValue("(O)", data);
    result = PyEval_CallObject(helpCallback.cb, args);
    Py_DECREF (args);
    Py_XDECREF(result);

    return;
}

static void suspendCallbackMarshall(void * data) {
    struct callbackStruct * scs = data;
    PyObject * args, * result;

    if (scs->data) {
      args = Py_BuildValue("(O)", scs->data);
      result = PyEval_CallObject(scs->cb, args);
      Py_DECREF (args);
    } else
      result = PyEval_CallObject(scs->cb, NULL);
    
    if (!result) {
      PyErr_Print();
      PyErr_Clear();
    }

    Py_XDECREF(result);

    return;
}

static void callbackMarshall(newtComponent co, void * data) {
    struct callbackStruct * scs = data;
    PyObject * args, * result;

    if (scs->data) {
      args = Py_BuildValue("(O)", scs->data);
      result = PyEval_CallObject(scs->cb, args);
      Py_DECREF (args);
    } else
      result = PyEval_CallObject(scs->cb, NULL);

    if (!result) {
      PyErr_Print();
      PyErr_Clear();
    }
    
    Py_XDECREF(result);

    return;
}

static PyObject * setSuspendCallback(PyObject * s, PyObject * args) {
    if (!PyArg_ParseTuple(args, "O|O", &suspend.cb, &suspend.data))
      return NULL;

    Py_INCREF (suspend.cb);
    Py_XINCREF (suspend.data);    
    
    newtSetSuspendCallback(suspendCallbackMarshall, &suspend);

    Py_INCREF(Py_None);
    return Py_None;
}

static PyObject * setHelpCallback(PyObject * s, PyObject * args) {
    if (!PyArg_ParseTuple(args, "O", &helpCallback.cb))
      return NULL;

    /*if (helpCallback.cb) {
      Py_DECREF (helpCallback.cb);
    }*/

    Py_INCREF (helpCallback.cb);

    newtSetHelpCallback(helpCallbackMarshall);

    Py_INCREF(Py_None);
    return Py_None;
}

static PyObject * drawRootText(PyObject * s, PyObject * args) {
    int left, top;
    char * text;

    if (!PyArg_ParseTuple(args, "iis", &left, &top, &text))
      return NULL;

    newtDrawRootText(left, top, text);

    Py_INCREF(Py_None);
    return Py_None;
}

static PyObject * doSuspend(PyObject * s, PyObject * args) {
    newtSuspend();

    Py_INCREF(Py_None);
    return Py_None;
}

static PyObject * doResume(PyObject * s, PyObject * args) {
    newtResume();

    Py_INCREF(Py_None);
    return Py_None;
}

static PyObject * popHelpLine(PyObject * s, PyObject * args) {
    newtPopHelpLine();
    Py_INCREF(Py_None);
    return Py_None;
}

static PyObject * pushHelpLine(PyObject * s, PyObject * args) {
    char * text;

    if (!PyArg_ParseTuple(args, "s", &text))
      return NULL;

    if (!strcmp(text, "*default*"))
      newtPushHelpLine(NULL);
    else
      newtPushHelpLine(text);

    Py_INCREF(Py_None);
    return Py_None;
}

static PyObject * reflowText(PyObject * s, PyObject * args) {
    char * text, * new;
    int width, minus = 5, plus = 5;
    int realWidth, realHeight;
    PyObject * tuple;

    if (!PyArg_ParseTuple(args, "si|ii", &text, &width, &minus, &plus))
      return NULL;

    new = newtReflowText(text, width, minus, plus, &realWidth, &realHeight);

    tuple = Py_BuildValue("(sii)", new, realWidth, realHeight);
    free(new);

    return tuple;
}

static PyObject * centeredWindow(PyObject * s, PyObject * args) {
    int width, height;
    char * title;

    if (!PyArg_ParseTuple(args, "iis", &width, &height, &title))
      return NULL;

    newtCenteredWindow(width, height, title);

    Py_INCREF(Py_None);
    return Py_None;
}

static PyObject * gridWrappedWindow(PyObject * s, PyObject * args) {
    snackGrid * grid;
    char * title;
    int x = -1, y = -1;

    if (!PyArg_ParseTuple(args, "O!s|ii", &snackGridType, &grid, &title, 
                    &x, &y))
      return NULL;

    if (y == -1)
      newtGridWrappedWindow(grid->grid, title);
    else
      newtGridWrappedWindowAt(grid->grid, title, x, y);

    Py_INCREF(Py_None);
    return Py_None;
}

static PyObject * openWindow(PyObject * s, PyObject * args) {
    int left, top, width, height;
    char * title;

    if (!PyArg_ParseTuple(args, "iiiis", &left, &top, &width, &height, &title))
      return NULL;

    newtOpenWindow(left, top, width, height, title);

    Py_INCREF(Py_None);
    return Py_None;
}

static PyObject * popWindow(PyObject * s, PyObject * args) {
    newtPopWindow();
    Py_INCREF(Py_None);
    return Py_None;
}

static PyObject * messageWindow(PyObject * s, PyObject * args) {
    char * title, * text;
    char * okbutton = "Ok";

    if (!PyArg_ParseTuple(args, "ss|s", &title, &text, &okbutton)) 
      return NULL;

    newtWinMessage(title, okbutton, text);

    Py_INCREF(Py_None);
    return Py_None;
}

static PyObject * choiceWindow(PyObject * s, PyObject * args) {
    char * title, * text;
    char * okbutton = "Ok";
    char * cancelbutton = "Cancel";
    int rc;

    if (!PyArg_ParseTuple(args, "ss|ss", &title, &text, &okbutton, 
                    &cancelbutton)) 
      return NULL;

    rc = newtWinChoice(title, okbutton, cancelbutton, text);

    return Py_BuildValue("i", rc);
}

static PyObject * ternaryWindow(PyObject * s, PyObject * args) {
    char * title, * text, * button1, * button2, * button3;
    int rc;

    if (!PyArg_ParseTuple(args, "sssss", &title, &text, &button1, &button2, 
                    &button3)) 
      return NULL;

    rc = newtWinTernary(title, button1, button2, button3, text);

    return Py_BuildValue("i", rc);
}

static snackWidget * buttonWidget(PyObject * s, PyObject * args) {
    snackWidget * widget;
    char * label;

    if (!PyArg_ParseTuple(args, "s", &label)) return NULL;

    widget = snackWidgetNew ();
    widget->co = newtButton(-1, -1, label);

    return widget;
}

static snackWidget * compactbuttonWidget(PyObject * s, PyObject * args) {
    snackWidget * widget;
    char * label;

    if (!PyArg_ParseTuple(args, "s", &label)) return NULL;

    widget = snackWidgetNew ();
    widget->co = newtCompactButton(-1, -1, label);

    return widget;
}

static snackWidget * labelWidget(PyObject * s, PyObject * args) {
    char * label;
    snackWidget * widget;

    if (!PyArg_ParseTuple(args, "s", &label)) return NULL;

    widget = snackWidgetNew ();
    widget->co = newtLabel(-1, -1, label);

    return widget;
}

static PyObject * widgetLabelText(snackWidget * s, PyObject * args) {
    char * label;

    if (!PyArg_ParseTuple(args, "s", &label)) return NULL;

    newtLabelSetText(s->co, label);

    Py_INCREF(Py_None);
    return Py_None;
}

static PyObject * widgetTextboxText(snackWidget * s, PyObject * args) {
    char * text;

    if (!PyArg_ParseTuple(args, "s", &text)) return NULL;

    newtTextboxSetText(s->co, text);

    Py_INCREF(Py_None);
    return Py_None;
}

static snackWidget * listboxWidget(PyObject * s, PyObject * args) {
    snackWidget * widget;
    int height;
    int doScroll = 0, returnExit = 0, showCursor = 0 ;

    if (!PyArg_ParseTuple(args, "i|iii", &height, &doScroll, &returnExit, &showCursor))
      return NULL;

    widget = snackWidgetNew ();
    widget->co = newtListbox(-1, -1, height,
                       (doScroll ? NEWT_FLAG_SCROLL : 0) |
                       (returnExit ? NEWT_FLAG_RETURNEXIT : 0) |
                       (showCursor ? NEWT_FLAG_SHOWCURSOR : 0)
                       );
    widget->anint = 1;
    
    return widget;
}

static snackWidget * textWidget(PyObject * s, PyObject * args) {
    char * text;
    int width, height;
    int scrollBar = 0;
    int wrap = 0;
    snackWidget * widget;
    
    if (!PyArg_ParseTuple(args, "iis|ii", &width, &height, &text, &scrollBar, &wrap))
      return NULL;

    widget = snackWidgetNew ();
    widget->co = newtTextbox(-1, -1, width, height,
                        (scrollBar ? NEWT_FLAG_SCROLL : 0) |
                          (wrap ? NEWT_FLAG_WRAP : 0));
    newtTextboxSetText(widget->co, text);
    
    return widget;
}

static snackWidget * radioButtonWidget(PyObject * s, PyObject * args) {
    snackWidget * widget, * group;
    char * text;
    int isOn;

    if (!PyArg_ParseTuple(args, "sOi", &text, &group, &isOn)) 
            return NULL;

    widget = snackWidgetNew ();

    if ((PyObject *) group == Py_None)
      widget->co = newtRadiobutton(-1, -1, text, isOn, NULL);
    else
      widget->co = newtRadiobutton(-1, -1, text, isOn, group->co);

    return widget;
}

static snackWidget * checkboxWidget(PyObject * s, PyObject * args) {
    snackWidget * widget;
    char * text;
    int isOn;

    if (!PyArg_ParseTuple(args, "si", &text, &isOn)) return NULL;

    widget = snackWidgetNew ();
    widget->co = newtCheckbox(-1, -1, text, isOn ? '*' : ' ', NULL, 
                        &widget->achar);

    return widget;
}

static PyObject * widgetCheckboxSetFlags(snackWidget * s, PyObject * args) {
    int flag, sense;

    if (!PyArg_ParseTuple(args, "ii", &flag, &sense)) return NULL;

    newtCheckboxSetFlags(s->co, flag, sense);
    
    Py_INCREF(Py_None);
    return Py_None;
}

static PyObject * widgetCheckboxSetValue(snackWidget * s, PyObject * args) {
    char *value;

    if (!PyArg_ParseTuple(args, "s", &value)) return NULL;

    newtCheckboxSetValue(s->co, *value);
    
    Py_INCREF(Py_None);
    return Py_None;
}

static snackWidget * entryWidget(PyObject * s, PyObject * args) {
    snackWidget * widget;
    int width;
    char * initial;
    int isHidden, isScrolled, returnExit, isPassword;

    if (!PyArg_ParseTuple(args, "isiiii", &width, &initial,
                    &isHidden, &isPassword, &isScrolled, &returnExit)) return NULL;

    widget = snackWidgetNew ();
    widget->co = newtEntry(-1, -1, initial, width,
                           (const char **) &widget->apointer, 
                     (isHidden ? NEWT_FLAG_HIDDEN : 0) |
                     (isPassword ? NEWT_FLAG_PASSWORD : 0) |
                     (returnExit ? NEWT_FLAG_RETURNEXIT : 0) |
                     (isScrolled ? NEWT_FLAG_SCROLL : 0));

    return widget;
}

static snackForm * formCreate(PyObject * s, PyObject * args) {
    snackForm * form;
    PyObject * help = Py_None;

    if (!PyArg_ParseTuple(args, "|O", &help)) return NULL;

    if (help == Py_None)
      help = NULL;

    form = PyObject_NEW(snackForm, &snackFormType);
    form->fo = newtForm(NULL, help, 0);

    return form;
}

static snackGrid * gridCreate(PyObject * s, PyObject * args) {
    int rows, cols;
    snackGrid * grid;

    if (!PyArg_ParseTuple(args, "ii", &cols, &rows)) return NULL;

    grid = PyObject_NEW(snackGrid, &snackGridType);
    grid->grid = newtCreateGrid(cols, rows);

    return grid;
}

static PyObject * gridGetAttr(PyObject * s, char * name) {
    return Py_FindMethod(gridMethods, s, name);
}

static PyObject * gridPlace(snackGrid * grid, PyObject * args) {
    int x, y;

    if (!PyArg_ParseTuple(args, "ii", &x, &y)) return NULL;

    newtGridPlace(grid->grid, x, y);

    Py_INCREF(Py_None);
    return Py_None;
}

static PyObject * gridSetField(snackGrid * grid, PyObject * args) {
    snackWidget * w;
    snackGrid * g;
    int x, y;
    int pLeft = 0, pTop = 0, pRight = 0, pBottom = 0;
    int anchorFlags = 0, growFlags = 0;

    if (!PyArg_ParseTuple(args, "iiO|(iiii)ii", &x, &y, 
                        &w, &pLeft, &pTop, &pRight, &pBottom,
                        &anchorFlags, &growFlags)) 
      return NULL;

    if (w->ob_type == &snackWidgetType) {
      newtGridSetField(grid->grid, x, y, NEWT_GRID_COMPONENT,
                   w->co, pLeft, pTop, pRight, pBottom, anchorFlags, 
                   growFlags);
    } else {
      g = (snackGrid *) w;
      newtGridSetField(grid->grid, x, y, NEWT_GRID_SUBGRID,
                   g->grid, pLeft, pTop, pRight, pBottom, anchorFlags, 
                   growFlags);
    }

    Py_INCREF(Py_None);
    return Py_None;
}

static PyObject * formGetAttr(PyObject * s, char * name) {
    return Py_FindMethod(formMethods, s, name);
}

static PyObject * formDraw(snackForm * s, PyObject * args) {
    newtDrawForm(s->fo);

    Py_INCREF(Py_None);
    return Py_None;
}

static PyObject * formAdd(snackForm * s, PyObject * args) {
    snackWidget * w;
    int size = PyTuple_Size(args), i;
    
    if (!size) {
      /* this is a hack, I should give an error directly */
      if (!PyArg_ParseTuple(args, "O!", &snackWidgetType, &w)) 
          return NULL;
    }

    for (i = 0; i < size; i++) {
      w = (snackWidget *) PyTuple_GET_ITEM(args, i);
      newtFormAddComponent(s->fo, w->co);
    }

    Py_INCREF(Py_None);
    return Py_None;
}

static PyObject * formRun(snackForm * s, PyObject * args) {
    struct newtExitStruct result;

    newtFormRun(s->fo, &result);

    if (result.reason == NEWT_EXIT_HOTKEY)
      return Py_BuildValue("(si)", "hotkey", result.u.key);
    else if (result.reason == NEWT_EXIT_TIMER)
      return Py_BuildValue("(si)", "timer", 0);
    else if (result.reason == NEWT_EXIT_FDREADY)
      return Py_BuildValue("(si)", "fdready", result.u.watch);
    else
      return Py_BuildValue("(si)", "widget", result.u.co);
}

static PyObject * formHotKey(snackForm * s, PyObject * args) {
    int key;

    if (!PyArg_ParseTuple(args, "i", &key))
      return NULL;

    newtFormAddHotKey(s->fo, key);

    Py_INCREF(Py_None);
    return Py_None;
}

static PyObject * formSetTimer(snackForm * form, PyObject * args) {
    int millisecs;

    if (!PyArg_ParseTuple(args, "i", &millisecs))
      return NULL;

    newtFormSetTimer(form->fo, millisecs);

    Py_INCREF(Py_None);
    return Py_None;
}

static PyObject * formWatchFD(snackForm * form, PyObject * args) {
    int fd, fdflags;

    if (!PyArg_ParseTuple(args, "ii", &fd, &fdflags))
      return NULL;

    newtFormWatchFd(form->fo, fd, fdflags);

    Py_INCREF(Py_None);
    return Py_None;
}

static PyObject * formSetCurrent(snackForm * form, PyObject * args) {
    snackWidget * w;

    if (!PyArg_ParseTuple(args, "O", &w))
      return NULL;

    newtFormSetCurrent(form->fo, w->co);

    Py_INCREF(Py_None);
    return Py_None;
}

static PyObject * widgetGetAttr(PyObject * s, char * name) {
    snackWidget * w = (snackWidget *) s;

    if (!strcmp(name, "key")) {
      return Py_BuildValue("i", w->co);
    } else if (!strcmp(name, "entryValue")) {
      return Py_BuildValue("s", w->apointer);
    } else if (!strcmp(name, "checkboxValue")) {
      return Py_BuildValue("i", w->achar == ' ' ? 0 : 1);
    } else if (!strcmp(name, "radioValue")) {
      return Py_BuildValue("i", newtRadioGetCurrent(w->co));
    }

    return Py_FindMethod(widgetMethods, s, name);
}

static void widgetDestructor(PyObject * o) {
    snackWidget * s = (snackWidget *) o;
    
    Py_XDECREF (s->scs.cb);
    Py_XDECREF (s->scs.data);

    PyMem_DEL(o);
}

static PyObject * widgetAddCallback(snackWidget * s, PyObject * args) {
    s->scs.cb = NULL;
    s->scs.data = NULL;
    
    if (!PyArg_ParseTuple(args, "O|O", &s->scs.cb, &s->scs.data))
      return NULL;

    Py_INCREF (s->scs.cb);
    Py_XINCREF (s->scs.data);
    
    newtComponentAddCallback(s->co, callbackMarshall, &s->scs);

    Py_INCREF(Py_None);
    return Py_None;
}

static PyObject * widgetEntrySetValue(snackWidget * s, PyObject * args) {
    char * val;

    if (!PyArg_ParseTuple(args, "s", &val))
      return NULL;

    newtEntrySet(s->co, val, 1);

    Py_INCREF(Py_None);
    return Py_None;
}

static PyObject * widgetEntrySetFlags(snackWidget * s, PyObject * args) {
    int flag, sense;

    if (!PyArg_ParseTuple(args, "ii", &flag, &sense)) return NULL;

    newtEntrySetFlags(s->co, flag, sense);
    
    Py_INCREF(Py_None);
    return Py_None;
}


static PyObject * widgetListboxAdd(snackWidget * s, PyObject * args) {
    char * text;
    
    if (!PyArg_ParseTuple(args, "s", &text))
      return NULL;

    newtListboxAddEntry(s->co, text, I2P(s->anint));

    return PyInt_FromLong(s->anint++);
}

static PyObject * widgetListboxIns(snackWidget * s, PyObject * args) {
    char * text;
    int key;
    
    if (!PyArg_ParseTuple(args, "si", &text, &key))
      return NULL;

    newtListboxInsertEntry(s->co, text, I2P(s->anint), I2P(key));

    return PyInt_FromLong(s->anint++);
}

static PyObject * widgetListboxDel(snackWidget * s, PyObject * args) {
    int key;
    
    if (!PyArg_ParseTuple(args, "i", &key))
      return NULL;

    newtListboxDeleteEntry(s->co, I2P(key));

    Py_INCREF(Py_None);
    return Py_None;
}

static PyObject * widgetListboxGet(snackWidget * s, PyObject * args) {
    if (!PyArg_ParseTuple(args, ""))
      return NULL;

    return PyInt_FromLong((long) newtListboxGetCurrent(s->co));
}

static PyObject * widgetListboxSet(snackWidget * s, PyObject * args) {
    int index;
    
    if (!PyArg_ParseTuple(args, "i", &index))
      return NULL;

    newtListboxSetCurrentByKey(s->co, I2P(index));

    Py_INCREF(Py_None);
    return Py_None;
}

static PyObject * widgetListboxSetW(snackWidget * s, PyObject * args) {
    int width;

    if (!PyArg_ParseTuple(args, "i", &width))
      return NULL;

    newtListboxSetWidth(s->co, width);

    Py_INCREF(Py_None);
    return Py_None;
}

static PyObject * widgetListboxClear(snackWidget * s, PyObject * args) {
  if (!PyArg_ParseTuple(args, ""))
    return NULL;

  newtListboxClear(s->co);

  Py_INCREF(Py_None);
  return Py_None;
}

static void emptyDestructor(PyObject * s) {
}

static snackWidget * checkboxTreeWidget(PyObject * s, PyObject * args, PyObject * kwargs) {
    int height;
    int scrollBar = 0;
    int hide_checkbox = 0;
    int unselectable = 0;
    int flags;
    snackWidget * widget;
    const char *kw[] = {"height", "scrollbar", "hide_checkbox", "unselectable", NULL};
    
    if (!PyArg_ParseTupleAndKeywords(args, kwargs, "i|iii", (char **) kw,
            &height, &scrollBar, &hide_checkbox, &unselectable))
      return NULL;

    flags = (scrollBar ? NEWT_FLAG_SCROLL : 0) |
      (hide_checkbox ? NEWT_CHECKBOXTREE_HIDE_BOX : 0) |    
      (unselectable ? NEWT_CHECKBOXTREE_UNSELECTABLE : 0);

    widget = snackWidgetNew ();
    widget->co = newtCheckboxTree(-1, -1, height, flags);

    widget->anint = 1;

    return widget;
}

static PyObject * widgetCheckboxTreeAddItem(snackWidget * s, PyObject * args) {
    char * text;
    int selected = 0;
    PyObject * pathList, * o;
    int len;
    int * path;
    int i;

    if (!PyArg_ParseTuple(args, "sOi", &text, &pathList, &selected))
      return NULL;

    len = PyTuple_Size(pathList);
    path = alloca(sizeof(*path) * (len + 1));
    for (i = 0; i < len; i++) {
        o = PyTuple_GetItem(pathList, i);
      path[i] = PyInt_AsLong(o);
    }
    path[len] = NEWT_ARG_LAST;

    newtCheckboxTreeAddArray(s->co, text, I2P(s->anint),
                       selected ? NEWT_FLAG_SELECTED : 0, path);

    return PyInt_FromLong(s->anint++);
}

static PyObject * widgetCheckboxTreeGetCur(snackWidget * s, PyObject * args) {
    if (!PyArg_ParseTuple(args, ""))
      return NULL;

    return PyInt_FromLong((long)newtCheckboxTreeGetCurrent(s->co));
}

static PyObject * widgetCheckboxTreeSetEntry(snackWidget * s, PyObject * args) {
    int data;
    char *text;

    if (!PyArg_ParseTuple(args, "is", &data, &text)) return NULL;

    newtCheckboxTreeSetEntry(s->co, I2P(data), text);

    Py_INCREF(Py_None);
    return Py_None;
}

static PyObject * widgetCheckboxTreeSetWidth(snackWidget * s, PyObject * args) {
    int width;

    if (!PyArg_ParseTuple(args, "i", &width))
      return NULL;

    newtCheckboxTreeSetWidth(s->co, width);

    Py_INCREF(Py_None);
    return Py_None;
}

static PyObject * widgetCheckboxTreeSetCurrent(snackWidget * s, PyObject * args) {
    int data;

    if (!PyArg_ParseTuple(args, "i", &data)) return NULL;

    newtCheckboxTreeSetCurrent(s->co, I2P(data));

    Py_INCREF(Py_None);
    return Py_None;
}

static PyObject * widgetCheckboxTreeSetEntryValue(snackWidget * s, PyObject * args) {
    int data;
    int isOn = 1;

    if (!PyArg_ParseTuple(args, "i|i", &data, &isOn)) return NULL;

    newtCheckboxTreeSetEntryValue(s->co, I2P(data),
                          isOn ? NEWT_CHECKBOXTREE_SELECTED :
                               NEWT_CHECKBOXTREE_UNSELECTED);

    Py_INCREF(Py_None);
    return Py_None;
}

static PyObject * widgetCheckboxTreeGetEntryValue(snackWidget * s, PyObject * args) {
    int data;
    int isOn = 0;
    int isBranch = 0;
    char selection;

    if (!PyArg_ParseTuple(args, "i", &data)) return NULL;

    selection = newtCheckboxTreeGetEntryValue(s->co, I2P(data));

    if (selection == -1) return NULL;

    switch (selection) {
    case NEWT_CHECKBOXTREE_EXPANDED:
      isOn = 1;
    case NEWT_CHECKBOXTREE_COLLAPSED:
      isBranch = 1;
      break;
    case NEWT_CHECKBOXTREE_UNSELECTED:
      break;
    default:
      isOn = 1;
      break;
    }    
    return Py_BuildValue("(ii)", isBranch, isOn);
}

static PyObject * widgetCheckboxTreeGetSel(snackWidget * s,
                                    PyObject * args) {
    void ** selection;
    int numselected;
    int i;
    PyObject * sel;

    if (!PyArg_ParseTuple(args, ""))
      return NULL;

    selection = (void **) newtCheckboxTreeGetSelection(s->co, &numselected);

    sel = PyList_New(0);
    
    if (!selection) {
      return sel;
    }

    sel = PyList_New(0);
    for (i = 0; i < numselected; i++) {
      PyList_Append(sel, PyInt_FromLong((long) selection[i]));
    }
    free(selection);

    return sel;
}

static PyObject * pywstrlen(PyObject * s, PyObject * args)
{
    char *str;
    int len = -1;
    
    if (!PyArg_ParseTuple(args, "s|i", &str, &len)) return NULL;

    return PyInt_FromLong(wstrlen(str, len));
}

void init_snack(void) {
    PyObject * d, * m;

    m = Py_InitModule("_snack", snackModuleMethods);
    d = PyModule_GetDict(m);

    PyDict_SetItemString(d, "ANCHOR_LEFT", PyInt_FromLong(NEWT_ANCHOR_LEFT));
    PyDict_SetItemString(d, "ANCHOR_TOP", PyInt_FromLong(NEWT_ANCHOR_TOP));
    PyDict_SetItemString(d, "ANCHOR_RIGHT", PyInt_FromLong(NEWT_ANCHOR_RIGHT));
    PyDict_SetItemString(d, "ANCHOR_BOTTOM", 
                   PyInt_FromLong(NEWT_ANCHOR_BOTTOM));
    PyDict_SetItemString(d, "GRID_GROWX", PyInt_FromLong(NEWT_GRID_FLAG_GROWX));
    PyDict_SetItemString(d, "GRID_GROWY", PyInt_FromLong(NEWT_GRID_FLAG_GROWY));

    PyDict_SetItemString(d, "FD_READ", PyInt_FromLong(NEWT_FD_READ));
    PyDict_SetItemString(d, "FD_WRITE", PyInt_FromLong(NEWT_FD_WRITE));
    PyDict_SetItemString(d, "FD_EXCEPT", PyInt_FromLong(NEWT_FD_EXCEPT));

    PyDict_SetItemString(d, "FORM_EXIT_HOTKEY", PyString_FromString("hotkey"));
    PyDict_SetItemString(d, "FORM_EXIT_WIDGET", PyString_FromString("widget"));
    PyDict_SetItemString(d, "FORM_EXIT_TIMER", PyString_FromString("timer"));
    PyDict_SetItemString(d, "FORM_EXIT_FDREADY", PyString_FromString("fdready"));

    PyDict_SetItemString(d, "KEY_F1", PyInt_FromLong(NEWT_KEY_F1));
    PyDict_SetItemString(d, "KEY_F2", PyInt_FromLong(NEWT_KEY_F2));
    PyDict_SetItemString(d, "KEY_F3", PyInt_FromLong(NEWT_KEY_F3));
    PyDict_SetItemString(d, "KEY_F4", PyInt_FromLong(NEWT_KEY_F4));
    PyDict_SetItemString(d, "KEY_F5", PyInt_FromLong(NEWT_KEY_F5));
    PyDict_SetItemString(d, "KEY_F6", PyInt_FromLong(NEWT_KEY_F6));
    PyDict_SetItemString(d, "KEY_F7", PyInt_FromLong(NEWT_KEY_F7));
    PyDict_SetItemString(d, "KEY_F8", PyInt_FromLong(NEWT_KEY_F8));
    PyDict_SetItemString(d, "KEY_F9", PyInt_FromLong(NEWT_KEY_F9));
    PyDict_SetItemString(d, "KEY_F10", PyInt_FromLong(NEWT_KEY_F10));
    PyDict_SetItemString(d, "KEY_F11", PyInt_FromLong(NEWT_KEY_F11));
    PyDict_SetItemString(d, "KEY_F12", PyInt_FromLong(NEWT_KEY_F12));

    PyDict_SetItemString(d, "FLAG_DISABLED", PyInt_FromLong(NEWT_FLAG_DISABLED));
    PyDict_SetItemString(d, "FLAGS_SET", PyInt_FromLong(NEWT_FLAGS_SET));
    PyDict_SetItemString(d, "FLAGS_RESET", PyInt_FromLong(NEWT_FLAGS_RESET));
    PyDict_SetItemString(d, "FLAGS_TOGGLE", PyInt_FromLong(NEWT_FLAGS_TOGGLE));
}

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