/****************************************************************************
- * Copyright (c) 1998-2012,2013 Free Software Foundation, Inc. *
+ * Copyright (c) 1998-2014,2015 Free Software Foundation, Inc. *
* *
* Permission is hereby granted, free of charge, to any person obtaining a *
* copy of this software and associated documentation files (the *
#include "form.priv.h"
-MODULE_ID("$Id: frm_driver.c,v 1.103 2013/03/09 22:48:47 tom Exp $")
+MODULE_ID("$Id: frm_driver.c,v 1.117 2015/11/28 20:39:09 tom Exp $")
/*----------------------------------------------------------------------------
This is the core module of the form library. It contains the majority
instead of a derived window because it contains invisible parts.
This is true for non-public fields and for scrollable fields. */
#define Has_Invisible_Parts(field) \
- (!((unsigned)(field)->opts & O_PUBLIC) || \
+ (!(Field_Has_Option(field, O_PUBLIC)) || \
Is_Scroll_Field(field))
/* Logic to decide whether or not a field needs justification */
#define Justification_Allowed(field) \
(((field)->just != NO_JUSTIFICATION) && \
(Single_Line_Field(field)) && \
- (((field)->dcols == (field)->cols) && \
- ((unsigned)(field)->opts & O_STATIC)))
+ ((Field_Has_Option(field, O_STATIC) && \
+ ((field)->dcols == (field)->cols)) || \
+ Field_Has_Option(field, O_DYNAMIC_JUSTIFY)))
/* Logic to determine whether or not a dynamic field may still grow */
#define Growable(field) ((field)->status & _MAY_GROW)
/* Macro to set the attributes for a fields window */
#define Set_Field_Window_Attributes(field,win) \
-( wbkgdset((win),(chtype)((field)->pad | (field)->back)), \
+( wbkgdset((win),(chtype)((chtype)((field)->pad) | (field)->back)), \
(void) wattrset((win), (int)(field)->fore) )
/* Logic to decide whether or not a field really appears on the form */
#define Field_Really_Appears(field) \
((field->form) &&\
(field->form->status & _POSTED) &&\
- ((unsigned)field->opts & O_VISIBLE) &&\
+ (Field_Has_Option(field, O_VISIBLE)) &&\
(field->page == field->form->curpage))
/* Logic to determine whether or not we are on the first position in the
field = form->current;
formwin = Get_Form_Window(form);
- if ((unsigned)field->opts & O_PUBLIC)
+ if (Field_Has_Option(field, O_PUBLIC))
{
if (Is_Scroll_Field(field))
{
int len;
int col = 0;
- bp = Get_Start_Of_Data(field->buf, Buffer_Length(field));
+ bp = (Field_Has_Option(field, O_NO_LEFT_STRIP)
+ ? field->buf
+ : Get_Start_Of_Data(field->buf, Buffer_Length(field)));
len = (int)(After_End_Of_Data(field->buf, Buffer_Length(field)) - bp);
if (len > 0)
{
- assert(win && (field->drows == 1) && (field->dcols == field->cols));
+ assert(win && (field->drows == 1));
- switch (field->just)
- {
- case JUSTIFY_LEFT:
- break;
- case JUSTIFY_CENTER:
- col = (field->cols - len) / 2;
- break;
- case JUSTIFY_RIGHT:
- col = field->cols - len;
- break;
- default:
- break;
- }
+ if (field->cols - len >= 0)
+ switch (field->just)
+ {
+ case JUSTIFY_LEFT:
+ break;
+ case JUSTIFY_CENTER:
+ col = (field->cols - len) / 2;
+ break;
+ case JUSTIFY_RIGHT:
+ col = field->cols - len;
+ break;
+ default:
+ break;
+ }
wmove(win, 0, col);
myADDNSTR(win, bp, len);
FIELD_CELL *bp;
int len;
- bp = Get_Start_Of_Data(field->buf, Buffer_Length(field));
+ bp = (Field_Has_Option(field, O_NO_LEFT_STRIP)
+ ? field->buf
+ : Get_Start_Of_Data(field->buf, Buffer_Length(field)));
len = (int)(After_End_Of_Data(field->buf, Buffer_Length(field)) - bp);
if (len > 0)
return E_SYSTEM_ERROR;
else
{
- if ((unsigned)field->opts & O_VISIBLE)
+ if (Field_Has_Option(field, O_VISIBLE))
{
Set_Field_Window_Attributes(field, win);
}
if (!bEraseFlag)
{
- if ((unsigned)field->opts & O_PUBLIC)
+ if (Field_Has_Option(field, O_PUBLIC))
{
if (Justification_Allowed(field))
Perform_Justification(field, win);
form->currow = form->curcol = form->toprow = form->begincol = 0;
werase(form->w);
- if (((unsigned)field->opts & O_PUBLIC) && Justification_Allowed(field))
+ if ((Field_Has_Option(field, O_PUBLIC)) && Justification_Allowed(field))
Undo_Justification(field, form->w);
else
Buffer_To_Window(field, form->w);
werase(form->w);
wmove(form->w, form->currow, form->curcol);
- if ((unsigned)field->opts & O_PUBLIC)
+ if (Field_Has_Option(field, O_PUBLIC))
{
if (Justification_Allowed(field))
Undo_Justification(field, form->w);
!(form->status & _POSTED))
{
if ((form->w) &&
- ((unsigned)field->opts & O_VISIBLE) &&
+ (Field_Has_Option(field, O_VISIBLE)) &&
(field->form->curpage == field->page))
{
_nc_Refresh_Current_Field(form);
- if ((unsigned)field->opts & O_PUBLIC)
+ if (Field_Has_Option(field, O_PUBLIC))
{
if (field->drows > field->rows)
{
Window_To_Buffer(form, field);
werase(form->w);
Perform_Justification(field, form->w);
- wsyncup(form->w);
+ if (Field_Has_Option(field, O_DYNAMIC_JUSTIFY) &&
+ (form->w->_parent == 0))
+ {
+ copywin(form->w,
+ Get_Form_Window(form),
+ 0,
+ 0,
+ field->frow,
+ field->fcol,
+ field->frow,
+ field->cols + field->fcol - 1,
+ 0);
+ wsyncup(Get_Form_Window(form));
+ }
+ else
+ {
+ wsyncup(form->w);
+ }
}
}
}
{
res = fct(form);
if (res == E_OK)
- SetStatus(form, _NEWTOP);
+ SetStatus(form->current, _NEWTOP);
}
return (res);
}
int result = E_REQUEST_DENIED;
bool Last_Row = ((field->drows - 1) == form->currow);
- if (((unsigned)field->opts & O_WRAP) && /* wrapping wanted */
+ if ((Field_Has_Option(field, O_WRAP)) && /* wrapping wanted */
(!Single_Line_Field(field)) && /* must be multi-line */
(There_Is_No_Room_For_A_Char_In_Line(form)) && /* line is full */
(!Last_Row || Growable(field))) /* there are more lines */
{
if (typ)
{
- if ((unsigned)field->opts & O_NULLOK)
+ if (Field_Has_Option(field, O_NULLOK))
{
FIELD_CELL *bp = field->buf;
Synchronize_Buffer(form);
if ((form->status & _FCHECK_REQUIRED) ||
- (!((unsigned)field->opts & O_PASSOK)))
+ (!(Field_Has_Option(field, O_PASSOK))))
{
if (!Check_Field(form, field->type, field, (TypeArgument *)(field->arg)))
return FALSE;
do
{
field = (field == last_on_page) ? first : field + 1;
- if (((unsigned)(*field)->opts & O_VISIBLE))
+ if (Field_Has_Option(*field, O_VISIBLE))
break;
}
while (proposed != (*field));
Helper routines for the core form driver.
--------------------------------------------------------------------------*/
+# if USE_WIDEC_SUPPORT
+/*---------------------------------------------------------------------------
+| Facility : libnform
+| Function : static int Data_Entry_w(FORM * form, wchar_t c)
+|
+| Description : Enter the wide character c into at the current
+| position of the current field of the form.
+|
+| Return Values : E_OK - success
+| E_REQUEST_DENIED - driver could not process the request
+| E_SYSTEM_ERROR -
++--------------------------------------------------------------------------*/
+static int
+Data_Entry_w(FORM *form, wchar_t c)
+{
+ FIELD *field = form->current;
+ int result = E_REQUEST_DENIED;
+
+ T((T_CALLED("Data_Entry(%p,%s)"), (void *)form, _tracechtype((chtype)c)));
+ if ((Field_Has_Option(field, O_EDIT))
+#if FIX_FORM_INACTIVE_BUG
+ && (Field_Has_Option(field, O_ACTIVE))
+#endif
+ )
+ {
+ wchar_t given[2];
+ cchar_t temp_ch;
+
+ given[0] = c;
+ given[1] = 1;
+ setcchar(&temp_ch, given, 0, 0, (void *)0);
+ if ((Field_Has_Option(field, O_BLANK)) &&
+ First_Position_In_Current_Field(form) &&
+ !(form->status & _FCHECK_REQUIRED) &&
+ !(form->status & _WINDOW_MODIFIED))
+ werase(form->w);
+
+ if (form->status & _OVLMODE)
+ {
+ wadd_wch(form->w, &temp_ch);
+ }
+ else
+ /* no _OVLMODE */
+ {
+ bool There_Is_Room = Is_There_Room_For_A_Char_In_Line(form);
+
+ if (!(There_Is_Room ||
+ ((Single_Line_Field(field) && Growable(field)))))
+ RETURN(E_REQUEST_DENIED);
+
+ if (!There_Is_Room && !Field_Grown(field, 1))
+ RETURN(E_SYSTEM_ERROR);
+
+ wins_wch(form->w, &temp_ch);
+ }
+
+ if ((result = Wrapping_Not_Necessary_Or_Wrapping_Ok(form)) == E_OK)
+ {
+ bool End_Of_Field = (((field->drows - 1) == form->currow) &&
+ ((field->dcols - 1) == form->curcol));
+
+ form->status |= _WINDOW_MODIFIED;
+ if (End_Of_Field && !Growable(field) && (Field_Has_Option(field, O_AUTOSKIP)))
+ result = Inter_Field_Navigation(FN_Next_Field, form);
+ else
+ {
+ if (End_Of_Field && Growable(field) && !Field_Grown(field, 1))
+ result = E_SYSTEM_ERROR;
+ else
+ {
+ /*
+ * We have just added a byte to the form field. It may have
+ * been part of a multibyte character. If it was, the
+ * addch_used field is nonzero and we should not try to move
+ * to a new column.
+ */
+ if (WINDOW_EXT(form->w, addch_used) == 0)
+ IFN_Next_Character(form);
+
+ result = E_OK;
+ }
+ }
+ }
+ }
+ RETURN(result);
+}
+# endif
+
/*---------------------------------------------------------------------------
| Facility : libnform
| Function : static int Data_Entry(FORM * form,int c)
int result = E_REQUEST_DENIED;
T((T_CALLED("Data_Entry(%p,%s)"), (void *)form, _tracechtype((chtype)c)));
- if (((unsigned)field->opts & O_EDIT)
+ if ((Field_Has_Option(field, O_EDIT))
#if FIX_FORM_INACTIVE_BUG
- && ((unsigned)field->opts & O_ACTIVE)
+ && (Field_Has_Option(field, O_ACTIVE))
#endif
)
{
- if (((unsigned)field->opts & O_BLANK) &&
+ if ((Field_Has_Option(field, O_BLANK)) &&
First_Position_In_Current_Field(form) &&
!(form->status & _FCHECK_REQUIRED) &&
!(form->status & _WINDOW_MODIFIED))
((field->dcols - 1) == form->curcol));
SetStatus(form, _WINDOW_MODIFIED);
- if (End_Of_Field && !Growable(field) && ((unsigned)field->opts & O_AUTOSKIP))
+ if (End_Of_Field && !Growable(field) && (Field_Has_Option(field, O_AUTOSKIP)))
result = Inter_Field_Navigation(FN_Next_Field, form);
else
{
RETURN(res);
}
+# if USE_WIDEC_SUPPORT
+/*---------------------------------------------------------------------------
+| Facility : libnform
+| Function : int form_driver_w(FORM * form,int type,wchar_t c)
+|
+| Description : This is the workhorse of the forms system.
+|
+| Input is either a key code (request) or a wide char
+| returned by e.g. get_wch (). The type must be passed
+| as well,so that we are able to determine whether the char
+| is a multibyte char or a request.
+
+| If it is a request, the form driver executes
+| the request and returns the result. If it is data
+| (printable character), it enters the data into the
+| current position in the current field. If it is not
+| recognized, the form driver assumes it is an application
+| defined command and returns E_UNKNOWN_COMMAND.
+| Application defined command should be defined relative
+| to MAX_FORM_COMMAND, the maximum value of a request.
+|
+| Return Values : E_OK - success
+| E_SYSTEM_ERROR - system error
+| E_BAD_ARGUMENT - an argument is incorrect
+| E_NOT_POSTED - form is not posted
+| E_INVALID_FIELD - field contents are invalid
+| E_BAD_STATE - called from inside a hook routine
+| E_REQUEST_DENIED - request failed
+| E_NOT_CONNECTED - no fields are connected to the form
+| E_UNKNOWN_COMMAND - command not known
++--------------------------------------------------------------------------*/
+NCURSES_EXPORT(int)
+form_driver_w(FORM *form, int type, wchar_t c)
+{
+ const Binding_Info *BI = (Binding_Info *) 0;
+ int res = E_UNKNOWN_COMMAND;
+
+ T((T_CALLED("form_driver(%p,%d)"), (void *)form, (int)c));
+
+ if (!form)
+ RETURN(E_BAD_ARGUMENT);
+
+ if (!(form->field))
+ RETURN(E_NOT_CONNECTED);
+
+ assert(form->page);
+
+ if (c == (wchar_t)FIRST_ACTIVE_MAGIC)
+ {
+ form->current = _nc_First_Active_Field(form);
+ RETURN(E_OK);
+ }
+
+ assert(form->current &&
+ form->current->buf &&
+ (form->current->form == form)
+ );
+
+ if (form->status & _IN_DRIVER)
+ RETURN(E_BAD_STATE);
+
+ if (!(form->status & _POSTED))
+ RETURN(E_NOT_POSTED);
+
+ /* check if this is a keycode or a (wide) char */
+ if (type == KEY_CODE_YES)
+ {
+ if ((c >= MIN_FORM_COMMAND && c <= MAX_FORM_COMMAND) &&
+ ((bindings[c - MIN_FORM_COMMAND].keycode & Key_Mask) == c))
+ BI = &(bindings[c - MIN_FORM_COMMAND]);
+ }
+
+ if (BI)
+ {
+ typedef int (*Generic_Method) (int (*const) (FORM *), FORM *);
+ static const Generic_Method Generic_Methods[] =
+ {
+ Page_Navigation, /* overloaded to call field&form hooks */
+ Inter_Field_Navigation, /* overloaded to call field hooks */
+ NULL, /* Intra-Field is generic */
+ Vertical_Scrolling, /* Overloaded to check multi-line */
+ Horizontal_Scrolling, /* Overloaded to check single-line */
+ Field_Editing, /* Overloaded to mark modification */
+ NULL, /* Edit Mode is generic */
+ NULL, /* Field Validation is generic */
+ NULL /* Choice Request is generic */
+ };
+ size_t nMethods = (sizeof(Generic_Methods) / sizeof(Generic_Methods[0]));
+ size_t method = (size_t) (BI->keycode >> ID_Shft) & 0xffff; /* see ID_Mask */
+
+ if ((method >= nMethods) || !(BI->cmd))
+ res = E_SYSTEM_ERROR;
+ else
+ {
+ Generic_Method fct = Generic_Methods[method];
+
+ if (fct)
+ res = fct(BI->cmd, form);
+ else
+ res = (BI->cmd) (form);
+ }
+ }
+#ifdef NCURSES_MOUSE_VERSION
+ else if (KEY_MOUSE == c)
+ {
+ MEVENT event;
+ WINDOW *win = form->win ? form->win : StdScreen(Get_Form_Screen(form));
+ WINDOW *sub = form->sub ? form->sub : win;
+
+ getmouse(&event);
+ if ((event.bstate & (BUTTON1_CLICKED |
+ BUTTON1_DOUBLE_CLICKED |
+ BUTTON1_TRIPLE_CLICKED))
+ && wenclose(win, event.y, event.x))
+ { /* we react only if the click was in the userwin, that means
+ * inside the form display area or at the decoration window.
+ */
+ int ry = event.y, rx = event.x; /* screen coordinates */
+
+ res = E_REQUEST_DENIED;
+ if (mouse_trafo(&ry, &rx, FALSE))
+ { /* rx, ry are now "curses" coordinates */
+ if (ry < sub->_begy)
+ { /* we clicked above the display region; this is
+ * interpreted as "scroll up" request
+ */
+ if (event.bstate & BUTTON1_CLICKED)
+ res = form_driver(form, REQ_PREV_FIELD);
+ else if (event.bstate & BUTTON1_DOUBLE_CLICKED)
+ res = form_driver(form, REQ_PREV_PAGE);
+ else if (event.bstate & BUTTON1_TRIPLE_CLICKED)
+ res = form_driver(form, REQ_FIRST_FIELD);
+ }
+ else if (ry > sub->_begy + sub->_maxy)
+ { /* we clicked below the display region; this is
+ * interpreted as "scroll down" request
+ */
+ if (event.bstate & BUTTON1_CLICKED)
+ res = form_driver(form, REQ_NEXT_FIELD);
+ else if (event.bstate & BUTTON1_DOUBLE_CLICKED)
+ res = form_driver(form, REQ_NEXT_PAGE);
+ else if (event.bstate & BUTTON1_TRIPLE_CLICKED)
+ res = form_driver(form, REQ_LAST_FIELD);
+ }
+ else if (wenclose(sub, event.y, event.x))
+ { /* Inside the area we try to find the hit item */
+ int i;
+
+ ry = event.y;
+ rx = event.x;
+ if (wmouse_trafo(sub, &ry, &rx, FALSE))
+ {
+ int min_field = form->page[form->curpage].pmin;
+ int max_field = form->page[form->curpage].pmax;
+
+ for (i = min_field; i <= max_field; ++i)
+ {
+ FIELD *field = form->field[i];
+
+ if (Field_Is_Selectable(field)
+ && Field_encloses(field, ry, rx) == E_OK)
+ {
+ res = _nc_Set_Current_Field(form, field);
+ if (res == E_OK)
+ res = _nc_Position_Form_Cursor(form);
+ if (res == E_OK
+ && (event.bstate & BUTTON1_DOUBLE_CLICKED))
+ res = E_UNKNOWN_COMMAND;
+ break;
+ }
+ }
+ }
+ }
+ }
+ }
+ else
+ res = E_REQUEST_DENIED;
+ }
+#endif /* NCURSES_MOUSE_VERSION */
+ else if (type == OK)
+ {
+ res = Data_Entry_w(form, c);
+ }
+
+ _nc_Refresh_Current_Field(form);
+ RETURN(res);
+}
+# endif /* USE_WIDEC_SUPPORT */
+
/*----------------------------------------------------------------------------
Field-Buffer manipulation routines.
The effects of setting a buffer are tightly coupled to the core of the form
{
FIELD_CELL *p;
int res = E_OK;
- unsigned int i;
- unsigned int len;
+ int i;
+ int len;
#if USE_WIDEC_SUPPORT
FIELD_CELL *widevalue = 0;
if (!field || !value || ((buffer < 0) || (buffer > field->nbuf)))
RETURN(E_BAD_ARGUMENT);
- len = (unsigned)Buffer_Length(field);
+ len = Buffer_Length(field);
if (Growable(field))
{
/* for a growable field we must assume zero terminated strings, because
somehow we have to detect the length of what should be copied.
*/
- unsigned vlen = (unsigned)strlen(value);
+ int vlen = (int)strlen(value);
if (vlen > len)
{
delwin(field->working);
field->working = newpad(1, Buffer_Length(field) + 1);
}
- len = (unsigned)Buffer_Length(field);
+ len = Buffer_Length(field);
wclear(field->working);
(void)mvwaddstr(field->working, 0, 0, value);
}
else
{
- for (i = 0; i < (unsigned)field->drows; ++i)
+ for (i = 0; i < field->drows; ++i)
{
(void)mvwin_wchnstr(field->working, 0, (int)i * field->dcols,
widevalue + ((int)i * field->dcols),
init_mb(state);
next = _nc_wcrtomb(0, data[n].chars[0], &state);
- if (!isEILSEQ(next))
+ if (next > 0)
need += next;
}
}
{
if (pass)
{
- result[need] = source[passed];
+ result[need] = (wchar_t)source[passed];
}
++need;
++passed;
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