X-Git-Url: https://ncurses.scripts.mit.edu/?a=blobdiff_plain;f=form%2Ffld_current.c;fp=form%2Ffld_current.c;h=72534a9e36a3196cd02df6d5398a8624f54d8f4e;hb=661078ddbde3ce0f3b06e95642fbb9b5fef7dca1;hp=0000000000000000000000000000000000000000;hpb=3a9b6a3bf0269231bef7de74757a910dedd04e0c;p=ncurses.git

diff --git a/form/fld_current.c b/form/fld_current.c
new file mode 100644
index 00000000..72534a9e
--- /dev/null
+++ b/form/fld_current.c
@@ -0,0 +1,124 @@
+/****************************************************************************
+ * Copyright (c) 1998 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            *
+ * "Software"), to deal in the Software without restriction, including      *
+ * without limitation the rights to use, copy, modify, merge, publish,      *
+ * distribute, distribute with modifications, sublicense, and/or sell       *
+ * copies of the Software, and to permit persons to whom the Software is    *
+ * furnished to do so, subject to the following conditions:                 *
+ *                                                                          *
+ * The above copyright notice and this permission notice shall be included  *
+ * in all copies or substantial portions of the Software.                   *
+ *                                                                          *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS  *
+ * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF               *
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.   *
+ * IN NO EVENT SHALL THE ABOVE COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,   *
+ * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR    *
+ * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR    *
+ * THE USE OR OTHER DEALINGS IN THE SOFTWARE.                               *
+ *                                                                          *
+ * Except as contained in this notice, the name(s) of the above copyright   *
+ * holders shall not be used in advertising or otherwise to promote the     *
+ * sale, use or other dealings in this Software without prior written       *
+ * authorization.                                                           *
+ ****************************************************************************/
+
+/****************************************************************************
+ *   Author: Juergen Pfeifer <Juergen.Pfeifer@T-Online.de> 1995,1997        *
+ ****************************************************************************/
+#include "form.priv.h"
+
+MODULE_ID("$Id: fld_current.c,v 1.2 1998/02/11 12:13:44 tom Exp $")
+
+/*---------------------------------------------------------------------------
+|   Facility      :  libnform  
+|   Function      :  int set_current_field(FORM  * form,FIELD * field)
+|   
+|   Description   :  Set the current field of the form to the specified one.
+|
+|   Return Values :  E_OK              - success
+|                    E_BAD_ARGUMENT    - invalid form or field pointer
+|                    E_REQUEST_DENIED  - field not selectable
+|                    E_BAD_STATE       - called from a hook routine
+|                    E_INVALID_FIELD   - current field can't be left
+|                    E_SYSTEM_ERROR    - system error
++--------------------------------------------------------------------------*/
+int set_current_field(FORM  * form, FIELD * field)
+{
+  int err = E_OK;
+
+  if ( !form || !field )
+    RETURN(E_BAD_ARGUMENT);
+
+  if ( (form != field->form) || Field_Is_Not_Selectable(field) )
+    RETURN(E_REQUEST_DENIED);
+
+  if (!(form->status & _POSTED))
+    {
+      form->current = field;
+      form->curpage = field->page;
+  }
+  else
+    {
+      if (form->status & _IN_DRIVER) 
+	err = E_BAD_STATE;
+      else
+	{
+	  if (form->current != field)
+	    {
+	      if (!_nc_Internal_Validation(form)) 
+	       err = E_INVALID_FIELD;
+	      else
+		{
+		  Call_Hook(form,fieldterm);
+		  if (field->page != form->curpage)
+		    {
+		      Call_Hook(form,formterm);
+		      err = _nc_Set_Form_Page(form,field->page,field);
+		      Call_Hook(form,forminit);
+		    } 
+		  else 
+		    {
+		      err = _nc_Set_Current_Field(form,field);
+		    }
+		  Call_Hook(form,fieldinit);
+		  _nc_Refresh_Current_Field(form);
+		}
+	    }
+	}
+    }
+  RETURN(err);
+}
+
+/*---------------------------------------------------------------------------
+|   Facility      :  libnform  
+|   Function      :  FIELD *current_field(const FORM * form)
+|   
+|   Description   :  Return the current field.
+|
+|   Return Values :  Pointer to the current field.
++--------------------------------------------------------------------------*/
+FIELD *current_field(const FORM * form)
+{
+  return Normalize_Form(form)->current;
+}
+
+/*---------------------------------------------------------------------------
+|   Facility      :  libnform  
+|   Function      :  int field_index(const FIELD * field)
+|   
+|   Description   :  Return the index of the field in the field-array of
+|                    the form.
+|
+|   Return Values :  >= 0   : field index
+|                    -1     : fieldpointer invalid or field not connected
++--------------------------------------------------------------------------*/
+int field_index(const FIELD * field)
+{
+  return ( (field && field->form) ? field->index : -1 );
+}
+
+/* fld_current.c ends here */