Add efacf056cd

dockerdoom/trunk/textscreen/txt_dropdown.h

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+// Emacs style mode select   -*- C++ -*- 
+//-----------------------------------------------------------------------------
+//
+// Copyright(C) 2006 Simon Howard
+//
+// This program is free software; you can redistribute it and/or
+// modify it under the terms of the GNU General Public License
+// as published by the Free Software Foundation; either version 2
+// of the License, or (at your option) any later version.
+//
+// This program is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with this program; if not, write to the Free Software
+// Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
+// 02111-1307, USA.
+//
+
+#ifndef TXT_DROPDOWN_H
+#define TXT_DROPDOWN_H
+
+/**
+ * @file txt_dropdown.h
+ *
+ * Dropdown list widget.
+ */
+
+/**
+ * Dropdown list widget.
+ *
+ * A dropdown list allows the user to select from a list of values,
+ * which appears when the list is selected.
+ *
+ * When the value of a dropdown list is changed, the "changed" signal
+ * is emitted.
+ */
+
+typedef struct txt_dropdown_list_s txt_dropdown_list_t;
+
+#include "txt_widget.h"
+
+//
+// Drop-down list box.
+// 
+
+struct txt_dropdown_list_s
+{
+    txt_widget_t widget;
+    int *variable;
+    char **values;
+    int num_values;
+};
+
+/**
+ * Create a new dropdown list widget.
+ *
+ * The parameters specify a list of string labels, and a pointer to an
+ * integer variable.  The variable contains the current "value" of the
+ * list, as an index within the list of labels.
+ *
+ * @param variable        Pointer to the variable containing the
+ *                        list's value.
+ * @param values          Pointer to an array of strings containing
+ *                        the labels to use for the list.
+ * @param num_values      The number of variables in the list.
+ */
+
+txt_dropdown_list_t *TXT_NewDropdownList(int *variable, 
+                                         char **values, int num_values);
+
+#endif /* #ifndef TXT_DROPDOWN_H */
+
+