ncurses 5.1
[ncurses.git] / doc / html / ada / terminal_interface-curses-forms-field_types-user-choice__adb.htm
1 <HTML><HEAD><TITLE>terminal_interface-curses-forms-field_types-user-choice.adb</TITLE></HEAD>
2 <BODY>
3 <HR><DIV ALIGN="center"><H1> File : terminal_interface-curses-forms-field_types-user-choice.adb </H1></DIV><HR>
4 <PRE>
5 <FONT COLOR=green><EM>------------------------------------------------------------------------------</EM></FONT>
6 <FONT COLOR=green><EM>--                                                                          --</EM></FONT>
7 <FONT COLOR=green><EM>--                           <A HREF="http://www.gnat.com">GNAT</A> ncurses Binding                           --</EM></FONT>
8 <FONT COLOR=green><EM>--                                                                          --</EM></FONT>
9 <FONT COLOR=green><EM>--          Terminal_Interface.Curses.Forms.Field_Types.User.Choice         --</EM></FONT>
10 <FONT COLOR=green><EM>--                                                                          --</EM></FONT>
11 <FONT COLOR=green><EM>--                                 B O D Y                                  --</EM></FONT>
12 <FONT COLOR=green><EM>--                                                                          --</EM></FONT>
13 <FONT COLOR=green><EM>------------------------------------------------------------------------------</EM></FONT>
14 <FONT COLOR=green><EM>-- Copyright (c) 1998 Free Software Foundation, Inc.                        --</EM></FONT>
15 <FONT COLOR=green><EM>--                                                                          --</EM></FONT>
16 <FONT COLOR=green><EM>-- Permission is hereby granted, free of charge, to any person obtaining a  --</EM></FONT>
17 <FONT COLOR=green><EM>-- copy of this software and associated documentation files (the            --</EM></FONT>
18 <FONT COLOR=green><EM>-- "Software"), to deal in the Software without restriction, including      --</EM></FONT>
19 <FONT COLOR=green><EM>-- without limitation the rights to use, copy, modify, merge, publish,      --</EM></FONT>
20 <FONT COLOR=green><EM>-- distribute, distribute with modifications, sublicense, and/or sell       --</EM></FONT>
21 <FONT COLOR=green><EM>-- copies of the Software, and to permit persons to whom the Software is    --</EM></FONT>
22 <FONT COLOR=green><EM>-- furnished to do so, subject to the following conditions:                 --</EM></FONT>
23 <FONT COLOR=green><EM>--                                                                          --</EM></FONT>
24 <FONT COLOR=green><EM>-- The above copyright notice and this permission notice shall be included  --</EM></FONT>
25 <FONT COLOR=green><EM>-- in all copies or substantial portions of the Software.                   --</EM></FONT>
26 <FONT COLOR=green><EM>--                                                                          --</EM></FONT>
27 <FONT COLOR=green><EM>-- THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS  --</EM></FONT>
28 <FONT COLOR=green><EM>-- OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF               --</EM></FONT>
29 <FONT COLOR=green><EM>-- MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.   --</EM></FONT>
30 <FONT COLOR=green><EM>-- IN NO EVENT SHALL THE ABOVE COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,   --</EM></FONT>
31 <FONT COLOR=green><EM>-- DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR    --</EM></FONT>
32 <FONT COLOR=green><EM>-- OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR    --</EM></FONT>
33 <FONT COLOR=green><EM>-- THE USE OR OTHER DEALINGS IN THE SOFTWARE.                               --</EM></FONT>
34 <FONT COLOR=green><EM>--                                                                          --</EM></FONT>
35 <FONT COLOR=green><EM>-- Except as contained in this notice, the name(s) of the above copyright   --</EM></FONT>
36 <FONT COLOR=green><EM>-- holders shall not be used in advertising or otherwise to promote the     --</EM></FONT>
37 <FONT COLOR=green><EM>-- sale, use or other dealings in this Software without prior written       --</EM></FONT>
38 <FONT COLOR=green><EM>-- authorization.                                                           --</EM></FONT>
39 <FONT COLOR=green><EM>------------------------------------------------------------------------------</EM></FONT>
40 <FONT COLOR=green><EM>--  Author: <A HREF="http://home.t-online.de/home/Juergen.Pfeifer">J&uuml;rgen Pfeifer</A> &lt;<A HREF="mailto:juergen.pfeifer@gmx.net">&lt;juergen.pfeifer@gmx.net&gt;</A>&gt; 1996</EM></FONT>
41 <FONT COLOR=green><EM>--  Version Control:</EM></FONT>
42 <FONT COLOR=green><EM>--  @Revision: 1.8 @</EM></FONT>
43 <FONT COLOR=green><EM>--  Binding Version 01.00</EM></FONT>
44 <FONT COLOR=green><EM>------------------------------------------------------------------------------</EM></FONT>
45 <b>with</b> Ada.Unchecked_Conversion;
46 <b>with</b> <A HREF="interfac__ads.htm#23_9">Interfaces</A>.C;
47 <b>with</b> <A HREF="terminal_interface__ads.htm#41_9">Terminal_Interface</A>.<A HREF="terminal_interface-curses__ads.htm#48_28">Curses</A>.<A HREF="terminal_interface-curses-aux__ads.htm#50_35">Aux</A>; <b>use</b> <A HREF="terminal_interface__ads.htm#41_9">Terminal_Interface</A>.<A HREF="terminal_interface-curses__ads.htm#48_28">Curses</A>.<A HREF="terminal_interface-curses-aux__ads.htm#50_35">Aux</A>;
48
49 <b>package</b> <b>body</b> Terminal_Interface.Curses.Forms.Field_Types.User.<A HREF="terminal_interface-curses-forms-field_types-user-choice__ads.htm#43_58">Choice</A><FONT COLOR=red><A NAME="45_63"></A></FONT> <b>is</b>
50
51    <b>use</b> <b>type</b> <A HREF="interfac__ads.htm#23_9">Interfaces</A>.C.int;
52
53    <b>function</b> <FONT COLOR=red><A NAME="49_13">To_Argument_Access</A></FONT> <b>is</b> <b>new</b> Ada.Unchecked_Conversion
54      (System.Address, Argument_Access);
55
56    <b>function</b> <A HREF="terminal_interface-curses-forms-field_types-user-choice__ads.htm#82_13">Generic_Next</A><FONT COLOR=red><A NAME="52_13"></A></FONT> (<A HREF="terminal_interface-curses-forms-field_types-user-choice__ads.htm#82_27">Fld</A> : <A HREF="terminal_interface-curses-forms__ads.htm#56_9">Field</A>;
57                           <A HREF="terminal_interface-curses-forms-field_types-user-choice__ads.htm#83_27">Usr</A> : System.Address) <b>return</b> <A HREF="terminal_interface-curses-forms-field_types-user-choice__ads.htm#48_12">C_Int</A>
58    <b>is</b>
59       <FONT COLOR=red><A NAME="55_7">Result</A></FONT> : Boolean;
60       Udf    : User_Defined_Field_Type_With_Choice_Access :=
61         User_Defined_Field_Type_With_Choice_Access
62         (<A HREF="terminal_interface-curses-forms-field_types-user-choice__adb.htm#49_13">To_Argument_Access</A> (<A HREF="terminal_interface-curses-forms-field_types-user-choice__ads.htm#83_27">Usr</A>).Typ);
63    <b>begin</b>
64       <A HREF="terminal_interface-curses-forms-field_types-user-choice__adb.htm#55_7">Result</A> := <A HREF="terminal_interface-curses-forms-field_types-user-choice__ads.htm#60_13">Next</A> (<A HREF="terminal_interface-curses-forms-field_types-user-choice__ads.htm#82_27">Fld</A>, Udf.<b>all</b>);
65       <b>return</b> <A HREF="terminal_interface-curses-forms-field_types-user-choice__ads.htm#48_12">C_Int</A> (Boolean'Pos (<A HREF="terminal_interface-curses-forms-field_types-user-choice__adb.htm#55_7">Result</A>));
66    <b>end</b> Generic_Next;
67
68    <b>function</b> <A HREF="terminal_interface-curses-forms-field_types-user-choice__ads.htm#89_13">Generic_Prev</A><FONT COLOR=red><A NAME="64_13"></A></FONT> (<A HREF="terminal_interface-curses-forms-field_types-user-choice__ads.htm#89_27">Fld</A> : <A HREF="terminal_interface-curses-forms__ads.htm#56_9">Field</A>;
69                           <A HREF="terminal_interface-curses-forms-field_types-user-choice__ads.htm#90_27">Usr</A> : System.Address) <b>return</b> <A HREF="terminal_interface-curses-forms-field_types-user-choice__ads.htm#48_12">C_Int</A>
70    <b>is</b>
71       <FONT COLOR=red><A NAME="67_7">Result</A></FONT> : Boolean;
72       Udf    : User_Defined_Field_Type_With_Choice_Access :=
73         User_Defined_Field_Type_With_Choice_Access
74         (<A HREF="terminal_interface-curses-forms-field_types-user-choice__adb.htm#49_13">To_Argument_Access</A> (<A HREF="terminal_interface-curses-forms-field_types-user-choice__ads.htm#90_27">Usr</A>).Typ);
75    <b>begin</b>
76       <A HREF="terminal_interface-curses-forms-field_types-user-choice__adb.htm#67_7">Result</A> := <A HREF="terminal_interface-curses-forms-field_types-user-choice__ads.htm#67_13">Previous</A> (<A HREF="terminal_interface-curses-forms-field_types-user-choice__ads.htm#89_27">Fld</A>, Udf.<b>all</b>);
77       <b>return</b> <A HREF="terminal_interface-curses-forms-field_types-user-choice__ads.htm#48_12">C_Int</A> (Boolean'Pos (<A HREF="terminal_interface-curses-forms-field_types-user-choice__adb.htm#67_7">Result</A>));
78    <b>end</b> Generic_Prev;
79
80    <FONT COLOR=green><EM>--  -----------------------------------------------------------------------</EM></FONT>
81    <FONT COLOR=green><EM>--</EM></FONT>
82    <b>function</b> <A HREF="terminal_interface-curses-forms-field_types-user-choice__ads.htm#80_13">C_Generic_Choice</A><FONT COLOR=red><A NAME="78_13"></A></FONT> <b>return</b> C_Field_Type
83    <b>is</b>
84       <FONT COLOR=red><A NAME="80_7">Res</A></FONT> : <A HREF="terminal_interface-curses-aux__ads.htm#78_12">Eti_Error</A>;
85       T   : C_Field_Type;
86    <b>begin</b>
87       <b>if</b> M_Generic_Choice = Null_Field_Type <b>then</b>
88          T := <A HREF="terminal_interface-curses-forms-field_types__ads.htm#222_13">New_Fieldtype</A> (<A HREF="terminal_interface-curses-forms-field_types-user__ads.htm#83_13">Generic_Field_Check</A>'<b>Access</b>,
89                              <A HREF="terminal_interface-curses-forms-field_types-user__ads.htm#90_13">Generic_Char_Check</A>'<b>Access</b>);
90          <b>if</b> T = Null_Field_Type <b>then</b>
91             <b>raise</b> <A HREF="terminal_interface-curses-forms__ads.htm#289_4">Form_Exception</A>;
92          <b>else</b>
93             <A HREF="terminal_interface-curses-forms-field_types-user-choice__adb.htm#80_7">Res</A> := <A HREF="terminal_interface-curses-forms-field_types__ads.htm#227_13">Set_Fieldtype_Arg</A> (T,
94                                       <A HREF="terminal_interface-curses-forms-field_types__ads.htm#162_13">Make_Arg</A>'<b>Access</b>,
95                                       <A HREF="terminal_interface-curses-forms-field_types__ads.htm#167_13">Copy_Arg</A>'<b>Access</b>,
96                                       <A HREF="terminal_interface-curses-forms-field_types__ads.htm#172_14">Free_Arg</A>'<b>Access</b>);
97             <b>if</b> <A HREF="terminal_interface-curses-forms-field_types-user-choice__adb.htm#80_7">Res</A> /= <A HREF="terminal_interface-curses-aux__ads.htm#80_4">E_Ok</A> <b>then</b>
98                <A HREF="terminal_interface-curses-aux__ads.htm#96_14">Eti_Exception</A> (<A HREF="terminal_interface-curses-forms-field_types-user-choice__adb.htm#80_7">Res</A>);
99             <b>end</b> <b>if</b>;
100
101             <A HREF="terminal_interface-curses-forms-field_types-user-choice__adb.htm#80_7">Res</A> := <A HREF="terminal_interface-curses-forms-field_types__ads.htm#234_13">Set_Fieldtype_Choice</A> (T,
102                                          <A HREF="terminal_interface-curses-forms-field_types-user-choice__ads.htm#82_13">Generic_Next</A>'<b>Access</b>,
103                                          <A HREF="terminal_interface-curses-forms-field_types-user-choice__ads.htm#89_13">Generic_Prev</A>'<b>Access</b>);
104             <b>if</b> <A HREF="terminal_interface-curses-forms-field_types-user-choice__adb.htm#80_7">Res</A> /= <A HREF="terminal_interface-curses-aux__ads.htm#80_4">E_Ok</A> <b>then</b>
105                <A HREF="terminal_interface-curses-aux__ads.htm#96_14">Eti_Exception</A> (<A HREF="terminal_interface-curses-forms-field_types-user-choice__adb.htm#80_7">Res</A>);
106             <b>end</b> <b>if</b>;
107          <b>end</b> <b>if</b>;
108          M_Generic_Choice := T;
109       <b>end</b> <b>if</b>;
110       <b>pragma</b> Assert (M_Generic_Choice /= Null_Field_Type);
111       <b>return</b> M_Generic_Choice;
112    <b>end</b> C_Generic_Choice;
113
114 <b>end</b> Terminal_Interface.Curses.Forms.Field_Types.User.Choice;
115 </PRE></BODY></HTML>