2 * (C) Copyright 2008 Jeremy Maitin-Shepard
3 * (C) Copyright 2009 John J. Foerch
5 * Use, modification, and distribution are subject to the terms specified in the
9 require("minibuffer-read.js");
11 function or_string(options) {
12 return options.slice(0,options.length-1).join(", ") + " or " + options[options.length - 1];
15 define_keywords("$options");
16 minibuffer.prototype.read_explicit_option = function () {
18 var options = arguments.$options;
19 var options_string = or_string(options);
20 var result = yield this.read(forward_keywords(arguments),
21 $prompt = arguments.$prompt + " (" + options_string + ")",
22 $validator = function (x, m) {
23 if (options.indexOf(x) == -1) {
24 m.message("Please answer " + options_string + ".");
31 yield co_return(result);
34 minibuffer.prototype.read_yes_or_no = function () {
36 var result = yield this.read_explicit_option(forward_keywords(arguments), $options = ["yes", "no"]);
37 yield co_return(result == "yes");
40 function single_character_options_minibuffer_state (window, continuation) {
42 this.continuation = continuation;
43 this.options = arguments.$options;
44 minibuffer_input_state.call(this, window, single_character_options_minibuffer_keymap, arguments.$prompt);
46 single_character_options_minibuffer_state.prototype = {
47 __proto__: minibuffer_input_state.prototype,
48 destroy: function (window) {
49 if (this.continuation)
50 this.continuation.throw(abort());
51 minibuffer_input_state.prototype.destroy.call(this, window);
54 function single_character_options_enter_character(window, s, event) {
55 var ch = String.fromCharCode(event.charCode);
56 if (s.options.indexOf(ch) != -1) {
57 var c = s.continuation;
58 delete s.continuation;
59 window.minibuffer.pop_state();
64 var str = "Please answer " + or_string(s.options) + ".";
65 window.minibuffer.message(str);
68 interactive("single-character-options-enter-character", null,
70 single_character_options_enter_character(
72 I.minibuffer.check_state(single_character_options_minibuffer_state),
76 minibuffer.prototype.read_single_character_option = function () {
78 var s = new single_character_options_minibuffer_state(this.window, (yield CONTINUATION), forward_keywords(arguments));
80 var result = yield SUSPEND;
81 yield co_return(result);