2 * (C) Copyright 2007-2009 John J. Foerch
3 * (C) Copyright 2007-2008 Jeremy Maitin-Shepard
5 * Use, modification, and distribution are subject to the terms specified in the
11 var interactive_commands = {};
14 * name: string name of the command.
16 * doc: Documentation string, may be null.
18 * handler: A function to handle the command.
20 * The $prefix keyword, when true, means that the command
21 * is a prefix-command.
23 define_keywords("$prefix", "$browser_object", "$prompt");
24 function interactive (name, doc, handler) {
29 browser_object: arguments.$browser_object,
30 prefix: arguments.$prefix,
32 shortdoc: get_shortdoc_string(doc),
33 prompt: arguments.$prompt,
34 source_code_reference: get_caller_source_code_reference() };
35 interactive_commands[name] = cmd;
39 function interactive_error (str) {
40 var e = new Error(str);
41 e.__proto__ = interactive_error.prototype;
44 interactive_error.prototype.__proto__ = Error.prototype;
47 function interactive_context (buffer) {
48 this.local = conkeror;
51 this.window = this.buffer.window;
53 this.local = buffer.page.local;
55 this.local = buffer.local;
59 interactive_context.prototype = {
60 constructor: interactive_context,
62 get P () this.prefix_argument,
64 get p () univ_arg_to_number(this.prefix_argument),
66 set p (default_value) univ_arg_to_number(this.prefix_argument, default_value),
68 get minibuffer () this.window.minibuffer,
72 function handle_interactive_error (window, e) {
75 if (e instanceof interactive_error) {
76 window.minibuffer.message(e.message);
77 } else if (e instanceof abort) {
78 window.minibuffer.message("Quit");
81 window.minibuffer.message("call interactively: " + e);
85 function call_interactively (I, command) {
87 var window = I.window;
89 if (typeof command == "function") {
90 // Special interactive command
95 var cmd = interactive_commands[command];
97 handle_interactive_error(
99 interactive_error("Invalid command: " + command));
104 handler = cmd.handler;
107 while (typeof handler == "string") {
108 let parent = interactive_commands[handler];
109 handler = parent.handler;
110 if (handler == command) {
111 throw (interactive_error("circular command alias, "+command));
118 handle_interactive_error(window, e);
121 handle_interactive_error(window, e);
126 function alternates () {
127 let alts = Array.prototype.slice.call(arguments, 0);
128 return function (I) {
130 if (I.prefix_argument instanceof Array) {
131 let num = I.prefix_argument = I.prefix_argument[0];
132 while (num >= 4 && index + 1 < alts.length) {
137 yield alts[index](I);
143 * Utility functions for use in the rc to alter the behavior
144 * of interactive commands.
146 function set_handler (name, handler) {
147 var cmd = interactive_commands[name];
148 cmd.handler = handler;
151 function set_default_browser_object (name, browser_object) {
152 var cmd = interactive_commands[name];
153 cmd.browser_object = browser_object;
156 provide("interactive");