2 /* This should only be used for minibuffer states where it makes
3 * sense. In particular, it should not be used if additional cleanup
5 function minibuffer_abort (window)
7 var m = window.minibuffer;
8 var s = m.current_state;
10 throw "Invalid minibuffer state";
13 interactive("minibuffer-abort", function (I) {minibuffer_abort(I.window);});
15 define_builtin_commands(
17 function (I, command) {
20 if (m._input_mode_enabled)
22 m._restore_normal_state();
23 var e = m.input_element;
24 var c = e.controllers.getControllerForCommand(command);
26 m.ignore_input_events = true;
27 if (c && c.isCommandEnabled(command))
30 m.ignore_input_events = false;
32 var s = m.current_state;
33 if (s.ran_minibuffer_command)
34 s.ran_minibuffer_command(command);
38 /* Ignore exceptions. */
42 I.minibuffer.current_state.mark_active = !I.minibuffer.current_state.mark_active;
45 function (I) I.minibuffer.current_state.mark_active
48 function minibuffer_state(keymap, use_input_mode)
51 this.use_input_mode = use_input_mode;
53 minibuffer_state.prototype.load = function () {}
54 minibuffer_state.prototype.unload = function () {}
55 minibuffer_state.prototype.destroy = function () {}
57 function minibuffer_message_state(keymap, message, destroy_function)
59 minibuffer_state.call(this, keymap, false);
60 this._message = message;
62 this.destroy = destroy_function;
64 minibuffer_message_state.prototype = {
65 __proto__: minibuffer_state.prototype,
66 load : function (window) {
69 unload : function (window) {
72 get message () { return this._message; },
75 this.window.minibuffer._restore_normal_state();
76 this.window.minibuffer._show(this._message);
81 function minibuffer_input_state(keymap, prompt, input, selection_start, selection_end)
89 this.selection_start = selection_start;
91 this.selection_start = 0;
93 this.selection_end = selection_end;
95 this.selection_end = this.selection_start;
97 minibuffer_state.call(this, keymap, true);
99 minibuffer_input_state.prototype.__proto__ = minibuffer_state.prototype;
103 * The parameter `args' is an object specifying the arguments for
104 * basic_minibuffer_state. The following properties of args must/may
109 * initial_value: [optional] specifies the initial text
111 * select: [optional] specifies to select the initial text if set to non-null
113 define_keywords("$prompt", "$initial_value", "$select");
114 function basic_minibuffer_state()
117 var initial_value = arguments.$initial_value || "";
118 var sel_start, sel_end;
119 if (arguments.$select)
122 sel_end = initial_value.length;
124 sel_start = sel_end = initial_value.length;
126 minibuffer_input_state.call(this, minibuffer_base_keymap,
127 arguments.$prompt, initial_value,
130 basic_minibuffer_state.prototype.__proto__ = minibuffer_input_state.prototype; // inherit from minibuffer_state
132 define_variable("minibuffer_input_mode_show_message_timeout", 1000, "Time duration (in milliseconds) to flash minibuffer messages while in minibuffer input mode.");
134 function minibuffer (window)
136 this.element = window.document.getElementById("minibuffer");
137 this.output_element = window.document.getElementById("minibuffer-message");
138 this.input_prompt_element = window.document.getElementById("minibuffer-prompt");
139 this.input_element = window.document.getElementById("minibuffer-input");
141 this.input_element.inputField.addEventListener("blur", function() {
142 if (m.active && m._input_mode_enabled && !m._showing_message)
146 m.input_element.inputField.focus();
150 this.input_element.addEventListener("input", function(e) {
151 if (m.ignore_input_events || !m._input_mode_enabled)
153 var s = m.current_state;
160 // Ensure that the input area will have focus if a message is
161 // currently being flashed so that the default handler for key
162 // events will properly add text to the input area.
163 window.addEventListener("keydown", function (e) {
164 if (m._input_mode_enabled && m._showing_message)
165 m._restore_normal_state();
167 this.window = window;
168 this.last_message = "";
172 minibuffer.prototype = {
173 constructor : minibuffer.constructor,
174 get _selection_start () { return this.input_element.selectionStart; },
175 get _selection_end () { return this.input_element.selectionEnd; },
176 get _input_text () { return this.input_element.value; },
177 set _input_text (text) { this.input_element.value = text; },
178 get prompt () { return this.input_prompt_element.value; },
179 set prompt (s) { this.input_prompt_element.value = s; },
181 set_input_state : function(x) {
182 this._input_text = x[0];
183 this._set_selection(x[1], x[2]);
186 _set_selection : function (start, end) {
188 start = this._input_text.length;
190 end = this._input_text.length;
191 this.input_element.setSelectionRange(start,end);
194 /* Saved focus state */
195 saved_focused_frame : null,
196 saved_focused_element : null,
198 default_message : "",
200 current_message : null,
202 /* This method will display the specified string in the
203 * minibuffer, without recording it in any log/Messages buffer. */
204 show : function (str, force) {
205 if (!this.active || force) {
206 this.current_message = str;
211 _show : function (str, force) {
212 if (this.last_message != str)
214 this.output_element.value = str;
215 this.last_message = str;
219 message : function (str) {
220 /* TODO: add the message to a *Messages* buffer, and/or
221 * possibly dump them to the console. */
222 this.show(str, true /* force */);
224 if (str.length > 0 && this.active)
225 this._flash_temporary_message();
227 clear : function () {
228 this.current_message = null;
230 this._show(this.default_message);
233 set_default_message : function (str) {
234 this.default_message = str;
235 if (this.current_message == null)
239 get current_state () {
240 if (this.states.length == 0)
242 return this.states[this.states.length - 1];
245 push_state : function (state) {
247 this.states.push(state);
248 this._restore_state();
249 state.load(this.window);
252 pop_state : function () {
253 this.current_state.destroy();
255 this._restore_state();
258 pop_all : function () {
259 while (this.states.length > 0) {
260 this.current_state.destroy();
265 remove_state : function (state) {
266 var i = this.states.indexOf(state);
269 var was_current = (i == (this.states.length - 1));
271 this.states.splice(i, 1);
273 this._restore_state();
276 _input_mode_enabled : false,
280 /* If _input_mode_enabled is true, this is set to indicate that
281 * the message area is being temporarily shown instead of the
283 _showing_message : false,
285 _message_timer_ID : null,
287 /* This must only be called if _input_mode_enabled is true */
288 _restore_normal_state : function () {
289 if (this._showing_message)
291 this.window.clearTimeout(this._message_timer_ID);
292 this._message_timer_ID = null;
293 this._showing_message = false;
295 if (this._input_mode_enabled)
296 this._switch_to_input_mode();
298 this._show(this.current_state._message);
302 /* This must only be called if _input_mode_enabled is true */
303 _flash_temporary_message : function () {
304 if (this._showing_message)
305 this.window.clearTimeout(this._message_timer_ID);
307 this._showing_message = true;
308 if (this._input_mode_enabled)
309 this._switch_to_message_mode();
312 this._message_timer_ID = this.window.setTimeout(function(){
313 obj._restore_normal_state();
314 }, minibuffer_input_mode_show_message_timeout);
317 _switch_to_input_mode : function () {
318 this.element.setAttribute("minibuffermode", "input");
319 this.input_element.inputField.focus();
322 _switch_to_message_mode : function () {
323 this.element.setAttribute("minibuffermode", "message");
326 _restore_state : function () {
327 var s = this.current_state;
328 var want_input_mode = false;
331 this.saved_focused_frame = this.window.document.commandDispatcher.focusedWindow;
332 this.saved_focused_element = this.window.document.commandDispatcher.focusedElement;
334 if (s.use_input_mode) {
335 want_input_mode = true;
336 this._input_text = s.input;
337 this.prompt = s.prompt;
338 this._set_selection(s.selection_start, s.selection_end);
340 this._show(s._message);
342 this.window.keyboard.set_override_keymap(s.keymap);
347 this.window.keyboard.set_override_keymap(null);
348 if (this.saved_focused_element)
349 set_focus_no_scroll(this.window, this.saved_focused_element);
350 else if (this.saved_focused_frame)
351 set_focus_no_scroll(this.window, this.saved_focused_frame);
352 this.saved_focused_element = null;
353 this.saved_focused_frame = null;
354 this._show(this.current_message || this.default_message);
357 var in_input_mode = this._input_mode_enabled && !this._showing_message;
358 if (this._showing_message) {
359 this.window.clearTimeout(this._message_timer_ID);
360 this._message_timer_ID = null;
361 this._showing_message = false;
363 if (want_input_mode && !in_input_mode)
364 this._switch_to_input_mode();
365 else if (!want_input_mode && in_input_mode)
366 this._switch_to_message_mode();
367 this._input_mode_enabled = want_input_mode;
370 _save_state : function () {
371 var s = this.current_state;
374 if (s.use_input_mode) {
375 s.input = this._input_text;
376 s.prompt = this.prompt;
377 s.selection_start = this._selection_start;
378 s.selection_end = this._selection_end;
380 s.unload(this.window);
384 insert_before : function (element) {
385 this.element.parentNode.insertBefore(element, this.element);
389 function minibuffer_initialize_window(window)
391 window.minibuffer = new minibuffer(window);
394 add_hook("window_initialize_early_hook", minibuffer_initialize_window);
396 function minibuffer_window_close_handler(window) {
397 window.minibuffer.pop_all();
399 add_hook("window_close_hook", minibuffer_window_close_handler);
401 /* Note: This is concise, but doesn't seem to be useful in practice,
402 * because nothing can be done with the state alone. */
403 minibuffer.prototype.check_state = function(type) {
404 var s = this.current_state;
405 if (!(s instanceof type))
406 throw new Error("Invalid minibuffer state.");
410 minibuffer.prototype.show_wait_message = function (initial_message, destroy_function) {
411 var s = new minibuffer_message_state(minibuffer_message_keymap, initial_message, destroy_function);
416 minibuffer.prototype.wait_for = function minibuffer__wait_for(message, coroutine) {
417 var cc = yield CONTINUATION;
419 var s = this.show_wait_message(message, function () { if (!done) cc.throw(abort()); });
422 result = yield coroutine;
426 this.remove_state(s);
428 yield co_return(result);