Mercurial
comparison .cms/lib/codemirror/addon/hint/show-hint.js @ 0:78edf6b517a0 draft
24.10
author | Coffee CMS <info@coffee-cms.ru> |
---|---|
date | Fri, 11 Oct 2024 22:40:23 +0000 |
parents | |
children |
comparison
equal
deleted
inserted
replaced
-1:000000000000 | 0:78edf6b517a0 |
---|---|
1 // CodeMirror, copyright (c) by Marijn Haverbeke and others | |
2 // Distributed under an MIT license: https://codemirror.net/5/LICENSE | |
3 | |
4 // declare global: DOMRect | |
5 | |
6 (function(mod) { | |
7 if (typeof exports == "object" && typeof module == "object") // CommonJS | |
8 mod(require("../../lib/codemirror")); | |
9 else if (typeof define == "function" && define.amd) // AMD | |
10 define(["../../lib/codemirror"], mod); | |
11 else // Plain browser env | |
12 mod(CodeMirror); | |
13 })(function(CodeMirror) { | |
14 "use strict"; | |
15 | |
16 var HINT_ELEMENT_CLASS = "CodeMirror-hint"; | |
17 var ACTIVE_HINT_ELEMENT_CLASS = "CodeMirror-hint-active"; | |
18 | |
19 // This is the old interface, kept around for now to stay | |
20 // backwards-compatible. | |
21 CodeMirror.showHint = function(cm, getHints, options) { | |
22 if (!getHints) return cm.showHint(options); | |
23 if (options && options.async) getHints.async = true; | |
24 var newOpts = {hint: getHints}; | |
25 if (options) for (var prop in options) newOpts[prop] = options[prop]; | |
26 return cm.showHint(newOpts); | |
27 }; | |
28 | |
29 CodeMirror.defineExtension("showHint", function(options) { | |
30 options = parseOptions(this, this.getCursor("start"), options); | |
31 var selections = this.listSelections() | |
32 if (selections.length > 1) return; | |
33 // By default, don't allow completion when something is selected. | |
34 // A hint function can have a `supportsSelection` property to | |
35 // indicate that it can handle selections. | |
36 if (this.somethingSelected()) { | |
37 if (!options.hint.supportsSelection) return; | |
38 // Don't try with cross-line selections | |
39 for (var i = 0; i < selections.length; i++) | |
40 if (selections[i].head.line != selections[i].anchor.line) return; | |
41 } | |
42 | |
43 if (this.state.completionActive) this.state.completionActive.close(); | |
44 var completion = this.state.completionActive = new Completion(this, options); | |
45 if (!completion.options.hint) return; | |
46 | |
47 CodeMirror.signal(this, "startCompletion", this); | |
48 completion.update(true); | |
49 }); | |
50 | |
51 CodeMirror.defineExtension("closeHint", function() { | |
52 if (this.state.completionActive) this.state.completionActive.close() | |
53 }) | |
54 | |
55 function Completion(cm, options) { | |
56 this.cm = cm; | |
57 this.options = options; | |
58 this.widget = null; | |
59 this.debounce = 0; | |
60 this.tick = 0; | |
61 this.startPos = this.cm.getCursor("start"); | |
62 this.startLen = this.cm.getLine(this.startPos.line).length - this.cm.getSelection().length; | |
63 | |
64 if (this.options.updateOnCursorActivity) { | |
65 var self = this; | |
66 cm.on("cursorActivity", this.activityFunc = function() { self.cursorActivity(); }); | |
67 } | |
68 } | |
69 | |
70 var requestAnimationFrame = window.requestAnimationFrame || function(fn) { | |
71 return setTimeout(fn, 1000/60); | |
72 }; | |
73 var cancelAnimationFrame = window.cancelAnimationFrame || clearTimeout; | |
74 | |
75 Completion.prototype = { | |
76 close: function() { | |
77 if (!this.active()) return; | |
78 this.cm.state.completionActive = null; | |
79 this.tick = null; | |
80 if (this.options.updateOnCursorActivity) { | |
81 this.cm.off("cursorActivity", this.activityFunc); | |
82 } | |
83 | |
84 if (this.widget && this.data) CodeMirror.signal(this.data, "close"); | |
85 if (this.widget) this.widget.close(); | |
86 CodeMirror.signal(this.cm, "endCompletion", this.cm); | |
87 }, | |
88 | |
89 active: function() { | |
90 return this.cm.state.completionActive == this; | |
91 }, | |
92 | |
93 pick: function(data, i) { | |
94 var completion = data.list[i], self = this; | |
95 this.cm.operation(function() { | |
96 if (completion.hint) | |
97 completion.hint(self.cm, data, completion); | |
98 else | |
99 self.cm.replaceRange(getText(completion), completion.from || data.from, | |
100 completion.to || data.to, "complete"); | |
101 CodeMirror.signal(data, "pick", completion); | |
102 self.cm.scrollIntoView(); | |
103 }); | |
104 if (this.options.closeOnPick) { | |
105 this.close(); | |
106 } | |
107 }, | |
108 | |
109 cursorActivity: function() { | |
110 if (this.debounce) { | |
111 cancelAnimationFrame(this.debounce); | |
112 this.debounce = 0; | |
113 } | |
114 | |
115 var identStart = this.startPos; | |
116 if(this.data) { | |
117 identStart = this.data.from; | |
118 } | |
119 | |
120 var pos = this.cm.getCursor(), line = this.cm.getLine(pos.line); | |
121 if (pos.line != this.startPos.line || line.length - pos.ch != this.startLen - this.startPos.ch || | |
122 pos.ch < identStart.ch || this.cm.somethingSelected() || | |
123 (!pos.ch || this.options.closeCharacters.test(line.charAt(pos.ch - 1)))) { | |
124 this.close(); | |
125 } else { | |
126 var self = this; | |
127 this.debounce = requestAnimationFrame(function() {self.update();}); | |
128 if (this.widget) this.widget.disable(); | |
129 } | |
130 }, | |
131 | |
132 update: function(first) { | |
133 if (this.tick == null) return | |
134 var self = this, myTick = ++this.tick | |
135 fetchHints(this.options.hint, this.cm, this.options, function(data) { | |
136 if (self.tick == myTick) self.finishUpdate(data, first) | |
137 }) | |
138 }, | |
139 | |
140 finishUpdate: function(data, first) { | |
141 if (this.data) CodeMirror.signal(this.data, "update"); | |
142 | |
143 var picked = (this.widget && this.widget.picked) || (first && this.options.completeSingle); | |
144 if (this.widget) this.widget.close(); | |
145 | |
146 this.data = data; | |
147 | |
148 if (data && data.list.length) { | |
149 if (picked && data.list.length == 1) { | |
150 this.pick(data, 0); | |
151 } else { | |
152 this.widget = new Widget(this, data); | |
153 CodeMirror.signal(data, "shown"); | |
154 } | |
155 } | |
156 } | |
157 }; | |
158 | |
159 function parseOptions(cm, pos, options) { | |
160 var editor = cm.options.hintOptions; | |
161 var out = {}; | |
162 for (var prop in defaultOptions) out[prop] = defaultOptions[prop]; | |
163 if (editor) for (var prop in editor) | |
164 if (editor[prop] !== undefined) out[prop] = editor[prop]; | |
165 if (options) for (var prop in options) | |
166 if (options[prop] !== undefined) out[prop] = options[prop]; | |
167 if (out.hint.resolve) out.hint = out.hint.resolve(cm, pos) | |
168 return out; | |
169 } | |
170 | |
171 function getText(completion) { | |
172 if (typeof completion == "string") return completion; | |
173 else return completion.text; | |
174 } | |
175 | |
176 function buildKeyMap(completion, handle) { | |
177 var baseMap = { | |
178 Up: function() {handle.moveFocus(-1);}, | |
179 Down: function() {handle.moveFocus(1);}, | |
180 PageUp: function() {handle.moveFocus(-handle.menuSize() + 1, true);}, | |
181 PageDown: function() {handle.moveFocus(handle.menuSize() - 1, true);}, | |
182 Home: function() {handle.setFocus(0);}, | |
183 End: function() {handle.setFocus(handle.length - 1);}, | |
184 Enter: handle.pick, | |
185 Tab: handle.pick, | |
186 Esc: handle.close | |
187 }; | |
188 | |
189 var mac = /Mac/.test(navigator.platform); | |
190 | |
191 if (mac) { | |
192 baseMap["Ctrl-P"] = function() {handle.moveFocus(-1);}; | |
193 baseMap["Ctrl-N"] = function() {handle.moveFocus(1);}; | |
194 } | |
195 | |
196 var custom = completion.options.customKeys; | |
197 var ourMap = custom ? {} : baseMap; | |
198 function addBinding(key, val) { | |
199 var bound; | |
200 if (typeof val != "string") | |
201 bound = function(cm) { return val(cm, handle); }; | |
202 // This mechanism is deprecated | |
203 else if (baseMap.hasOwnProperty(val)) | |
204 bound = baseMap[val]; | |
205 else | |
206 bound = val; | |
207 ourMap[key] = bound; | |
208 } | |
209 if (custom) | |
210 for (var key in custom) if (custom.hasOwnProperty(key)) | |
211 addBinding(key, custom[key]); | |
212 var extra = completion.options.extraKeys; | |
213 if (extra) | |
214 for (var key in extra) if (extra.hasOwnProperty(key)) | |
215 addBinding(key, extra[key]); | |
216 return ourMap; | |
217 } | |
218 | |
219 function getHintElement(hintsElement, el) { | |
220 while (el && el != hintsElement) { | |
221 if (el.nodeName.toUpperCase() === "LI" && el.parentNode == hintsElement) return el; | |
222 el = el.parentNode; | |
223 } | |
224 } | |
225 | |
226 function Widget(completion, data) { | |
227 this.id = "cm-complete-" + Math.floor(Math.random(1e6)) | |
228 this.completion = completion; | |
229 this.data = data; | |
230 this.picked = false; | |
231 var widget = this, cm = completion.cm; | |
232 var ownerDocument = cm.getInputField().ownerDocument; | |
233 var parentWindow = ownerDocument.defaultView || ownerDocument.parentWindow; | |
234 | |
235 var hints = this.hints = ownerDocument.createElement("ul"); | |
236 hints.setAttribute("role", "listbox") | |
237 hints.setAttribute("aria-expanded", "true") | |
238 hints.id = this.id | |
239 var theme = completion.cm.options.theme; | |
240 hints.className = "CodeMirror-hints " + theme; | |
241 this.selectedHint = data.selectedHint || 0; | |
242 | |
243 var completions = data.list; | |
244 for (var i = 0; i < completions.length; ++i) { | |
245 var elt = hints.appendChild(ownerDocument.createElement("li")), cur = completions[i]; | |
246 var className = HINT_ELEMENT_CLASS + (i != this.selectedHint ? "" : " " + ACTIVE_HINT_ELEMENT_CLASS); | |
247 if (cur.className != null) className = cur.className + " " + className; | |
248 elt.className = className; | |
249 if (i == this.selectedHint) elt.setAttribute("aria-selected", "true") | |
250 elt.id = this.id + "-" + i | |
251 elt.setAttribute("role", "option") | |
252 if (cur.render) cur.render(elt, data, cur); | |
253 else elt.appendChild(ownerDocument.createTextNode(cur.displayText || getText(cur))); | |
254 elt.hintId = i; | |
255 } | |
256 | |
257 var container = completion.options.container || ownerDocument.body; | |
258 var pos = cm.cursorCoords(completion.options.alignWithWord ? data.from : null); | |
259 var left = pos.left, top = pos.bottom, below = true; | |
260 var offsetLeft = 0, offsetTop = 0; | |
261 if (container !== ownerDocument.body) { | |
262 // We offset the cursor position because left and top are relative to the offsetParent's top left corner. | |
263 var isContainerPositioned = ['absolute', 'relative', 'fixed'].indexOf(parentWindow.getComputedStyle(container).position) !== -1; | |
264 var offsetParent = isContainerPositioned ? container : container.offsetParent; | |
265 var offsetParentPosition = offsetParent.getBoundingClientRect(); | |
266 var bodyPosition = ownerDocument.body.getBoundingClientRect(); | |
267 offsetLeft = (offsetParentPosition.left - bodyPosition.left - offsetParent.scrollLeft); | |
268 offsetTop = (offsetParentPosition.top - bodyPosition.top - offsetParent.scrollTop); | |
269 } | |
270 hints.style.left = (left - offsetLeft) + "px"; | |
271 hints.style.top = (top - offsetTop) + "px"; | |
272 | |
273 // If we're at the edge of the screen, then we want the menu to appear on the left of the cursor. | |
274 var winW = parentWindow.innerWidth || Math.max(ownerDocument.body.offsetWidth, ownerDocument.documentElement.offsetWidth); | |
275 var winH = parentWindow.innerHeight || Math.max(ownerDocument.body.offsetHeight, ownerDocument.documentElement.offsetHeight); | |
276 container.appendChild(hints); | |
277 cm.getInputField().setAttribute("aria-autocomplete", "list") | |
278 cm.getInputField().setAttribute("aria-owns", this.id) | |
279 cm.getInputField().setAttribute("aria-activedescendant", this.id + "-" + this.selectedHint) | |
280 | |
281 var box = completion.options.moveOnOverlap ? hints.getBoundingClientRect() : new DOMRect(); | |
282 var scrolls = completion.options.paddingForScrollbar ? hints.scrollHeight > hints.clientHeight + 1 : false; | |
283 | |
284 // Compute in the timeout to avoid reflow on init | |
285 var startScroll; | |
286 setTimeout(function() { startScroll = cm.getScrollInfo(); }); | |
287 | |
288 var overlapY = box.bottom - winH; | |
289 if (overlapY > 0) { // Does not fit below | |
290 var height = box.bottom - box.top, spaceAbove = box.top - (pos.bottom - pos.top) - 2 | |
291 if (winH - box.top < spaceAbove) { // More room at the top | |
292 if (height > spaceAbove) hints.style.height = (height = spaceAbove) + "px"; | |
293 hints.style.top = ((top = pos.top - height) + offsetTop) + "px"; | |
294 below = false; | |
295 } else { | |
296 hints.style.height = (winH - box.top - 2) + "px"; | |
297 } | |
298 } | |
299 var overlapX = box.right - winW; | |
300 if (scrolls) overlapX += cm.display.nativeBarWidth; | |
301 if (overlapX > 0) { | |
302 if (box.right - box.left > winW) { | |
303 hints.style.width = (winW - 5) + "px"; | |
304 overlapX -= (box.right - box.left) - winW; | |
305 } | |
306 hints.style.left = (left = Math.max(pos.left - overlapX - offsetLeft, 0)) + "px"; | |
307 } | |
308 if (scrolls) for (var node = hints.firstChild; node; node = node.nextSibling) | |
309 node.style.paddingRight = cm.display.nativeBarWidth + "px" | |
310 | |
311 cm.addKeyMap(this.keyMap = buildKeyMap(completion, { | |
312 moveFocus: function(n, avoidWrap) { widget.changeActive(widget.selectedHint + n, avoidWrap); }, | |
313 setFocus: function(n) { widget.changeActive(n); }, | |
314 menuSize: function() { return widget.screenAmount(); }, | |
315 length: completions.length, | |
316 close: function() { completion.close(); }, | |
317 pick: function() { widget.pick(); }, | |
318 data: data | |
319 })); | |
320 | |
321 if (completion.options.closeOnUnfocus) { | |
322 var closingOnBlur; | |
323 cm.on("blur", this.onBlur = function() { closingOnBlur = setTimeout(function() { completion.close(); }, 100); }); | |
324 cm.on("focus", this.onFocus = function() { clearTimeout(closingOnBlur); }); | |
325 } | |
326 | |
327 cm.on("scroll", this.onScroll = function() { | |
328 var curScroll = cm.getScrollInfo(), editor = cm.getWrapperElement().getBoundingClientRect(); | |
329 if (!startScroll) startScroll = cm.getScrollInfo(); | |
330 var newTop = top + startScroll.top - curScroll.top; | |
331 var point = newTop - (parentWindow.pageYOffset || (ownerDocument.documentElement || ownerDocument.body).scrollTop); | |
332 if (!below) point += hints.offsetHeight; | |
333 if (point <= editor.top || point >= editor.bottom) return completion.close(); | |
334 hints.style.top = newTop + "px"; | |
335 hints.style.left = (left + startScroll.left - curScroll.left) + "px"; | |
336 }); | |
337 | |
338 CodeMirror.on(hints, "dblclick", function(e) { | |
339 var t = getHintElement(hints, e.target || e.srcElement); | |
340 if (t && t.hintId != null) {widget.changeActive(t.hintId); widget.pick();} | |
341 }); | |
342 | |
343 CodeMirror.on(hints, "click", function(e) { | |
344 var t = getHintElement(hints, e.target || e.srcElement); | |
345 if (t && t.hintId != null) { | |
346 widget.changeActive(t.hintId); | |
347 if (completion.options.completeOnSingleClick) widget.pick(); | |
348 } | |
349 }); | |
350 | |
351 CodeMirror.on(hints, "mousedown", function() { | |
352 setTimeout(function(){cm.focus();}, 20); | |
353 }); | |
354 | |
355 // The first hint doesn't need to be scrolled to on init | |
356 var selectedHintRange = this.getSelectedHintRange(); | |
357 if (selectedHintRange.from !== 0 || selectedHintRange.to !== 0) { | |
358 this.scrollToActive(); | |
359 } | |
360 | |
361 CodeMirror.signal(data, "select", completions[this.selectedHint], hints.childNodes[this.selectedHint]); | |
362 return true; | |
363 } | |
364 | |
365 Widget.prototype = { | |
366 close: function() { | |
367 if (this.completion.widget != this) return; | |
368 this.completion.widget = null; | |
369 if (this.hints.parentNode) this.hints.parentNode.removeChild(this.hints); | |
370 this.completion.cm.removeKeyMap(this.keyMap); | |
371 var input = this.completion.cm.getInputField() | |
372 input.removeAttribute("aria-activedescendant") | |
373 input.removeAttribute("aria-owns") | |
374 | |
375 var cm = this.completion.cm; | |
376 if (this.completion.options.closeOnUnfocus) { | |
377 cm.off("blur", this.onBlur); | |
378 cm.off("focus", this.onFocus); | |
379 } | |
380 cm.off("scroll", this.onScroll); | |
381 }, | |
382 | |
383 disable: function() { | |
384 this.completion.cm.removeKeyMap(this.keyMap); | |
385 var widget = this; | |
386 this.keyMap = {Enter: function() { widget.picked = true; }}; | |
387 this.completion.cm.addKeyMap(this.keyMap); | |
388 }, | |
389 | |
390 pick: function() { | |
391 this.completion.pick(this.data, this.selectedHint); | |
392 }, | |
393 | |
394 changeActive: function(i, avoidWrap) { | |
395 if (i >= this.data.list.length) | |
396 i = avoidWrap ? this.data.list.length - 1 : 0; | |
397 else if (i < 0) | |
398 i = avoidWrap ? 0 : this.data.list.length - 1; | |
399 if (this.selectedHint == i) return; | |
400 var node = this.hints.childNodes[this.selectedHint]; | |
401 if (node) { | |
402 node.className = node.className.replace(" " + ACTIVE_HINT_ELEMENT_CLASS, ""); | |
403 node.removeAttribute("aria-selected") | |
404 } | |
405 node = this.hints.childNodes[this.selectedHint = i]; | |
406 node.className += " " + ACTIVE_HINT_ELEMENT_CLASS; | |
407 node.setAttribute("aria-selected", "true") | |
408 this.completion.cm.getInputField().setAttribute("aria-activedescendant", node.id) | |
409 this.scrollToActive() | |
410 CodeMirror.signal(this.data, "select", this.data.list[this.selectedHint], node); | |
411 }, | |
412 | |
413 scrollToActive: function() { | |
414 var selectedHintRange = this.getSelectedHintRange(); | |
415 var node1 = this.hints.childNodes[selectedHintRange.from]; | |
416 var node2 = this.hints.childNodes[selectedHintRange.to]; | |
417 var firstNode = this.hints.firstChild; | |
418 if (node1.offsetTop < this.hints.scrollTop) | |
419 this.hints.scrollTop = node1.offsetTop - firstNode.offsetTop; | |
420 else if (node2.offsetTop + node2.offsetHeight > this.hints.scrollTop + this.hints.clientHeight) | |
421 this.hints.scrollTop = node2.offsetTop + node2.offsetHeight - this.hints.clientHeight + firstNode.offsetTop; | |
422 }, | |
423 | |
424 screenAmount: function() { | |
425 return Math.floor(this.hints.clientHeight / this.hints.firstChild.offsetHeight) || 1; | |
426 }, | |
427 | |
428 getSelectedHintRange: function() { | |
429 var margin = this.completion.options.scrollMargin || 0; | |
430 return { | |
431 from: Math.max(0, this.selectedHint - margin), | |
432 to: Math.min(this.data.list.length - 1, this.selectedHint + margin), | |
433 }; | |
434 } | |
435 }; | |
436 | |
437 function applicableHelpers(cm, helpers) { | |
438 if (!cm.somethingSelected()) return helpers | |
439 var result = [] | |
440 for (var i = 0; i < helpers.length; i++) | |
441 if (helpers[i].supportsSelection) result.push(helpers[i]) | |
442 return result | |
443 } | |
444 | |
445 function fetchHints(hint, cm, options, callback) { | |
446 if (hint.async) { | |
447 hint(cm, callback, options) | |
448 } else { | |
449 var result = hint(cm, options) | |
450 if (result && result.then) result.then(callback) | |
451 else callback(result) | |
452 } | |
453 } | |
454 | |
455 function resolveAutoHints(cm, pos) { | |
456 var helpers = cm.getHelpers(pos, "hint"), words | |
457 if (helpers.length) { | |
458 var resolved = function(cm, callback, options) { | |
459 var app = applicableHelpers(cm, helpers); | |
460 function run(i) { | |
461 if (i == app.length) return callback(null) | |
462 fetchHints(app[i], cm, options, function(result) { | |
463 if (result && result.list.length > 0) callback(result) | |
464 else run(i + 1) | |
465 }) | |
466 } | |
467 run(0) | |
468 } | |
469 resolved.async = true | |
470 resolved.supportsSelection = true | |
471 return resolved | |
472 } else if (words = cm.getHelper(cm.getCursor(), "hintWords")) { | |
473 return function(cm) { return CodeMirror.hint.fromList(cm, {words: words}) } | |
474 } else if (CodeMirror.hint.anyword) { | |
475 return function(cm, options) { return CodeMirror.hint.anyword(cm, options) } | |
476 } else { | |
477 return function() {} | |
478 } | |
479 } | |
480 | |
481 CodeMirror.registerHelper("hint", "auto", { | |
482 resolve: resolveAutoHints | |
483 }); | |
484 | |
485 CodeMirror.registerHelper("hint", "fromList", function(cm, options) { | |
486 var cur = cm.getCursor(), token = cm.getTokenAt(cur) | |
487 var term, from = CodeMirror.Pos(cur.line, token.start), to = cur | |
488 if (token.start < cur.ch && /\w/.test(token.string.charAt(cur.ch - token.start - 1))) { | |
489 term = token.string.substr(0, cur.ch - token.start) | |
490 } else { | |
491 term = "" | |
492 from = cur | |
493 } | |
494 var found = []; | |
495 for (var i = 0; i < options.words.length; i++) { | |
496 var word = options.words[i]; | |
497 if (word.slice(0, term.length) == term) | |
498 found.push(word); | |
499 } | |
500 | |
501 if (found.length) return {list: found, from: from, to: to}; | |
502 }); | |
503 | |
504 CodeMirror.commands.autocomplete = CodeMirror.showHint; | |
505 | |
506 var defaultOptions = { | |
507 hint: CodeMirror.hint.auto, | |
508 completeSingle: true, | |
509 alignWithWord: true, | |
510 closeCharacters: /[\s()\[\]{};:>,]/, | |
511 closeOnPick: true, | |
512 closeOnUnfocus: true, | |
513 updateOnCursorActivity: true, | |
514 completeOnSingleClick: true, | |
515 container: null, | |
516 customKeys: null, | |
517 extraKeys: null, | |
518 paddingForScrollbar: true, | |
519 moveOnOverlap: true, | |
520 }; | |
521 | |
522 CodeMirror.defineOption("hintOptions", null); | |
523 }); |