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| 722af2 | 1 | // CodeMirror, copyright (c) by Marijn Haverbeke and others |
| X | 2 | // Distributed under an MIT license: https://codemirror.net/LICENSE |
| 3 | ||
| 4 | (function(mod) { | |
| 5 | if (typeof exports == "object" && typeof module == "object") // CommonJS | |
| 6 | mod(require("../../lib/codemirror")); | |
| 7 | else if (typeof define == "function" && define.amd) // AMD | |
| 8 | define(["../../lib/codemirror"], mod); | |
| 9 | else // Plain browser env | |
| 10 | mod(CodeMirror); | |
| 11 | })(function(CodeMirror) { | |
| 12 | "use strict"; | |
| 13 | ||
| 14 | var HINT_ELEMENT_CLASS = "CodeMirror-hint"; | |
| 15 | var ACTIVE_HINT_ELEMENT_CLASS = "CodeMirror-hint-active"; | |
| 16 | ||
| 17 | // This is the old interface, kept around for now to stay | |
| 18 | // backwards-compatible. | |
| 19 | CodeMirror.showHint = function(cm, getHints, options) { | |
| 20 | if (!getHints) return cm.showHint(options); | |
| 21 | if (options && options.async) getHints.async = true; | |
| 22 | var newOpts = {hint: getHints}; | |
| 23 | if (options) for (var prop in options) newOpts[prop] = options[prop]; | |
| 24 | return cm.showHint(newOpts); | |
| 25 | }; | |
| 26 | ||
| 27 | CodeMirror.defineExtension("showHint", function(options) { | |
| 28 | options = parseOptions(this, this.getCursor("start"), options); | |
| 29 | var selections = this.listSelections() | |
| 30 | if (selections.length > 1) return; | |
| 31 | // By default, don't allow completion when something is selected. | |
| 32 | // A hint function can have a `supportsSelection` property to | |
| 33 | // indicate that it can handle selections. | |
| 34 | if (this.somethingSelected()) { | |
| 35 | if (!options.hint.supportsSelection) return; | |
| 36 | // Don't try with cross-line selections | |
| 37 | for (var i = 0; i < selections.length; i++) | |
| 38 | if (selections[i].head.line != selections[i].anchor.line) return; | |
| 39 | } | |
| 40 | ||
| 41 | if (this.state.completionActive) this.state.completionActive.close(); | |
| 42 | var completion = this.state.completionActive = new Completion(this, options); | |
| 43 | if (!completion.options.hint) return; | |
| 44 | ||
| 45 | CodeMirror.signal(this, "startCompletion", this); | |
| 46 | completion.update(true); | |
| 47 | }); | |
| 48 | ||
| 49 | function Completion(cm, options) { | |
| 50 | this.cm = cm; | |
| 51 | this.options = options; | |
| 52 | this.widget = null; | |
| 53 | this.debounce = 0; | |
| 54 | this.tick = 0; | |
| 55 | this.startPos = this.cm.getCursor("start"); | |
| 56 | this.startLen = this.cm.getLine(this.startPos.line).length - this.cm.getSelection().length; | |
| 57 | ||
| 58 | var self = this; | |
| 59 | cm.on("cursorActivity", this.activityFunc = function() { self.cursorActivity(); }); | |
| 60 | } | |
| 61 | ||
| 62 | var requestAnimationFrame = window.requestAnimationFrame || function(fn) { | |
| 63 | return setTimeout(fn, 1000/60); | |
| 64 | }; | |
| 65 | var cancelAnimationFrame = window.cancelAnimationFrame || clearTimeout; | |
| 66 | ||
| 67 | Completion.prototype = { | |
| 68 | close: function() { | |
| 69 | if (!this.active()) return; | |
| 70 | this.cm.state.completionActive = null; | |
| 71 | this.tick = null; | |
| 72 | this.cm.off("cursorActivity", this.activityFunc); | |
| 73 | ||
| 74 | if (this.widget && this.data) CodeMirror.signal(this.data, "close"); | |
| 75 | if (this.widget) this.widget.close(); | |
| 76 | CodeMirror.signal(this.cm, "endCompletion", this.cm); | |
| 77 | }, | |
| 78 | ||
| 79 | active: function() { | |
| 80 | return this.cm.state.completionActive == this; | |
| 81 | }, | |
| 82 | ||
| 83 | pick: function(data, i) { | |
| 84 | var completion = data.list[i]; | |
| 85 | if (completion.hint) completion.hint(this.cm, data, completion); | |
| 86 | else this.cm.replaceRange(getText(completion), completion.from || data.from, | |
| 87 | completion.to || data.to, "complete"); | |
| 88 | CodeMirror.signal(data, "pick", completion); | |
| 89 | this.close(); | |
| 90 | }, | |
| 91 | ||
| 92 | cursorActivity: function() { | |
| 93 | if (this.debounce) { | |
| 94 | cancelAnimationFrame(this.debounce); | |
| 95 | this.debounce = 0; | |
| 96 | } | |
| 97 | ||
| 98 | var pos = this.cm.getCursor(), line = this.cm.getLine(pos.line); | |
| 99 | if (pos.line != this.startPos.line || line.length - pos.ch != this.startLen - this.startPos.ch || | |
| 100 | pos.ch < this.startPos.ch || this.cm.somethingSelected() || | |
| 101 | (!pos.ch || this.options.closeCharacters.test(line.charAt(pos.ch - 1)))) { | |
| 102 | this.close(); | |
| 103 | } else { | |
| 104 | var self = this; | |
| 105 | this.debounce = requestAnimationFrame(function() {self.update();}); | |
| 106 | if (this.widget) this.widget.disable(); | |
| 107 | } | |
| 108 | }, | |
| 109 | ||
| 110 | update: function(first) { | |
| 111 | if (this.tick == null) return | |
| 112 | var self = this, myTick = ++this.tick | |
| 113 | fetchHints(this.options.hint, this.cm, this.options, function(data) { | |
| 114 | if (self.tick == myTick) self.finishUpdate(data, first) | |
| 115 | }) | |
| 116 | }, | |
| 117 | ||
| 118 | finishUpdate: function(data, first) { | |
| 119 | if (this.data) CodeMirror.signal(this.data, "update"); | |
| 120 | ||
| 121 | var picked = (this.widget && this.widget.picked) || (first && this.options.completeSingle); | |
| 122 | if (this.widget) this.widget.close(); | |
| 123 | ||
| 124 | this.data = data; | |
| 125 | ||
| 126 | if (data && data.list.length) { | |
| 127 | if (picked && data.list.length == 1) { | |
| 128 | this.pick(data, 0); | |
| 129 | } else { | |
| 130 | this.widget = new Widget(this, data); | |
| 131 | CodeMirror.signal(data, "shown"); | |
| 132 | } | |
| 133 | } | |
| 134 | } | |
| 135 | }; | |
| 136 | ||
| 137 | function parseOptions(cm, pos, options) { | |
| 138 | var editor = cm.options.hintOptions; | |
| 139 | var out = {}; | |
| 140 | for (var prop in defaultOptions) out[prop] = defaultOptions[prop]; | |
| 141 | if (editor) for (var prop in editor) | |
| 142 | if (editor[prop] !== undefined) out[prop] = editor[prop]; | |
| 143 | if (options) for (var prop in options) | |
| 144 | if (options[prop] !== undefined) out[prop] = options[prop]; | |
| 145 | if (out.hint.resolve) out.hint = out.hint.resolve(cm, pos) | |
| 146 | return out; | |
| 147 | } | |
| 148 | ||
| 149 | function getText(completion) { | |
| 150 | if (typeof completion == "string") return completion; | |
| 151 | else return completion.text; | |
| 152 | } | |
| 153 | ||
| 154 | function buildKeyMap(completion, handle) { | |
| 155 | var baseMap = { | |
| 156 | Up: function() {handle.moveFocus(-1);}, | |
| 157 | Down: function() {handle.moveFocus(1);}, | |
| 158 | PageUp: function() {handle.moveFocus(-handle.menuSize() + 1, true);}, | |
| 159 | PageDown: function() {handle.moveFocus(handle.menuSize() - 1, true);}, | |
| 160 | Home: function() {handle.setFocus(0);}, | |
| 161 | End: function() {handle.setFocus(handle.length - 1);}, | |
| 162 | Enter: handle.pick, | |
| 163 | Tab: handle.pick, | |
| 164 | Esc: handle.close | |
| 165 | }; | |
| 166 | var custom = completion.options.customKeys; | |
| 167 | var ourMap = custom ? {} : baseMap; | |
| 168 | function addBinding(key, val) { | |
| 169 | var bound; | |
| 170 | if (typeof val != "string") | |
| 171 | bound = function(cm) { return val(cm, handle); }; | |
| 172 | // This mechanism is deprecated | |
| 173 | else if (baseMap.hasOwnProperty(val)) | |
| 174 | bound = baseMap[val]; | |
| 175 | else | |
| 176 | bound = val; | |
| 177 | ourMap[key] = bound; | |
| 178 | } | |
| 179 | if (custom) | |
| 180 | for (var key in custom) if (custom.hasOwnProperty(key)) | |
| 181 | addBinding(key, custom[key]); | |
| 182 | var extra = completion.options.extraKeys; | |
| 183 | if (extra) | |
| 184 | for (var key in extra) if (extra.hasOwnProperty(key)) | |
| 185 | addBinding(key, extra[key]); | |
| 186 | return ourMap; | |
| 187 | } | |
| 188 | ||
| 189 | function getHintElement(hintsElement, el) { | |
| 190 | while (el && el != hintsElement) { | |
| 191 | if (el.nodeName.toUpperCase() === "LI" && el.parentNode == hintsElement) return el; | |
| 192 | el = el.parentNode; | |
| 193 | } | |
| 194 | } | |
| 195 | ||
| 196 | function Widget(completion, data) { | |
| 197 | this.completion = completion; | |
| 198 | this.data = data; | |
| 199 | this.picked = false; | |
| 200 | var widget = this, cm = completion.cm; | |
| 201 | ||
| 202 | var hints = this.hints = document.createElement("ul"); | |
| 203 | var theme = completion.cm.options.theme; | |
| 204 | hints.className = "CodeMirror-hints " + theme; | |
| 205 | this.selectedHint = data.selectedHint || 0; | |
| 206 | ||
| 207 | var completions = data.list; | |
| 208 | for (var i = 0; i < completions.length; ++i) { | |
| 209 | var elt = hints.appendChild(document.createElement("li")), cur = completions[i]; | |
| 210 | var className = HINT_ELEMENT_CLASS + (i != this.selectedHint ? "" : " " + ACTIVE_HINT_ELEMENT_CLASS); | |
| 211 | if (cur.className != null) className = cur.className + " " + className; | |
| 212 | elt.className = className; | |
| 213 | if (cur.render) cur.render(elt, data, cur); | |
| 214 | else elt.appendChild(document.createTextNode(cur.displayText || getText(cur))); | |
| 215 | elt.hintId = i; | |
| 216 | } | |
| 217 | ||
| 218 | var pos = cm.cursorCoords(completion.options.alignWithWord ? data.from : null); | |
| 219 | var left = pos.left, top = pos.bottom, below = true; | |
| 220 | hints.style.left = left + "px"; | |
| 221 | hints.style.top = top + "px"; | |
| 222 | // If we're at the edge of the screen, then we want the menu to appear on the left of the cursor. | |
| 223 | var winW = window.innerWidth || Math.max(document.body.offsetWidth, document.documentElement.offsetWidth); | |
| 224 | var winH = window.innerHeight || Math.max(document.body.offsetHeight, document.documentElement.offsetHeight); | |
| 225 | (completion.options.container || document.body).appendChild(hints); | |
| 226 | var box = hints.getBoundingClientRect(), overlapY = box.bottom - winH; | |
| 227 | var scrolls = hints.scrollHeight > hints.clientHeight + 1 | |
| 228 | var startScroll = cm.getScrollInfo(); | |
| 229 | ||
| 230 | if (overlapY > 0) { | |
| 231 | var height = box.bottom - box.top, curTop = pos.top - (pos.bottom - box.top); | |
| 232 | if (curTop - height > 0) { // Fits above cursor | |
| 233 | hints.style.top = (top = pos.top - height) + "px"; | |
| 234 | below = false; | |
| 235 | } else if (height > winH) { | |
| 236 | hints.style.height = (winH - 5) + "px"; | |
| 237 | hints.style.top = (top = pos.bottom - box.top) + "px"; | |
| 238 | var cursor = cm.getCursor(); | |
| 239 | if (data.from.ch != cursor.ch) { | |
| 240 | pos = cm.cursorCoords(cursor); | |
| 241 | hints.style.left = (left = pos.left) + "px"; | |
| 242 | box = hints.getBoundingClientRect(); | |
| 243 | } | |
| 244 | } | |
| 245 | } | |
| 246 | var overlapX = box.right - winW; | |
| 247 | if (overlapX > 0) { | |
| 248 | if (box.right - box.left > winW) { | |
| 249 | hints.style.width = (winW - 5) + "px"; | |
| 250 | overlapX -= (box.right - box.left) - winW; | |
| 251 | } | |
| 252 | hints.style.left = (left = pos.left - overlapX) + "px"; | |
| 253 | } | |
| 254 | if (scrolls) for (var node = hints.firstChild; node; node = node.nextSibling) | |
| 255 | node.style.paddingRight = cm.display.nativeBarWidth + "px" | |
| 256 | ||
| 257 | cm.addKeyMap(this.keyMap = buildKeyMap(completion, { | |
| 258 | moveFocus: function(n, avoidWrap) { widget.changeActive(widget.selectedHint + n, avoidWrap); }, | |
| 259 | setFocus: function(n) { widget.changeActive(n); }, | |
| 260 | menuSize: function() { return widget.screenAmount(); }, | |
| 261 | length: completions.length, | |
| 262 | close: function() { completion.close(); }, | |
| 263 | pick: function() { widget.pick(); }, | |
| 264 | data: data | |
| 265 | })); | |
| 266 | ||
| 267 | if (completion.options.closeOnUnfocus) { | |
| 268 | var closingOnBlur; | |
| 269 | cm.on("blur", this.onBlur = function() { closingOnBlur = setTimeout(function() { completion.close(); }, 100); }); | |
| 270 | cm.on("focus", this.onFocus = function() { clearTimeout(closingOnBlur); }); | |
| 271 | } | |
| 272 | ||
| 273 | cm.on("scroll", this.onScroll = function() { | |
| 274 | var curScroll = cm.getScrollInfo(), editor = cm.getWrapperElement().getBoundingClientRect(); | |
| 275 | var newTop = top + startScroll.top - curScroll.top; | |
| 276 | var point = newTop - (window.pageYOffset || (document.documentElement || document.body).scrollTop); | |
| 277 | if (!below) point += hints.offsetHeight; | |
| 278 | if (point <= editor.top || point >= editor.bottom) return completion.close(); | |
| 279 | hints.style.top = newTop + "px"; | |
| 280 | hints.style.left = (left + startScroll.left - curScroll.left) + "px"; | |
| 281 | }); | |
| 282 | ||
| 283 | CodeMirror.on(hints, "dblclick", function(e) { | |
| 284 | var t = getHintElement(hints, e.target || e.srcElement); | |
| 285 | if (t && t.hintId != null) {widget.changeActive(t.hintId); widget.pick();} | |
| 286 | }); | |
| 287 | ||
| 288 | CodeMirror.on(hints, "click", function(e) { | |
| 289 | var t = getHintElement(hints, e.target || e.srcElement); | |
| 290 | if (t && t.hintId != null) { | |
| 291 | widget.changeActive(t.hintId); | |
| 292 | if (completion.options.completeOnSingleClick) widget.pick(); | |
| 293 | } | |
| 294 | }); | |
| 295 | ||
| 296 | CodeMirror.on(hints, "mousedown", function() { | |
| 297 | setTimeout(function(){cm.focus();}, 20); | |
| 298 | }); | |
| 299 | ||
| 300 | CodeMirror.signal(data, "select", completions[this.selectedHint], hints.childNodes[this.selectedHint]); | |
| 301 | return true; | |
| 302 | } | |
| 303 | ||
| 304 | Widget.prototype = { | |
| 305 | close: function() { | |
| 306 | if (this.completion.widget != this) return; | |
| 307 | this.completion.widget = null; | |
| 308 | this.hints.parentNode.removeChild(this.hints); | |
| 309 | this.completion.cm.removeKeyMap(this.keyMap); | |
| 310 | ||
| 311 | var cm = this.completion.cm; | |
| 312 | if (this.completion.options.closeOnUnfocus) { | |
| 313 | cm.off("blur", this.onBlur); | |
| 314 | cm.off("focus", this.onFocus); | |
| 315 | } | |
| 316 | cm.off("scroll", this.onScroll); | |
| 317 | }, | |
| 318 | ||
| 319 | disable: function() { | |
| 320 | this.completion.cm.removeKeyMap(this.keyMap); | |
| 321 | var widget = this; | |
| 322 | this.keyMap = {Enter: function() { widget.picked = true; }}; | |
| 323 | this.completion.cm.addKeyMap(this.keyMap); | |
| 324 | }, | |
| 325 | ||
| 326 | pick: function() { | |
| 327 | this.completion.pick(this.data, this.selectedHint); | |
| 328 | }, | |
| 329 | ||
| 330 | changeActive: function(i, avoidWrap) { | |
| 331 | if (i >= this.data.list.length) | |
| 332 | i = avoidWrap ? this.data.list.length - 1 : 0; | |
| 333 | else if (i < 0) | |
| 334 | i = avoidWrap ? 0 : this.data.list.length - 1; | |
| 335 | if (this.selectedHint == i) return; | |
| 336 | var node = this.hints.childNodes[this.selectedHint]; | |
| 337 | if (node) node.className = node.className.replace(" " + ACTIVE_HINT_ELEMENT_CLASS, ""); | |
| 338 | node = this.hints.childNodes[this.selectedHint = i]; | |
| 339 | node.className += " " + ACTIVE_HINT_ELEMENT_CLASS; | |
| 340 | if (node.offsetTop < this.hints.scrollTop) | |
| 341 | this.hints.scrollTop = node.offsetTop - 3; | |
| 342 | else if (node.offsetTop + node.offsetHeight > this.hints.scrollTop + this.hints.clientHeight) | |
| 343 | this.hints.scrollTop = node.offsetTop + node.offsetHeight - this.hints.clientHeight + 3; | |
| 344 | CodeMirror.signal(this.data, "select", this.data.list[this.selectedHint], node); | |
| 345 | }, | |
| 346 | ||
| 347 | screenAmount: function() { | |
| 348 | return Math.floor(this.hints.clientHeight / this.hints.firstChild.offsetHeight) || 1; | |
| 349 | } | |
| 350 | }; | |
| 351 | ||
| 352 | function applicableHelpers(cm, helpers) { | |
| 353 | if (!cm.somethingSelected()) return helpers | |
| 354 | var result = [] | |
| 355 | for (var i = 0; i < helpers.length; i++) | |
| 356 | if (helpers[i].supportsSelection) result.push(helpers[i]) | |
| 357 | return result | |
| 358 | } | |
| 359 | ||
| 360 | function fetchHints(hint, cm, options, callback) { | |
| 361 | if (hint.async) { | |
| 362 | hint(cm, callback, options) | |
| 363 | } else { | |
| 364 | var result = hint(cm, options) | |
| 365 | if (result && result.then) result.then(callback) | |
| 366 | else callback(result) | |
| 367 | } | |
| 368 | } | |
| 369 | ||
| 370 | function resolveAutoHints(cm, pos) { | |
| 371 | var helpers = cm.getHelpers(pos, "hint"), words | |
| 372 | if (helpers.length) { | |
| 373 | var resolved = function(cm, callback, options) { | |
| 374 | var app = applicableHelpers(cm, helpers); | |
| 375 | function run(i) { | |
| 376 | if (i == app.length) return callback(null) | |
| 377 | fetchHints(app[i], cm, options, function(result) { | |
| 378 | if (result && result.list.length > 0) callback(result) | |
| 379 | else run(i + 1) | |
| 380 | }) | |
| 381 | } | |
| 382 | run(0) | |
| 383 | } | |
| 384 | resolved.async = true | |
| 385 | resolved.supportsSelection = true | |
| 386 | return resolved | |
| 387 | } else if (words = cm.getHelper(cm.getCursor(), "hintWords")) { | |
| 388 | return function(cm) { return CodeMirror.hint.fromList(cm, {words: words}) } | |
| 389 | } else if (CodeMirror.hint.anyword) { | |
| 390 | return function(cm, options) { return CodeMirror.hint.anyword(cm, options) } | |
| 391 | } else { | |
| 392 | return function() {} | |
| 393 | } | |
| 394 | } | |
| 395 | ||
| 396 | CodeMirror.registerHelper("hint", "auto", { | |
| 397 | resolve: resolveAutoHints | |
| 398 | }); | |
| 399 | ||
| 400 | CodeMirror.registerHelper("hint", "fromList", function(cm, options) { | |
| 401 | var cur = cm.getCursor(), token = cm.getTokenAt(cur) | |
| 402 | var term, from = CodeMirror.Pos(cur.line, token.start), to = cur | |
| 403 | if (token.start < cur.ch && /\w/.test(token.string.charAt(cur.ch - token.start - 1))) { | |
| 404 | term = token.string.substr(0, cur.ch - token.start) | |
| 405 | } else { | |
| 406 | term = "" | |
| 407 | from = cur | |
| 408 | } | |
| 409 | var found = []; | |
| 410 | for (var i = 0; i < options.words.length; i++) { | |
| 411 | var word = options.words[i]; | |
| 412 | if (word.slice(0, term.length) == term) | |
| 413 | found.push(word); | |
| 414 | } | |
| 415 | ||
| 416 | if (found.length) return {list: found, from: from, to: to}; | |
| 417 | }); | |
| 418 | ||
| 419 | CodeMirror.commands.autocomplete = CodeMirror.showHint; | |
| 420 | ||
| 421 | var defaultOptions = { | |
| 422 | hint: CodeMirror.hint.auto, | |
| 423 | completeSingle: true, | |
| 424 | alignWithWord: true, | |
| 425 | closeCharacters: /[\s()\[\]{};:>,]/, | |
| 426 | closeOnUnfocus: true, | |
| 427 | completeOnSingleClick: true, | |
| 428 | container: null, | |
| 429 | customKeys: null, | |
| 430 | extraKeys: null | |
| 431 | }; | |
| 432 | ||
| 433 | CodeMirror.defineOption("hintOptions", null); | |
| 434 | }); | |
