diff options
| author | hukl <hukl@eight.local> | 2009-01-29 20:41:18 +0100 |
|---|---|---|
| committer | hukl <hukl@eight.local> | 2009-01-29 20:41:18 +0100 |
| commit | b298d3e8eeb10903bd4640dab7c11d0dc1be9d38 (patch) | |
| tree | d8d0a8449972a46e551be3b94e7dd02b6107b119 /public/javascripts/controls.js | |
initial import with edge rails included as a submodule
Diffstat (limited to 'public/javascripts/controls.js')
| -rw-r--r-- | public/javascripts/controls.js | 963 |
1 files changed, 963 insertions, 0 deletions
diff --git a/public/javascripts/controls.js b/public/javascripts/controls.js new file mode 100644 index 0000000..ca29aef --- /dev/null +++ b/public/javascripts/controls.js | |||
| @@ -0,0 +1,963 @@ | |||
| 1 | // Copyright (c) 2005-2008 Thomas Fuchs (http://script.aculo.us, http://mir.aculo.us) | ||
| 2 | // (c) 2005-2008 Ivan Krstic (http://blogs.law.harvard.edu/ivan) | ||
| 3 | // (c) 2005-2008 Jon Tirsen (http://www.tirsen.com) | ||
| 4 | // Contributors: | ||
| 5 | // Richard Livsey | ||
| 6 | // Rahul Bhargava | ||
| 7 | // Rob Wills | ||
| 8 | // | ||
| 9 | // script.aculo.us is freely distributable under the terms of an MIT-style license. | ||
| 10 | // For details, see the script.aculo.us web site: http://script.aculo.us/ | ||
| 11 | |||
| 12 | // Autocompleter.Base handles all the autocompletion functionality | ||
| 13 | // that's independent of the data source for autocompletion. This | ||
| 14 | // includes drawing the autocompletion menu, observing keyboard | ||
| 15 | // and mouse events, and similar. | ||
| 16 | // | ||
| 17 | // Specific autocompleters need to provide, at the very least, | ||
| 18 | // a getUpdatedChoices function that will be invoked every time | ||
| 19 | // the text inside the monitored textbox changes. This method | ||
| 20 | // should get the text for which to provide autocompletion by | ||
| 21 | // invoking this.getToken(), NOT by directly accessing | ||
| 22 | // this.element.value. This is to allow incremental tokenized | ||
| 23 | // autocompletion. Specific auto-completion logic (AJAX, etc) | ||
| 24 | // belongs in getUpdatedChoices. | ||
| 25 | // | ||
| 26 | // Tokenized incremental autocompletion is enabled automatically | ||
| 27 | // when an autocompleter is instantiated with the 'tokens' option | ||
| 28 | // in the options parameter, e.g.: | ||
| 29 | // new Ajax.Autocompleter('id','upd', '/url/', { tokens: ',' }); | ||
| 30 | // will incrementally autocomplete with a comma as the token. | ||
| 31 | // Additionally, ',' in the above example can be replaced with | ||
| 32 | // a token array, e.g. { tokens: [',', '\n'] } which | ||
| 33 | // enables autocompletion on multiple tokens. This is most | ||
| 34 | // useful when one of the tokens is \n (a newline), as it | ||
| 35 | // allows smart autocompletion after linebreaks. | ||
| 36 | |||
| 37 | if(typeof Effect == 'undefined') | ||
| 38 | throw("controls.js requires including script.aculo.us' effects.js library"); | ||
| 39 | |||
| 40 | var Autocompleter = { }; | ||
| 41 | Autocompleter.Base = Class.create({ | ||
| 42 | baseInitialize: function(element, update, options) { | ||
| 43 | element = $(element); | ||
| 44 | this.element = element; | ||
| 45 | this.update = $(update); | ||
| 46 | this.hasFocus = false; | ||
| 47 | this.changed = false; | ||
| 48 | this.active = false; | ||
| 49 | this.index = 0; | ||
| 50 | this.entryCount = 0; | ||
| 51 | this.oldElementValue = this.element.value; | ||
| 52 | |||
| 53 | if(this.setOptions) | ||
| 54 | this.setOptions(options); | ||
| 55 | else | ||
| 56 | this.options = options || { }; | ||
| 57 | |||
| 58 | this.options.paramName = this.options.paramName || this.element.name; | ||
| 59 | this.options.tokens = this.options.tokens || []; | ||
| 60 | this.options.frequency = this.options.frequency || 0.4; | ||
| 61 | this.options.minChars = this.options.minChars || 1; | ||
| 62 | this.options.onShow = this.options.onShow || | ||
| 63 | function(element, update){ | ||
| 64 | if(!update.style.position || update.style.position=='absolute') { | ||
| 65 | update.style.position = 'absolute'; | ||
| 66 | Position.clone(element, update, { | ||
| 67 | setHeight: false, | ||
| 68 | offsetTop: element.offsetHeight | ||
| 69 | }); | ||
| 70 | } | ||
| 71 | Effect.Appear(update,{duration:0.15}); | ||
| 72 | }; | ||
| 73 | this.options.onHide = this.options.onHide || | ||
| 74 | function(element, update){ new Effect.Fade(update,{duration:0.15}) }; | ||
| 75 | |||
| 76 | if(typeof(this.options.tokens) == 'string') | ||
| 77 | this.options.tokens = new Array(this.options.tokens); | ||
| 78 | // Force carriage returns as token delimiters anyway | ||
| 79 | if (!this.options.tokens.include('\n')) | ||
| 80 | this.options.tokens.push('\n'); | ||
| 81 | |||
| 82 | this.observer = null; | ||
| 83 | |||
| 84 | this.element.setAttribute('autocomplete','off'); | ||
| 85 | |||
| 86 | Element.hide(this.update); | ||
| 87 | |||
| 88 | Event.observe(this.element, 'blur', this.onBlur.bindAsEventListener(this)); | ||
| 89 | Event.observe(this.element, 'keydown', this.onKeyPress.bindAsEventListener(this)); | ||
| 90 | }, | ||
| 91 | |||
| 92 | show: function() { | ||
| 93 | if(Element.getStyle(this.update, 'display')=='none') this.options.onShow(this.element, this.update); | ||
| 94 | if(!this.iefix && | ||
| 95 | (Prototype.Browser.IE) && | ||
| 96 | (Element.getStyle(this.update, 'position')=='absolute')) { | ||
| 97 | new Insertion.After(this.update, | ||
| 98 | '<iframe id="' + this.update.id + '_iefix" '+ | ||
| 99 | 'style="display:none;position:absolute;filter:progid:DXImageTransform.Microsoft.Alpha(opacity=0);" ' + | ||
| 100 | 'src="javascript:false;" frameborder="0" scrolling="no"></iframe>'); | ||
| 101 | this.iefix = $(this.update.id+'_iefix'); | ||
| 102 | } | ||
| 103 | if(this.iefix) setTimeout(this.fixIEOverlapping.bind(this), 50); | ||
| 104 | }, | ||
| 105 | |||
| 106 | fixIEOverlapping: function() { | ||
| 107 | Position.clone(this.update, this.iefix, {setTop:(!this.update.style.height)}); | ||
| 108 | this.iefix.style.zIndex = 1; | ||
| 109 | this.update.style.zIndex = 2; | ||
| 110 | Element.show(this.iefix); | ||
| 111 | }, | ||
| 112 | |||
| 113 | hide: function() { | ||
| 114 | this.stopIndicator(); | ||
| 115 | if(Element.getStyle(this.update, 'display')!='none') this.options.onHide(this.element, this.update); | ||
| 116 | if(this.iefix) Element.hide(this.iefix); | ||
| 117 | }, | ||
| 118 | |||
| 119 | startIndicator: function() { | ||
| 120 | if(this.options.indicator) Element.show(this.options.indicator); | ||
| 121 | }, | ||
| 122 | |||
| 123 | stopIndicator: function() { | ||
| 124 | if(this.options.indicator) Element.hide(this.options.indicator); | ||
| 125 | }, | ||
| 126 | |||
| 127 | onKeyPress: function(event) { | ||
| 128 | if(this.active) | ||
| 129 | switch(event.keyCode) { | ||
| 130 | case Event.KEY_TAB: | ||
| 131 | case Event.KEY_RETURN: | ||
| 132 | this.selectEntry(); | ||
| 133 | Event.stop(event); | ||
| 134 | case Event.KEY_ESC: | ||
| 135 | this.hide(); | ||
| 136 | this.active = false; | ||
| 137 | Event.stop(event); | ||
| 138 | return; | ||
| 139 | case Event.KEY_LEFT: | ||
| 140 | case Event.KEY_RIGHT: | ||
| 141 | return; | ||
| 142 | case Event.KEY_UP: | ||
| 143 | this.markPrevious(); | ||
| 144 | this.render(); | ||
| 145 | Event.stop(event); | ||
| 146 | return; | ||
| 147 | case Event.KEY_DOWN: | ||
| 148 | this.markNext(); | ||
| 149 | this.render(); | ||
| 150 | Event.stop(event); | ||
| 151 | return; | ||
| 152 | } | ||
| 153 | else | ||
| 154 | if(event.keyCode==Event.KEY_TAB || event.keyCode==Event.KEY_RETURN || | ||
| 155 | (Prototype.Browser.WebKit > 0 && event.keyCode == 0)) return; | ||
| 156 | |||
| 157 | this.changed = true; | ||
| 158 | this.hasFocus = true; | ||
| 159 | |||
| 160 | if(this.observer) clearTimeout(this.observer); | ||
| 161 | this.observer = | ||
| 162 | setTimeout(this.onObserverEvent.bind(this), this.options.frequency*1000); | ||
| 163 | }, | ||
| 164 | |||
| 165 | activate: function() { | ||
| 166 | this.changed = false; | ||
| 167 | this.hasFocus = true; | ||
| 168 | this.getUpdatedChoices(); | ||
| 169 | }, | ||
| 170 | |||
| 171 | onHover: function(event) { | ||
| 172 | var element = Event.findElement(event, 'LI'); | ||
| 173 | if(this.index != element.autocompleteIndex) | ||
| 174 | { | ||
| 175 | this.index = element.autocompleteIndex; | ||
| 176 | this.render(); | ||
| 177 | } | ||
| 178 | Event.stop(event); | ||
| 179 | }, | ||
| 180 | |||
| 181 | onClick: function(event) { | ||
| 182 | var element = Event.findElement(event, 'LI'); | ||
| 183 | this.index = element.autocompleteIndex; | ||
| 184 | this.selectEntry(); | ||
| 185 | this.hide(); | ||
| 186 | }, | ||
| 187 | |||
| 188 | onBlur: function(event) { | ||
| 189 | // needed to make click events working | ||
| 190 | setTimeout(this.hide.bind(this), 250); | ||
| 191 | this.hasFocus = false; | ||
| 192 | this.active = false; | ||
| 193 | }, | ||
| 194 | |||
| 195 | render: function() { | ||
| 196 | if(this.entryCount > 0) { | ||
| 197 | for (var i = 0; i < this.entryCount; i++) | ||
| 198 | this.index==i ? | ||
| 199 | Element.addClassName(this.getEntry(i),"selected") : | ||
| 200 | Element.removeClassName(this.getEntry(i),"selected"); | ||
| 201 | if(this.hasFocus) { | ||
| 202 | this.show(); | ||
| 203 | this.active = true; | ||
| 204 | } | ||
| 205 | } else { | ||
| 206 | this.active = false; | ||
| 207 | this.hide(); | ||
| 208 | } | ||
| 209 | }, | ||
| 210 | |||
| 211 | markPrevious: function() { | ||
| 212 | if(this.index > 0) this.index--; | ||
| 213 | else this.index = this.entryCount-1; | ||
| 214 | this.getEntry(this.index).scrollIntoView(true); | ||
| 215 | }, | ||
| 216 | |||
| 217 | markNext: function() { | ||
| 218 | if(this.index < this.entryCount-1) this.index++; | ||
| 219 | else this.index = 0; | ||
| 220 | this.getEntry(this.index).scrollIntoView(false); | ||
| 221 | }, | ||
| 222 | |||
| 223 | getEntry: function(index) { | ||
| 224 | return this.update.firstChild.childNodes[index]; | ||
| 225 | }, | ||
| 226 | |||
| 227 | getCurrentEntry: function() { | ||
| 228 | return this.getEntry(this.index); | ||
| 229 | }, | ||
| 230 | |||
| 231 | selectEntry: function() { | ||
| 232 | this.active = false; | ||
| 233 | this.updateElement(this.getCurrentEntry()); | ||
| 234 | }, | ||
| 235 | |||
| 236 | updateElement: function(selectedElement) { | ||
| 237 | if (this.options.updateElement) { | ||
| 238 | this.options.updateElement(selectedElement); | ||
| 239 | return; | ||
| 240 | } | ||
| 241 | var value = ''; | ||
| 242 | if (this.options.select) { | ||
| 243 | var nodes = $(selectedElement).select('.' + this.options.select) || []; | ||
| 244 | if(nodes.length>0) value = Element.collectTextNodes(nodes[0], this.options.select); | ||
| 245 | } else | ||
| 246 | value = Element.collectTextNodesIgnoreClass(selectedElement, 'informal'); | ||
| 247 | |||
| 248 | var bounds = this.getTokenBounds(); | ||
| 249 | if (bounds[0] != -1) { | ||
| 250 | var newValue = this.element.value.substr(0, bounds[0]); | ||
| 251 | var whitespace = this.element.value.substr(bounds[0]).match(/^\s+/); | ||
| 252 | if (whitespace) | ||
| 253 | newValue += whitespace[0]; | ||
| 254 | this.element.value = newValue + value + this.element.value.substr(bounds[1]); | ||
| 255 | } else { | ||
| 256 | this.element.value = value; | ||
| 257 | } | ||
| 258 | this.oldElementValue = this.element.value; | ||
| 259 | this.element.focus(); | ||
| 260 | |||
| 261 | if (this.options.afterUpdateElement) | ||
| 262 | this.options.afterUpdateElement(this.element, selectedElement); | ||
| 263 | }, | ||
| 264 | |||
| 265 | updateChoices: function(choices) { | ||
| 266 | if(!this.changed && this.hasFocus) { | ||
| 267 | this.update.innerHTML = choices; | ||
| 268 | Element.cleanWhitespace(this.update); | ||
| 269 | Element.cleanWhitespace(this.update.down()); | ||
| 270 | |||
| 271 | if(this.update.firstChild && this.update.down().childNodes) { | ||
| 272 | this.entryCount = | ||
| 273 | this.update.down().childNodes.length; | ||
| 274 | for (var i = 0; i < this.entryCount; i++) { | ||
| 275 | var entry = this.getEntry(i); | ||
| 276 | entry.autocompleteIndex = i; | ||
| 277 | this.addObservers(entry); | ||
| 278 | } | ||
| 279 | } else { | ||
| 280 | this.entryCount = 0; | ||
| 281 | } | ||
| 282 | |||
| 283 | this.stopIndicator(); | ||
| 284 | this.index = 0; | ||
| 285 | |||
| 286 | if(this.entryCount==1 && this.options.autoSelect) { | ||
| 287 | this.selectEntry(); | ||
| 288 | this.hide(); | ||
| 289 | } else { | ||
| 290 | this.render(); | ||
| 291 | } | ||
| 292 | } | ||
| 293 | }, | ||
| 294 | |||
| 295 | addObservers: function(element) { | ||
| 296 | Event.observe(element, "mouseover", this.onHover.bindAsEventListener(this)); | ||
| 297 | Event.observe(element, "click", this.onClick.bindAsEventListener(this)); | ||
| 298 | }, | ||
| 299 | |||
| 300 | onObserverEvent: function() { | ||
| 301 | this.changed = false; | ||
| 302 | this.tokenBounds = null; | ||
| 303 | if(this.getToken().length>=this.options.minChars) { | ||
| 304 | this.getUpdatedChoices(); | ||
| 305 | } else { | ||
| 306 | this.active = false; | ||
| 307 | this.hide(); | ||
| 308 | } | ||
| 309 | this.oldElementValue = this.element.value; | ||
| 310 | }, | ||
| 311 | |||
| 312 | getToken: function() { | ||
| 313 | var bounds = this.getTokenBounds(); | ||
| 314 | return this.element.value.substring(bounds[0], bounds[1]).strip(); | ||
| 315 | }, | ||
| 316 | |||
| 317 | getTokenBounds: function() { | ||
| 318 | if (null != this.tokenBounds) return this.tokenBounds; | ||
| 319 | var value = this.element.value; | ||
| 320 | if (value.strip().empty()) return [-1, 0]; | ||
| 321 | var diff = arguments.callee.getFirstDifferencePos(value, this.oldElementValue); | ||
| 322 | var offset = (diff == this.oldElementValue.length ? 1 : 0); | ||
| 323 | var prevTokenPos = -1, nextTokenPos = value.length; | ||
| 324 | var tp; | ||
| 325 | for (var index = 0, l = this.options.tokens.length; index < l; ++index) { | ||
| 326 | tp = value.lastIndexOf(this.options.tokens[index], diff + offset - 1); | ||
| 327 | if (tp > prevTokenPos) prevTokenPos = tp; | ||
| 328 | tp = value.indexOf(this.options.tokens[index], diff + offset); | ||
| 329 | if (-1 != tp && tp < nextTokenPos) nextTokenPos = tp; | ||
| 330 | } | ||
| 331 | return (this.tokenBounds = [prevTokenPos + 1, nextTokenPos]); | ||
| 332 | } | ||
| 333 | }); | ||
| 334 | |||
| 335 | Autocompleter.Base.prototype.getTokenBounds.getFirstDifferencePos = function(newS, oldS) { | ||
| 336 | var boundary = Math.min(newS.length, oldS.length); | ||
| 337 | for (var index = 0; index < boundary; ++index) | ||
| 338 | if (newS[index] != oldS[index]) | ||
| 339 | return index; | ||
| 340 | return boundary; | ||
| 341 | }; | ||
| 342 | |||
| 343 | Ajax.Autocompleter = Class.create(Autocompleter.Base, { | ||
| 344 | initialize: function(element, update, url, options) { | ||
| 345 | this.baseInitialize(element, update, options); | ||
| 346 | this.options.asynchronous = true; | ||
| 347 | this.options.onComplete = this.onComplete.bind(this); | ||
| 348 | this.options.defaultParams = this.options.parameters || null; | ||
| 349 | this.url = url; | ||
| 350 | }, | ||
| 351 | |||
| 352 | getUpdatedChoices: function() { | ||
| 353 | this.startIndicator(); | ||
| 354 | |||
| 355 | var entry = encodeURIComponent(this.options.paramName) + '=' + | ||
| 356 | encodeURIComponent(this.getToken()); | ||
| 357 | |||
| 358 | this.options.parameters = this.options.callback ? | ||
| 359 | this.options.callback(this.element, entry) : entry; | ||
| 360 | |||
| 361 | if(this.options.defaultParams) | ||
| 362 | this.options.parameters += '&' + this.options.defaultParams; | ||
| 363 | |||
| 364 | new Ajax.Request(this.url, this.options); | ||
| 365 | }, | ||
| 366 | |||
| 367 | onComplete: function(request) { | ||
| 368 | this.updateChoices(request.responseText); | ||
| 369 | } | ||
| 370 | }); | ||
| 371 | |||
| 372 | // The local array autocompleter. Used when you'd prefer to | ||
| 373 | // inject an array of autocompletion options into the page, rather | ||
| 374 | // than sending out Ajax queries, which can be quite slow sometimes. | ||
| 375 | // | ||
| 376 | // The constructor takes four parameters. The first two are, as usual, | ||
| 377 | // the id of the monitored textbox, and id of the autocompletion menu. | ||
| 378 | // The third is the array you want to autocomplete from, and the fourth | ||
| 379 | // is the options block. | ||
| 380 | // | ||
| 381 | // Extra local autocompletion options: | ||
| 382 | // - choices - How many autocompletion choices to offer | ||
| 383 | // | ||
| 384 | // - partialSearch - If false, the autocompleter will match entered | ||
| 385 | // text only at the beginning of strings in the | ||
| 386 | // autocomplete array. Defaults to true, which will | ||
| 387 | // match text at the beginning of any *word* in the | ||
| 388 | // strings in the autocomplete array. If you want to | ||
| 389 | // search anywhere in the string, additionally set | ||
| 390 | // the option fullSearch to true (default: off). | ||
| 391 | // | ||
| 392 | // - fullSsearch - Search anywhere in autocomplete array strings. | ||
| 393 | // | ||
| 394 | // - partialChars - How many characters to enter before triggering | ||
| 395 | // a partial match (unlike minChars, which defines | ||
| 396 | // how many characters are required to do any match | ||
| 397 | // at all). Defaults to 2. | ||
| 398 | // | ||
| 399 | // - ignoreCase - Whether to ignore case when autocompleting. | ||
| 400 | // Defaults to true. | ||
| 401 | // | ||
| 402 | // It's possible to pass in a custom function as the 'selector' | ||
| 403 | // option, if you prefer to write your own autocompletion logic. | ||
| 404 | // In that case, the other options above will not apply unless | ||
| 405 | // you support them. | ||
| 406 | |||
| 407 | Autocompleter.Local = Class.create(Autocompleter.Base, { | ||
| 408 | initialize: function(element, update, array, options) { | ||
| 409 | this.baseInitialize(element, update, options); | ||
| 410 | this.options.array = array; | ||
| 411 | }, | ||
| 412 | |||
| 413 | getUpdatedChoices: function() { | ||
| 414 | this.updateChoices(this.options.selector(this)); | ||
| 415 | }, | ||
| 416 | |||
| 417 | setOptions: function(options) { | ||
| 418 | this.options = Object.extend({ | ||
| 419 | choices: 10, | ||
| 420 | partialSearch: true, | ||
| 421 | partialChars: 2, | ||
| 422 | ignoreCase: true, | ||
| 423 | fullSearch: false, | ||
| 424 | selector: function(instance) { | ||
| 425 | var ret = []; // Beginning matches | ||
| 426 | var partial = []; // Inside matches | ||
| 427 | var entry = instance.getToken(); | ||
| 428 | var count = 0; | ||
| 429 | |||
| 430 | for (var i = 0; i < instance.options.array.length && | ||
| 431 | ret.length < instance.options.choices ; i++) { | ||
| 432 | |||
| 433 | var elem = instance.options.array[i]; | ||
| 434 | var foundPos = instance.options.ignoreCase ? | ||
| 435 | elem.toLowerCase().indexOf(entry.toLowerCase()) : | ||
| 436 | elem.indexOf(entry); | ||
| 437 | |||
| 438 | while (foundPos != -1) { | ||
| 439 | if (foundPos == 0 && elem.length != entry.length) { | ||
| 440 | ret.push("<li><strong>" + elem.substr(0, entry.length) + "</strong>" + | ||
| 441 | elem.substr(entry.length) + "</li>"); | ||
| 442 | break; | ||
| 443 | } else if (entry.length >= instance.options.partialChars && | ||
| 444 | instance.options.partialSearch && foundPos != -1) { | ||
| 445 | if (instance.options.fullSearch || /\s/.test(elem.substr(foundPos-1,1))) { | ||
| 446 | partial.push("<li>" + elem.substr(0, foundPos) + "<strong>" + | ||
| 447 | elem.substr(foundPos, entry.length) + "</strong>" + elem.substr( | ||
| 448 | foundPos + entry.length) + "</li>"); | ||
| 449 | break; | ||
| 450 | } | ||
| 451 | } | ||
| 452 | |||
| 453 | foundPos = instance.options.ignoreCase ? | ||
| 454 | elem.toLowerCase().indexOf(entry.toLowerCase(), foundPos + 1) : | ||
| 455 | elem.indexOf(entry, foundPos + 1); | ||
| 456 | |||
| 457 | } | ||
| 458 | } | ||
| 459 | if (partial.length) | ||
| 460 | ret = ret.concat(partial.slice(0, instance.options.choices - ret.length)); | ||
| 461 | return "<ul>" + ret.join('') + "</ul>"; | ||
| 462 | } | ||
| 463 | }, options || { }); | ||
| 464 | } | ||
| 465 | }); | ||
| 466 | |||
| 467 | // AJAX in-place editor and collection editor | ||
| 468 | // Full rewrite by Christophe Porteneuve <tdd@tddsworld.com> (April 2007). | ||
| 469 | |||
| 470 | // Use this if you notice weird scrolling problems on some browsers, | ||
| 471 | // the DOM might be a bit confused when this gets called so do this | ||
| 472 | // waits 1 ms (with setTimeout) until it does the activation | ||
| 473 | Field.scrollFreeActivate = function(field) { | ||
| 474 | setTimeout(function() { | ||
| 475 | Field.activate(field); | ||
| 476 | }, 1); | ||
| 477 | }; | ||
| 478 | |||
| 479 | Ajax.InPlaceEditor = Class.create({ | ||
| 480 | initialize: function(element, url, options) { | ||
| 481 | this.url = url; | ||
| 482 | this.element = element = $(element); | ||
| 483 | this.prepareOptions(); | ||
| 484 | this._controls = { }; | ||
| 485 | arguments.callee.dealWithDeprecatedOptions(options); // DEPRECATION LAYER!!! | ||
| 486 | Object.extend(this.options, options || { }); | ||
| 487 | if (!this.options.formId && this.element.id) { | ||
| 488 | this.options.formId = this.element.id + '-inplaceeditor'; | ||
| 489 | if ($(this.options.formId)) | ||
| 490 | this.options.formId = ''; | ||
| 491 | } | ||
| 492 | if (this.options.externalControl) | ||
| 493 | this.options.externalControl = $(this.options.externalControl); | ||
| 494 | if (!this.options.externalControl) | ||
| 495 | this.options.externalControlOnly = false; | ||
| 496 | this._originalBackground = this.element.getStyle('background-color') || 'transparent'; | ||
| 497 | this.element.title = this.options.clickToEditText; | ||
| 498 | this._boundCancelHandler = this.handleFormCancellation.bind(this); | ||
| 499 | this._boundComplete = (this.options.onComplete || Prototype.emptyFunction).bind(this); | ||
| 500 | this._boundFailureHandler = this.handleAJAXFailure.bind(this); | ||
| 501 | this._boundSubmitHandler = this.handleFormSubmission.bind(this); | ||
| 502 | this._boundWrapperHandler = this.wrapUp.bind(this); | ||
| 503 | this.registerListeners(); | ||
| 504 | }, | ||
| 505 | checkForEscapeOrReturn: function(e) { | ||
| 506 | if (!this._editing || e.ctrlKey || e.altKey || e.shiftKey) return; | ||
| 507 | if (Event.KEY_ESC == e.keyCode) | ||
| 508 | this.handleFormCancellation(e); | ||
| 509 | else if (Event.KEY_RETURN == e.keyCode) | ||
| 510 | this.handleFormSubmission(e); | ||
| 511 | }, | ||
| 512 | createControl: function(mode, handler, extraClasses) { | ||
| 513 | var control = this.options[mode + 'Control']; | ||
| 514 | var text = this.options[mode + 'Text']; | ||
| 515 | if ('button' == control) { | ||
| 516 | var btn = document.createElement('input'); | ||
| 517 | btn.type = 'submit'; | ||
| 518 | btn.value = text; | ||
| 519 | btn.className = 'editor_' + mode + '_button'; | ||
| 520 | if ('cancel' == mode) | ||
| 521 | btn.onclick = this._boundCancelHandler; | ||
| 522 | this._form.appendChild(btn); | ||
| 523 | this._controls[mode] = btn; | ||
| 524 | } else if ('link' == control) { | ||
| 525 | var link = document.createElement('a'); | ||
| 526 | link.href = '#'; | ||
| 527 | link.appendChild(document.createTextNode(text)); | ||
| 528 | link.onclick = 'cancel' == mode ? this._boundCancelHandler : this._boundSubmitHandler; | ||
| 529 | link.className = 'editor_' + mode + '_link'; | ||
| 530 | if (extraClasses) | ||
| 531 | link.className += ' ' + extraClasses; | ||
| 532 | this._form.appendChild(link); | ||
| 533 | this._controls[mode] = link; | ||
| 534 | } | ||
| 535 | }, | ||
| 536 | createEditField: function() { | ||
| 537 | var text = (this.options.loadTextURL ? this.options.loadingText : this.getText()); | ||
| 538 | var fld; | ||
| 539 | if (1 >= this.options.rows && !/\r|\n/.test(this.getText())) { | ||
| 540 | fld = document.createElement('input'); | ||
| 541 | fld.type = 'text'; | ||
| 542 | var size = this.options.size || this.options.cols || 0; | ||
| 543 | if (0 < size) fld.size = size; | ||
| 544 | } else { | ||
| 545 | fld = document.createElement('textarea'); | ||
| 546 | fld.rows = (1 >= this.options.rows ? this.options.autoRows : this.options.rows); | ||
| 547 | fld.cols = this.options.cols || 40; | ||
| 548 | } | ||
| 549 | fld.name = this.options.paramName; | ||
| 550 | fld.value = text; // No HTML breaks conversion anymore | ||
| 551 | fld.className = 'editor_field'; | ||
| 552 | if (this.options.submitOnBlur) | ||
| 553 | fld.onblur = this._boundSubmitHandler; | ||
| 554 | this._controls.editor = fld; | ||
| 555 | if (this.options.loadTextURL) | ||
| 556 | this.loadExternalText(); | ||
| 557 | this._form.appendChild(this._controls.editor); | ||
| 558 | }, | ||
| 559 | createForm: function() { | ||
| 560 | var ipe = this; | ||
| 561 | function addText(mode, condition) { | ||
| 562 | var text = ipe.options['text' + mode + 'Controls']; | ||
| 563 | if (!text || condition === false) return; | ||
| 564 | ipe._form.appendChild(document.createTextNode(text)); | ||
| 565 | }; | ||
| 566 | this._form = $(document.createElement('form')); | ||
| 567 | this._form.id = this.options.formId; | ||
| 568 | this._form.addClassName(this.options.formClassName); | ||
| 569 | this._form.onsubmit = this._boundSubmitHandler; | ||
| 570 | this.createEditField(); | ||
| 571 | if ('textarea' == this._controls.editor.tagName.toLowerCase()) | ||
| 572 | this._form.appendChild(document.createElement('br')); | ||
| 573 | if (this.options.onFormCustomization) | ||
| 574 | this.options.onFormCustomization(this, this._form); | ||
| 575 | addText('Before', this.options.okControl || this.options.cancelControl); | ||
| 576 | this.createControl('ok', this._boundSubmitHandler); | ||
| 577 | addText('Between', this.options.okControl && this.options.cancelControl); | ||
| 578 | this.createControl('cancel', this._boundCancelHandler, 'editor_cancel'); | ||
| 579 | addText('After', this.options.okControl || this.options.cancelControl); | ||
| 580 | }, | ||
| 581 | destroy: function() { | ||
| 582 | if (this._oldInnerHTML) | ||
| 583 | this.element.innerHTML = this._oldInnerHTML; | ||
| 584 | this.leaveEditMode(); | ||
| 585 | this.unregisterListeners(); | ||
| 586 | }, | ||
| 587 | enterEditMode: function(e) { | ||
| 588 | if (this._saving || this._editing) return; | ||
| 589 | this._editing = true; | ||
| 590 | this.triggerCallback('onEnterEditMode'); | ||
| 591 | if (this.options.externalControl) | ||
| 592 | this.options.externalControl.hide(); | ||
| 593 | this.element.hide(); | ||
| 594 | this.createForm(); | ||
| 595 | this.element.parentNode.insertBefore(this._form, this.element); | ||
| 596 | if (!this.options.loadTextURL) | ||
| 597 | this.postProcessEditField(); | ||
| 598 | if (e) Event.stop(e); | ||
| 599 | }, | ||
| 600 | enterHover: function(e) { | ||
| 601 | if (this.options.hoverClassName) | ||
| 602 | this.element.addClassName(this.options.hoverClassName); | ||
| 603 | if (this._saving) return; | ||
| 604 | this.triggerCallback('onEnterHover'); | ||
| 605 | }, | ||
| 606 | getText: function() { | ||
| 607 | return this.element.innerHTML.unescapeHTML(); | ||
| 608 | }, | ||
| 609 | handleAJAXFailure: function(transport) { | ||
| 610 | this.triggerCallback('onFailure', transport); | ||
| 611 | if (this._oldInnerHTML) { | ||
| 612 | this.element.innerHTML = this._oldInnerHTML; | ||
| 613 | this._oldInnerHTML = null; | ||
| 614 | } | ||
| 615 | }, | ||
| 616 | handleFormCancellation: function(e) { | ||
| 617 | this.wrapUp(); | ||
| 618 | if (e) Event.stop(e); | ||
| 619 | }, | ||
| 620 | handleFormSubmission: function(e) { | ||
| 621 | var form = this._form; | ||
| 622 | var value = $F(this._controls.editor); | ||
| 623 | this.prepareSubmission(); | ||
| 624 | var params = this.options.callback(form, value) || ''; | ||
| 625 | if (Object.isString(params)) | ||
| 626 | params = params.toQueryParams(); | ||
| 627 | params.editorId = this.element.id; | ||
| 628 | if (this.options.htmlResponse) { | ||
| 629 | var options = Object.extend({ evalScripts: true }, this.options.ajaxOptions); | ||
| 630 | Object.extend(options, { | ||
| 631 | parameters: params, | ||
| 632 | onComplete: this._boundWrapperHandler, | ||
| 633 | onFailure: this._boundFailureHandler | ||
| 634 | }); | ||
| 635 | new Ajax.Updater({ success: this.element }, this.url, options); | ||
| 636 | } else { | ||
| 637 | var options = Object.extend({ method: 'get' }, this.options.ajaxOptions); | ||
| 638 | Object.extend(options, { | ||
| 639 | parameters: params, | ||
| 640 | onComplete: this._boundWrapperHandler, | ||
| 641 | onFailure: this._boundFailureHandler | ||
| 642 | }); | ||
| 643 | new Ajax.Request(this.url, options); | ||
| 644 | } | ||
| 645 | if (e) Event.stop(e); | ||
| 646 | }, | ||
| 647 | leaveEditMode: function() { | ||
| 648 | this.element.removeClassName(this.options.savingClassName); | ||
| 649 | this.removeForm(); | ||
| 650 | this.leaveHover(); | ||
| 651 | this.element.style.backgroundColor = this._originalBackground; | ||
| 652 | this.element.show(); | ||
| 653 | if (this.options.externalControl) | ||
| 654 | this.options.externalControl.show(); | ||
| 655 | this._saving = false; | ||
| 656 | this._editing = false; | ||
| 657 | this._oldInnerHTML = null; | ||
| 658 | this.triggerCallback('onLeaveEditMode'); | ||
| 659 | }, | ||
| 660 | leaveHover: function(e) { | ||
| 661 | if (this.options.hoverClassName) | ||
| 662 | this.element.removeClassName(this.options.hoverClassName); | ||
| 663 | if (this._saving) return; | ||
| 664 | this.triggerCallback('onLeaveHover'); | ||
| 665 | }, | ||
| 666 | loadExternalText: function() { | ||
| 667 | this._form.addClassName(this.options.loadingClassName); | ||
| 668 | this._controls.editor.disabled = true; | ||
| 669 | var options = Object.extend({ method: 'get' }, this.options.ajaxOptions); | ||
| 670 | Object.extend(options, { | ||
| 671 | parameters: 'editorId=' + encodeURIComponent(this.element.id), | ||
| 672 | onComplete: Prototype.emptyFunction, | ||
| 673 | onSuccess: function(transport) { | ||
| 674 | this._form.removeClassName(this.options.loadingClassName); | ||
| 675 | var text = transport.responseText; | ||
| 676 | if (this.options.stripLoadedTextTags) | ||
| 677 | text = text.stripTags(); | ||
| 678 | this._controls.editor.value = text; | ||
| 679 | this._controls.editor.disabled = false; | ||
| 680 | this.postProcessEditField(); | ||
| 681 | }.bind(this), | ||
| 682 | onFailure: this._boundFailureHandler | ||
| 683 | }); | ||
| 684 | new Ajax.Request(this.options.loadTextURL, options); | ||
| 685 | }, | ||
| 686 | postProcessEditField: function() { | ||
| 687 | var fpc = this.options.fieldPostCreation; | ||
| 688 | if (fpc) | ||
| 689 | $(this._controls.editor)['focus' == fpc ? 'focus' : 'activate'](); | ||
| 690 | }, | ||
| 691 | prepareOptions: function() { | ||
| 692 | this.options = Object.clone(Ajax.InPlaceEditor.DefaultOptions); | ||
| 693 | Object.extend(this.options, Ajax.InPlaceEditor.DefaultCallbacks); | ||
| 694 | [this._extraDefaultOptions].flatten().compact().each(function(defs) { | ||
| 695 | Object.extend(this.options, defs); | ||
| 696 | }.bind(this)); | ||
| 697 | }, | ||
| 698 | prepareSubmission: function() { | ||
| 699 | this._saving = true; | ||
| 700 | this.removeForm(); | ||
| 701 | this.leaveHover(); | ||
| 702 | this.showSaving(); | ||
| 703 | }, | ||
| 704 | registerListeners: function() { | ||
| 705 | this._listeners = { }; | ||
| 706 | var listener; | ||
| 707 | $H(Ajax.InPlaceEditor.Listeners).each(function(pair) { | ||
| 708 | listener = this[pair.value].bind(this); | ||
| 709 | this._listeners[pair.key] = listener; | ||
| 710 | if (!this.options.externalControlOnly) | ||
| 711 | this.element.observe(pair.key, listener); | ||
| 712 | if (this.options.externalControl) | ||
| 713 | this.options.externalControl.observe(pair.key, listener); | ||
| 714 | }.bind(this)); | ||
| 715 | }, | ||
| 716 | removeForm: function() { | ||
| 717 | if (!this._form) return; | ||
| 718 | this._form.remove(); | ||
| 719 | this._form = null; | ||
| 720 | this._controls = { }; | ||
| 721 | }, | ||
| 722 | showSaving: function() { | ||
| 723 | this._oldInnerHTML = this.element.innerHTML; | ||
| 724 | this.element.innerHTML = this.options.savingText; | ||
| 725 | this.element.addClassName(this.options.savingClassName); | ||
| 726 | this.element.style.backgroundColor = this._originalBackground; | ||
| 727 | this.element.show(); | ||
| 728 | }, | ||
| 729 | triggerCallback: function(cbName, arg) { | ||
| 730 | if ('function' == typeof this.options[cbName]) { | ||
| 731 | this.options[cbName](this, arg); | ||
| 732 | } | ||
| 733 | }, | ||
| 734 | unregisterListeners: function() { | ||
| 735 | $H(this._listeners).each(function(pair) { | ||
| 736 | if (!this.options.externalControlOnly) | ||
| 737 | this.element.stopObserving(pair.key, pair.value); | ||
| 738 | if (this.options.externalControl) | ||
| 739 | this.options.externalControl.stopObserving(pair.key, pair.value); | ||
| 740 | }.bind(this)); | ||
| 741 | }, | ||
| 742 | wrapUp: function(transport) { | ||
| 743 | this.leaveEditMode(); | ||
| 744 | // Can't use triggerCallback due to backward compatibility: requires | ||
| 745 | // binding + direct element | ||
| 746 | this._boundComplete(transport, this.element); | ||
| 747 | } | ||
| 748 | }); | ||
| 749 | |||
| 750 | Object.extend(Ajax.InPlaceEditor.prototype, { | ||
| 751 | dispose: Ajax.InPlaceEditor.prototype.destroy | ||
| 752 | }); | ||
| 753 | |||
| 754 | Ajax.InPlaceCollectionEditor = Class.create(Ajax.InPlaceEditor, { | ||
| 755 | initialize: function($super, element, url, options) { | ||
| 756 | this._extraDefaultOptions = Ajax.InPlaceCollectionEditor.DefaultOptions; | ||
| 757 | $super(element, url, options); | ||
| 758 | }, | ||
| 759 | |||
| 760 | createEditField: function() { | ||
| 761 | var list = document.createElement('select'); | ||
| 762 | list.name = this.options.paramName; | ||
| 763 | list.size = 1; | ||
| 764 | this._controls.editor = list; | ||
| 765 | this._collection = this.options.collection || []; | ||
| 766 | if (this.options.loadCollectionURL) | ||
| 767 | this.loadCollection(); | ||
| 768 | else | ||
| 769 | this.checkForExternalText(); | ||
| 770 | this._form.appendChild(this._controls.editor); | ||
| 771 | }, | ||
| 772 | |||
| 773 | loadCollection: function() { | ||
| 774 | this._form.addClassName(this.options.loadingClassName); | ||
| 775 | this.showLoadingText(this.options.loadingCollectionText); | ||
| 776 | var options = Object.extend({ method: 'get' }, this.options.ajaxOptions); | ||
| 777 | Object.extend(options, { | ||
| 778 | parameters: 'editorId=' + encodeURIComponent(this.element.id), | ||
| 779 | onComplete: Prototype.emptyFunction, | ||
| 780 | onSuccess: function(transport) { | ||
| 781 | var js = transport.responseText.strip(); | ||
| 782 | if (!/^\[.*\]$/.test(js)) // TODO: improve sanity check | ||
| 783 | throw('Server returned an invalid collection representation.'); | ||
| 784 | this._collection = eval(js); | ||
| 785 | this.checkForExternalText(); | ||
| 786 | }.bind(this), | ||
| 787 | onFailure: this.onFailure | ||
| 788 | }); | ||
| 789 | new Ajax.Request(this.options.loadCollectionURL, options); | ||
| 790 | }, | ||
| 791 | |||
| 792 | showLoadingText: function(text) { | ||
| 793 | this._controls.editor.disabled = true; | ||
| 794 | var tempOption = this._controls.editor.firstChild; | ||
| 795 | if (!tempOption) { | ||
| 796 | tempOption = document.createElement('option'); | ||
| 797 | tempOption.value = ''; | ||
| 798 | this._controls.editor.appendChild(tempOption); | ||
| 799 | tempOption.selected = true; | ||
| 800 | } | ||
| 801 | tempOption.update((text || '').stripScripts().stripTags()); | ||
| 802 | }, | ||
| 803 | |||
| 804 | checkForExternalText: function() { | ||
| 805 | this._text = this.getText(); | ||
| 806 | if (this.options.loadTextURL) | ||
| 807 | this.loadExternalText(); | ||
| 808 | else | ||
| 809 | this.buildOptionList(); | ||
| 810 | }, | ||
| 811 | |||
| 812 | loadExternalText: function() { | ||
| 813 | this.showLoadingText(this.options.loadingText); | ||
| 814 | var options = Object.extend({ method: 'get' }, this.options.ajaxOptions); | ||
| 815 | Object.extend(options, { | ||
| 816 | parameters: 'editorId=' + encodeURIComponent(this.element.id), | ||
| 817 | onComplete: Prototype.emptyFunction, | ||
| 818 | onSuccess: function(transport) { | ||
| 819 | this._text = transport.responseText.strip(); | ||
| 820 | this.buildOptionList(); | ||
| 821 | }.bind(this), | ||
| 822 | onFailure: this.onFailure | ||
| 823 | }); | ||
| 824 | new Ajax.Request(this.options.loadTextURL, options); | ||
| 825 | }, | ||
| 826 | |||
| 827 | buildOptionList: function() { | ||
| 828 | this._form.removeClassName(this.options.loadingClassName); | ||
| 829 | this._collection = this._collection.map(function(entry) { | ||
| 830 | return 2 === entry.length ? entry : [entry, entry].flatten(); | ||
| 831 | }); | ||
| 832 | var marker = ('value' in this.options) ? this.options.value : this._text; | ||
| 833 | var textFound = this._collection.any(function(entry) { | ||
| 834 | return entry[0] == marker; | ||
| 835 | }.bind(this)); | ||
| 836 | this._controls.editor.update(''); | ||
| 837 | var option; | ||
| 838 | this._collection.each(function(entry, index) { | ||
| 839 | option = document.createElement('option'); | ||
| 840 | option.value = entry[0]; | ||
| 841 | option.selected = textFound ? entry[0] == marker : 0 == index; | ||
| 842 | option.appendChild(document.createTextNode(entry[1])); | ||
| 843 | this._controls.editor.appendChild(option); | ||
| 844 | }.bind(this)); | ||
| 845 | this._controls.editor.disabled = false; | ||
| 846 | Field.scrollFreeActivate(this._controls.editor); | ||
| 847 | } | ||
| 848 | }); | ||
| 849 | |||
| 850 | //**** DEPRECATION LAYER FOR InPlace[Collection]Editor! **** | ||
| 851 | //**** This only exists for a while, in order to let **** | ||
| 852 | //**** users adapt to the new API. Read up on the new **** | ||
| 853 | //**** API and convert your code to it ASAP! **** | ||
| 854 | |||
| 855 | Ajax.InPlaceEditor.prototype.initialize.dealWithDeprecatedOptions = function(options) { | ||
| 856 | if (!options) return; | ||
| 857 | function fallback(name, expr) { | ||
| 858 | if (name in options || expr === undefined) return; | ||
| 859 | options[name] = expr; | ||
| 860 | }; | ||
| 861 | fallback('cancelControl', (options.cancelLink ? 'link' : (options.cancelButton ? 'button' : | ||
| 862 | options.cancelLink == options.cancelButton == false ? false : undefined))); | ||
| 863 | fallback('okControl', (options.okLink ? 'link' : (options.okButton ? 'button' : | ||
| 864 | options.okLink == options.okButton == false ? false : undefined))); | ||
| 865 | fallback('highlightColor', options.highlightcolor); | ||
| 866 | fallback('highlightEndColor', options.highlightendcolor); | ||
| 867 | }; | ||
| 868 | |||
| 869 | Object.extend(Ajax.InPlaceEditor, { | ||
| 870 | DefaultOptions: { | ||
| 871 | ajaxOptions: { }, | ||
| 872 | autoRows: 3, // Use when multi-line w/ rows == 1 | ||
| 873 | cancelControl: 'link', // 'link'|'button'|false | ||
| 874 | cancelText: 'cancel', | ||
| 875 | clickToEditText: 'Click to edit', | ||
| 876 | externalControl: null, // id|elt | ||
| 877 | externalControlOnly: false, | ||
| 878 | fieldPostCreation: 'activate', // 'activate'|'focus'|false | ||
| 879 | formClassName: 'inplaceeditor-form', | ||
| 880 | formId: null, // id|elt | ||
| 881 | highlightColor: '#ffff99', | ||
| 882 | highlightEndColor: '#ffffff', | ||
| 883 | hoverClassName: '', | ||
| 884 | htmlResponse: true, | ||
| 885 | loadingClassName: 'inplaceeditor-loading', | ||
| 886 | loadingText: 'Loading...', | ||
| 887 | okControl: 'button', // 'link'|'button'|false | ||
| 888 | okText: 'ok', | ||
| 889 | paramName: 'value', | ||
| 890 | rows: 1, // If 1 and multi-line, uses autoRows | ||
| 891 | savingClassName: 'inplaceeditor-saving', | ||
| 892 | savingText: 'Saving...', | ||
| 893 | size: 0, | ||
| 894 | stripLoadedTextTags: false, | ||
| 895 | submitOnBlur: false, | ||
| 896 | textAfterControls: '', | ||
| 897 | textBeforeControls: '', | ||
| 898 | textBetweenControls: '' | ||
| 899 | }, | ||
| 900 | DefaultCallbacks: { | ||
| 901 | callback: function(form) { | ||
| 902 | return Form.serialize(form); | ||
| 903 | }, | ||
| 904 | onComplete: function(transport, element) { | ||
| 905 | // For backward compatibility, this one is bound to the IPE, and passes | ||
| 906 | // the element directly. It was too often customized, so we don't break it. | ||
| 907 | new Effect.Highlight(element, { | ||
| 908 | startcolor: this.options.highlightColor, keepBackgroundImage: true }); | ||
| 909 | }, | ||
| 910 | onEnterEditMode: null, | ||
| 911 | onEnterHover: function(ipe) { | ||
| 912 | ipe.element.style.backgroundColor = ipe.options.highlightColor; | ||
| 913 | if (ipe._effect) | ||
| 914 | ipe._effect.cancel(); | ||
| 915 | }, | ||
| 916 | onFailure: function(transport, ipe) { | ||
| 917 | alert('Error communication with the server: ' + transport.responseText.stripTags()); | ||
| 918 | }, | ||
| 919 | onFormCustomization: null, // Takes the IPE and its generated form, after editor, before controls. | ||
| 920 | onLeaveEditMode: null, | ||
| 921 | onLeaveHover: function(ipe) { | ||
| 922 | ipe._effect = new Effect.Highlight(ipe.element, { | ||
| 923 | startcolor: ipe.options.highlightColor, endcolor: ipe.options.highlightEndColor, | ||
| 924 | restorecolor: ipe._originalBackground, keepBackgroundImage: true | ||
| 925 | }); | ||
| 926 | } | ||
| 927 | }, | ||
| 928 | Listeners: { | ||
| 929 | click: 'enterEditMode', | ||
| 930 | keydown: 'checkForEscapeOrReturn', | ||
| 931 | mouseover: 'enterHover', | ||
| 932 | mouseout: 'leaveHover' | ||
| 933 | } | ||
| 934 | }); | ||
| 935 | |||
| 936 | Ajax.InPlaceCollectionEditor.DefaultOptions = { | ||
| 937 | loadingCollectionText: 'Loading options...' | ||
| 938 | }; | ||
| 939 | |||
| 940 | // Delayed observer, like Form.Element.Observer, | ||
| 941 | // but waits for delay after last key input | ||
| 942 | // Ideal for live-search fields | ||
| 943 | |||
| 944 | Form.Element.DelayedObserver = Class.create({ | ||
| 945 | initialize: function(element, delay, callback) { | ||
| 946 | this.delay = delay || 0.5; | ||
| 947 | this.element = $(element); | ||
| 948 | this.callback = callback; | ||
| 949 | this.timer = null; | ||
| 950 | this.lastValue = $F(this.element); | ||
| 951 | Event.observe(this.element,'keyup',this.delayedListener.bindAsEventListener(this)); | ||
| 952 | }, | ||
| 953 | delayedListener: function(event) { | ||
| 954 | if(this.lastValue == $F(this.element)) return; | ||
| 955 | if(this.timer) clearTimeout(this.timer); | ||
| 956 | this.timer = setTimeout(this.onTimerEvent.bind(this), this.delay * 1000); | ||
| 957 | this.lastValue = $F(this.element); | ||
| 958 | }, | ||
| 959 | onTimerEvent: function() { | ||
| 960 | this.timer = null; | ||
| 961 | this.callback(this.element, $F(this.element)); | ||
| 962 | } | ||
| 963 | }); \ No newline at end of file | ||
