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comparison: testing/mochitest/tests/MochiKit-1.4.2/MochiKit/Signal.js
testing/mochitest/tests/MochiKit-1.4.2/MochiKit/Signal.js
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| 1 /*** | |
| 2 | |
| 3 MochiKit.Signal 1.4.2 | |
| 4 | |
| 5 See <http://mochikit.com/> for documentation, downloads, license, etc. | |
| 6 | |
| 7 (c) 2006 Jonathan Gardner, Beau Hartshorne, Bob Ippolito. All rights Reserved. | |
| 8 | |
| 9 ***/ | |
| 10 | |
| 11 MochiKit.Base._deps('Signal', ['Base', 'DOM', 'Style']); | |
| 12 | |
| 13 MochiKit.Signal.NAME = 'MochiKit.Signal'; | |
| 14 MochiKit.Signal.VERSION = '1.4.2'; | |
| 15 | |
| 16 MochiKit.Signal._observers = []; | |
| 17 | |
| 18 /** @id MochiKit.Signal.Event */ | |
| 19 MochiKit.Signal.Event = function (src, e) { | |
| 20 this._event = e || window.event; | |
| 21 this._src = src; | |
| 22 }; | |
| 23 | |
| 24 MochiKit.Base.update(MochiKit.Signal.Event.prototype, { | |
| 25 | |
| 26 __repr__: function () { | |
| 27 var repr = MochiKit.Base.repr; | |
| 28 var str = '{event(): ' + repr(this.event()) + | |
| 29 ', src(): ' + repr(this.src()) + | |
| 30 ', type(): ' + repr(this.type()) + | |
| 31 ', target(): ' + repr(this.target()); | |
| 32 | |
| 33 if (this.type() && | |
| 34 this.type().indexOf('key') === 0 || | |
| 35 this.type().indexOf('mouse') === 0 || | |
| 36 this.type().indexOf('click') != -1 || | |
| 37 this.type() == 'contextmenu') { | |
| 38 str += ', modifier(): ' + '{alt: ' + repr(this.modifier().alt) + | |
| 39 ', ctrl: ' + repr(this.modifier().ctrl) + | |
| 40 ', meta: ' + repr(this.modifier().meta) + | |
| 41 ', shift: ' + repr(this.modifier().shift) + | |
| 42 ', any: ' + repr(this.modifier().any) + '}'; | |
| 43 } | |
| 44 | |
| 45 if (this.type() && this.type().indexOf('key') === 0) { | |
| 46 str += ', key(): {code: ' + repr(this.key().code) + | |
| 47 ', string: ' + repr(this.key().string) + '}'; | |
| 48 } | |
| 49 | |
| 50 if (this.type() && ( | |
| 51 this.type().indexOf('mouse') === 0 || | |
| 52 this.type().indexOf('click') != -1 || | |
| 53 this.type() == 'contextmenu')) { | |
| 54 | |
| 55 str += ', mouse(): {page: ' + repr(this.mouse().page) + | |
| 56 ', client: ' + repr(this.mouse().client); | |
| 57 | |
| 58 if (this.type() != 'mousemove' && this.type() != 'mousewheel') { | |
| 59 str += ', button: {left: ' + repr(this.mouse().button.left) + | |
| 60 ', middle: ' + repr(this.mouse().button.middle) + | |
| 61 ', right: ' + repr(this.mouse().button.right) + '}'; | |
| 62 } | |
| 63 if (this.type() == 'mousewheel') { | |
| 64 str += ', wheel: ' + repr(this.mouse().wheel); | |
| 65 } | |
| 66 str += '}'; | |
| 67 } | |
| 68 if (this.type() == 'mouseover' || this.type() == 'mouseout' || | |
| 69 this.type() == 'mouseenter' || this.type() == 'mouseleave') { | |
| 70 str += ', relatedTarget(): ' + repr(this.relatedTarget()); | |
| 71 } | |
| 72 str += '}'; | |
| 73 return str; | |
| 74 }, | |
| 75 | |
| 76 /** @id MochiKit.Signal.Event.prototype.toString */ | |
| 77 toString: function () { | |
| 78 return this.__repr__(); | |
| 79 }, | |
| 80 | |
| 81 /** @id MochiKit.Signal.Event.prototype.src */ | |
| 82 src: function () { | |
| 83 return this._src; | |
| 84 }, | |
| 85 | |
| 86 /** @id MochiKit.Signal.Event.prototype.event */ | |
| 87 event: function () { | |
| 88 return this._event; | |
| 89 }, | |
| 90 | |
| 91 /** @id MochiKit.Signal.Event.prototype.type */ | |
| 92 type: function () { | |
| 93 if (this._event.type === "DOMMouseScroll") { | |
| 94 return "mousewheel"; | |
| 95 } else { | |
| 96 return this._event.type || undefined; | |
| 97 } | |
| 98 }, | |
| 99 | |
| 100 /** @id MochiKit.Signal.Event.prototype.target */ | |
| 101 target: function () { | |
| 102 return this._event.target || this._event.srcElement; | |
| 103 }, | |
| 104 | |
| 105 _relatedTarget: null, | |
| 106 /** @id MochiKit.Signal.Event.prototype.relatedTarget */ | |
| 107 relatedTarget: function () { | |
| 108 if (this._relatedTarget !== null) { | |
| 109 return this._relatedTarget; | |
| 110 } | |
| 111 | |
| 112 var elem = null; | |
| 113 if (this.type() == 'mouseover' || this.type() == 'mouseenter') { | |
| 114 elem = (this._event.relatedTarget || | |
| 115 this._event.fromElement); | |
| 116 } else if (this.type() == 'mouseout' || this.type() == 'mouseleave') { | |
| 117 elem = (this._event.relatedTarget || | |
| 118 this._event.toElement); | |
| 119 } | |
| 120 try { | |
| 121 if (elem !== null && elem.nodeType !== null) { | |
| 122 this._relatedTarget = elem; | |
| 123 return elem; | |
| 124 } | |
| 125 } catch (ignore) { | |
| 126 // Firefox 3 throws a permission denied error when accessing | |
| 127 // any property on XUL elements (e.g. scrollbars)... | |
| 128 } | |
| 129 | |
| 130 return undefined; | |
| 131 }, | |
| 132 | |
| 133 _modifier: null, | |
| 134 /** @id MochiKit.Signal.Event.prototype.modifier */ | |
| 135 modifier: function () { | |
| 136 if (this._modifier !== null) { | |
| 137 return this._modifier; | |
| 138 } | |
| 139 var m = {}; | |
| 140 m.alt = this._event.altKey; | |
| 141 m.ctrl = this._event.ctrlKey; | |
| 142 m.meta = this._event.metaKey || false; // IE and Opera punt here | |
| 143 m.shift = this._event.shiftKey; | |
| 144 m.any = m.alt || m.ctrl || m.shift || m.meta; | |
| 145 this._modifier = m; | |
| 146 return m; | |
| 147 }, | |
| 148 | |
| 149 _key: null, | |
| 150 /** @id MochiKit.Signal.Event.prototype.key */ | |
| 151 key: function () { | |
| 152 if (this._key !== null) { | |
| 153 return this._key; | |
| 154 } | |
| 155 var k = {}; | |
| 156 if (this.type() && this.type().indexOf('key') === 0) { | |
| 157 | |
| 158 /* | |
| 159 | |
| 160 If you're looking for a special key, look for it in keydown or | |
| 161 keyup, but never keypress. If you're looking for a Unicode | |
| 162 chracter, look for it with keypress, but never keyup or | |
| 163 keydown. | |
| 164 | |
| 165 Notes: | |
| 166 | |
| 167 FF key event behavior: | |
| 168 key event charCode keyCode | |
| 169 DOWN ku,kd 0 40 | |
| 170 DOWN kp 0 40 | |
| 171 ESC ku,kd 0 27 | |
| 172 ESC kp 0 27 | |
| 173 a ku,kd 0 65 | |
| 174 a kp 97 0 | |
| 175 shift+a ku,kd 0 65 | |
| 176 shift+a kp 65 0 | |
| 177 1 ku,kd 0 49 | |
| 178 1 kp 49 0 | |
| 179 shift+1 ku,kd 0 0 | |
| 180 shift+1 kp 33 0 | |
| 181 | |
| 182 IE key event behavior: | |
| 183 (IE doesn't fire keypress events for special keys.) | |
| 184 key event keyCode | |
| 185 DOWN ku,kd 40 | |
| 186 DOWN kp undefined | |
| 187 ESC ku,kd 27 | |
| 188 ESC kp 27 | |
| 189 a ku,kd 65 | |
| 190 a kp 97 | |
| 191 shift+a ku,kd 65 | |
| 192 shift+a kp 65 | |
| 193 1 ku,kd 49 | |
| 194 1 kp 49 | |
| 195 shift+1 ku,kd 49 | |
| 196 shift+1 kp 33 | |
| 197 | |
| 198 Safari key event behavior: | |
| 199 (Safari sets charCode and keyCode to something crazy for | |
| 200 special keys.) | |
| 201 key event charCode keyCode | |
| 202 DOWN ku,kd 63233 40 | |
| 203 DOWN kp 63233 63233 | |
| 204 ESC ku,kd 27 27 | |
| 205 ESC kp 27 27 | |
| 206 a ku,kd 97 65 | |
| 207 a kp 97 97 | |
| 208 shift+a ku,kd 65 65 | |
| 209 shift+a kp 65 65 | |
| 210 1 ku,kd 49 49 | |
| 211 1 kp 49 49 | |
| 212 shift+1 ku,kd 33 49 | |
| 213 shift+1 kp 33 33 | |
| 214 | |
| 215 */ | |
| 216 | |
| 217 /* look for special keys here */ | |
| 218 if (this.type() == 'keydown' || this.type() == 'keyup') { | |
| 219 k.code = this._event.keyCode; | |
| 220 k.string = (MochiKit.Signal._specialKeys[k.code] || | |
| 221 'KEY_UNKNOWN'); | |
| 222 this._key = k; | |
| 223 return k; | |
| 224 | |
| 225 /* look for characters here */ | |
| 226 } else if (this.type() == 'keypress') { | |
| 227 | |
| 228 /* | |
| 229 | |
| 230 Special key behavior: | |
| 231 | |
| 232 IE: does not fire keypress events for special keys | |
| 233 FF: sets charCode to 0, and sets the correct keyCode | |
| 234 Safari: sets keyCode and charCode to something stupid | |
| 235 | |
| 236 */ | |
| 237 | |
| 238 k.code = 0; | |
| 239 k.string = ''; | |
| 240 | |
| 241 if (typeof(this._event.charCode) != 'undefined' && | |
| 242 this._event.charCode !== 0 && | |
| 243 !MochiKit.Signal._specialMacKeys[this._event.charCode]) { | |
| 244 k.code = this._event.charCode; | |
| 245 k.string = String.fromCharCode(k.code); | |
| 246 } else if (this._event.keyCode && | |
| 247 typeof(this._event.charCode) == 'undefined') { // IE | |
| 248 k.code = this._event.keyCode; | |
| 249 k.string = String.fromCharCode(k.code); | |
| 250 } | |
| 251 | |
| 252 this._key = k; | |
| 253 return k; | |
| 254 } | |
| 255 } | |
| 256 return undefined; | |
| 257 }, | |
| 258 | |
| 259 _mouse: null, | |
| 260 /** @id MochiKit.Signal.Event.prototype.mouse */ | |
| 261 mouse: function () { | |
| 262 if (this._mouse !== null) { | |
| 263 return this._mouse; | |
| 264 } | |
| 265 | |
| 266 var m = {}; | |
| 267 var e = this._event; | |
| 268 | |
| 269 if (this.type() && ( | |
| 270 this.type().indexOf('mouse') === 0 || | |
| 271 this.type().indexOf('click') != -1 || | |
| 272 this.type() == 'contextmenu')) { | |
| 273 | |
| 274 m.client = new MochiKit.Style.Coordinates(0, 0); | |
| 275 if (e.clientX || e.clientY) { | |
| 276 m.client.x = (!e.clientX || e.clientX < 0) ? 0 : e.clientX; | |
| 277 m.client.y = (!e.clientY || e.clientY < 0) ? 0 : e.clientY; | |
| 278 } | |
| 279 | |
| 280 m.page = new MochiKit.Style.Coordinates(0, 0); | |
| 281 if (e.pageX || e.pageY) { | |
| 282 m.page.x = (!e.pageX || e.pageX < 0) ? 0 : e.pageX; | |
| 283 m.page.y = (!e.pageY || e.pageY < 0) ? 0 : e.pageY; | |
| 284 } else { | |
| 285 /* | |
| 286 | |
| 287 The IE shortcut can be off by two. We fix it. See: | |
| 288 http://msdn.microsoft.com/workshop/author/dhtml/reference/methods/getboundingclientrect.asp | |
| 289 | |
| 290 This is similar to the method used in | |
| 291 MochiKit.Style.getElementPosition(). | |
| 292 | |
| 293 */ | |
| 294 var de = MochiKit.DOM._document.documentElement; | |
| 295 var b = MochiKit.DOM._document.body; | |
| 296 | |
| 297 m.page.x = e.clientX + | |
| 298 (de.scrollLeft || b.scrollLeft) - | |
| 299 (de.clientLeft || 0); | |
| 300 | |
| 301 m.page.y = e.clientY + | |
| 302 (de.scrollTop || b.scrollTop) - | |
| 303 (de.clientTop || 0); | |
| 304 | |
| 305 } | |
| 306 if (this.type() != 'mousemove' && this.type() != 'mousewheel') { | |
| 307 m.button = {}; | |
| 308 m.button.left = false; | |
| 309 m.button.right = false; | |
| 310 m.button.middle = false; | |
| 311 | |
| 312 /* we could check e.button, but which is more consistent */ | |
| 313 if (e.which) { | |
| 314 m.button.left = (e.which == 1); | |
| 315 m.button.middle = (e.which == 2); | |
| 316 m.button.right = (e.which == 3); | |
| 317 | |
| 318 /* | |
| 319 | |
| 320 Mac browsers and right click: | |
| 321 | |
| 322 - Safari doesn't fire any click events on a right | |
| 323 click: | |
| 324 http://bugs.webkit.org/show_bug.cgi?id=6595 | |
| 325 | |
| 326 - Firefox fires the event, and sets ctrlKey = true | |
| 327 | |
| 328 - Opera fires the event, and sets metaKey = true | |
| 329 | |
| 330 oncontextmenu is fired on right clicks between | |
| 331 browsers and across platforms. | |
| 332 | |
| 333 */ | |
| 334 | |
| 335 } else { | |
| 336 m.button.left = !!(e.button & 1); | |
| 337 m.button.right = !!(e.button & 2); | |
| 338 m.button.middle = !!(e.button & 4); | |
| 339 } | |
| 340 } | |
| 341 if (this.type() == 'mousewheel') { | |
| 342 m.wheel = new MochiKit.Style.Coordinates(0, 0); | |
| 343 if (e.wheelDeltaX || e.wheelDeltaY) { | |
| 344 m.wheel.x = e.wheelDeltaX / -40 || 0; | |
| 345 m.wheel.y = e.wheelDeltaY / -40 || 0; | |
| 346 } else if (e.wheelDelta) { | |
| 347 m.wheel.y = e.wheelDelta / -40; | |
| 348 } else { | |
| 349 m.wheel.y = e.detail || 0; | |
| 350 } | |
| 351 } | |
| 352 this._mouse = m; | |
| 353 return m; | |
| 354 } | |
| 355 return undefined; | |
| 356 }, | |
| 357 | |
| 358 /** @id MochiKit.Signal.Event.prototype.stop */ | |
| 359 stop: function () { | |
| 360 this.stopPropagation(); | |
| 361 this.preventDefault(); | |
| 362 }, | |
| 363 | |
| 364 /** @id MochiKit.Signal.Event.prototype.stopPropagation */ | |
| 365 stopPropagation: function () { | |
| 366 if (this._event.stopPropagation) { | |
| 367 this._event.stopPropagation(); | |
| 368 } else { | |
| 369 this._event.cancelBubble = true; | |
| 370 } | |
| 371 }, | |
| 372 | |
| 373 /** @id MochiKit.Signal.Event.prototype.preventDefault */ | |
| 374 preventDefault: function () { | |
| 375 if (this._event.preventDefault) { | |
| 376 this._event.preventDefault(); | |
| 377 } else if (this._confirmUnload === null) { | |
| 378 this._event.returnValue = false; | |
| 379 } | |
| 380 }, | |
| 381 | |
| 382 _confirmUnload: null, | |
| 383 | |
| 384 /** @id MochiKit.Signal.Event.prototype.confirmUnload */ | |
| 385 confirmUnload: function (msg) { | |
| 386 if (this.type() == 'beforeunload') { | |
| 387 this._confirmUnload = msg; | |
| 388 this._event.returnValue = msg; | |
| 389 } | |
| 390 } | |
| 391 }); | |
| 392 | |
| 393 /* Safari sets keyCode to these special values onkeypress. */ | |
| 394 MochiKit.Signal._specialMacKeys = { | |
| 395 3: 'KEY_ENTER', | |
| 396 63289: 'KEY_NUM_PAD_CLEAR', | |
| 397 63276: 'KEY_PAGE_UP', | |
| 398 63277: 'KEY_PAGE_DOWN', | |
| 399 63275: 'KEY_END', | |
| 400 63273: 'KEY_HOME', | |
| 401 63234: 'KEY_ARROW_LEFT', | |
| 402 63232: 'KEY_ARROW_UP', | |
| 403 63235: 'KEY_ARROW_RIGHT', | |
| 404 63233: 'KEY_ARROW_DOWN', | |
| 405 63302: 'KEY_INSERT', | |
| 406 63272: 'KEY_DELETE' | |
| 407 }; | |
| 408 | |
| 409 /* for KEY_F1 - KEY_F12 */ | |
| 410 (function () { | |
| 411 var _specialMacKeys = MochiKit.Signal._specialMacKeys; | |
| 412 for (i = 63236; i <= 63242; i++) { | |
| 413 // no F0 | |
| 414 _specialMacKeys[i] = 'KEY_F' + (i - 63236 + 1); | |
| 415 } | |
| 416 })(); | |
| 417 | |
| 418 /* Standard keyboard key codes. */ | |
| 419 MochiKit.Signal._specialKeys = { | |
| 420 8: 'KEY_BACKSPACE', | |
| 421 9: 'KEY_TAB', | |
| 422 12: 'KEY_NUM_PAD_CLEAR', // weird, for Safari and Mac FF only | |
| 423 13: 'KEY_ENTER', | |
| 424 16: 'KEY_SHIFT', | |
| 425 17: 'KEY_CTRL', | |
| 426 18: 'KEY_ALT', | |
| 427 19: 'KEY_PAUSE', | |
| 428 20: 'KEY_CAPS_LOCK', | |
| 429 27: 'KEY_ESCAPE', | |
| 430 32: 'KEY_SPACEBAR', | |
| 431 33: 'KEY_PAGE_UP', | |
| 432 34: 'KEY_PAGE_DOWN', | |
| 433 35: 'KEY_END', | |
| 434 36: 'KEY_HOME', | |
| 435 37: 'KEY_ARROW_LEFT', | |
| 436 38: 'KEY_ARROW_UP', | |
| 437 39: 'KEY_ARROW_RIGHT', | |
| 438 40: 'KEY_ARROW_DOWN', | |
| 439 44: 'KEY_PRINT_SCREEN', | |
| 440 45: 'KEY_INSERT', | |
| 441 46: 'KEY_DELETE', | |
| 442 59: 'KEY_SEMICOLON', // weird, for Safari and IE only | |
| 443 91: 'KEY_WINDOWS_LEFT', | |
| 444 92: 'KEY_WINDOWS_RIGHT', | |
| 445 93: 'KEY_SELECT', | |
| 446 106: 'KEY_NUM_PAD_ASTERISK', | |
| 447 107: 'KEY_NUM_PAD_PLUS_SIGN', | |
| 448 109: 'KEY_NUM_PAD_HYPHEN-MINUS', | |
| 449 110: 'KEY_NUM_PAD_FULL_STOP', | |
| 450 111: 'KEY_NUM_PAD_SOLIDUS', | |
| 451 144: 'KEY_NUM_LOCK', | |
| 452 145: 'KEY_SCROLL_LOCK', | |
| 453 186: 'KEY_SEMICOLON', | |
| 454 187: 'KEY_EQUALS_SIGN', | |
| 455 188: 'KEY_COMMA', | |
| 456 189: 'KEY_HYPHEN-MINUS', | |
| 457 190: 'KEY_FULL_STOP', | |
| 458 191: 'KEY_SOLIDUS', | |
| 459 192: 'KEY_GRAVE_ACCENT', | |
| 460 219: 'KEY_LEFT_SQUARE_BRACKET', | |
| 461 220: 'KEY_REVERSE_SOLIDUS', | |
| 462 221: 'KEY_RIGHT_SQUARE_BRACKET', | |
| 463 222: 'KEY_APOSTROPHE' | |
| 464 // undefined: 'KEY_UNKNOWN' | |
| 465 }; | |
| 466 | |
| 467 (function () { | |
| 468 /* for KEY_0 - KEY_9 */ | |
| 469 var _specialKeys = MochiKit.Signal._specialKeys; | |
| 470 for (var i = 48; i <= 57; i++) { | |
| 471 _specialKeys[i] = 'KEY_' + (i - 48); | |
| 472 } | |
| 473 | |
| 474 /* for KEY_A - KEY_Z */ | |
| 475 for (i = 65; i <= 90; i++) { | |
| 476 _specialKeys[i] = 'KEY_' + String.fromCharCode(i); | |
| 477 } | |
| 478 | |
| 479 /* for KEY_NUM_PAD_0 - KEY_NUM_PAD_9 */ | |
| 480 for (i = 96; i <= 105; i++) { | |
| 481 _specialKeys[i] = 'KEY_NUM_PAD_' + (i - 96); | |
| 482 } | |
| 483 | |
| 484 /* for KEY_F1 - KEY_F12 */ | |
| 485 for (i = 112; i <= 123; i++) { | |
| 486 // no F0 | |
| 487 _specialKeys[i] = 'KEY_F' + (i - 112 + 1); | |
| 488 } | |
| 489 })(); | |
| 490 | |
| 491 /* Internal object to keep track of created signals. */ | |
| 492 MochiKit.Signal.Ident = function (ident) { | |
| 493 this.source = ident.source; | |
| 494 this.signal = ident.signal; | |
| 495 this.listener = ident.listener; | |
| 496 this.isDOM = ident.isDOM; | |
| 497 this.objOrFunc = ident.objOrFunc; | |
| 498 this.funcOrStr = ident.funcOrStr; | |
| 499 this.connected = ident.connected; | |
| 500 }; | |
| 501 | |
| 502 MochiKit.Signal.Ident.prototype = {}; | |
| 503 | |
| 504 MochiKit.Base.update(MochiKit.Signal, { | |
| 505 | |
| 506 __repr__: function () { | |
| 507 return '[' + this.NAME + ' ' + this.VERSION + ']'; | |
| 508 }, | |
| 509 | |
| 510 toString: function () { | |
| 511 return this.__repr__(); | |
| 512 }, | |
| 513 | |
| 514 _unloadCache: function () { | |
| 515 var self = MochiKit.Signal; | |
| 516 var observers = self._observers; | |
| 517 | |
| 518 for (var i = 0; i < observers.length; i++) { | |
| 519 if (observers[i].signal !== 'onload' && observers[i].signal !== 'onunload') { | |
| 520 self._disconnect(observers[i]); | |
| 521 } | |
| 522 } | |
| 523 }, | |
| 524 | |
| 525 _listener: function (src, sig, func, obj, isDOM) { | |
| 526 var self = MochiKit.Signal; | |
| 527 var E = self.Event; | |
| 528 if (!isDOM) { | |
| 529 /* We don't want to re-bind already bound methods */ | |
| 530 if (typeof(func.im_self) == 'undefined') { | |
| 531 return MochiKit.Base.bindLate(func, obj); | |
| 532 } else { | |
| 533 return func; | |
| 534 } | |
| 535 } | |
| 536 obj = obj || src; | |
| 537 if (typeof(func) == "string") { | |
| 538 if (sig === 'onload' || sig === 'onunload') { | |
| 539 return function (nativeEvent) { | |
| 540 obj[func].apply(obj, [new E(src, nativeEvent)]); | |
| 541 | |
| 542 var ident = new MochiKit.Signal.Ident({ | |
| 543 source: src, signal: sig, objOrFunc: obj, funcOrStr: func}); | |
| 544 | |
| 545 MochiKit.Signal._disconnect(ident); | |
| 546 }; | |
| 547 } else { | |
| 548 return function (nativeEvent) { | |
| 549 obj[func].apply(obj, [new E(src, nativeEvent)]); | |
| 550 }; | |
| 551 } | |
| 552 } else { | |
| 553 if (sig === 'onload' || sig === 'onunload') { | |
| 554 return function (nativeEvent) { | |
| 555 func.apply(obj, [new E(src, nativeEvent)]); | |
| 556 | |
| 557 var ident = new MochiKit.Signal.Ident({ | |
| 558 source: src, signal: sig, objOrFunc: func}); | |
| 559 | |
| 560 MochiKit.Signal._disconnect(ident); | |
| 561 }; | |
| 562 } else { | |
| 563 return function (nativeEvent) { | |
| 564 func.apply(obj, [new E(src, nativeEvent)]); | |
| 565 }; | |
| 566 } | |
| 567 } | |
| 568 }, | |
| 569 | |
| 570 _browserAlreadyHasMouseEnterAndLeave: function () { | |
| 571 return /MSIE/.test(navigator.userAgent); | |
| 572 }, | |
| 573 | |
| 574 _browserLacksMouseWheelEvent: function () { | |
| 575 return /Gecko\//.test(navigator.userAgent); | |
| 576 }, | |
| 577 | |
| 578 _mouseEnterListener: function (src, sig, func, obj) { | |
| 579 var E = MochiKit.Signal.Event; | |
| 580 return function (nativeEvent) { | |
| 581 var e = new E(src, nativeEvent); | |
| 582 try { | |
| 583 e.relatedTarget().nodeName; | |
| 584 } catch (err) { | |
| 585 /* probably hit a permission denied error; possibly one of | |
| 586 * firefox's screwy anonymous DIVs inside an input element. | |
| 587 * Allow this event to propogate up. | |
| 588 */ | |
| 589 return; | |
| 590 } | |
| 591 e.stop(); | |
| 592 if (MochiKit.DOM.isChildNode(e.relatedTarget(), src)) { | |
| 593 /* We've moved between our node and a child. Ignore. */ | |
| 594 return; | |
| 595 } | |
| 596 e.type = function () { return sig; }; | |
| 597 if (typeof(func) == "string") { | |
| 598 return obj[func].apply(obj, [e]); | |
| 599 } else { | |
| 600 return func.apply(obj, [e]); | |
| 601 } | |
| 602 }; | |
| 603 }, | |
| 604 | |
| 605 _getDestPair: function (objOrFunc, funcOrStr) { | |
| 606 var obj = null; | |
| 607 var func = null; | |
| 608 if (typeof(funcOrStr) != 'undefined') { | |
| 609 obj = objOrFunc; | |
| 610 func = funcOrStr; | |
| 611 if (typeof(funcOrStr) == 'string') { | |
| 612 if (typeof(objOrFunc[funcOrStr]) != "function") { | |
| 613 throw new Error("'funcOrStr' must be a function on 'objOrFunc'"); | |
| 614 } | |
| 615 } else if (typeof(funcOrStr) != 'function') { | |
| 616 throw new Error("'funcOrStr' must be a function or string"); | |
| 617 } | |
| 618 } else if (typeof(objOrFunc) != "function") { | |
| 619 throw new Error("'objOrFunc' must be a function if 'funcOrStr' is not given"); | |
| 620 } else { | |
| 621 func = objOrFunc; | |
| 622 } | |
| 623 return [obj, func]; | |
| 624 }, | |
| 625 | |
| 626 /** @id MochiKit.Signal.connect */ | |
| 627 connect: function (src, sig, objOrFunc/* optional */, funcOrStr) { | |
| 628 src = MochiKit.DOM.getElement(src); | |
| 629 var self = MochiKit.Signal; | |
| 630 | |
| 631 if (typeof(sig) != 'string') { | |
| 632 throw new Error("'sig' must be a string"); | |
| 633 } | |
| 634 | |
| 635 var destPair = self._getDestPair(objOrFunc, funcOrStr); | |
| 636 var obj = destPair[0]; | |
| 637 var func = destPair[1]; | |
| 638 if (typeof(obj) == 'undefined' || obj === null) { | |
| 639 obj = src; | |
| 640 } | |
| 641 | |
| 642 var isDOM = !!(src.addEventListener || src.attachEvent); | |
| 643 if (isDOM && (sig === "onmouseenter" || sig === "onmouseleave") | |
| 644 && !self._browserAlreadyHasMouseEnterAndLeave()) { | |
| 645 var listener = self._mouseEnterListener(src, sig.substr(2), func, obj); | |
| 646 if (sig === "onmouseenter") { | |
| 647 sig = "onmouseover"; | |
| 648 } else { | |
| 649 sig = "onmouseout"; | |
| 650 } | |
| 651 } else if (isDOM && sig == "onmousewheel" && self._browserLacksMouseWheelEvent()) { | |
| 652 var listener = self._listener(src, sig, func, obj, isDOM); | |
| 653 sig = "onDOMMouseScroll"; | |
| 654 } else { | |
| 655 var listener = self._listener(src, sig, func, obj, isDOM); | |
| 656 } | |
| 657 | |
| 658 if (src.addEventListener) { | |
| 659 src.addEventListener(sig.substr(2), listener, false); | |
| 660 } else if (src.attachEvent) { | |
| 661 src.attachEvent(sig, listener); // useCapture unsupported | |
| 662 } | |
| 663 | |
| 664 var ident = new MochiKit.Signal.Ident({ | |
| 665 source: src, | |
| 666 signal: sig, | |
| 667 listener: listener, | |
| 668 isDOM: isDOM, | |
| 669 objOrFunc: objOrFunc, | |
| 670 funcOrStr: funcOrStr, | |
| 671 connected: true | |
| 672 }); | |
| 673 self._observers.push(ident); | |
| 674 | |
| 675 if (!isDOM && typeof(src.__connect__) == 'function') { | |
| 676 var args = MochiKit.Base.extend([ident], arguments, 1); | |
| 677 src.__connect__.apply(src, args); | |
| 678 } | |
| 679 | |
| 680 return ident; | |
| 681 }, | |
| 682 | |
| 683 _disconnect: function (ident) { | |
| 684 // already disconnected | |
| 685 if (!ident.connected) { | |
| 686 return; | |
| 687 } | |
| 688 ident.connected = false; | |
| 689 var src = ident.source; | |
| 690 var sig = ident.signal; | |
| 691 var listener = ident.listener; | |
| 692 // check isDOM | |
| 693 if (!ident.isDOM) { | |
| 694 if (typeof(src.__disconnect__) == 'function') { | |
| 695 src.__disconnect__(ident, sig, ident.objOrFunc, ident.funcOrStr); | |
| 696 } | |
| 697 return; | |
| 698 } | |
| 699 if (src.removeEventListener) { | |
| 700 src.removeEventListener(sig.substr(2), listener, false); | |
| 701 } else if (src.detachEvent) { | |
| 702 src.detachEvent(sig, listener); // useCapture unsupported | |
| 703 } else { | |
| 704 throw new Error("'src' must be a DOM element"); | |
| 705 } | |
| 706 }, | |
| 707 | |
| 708 /** @id MochiKit.Signal.disconnect */ | |
| 709 disconnect: function (ident) { | |
| 710 var self = MochiKit.Signal; | |
| 711 var observers = self._observers; | |
| 712 var m = MochiKit.Base; | |
| 713 if (arguments.length > 1) { | |
| 714 // compatibility API | |
| 715 var src = MochiKit.DOM.getElement(arguments[0]); | |
| 716 var sig = arguments[1]; | |
| 717 var obj = arguments[2]; | |
| 718 var func = arguments[3]; | |
| 719 for (var i = observers.length - 1; i >= 0; i--) { | |
| 720 var o = observers[i]; | |
| 721 if (o.source === src && o.signal === sig && o.objOrFunc === obj && o.funcOrStr === func) { | |
| 722 self._disconnect(o); | |
| 723 if (!self._lock) { | |
| 724 observers.splice(i, 1); | |
| 725 } else { | |
| 726 self._dirty = true; | |
| 727 } | |
| 728 return true; | |
| 729 } | |
| 730 } | |
| 731 } else { | |
| 732 var idx = m.findIdentical(observers, ident); | |
| 733 if (idx >= 0) { | |
| 734 self._disconnect(ident); | |
| 735 if (!self._lock) { | |
| 736 observers.splice(idx, 1); | |
| 737 } else { | |
| 738 self._dirty = true; | |
| 739 } | |
| 740 return true; | |
| 741 } | |
| 742 } | |
| 743 return false; | |
| 744 }, | |
| 745 | |
| 746 /** @id MochiKit.Signal.disconnectAllTo */ | |
| 747 disconnectAllTo: function (objOrFunc, /* optional */funcOrStr) { | |
| 748 var self = MochiKit.Signal; | |
| 749 var observers = self._observers; | |
| 750 var disconnect = self._disconnect; | |
| 751 var locked = self._lock; | |
| 752 var dirty = self._dirty; | |
| 753 if (typeof(funcOrStr) === 'undefined') { | |
| 754 funcOrStr = null; | |
| 755 } | |
| 756 for (var i = observers.length - 1; i >= 0; i--) { | |
| 757 var ident = observers[i]; | |
| 758 if (ident.objOrFunc === objOrFunc && | |
| 759 (funcOrStr === null || ident.funcOrStr === funcOrStr)) { | |
| 760 disconnect(ident); | |
| 761 if (locked) { | |
| 762 dirty = true; | |
| 763 } else { | |
| 764 observers.splice(i, 1); | |
| 765 } | |
| 766 } | |
| 767 } | |
| 768 self._dirty = dirty; | |
| 769 }, | |
| 770 | |
| 771 /** @id MochiKit.Signal.disconnectAll */ | |
| 772 disconnectAll: function (src/* optional */, sig) { | |
| 773 src = MochiKit.DOM.getElement(src); | |
| 774 var m = MochiKit.Base; | |
| 775 var signals = m.flattenArguments(m.extend(null, arguments, 1)); | |
| 776 var self = MochiKit.Signal; | |
| 777 var disconnect = self._disconnect; | |
| 778 var observers = self._observers; | |
| 779 var i, ident; | |
| 780 var locked = self._lock; | |
| 781 var dirty = self._dirty; | |
| 782 if (signals.length === 0) { | |
| 783 // disconnect all | |
| 784 for (i = observers.length - 1; i >= 0; i--) { | |
| 785 ident = observers[i]; | |
| 786 if (ident.source === src) { | |
| 787 disconnect(ident); | |
| 788 if (!locked) { | |
| 789 observers.splice(i, 1); | |
| 790 } else { | |
| 791 dirty = true; | |
| 792 } | |
| 793 } | |
| 794 } | |
| 795 } else { | |
| 796 var sigs = {}; | |
| 797 for (i = 0; i < signals.length; i++) { | |
| 798 sigs[signals[i]] = true; | |
| 799 } | |
| 800 for (i = observers.length - 1; i >= 0; i--) { | |
| 801 ident = observers[i]; | |
| 802 if (ident.source === src && ident.signal in sigs) { | |
| 803 disconnect(ident); | |
| 804 if (!locked) { | |
| 805 observers.splice(i, 1); | |
| 806 } else { | |
| 807 dirty = true; | |
| 808 } | |
| 809 } | |
| 810 } | |
| 811 } | |
| 812 self._dirty = dirty; | |
| 813 }, | |
| 814 | |
| 815 /** @id MochiKit.Signal.signal */ | |
| 816 signal: function (src, sig) { | |
| 817 var self = MochiKit.Signal; | |
| 818 var observers = self._observers; | |
| 819 src = MochiKit.DOM.getElement(src); | |
| 820 var args = MochiKit.Base.extend(null, arguments, 2); | |
| 821 var errors = []; | |
| 822 self._lock = true; | |
| 823 for (var i = 0; i < observers.length; i++) { | |
| 824 var ident = observers[i]; | |
| 825 if (ident.source === src && ident.signal === sig && | |
| 826 ident.connected) { | |
| 827 try { | |
| 828 ident.listener.apply(src, args); | |
| 829 } catch (e) { | |
| 830 errors.push(e); | |
| 831 } | |
| 832 } | |
| 833 } | |
| 834 self._lock = false; | |
| 835 if (self._dirty) { | |
| 836 self._dirty = false; | |
| 837 for (var i = observers.length - 1; i >= 0; i--) { | |
| 838 if (!observers[i].connected) { | |
| 839 observers.splice(i, 1); | |
| 840 } | |
| 841 } | |
| 842 } | |
| 843 if (errors.length == 1) { | |
| 844 throw errors[0]; | |
| 845 } else if (errors.length > 1) { | |
| 846 var e = new Error("Multiple errors thrown in handling 'sig', see errors property"); | |
| 847 e.errors = errors; | |
| 848 throw e; | |
| 849 } | |
| 850 } | |
| 851 | |
| 852 }); | |
| 853 | |
| 854 MochiKit.Signal.EXPORT_OK = []; | |
| 855 | |
| 856 MochiKit.Signal.EXPORT = [ | |
| 857 'connect', | |
| 858 'disconnect', | |
| 859 'signal', | |
| 860 'disconnectAll', | |
| 861 'disconnectAllTo' | |
| 862 ]; | |
| 863 | |
| 864 MochiKit.Signal.__new__ = function (win) { | |
| 865 var m = MochiKit.Base; | |
| 866 this._document = document; | |
| 867 this._window = win; | |
| 868 this._lock = false; | |
| 869 this._dirty = false; | |
| 870 | |
| 871 try { | |
| 872 this.connect(window, 'onunload', this._unloadCache); | |
| 873 } catch (e) { | |
| 874 // pass: might not be a browser | |
| 875 } | |
| 876 | |
| 877 this.EXPORT_TAGS = { | |
| 878 ':common': this.EXPORT, | |
| 879 ':all': m.concat(this.EXPORT, this.EXPORT_OK) | |
| 880 }; | |
| 881 | |
| 882 m.nameFunctions(this); | |
| 883 }; | |
| 884 | |
| 885 MochiKit.Signal.__new__(this); | |
| 886 | |
| 887 // | |
| 888 // XXX: Internet Explorer blows | |
| 889 // | |
| 890 if (MochiKit.__export__) { | |
| 891 connect = MochiKit.Signal.connect; | |
| 892 disconnect = MochiKit.Signal.disconnect; | |
| 893 disconnectAll = MochiKit.Signal.disconnectAll; | |
| 894 signal = MochiKit.Signal.signal; | |
| 895 } | |
| 896 | |
| 897 MochiKit.Base._exportSymbols(this, MochiKit.Signal); |
