| 1 | /*** |
| 2 | |
| 3 | MochiKit.Signal 1.4 |
| 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 | if (typeof(dojo) != 'undefined') { |
| 12 | dojo.provide('MochiKit.Signal'); |
| 13 | dojo.require('MochiKit.Base'); |
| 14 | dojo.require('MochiKit.DOM'); |
| 15 | dojo.require('MochiKit.Style'); |
| 16 | } |
| 17 | if (typeof(JSAN) != 'undefined') { |
| 18 | JSAN.use('MochiKit.Base', []); |
| 19 | JSAN.use('MochiKit.DOM', []); |
| 20 | JSAN.use('MochiKit.Style', []); |
| 21 | } |
| 22 | |
| 23 | try { |
| 24 | if (typeof(MochiKit.Base) == 'undefined') { |
| 25 | throw ''; |
| 26 | } |
| 27 | } catch (e) { |
| 28 | throw 'MochiKit.Signal depends on MochiKit.Base!'; |
| 29 | } |
| 30 | |
| 31 | try { |
| 32 | if (typeof(MochiKit.DOM) == 'undefined') { |
| 33 | throw ''; |
| 34 | } |
| 35 | } catch (e) { |
| 36 | throw 'MochiKit.Signal depends on MochiKit.DOM!'; |
| 37 | } |
| 38 | |
| 39 | try { |
| 40 | if (typeof(MochiKit.Style) == 'undefined') { |
| 41 | throw ''; |
| 42 | } |
| 43 | } catch (e) { |
| 44 | throw 'MochiKit.Signal depends on MochiKit.Style!'; |
| 45 | } |
| 46 | |
| 47 | if (typeof(MochiKit.Signal) == 'undefined') { |
| 48 | MochiKit.Signal = {}; |
| 49 | } |
| 50 | |
| 51 | MochiKit.Signal.NAME = 'MochiKit.Signal'; |
| 52 | MochiKit.Signal.VERSION = '1.4'; |
| 53 | |
| 54 | MochiKit.Signal._observers = []; |
| 55 | |
| 56 | /** @id MochiKit.Signal.Event */ |
| 57 | MochiKit.Signal.Event = function (src, e) { |
| 58 | this._event = e || window.event; |
| 59 | this._src = src; |
| 60 | }; |
| 61 | |
| 62 | MochiKit.Base.update(MochiKit.Signal.Event.prototype, { |
| 63 | |
| 64 | __repr__: function () { |
| 65 | var repr = MochiKit.Base.repr; |
| 66 | var str = '{event(): ' + repr(this.event()) + |
| 67 | ', src(): ' + repr(this.src()) + |
| 68 | ', type(): ' + repr(this.type()) + |
| 69 | ', target(): ' + repr(this.target()); |
| 70 | |
| 71 | if (this.type() && |
| 72 | this.type().indexOf('key') === 0 || |
| 73 | this.type().indexOf('mouse') === 0 || |
| 74 | this.type().indexOf('click') != -1 || |
| 75 | this.type() == 'contextmenu') { |
| 76 | str += ', modifier(): ' + '{alt: ' + repr(this.modifier().alt) + |
| 77 | ', ctrl: ' + repr(this.modifier().ctrl) + |
| 78 | ', meta: ' + repr(this.modifier().meta) + |
| 79 | ', shift: ' + repr(this.modifier().shift) + |
| 80 | ', any: ' + repr(this.modifier().any) + '}'; |
| 81 | } |
| 82 | |
| 83 | if (this.type() && this.type().indexOf('key') === 0) { |
| 84 | str += ', key(): {code: ' + repr(this.key().code) + |
| 85 | ', string: ' + repr(this.key().string) + '}'; |
| 86 | } |
| 87 | |
| 88 | if (this.type() && ( |
| 89 | this.type().indexOf('mouse') === 0 || |
| 90 | this.type().indexOf('click') != -1 || |
| 91 | this.type() == 'contextmenu')) { |
| 92 | |
| 93 | str += ', mouse(): {page: ' + repr(this.mouse().page) + |
| 94 | ', client: ' + repr(this.mouse().client); |
| 95 | |
| 96 | if (this.type() != 'mousemove') { |
| 97 | str += ', button: {left: ' + repr(this.mouse().button.left) + |
| 98 | ', middle: ' + repr(this.mouse().button.middle) + |
| 99 | ', right: ' + repr(this.mouse().button.right) + '}}'; |
| 100 | } else { |
| 101 | str += '}'; |
| 102 | } |
| 103 | } |
| 104 | if (this.type() == 'mouseover' || this.type() == 'mouseout') { |
| 105 | str += ', relatedTarget(): ' + repr(this.relatedTarget()); |
| 106 | } |
| 107 | str += '}'; |
| 108 | return str; |
| 109 | }, |
| 110 | |
| 111 | /** @id MochiKit.Signal.Event.prototype.toString */ |
| 112 | toString: function () { |
| 113 | return this.__repr__(); |
| 114 | }, |
| 115 | |
| 116 | /** @id MochiKit.Signal.Event.prototype.src */ |
| 117 | src: function () { |
| 118 | return this._src; |
| 119 | }, |
| 120 | |
| 121 | /** @id MochiKit.Signal.Event.prototype.event */ |
| 122 | event: function () { |
| 123 | return this._event; |
| 124 | }, |
| 125 | |
| 126 | /** @id MochiKit.Signal.Event.prototype.type */ |
| 127 | type: function () { |
| 128 | return this._event.type || undefined; |
| 129 | }, |
| 130 | |
| 131 | /** @id MochiKit.Signal.Event.prototype.target */ |
| 132 | target: function () { |
| 133 | return this._event.target || this._event.srcElement; |
| 134 | }, |
| 135 | |
| 136 | _relatedTarget: null, |
| 137 | /** @id MochiKit.Signal.Event.prototype.relatedTarget */ |
| 138 | relatedTarget: function () { |
| 139 | if (this._relatedTarget !== null) { |
| 140 | return this._relatedTarget; |
| 141 | } |
| 142 | |
| 143 | var elem = null; |
| 144 | if (this.type() == 'mouseover') { |
| 145 | elem = (this._event.relatedTarget || |
| 146 | this._event.fromElement); |
| 147 | } else if (this.type() == 'mouseout') { |
| 148 | elem = (this._event.relatedTarget || |
| 149 | this._event.toElement); |
| 150 | } |
| 151 | if (elem !== null) { |
| 152 | this._relatedTarget = elem; |
| 153 | return elem; |
| 154 | } |
| 155 | |
| 156 | return undefined; |
| 157 | }, |
| 158 | |
| 159 | _modifier: null, |
| 160 | /** @id MochiKit.Signal.Event.prototype.modifier */ |
| 161 | modifier: function () { |
| 162 | if (this._modifier !== null) { |
| 163 | return this._modifier; |
| 164 | } |
| 165 | var m = {}; |
| 166 | m.alt = this._event.altKey; |
| 167 | m.ctrl = this._event.ctrlKey; |
| 168 | m.meta = this._event.metaKey || false; // IE and Opera punt here |
| 169 | m.shift = this._event.shiftKey; |
| 170 | m.any = m.alt || m.ctrl || m.shift || m.meta; |
| 171 | this._modifier = m; |
| 172 | return m; |
| 173 | }, |
| 174 | |
| 175 | _key: null, |
| 176 | /** @id MochiKit.Signal.Event.prototype.key */ |
| 177 | key: function () { |
| 178 | if (this._key !== null) { |
| 179 | return this._key; |
| 180 | } |
| 181 | var k = {}; |
| 182 | if (this.type() && this.type().indexOf('key') === 0) { |
| 183 | |
| 184 | /* |
| 185 | |
| 186 | If you're looking for a special key, look for it in keydown or |
| 187 | keyup, but never keypress. If you're looking for a Unicode |
| 188 | chracter, look for it with keypress, but never keyup or |
| 189 | keydown. |
| 190 | |
| 191 | Notes: |
| 192 | |
| 193 | FF key event behavior: |
| 194 | key event charCode keyCode |
| 195 | DOWN ku,kd 0 40 |
| 196 | DOWN kp 0 40 |
| 197 | ESC ku,kd 0 27 |
| 198 | ESC kp 0 27 |
| 199 | a ku,kd 0 65 |
| 200 | a kp 97 0 |
| 201 | shift+a ku,kd 0 65 |
| 202 | shift+a kp 65 0 |
| 203 | 1 ku,kd 0 49 |
| 204 | 1 kp 49 0 |
| 205 | shift+1 ku,kd 0 0 |
| 206 | shift+1 kp 33 0 |
| 207 | |
| 208 | IE key event behavior: |
| 209 | (IE doesn't fire keypress events for special keys.) |
| 210 | key event keyCode |
| 211 | DOWN ku,kd 40 |
| 212 | DOWN kp undefined |
| 213 | ESC ku,kd 27 |
| 214 | ESC kp 27 |
| 215 | a ku,kd 65 |
| 216 | a kp 97 |
| 217 | shift+a ku,kd 65 |
| 218 | shift+a kp 65 |
| 219 | 1 ku,kd 49 |
| 220 | 1 kp 49 |
| 221 | shift+1 ku,kd 49 |
| 222 | shift+1 kp 33 |
| 223 | |
| 224 | Safari key event behavior: |
| 225 | (Safari sets charCode and keyCode to something crazy for |
| 226 | special keys.) |
| 227 | key event charCode keyCode |
| 228 | DOWN ku,kd 63233 40 |
| 229 | DOWN kp 63233 63233 |
| 230 | ESC ku,kd 27 27 |
| 231 | ESC kp 27 27 |
| 232 | a ku,kd 97 65 |
| 233 | a kp 97 97 |
| 234 | shift+a ku,kd 65 65 |
| 235 | shift+a kp 65 65 |
| 236 | 1 ku,kd 49 49 |
| 237 | 1 kp 49 49 |
| 238 | shift+1 ku,kd 33 49 |
| 239 | shift+1 kp 33 33 |
| 240 | |
| 241 | */ |
| 242 | |
| 243 | /* look for special keys here */ |
| 244 | if (this.type() == 'keydown' || this.type() == 'keyup') { |
| 245 | k.code = this._event.keyCode; |
| 246 | k.string = (MochiKit.Signal._specialKeys[k.code] || |
| 247 | 'KEY_UNKNOWN'); |
| 248 | this._key = k; |
| 249 | return k; |
| 250 | |
| 251 | /* look for characters here */ |
| 252 | } else if (this.type() == 'keypress') { |
| 253 | |
| 254 | /* |
| 255 | |
| 256 | Special key behavior: |
| 257 | |
| 258 | IE: does not fire keypress events for special keys |
| 259 | FF: sets charCode to 0, and sets the correct keyCode |
| 260 | Safari: sets keyCode and charCode to something stupid |
| 261 | |
| 262 | */ |
| 263 | |
| 264 | k.code = 0; |
| 265 | k.string = ''; |
| 266 | |
| 267 | if (typeof(this._event.charCode) != 'undefined' && |
| 268 | this._event.charCode !== 0 && |
| 269 | !MochiKit.Signal._specialMacKeys[this._event.charCode]) { |
| 270 | k.code = this._event.charCode; |
| 271 | k.string = String.fromCharCode(k.code); |
| 272 | } else if (this._event.keyCode && |
| 273 | typeof(this._event.charCode) == 'undefined') { // IE |
| 274 | k.code = this._event.keyCode; |
| 275 | k.string = String.fromCharCode(k.code); |
| 276 | } |
| 277 | |
| 278 | this._key = k; |
| 279 | return k; |
| 280 | } |
| 281 | } |
| 282 | return undefined; |
| 283 | }, |
| 284 | |
| 285 | _mouse: null, |
| 286 | /** @id MochiKit.Signal.Event.prototype.mouse */ |
| 287 | mouse: function () { |
| 288 | if (this._mouse !== null) { |
| 289 | return this._mouse; |
| 290 | } |
| 291 | |
| 292 | var m = {}; |
| 293 | var e = this._event; |
| 294 | |
| 295 | if (this.type() && ( |
| 296 | this.type().indexOf('mouse') === 0 || |
| 297 | this.type().indexOf('click') != -1 || |
| 298 | this.type() == 'contextmenu')) { |
| 299 | |
| 300 | m.client = new MochiKit.Style.Coordinates(0, 0); |
| 301 | if (e.clientX || e.clientY) { |
| 302 | m.client.x = (!e.clientX || e.clientX < 0) ? 0 : e.clientX; |
| 303 | m.client.y = (!e.clientY || e.clientY < 0) ? 0 : e.clientY; |
| 304 | } |
| 305 | |
| 306 | m.page = new MochiKit.Style.Coordinates(0, 0); |
| 307 | if (e.pageX || e.pageY) { |
| 308 | m.page.x = (!e.pageX || e.pageX < 0) ? 0 : e.pageX; |
| 309 | m.page.y = (!e.pageY || e.pageY < 0) ? 0 : e.pageY; |
| 310 | } else { |
| 311 | /* |
| 312 | |
| 313 | The IE shortcut can be off by two. We fix it. See: |
| 314 | http://msdn.microsoft.com/workshop/author/dhtml/reference/methods/getboundingclientrect.asp |
| 315 | |
| 316 | This is similar to the method used in |
| 317 | MochiKit.Style.getElementPosition(). |
| 318 | |
| 319 | */ |
| 320 | var de = MochiKit.DOM._document.documentElement; |
| 321 | var b = MochiKit.DOM._document.body; |
| 322 | |
| 323 | m.page.x = e.clientX + |
| 324 | (de.scrollLeft || b.scrollLeft) - |
| 325 | (de.clientLeft || 0); |
| 326 | |
| 327 | m.page.y = e.clientY + |
| 328 | (de.scrollTop || b.scrollTop) - |
| 329 | (de.clientTop || 0); |
| 330 | |
| 331 | } |
| 332 | if (this.type() != 'mousemove') { |
| 333 | m.button = {}; |
| 334 | m.button.left = false; |
| 335 | m.button.right = false; |
| 336 | m.button.middle = false; |
| 337 | |
| 338 | /* we could check e.button, but which is more consistent */ |
| 339 | if (e.which) { |
| 340 | m.button.left = (e.which == 1); |
| 341 | m.button.middle = (e.which == 2); |
| 342 | m.button.right = (e.which == 3); |
| 343 | |
| 344 | /* |
| 345 | |
| 346 | Mac browsers and right click: |
| 347 | |
| 348 | - Safari doesn't fire any click events on a right |
| 349 | click: |
| 350 | http://bugs.webkit.org/show_bug.cgi?id=6595 |
| 351 | |
| 352 | - Firefox fires the event, and sets ctrlKey = true |
| 353 | |
| 354 | - Opera fires the event, and sets metaKey = true |
| 355 | |
| 356 | oncontextmenu is fired on right clicks between |
| 357 | browsers and across platforms. |
| 358 | |
| 359 | */ |
| 360 | |
| 361 | } else { |
| 362 | m.button.left = !!(e.button & 1); |
| 363 | m.button.right = !!(e.button & 2); |
| 364 | m.button.middle = !!(e.button & 4); |
| 365 | } |
| 366 | } |
| 367 | this._mouse = m; |
| 368 | return m; |
| 369 | } |
| 370 | return undefined; |
| 371 | }, |
| 372 | |
| 373 | /** @id MochiKit.Signal.Event.prototype.stop */ |
| 374 | stop: function () { |
| 375 | this.stopPropagation(); |
| 376 | this.preventDefault(); |
| 377 | }, |
| 378 | |
| 379 | /** @id MochiKit.Signal.Event.prototype.stopPropagation */ |
| 380 | stopPropagation: function () { |
| 381 | if (this._event.stopPropagation) { |
| 382 | this._event.stopPropagation(); |
| 383 | } else { |
| 384 | this._event.cancelBubble = true; |
| 385 | } |
| 386 | }, |
| 387 | |
| 388 | /** @id MochiKit.Signal.Event.prototype.preventDefault */ |
| 389 | preventDefault: function () { |
| 390 | if (this._event.preventDefault) { |
| 391 | this._event.preventDefault(); |
| 392 | } else if (this._confirmUnload === null) { |
| 393 | this._event.returnValue = false; |
| 394 | } |
| 395 | }, |
| 396 | |
| 397 | _confirmUnload: null, |
| 398 | |
| 399 | /** @id MochiKit.Signal.Event.prototype.confirmUnload */ |
| 400 | confirmUnload: function (msg) { |
| 401 | if (this.type() == 'beforeunload') { |
| 402 | this._confirmUnload = msg; |
| 403 | this._event.returnValue = msg; |
| 404 | } |
| 405 | } |
| 406 | }); |
| 407 | |
| 408 | /* Safari sets keyCode to these special values onkeypress. */ |
| 409 | MochiKit.Signal._specialMacKeys = { |
| 410 | 3: 'KEY_ENTER', |
| 411 | 63289: 'KEY_NUM_PAD_CLEAR', |
| 412 | 63276: 'KEY_PAGE_UP', |
| 413 | 63277: 'KEY_PAGE_DOWN', |
| 414 | 63275: 'KEY_END', |
| 415 | 63273: 'KEY_HOME', |
| 416 | 63234: 'KEY_ARROW_LEFT', |
| 417 | 63232: 'KEY_ARROW_UP', |
| 418 | 63235: 'KEY_ARROW_RIGHT', |
| 419 | 63233: 'KEY_ARROW_DOWN', |
| 420 | 63302: 'KEY_INSERT', |
| 421 | 63272: 'KEY_DELETE' |
| 422 | }; |
| 423 | |
| 424 | /* for KEY_F1 - KEY_F12 */ |
| 425 | (function () { |
| 426 | var _specialMacKeys = MochiKit.Signal._specialMacKeys; |
| 427 | for (i = 63236; i <= 63242; i++) { |
| 428 | // no F0 |
| 429 | _specialMacKeys[i] = 'KEY_F' + (i - 63236 + 1); |
| 430 | } |
| 431 | })(); |
| 432 | |
| 433 | /* Standard keyboard key codes. */ |
| 434 | MochiKit.Signal._specialKeys = { |
| 435 | 8: 'KEY_BACKSPACE', |
| 436 | 9: 'KEY_TAB', |
| 437 | 12: 'KEY_NUM_PAD_CLEAR', // weird, for Safari and Mac FF only |
| 438 | 13: 'KEY_ENTER', |
| 439 | 16: 'KEY_SHIFT', |
| 440 | 17: 'KEY_CTRL', |
| 441 | 18: 'KEY_ALT', |
| 442 | 19: 'KEY_PAUSE', |
| 443 | 20: 'KEY_CAPS_LOCK', |
| 444 | 27: 'KEY_ESCAPE', |
| 445 | 32: 'KEY_SPACEBAR', |
| 446 | 33: 'KEY_PAGE_UP', |
| 447 | 34: 'KEY_PAGE_DOWN', |
| 448 | 35: 'KEY_END', |
| 449 | 36: 'KEY_HOME', |
| 450 | 37: 'KEY_ARROW_LEFT', |
| 451 | 38: 'KEY_ARROW_UP', |
| 452 | 39: 'KEY_ARROW_RIGHT', |
| 453 | 40: 'KEY_ARROW_DOWN', |
| 454 | 44: 'KEY_PRINT_SCREEN', |
| 455 | 45: 'KEY_INSERT', |
| 456 | 46: 'KEY_DELETE', |
| 457 | 59: 'KEY_SEMICOLON', // weird, for Safari and IE only |
| 458 | 91: 'KEY_WINDOWS_LEFT', |
| 459 | 92: 'KEY_WINDOWS_RIGHT', |
| 460 | 93: 'KEY_SELECT', |
| 461 | 106: 'KEY_NUM_PAD_ASTERISK', |
| 462 | 107: 'KEY_NUM_PAD_PLUS_SIGN', |
| 463 | 109: 'KEY_NUM_PAD_HYPHEN-MINUS', |
| 464 | 110: 'KEY_NUM_PAD_FULL_STOP', |
| 465 | 111: 'KEY_NUM_PAD_SOLIDUS', |
| 466 | 144: 'KEY_NUM_LOCK', |
| 467 | 145: 'KEY_SCROLL_LOCK', |
| 468 | 186: 'KEY_SEMICOLON', |
| 469 | 187: 'KEY_EQUALS_SIGN', |
| 470 | 188: 'KEY_COMMA', |
| 471 | 189: 'KEY_HYPHEN-MINUS', |
| 472 | 190: 'KEY_FULL_STOP', |
| 473 | 191: 'KEY_SOLIDUS', |
| 474 | 192: 'KEY_GRAVE_ACCENT', |
| 475 | 219: 'KEY_LEFT_SQUARE_BRACKET', |
| 476 | 220: 'KEY_REVERSE_SOLIDUS', |
| 477 | 221: 'KEY_RIGHT_SQUARE_BRACKET', |
| 478 | 222: 'KEY_APOSTROPHE' |
| 479 | // undefined: 'KEY_UNKNOWN' |
| 480 | }; |
| 481 | |
| 482 | (function () { |
| 483 | /* for KEY_0 - KEY_9 */ |
| 484 | var _specialKeys = MochiKit.Signal._specialKeys; |
| 485 | for (var i = 48; i <= 57; i++) { |
| 486 | _specialKeys[i] = 'KEY_' + (i - 48); |
| 487 | } |
| 488 | |
| 489 | /* for KEY_A - KEY_Z */ |
| 490 | for (i = 65; i <= 90; i++) { |
| 491 | _specialKeys[i] = 'KEY_' + String.fromCharCode(i); |
| 492 | } |
| 493 | |
| 494 | /* for KEY_NUM_PAD_0 - KEY_NUM_PAD_9 */ |
| 495 | for (i = 96; i <= 105; i++) { |
| 496 | _specialKeys[i] = 'KEY_NUM_PAD_' + (i - 96); |
| 497 | } |
| 498 | |
| 499 | /* for KEY_F1 - KEY_F12 */ |
| 500 | for (i = 112; i <= 123; i++) { |
| 501 | // no F0 |
| 502 | _specialKeys[i] = 'KEY_F' + (i - 112 + 1); |
| 503 | } |
| 504 | })(); |
| 505 | |
| 506 | /* Internal object to keep track of created signals. */ |
| 507 | MochiKit.Signal.Ident = function (ident) { |
| 508 | this.source = ident.source; |
| 509 | this.signal = ident.signal; |
| 510 | this.listener = ident.listener; |
| 511 | this.isDOM = ident.isDOM; |
| 512 | this.objOrFunc = ident.objOrFunc; |
| 513 | this.funcOrStr = ident.funcOrStr; |
| 514 | this.connected = ident.connected; |
| 515 | }; |
| 516 | |
| 517 | MochiKit.Signal.Ident.prototype = {}; |
| 518 | |
| 519 | MochiKit.Base.update(MochiKit.Signal, { |
| 520 | |
| 521 | __repr__: function () { |
| 522 | return '[' + this.NAME + ' ' + this.VERSION + ']'; |
| 523 | }, |
| 524 | |
| 525 | toString: function () { |
| 526 | return this.__repr__(); |
| 527 | }, |
| 528 | |
| 529 | _unloadCache: function () { |
| 530 | var self = MochiKit.Signal; |
| 531 | var observers = self._observers; |
| 532 | |
| 533 | for (var i = 0; i < observers.length; i++) { |
| 534 | if (observers[i].signal !== 'onload' && observers[i].signal !== 'onunload') { |
| 535 | self._disconnect(observers[i]); |
| 536 | } |
| 537 | } |
| 538 | }, |
| 539 | |
| 540 | _listener: function (src, sig, func, obj, isDOM) { |
| 541 | var self = MochiKit.Signal; |
| 542 | var E = self.Event; |
| 543 | if (!isDOM) { |
| 544 | return MochiKit.Base.bind(func, obj); |
| 545 | } |
| 546 | obj = obj || src; |
| 547 | if (typeof(func) == "string") { |
| 548 | if (sig === 'onload' || sig === 'onunload') { |
| 549 | return function (nativeEvent) { |
| 550 | obj[func].apply(obj, [new E(src, nativeEvent)]); |
| 551 | |
| 552 | var ident = new MochiKit.Signal.Ident({ |
| 553 | source: src, signal: sig, objOrFunc: obj, funcOrStr: func}); |
| 554 | |
| 555 | MochiKit.Signal._disconnect(ident); |
| 556 | }; |
| 557 | } else { |
| 558 | return function (nativeEvent) { |
| 559 | obj[func].apply(obj, [new E(src, nativeEvent)]); |
| 560 | }; |
| 561 | } |
| 562 | } else { |
| 563 | if (sig === 'onload' || sig === 'onunload') { |
| 564 | return function (nativeEvent) { |
| 565 | func.apply(obj, [new E(src, nativeEvent)]); |
| 566 | MochiKit.Signal.disconnect(src, sig, func); |
| 567 | |
| 568 | var ident = new MochiKit.Signal.Ident({ |
| 569 | source: src, signal: sig, objOrFunc: func}); |
| 570 | |
| 571 | MochiKit.Signal._disconnect(ident); |
| 572 | }; |
| 573 | } else { |
| 574 | return function (nativeEvent) { |
| 575 | func.apply(obj, [new E(src, nativeEvent)]); |
| 576 | }; |
| 577 | } |
| 578 | } |
| 579 | }, |
| 580 | |
| 581 | _browserAlreadyHasMouseEnterAndLeave: function () { |
| 582 | return /MSIE/.test(navigator.userAgent); |
| 583 | }, |
| 584 | |
| 585 | _mouseEnterListener: function (src, sig, func, obj) { |
| 586 | var E = MochiKit.Signal.Event; |
| 587 | return function (nativeEvent) { |
| 588 | var e = new E(src, nativeEvent); |
| 589 | try { |
| 590 | e.relatedTarget().nodeName; |
| 591 | } catch (err) { |
| 592 | /* probably hit a permission denied error; possibly one of |
| 593 | * firefox's screwy anonymous DIVs inside an input element. |
| 594 | * Allow this event to propogate up. |
| 595 | */ |
| 596 | return; |
| 597 | } |
| 598 | e.stop(); |
| 599 | if (MochiKit.DOM.isChildNode(e.relatedTarget(), src)) { |
| 600 | /* We've moved between our node and a child. Ignore. */ |
| 601 | return; |
| 602 | } |
| 603 | e.type = function () { return sig; }; |
| 604 | if (typeof(func) == "string") { |
| 605 | return obj[func].apply(obj, [e]); |
| 606 | } else { |
| 607 | return func.apply(obj, [e]); |
| 608 | } |
| 609 | }; |
| 610 | }, |
| 611 | |
| 612 | _getDestPair: function (objOrFunc, funcOrStr) { |
| 613 | var obj = null; |
| 614 | var func = null; |
| 615 | if (typeof(funcOrStr) != 'undefined') { |
| 616 | obj = objOrFunc; |
| 617 | func = funcOrStr; |
| 618 | if (typeof(funcOrStr) == 'string') { |
| 619 | if (typeof(objOrFunc[funcOrStr]) != "function") { |
| 620 | throw new Error("'funcOrStr' must be a function on 'objOrFunc'"); |
| 621 | } |
| 622 | } else if (typeof(funcOrStr) != 'function') { |
| 623 | throw new Error("'funcOrStr' must be a function or string"); |
| 624 | } |
| 625 | } else if (typeof(objOrFunc) != "function") { |
| 626 | throw new Error("'objOrFunc' must be a function if 'funcOrStr' is not given"); |
| 627 | } else { |
| 628 | func = objOrFunc; |
| 629 | } |
| 630 | return [obj, func]; |
| 631 | }, |
| 632 | |
| 633 | /** @id MochiKit.Signal.connect */ |
| 634 | connect: function (src, sig, objOrFunc/* optional */, funcOrStr) { |
| 635 | src = MochiKit.DOM.getElement(src); |
| 636 | var self = MochiKit.Signal; |
| 637 | |
| 638 | if (typeof(sig) != 'string') { |
| 639 | throw new Error("'sig' must be a string"); |
| 640 | } |
| 641 | |
| 642 | var destPair = self._getDestPair(objOrFunc, funcOrStr); |
| 643 | var obj = destPair[0]; |
| 644 | var func = destPair[1]; |
| 645 | if (typeof(obj) == 'undefined' || obj === null) { |
| 646 | obj = src; |
| 647 | } |
| 648 | |
| 649 | var isDOM = !!(src.addEventListener || src.attachEvent); |
| 650 | if (isDOM && (sig === "onmouseenter" || sig === "onmouseleave") |
| 651 | && !self._browserAlreadyHasMouseEnterAndLeave()) { |
| 652 | var listener = self._mouseEnterListener(src, sig.substr(2), func, obj); |
| 653 | if (sig === "onmouseenter") { |
| 654 | sig = "onmouseover"; |
| 655 | } else { |
| 656 | sig = "onmouseout"; |
| 657 | } |
| 658 | } else { |
| 659 | var listener = self._listener(src, sig, func, obj, isDOM); |
| 660 | } |
| 661 | |
| 662 | if (src.addEventListener) { |
| 663 | src.addEventListener(sig.substr(2), listener, false); |
| 664 | } else if (src.attachEvent) { |
| 665 | src.attachEvent(sig, listener); // useCapture unsupported |
| 666 | } |
| 667 | |
| 668 | var ident = new MochiKit.Signal.Ident({ |
| 669 | source: src, |
| 670 | signal: sig, |
| 671 | listener: listener, |
| 672 | isDOM: isDOM, |
| 673 | objOrFunc: objOrFunc, |
| 674 | funcOrStr: funcOrStr, |
| 675 | connected: true |
| 676 | }); |
| 677 | self._observers.push(ident); |
| 678 | |
| 679 | if (!isDOM && typeof(src.__connect__) == 'function') { |
| 680 | var args = MochiKit.Base.extend([ident], arguments, 1); |
| 681 | src.__connect__.apply(src, args); |
| 682 | } |
| 683 | |
| 684 | return ident; |
| 685 | }, |
| 686 | |
| 687 | _disconnect: function (ident) { |
| 688 | // already disconnected |
| 689 | if (!ident.connected) { |
| 690 | return; |
| 691 | } |
| 692 | ident.connected = false; |
| 693 | // check isDOM |
| 694 | if (!ident.isDOM) { |
| 695 | return; |
| 696 | } |
| 697 | var src = ident.source; |
| 698 | var sig = ident.signal; |
| 699 | var listener = ident.listener; |
| 700 | |
| 701 | if (src.removeEventListener) { |
| 702 | src.removeEventListener(sig.substr(2), listener, false); |
| 703 | } else if (src.detachEvent) { |
| 704 | src.detachEvent(sig, listener); // useCapture unsupported |
| 705 | } else { |
| 706 | throw new Error("'src' must be a DOM element"); |
| 707 | } |
| 708 | }, |
| 709 | |
| 710 | /** @id MochiKit.Signal.disconnect */ |
| 711 | disconnect: function (ident) { |
| 712 | var self = MochiKit.Signal; |
| 713 | var observers = self._observers; |
| 714 | var m = MochiKit.Base; |
| 715 | if (arguments.length > 1) { |
| 716 | // compatibility API |
| 717 | var src = MochiKit.DOM.getElement(arguments[0]); |
| 718 | var sig = arguments[1]; |
| 719 | var obj = arguments[2]; |
| 720 | var func = arguments[3]; |
| 721 | for (var i = observers.length - 1; i >= 0; i--) { |
| 722 | var o = observers[i]; |
| 723 | if (o.source === src && o.signal === sig && o.objOrFunc === obj && o.funcOrStr === func) { |
| 724 | self._disconnect(o); |
| 725 | if (!self._lock) { |
| 726 | observers.splice(i, 1); |
| 727 | } else { |
| 728 | self._dirty = true; |
| 729 | } |
| 730 | return true; |
| 731 | } |
| 732 | } |
| 733 | } else { |
| 734 | var idx = m.findIdentical(observers, ident); |
| 735 | if (idx >= 0) { |
| 736 | self._disconnect(ident); |
| 737 | if (!self._lock) { |
| 738 | observers.splice(idx, 1); |
| 739 | } else { |
| 740 | self._dirty = true; |
| 741 | } |
| 742 | return true; |
| 743 | } |
| 744 | } |
| 745 | return false; |
| 746 | }, |
| 747 | |
| 748 | /** @id MochiKit.Signal.disconnectAllTo */ |
| 749 | disconnectAllTo: function (objOrFunc, /* optional */funcOrStr) { |
| 750 | var self = MochiKit.Signal; |
| 751 | var observers = self._observers; |
| 752 | var disconnect = self._disconnect; |
| 753 | var locked = self._lock; |
| 754 | var dirty = self._dirty; |
| 755 | if (typeof(funcOrStr) === 'undefined') { |
| 756 | funcOrStr = null; |
| 757 | } |
| 758 | for (var i = observers.length - 1; i >= 0; i--) { |
| 759 | var ident = observers[i]; |
| 760 | if (ident.objOrFunc === objOrFunc && |
| 761 | (funcOrStr === null || ident.funcOrStr === funcOrStr)) { |
| 762 | disconnect(ident); |
| 763 | if (locked) { |
| 764 | dirty = true; |
| 765 | } else { |
| 766 | observers.splice(i, 1); |
| 767 | } |
| 768 | } |
| 769 | } |
| 770 | self._dirty = dirty; |
| 771 | }, |
| 772 | |
| 773 | /** @id MochiKit.Signal.disconnectAll */ |
| 774 | disconnectAll: function (src/* optional */, sig) { |
| 775 | src = MochiKit.DOM.getElement(src); |
| 776 | var m = MochiKit.Base; |
| 777 | var signals = m.flattenArguments(m.extend(null, arguments, 1)); |
| 778 | var self = MochiKit.Signal; |
| 779 | var disconnect = self._disconnect; |
| 780 | var observers = self._observers; |
| 781 | var i, ident; |
| 782 | var locked = self._lock; |
| 783 | var dirty = self._dirty; |
| 784 | if (signals.length === 0) { |
| 785 | // disconnect all |
| 786 | for (i = observers.length - 1; i >= 0; i--) { |
| 787 | ident = observers[i]; |
| 788 | if (ident.source === src) { |
| 789 | disconnect(ident); |
| 790 | if (!locked) { |
| 791 | observers.splice(i, 1); |
| 792 | } else { |
| 793 | dirty = true; |
| 794 | } |
| 795 | } |
| 796 | } |
| 797 | } else { |
| 798 | var sigs = {}; |
| 799 | for (i = 0; i < signals.length; i++) { |
| 800 | sigs[signals[i]] = true; |
| 801 | } |
| 802 | for (i = observers.length - 1; i >= 0; i--) { |
| 803 | ident = observers[i]; |
| 804 | if (ident.source === src && ident.signal in sigs) { |
| 805 | disconnect(ident); |
| 806 | if (!locked) { |
| 807 | observers.splice(i, 1); |
| 808 | } else { |
| 809 | dirty = true; |
| 810 | } |
| 811 | } |
| 812 | } |
| 813 | } |
| 814 | self._dirty = dirty; |
| 815 | }, |
| 816 | |
| 817 | /** @id MochiKit.Signal.signal */ |
| 818 | signal: function (src, sig) { |
| 819 | var self = MochiKit.Signal; |
| 820 | var observers = self._observers; |
| 821 | src = MochiKit.DOM.getElement(src); |
| 822 | var args = MochiKit.Base.extend(null, arguments, 2); |
| 823 | var errors = []; |
| 824 | self._lock = true; |
| 825 | for (var i = 0; i < observers.length; i++) { |
| 826 | var ident = observers[i]; |
| 827 | if (ident.source === src && ident.signal === sig) { |
| 828 | try { |
| 829 | ident.listener.apply(src, args); |
| 830 | } catch (e) { |
| 831 | errors.push(e); |
| 832 | } |
| 833 | } |
| 834 | } |
| 835 | self._lock = false; |
| 836 | if (self._dirty) { |
| 837 | self._dirty = false; |
| 838 | for (var i = observers.length - 1; i >= 0; i--) { |
| 839 | if (!observers[i].connected) { |
| 840 | observers.splice(i, 1); |
| 841 | } |
| 842 | } |
| 843 | } |
| 844 | if (errors.length == 1) { |
| 845 | throw errors[0]; |
| 846 | } else if (errors.length > 1) { |
| 847 | var e = new Error("Multiple errors thrown in handling 'sig', see errors property"); |
| 848 | e.errors = errors; |
| 849 | throw e; |
| 850 | } |
| 851 | } |
| 852 | |
| 853 | }); |
| 854 | |
| 855 | MochiKit.Signal.EXPORT_OK = []; |
| 856 | |
| 857 | MochiKit.Signal.EXPORT = [ |
| 858 | 'connect', |
| 859 | 'disconnect', |
| 860 | 'signal', |
| 861 | 'disconnectAll', |
| 862 | 'disconnectAllTo' |
| 863 | ]; |
| 864 | |
| 865 | MochiKit.Signal.__new__ = function (win) { |
| 866 | var m = MochiKit.Base; |
| 867 | this._document = document; |
| 868 | this._window = win; |
| 869 | this._lock = false; |
| 870 | this._dirty = false; |
| 871 | |
| 872 | try { |
| 873 | this.connect(window, 'onunload', this._unloadCache); |
| 874 | } catch (e) { |
| 875 | // pass: might not be a browser |
| 876 | } |
| 877 | |
| 878 | this.EXPORT_TAGS = { |
| 879 | ':common': this.EXPORT, |
| 880 | ':all': m.concat(this.EXPORT, this.EXPORT_OK) |
| 881 | }; |
| 882 | |
| 883 | m.nameFunctions(this); |
| 884 | }; |
| 885 | |
| 886 | MochiKit.Signal.__new__(this); |
| 887 | |
| 888 | // |
| 889 | // XXX: Internet Explorer blows |
| 890 | // |
| 891 | if (MochiKit.__export__) { |
| 892 | connect = MochiKit.Signal.connect; |
| 893 | disconnect = MochiKit.Signal.disconnect; |
| 894 | disconnectAll = MochiKit.Signal.disconnectAll; |
| 895 | signal = MochiKit.Signal.signal; |
| 896 | } |
| 897 | |
| 898 | MochiKit.Base._exportSymbols(this, MochiKit.Signal); |