lib/yui/imagecropper/imagecropper-beta-debug.js

   1 /*
   2 Copyright (c) 2008, Yahoo! Inc. All rights reserved.
   3 Code licensed under the BSD License:
   4 http://developer.yahoo.net/yui/license.txt
   5 version: 2.5.2
   6 */
   7 /**
   8  * @description <p>Creates a Image Cropper control.</p>
   9  * @namespace YAHOO.widget
  10  * @requires yahoo, dom, dragdrop, element, event, resize
  11  * @module imagecropper
  12  * @beta
  13  */
  14 (function() {
  15 var Dom = YAHOO.util.Dom,
  16     Event = YAHOO.util.Event,
  17     Lang = YAHOO.lang;
  18
  19     /**
  20      * @constructor
  21      * @class ImageCropper
  22      * @description <p>Creates a Image Cropper control.</p>
  23      * @extends YAHOO.util.Element
  24      * @param {String/HTMLElement} el The image element to make croppable.
  25      * @param {Object} attrs Object liternal containing configuration parameters.
  26     */
  27     var Crop = function(el, config) {
  28         YAHOO.log('Initializing', 'log', 'ImageCropper');
  29         var oConfig = {
  30             element: el,
  31             attributes: config || {}
  32         };
  33
  34         Crop.superclass.constructor.call(this, oConfig.element, oConfig.attributes);
  35     };
  36
  37     /**
  38     * @private
  39     * @static
  40     * @property _instances
  41     * @description Internal hash table for all ImageCropper instances
  42     * @type Object
  43     */
  44     Crop._instances = {};
  45     /**
  46     * @static
  47     * @method getCropperById
  48     * @description Get's an ImageCropper object by the HTML id of the image associated with the ImageCropper object.
  49     * @return {Object} The ImageCropper Object
  50     */
  51     Crop.getCropperById = function(id) {
  52         if (Crop._instances[id]) {
  53             return Crop._instances[id];
  54         }
  55         return false;
  56     };
  57
  58     YAHOO.extend(Crop, YAHOO.util.Element, {
  59         /**
  60         * @private
  61         * @property CSS_MAIN
  62         * @description The CSS class used to wrap the element
  63         * @type String
  64         */
  65         CSS_MAIN: 'yui-crop',
  66         /**
  67         * @private
  68         * @property CSS_MASK
  69         * @description The CSS class for the mask element
  70         * @type String
  71         */
  72         CSS_MASK: 'yui-crop-mask',
  73         /**
  74         * @private
  75         * @property CSS_RESIZE_MASK
  76         * @description The CSS class for the mask inside the resize element
  77         * @type String
  78         */
  79         CSS_RESIZE_MASK: 'yui-crop-resize-mask',
  80
  81         /**
  82         * @private
  83         * @property _image
  84         * @description The url of the image we are cropping
  85         * @type String
  86         */
  87         _image: null,
  88         /**
  89         * @private
  90         * @property _active
  91         * @description Flag to determine if the crop region is active
  92         * @type Boolean
  93         */
  94         _active: null,
  95         /**
  96         * @private
  97         * @property _resize
  98         * @description A reference to the Resize Utility used in this Cropper Instance
  99         * @type Object
 100         */
 101         _resize: null,
 102         /**
 103         * @private
 104         * @property _resizeEl
 105         * @description The HTML Element used to create the Resize Oject
 106         * @type HTMLElement
 107         */
 108         _resizeEl: null,
 109         /**
 110         * @private
 111         * @property _resizeMaskEl
 112         * @description The HTML Element used to create the Resize mask
 113         * @type HTMLElement
 114         */
 115         _resizeMaskEl: null,
 116         /**
 117         * @private
 118         * @property _wrap
 119         * @description The HTML Element created to wrap the image
 120         * @type HTMLElement
 121         */
 122         _wrap: null,
 123         /**
 124         * @private
 125         * @property _mask
 126         * @description The HTML Element created to "mask" the image being cropped
 127         * @type HTMLElement
 128         */
 129         _mask: null,
 130         /**
 131         * @private
 132         * @method _createWrap
 133         * @description Creates the wrapper element used to wrap the image
 134         */
 135         _createWrap: function() {
 136             YAHOO.log('Creating the wrap element', 'log', 'ImageCropper');
 137             this._wrap = document.createElement('div');
 138             this._wrap.id = this.get('element').id + '_wrap';
 139             this._wrap.className = this.CSS_MAIN;
 140             var el = this.get('element');
 141             this._wrap.style.width = el.width ? el.width + 'px' : Dom.getStyle(el, 'width');
 142             this._wrap.style.height = el.height ? el.height + 'px' : Dom.getStyle(el, 'height');
 143
 144             var par = this.get('element').parentNode;
 145             par.replaceChild(this._wrap, this.get('element'));
 146             this._wrap.appendChild(this.get('element'));
 147
 148             Event.on(this._wrap, 'mouseover', this._handleMouseOver, this, true);
 149             Event.on(this._wrap, 'mouseout', this._handleMouseOut, this, true);
 150
 151             Event.on(this._wrap, 'click', function(ev) { Event.stopEvent(ev); }, this, true);
 152         },
 153
 154         /**
 155         * @private
 156         * @method _createMask
 157         * @description Creates the mask element used to mask the image
 158         */
 159         _createMask: function() {
 160             YAHOO.log('Creating the Mask', 'log', 'ImageCropper');
 161             this._mask = document.createElement('div');
 162             this._mask.className = this.CSS_MASK;
 163             this._wrap.appendChild(this._mask);
 164         },
 165
 166         /**
 167         * @private
 168         * @method _createResize
 169         * @description Creates the resize element and the instance of the Resize Utility
 170         */
 171         _createResize: function() {
 172             YAHOO.log('Creating the Resize element', 'log', 'ImageCropper');
 173             this._resizeEl = document.createElement('div');
 174             this._resizeEl.className = YAHOO.util.Resize.prototype.CSS_RESIZE;
 175             this._resizeEl.style.position = 'absolute';
 176
 177             this._resizeEl.innerHTML = '<div class="' + this.CSS_RESIZE_MASK + '"></div>';
 178             this._resizeMaskEl = this._resizeEl.firstChild;
 179             this._wrap.appendChild(this._resizeEl);
 180             this._resizeEl.style.top = this.get('initialXY')[1] + 'px';
 181             this._resizeEl.style.left = this.get('initialXY')[0] + 'px';
 182             this._resizeMaskEl.style.height = Math.floor(this.get('initHeight')) + 'px';
 183             this._resizeMaskEl.style.width = Math.floor(this.get('initWidth')) + 'px';
 184
 185             this._resize = new YAHOO.util.Resize(this._resizeEl, {
 186                 knobHandles: true,
 187                 handles: 'all',
 188                 draggable: true,
 189                 status: this.get('status'),
 190                 minWidth: this.get('minWidth'),
 191                 minHeight: this.get('minHeight'),
 192                 ratio: this.get('ratio'),
 193                 autoRatio: this.get('autoRatio'),
 194                 height: this.get('initHeight'),
 195                 width: this.get('initWidth')
 196             });
 197
 198             this._setBackgroundImage(this.get('element').getAttribute('src', 2));
 199             this._setBackgroundPosition(-(this.get('initialXY')[0]),  -(this.get('initialXY')[1]));
 200
 201             this._resize.on('startResize', this._handleStartResizeEvent, this, true);
 202             this._resize.on('endResize', this._handleEndResizeEvent, this, true);
 203             this._resize.on('dragEvent', this._handleDragEvent, this, true);
 204             this._resize.on('beforeResize', this._handleBeforeResizeEvent, this, true);
 205             this._resize.on('resize', this._handleResizeEvent, this, true);
 206             this._resize.dd.on('b4StartDragEvent', this._handleB4DragEvent, this, true);
 207         },
 208
 209         /**
 210         * @private
 211         * @method _handleMouseOver
 212         * @description Handles the mouseover event
 213         */
 214         _handleMouseOver: function(ev) {
 215             var evType = 'keydown';
 216             if (YAHOO.env.ua.gecko || YAHOO.env.ua.opera) {
 217                 evType = 'keypress';
 218             }
 219             if (!this._active) {
 220                 this._active = true;
 221                 if (this.get('useKeys')) {
 222                     Event.on(document, evType, this._handleKeyPress, this, true);
 223                 }
 224             }
 225         },
 226         /**
 227         * @private
 228         * @method _handleMouseOut
 229         * @description Handles the mouseout event
 230         */
 231         _handleMouseOut: function(ev) {
 232             var evType = 'keydown';
 233             if (YAHOO.env.ua.gecko || YAHOO.env.ua.opera) {
 234                 evType = 'keypress';
 235             }
 236             this._active = false;
 237             if (this.get('useKeys')) {
 238                 Event.removeListener(document, evType, this._handleKeyPress);
 239             }
 240         },
 241
 242         /**
 243         * @private
 244         * @method _moveEl
 245         * @description Moves the resize element based on the arrow keys
 246         */
 247         _moveEl: function(dir, inc) {
 248             YAHOO.log('Moving the element', 'log', 'ImageCropper');
 249             var t = 0, l = 0,
 250                 region = this._setConstraints(),
 251                 resize = true;
 252
 253             switch (dir) {
 254                 case 'down':
 255                     t = -(inc);
 256                     if ((region.bottom - inc) < 0) {
 257                         resize = false;
 258                         this._resizeEl.style.top = (region.top + region.bottom) + 'px';
 259                     }
 260                     break;
 261                 case 'up':
 262                     t = (inc);
 263                     if ((region.top - inc) < 0) {
 264                         resize = false;
 265                         this._resizeEl.style.top = '0px';
 266                     }
 267                     break;
 268                 case 'right':
 269                     l = -(inc);
 270                     if ((region.right - inc) < 0) {
 271                         resize = false;
 272                         this._resizeEl.style.left = (region.left + region.right) + 'px';
 273                     }
 274                     break;
 275                 case 'left':
 276                     l = inc;
 277                     if ((region.left - inc) < 0) {
 278                         resize = false;
 279                         this._resizeEl.style.left = '0px';
 280                     }
 281                     break;
 282             }
 283
 284             if (resize) {
 285                 YAHOO.log('Moving via Key Listener: ' + dir, 'log', 'ImageCropper');
 286                 this._resizeEl.style.left = (parseInt(this._resizeEl.style.left, 10) - l) + 'px';
 287                 this._resizeEl.style.top = (parseInt(this._resizeEl.style.top, 10) - t) + 'px';
 288                 this.fireEvent('moveEvent', { target: 'keypress' });
 289             } else {
 290                 this._setConstraints();
 291             }
 292             this._syncBackgroundPosition();
 293         },
 294
 295         /**
 296         * @private
 297         * @method _handleKeyPress
 298         * @description Handles the keypress event
 299         */
 300         _handleKeyPress: function(ev) {
 301             var kc = Event.getCharCode(ev),
 302                 stopEvent = false,
 303                 inc = ((ev.shiftKey) ? this.get('shiftKeyTick') : this.get('keyTick'));
 304
 305             switch (kc) {
 306                 case 0x25: // left
 307                     this._moveEl('left', inc);
 308                     stopEvent = true;
 309                     break;
 310                 case 0x26: // up
 311                     this._moveEl('up', inc);
 312                     stopEvent = true;
 313                     break;
 314                 case 0x27: // right
 315                     this._moveEl('right', inc);
 316                     stopEvent = true;
 317                     break;
 318                 case 0x28: // down
 319                     this._moveEl('down', inc);
 320                     stopEvent = true;
 321                     break;
 322                 default:
 323             }
 324             if (stopEvent) {
 325                 Event.preventDefault(ev);
 326             }
 327         },
 328
 329         /**
 330         * @private
 331         * @method _handleB4DragEvent
 332         * @description Handles the DragDrop b4DragEvent event
 333         */
 334         _handleB4DragEvent: function() {
 335             this._setConstraints();
 336         },
 337
 338         /**
 339         * @private
 340         * @method _handleDragEvent
 341         * @description Handles the DragDrop DragEvent event
 342         */
 343         _handleDragEvent: function() {
 344             this._syncBackgroundPosition();
 345             this.fireEvent('dragEvent', arguments);
 346             this.fireEvent('moveEvent', { target: 'dragevent' });
 347         },
 348
 349         /**
 350         * @private
 351         * @method _handleBeforeResizeEvent
 352         * @description Handles the Resize Utilitys beforeResize event
 353         */
 354         _handleBeforeResizeEvent: function(args) {
 355             var region = Dom.getRegion(this.get('element')),
 356                 c = this._resize._cache,
 357                 ch = this._resize._currentHandle, h = 0, w = 0;
 358
 359             if (args.top && (args.top < region.top)) {
 360                 h = (c.height + c.top) - region.top;
 361                 Dom.setY(this._resize.getWrapEl(), region.top);
 362                 this._resize.getWrapEl().style.height = h + 'px';
 363                 this._resize._cache.height = h;
 364                 this._resize._cache.top = region.top;
 365                 this._syncBackgroundPosition();
 366                 return false;
 367             }
 368             if (args.left && (args.left < region.left)) {
 369                 w = (c.width + c.left) - region.left;
 370                 Dom.setX(this._resize.getWrapEl(), region.left);
 371                 this._resize._cache.left = region.left;
 372                 this._resize.getWrapEl().style.width = w + 'px';
 373                 this._resize._cache.width = w;
 374                 this._syncBackgroundPosition();
 375                 return false;
 376             }
 377             if (ch != 'tl' && ch != 'l' && ch != 'bl') {
 378                 if (c.left && args.width && ((c.left + args.width) > region.right)) {
 379                     w = (region.right - c.left);
 380                     Dom.setX(this._resize.getWrapEl(), (region.right - w));
 381                     this._resize.getWrapEl().style.width = w + 'px';
 382                     this._resize._cache.left = (region.right - w);
 383                     this._resize._cache.width = w;
 384                     this._syncBackgroundPosition();
 385                     return false;
 386                 }
 387             }
 388             if (ch != 't' && ch != 'tr' && ch != 'tl') {
 389                 if (c.top && args.height && ((c.top + args.height) > region.bottom)) {
 390                     h = (region.bottom - c.top);
 391                     Dom.setY(this._resize.getWrapEl(), (region.bottom - h));
 392                     this._resize.getWrapEl().style.height = h + 'px';
 393                     this._resize._cache.height = h;
 394                     this._resize._cache.top = (region.bottom - h);
 395                     this._syncBackgroundPosition();
 396                     return false;
 397                 }
 398             }
 399         },
 400         /**
 401         * @private
 402         * @method _handleResizeMaskEl
 403         * @description Resizes the inner mask element
 404         */
 405         _handleResizeMaskEl: function() {
 406             var a = this._resize._cache;
 407             this._resizeMaskEl.style.height = Math.floor(a.height) + 'px';
 408             this._resizeMaskEl.style.width = Math.floor(a.width) + 'px';
 409         },
 410         /**
 411         * @private
 412         * @method _handleResizeEvent
 413         * @param Event ev The Resize Utilitys resize event.
 414         * @description Handles the Resize Utilitys Resize event
 415         */
 416         _handleResizeEvent: function(ev) {
 417             this._setConstraints(true);
 418             this._syncBackgroundPosition();
 419             this.fireEvent('resizeEvent', arguments);
 420             this.fireEvent('moveEvent', { target: 'resizeevent' });
 421         },
 422
 423         /**
 424         * @private
 425         * @method _syncBackgroundPosition
 426         * @description Syncs the packground position of the resize element with the resize elements top and left style position
 427         */
 428         _syncBackgroundPosition: function() {
 429             this._handleResizeMaskEl();
 430             this._setBackgroundPosition(-(parseInt(this._resizeEl.style.left, 10)), -(parseInt(this._resizeEl.style.top, 10)));
 431         },
 432
 433         /**
 434         * @private
 435         * @method _setBackgroundPosition
 436         * @param Number l The left position
 437         * @param Number t The top position
 438         * @description Sets the background image position to the top and left position
 439         */
 440         _setBackgroundPosition: function(l, t) {
 441             //YAHOO.log('Setting the image background position of the mask to: (' + l + ', ' + t + ')', 'log', 'ImageCropper');
 442             var bl = parseInt(Dom.getStyle(this._resize.get('element'), 'borderLeftWidth'), 10);
 443             var bt = parseInt(Dom.getStyle(this._resize.get('element'), 'borderTopWidth'), 10);
 444             var mask = this._resize.getWrapEl().firstChild;
 445             var pos = (l - bl) + 'px ' + (t - bt) + 'px';
 446             this._resizeMaskEl.style.backgroundPosition = pos;
 447         },
 448
 449         /**
 450         * @private
 451         * @method _setBackgroundImage
 452         * @param String url The url of the image
 453         * @description Sets the background image of the resize element
 454         */
 455         _setBackgroundImage: function(url) {
 456             YAHOO.log('Setting the background image', 'log', 'ImageCropper');
 457             var mask = this._resize.getWrapEl().firstChild;
 458             this._image = url;
 459             mask.style.backgroundImage = 'url(' + url + '#)';
 460         },
 461
 462         /**
 463         * @private
 464         * @method _handleEndResizeEvent
 465         * @description Handles the Resize Utilitys endResize event
 466         */
 467         _handleEndResizeEvent: function() {
 468             this._setConstraints(true);
 469         },
 470         /**
 471         * @private
 472         * @method _handleStartResizeEvent
 473         * @description Handles the Resize Utilitys startResize event
 474         */
 475         _handleStartResizeEvent: function() {
 476             this._setConstraints(true);
 477
 478             var h = this._resize._cache.height,
 479                  w = this._resize._cache.width,
 480                  t = parseInt(this._resize.getWrapEl().style.top, 10),
 481                  l = parseInt(this._resize.getWrapEl().style.left, 10),
 482                  maxH = 0, maxW = 0;
 483
 484             switch (this._resize._currentHandle) {
 485                 case 'b':
 486                     maxH = (h + this._resize.dd.bottomConstraint);
 487                     break;
 488                 case 'l':
 489                     maxW = (w + this._resize.dd.leftConstraint);
 490                     break;
 491                 case 'r':
 492                     maxH = (h + t);
 493                     maxW = (w + this._resize.dd.rightConstraint);
 494                     break;
 495                  case 'br':
 496                      maxH = (h + this._resize.dd.bottomConstraint);
 497                      maxW = (w + this._resize.dd.rightConstraint);
 498                      break;
 499                  case 'tr':
 500                      maxH = (h + t);
 501                      maxW = (w + this._resize.dd.rightConstraint);
 502                      break;
 503
 504              }
 505
 506              if (maxH) {
 507                 YAHOO.log('Setting the maxHeight on the resize object to: ' + maxH, 'log', 'ImageCropper');
 508                  //this._resize.set('maxHeight', maxH);
 509              }
 510              if (maxW) {
 511                 YAHOO.log('Setting the maxWidth on the resize object to: ' + maxW, 'log', 'ImageCropper');
 512                  //this._resize.set('maxWidth', maxW);
 513              }
 514
 515             this.fireEvent('startResizeEvent', arguments);
 516         },
 517
 518         /**
 519         * @private
 520         * @method _setConstraints
 521         * @param Boolean inside Used when called from inside a resize event, false by default (dragging)
 522         * @description Set the DragDrop constraints to keep the element inside the crop area.
 523         * @return {Object} Object containing Top, Right, Bottom and Left constraints
 524         */
 525         _setConstraints: function(inside) {
 526             YAHOO.log('Setting Contraints', 'log', 'ImageCropper');
 527             var resize = this._resize;
 528             resize.dd.resetConstraints();
 529             var height = parseInt(resize.get('height'), 10),
 530                 width = parseInt(resize.get('width'), 10);
 531             if (inside) {
 532                 //Called from inside the resize callback
 533                 height = resize._cache.height;
 534                 width = resize._cache.width;
 535             }
 536
 537             //Get the top, right, bottom and left positions
 538             var region = Dom.getRegion(this.get('element'));
 539             //Get the element we are working on
 540             var el = resize.getWrapEl();
 541
 542             //Get the xy position of it
 543             var xy = Dom.getXY(el);
 544
 545             //Set left to x minus left
 546             var left = xy[0] - region.left;
 547
 548             //Set right to right minus x minus width
 549             var right = region.right - xy[0] - width;
 550
 551             //Set top to y minus top
 552             var top = xy[1] - region.top;
 553
 554             //Set bottom to bottom minus y minus height
 555             var bottom = region.bottom - xy[1] - height;
 556
 557             if (top < 0) {
 558                 top = 0;
 559             }
 560
 561             resize.dd.setXConstraint(left, right);
 562             resize.dd.setYConstraint(top, bottom);
 563             YAHOO.log('Constraints: ' + top + ',' + right + ',' + bottom + ',' + left, 'log', 'ImageCropper');
 564
 565             return {
 566                 top: top,
 567                 right: right,
 568                 bottom: bottom,
 569                 left: left
 570             };
 571
 572
 573
 574         },
 575         /**
 576         * @method getCropCoords
 577         * @description Returns the coordinates needed to crop the image
 578         * @return {Object} The top, left, height, width and image url of the image being cropped
 579         */
 580         getCropCoords: function() {
 581             var coords = {
 582                 top: parseInt(this._resize.getWrapEl().style.top, 10),
 583                 left: parseInt(this._resize.getWrapEl().style.left, 10),
 584                 height: this._resize._cache.height,
 585                 width: this._resize._cache.width,
 586                 image: this._image
 587             };
 588             YAHOO.log('Getting the crop coordinates: ' + Lang.dump(coords), 'log', 'ImageCropper');
 589             return coords;
 590         },
 591         /**
 592         * @method reset
 593         * @description Resets the crop element back to it's original position
 594         * @return {<a href="YAHOO.widget.ImageCropper.html">YAHOO.widget.ImageCropper</a>} The ImageCropper instance
 595         */
 596         reset: function() {
 597             YAHOO.log('Resetting the control', 'log', 'ImageCropper');
 598             this._resize.resize(null, this.get('initHeight'), this.get('initWidth'), 0, 0, true);
 599             this._resizeEl.style.top = this.get('initialXY')[1] + 'px';
 600             this._resizeEl.style.left = this.get('initialXY')[0] + 'px';
 601             this._syncBackgroundPosition();
 602             return this;
 603         },
 604
 605         /**
 606         * @method getEl
 607         * @description Get the HTML reference for the image element.
 608         * @return {HTMLElement} The image element
 609         */
 610         getEl: function() {
 611             return this.get('element');
 612         },
 613         /**
 614         * @method getResizeEl
 615         * @description Get the HTML reference for the resize element.
 616         * @return {HTMLElement} The resize element
 617         */
 618         getResizeEl: function() {
 619             return this._resizeEl;
 620         },
 621         /**
 622         * @method getWrapEl
 623         * @description Get the HTML reference for the wrap element.
 624         * @return {HTMLElement} The wrap element
 625         */
 626         getWrapEl: function() {
 627             return this._wrap;
 628         },
 629
 630         /**
 631         * @method getMaskEl
 632         * @description Get the HTML reference for the mask element.
 633         * @return {HTMLElement} The mask element
 634         */
 635         getMaskEl: function() {
 636             return this._mask;
 637         },
 638
 639         /**
 640         * @method getResizeMaskEl
 641         * @description Get the HTML reference for the resizable object's mask element.
 642         * @return {HTMLElement} The resize objects mask element.
 643         */
 644         getResizeMaskEl: function() {
 645             return this._resizeMaskEl;
 646         },
 647
 648         /**
 649         * @method getResizeObject
 650         * @description Get the Resize Utility object.
 651         * @return {<a href="YAHOO.util.Resize.html">YAHOO.util.Resize</a>} The Resize instance
 652         */
 653         getResizeObject: function() {
 654             return this._resize;
 655         },
 656
 657         /**
 658         * @private
 659         * @method init
 660         * @description The ImageCropper class's initialization method
 661         */
 662         init: function(p_oElement, p_oAttributes) {
 663             YAHOO.log('init', 'info', 'ImageCropper');
 664             Crop.superclass.init.call(this, p_oElement, p_oAttributes);
 665
 666             var id = p_oElement;
 667
 668             if (!Lang.isString(id)) {
 669                 if (id.tagName && (id.tagName.toLowerCase() == 'img')) {
 670                     id = Dom.generateId(id);
 671                 } else {
 672                     YAHOO.log('Element is not an image.', 'error', 'ImageCropper');
 673                     return false;
 674                 }
 675             } else {
 676                 var el = Dom.get(id);
 677                 if (el.tagName && el.tagName.toLowerCase() == 'img') {
 678                     //All good
 679                 } else {
 680                     YAHOO.log('Element is not an image.', 'error', 'ImageCropper');
 681                     return false;
 682                 }
 683             }
 684
 685
 686
 687             Crop._instances[id] = this;
 688             this._createWrap();
 689             this._createMask();
 690             this._createResize();
 691             this._setConstraints();
 692
 693         },
 694         /**
 695         * @private
 696         * @method initAttributes
 697         * @description Initializes all of the configuration attributes used to create a croppable element.
 698         * @param {Object} attr Object literal specifying a set of
 699         * configuration attributes used to create the widget.
 700         */
 701
 702         initAttributes: function(attr) {
 703             Crop.superclass.initAttributes.call(this, attr);
 704
 705             /**
 706             * @attribute initialXY
 707             * @description Array of the XY position that we need to set the crop element to when we build it. Defaults to [10, 10]
 708             * @type Array
 709             */
 710             this.setAttributeConfig('initialXY', {
 711                 writeOnce: true,
 712                 validator: YAHOO.lang.isArray,
 713                 value: attr.initialXY || [10, 10]
 714             });
 715             /**
 716             * @attribute keyTick
 717             * @description The pixel tick for the arrow keys, defaults to 1
 718             * @type Number
 719             */
 720             this.setAttributeConfig('keyTick', {
 721                 validator: YAHOO.lang.isNumber,
 722                 value: attr.keyTick || 1
 723             });
 724
 725             /**
 726             * @attribute shiftKeyTick
 727             * @description The pixel tick for shift + the arrow keys, defaults to 10
 728             * @type Number
 729             */
 730             this.setAttributeConfig('shiftKeyTick', {
 731                 validator: YAHOO.lang.isNumber,
 732                 value: attr.shiftKeyTick || 10
 733             });
 734
 735             /**
 736             * @attribute useKeys
 737             * @description Should we use the Arrow keys to position the crop element, defaults to true
 738             * @type Boolean
 739             */
 740             this.setAttributeConfig('useKeys', {
 741                 validator: YAHOO.lang.isBoolean,
 742                 value: ((attr.useKeys === false) ? false : true)
 743             });
 744
 745             /**
 746             * @attribute status
 747             * @description Show the Resize Utility status, defaults to true
 748             * @type Boolean
 749             */
 750             this.setAttributeConfig('status', {
 751                 validator: YAHOO.lang.isBoolean,
 752                 value: ((attr.status === false) ? false : true),
 753                 method: function(status) {
 754                     if (this._resize) {
 755                         this._resize.set('status', status);
 756                     }
 757                 }
 758             });
 759
 760             /**
 761             * @attribute minHeight
 762             * @description MinHeight of the crop area, default 50
 763             * @type Number
 764             */
 765             this.setAttributeConfig('minHeight', {
 766                 validator: YAHOO.lang.isNumber,
 767                 value: attr.minHeight || 50,
 768                 method: function(h) {
 769                     if (this._resize) {
 770                         this._resize.set('minHeight', h);
 771                     }
 772                 }
 773             });
 774
 775             /**
 776             * @attribute minWidth
 777             * @description MinWidth of the crop area, default 50.
 778             * @type Number
 779             */
 780             this.setAttributeConfig('minWidth', {
 781                 validator: YAHOO.lang.isNumber,
 782                 value: attr.minWidth || 50,
 783                 method: function(w) {
 784                     if (this._resize) {
 785                         this._resize.set('minWidth', w);
 786                     }
 787                 }
 788             });
 789
 790             /**
 791             * @attribute ratio
 792             * @description Set the ratio config option of the Resize Utlility, default false
 793             * @type Boolean
 794             */
 795             this.setAttributeConfig('ratio', {
 796                 validator: YAHOO.lang.isBoolean,
 797                 value: attr.ratio || false,
 798                 method: function(r) {
 799                     if (this._resize) {
 800                         this._resize.set('ratio', r);
 801                     }
 802                 }
 803             });
 804
 805             /**
 806             * @attribute ratio
 807             * @description Set the autoRatio config option of the Resize Utlility, default true
 808             * @type Boolean
 809             */
 810             this.setAttributeConfig('autoRatio', {
 811                 validator: YAHOO.lang.isBoolean,
 812                 value: ((attr.autoRatio === false) ? false : true),
 813                 method: function(a) {
 814                     if (this._resize) {
 815                         this._resize.set('autoRatio', a);
 816                     }
 817                 }
 818             });
 819
 820             /**
 821             * @attribute initHeight
 822             * @description Set the initlal height of the crop area, defaults to 1/4 of the image height
 823             * @type Number
 824             */
 825             this.setAttributeConfig('initHeight', {
 826                 writeOnce: true,
 827                 validator: YAHOO.lang.isNumber,
 828                 value: attr.initHeight || (this.get('element').height / 4)
 829             });
 830
 831             /**
 832             * @attribute initWidth
 833             * @description Set the initlal width of the crop area, defaults to 1/4 of the image width
 834             * @type Number
 835             */
 836             this.setAttributeConfig('initWidth', {
 837                 validator: YAHOO.lang.isNumber,
 838                 writeOnce: true,
 839                 value: attr.initWidth || (this.get('element').width / 4)
 840             });
 841
 842         },
 843         /**
 844         * @method destroy
 845         * @description Destroys the ImageCropper object and all of it's elements & listeners.
 846         */
 847         destroy: function() {
 848             YAHOO.log('Destroying the ImageCropper', 'info', 'ImageCropper');
 849             this._resize.destroy();
 850             this._resizeEl.parentNode.removeChild(this._resizeEl);
 851             this._mask.parentNode.removeChild(this._mask);
 852             Event.purgeElement(this._wrap);
 853             this._wrap.parentNode.replaceChild(this.get('element'), this._wrap);
 854
 855             //Brutal Object Destroy
 856             for (var i in this) {
 857                 if (Lang.hasOwnProperty(this, i)) {
 858                     this[i] = null;
 859                 }
 860             }
 861
 862         },
 863         /**
 864         * @method toString
 865         * @description Returns a string representing the ImageCropper Object.
 866         * @return {String}
 867         */
 868         toString: function() {
 869             if (this.get) {
 870                 return 'ImageCropper (#' + this.get('id') + ')';
 871             }
 872             return 'Image Cropper';
 873         }
 874     });
 875
 876     YAHOO.widget.ImageCropper = Crop;
 877
 878 /**
 879 * @event dragEvent
 880 * @description Fires when the DragDrop dragEvent
 881 * @type YAHOO.util.CustomEvent
 882 */
 883 /**
 884 * @event startResizeEvent
 885 * @description Fires when when a resize action is started.
 886 * @type YAHOO.util.CustomEvent
 887 */
 888 /**
 889 * @event resizeEvent
 890 * @description Fires on every element resize.
 891 * @type YAHOO.util.CustomEvent
 892 */
 893 /**
 894 * @event moveEvent
 895 * @description Fires on every element move. Inside these methods: _handleKeyPress, _handleDragEvent, _handleResizeEvent
 896 * @type YAHOO.util.CustomEvent
 897 */
 898
 899 })();
 900
 901 YAHOO.register("imagecropper", YAHOO.widget.ImageCropper, {version: "2.5.2", build: "1076"});