skins/photo_film_viewer.js

   1 /*
   2 * © 2008-2014 Benoît Pin – Centre de recherche en informatique – MINES ParisTech
   3 * http://plinn.org
   4 * Licence Creative Commons http://creativecommons.org/licenses/by-nc/2.0/
   5 *
   6 *
   7 */
   8
   9 var FilmSlider;
  10
  11 (function(){
  12
  13 var keyLeft = 37, keyRight = 39;
  14 var isTextMime = /^text\/.+/i;
  15 var isAddToSelection = /.*\/add_to_selection$/;
  16 var imgRequestedSize = /size=(\d+)/;
  17 var DEFAULT_IMAGE_SIZES = [500, 600, 800];
  18
  19 FilmSlider = function(filmBar, slider, ctxInfos, image, toolbar, breadcrumbs) {
  20         var thisSlider = this;
  21         this.filmBar = filmBar;
  22         var film = filmBar.firstChild;
  23         if (film.nodeType === 3)
  24                 film = film.nextSibling;
  25         this.film = film;
  26         this.slider = slider;
  27         this.rail = slider.parentNode;
  28         this.sliderSpeedRatio = undefined;
  29         this.sliderRatio = undefined;
  30         this.selectedSlide = undefined;
  31         this.selectedSlideInSelection = undefined;
  32         this.cartSlide = document.getElementById('cart_slide');
  33         this.image = image;
  34         this.stretchable = image.parentNode;
  35         this.viewMode = 'medium';
  36
  37         this.buttons = new Array();
  38         this.toolbar = toolbar;
  39         if (breadcrumbs) {
  40                 var bcElements = breadcrumbs.getElementsByTagName('a');
  41                 this.lastBCElement = bcElements[bcElements.length-1];
  42                 var imgSrcParts = image.src.split('/');
  43                 this.lastBCElement.innerHTML = imgSrcParts[imgSrcParts.length-2];
  44                 this.hasBreadcrumbs = true;
  45         }
  46         else {
  47                 this.hasBreadcrumbs = false;
  48         }
  49
  50         var buttons = toolbar.getElementsByTagName('img');
  51         var b, name;
  52         for (var i=0 ; i<buttons.length ; i++) {
  53                 b = buttons[i];
  54                 name = b.getAttribute('name');
  55                 if (name)
  56                         this.buttons[name] = b;
  57         }
  58
  59         this.pendingImage = new Image();
  60         this.pendingImage.onload = function() {
  61                 thisSlider.refreshImage();
  62         };
  63         this.initialized = false;
  64
  65         with(this.slider.style) {
  66                 left='0';
  67                 top='0';
  68         }
  69         with(this.film.style) {
  70                 left='0';
  71                 top='0';
  72         }
  73
  74         this.filmLength = ctxInfos.filmLength;
  75         this.center = ctxInfos.center;
  76         this.slideSize = ctxInfos.slideSize;
  77         this.ctxUrlTranslation = ctxInfos.ctxUrlTranslation;
  78
  79         this.ddHandlers = {'down' : function(evt){thisSlider.mouseDownHandler(evt);},
  80                                            'move' : function(evt){thisSlider.mouseMoveHandler(evt);},
  81                                            'up' :   function(evt){thisSlider.mouseUpHandler(evt);},
  82                                            'out' :  function(evt){thisSlider.mouseOutHandler(evt);}
  83                                           };
  84
  85         this.resizeSlider();
  86         this.addEventListeners()
  87 };
  88
  89
  90 FilmSlider.prototype.resizeSlider = function(evt) {
  91         var filmBarWidth = getObjectWidth(this.filmBar);
  92         if (!filmBarWidth){
  93                 var thisSlider = this;
  94                 addListener(window, 'load', function(evt){thisSlider.resizeSlider(evt);});
  95                 return;
  96         }
  97
  98         var filmWidth = this.slideSize * this.filmLength;
  99         var sliderRatio = this.sliderRatio =  filmBarWidth / filmWidth;
 100         var sliderWidth = filmBarWidth * sliderRatio;
 101         this.rail.style.width = filmBarWidth + 'px';
 102         this.rail.style.display = 'block';
 103         this.rail.style.visibility = 'visible';
 104         if (sliderRatio < 1) {
 105                 this.slider.style.width = Math.round(sliderWidth) + 'px';
 106                 this.slider.style.visibility = 'visible';
 107         }
 108         else {
 109                 this.slider.style.visibility = 'hidden';
 110         }
 111
 112         this.winSize = {'width'  : getWindowWidth(),
 113                                         'height' : getWindowHeight()};
 114         this.maxRightPosition = filmBarWidth - sliderWidth
 115         this.sliderSpeedRatio = - (filmBarWidth - sliderWidth) / (filmWidth - filmBarWidth);
 116         if (!this.initialized) {
 117                 this.centerSlide(this.center);
 118                 this.selectedSlide = this.filmBar.getElementsByTagName('img')[this.center].parentNode;
 119                 this.initialized = true;
 120         }
 121 };
 122
 123 FilmSlider.prototype.fitToScreen = function(evt) {
 124         this._fitToScreen();
 125         var thisSlider = this;
 126         addListener(window, 'resize', function(evt){thisSlider._fitToScreen();});
 127 };
 128
 129 FilmSlider.prototype._fitToScreen = function(evt) {
 130         var wh = getWindowHeight();
 131         var rb = getObjectTop(this.rail) + getObjectHeight(this.rail); // rail bottom
 132         var delta = wh - rb
 133         var sh = getObjectHeight(this.stretchable);
 134         var newSize = sh + delta;
 135         this.stretchable.style.height = newSize + 'px';
 136
 137         var ratio = this.image.height / this.image.width;
 138         var bestFitSize = this.getBestFitSize(ratio);
 139         var currentSize = parseInt(imgRequestedSize.exec(this.image.src)[1]);
 140         if (currentSize != bestFitSize) {
 141                 var src = this.image.src.replace(imgRequestedSize, 'size=' + bestFitSize);
 142                 this.pendingImage.src = src;
 143         }
 144 };
 145
 146 FilmSlider.prototype.getBestFitSize = function(ratio) {
 147         var fw = getObjectWidth(this.stretchable) - 1;
 148         var fh = getObjectHeight(this.stretchable) - 1;
 149
 150         var i, irw, irh;
 151         if (ratio < 1) {
 152                 for (i=DEFAULT_IMAGE_SIZES.length -1 ; i>0 ; i--) {
 153                         irw = DEFAULT_IMAGE_SIZES[i];
 154                         irh = irw * ratio;
 155                         if (irw <= fw && irh <= fh)
 156                                 break;
 157                 }
 158         }
 159         else {
 160                 for (i=DEFAULT_IMAGE_SIZES.length -1 ; i>0 ; i--) {
 161                         irh = DEFAULT_IMAGE_SIZES[i];
 162                         irw = irh / ratio;
 163                         if (irw <= fw && irh <= fh)
 164                                 break;
 165                 }
 166         }
 167         return DEFAULT_IMAGE_SIZES[i];
 168 };
 169
 170 FilmSlider.prototype.centerSlide = function(slideIndex) {
 171         if (this.sliderRatio > 1)
 172                 return;
 173         var filmBarWidth = getObjectWidth(this.filmBar);
 174         var x = slideIndex * this.slideSize
 175         x = x - (filmBarWidth - this.slideSize) / 2.0;
 176         x = x * this.sliderSpeedRatio;
 177         var p = new Point( -x, 0 )
 178         this.setSliderPosition(p);
 179 };
 180
 181 FilmSlider.prototype.setSliderPosition = function(point) {
 182         if(point.x < 0)
 183                 point.x = 0;
 184         if (point.x > this.maxRightPosition)
 185                 point.x = this.maxRightPosition;
 186         this.slider.style.left = point.x + 'px';
 187         this.setFilmPosition(point);
 188 };
 189
 190 FilmSlider.prototype.setFilmPosition = function(point) {
 191         this.film.style.left = point.x / this.sliderSpeedRatio + 'px';
 192 };
 193
 194 FilmSlider.prototype.getSliderPosition = function() {
 195         var x = parseInt(this.slider.style.left);
 196         var y = parseInt(this.slider.style.top);
 197         var p = new Point(x, y);
 198         return p;
 199 };
 200
 201 FilmSlider.prototype.getFilmPosition = function() {
 202         var x = parseInt(this.film.style.left);
 203         var y = parseInt(this.film.style.top);
 204         var p = new Point(x, y);
 205         return p;
 206 };
 207
 208 FilmSlider.prototype.loadSibling = function(previous) {
 209         var slide = null;
 210         if (previous) {
 211                 slide = this.selectedSlide.parentNode.previousSibling;
 212                 if (slide && slide.nodeType===3)
 213                         slide = slide.previousSibling;
 214         }
 215         else {
 216                 slide = this.selectedSlide.parentNode.nextSibling;
 217                 if (slide && slide.nodeType===3)
 218                         slide = slide.nextSibling;
 219         }
 220
 221         if (!slide)
 222                 return;
 223         else {
 224                 var target = slide.getElementsByTagName('a')[0];
 225                 raiseMouseEvent(target, 'click');
 226                 var index = parseInt(target.getAttribute('portfolio:position'));
 227                 this.centerSlide(index);
 228         }
 229 };
 230
 231 FilmSlider.prototype.addEventListeners = function() {
 232         var thisSlider = this;
 233         addListener(window, 'resize', function(evt){thisSlider.resizeSlider(evt);});
 234         addListener(this.filmBar, 'click', function(evt){thisSlider.thumbnailClickHandler(evt);});
 235         addListener(this.toolbar, 'click', function(evt){thisSlider.toolbarClickHandler(evt);});
 236         addListener(window, 'load', function(evt){thisSlider.fitToScreen(evt);});
 237
 238         // dd listeners
 239         addListener(this.slider, 'mousedown', this.ddHandlers['down']);
 240         if(browser.isDOM2Event){
 241                 if (browser.isAppleWebKit) {
 242                         this.filmBar.addEventListener('mousewheel', function(evt){thisSlider.mouseWheelHandler(evt);}, false);
 243                 }
 244                 else {
 245                         addListener(this.filmBar, 'DOMMouseScroll', function(evt){thisSlider.mouseWheelHandler(evt);});
 246                 }
 247         }
 248         else if (browser.isIE6up) {
 249                 addListener(this.filmBar, 'mousewheel', function(evt){thisSlider.mouseWheelHandler(evt);});
 250         }
 251
 252         addListener(document, 'keydown', function(evt){thisSlider.keyDownHandler(evt);});
 253         addListener(document, 'keypress', function(evt){thisSlider.keyPressHandler(evt);});
 254 };
 255
 256
 257 FilmSlider.prototype.mouseDownHandler = function(evt) {
 258         this.initialClickPoint = new Point(evt.clientX, evt.clientY);
 259         this.initialPosition = this.getSliderPosition();
 260         this.dragInProgress = true;
 261         addListener(document, 'mousemove', this.ddHandlers['move']);
 262         addListener(document, 'mouseup', this.ddHandlers['up']);
 263         addListener(document.body, 'mouseout', this.ddHandlers['out'])
 264
 265 };
 266
 267
 268 FilmSlider.prototype.mouseMoveHandler = function(evt) {
 269         if(!this.dragInProgress)
 270                 return;
 271
 272         clearSelection();
 273         evt = getEventObject(evt);
 274         var currentPoint = new Point(evt.clientX, evt.clientY);
 275         var displacement = currentPoint.diff(this.initialClickPoint);
 276         this.setSliderPosition(this.initialPosition.add(displacement));
 277 };
 278
 279 FilmSlider.prototype.mouseUpHandler = function(evt) {
 280         this.dragInProgress = false;
 281         evt = getEventObject(evt);
 282         this.mouseMoveHandler(evt);
 283 };
 284
 285
 286 FilmSlider.prototype.mouseOutHandler = function(evt) {
 287         evt = getEventObject(evt);
 288         var x = evt.clientX;
 289         var y = evt.clientY;
 290         if (x < 0 ||
 291                 x > this.winSize['width'] ||
 292                 y < 0 ||
 293                 y > this.winSize['height']
 294                 ){
 295                 this.mouseUpHandler(evt);
 296         }
 297 };
 298
 299 FilmSlider.prototype.thumbnailClickHandler = function(evt) {
 300         var target = getTargetedObject(evt);
 301         while (target.tagName != 'A' && target != this.filmBar)
 302                 target = target.parentNode;
 303         if (target.tagName != 'A')
 304                 return;
 305         else {
 306                 if (this.viewMode === 'full') {
 307                         this.mosaique.unload();
 308                         this.mosaique = null;
 309                         this.viewMode = 'medium';
 310                 }
 311                 disableDefault(evt);
 312                 disablePropagation(evt);
 313                 target.blur();
 314         history.pushState(target.href, '', target.href);
 315
 316                 var imgBaseUrl = target.href;
 317                 var canonicalImgUrl;
 318                 if (this.ctxUrlTranslation[0])
 319                         canonicalImgUrl = imgBaseUrl.replace(this.ctxUrlTranslation[0],
 320                                                                                                  this.ctxUrlTranslation[1]);
 321                 else
 322                         canonicalImgUrl = imgBaseUrl;
 323
 324                 var ajaxUrl = imgBaseUrl + '/photo_view_ajax';
 325                 var thisFS = this;
 326
 327                 //this.pendingImage.src = canonicalImgUrl + '/getResizedImage?size=600';
 328                 var thumbnail = target.getElementsByTagName('IMG')[0];
 329                 var bestFitSize = this.getBestFitSize(thumbnail.height/thumbnail.width);
 330                 this.pendingImage.src = canonicalImgUrl + '/getResizedImage?size=' + bestFitSize;
 331
 332                 // update buttons
 333                 var fullScreenLink = this.buttons['full_screen'].parentNode;
 334                 fullScreenLink.href = canonicalImgUrl + '/zoom_view';
 335
 336                 var toggleSelectionBtn = this.buttons['toggle_selection'];
 337                 var toggleSelectionLink = toggleSelectionBtn.parentNode;
 338                 this.selectedSlideInSelection = (target.className==='selected');
 339                 if (this.selectedSlideInSelection) {
 340                         toggleSelectionBtn.src = portal_url() + '/unselect_flag_btn.gif';
 341                         toggleSelectionBtn.alt = toggleSelectionLink.title = 'Retirer de la sélection';
 342                         toggleSelectionLink.href = canonicalImgUrl + '/remove_to_selection';
 343                 }
 344                 else {
 345                         toggleSelectionBtn.src = portal_url() + '/select_flag_btn.gif';
 346                         toggleSelectionBtn.alt = toggleSelectionLink.title = 'Ajouter à la sélection';
 347                         toggleSelectionLink.href = canonicalImgUrl + '/add_to_selection';
 348                 }
 349
 350                 var showBuyableButtonLink = this.buttons['show_buyable'].parentNode;
 351                 showBuyableButtonLink.href = canonicalImgUrl + '/get_slide_buyable_items';
 352                 this.cartSlide.innerHTML = '';
 353                 this.cartSlide.style.visibility='hidden';
 354
 355
 356                 var metadataButton = this.buttons['edit_metadata']
 357                 if (metadataButton) {
 358                         var metadataEditLink = metadataButton.parentNode;
 359                         metadataEditLink.href = canonicalImgUrl + '/photo_edit_form'
 360                 }
 361
 362
 363                 var req = new XMLHttpRequest();
 364                 req.onreadystatechange = function() {
 365                         switch (req.readyState) {
 366                                 case 1 :
 367                                         showProgressImage();
 368                                         break;
 369                                 case 2 :
 370                                         try {
 371                                                 if (! isTextMime.exec(req.getResponseHeader('Content-Type'))) {
 372                                                         req.onreadystatechange = null;
 373                                                         req.abort();
 374                                                         hideProgressImage();
 375                                                         window.location.href = thisFS._fallBackUrl;
 376                                                 }
 377                                         }
 378                                         catch(e){}
 379                                         break;
 380                                 case 4 :
 381                                         hideProgressImage();
 382                                         if (req.status === '200')
 383                                                 thisFS.populateViewer(req);
 384                                         else
 385                                                 //window.location.href = target.href;
 386                                                 console.error(ajaxUrl);
 387
 388                         };
 389                 };
 390
 391                 req.open("GET", ajaxUrl, true);
 392                 req.send(null);
 393
 394                 // update old displayed slide className
 395                 var className = this.selectedSlide.className;
 396                 var classes = className.split(' ');
 397                 var newClasses = new Array();
 398                 var name;
 399
 400                 for (i in classes) {
 401                         name = classes[i];
 402                         if (name === 'displayed')
 403                                 continue;
 404                         else
 405                                 newClasses.push(name);
 406                 }
 407
 408                 this.selectedSlide.className = newClasses.join(' ')
 409
 410                 // hightlight new displayed slide
 411                 this.selectedSlide = target;
 412                 className = this.selectedSlide.className;
 413                 classes = className.split(' ');
 414                 classes.push('displayed');
 415                 this.selectedSlide.className = classes.join(' ');
 416         }
 417 };
 418
 419 FilmSlider.prototype.toolbarClickHandler = function(evt) {
 420         var target = getTargetedObject(evt);
 421         if(target.tagName === 'IMG' && target.getAttribute('name')){
 422                 switch(target.getAttribute('name')) {
 423                         case 'previous' :
 424                                 disableDefault(evt);
 425                                 disablePropagation(evt);
 426                                 var button = target;
 427                                 var link = button.parentNode;
 428                                 link.blur();
 429                                 this.loadSibling(true);
 430                                 break;
 431                         case 'next' :
 432                                 disableDefault(evt);
 433                                 disablePropagation(evt);
 434                                 var button = target;
 435                                 var link = button.parentNode;
 436                                 link.blur();
 437                                 this.loadSibling(false);
 438                                 break;
 439                         case 'full_screen':
 440                                 disableDefault(evt);
 441                                 disablePropagation(evt);
 442                                 target.parentNode.blur();
 443                                 if (this.viewMode === 'full') {
 444                                         this.mosaique.unload();
 445                                         this.mosaique = null;
 446                                         this.viewMode = 'medium';
 447                                         return;
 448                                 }
 449                                 var main = document.getElementById('photo_viewer');
 450                                 var url = target.parentNode.href;
 451                                 url = url.substring(0, url.length - '/zoom_view'.length);
 452                                 var margins = {'top':0, 'right':-1, 'bottom':0, 'left':0};
 453                                 this.mosaique = new Mosaique(main, url, margins);
 454                                 this.viewMode = 'full';
 455                                 break;
 456
 457                         case 'toggle_selection':
 458                                 disableDefault(evt);
 459                                 disablePropagation(evt);
 460                                 var button = target;
 461                                 var link = button.parentNode;
 462                                 link.blur();
 463
 464                                 var req = new XMLHttpRequest();
 465                                 var url = link.href;
 466                                 req.open("POST", url, true);
 467                                 req.setRequestHeader("Content-Type", "application/x-www-form-urlencoded;charset=utf-8");
 468                                 req.send("ajax=1");
 469
 470                                 // toggle button
 471                                 var parts = url.split('/');
 472                                 var canonicalImgUrl = parts.slice(0, parts.length-1).join('/');
 473
 474                                 if (isAddToSelection.test(url)) {
 475                                         button.src = portal_url() + '/unselect_flag_btn.gif';
 476                                         button.alt = link.title = 'Retirer de la sélection';
 477                                         link.href = canonicalImgUrl + '/remove_to_selection';
 478                                         this.selectedSlide.className = 'selected displayed';
 479                                         this.image.parentNode.className = 'selected';
 480                                         this.selectedSlideInSelection = true;
 481                                 }
 482                                 else {
 483                                         button.src = portal_url() + '/select_flag_btn.gif';
 484                                         button.alt = link.title = 'Ajouter à la sélection';
 485                                         link.href = canonicalImgUrl + '/add_to_selection';
 486                                         this.selectedSlide.className = 'displayed';
 487                                         this.image.parentNode.className = '';
 488                                         this.selectedSlideInSelection = false;
 489                                 }
 490                                 break;
 491
 492                         case 'show_buyable':
 493                                 disableDefault(evt);
 494                                 disablePropagation(evt);
 495                                 var button = target;
 496                                 var link = button.parentNode;
 497                                 link.blur();
 498                                 var slide = this.cartSlide;
 499                                 slide.innerHTML = '';
 500                                 slide.style.visibility = 'visible';
 501                                 var cw = new CartWidget(slide, link.href);
 502                                 cw.onCancel = function() {
 503                                         CartWidget.prototype.onCancel.apply(this);
 504                                         slide.style.visibility = 'hidden';
 505                                 };
 506                                 cw.onAfterConfirm = function() {
 507                                         slide.style.visibility = 'hidden';
 508                                 };
 509                                 break;
 510
 511
 512
 513
 514                         /*
 515                         case 'edit_metadata' :
 516                                 disableDefault(evt);
 517                                 disablePropagation(evt);
 518                                 target.blur();
 519                                 if (this.viewMode === 'full') {
 520                                         this.mosaique.unload();
 521                                         this.mosaique = null;
 522                                         this.viewMode = 'medium';
 523                                         return;
 524                                 }
 525                                 var fi = new FragmentImporter(absolute_url());
 526                                 fi.useMacro('metadata_edit_form_macros', 'iptc', 'image_metadata');
 527                                 break;
 528                         */
 529                 }
 530         }
 531 };
 532
 533
 534 if(browser.isDOM2Event){
 535         if (browser.isAppleWebKit) {
 536                 FilmSlider.prototype.mouseWheelHandler = function(evt) {
 537                         disableDefault(evt);
 538                         var pos = this.getSliderPosition();
 539                         pos.x -= evt.wheelDelta / 40;
 540                         this.setSliderPosition(pos);
 541                 };
 542         }
 543         else {
 544                 FilmSlider.prototype.mouseWheelHandler = function(evt) {
 545                         disableDefault(evt);
 546                         var pos = this.getSliderPosition();
 547                         pos.x += evt.detail * 3;
 548                         this.setSliderPosition(pos);
 549                 };
 550         }
 551 }
 552 else if (browser.isIE6up) {
 553         FilmSlider.prototype.mouseWheelHandler = function() {
 554                 var evt = window.event;
 555                 evt.returnValue = false;
 556                 var pos = this.getSliderPosition();
 557                 pos.x -= evt.wheelDelta / 40;
 558                 this.setSliderPosition(pos);
 559         };
 560 }
 561
 562 FilmSlider.prototype.keyDownHandler = function(evt) {
 563         var evt = getEventObject(evt);
 564         switch (evt.keyCode) {
 565                 case keyLeft :
 566                         this.loadSibling(true);
 567                         break;
 568                 case keyRight :
 569                         this.loadSibling(false);
 570                         break;
 571                 default:
 572                         return;
 573         }
 574 };
 575
 576
 577 FilmSlider.prototype.keyPressHandler = function(evt) {
 578         var target = getTargetedObject(evt);
 579         if (target.tagName === 'INPUT' || target.tagName=== 'TEXTAREA')
 580                 return;
 581         var evt = getEventObject(evt);
 582         var charPress = String.fromCharCode((evt.keyCode) ? evt.keyCode : evt.which);
 583         switch(charPress) {
 584                 case 'f':
 585                 case 'F':
 586                         raiseMouseEvent(this.buttons['full_screen'], 'click');
 587                         break;
 588         }
 589 };
 590
 591 FilmSlider.prototype.populateViewer = function(req) {
 592         var elements = req.responseXML.documentElement.childNodes;
 593         for(var i=0 ; i < elements.length ; i++ ) {
 594                 element = elements[i];
 595                 switch (element.nodeName) {
 596                         case 'fragment' :
 597                                 var dest = document.getElementById(element.getAttribute('id'));
 598                                 if (dest) { dest.innerHTML = element.firstChild.nodeValue; }
 599                                 break;
 600                         case 'imageattributes' :
 601                                 var link = this.buttons['back_to_portfolio'].parentNode;
 602                                 link.href = element.getAttribute('backToContextUrl');
 603                                 link = this.buttons['show_buyable'].parentNode;
 604                                 var buyable = element.getAttribute('buyable');
 605                                 if(buyable === 'True')
 606                                         link.className = null;
 607                                 else if(buyable === 'False')
 608                                         link.className = 'hidden';
 609                                 this.image.alt = element.getAttribute('alt');
 610                                 this.updateBreadcrumbs(element.getAttribute('lastBcUrl'),
 611                                                                            element.getAttribute('img_id'));
 612                                 break;
 613                 }
 614         }
 615 };
 616
 617 FilmSlider.prototype.refreshImage = function() {
 618         this.image.style.visibility = 'hidden';
 619         this.image.src = this.pendingImage.src;
 620         this.image.width = this.pendingImage.width;
 621         this.image.height = this.pendingImage.height;
 622         this.image.style.visibility = 'visible';
 623         if (this.selectedSlideInSelection)
 624                 this.image.parentNode.className = 'selected';
 625         else
 626                 this.image.parentNode.className = '';
 627 };
 628
 629 FilmSlider.prototype.updateBreadcrumbs = function(url, title) {
 630         if (this.hasBreadcrumbs) {
 631                 this.lastBCElement.href = element.getAttribute('lastBcUrl');
 632                 this.lastBCElement.innerHTML = element.getAttribute('img_id');
 633         }
 634 };
 635
 636 FilmSlider.prototype.startSlideShow = function() {
 637         this.slideShowSlide = this.pendingSlideShowSlide = this.selectedSlide;
 638         return this.slideShowSlide.href;
 639 };
 640
 641 FilmSlider.prototype.slideShowNext = function() {
 642         var nextSlide = this.slideShowSlide.parentNode.nextSibling;
 643         if (nextSlide && nextSlide.nodeType===3)
 644                 nextSlide = nextSlide.nextSibling;
 645
 646         if (nextSlide) {
 647                 nextSlide = nextSlide.getElementsByTagName('a')[0];
 648                 this.pendingSlideShowSlide = nextSlide;
 649                 return this.pendingSlideShowSlide.href;
 650         }
 651         else {
 652                 var row = this.slideShowSlide.parentNode.parentNode;
 653                 var first = row.firstChild;
 654                 if (first.nodeType===3)
 655                         first = first.nextSibling;
 656                 this.pendingSlideShowSlide = first.getElementsByTagName('a')[0];
 657                 return this.pendingSlideShowSlide.href;
 658         }
 659 };
 660
 661 FilmSlider.prototype.slideShowPrevious = function() {
 662         var previousSlide = this.slideShowSlide.parentNode.previousSibling;
 663         if (previousSlide && previousSlide.nodeType===3)
 664                 previousSlide = previousSlide.previousSibling;
 665
 666         if (previousSlide) {
 667                 previousSlide = previousSlide.getElementsByTagName('a')[0];
 668                 this.pendingSlideShowSlide = previousSlide;
 669                 return this.pendingSlideShowSlide.href;
 670         }
 671         else {
 672                 var row = this.slideShowSlide.parentNode.parentNode;
 673                 var last = row.lastChild;
 674                 if (last.nodeType===3)
 675                         last = last.previousSibling;
 676                 this.pendingSlideShowSlide = last.getElementsByTagName('a')[0];
 677                 return this.pendingSlideShowSlide.href;
 678         }
 679 };
 680
 681 FilmSlider.prototype.slideShowImageLoaded = function() {
 682         this.slideShowSlide = this.pendingSlideShowSlide;
 683 };
 684
 685 FilmSlider.prototype.stopSlideShow = function() {
 686         raiseMouseEvent(this.slideShowSlide, 'click');
 687         var index = parseInt(this.selectedSlide.getAttribute('portfolio:position'));
 688         this.centerSlide(index);
 689 };
 690
 691
 692 /* UTILS */
 693 function Point(x, y) {
 694         this.x = Math.round(x);
 695         this.y = Math.round(y);
 696 }
 697 Point.prototype.diff = function(point) { return new Point(this.x - point.x, this.y - point.y); };
 698 Point.prototype.add = function(point) { return new Point(this.x + point.x, this.y + point.y); };
 699 Point.prototype.mul = function(k) { return new Point(this.x * k, this.y *k)};
 700 Point.prototype.toString = function() { return "(" + String(this.x) + ", " + String(this.y) + ")"; };
 701
 702 })();