skins/photo_lightbox_viewer.js

   1 /*
   2 * 2008-2014 Benoit Pin - MINES ParisTech
   3 * http://plinn.org
   4 * Licence Creative Commons http://creativecommons.org/licenses/by-nc/2.0/
   5 */
   6
   7
   8 var Lightbox;
   9
  10 (function(){
  11
  12 var reSelected = /.*selected.*/;
  13
  14 Lightbox = function(grid, toolbar, complete, container_type) {
  15         var self = this;
  16         this.grid = grid;
  17         this._buildSlidesIndex(); // set this.slides and this.lastSlide;
  18         this.fetchingDisabled = false;
  19         this.complete = complete;
  20         this.container_type = container_type;
  21         this.toolbar = toolbar;
  22         if (toolbar) {
  23                 this.toolbarFixed = false;
  24                 addListener(window, 'scroll', function(evt){self.windowScrollToolbarlHandler(evt);});
  25         }
  26         addListener(window, 'scroll', function(evt){self.windowScrollGridHandler(evt);});
  27         registerStartupFunction(function(){ self.windowScrollGridHandler();});
  28         this.lastCBChecked = undefined;
  29         this.form = undefined;
  30         var parent = this.grid.parentNode;
  31         while(parent) {
  32                 parent = parent.parentNode;
  33                 if (parent.tagName === 'FORM') {
  34                         this.form = parent;
  35                         break;
  36                 }
  37                 else if (parent.tagName === 'BODY') {
  38                         break;
  39                 }
  40         }
  41         addListener(this.grid, 'click', function(evt){self.mouseClickHandler(evt);});
  42         if (this.form) {
  43                 var fm = this.fm = new FormManager(this.form);
  44                 addListener(this.form, 'change', function(evt){self.onChangeHandler(evt);});
  45                 fm.onBeforeSubmit = function(fm_, evt) {return self.onBeforeSubmit(fm_, evt);};
  46                 fm.onResponseLoad = function(req) {return self.onResponseLoad(req);};
  47         }
  48
  49         // drag and drop
  50         this.disableDefaultDragging();
  51         addListener(this.grid, 'dragstart', function(evt){self.onDragStart(evt);});
  52         addListener(this.grid, 'dragover', function(evt){self.onDragOver(evt);});
  53         addListener(this.grid, 'dragend', function(evt){self.onDragEnd(evt);});
  54 };
  55
  56 Lightbox.prototype._buildSlidesIndex = function() {
  57         this.slides = [];
  58         var node, i;
  59         for (i=0 ; i<this.grid.childNodes.length ; i++) {
  60                 node = this.grid.childNodes[i];
  61                 if (node.nodeType === 1) { // is element
  62                         this.slides.push(node);
  63                 }
  64         }
  65         this.lastSlide = this.slides[this.slides.length-1];
  66 };
  67
  68 Lightbox.prototype.windowScrollToolbarlHandler = function(evt) {
  69         if (this.toolbar.offsetTop < getWindowScrollY() && !this.toolbarFixed) {
  70                 this.toolbarFixed = true;
  71                 this.backThreshold = this.toolbar.offsetTop;
  72                 this.switchToolBarPositioning(true);
  73         }
  74         else if (this.toolbarFixed && getWindowScrollY() < this.backThreshold) {
  75                 this.toolbarFixed = false;
  76                 this.switchToolBarPositioning(false);
  77         }
  78 };
  79 Lightbox.prototype.windowScrollGridHandler = function(evt) {
  80         if (!this.complete &&
  81                 !this.fetchingDisabled &&
  82                 getWindowScrollY() >
  83                         (this.lastSlide.firstElementChild || this.lastSlide.children[0]).offsetTop
  84                          - getWindowHeight()) {
  85                 this.fetchingDisabled = true;
  86                 this.fetchTail();
  87         }
  88 };
  89
  90 Lightbox.prototype.mouseClickHandler = function(evt) {
  91         var target = getTargetedObject(evt);
  92         if (target.tagName === 'IMG') {
  93                 var img = target;
  94                 var link =      target.parentNode;
  95                 var button =  link.parentNode;
  96                 var slide = button.parentNode;
  97                 var req, url;
  98                 if (link.tagName === 'A') {
  99                         switch(link.getAttribute('name')) {
 100                                 case 'add_to_selection':
 101                                         disableDefault(evt);
 102                                         link.blur();
 103                                         req = new XMLHttpRequest();
 104                                         url = link.href;
 105                                         req.open("POST", url, true);
 106                                         req.setRequestHeader("Content-Type", "application/x-www-form-urlencoded;charset=utf-8");
 107                                         req.send("ajax=1");
 108
 109                                         slide.className = 'selected';
 110
 111                                         link.setAttribute('name', 'remove_to_selection');
 112                                         link.href = url.replace(/(.*\/)add_to_selection$/, '$1remove_to_selection');
 113                                         link.title = img.alt = 'Retirer de la sélection';
 114                                         button.className = "button slide-deselect";
 115                                         break;
 116
 117                                 case 'remove_to_selection':
 118                                         disableDefault(evt);
 119                                         link.blur();
 120                                         req = new XMLHttpRequest();
 121                                         url = link.href;
 122                                         req.open("POST", url, true);
 123                                         req.setRequestHeader("Content-Type", "application/x-www-form-urlencoded;charset=utf-8");
 124                                         req.send("ajax=1");
 125                                         slide.className = null;
 126                                         link.setAttribute('name', 'add_to_selection');
 127                                         link.href = url.replace(/(.*\/)remove_to_selection$/, '$1add_to_selection');
 128                                         link.title = img.alt = 'Ajouter à la sélection';
 129                                         button.className = "button slide-select";
 130                                         break;
 131
 132                                 case 'add_to_cart' :
 133                                         disableDefault(evt);
 134                                         slide.widget = new CartWidget(slide, link.href);
 135                                         break;
 136
 137                                 case 'hide_for_anonymous':
 138                                         disableDefault(evt);
 139                                         link.blur();
 140                                         req = new XMLHttpRequest();
 141                                         url = link.href;
 142                                         req.open("POST", url, true);
 143                                         req.setRequestHeader("Content-Type", "application/x-www-form-urlencoded;charset=utf-8");
 144                                         req.send(null);
 145                                         slide.className = 'hidden-slide';
 146                                         link.setAttribute('name', 'show_for_anonymous');
 147                                         link.href = url.replace(/(.*\/)hideForAnonymous$/, '$1resetHide');
 148                                         link.title = img.alt = 'Montrer au anonymes';
 149                                         button.className = "button slide-show";
 150                                         break;
 151
 152                                 case 'show_for_anonymous':
 153                                         disableDefault(evt);
 154                                         link.blur();
 155                                         req = new XMLHttpRequest();
 156                                         url = link.href;
 157                                         req.open("POST", url, true);
 158                                         req.setRequestHeader("Content-Type", "application/x-www-form-urlencoded;charset=utf-8");
 159                                         req.send(null);
 160                                         slide.className = null;
 161                                         link.setAttribute('name', 'hide_for_anonymous');
 162                                         link.href = url.replace(/(.*\/)resetHide$/, '$1hideForAnonymous');
 163                                         link.title = img.alt = 'Masquer pour les anonymes';
 164                                         button.className = "button slide-hide";
 165                                         break;
 166                         }
 167                 }
 168         } else if(target.tagName === 'INPUT' && target.type === 'checkbox') {
 169                 var cb = target;
 170                 if (cb.checked) {
 171                         cb.setAttribute('checked', 'checked');
 172                 }
 173                 else {
 174                         cb.removeAttribute('checked');
 175                 }
 176                 this.selectCBRange(evt);
 177         }
 178 };
 179
 180 Lightbox.prototype.onChangeHandler = function(evt) {
 181         var target = getTargetedObject(evt);
 182         if (target.name === 'sort_on') {
 183                 this.fm.submitButton = {'name' : 'set_sorting', 'value' : 'ok'};
 184                 this.fm.submit(evt);
 185         }
 186 };
 187
 188 Lightbox.prototype.onBeforeSubmit = function(fm, evt) {
 189         switch(fm.submitButton.name) {
 190                 case 'delete' :
 191                         this.hideSelection();
 192                         break;
 193         }
 194 };
 195
 196 Lightbox.prototype.onResponseLoad = function(req) {
 197         switch(req.responseXML.documentElement.nodeName) {
 198                 case 'deleted' :
 199                         this.deleteSelection();
 200                         break;
 201                 case 'error' :
 202                         this.showSelection();
 203                         break;
 204                 case 'sorted' :
 205                         this.fm.submitButton = undefined;
 206                         this.refreshGrid();
 207                         break;
 208                 default :
 209                         this.fm.loadResponse(req);
 210                         break;
 211         }
 212 };
 213
 214 Lightbox.prototype.switchToolBarPositioning = function(fixed) {
 215         var tbs = this.toolbar.style;
 216         if (fixed) {
 217                 this.toolbar.defaultCssText = this.toolbar.style.cssText;
 218                 tbs.width = String(this.toolbar.offsetWidth) + 'px';
 219                 tbs.height = String(this.toolbar.offsetHeight) + 'px';
 220                 tbs.position = 'fixed';
 221                 tbs.top = '0';
 222                 this.toolbarPlaceholder = document.createElement('div');
 223                 var phs = this.toolbarPlaceholder.style;
 224                 phs.cssText = tbs.cssText;
 225                 phs.position = 'relative';
 226                 this.toolbar.parentNode.insertBefore(this.toolbarPlaceholder, this.toolbar);
 227         }
 228         else {
 229                 this.toolbarPlaceholder.parentNode.removeChild(this.toolbarPlaceholder);
 230                 tbs.cssText = this.toolbar.defaultCssText;
 231         }
 232 };
 233
 234
 235 Lightbox.prototype.hideSelection = function() {
 236         var i, e, slide;
 237         for (i=0 ; i<this.form.elements.length ; i++) {
 238                 e = this.form.elements[i];
 239                 if (e.type === 'checkbox' && e.checked) {
 240                         slide = e.parentNode.parentNode;
 241                         slide.classList.add('zero_opacity');
 242                 }
 243         }
 244 };
 245
 246 Lightbox.prototype.showSelection = function() {
 247         var i, e, slide;
 248         for (i=0 ; i<this.form.elements.length ; i++) {
 249                 e = this.form.elements[i];
 250                 if (e.type === 'checkbox' && e.checked) {
 251                         slide = e.parentNode.parentNode;
 252                         slide.classList.remove('zero_opacity');
 253                 }
 254         }
 255 };
 256
 257 Lightbox.prototype.deleteSelection = function() {
 258         var i, e, slide;
 259         for (i=0 ; i<this.form.elements.length ; i++) {
 260                 e = this.form.elements[i];
 261                 if (e.type === 'checkbox' && e.checked) {
 262                         slide = e.parentNode.parentNode;
 263                         slide.classList.add('zero_width');
 264                 }
 265         }
 266         var self = this;
 267         // if you change this, delay you should also change this css rule :
 268         // .lightbox span { transition: width 1s
 269         setTimeout(function(){self._removeSelection();}, 1000);
 270 };
 271
 272 Lightbox.prototype._removeSelection = function() {
 273         var i, e;
 274         var toRemove = [];
 275         for (i=0 ; i<this.form.elements.length ; i++) {
 276                 e = this.form.elements[i];
 277                 if (e.type === 'checkbox' && e.checked) {
 278                         toRemove.push(e.parentNode.parentNode);
 279                 }
 280         }
 281         for (i=0 ; i<toRemove.length ; i++) {
 282                 this.grid.removeChild(toRemove[i]);
 283         }
 284         this._buildSlidesIndex();
 285         this.cbIndex = undefined;
 286         this.windowScrollGridHandler();
 287 };
 288
 289 Lightbox.prototype.getCBIndex = function(cb) {
 290         if (!this.cbIndex) {
 291                 // build checkbox index
 292                 this.cbIndex = [];
 293                 var i, node, c;
 294                 for (i=0 ; i<this.slides.length ; i++) {
 295                         node = this.slides[i];
 296                         c = node.getElementsByTagName('input')[0];
 297                         c.index = this.cbIndex.length;
 298                         this.cbIndex.push(c);
 299                 }
 300         }
 301         return cb.index;
 302 };
 303
 304 Lightbox.prototype.selectCBRange = function(evt) {
 305         var target = getTargetedObject(evt);
 306         evt = getEventObject(evt);
 307         var shift = evt.shiftKey;
 308         if (shift && this.lastCBChecked) {
 309                 var from = this.getCBIndex(this.lastCBChecked);
 310                 var to = this.getCBIndex(target);
 311                 var start = Math.min(from, to);
 312                 var stop = Math.max(from, to);
 313                 var i;
 314                 for (i=start ; i<stop ; i++ ) {
 315                         this.cbIndex[i].setAttribute('checked', 'checked');
 316                 }
 317         }
 318         else if (target.checked) {
 319                 this.lastCBChecked = target;
 320         }
 321         else {
 322                 this.lastCBChecked = undefined;
 323         }
 324 };
 325
 326 Lightbox.prototype.refreshGrid = function() {
 327         var req = new XMLHttpRequest();
 328         self = this;
 329         req.onreadystatechange = function() {
 330                 switch (req.readyState) {
 331                         case 1 :
 332                                 showProgressImage();
 333                                 break;
 334                         case 4 :
 335                                 hideProgressImage();
 336                                 if (req.status === 200) {
 337                                         self._refreshGrid(req);
 338                                 }
 339                                 break;
 340                 }
 341         };
 342
 343         var url = absolute_url() +
 344                           '/portfolio_thumbnails_tail?start:int=0&size:int=' +
 345                           this.slides.length;
 346         req.open('GET', url, true);
 347         req.send();
 348 };
 349
 350 Lightbox.prototype._refreshGrid = function(req) {
 351         var doc = req.responseXML.documentElement;
 352         var i, node;
 353         var j = 0;
 354         for (i=0 ; i<doc.childNodes.length ; i++) {
 355                 node = doc.childNodes[i];
 356                 if (node.nodeType === 1) {
 357                         node = getCopyOfNode(node);
 358                         this.disableDefaultDragging(node);
 359                         this.grid.replaceChild(node, this.slides[j]);
 360                         this.slides[j] = node;
 361                         j++;
 362                 }
 363         }
 364         this.cbIndex = undefined;
 365 };
 366
 367 Lightbox.prototype.fetchTail = function() {
 368         var req = new XMLHttpRequest();
 369         var self = this;
 370         req.onreadystatechange = function() {
 371                 switch (req.readyState) {
 372                         case 1 :
 373                                 showProgressImage();
 374                                 break;
 375                         case 4 :
 376                                 hideProgressImage();
 377                                 if (req.status === 200) {
 378                                         self._appendTail(req);
 379                                 }
 380                                 break;
 381                 }
 382         };
 383
 384         var url = absolute_url() +
 385                           '/portfolio_thumbnails_tail?start:int=' +
 386                           String(this.slides.length) +
 387                           '&size:int=10' +
 388                           '&container_type=' +
 389                           this.container_type;
 390         req.open('GET', url, true);
 391         req.send();
 392 };
 393
 394 Lightbox.prototype._appendTail = function(req) {
 395         var doc = req.responseXML.documentElement;
 396         var i, node, c;
 397         for (i=0 ; i<doc.childNodes.length ; i++) {
 398                 node = doc.childNodes[i];
 399                 if (node.nodeType === 1) {
 400                         this.lastSlide = this.grid.appendChild(getCopyOfNode(node));
 401                         this.disableDefaultDragging(this.lastSlide);
 402                         this.slides.push(this.lastSlide);
 403                         if (this.cbIndex) {
 404                                 c = this.lastSlide.getElementsByTagName('input')[0];
 405                                 c.index = this.cbIndex.length;
 406                                 this.cbIndex.push(c);
 407
 408                         }
 409                 }
 410         }
 411         this.fetchingDisabled = false;
 412         if (doc.getAttribute('nomore')) {
 413                 this.complete = true;
 414         }
 415         this.windowScrollGridHandler();
 416 };
 417
 418
 419 var _outlineSelectedSlide;
 420 if (browser.isGecko) {
 421         _outlineSelectedSlide = function(slide) {
 422                 slide.className = 'selected';
 423         };
 424 }
 425 else {
 426         _outlineSelectedSlide = function(slide) {
 427                 if (slide.className &&
 428                         !reSelected.test(slide.className)) {
 429                                 slide.className = slide.className + ' selected';
 430                 }
 431         };
 432 }
 433
 434 if (browser.isGecko) {
 435         Lightbox.prototype.disableDefaultDragging = function(element) {
 436                 if (!element) {
 437                         element = this.grid;
 438                 }
 439                 var i, j, name, elements;
 440                 var elementsNames = ['a', 'img'];
 441                 for (i=0 ; i < elementsNames.length ; i++) {
 442                         name = elementsNames[i];
 443                         elements = element.getElementsByTagName(name);
 444                         for (j=0 ; j < elements.length ; j++) {
 445                                 elements[j].draggable=false;
 446                         }
 447                 }
 448         };
 449 }
 450 else {
 451         Lightbox.prototype.disableDefaultDragging = function() {};
 452 }
 453
 454 Lightbox.prototype.getSelectedSlides = function() {
 455         var i, e, slide;
 456         var slides = [];
 457         for (i=0 ; i<this.form.elements.length ; i++) {
 458                 e = this.form.elements[i];
 459                 if (e.type === 'checkbox' && e.checked) {
 460                         slide = e.parentNode.parentNode;
 461                         slides.push(slide);
 462                 }
 463         }
 464         return slides;
 465 };
 466
 467 Lightbox.prototype.onDragStart = function(evt) {
 468         var target = getTargetedObject(evt);
 469         this.dragged = target;
 470         this.draggedSelection = this.getSelectedSlides();
 471         this.draggedSelection.push(target);
 472         evt.dataTransfer.setData('text', '');
 473
 474         var i, slide;
 475         for(i=0 ; i<this.draggedSelection.length ; i++) {
 476                 slide = this.draggedSelection[i];
 477                 slide.style.opacity = 0;
 478                 slide.style.width = 0;
 479         }
 480 };
 481
 482 Lightbox.prototype.onDragOver = function(evt) {
 483         var target = getTargetedObject(evt);
 484         while(target.className !== 'slide') {
 485                 target = target.parentNode;
 486         }
 487         target = target.parentNode;
 488         if (target !== this.dragged) {
 489                 target.classList.add('dragover');
 490         }
 491         if (this.previousDragOver && this.previousDragOver !== target) {
 492                 this.previousDragOver.classList.remove('dragover');
 493         }
 494         this.previousDragOver = target;
 495 };
 496
 497 Lightbox.prototype.onDragEnd = function(evt) {
 498         if (this.previousDragOver) {
 499                 this.previousDragOver.classList.remove('dragover');
 500         }
 501         var i, slide;
 502         for(i=0 ; i<this.draggedSelection.length ; i++) {
 503                 slide = this.draggedSelection[i];
 504                 slide.style.opacity = 1;
 505                 slide.style.width = '';
 506         }
 507         this.draggedSelection = this.previousDragOver = this.dragged = undefined;
 508 };
 509
 510 }());