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