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) {
  15         var self = this;
  16         this.grid = grid;
  17         this.toolbar = toolbar;
  18         if (toolbar) {
  19                 this.toolbarFixed = false;
  20                 addListener(window, 'scroll', function(evt){self.windowScrollHandler(evt);});
  21         }
  22         this.lastCBChecked = undefined;
  23         this.form = undefined;
  24         var parent = this.grid.parentNode;
  25         while(parent) {
  26                 parent = parent.parentNode;
  27                 if (parent.tagName === 'FORM') {
  28                         this.form = parent;
  29                         break;
  30                 }
  31                 else if (parent.tagName === 'BODY') {
  32                         break;
  33                 }
  34         }
  35         addListener(this.grid, 'click', function(evt){self.mouseClickHandler(evt);});
  36         if (this.form) {
  37                 var fm = new FormManager(this.form);
  38                 fm.onBeforeSubmit = function(fm_, evt) {return self.onBeforeSubmit(fm_, evt);};
  39                 fm.onResponseLoad = function(req) {return self.onResponseLoad(req);};
  40         }
  41 };
  42
  43 Lightbox.prototype.windowScrollHandler = function(evt) {
  44         if (this.toolbar.offsetTop < window.scrollY && !this.toolbarFixed) {
  45                 console.log('this.toolbar.offsetTop', this.toolbar.offsetTop);
  46                 this.toolbarFixed = true;
  47                 this.backThreshold = this.toolbar.offsetTop;
  48                 this.switchToolBarPositioning(true);
  49         }
  50         else if (this.toolbarFixed && window.scrollY < this.backThreshold) {
  51                 this.toolbarFixed = false;
  52                 this.switchToolBarPositioning(false);
  53         }
  54 };
  55
  56 Lightbox.prototype.mouseClickHandler = function(evt) {
  57         var target = getTargetedObject(evt);
  58         if (target.tagName === 'IMG') {
  59                 var img = target;
  60                 var link =  target.parentNode;
  61                 var button =  link.parentNode;
  62                 var slide = button.parentNode;
  63                 var req, url;
  64                 if (link.tagName === 'A') {
  65                         switch(link.getAttribute('name')) {
  66                                 case 'add_to_selection':
  67                                         disableDefault(evt);
  68                                         link.blur();
  69                                         req = new XMLHttpRequest();
  70                                         url = link.href;
  71                                         req.open("POST", url, true);
  72                                         req.setRequestHeader("Content-Type", "application/x-www-form-urlencoded;charset=utf-8");
  73                                         req.send("ajax=1");
  74
  75                                         slide.className = 'selected';
  76
  77                                         link.setAttribute('name', 'remove_to_selection');
  78                                         link.href = url.replace(/(.*\/)add_to_selection$/, '$1remove_to_selection');
  79                                         link.title = img.alt = 'Retirer de la sélection';
  80                                         button.className = "button slide-deselect";
  81                                         break;
  82
  83                                 case 'remove_to_selection':
  84                                         disableDefault(evt);
  85                                         link.blur();
  86                                         req = new XMLHttpRequest();
  87                                         url = link.href;
  88                                         req.open("POST", url, true);
  89                                         req.setRequestHeader("Content-Type", "application/x-www-form-urlencoded;charset=utf-8");
  90                                         req.send("ajax=1");
  91                                         slide.className = null;
  92                                         link.setAttribute('name', 'add_to_selection');
  93                                         link.href = url.replace(/(.*\/)remove_to_selection$/, '$1add_to_selection');
  94                                         link.title = img.alt = 'Ajouter à la sélection';
  95                                         button.className = "button slide-select";
  96                                         break;
  97
  98                                 case 'add_to_cart' :
  99                                         disableDefault(evt);
 100                                         slide.widget = new CartWidget(slide, link.href);
 101                                         break;
 102
 103                                 case 'hide_for_anonymous':
 104                                         disableDefault(evt);
 105                                         link.blur();
 106                                         req = new XMLHttpRequest();
 107                                         url = link.href;
 108                                         req.open("POST", url, true);
 109                                         req.setRequestHeader("Content-Type", "application/x-www-form-urlencoded;charset=utf-8");
 110                                         req.send(null);
 111                                         slide.className = 'hidden-slide';
 112                                         link.setAttribute('name', 'show_for_anonymous');
 113                                         link.href = url.replace(/(.*\/)hideForAnonymous$/, '$1resetHide');
 114                                         link.title = img.alt = 'Montrer au anonymes';
 115                                         button.className = "button slide-show";
 116                                         break;
 117
 118                                 case 'show_for_anonymous':
 119                                         disableDefault(evt);
 120                                         link.blur();
 121                                         req = new XMLHttpRequest();
 122                                         url = link.href;
 123                                         req.open("POST", url, true);
 124                                         req.setRequestHeader("Content-Type", "application/x-www-form-urlencoded;charset=utf-8");
 125                                         req.send(null);
 126                                         slide.className = null;
 127                                         link.setAttribute('name', 'hide_for_anonymous');
 128                                         link.href = url.replace(/(.*\/)resetHide$/, '$1hideForAnonymous');
 129                                         link.title = img.alt = 'Masquer pour les anonymes';
 130                                         button.className = "button slide-hide";
 131                                         break;
 132                         }
 133                 }
 134         } else if(target.tagName === 'INPUT' && target.type === 'checkbox') {
 135                 var cb = target;
 136                 if (cb.checked) {
 137                         cb.setAttribute('checked', 'checked');
 138                 }
 139                 else {
 140                         cb.removeAttribute('checked');
 141                 }
 142                 this.selectCBRange(evt);
 143         }
 144 };
 145
 146 Lightbox.prototype.onBeforeSubmit = function(fm, evt) {
 147         switch(fm.submitButton.name) {
 148                 case 'delete' :
 149                         this.hideSelection();
 150                         break;
 151         }
 152 };
 153
 154 Lightbox.prototype.onResponseLoad = function(req) {
 155         switch(req.responseXML.documentElement.nodeName) {
 156                 case 'deleted' :
 157                         this.deleteSelection();
 158                         break;
 159                 case 'error' :
 160                         this.showSelection();
 161                         break;
 162         }
 163 };
 164
 165 Lightbox.prototype.switchToolBarPositioning = function(fixed) {
 166         var tbs = this.toolbar.style;
 167         if (fixed) {
 168                 this.toolbar.defaultCssText = this.toolbar.style.cssText;
 169                 tbs.width = String(this.toolbar.offsetWidth) + 'px';
 170                 tbs.height = String(this.toolbar.offsetHeight) + 'px';
 171                 tbs.position = 'fixed';
 172                 tbs.top = '0';
 173                 this.toolbarPlaceholder = document.createElement('div');
 174                 var phs = this.toolbarPlaceholder.style;
 175                 phs.cssText = tbs.cssText;
 176                 phs.position = 'relative';
 177                 this.toolbar.parentNode.insertBefore(this.toolbarPlaceholder, this.toolbar);
 178         }
 179         else {
 180                 this.toolbarPlaceholder.parentNode.removeChild(this.toolbarPlaceholder);
 181                 tbs.cssText = this.toolbar.defaultCssText;
 182         }
 183 };
 184
 185
 186 Lightbox.prototype.hideSelection = function() {
 187         var i, e, slide;
 188         for (i=0 ; i<this.form.elements.length ; i++) {
 189                 e = this.form.elements[i];
 190                 if (e.type === 'checkbox' && e.checked) {
 191                         slide = e.parentNode.parentNode;
 192                         slide.classList.add('zero_opacity');
 193                 }
 194         }
 195 };
 196
 197 Lightbox.prototype.showSelection = function() {
 198         var i, e, slide;
 199         for (i=0 ; i<this.form.elements.length ; i++) {
 200                 e = this.form.elements[i];
 201                 if (e.type === 'checkbox' && e.checked) {
 202                         slide = e.parentNode.parentNode;
 203                         slide.classList.remove('zero_opacity');
 204                 }
 205         }
 206 };
 207
 208 Lightbox.prototype.deleteSelection = function() {
 209         var i, e, slide;
 210         for (i=0 ; i<this.form.elements.length ; i++) {
 211                 e = this.form.elements[i];
 212                 if (e.type === 'checkbox' && e.checked) {
 213                         slide = e.parentNode.parentNode;
 214                         slide.classList.add('zero_width');
 215                 }
 216         }
 217         var self = this;
 218         // if you change this, delay you should also change this css rule :
 219         // .lightbox span { transition: width 1s
 220         setTimeout(function(){self._removeSelection();}, 1000);
 221 };
 222
 223 Lightbox.prototype._removeSelection = function() {
 224         var i, e, slide;
 225         var toRemove = [];
 226         for (i=0 ; i<this.form.elements.length ; i++) {
 227                 e = this.form.elements[i];
 228                 if (e.type === 'checkbox' && e.checked) {
 229                         toRemove.push(e.parentNode.parentNode);
 230                 }
 231         }
 232         for (i=0 ; i<toRemove.length ; i++) {
 233                 slide = toRemove[i];
 234                 slide.parentNode.removeChild(slide);
 235         }
 236         this.cbIndex = undefined;
 237 };
 238
 239 Lightbox.prototype.getCBIndex = function(cb) {
 240         if (!this.cbIndex) {
 241                 // build checkbox index
 242                 this.cbIndex = [];
 243                 var i, node, c;
 244                 var nodes = this.grid.childNodes;
 245                 for (i=0 ; i<nodes.length ; i++) {
 246                         node = nodes[i];
 247                         if (node.nodeName === 'SPAN') {
 248                                 c = node.getElementsByTagName('input')[0];
 249                                 c.index = this.cbIndex.length;
 250                                 this.cbIndex[this.cbIndex.length] = c;
 251                         }
 252                 }
 253         }
 254         return cb.index;
 255 };
 256
 257 Lightbox.prototype.selectCBRange = function(evt) {
 258         var target = getTargetedObject(evt);
 259         evt = getEventObject(evt);
 260         var shift = evt.shiftKey;
 261         if (shift && this.lastCBChecked) {
 262                 var from = this.getCBIndex(this.lastCBChecked);
 263                 var to = this.getCBIndex(target);
 264                 var start = Math.min(from, to);
 265                 var stop = Math.max(from, to);
 266                 var i;
 267                 for (i=start ; i<stop ; i++ ) {
 268                         this.cbIndex[i].setAttribute('checked', 'checked');
 269                 }
 270         }
 271         else if (target.checked) {
 272                 this.lastCBChecked = target;
 273         }
 274         else {
 275                 this.lastCBChecked = undefined;
 276         }
 277 };
 278
 279
 280 var _outlineSelectedSlide;
 281 if (browser.isGecko) {
 282         _outlineSelectedSlide = function(slide) {
 283                 slide.className = 'selected';
 284         };
 285 }
 286 else {
 287         _outlineSelectedSlide = function(slide) {
 288                 if (slide.className &&
 289                         !reSelected.test(slide.className)) {
 290                                 slide.className = slide.className + ' selected';
 291                 }
 292         };
 293 }
 294
 295 }());