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 = this.fm = new FormManager(this.form);
  38         addListener(this.form, 'change', function(evt){self.onChangeHandler(evt);});
  39                 fm.onBeforeSubmit = function(fm_, evt) {return self.onBeforeSubmit(fm_, evt);};
  40                 fm.onResponseLoad = function(req) {return self.onResponseLoad(req);};
  41         }
  42 };
  43
  44 Lightbox.prototype.windowScrollHandler = function(evt) {
  45         if (this.toolbar.offsetTop < window.scrollY && !this.toolbarFixed) {
  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.onChangeHandler = function(evt) {
 147     var target = getTargetedObject(evt);
 148     if (target.name === 'sort_on') {
 149         this.fm.submitButton = {'name' : 'set_sorting', 'value' : 'ok'};
 150         this.fm.submit(evt);
 151     }
 152 };
 153
 154 Lightbox.prototype.onBeforeSubmit = function(fm, evt) {
 155         switch(fm.submitButton.name) {
 156                 case 'delete' :
 157                         this.hideSelection();
 158                         break;
 159         }
 160 };
 161
 162 Lightbox.prototype.onResponseLoad = function(req) {
 163         switch(req.responseXML.documentElement.nodeName) {
 164                 case 'deleted' :
 165                         this.deleteSelection();
 166                         break;
 167                 case 'error' :
 168                         this.showSelection();
 169                         break;
 170         case 'sorted' :
 171             this.fm.submitButton = undefined;
 172         }
 173 };
 174
 175 Lightbox.prototype.switchToolBarPositioning = function(fixed) {
 176         var tbs = this.toolbar.style;
 177         if (fixed) {
 178                 this.toolbar.defaultCssText = this.toolbar.style.cssText;
 179                 tbs.width = String(this.toolbar.offsetWidth) + 'px';
 180                 tbs.height = String(this.toolbar.offsetHeight) + 'px';
 181                 tbs.position = 'fixed';
 182                 tbs.top = '0';
 183                 this.toolbarPlaceholder = document.createElement('div');
 184                 var phs = this.toolbarPlaceholder.style;
 185                 phs.cssText = tbs.cssText;
 186                 phs.position = 'relative';
 187                 this.toolbar.parentNode.insertBefore(this.toolbarPlaceholder, this.toolbar);
 188         }
 189         else {
 190                 this.toolbarPlaceholder.parentNode.removeChild(this.toolbarPlaceholder);
 191                 tbs.cssText = this.toolbar.defaultCssText;
 192         }
 193 };
 194
 195
 196 Lightbox.prototype.hideSelection = function() {
 197         var i, e, slide;
 198         for (i=0 ; i<this.form.elements.length ; i++) {
 199                 e = this.form.elements[i];
 200                 if (e.type === 'checkbox' && e.checked) {
 201                         slide = e.parentNode.parentNode;
 202                         slide.classList.add('zero_opacity');
 203                 }
 204         }
 205 };
 206
 207 Lightbox.prototype.showSelection = function() {
 208         var i, e, slide;
 209         for (i=0 ; i<this.form.elements.length ; i++) {
 210                 e = this.form.elements[i];
 211                 if (e.type === 'checkbox' && e.checked) {
 212                         slide = e.parentNode.parentNode;
 213                         slide.classList.remove('zero_opacity');
 214                 }
 215         }
 216 };
 217
 218 Lightbox.prototype.deleteSelection = function() {
 219         var i, e, slide;
 220         for (i=0 ; i<this.form.elements.length ; i++) {
 221                 e = this.form.elements[i];
 222                 if (e.type === 'checkbox' && e.checked) {
 223                         slide = e.parentNode.parentNode;
 224                         slide.classList.add('zero_width');
 225                 }
 226         }
 227         var self = this;
 228         // if you change this, delay you should also change this css rule :
 229         // .lightbox span { transition: width 1s
 230         setTimeout(function(){self._removeSelection();}, 1000);
 231 };
 232
 233 Lightbox.prototype._removeSelection = function() {
 234         var i, e, slide;
 235         var toRemove = [];
 236         for (i=0 ; i<this.form.elements.length ; i++) {
 237                 e = this.form.elements[i];
 238                 if (e.type === 'checkbox' && e.checked) {
 239                         toRemove.push(e.parentNode.parentNode);
 240                 }
 241         }
 242         for (i=0 ; i<toRemove.length ; i++) {
 243                 slide = toRemove[i];
 244                 slide.parentNode.removeChild(slide);
 245         }
 246         this.cbIndex = undefined;
 247 };
 248
 249 Lightbox.prototype.getCBIndex = function(cb) {
 250         if (!this.cbIndex) {
 251                 // build checkbox index
 252                 this.cbIndex = [];
 253                 var i, node, c;
 254                 var nodes = this.grid.childNodes;
 255                 for (i=0 ; i<nodes.length ; i++) {
 256                         node = nodes[i];
 257                         if (node.nodeName === 'SPAN') {
 258                                 c = node.getElementsByTagName('input')[0];
 259                                 c.index = this.cbIndex.length;
 260                                 this.cbIndex[this.cbIndex.length] = c;
 261                         }
 262                 }
 263         }
 264         return cb.index;
 265 };
 266
 267 Lightbox.prototype.selectCBRange = function(evt) {
 268         var target = getTargetedObject(evt);
 269         evt = getEventObject(evt);
 270         var shift = evt.shiftKey;
 271         if (shift && this.lastCBChecked) {
 272                 var from = this.getCBIndex(this.lastCBChecked);
 273                 var to = this.getCBIndex(target);
 274                 var start = Math.min(from, to);
 275                 var stop = Math.max(from, to);
 276                 var i;
 277                 for (i=start ; i<stop ; i++ ) {
 278                         this.cbIndex[i].setAttribute('checked', 'checked');
 279                 }
 280         }
 281         else if (target.checked) {
 282                 this.lastCBChecked = target;
 283         }
 284         else {
 285                 this.lastCBChecked = undefined;
 286         }
 287 };
 288
 289
 290 var _outlineSelectedSlide;
 291 if (browser.isGecko) {
 292         _outlineSelectedSlide = function(slide) {
 293                 slide.className = 'selected';
 294         };
 295 }
 296 else {
 297         _outlineSelectedSlide = function(slide) {
 298                 if (slide.className &&
 299                         !reSelected.test(slide.className)) {
 300                                 slide.className = slide.className + ' selected';
 301                 }
 302         };
 303 }
 304
 305 }());