Ok pour Chrome et Safari.

[Portfolio.git] / skins / photo_lightbox_viewer.js

diff --git a/skins/photo_lightbox_viewer.js b/skins/photo_lightbox_viewer.js
index 5244a68..cf39a0a 100644 (file)
--- a/skins/photo_lightbox_viewer.js
+++ b/skins/photo_lightbox_viewer.js
@@ -11,14 +11,28 @@ var Lightbox;
 
 var reSelected = /.*selected.*/;
 
-Lightbox = function(grid, toolbar) {
+Lightbox = function(grid, toolbar, complete) {
        var self = this;
        this.grid = grid;
+       this.slides = [];
+       var node, i;
+       for (i=0 ; i<this.grid.childNodes.length ; i++) {
+               node = this.grid.childNodes[i];
+               if (node.nodeType === 1) { // is element
+                       this.slides.push(node);
+               }
+       }
+       this.lastSlide = this.slides[this.slides.length-1];
+       this.fetchingDisabled = false;
+       this.complete = complete;
+       console.log('complete:', complete)
        this.toolbar = toolbar;
        if (toolbar) {
                this.toolbarFixed = false;
-               addListener(window, 'scroll', function(evt){self.windowScrollHandler(evt);});
+               addListener(window, 'scroll', function(evt){self.windowScrollToolbarlHandler(evt);});
        }
+       addListener(window, 'scroll', function(evt){self.windowScrollGridHandler(evt);});
+       addListener(window, 'load', function(evt){ self.windowScrollGridHandler();});
        this.lastCBChecked = undefined;
        this.form = undefined;
        var parent = this.grid.parentNode;
@@ -35,13 +49,13 @@ Lightbox = function(grid, toolbar) {
        addListener(this.grid, 'click', function(evt){self.mouseClickHandler(evt);});
        if (this.form) {
                var fm = this.fm = new FormManager(this.form);
-        addListener(this.form, 'change', function(evt){self.onChangeHandler(evt);});
+               addListener(this.form, 'change', function(evt){self.onChangeHandler(evt);});
                fm.onBeforeSubmit = function(fm_, evt) {return self.onBeforeSubmit(fm_, evt);};
                fm.onResponseLoad = function(req) {return self.onResponseLoad(req);};
        }
 };
 
-Lightbox.prototype.windowScrollHandler = function(evt) {
+Lightbox.prototype.windowScrollToolbarlHandler = function(evt) {
        if (this.toolbar.offsetTop < window.scrollY && !this.toolbarFixed) {
                this.toolbarFixed = true;
                this.backThreshold = this.toolbar.offsetTop;
@@ -52,12 +66,20 @@ Lightbox.prototype.windowScrollHandler = function(evt) {
                this.switchToolBarPositioning(false);
        }
 };
+Lightbox.prototype.windowScrollGridHandler = function(evt) {
+       if (!this.complete &&
+               !this.fetchingDisabled &&
+               window.scrollY > this.lastSlide.firstElementChild.offsetTop - getWindowHeight()) {
+               this.fetchingDisabled = true;
+               this.fetchTail();
+       }
+};
 
 Lightbox.prototype.mouseClickHandler = function(evt) {
        var target = getTargetedObject(evt);
        if (target.tagName === 'IMG') {
                var img = target;
-               var link =  target.parentNode;
+               var link =      target.parentNode;
                var button =  link.parentNode;
                var slide = button.parentNode;
                var req, url;
@@ -144,11 +166,11 @@ Lightbox.prototype.mouseClickHandler = function(evt) {
 };
 
 Lightbox.prototype.onChangeHandler = function(evt) {
-    var target = getTargetedObject(evt);
-    if (target.name === 'sort_on') {
-        this.fm.submitButton = {'name' : 'set_sorting', 'value' : 'ok'};
-        this.fm.submit(evt);
-    }
+       var target = getTargetedObject(evt);
+       if (target.name === 'sort_on') {
+               this.fm.submitButton = {'name' : 'set_sorting', 'value' : 'ok'};
+               this.fm.submit(evt);
+       }
 };
 
 Lightbox.prototype.onBeforeSubmit = function(fm, evt) {
@@ -167,10 +189,10 @@ Lightbox.prototype.onResponseLoad = function(req) {
                case 'error' :
                        this.showSelection();
                        break;
-        case 'sorted' :
-            this.fm.submitButton = undefined;
-            this.refreshGrid();
-            break;
+               case 'sorted' :
+                       this.fm.submitButton = undefined;
+                       this.refreshGrid();
+                       break;
        }
 };
 
@@ -307,18 +329,63 @@ Lightbox.prototype.refreshGrid = function() {
        
        var url = absolute_url() +
                          '/portfolio_thumbnails_tail?start:int=0&size:int=' +
-                         this.grid.children.length;
+                         this.slides.length;
        req.open('GET', url, true);
        req.send();
 };
 
 Lightbox.prototype._refreshGrid = function(req) {
-    var doc = req.responseXML.documentElement;
-    var i;
-    var slides = this.grid.children;
-    for (i=0 ; i<doc.children.length ; i++) {
-        this.grid.replaceChild(getCopyOfNode(doc.children[i]), slides[i]);
-    }
+       var doc = req.responseXML.documentElement;
+       var i, node;
+       for (i=0 ; i<doc.childNodes.length ; i++) {
+               node = doc.childNodes[i];
+               if (node.nodeType === 1) {
+                       this.slides[i] = this.grid.replaceChild(getCopyOfNode(node), this.slides[i]);
+               }
+       }
+};
+
+Lightbox.prototype.fetchTail = function() {
+       var req = new XMLHttpRequest();
+       self = this;
+       req.onreadystatechange = function() {
+               switch (req.readyState) {
+                       case 1 :
+                               showProgressImage();
+                               break;
+                       case 4 :
+                               hideProgressImage();
+                               if (req.status === 200) {
+                                       self._appendTail(req)
+                               }
+                               break;
+               }
+       };
+       
+       var url = absolute_url() +
+                         '/portfolio_thumbnails_tail?start:int=' +
+                         String(this.slides.length + 1 ) +
+                         '&size:int=10';
+       req.open('GET', url, true);
+       req.send();
+};
+
+Lightbox.prototype._appendTail = function(req) {
+       var doc = req.responseXML.documentElement;
+       var i, node;
+       for (i=0 ; i<doc.childNodes.length ; i++) {
+               node = doc.childNodes[i];
+               if (node.nodeType === 1) {
+                       this.lastSlide = this.grid.appendChild(getCopyOfNode(node));
+                       this.slides.push(this.lastSlide);
+               }
+       }
+       this.fetchingDisabled = false;
+       if (doc.getAttribute('nomore')) {
+               this.complete = true;
+               console.info('complete');
+       }
+       this.windowScrollGridHandler();
 };