X-Git-Url: https://svn.cri.ensmp.fr/git/Portfolio.git/blobdiff_plain/d2c54b79af112bf32ae357779b1dca0d148e7eb6..e0660307a6fa16a363722bcf06f74bb9f53e1d30:/skins/photo_lightbox_viewer.js

diff --git a/skins/photo_lightbox_viewer.js b/skins/photo_lightbox_viewer.js
index 5244a68..cf39a0a 100644
--- 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();
 };