X-Git-Url: https://scm.cri.mines-paristech.fr/git/Portfolio.git/blobdiff_plain/992dde21cc051b895d8e5e98509c27edc4e3e304..69001494261054fc5bd36da7a77db57a9b779c7e:/skins/photo_lightbox_viewer.js

diff --git a/skins/photo_lightbox_viewer.js b/skins/photo_lightbox_viewer.js
index 9a57ac2..c649dc2 100644
--- a/skins/photo_lightbox_viewer.js
+++ b/skins/photo_lightbox_viewer.js
@@ -11,15 +11,20 @@ var Lightbox;
 
 var reSelected = /.*selected.*/;
 
-Lightbox = function(grid, toolbar) {
+Lightbox = function(grid, toolbar, complete) {
 	var self = this;
 	this.grid = grid;
-    this.lastSlide = this.grid.children[this.grid.children.length-1];
+	this._buildSlidesIndex(); // set this.slides and this.lastSlide;
+	this.fetchingDisabled = false;
+	this.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();});
+	registerStartupFunction(function(){ self.windowScrollGridHandler();});
 	this.lastCBChecked = undefined;
 	this.form = undefined;
 	var parent = this.grid.parentNode;
@@ -36,32 +41,51 @@ 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) {
-	if (this.toolbar.offsetTop < window.scrollY && !this.toolbarFixed) {
+Lightbox.prototype._buildSlidesIndex = function() {
+	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];
+};
+
+Lightbox.prototype.windowScrollToolbarlHandler = function(evt) {
+	if (this.toolbar.offsetTop < getWindowScrollY() && !this.toolbarFixed) {
 		this.toolbarFixed = true;
 		this.backThreshold = this.toolbar.offsetTop;
 		this.switchToolBarPositioning(true);
 	}
-	else if (this.toolbarFixed && window.scrollY < this.backThreshold) {
+	else if (this.toolbarFixed && getWindowScrollY() < this.backThreshold) {
 		this.toolbarFixed = false;
 		this.switchToolBarPositioning(false);
 	}
-    if (window.scrollY > this.lastSlide.firstElementChild.offsetTop - getWindowHeight()) {
-        this.fetchTail();
-    }
+};
+Lightbox.prototype.windowScrollGridHandler = function(evt) {
+	if (!this.complete &&
+		!this.fetchingDisabled &&
+		getWindowScrollY() >
+			(this.lastSlide.firstElementChild || this.lastSlide.children[0]).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;
@@ -148,11 +172,11 @@ 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) {
@@ -171,10 +195,10 @@ 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;
 	}
 };
 
@@ -237,7 +261,7 @@ Lightbox.prototype.deleteSelection = function() {
 };
 
 Lightbox.prototype._removeSelection = function() {
-	var i, e, slide;
+	var i, e;
 	var toRemove = [];
 	for (i=0 ; i<this.form.elements.length ; i++) {
 		e = this.form.elements[i];
@@ -246,10 +270,11 @@ Lightbox.prototype._removeSelection = function() {
 		}
 	}
 	for (i=0 ; i<toRemove.length ; i++) {
-		slide = toRemove[i];
-		slide.parentNode.removeChild(slide);
+		this.grid.removeChild(toRemove[i]);
 	}
+	this._buildSlidesIndex();
 	this.cbIndex = undefined;
+	this.windowScrollGridHandler();
 };
 
 Lightbox.prototype.getCBIndex = function(cb) {
@@ -257,14 +282,11 @@ Lightbox.prototype.getCBIndex = function(cb) {
 		// build checkbox index
 		this.cbIndex = [];
 		var i, node, c;
-		var nodes = this.grid.childNodes;
-		for (i=0 ; i<nodes.length ; i++) {
-			node = nodes[i];
-			if (node.nodeName === 'SPAN') {
-				c = node.getElementsByTagName('input')[0];
-				c.index = this.cbIndex.length;
-				this.cbIndex[this.cbIndex.length] = c;
-			}
+		for (i=0 ; i<this.slides.length ; i++) {
+			node = this.slides[i];
+			c = node.getElementsByTagName('input')[0];
+			c.index = this.cbIndex.length;
+			this.cbIndex.push(c);
 		}
 	}
 	return cb.index;
@@ -303,7 +325,7 @@ Lightbox.prototype.refreshGrid = function() {
 			case 4 :
 				hideProgressImage();
 				if (req.status === 200) {
-					self._refreshGrid(req)
+					self._refreshGrid(req);
 				}
 				break;
 		}
@@ -311,23 +333,30 @@ 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;
+	var j = 0;
+	for (i=0 ; i<doc.childNodes.length ; i++) {
+		node = doc.childNodes[i];
+		if (node.nodeType === 1) {
+			node = getCopyOfNode(node);
+			this.grid.replaceChild(node, this.slides[j]);
+			this.slides[j] = node;
+			j++;
+		}
+	}
+	this.cbIndex = undefined;
 };
 
 Lightbox.prototype.fetchTail = function() {
 	var req = new XMLHttpRequest();
-	self = this;
+	var self = this;
 	req.onreadystatechange = function() {
 		switch (req.readyState) {
 			case 1 :
@@ -336,7 +365,7 @@ Lightbox.prototype.fetchTail = function() {
 			case 4 :
 				hideProgressImage();
 				if (req.status === 200) {
-					self._appendTail(req)
+					self._appendTail(req);
 				}
 				break;
 		}
@@ -344,19 +373,33 @@ Lightbox.prototype.fetchTail = function() {
 	
 	var url = absolute_url() +
 			  '/portfolio_thumbnails_tail?start:int=' +
-              String(this.grid.children.length + 1 ) +
-              '&size:int=10';
+			  String(this.slides.length) +
+			  '&size:int=10';
 	req.open('GET', url, true);
 	req.send();
 };
 
 Lightbox.prototype._appendTail = 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, c;
+	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);
+			if (this.cbIndex) {
+				c = this.lastSlide.getElementsByTagName('input')[0];
+				c.index = this.cbIndex.length;
+				this.cbIndex.push(c);
+				
+			}
+		}
+	}
+	this.fetchingDisabled = false;
+	if (doc.getAttribute('nomore')) {
+		this.complete = true;
+	}
+	this.windowScrollGridHandler();
 };