Optimisation du chargement des vignettes juxtaposées à celle affichée.

[Portfolio.git] / skins / photo_lightbox_viewer.js

diff --git a/skins/photo_lightbox_viewer.js b/skins/photo_lightbox_viewer.js
index 7361a4f..c649dc2 100644 (file)
--- a/skins/photo_lightbox_viewer.js
+++ b/skins/photo_lightbox_viewer.js
@@ -11,8 +11,20 @@ var Lightbox;
 
 var reSelected = /.*selected.*/;
 
 
 var reSelected = /.*selected.*/;
 

-Lightbox = function(grid) {
+Lightbox = function(grid, toolbar, complete) {
+       var self = this;

        this.grid = grid;
        this.grid = grid;

+       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.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;
        this.lastCBChecked = undefined;
        this.form = undefined;
        var parent = this.grid.parentNode;


@@ -26,12 +38,46 @@ Lightbox = function(grid) {
                        break;
                }
        }
                        break;
                }
        }

-       thisLightbox = this;
-       addListener(this.grid, 'click', function(evt){thisLightbox.mouseClickHandler(evt);});
+       addListener(this.grid, 'click', function(evt){self.mouseClickHandler(evt);});

        if (this.form) {
        if (this.form) {

-               var fm = new FormManager(this.form);
-               fm.onBeforeSubmit = function(fm_, evt) {return thisLightbox.onBeforeSubmit(fm_, evt);};
-               fm.onResponseLoad = function(req) {return thisLightbox.onResponseLoad(req);};
+               var fm = this.fm = new FormManager(this.form);
+               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._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 && getWindowScrollY() < this.backThreshold) {
+               this.toolbarFixed = false;
+               this.switchToolBarPositioning(false);
+       }
+};
+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();

        }
 };
 
        }
 };
 


@@ -39,7 +85,7 @@ Lightbox.prototype.mouseClickHandler = function(evt) {
        var target = getTargetedObject(evt);
        if (target.tagName === 'IMG') {
                var img = target;
        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;
                var button =  link.parentNode;
                var slide = button.parentNode;
                var req, url;


@@ -125,6 +171,14 @@ 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);
+       }
+};
+

 Lightbox.prototype.onBeforeSubmit = function(fm, evt) {
        switch(fm.submitButton.name) {
                case 'delete' :
 Lightbox.prototype.onBeforeSubmit = function(fm, evt) {
        switch(fm.submitButton.name) {
                case 'delete' :


@@ -141,9 +195,34 @@ Lightbox.prototype.onResponseLoad = function(req) {
                case 'error' :
                        this.showSelection();
                        break;
                case 'error' :
                        this.showSelection();
                        break;

+               case 'sorted' :
+                       this.fm.submitButton = undefined;
+                       this.refreshGrid();
+                       break;
+       }
+};
+
+Lightbox.prototype.switchToolBarPositioning = function(fixed) {
+       var tbs = this.toolbar.style;
+       if (fixed) {
+               this.toolbar.defaultCssText = this.toolbar.style.cssText;
+               tbs.width = String(this.toolbar.offsetWidth) + 'px';
+               tbs.height = String(this.toolbar.offsetHeight) + 'px';
+               tbs.position = 'fixed';
+               tbs.top = '0';
+               this.toolbarPlaceholder = document.createElement('div');
+               var phs = this.toolbarPlaceholder.style;
+               phs.cssText = tbs.cssText;
+               phs.position = 'relative';
+               this.toolbar.parentNode.insertBefore(this.toolbarPlaceholder, this.toolbar);
+       }
+       else {
+               this.toolbarPlaceholder.parentNode.removeChild(this.toolbarPlaceholder);
+               tbs.cssText = this.toolbar.defaultCssText;

        }
 };
 
        }
 };
 

+

 Lightbox.prototype.hideSelection = function() {
        var i, e, slide;
        for (i=0 ; i<this.form.elements.length ; i++) {
 Lightbox.prototype.hideSelection = function() {
        var i, e, slide;
        for (i=0 ; i<this.form.elements.length ; i++) {


@@ -182,8 +261,7 @@ Lightbox.prototype.deleteSelection = function() {
 };
 
 Lightbox.prototype._removeSelection = function() {
 };
 
 Lightbox.prototype._removeSelection = function() {

-       console.info('_removeSelection');
-       var i, e, slide;
+       var i, e;

        var toRemove = [];
        for (i=0 ; i<this.form.elements.length ; i++) {
                e = this.form.elements[i];
        var toRemove = [];
        for (i=0 ; i<this.form.elements.length ; i++) {
                e = this.form.elements[i];


@@ -192,10 +270,11 @@ Lightbox.prototype._removeSelection = function() {
                }
        }
        for (i=0 ; i<toRemove.length ; i++) {
                }
        }
        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.cbIndex = undefined;

+       this.windowScrollGridHandler();

 };
 
 Lightbox.prototype.getCBIndex = function(cb) {
 };
 
 Lightbox.prototype.getCBIndex = function(cb) {


@@ -203,14 +282,11 @@ Lightbox.prototype.getCBIndex = function(cb) {
                // build checkbox index
                this.cbIndex = [];
                var i, node, c;
                // 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;
                }
        }
        return cb.index;


@@ -238,6 +314,94 @@ Lightbox.prototype.selectCBRange = function(evt) {
        }
 };
 
        }
 };
 

+Lightbox.prototype.refreshGrid = 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._refreshGrid(req);
+                               }
+                               break;
+               }
+       };
+       
+       var url = absolute_url() +
+                         '/portfolio_thumbnails_tail?start:int=0&size:int=' +
+                         this.slides.length;
+       req.open('GET', url, true);
+       req.send();
+};
+
+Lightbox.prototype._refreshGrid = function(req) {
+       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();
+       var 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) +
+                         '&size:int=10';
+       req.open('GET', url, true);
+       req.send();
+};
+
+Lightbox.prototype._appendTail = function(req) {
+       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();
+};
+

 
 var _outlineSelectedSlide;
 if (browser.isGecko) {
 
 var _outlineSelectedSlide;
 if (browser.isGecko) {