Fetch des photos suivante (implémentation incomplète).

[Portfolio.git] / skins / photo_lightbox_viewer.js

diff --git a/skins/photo_lightbox_viewer.js b/skins/photo_lightbox_viewer.js
index dbea64c..9a57ac2 100644 (file)
--- a/skins/photo_lightbox_viewer.js
+++ b/skins/photo_lightbox_viewer.js
@@ -11,8 +11,15 @@ var Lightbox;
 
 var reSelected = /.*selected.*/;
 
-Lightbox = function(grid) {
+Lightbox = function(grid, toolbar) {
+       var self = this;
        this.grid = grid;
+    this.lastSlide = this.grid.children[this.grid.children.length-1];
+       this.toolbar = toolbar;
+       if (toolbar) {
+               this.toolbarFixed = false;
+               addListener(window, 'scroll', function(evt){self.windowScrollHandler(evt);});
+       }
        this.lastCBChecked = undefined;
        this.form = undefined;
        var parent = this.grid.parentNode;
@@ -26,15 +33,30 @@ Lightbox = function(grid) {
                        break;
                }
        }
-       thisLightbox = this;
-       addListener(this.grid, 'click', function(evt){thisLightbox.mouseClickHandler(evt);});
+       addListener(this.grid, 'click', function(evt){self.mouseClickHandler(evt);});
        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.windowScrollHandler = function(evt) {
+       if (this.toolbar.offsetTop < window.scrollY && !this.toolbarFixed) {
+               this.toolbarFixed = true;
+               this.backThreshold = this.toolbar.offsetTop;
+               this.switchToolBarPositioning(true);
+       }
+       else if (this.toolbarFixed && window.scrollY < this.backThreshold) {
+               this.toolbarFixed = false;
+               this.switchToolBarPositioning(false);
+       }
+    if (window.scrollY > this.lastSlide.firstElementChild.offsetTop - getWindowHeight()) {
+        this.fetchTail();
+    }
+};
+
 Lightbox.prototype.mouseClickHandler = function(evt) {
        var target = getTargetedObject(evt);
        if (target.tagName === 'IMG') {
@@ -125,6 +147,14 @@ 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' :
@@ -141,9 +171,34 @@ Lightbox.prototype.onResponseLoad = function(req) {
                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++) {
@@ -237,6 +292,73 @@ 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.grid.children.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]);
+    }
+};
+
+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.grid.children.length + 1 ) +
+              '&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 _outlineSelectedSlide;
 if (browser.isGecko) {