Gestion affichage lors de l'écrasement.

[Portfolio.git] / skins / fileupload.js

diff --git a/skins/fileupload.js b/skins/fileupload.js
index a67b3cf..3f5f8c5 100644 (file)
--- a/skins/fileupload.js
+++ b/skins/fileupload.js
@@ -2,15 +2,20 @@
 var DDFileUploader;
 
 (function(){
+// nombre maximun d'image chargées en local
+var MAX_PREVIEW = 2;
+var isThumbnail = /.*\/getThumbnail$/;
 
 DDFileUploader = function(dropbox, uploadUrl) {
        this.dropbox = dropbox;
+       this.existingSlides = this.indexExistingSlides();
        this.uploadUrl = uploadUrl;
        this.slideSize = 222;
        this.progressBarMaxSize = 200; // pixels
        this.thumbnailSize = 180;
        this.previewQueue = [];
        this._previewQueueRunning = false;
+       this.previewsLoaded = 0;
        this.uploadQueue = [];
        this._uploadQueueRunning = false;
        var self = this;
@@ -19,6 +24,18 @@ DDFileUploader = function(dropbox, uploadUrl) {
        addListener(dropbox, 'drop', function(evt){self.drop(evt);});
 };
 
+DDFileUploader.prototype.indexExistingSlides = function() {
+       var images = this.dropbox.getElementsByTagName('img');
+       var i;
+       var index = [];
+       for (i=0 ; i < images.length ; i++) {
+               if (isThumbnail.test(images[i].src)) {
+                       index[images[i].src] = images[i];
+               }
+       }
+       return index;
+};
+
 // Drag and drop
 DDFileUploader.prototype.dragenter = function(evt) {
        disableDefault(evt);
@@ -48,8 +65,8 @@ DDFileUploader.prototype.handleFiles = function(files) {
        for (i = 0; i < files.length; i++) {
                file = files[i];
                slide = this.createSlide(file);
-               this.previewQueuePush(slide);
-               this.uploadQueuePush(slide);
+        this.previewQueuePush(slide);
+        this.uploadQueuePush(slide);
        }
 };
 
@@ -57,22 +74,61 @@ DDFileUploader.prototype.upload = function(slide) {
        var reader = new FileReader();
        var req = new XMLHttpRequest();
        var file = slide.file;
+       this.uploadedSlide = slide;
        this.previewImg = slide.img;
        this.progressBar = slide.progressBar;
        var self = this;
        
        addListener(req.upload, 'progress', function(evt){self.progressHandler(evt);});
-       addListener(req.upload, 'load', function(evt){self.uploadCompleteHandler(evt);});
+       addListener(req, 'readystatechange',
+               function(evt) {
+                       if (req.readyState === 4) {
+                               self.uploadCompleteHandler(req);
+                       }
+               });
 
-       req.open("PUT", this.uploadUrl); // + '/' + file.name);
+       req.open("PUT", this.uploadUrl);
        req.setRequestHeader("Content-Type", file.type);
        req.setRequestHeader("X-File-Name", file.name);
-       addListener(reader, 'load', function(evt){req.sendAsBinary(evt.target.result);});
+       addListener(reader, 'load',
+               function(evt){
+                       try {
+                               req.sendAsBinary(evt.target.result);
+                       }
+                       catch(e){}
+               });
        reader.readAsBinaryString(file);
 };
 
-DDFileUploader.prototype.uploadCompleteHandler = function(evt) {
-       this.progressBar.parentNode.removeChild(this.progressBar);
+DDFileUploader.prototype.uploadCompleteHandler = function(req) {
+       var slide = this.uploadedSlide;
+       this.uploadedSlide.removeChild(slide.label);
+    this.uploadedSlide.removeChild(slide.progressBar);
+       var fragment = getCopyOfNode(req.responseXML.documentElement.firstChild);
+       var img = fragment.getElementsByTagName('img')[0];
+       if (req.status === 200) {
+               // update
+               var existing = this.existingSlides[img.src];
+               if (existing) {
+                       existing.src = existing.src + '?' + Math.random().toString();
+               }
+               slide.img.src = '';
+               slide.img.parentNode.removeChild(slide.img);
+               slide.img = undefined;
+               slide.parentNode.removeChild(slide);
+       }
+       else if(req.status === 201) {
+               // creation
+               img.onload = function(evt) {
+                       // accelerate GC before replacing
+                       slide.img.src = '';
+                       slide.img.parentNode.removeChild(slide.img);
+                       slide.img = undefined;
+                       slide.parentNode.replaceChild(fragment, slide);
+               };
+       }
+       this.previewsLoaded--;
+       this.previewQueueLoadNext();
        this.uploadQueueLoadNext();
 };
 
@@ -100,9 +156,10 @@ DDFileUploader.prototype.startPreviewQueue = function() {
 };
 
 DDFileUploader.prototype.previewQueueLoadNext = function() {
-       var slide = this.previewQueue.shift();
-       if (slide) {
+       if (this.previewQueue.length && this.previewsLoaded < MAX_PREVIEW) {
+               var slide = this.previewQueue.shift();
                this.previewUploadedImage(slide);
+               this.previewsLoaded++;
        }
        else {
                this._previewQueueRunning = false;
@@ -155,13 +212,18 @@ DDFileUploader.prototype.createSlide = function(file) {
                        img.width = Math.round(size * img.width / img.height);
                        img.height = size;
                }
-               img.style.marginLeft = Math.round((self.slideSize - img.width) / 2) + 'px';
-               img.style.marginTop = Math.round((self.slideSize - img.height) / 2) + 'px';
+               img.style.marginLeft = Math.floor((self.slideSize - img.width) / 2) + 'px';
+               img.style.marginTop = Math.floor((self.slideSize - img.height) / 2) + 'px';
                img.style.opacity = 0.2;
                img.className = undefined;
        };
        a.appendChild(img);
        slide.img = img;
+       
+       var label = document.createElement('span');
+       slide.label = label;
+       label.className = 'label';
+       label.innerHTML = file.name;
 
        var progressBar = document.createElement('span');
        progressBar.className = 'upload-progress';
@@ -169,6 +231,7 @@ DDFileUploader.prototype.createSlide = function(file) {
 
        slide.appendChild(a);
        slide.appendChild(progressBar);
+       slide.appendChild(label);
        this.dropbox.appendChild(slide);
        
        return slide;