X-Git-Url: https://scm.cri.mines-paristech.fr/git/Portfolio.git/blobdiff_plain/bd91faac408f84043a85815c89f728a1d46d89ce..5e46a54e179d7011976c89886f0a1ecca1b46f20:/skins/fileupload.js?ds=sidebyside

diff --git a/skins/fileupload.js b/skins/fileupload.js
index efef40b..4061a0c 100644
--- a/skins/fileupload.js
+++ b/skins/fileupload.js
@@ -1,16 +1,21 @@
 // © 2013 Benoît Pin MINES ParisTech
-var DDFileUploader;
+var DDFileUploaderBase;
 
 (function(){
+// nombre maximun d'image chargées en local
+var MAX_PREVIEW = 2;
+var isThumbnail = /.*\/getThumbnail$/;
 
-DDFileUploader = function(dropbox, uploadUrl) {
+DDFileUploaderBase = 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;
@@ -19,13 +24,25 @@ DDFileUploader = function(dropbox, uploadUrl) {
 	addListener(dropbox, 'drop', function(evt){self.drop(evt);});
 };
 
+DDFileUploaderBase.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) {
+DDFileUploaderBase.prototype.dragenter = function(evt) {
 	disableDefault(evt);
 	disablePropagation(evt);
 };
 
-DDFileUploader.prototype.dragover = function(evt) {
+DDFileUploaderBase.prototype.dragover = function(evt) {
 	disableDefault(evt);
 	disablePropagation(evt);
 	evt = getEventObject(evt);
@@ -33,7 +50,7 @@ DDFileUploader.prototype.dragover = function(evt) {
 	dt.dropEffect = 'copy';
 };
 
-DDFileUploader.prototype.drop = function(evt) {
+DDFileUploaderBase.prototype.drop = function(evt) {
 	disableDefault(evt);
 	disablePropagation(evt);
 	getEventObject(evt);
@@ -43,17 +60,17 @@ DDFileUploader.prototype.drop = function(evt) {
 };
 
 // Methods about upload
-DDFileUploader.prototype.handleFiles = function(files) {
+DDFileUploaderBase.prototype.handleFiles = function(files) {
 	var file, i, slide;
 	for (i = 0; i < files.length; i++) {
 		file = files[i];
 		slide = this.createSlide(file);
-        // this.previewQueuePush(slide);
+        this.previewQueuePush(slide);
         this.uploadQueuePush(slide);
 	}
 };
 
-DDFileUploader.prototype.upload = function(slide) {
+DDFileUploaderBase.prototype.upload = function(slide) {
 	var reader = new FileReader();
 	var req = new XMLHttpRequest();
 	var file = slide.file;
@@ -63,7 +80,12 @@ DDFileUploader.prototype.upload = function(slide) {
 	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);
 	req.setRequestHeader("Content-Type", file.type);
@@ -78,17 +100,39 @@ DDFileUploader.prototype.upload = function(slide) {
 	reader.readAsBinaryString(file);
 };
 
-DDFileUploader.prototype.uploadCompleteHandler = function(evt) {
+DDFileUploaderBase.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();
-	var req = getTargetedObject(evt);
-	console.log(req);
-	// this.slide.innerHTML = req.responseXML.documentElement
 };
 
-DDFileUploader.prototype.progressHandler = function(evt) {
+DDFileUploaderBase.prototype.progressHandler = function(evt) {
 	if (evt.lengthComputable) {
 		var progress = evt.loaded / evt.total;
 		this.updateProgressBar(progress);
@@ -99,42 +143,43 @@ DDFileUploader.prototype.progressHandler = function(evt) {
 
 // Method about queues
 
-DDFileUploader.prototype.previewQueuePush = function(slide) {
+DDFileUploaderBase.prototype.previewQueuePush = function(slide) {
 	this.previewQueue.push(slide);
 	if (!this._previewQueueRunning) {
 		this.startPreviewQueue();
 	}
 };
 
-DDFileUploader.prototype.startPreviewQueue = function() {
+DDFileUploaderBase.prototype.startPreviewQueue = function() {
 	this._previewQueueRunning = true;
 	this.previewQueueLoadNext();
 };
 
-DDFileUploader.prototype.previewQueueLoadNext = function() {
-	var slide = this.previewQueue.shift();
-	if (slide) {
+DDFileUploaderBase.prototype.previewQueueLoadNext = function() {
+	if (this.previewQueue.length && this.previewsLoaded < MAX_PREVIEW) {
+		var slide = this.previewQueue.shift();
 		this.previewUploadedImage(slide);
+		this.previewsLoaded++;
 	}
 	else {
 		this._previewQueueRunning = false;
 	}
 };
 
-DDFileUploader.prototype.uploadQueuePush = function(slide) {
+DDFileUploaderBase.prototype.uploadQueuePush = function(slide) {
 	this.uploadQueue.push(slide);
 	if (!this._uploadQueueRunning) {
 		this.startUploadQueue();
 	}
 };
 
-DDFileUploader.prototype.startUploadQueue = function() {
+DDFileUploaderBase.prototype.startUploadQueue = function() {
 	this._uploadQueueRunning = true;
 	this.uploadQueueLoadNext();
 };
 
 
-DDFileUploader.prototype.uploadQueueLoadNext = function() {
+DDFileUploaderBase.prototype.uploadQueueLoadNext = function() {
 	var slide = this.uploadQueue.shift();
 	if (slide) {
 		this.upload(slide);
@@ -146,7 +191,7 @@ DDFileUploader.prototype.uploadQueueLoadNext = function() {
 
 
 // User interface
-DDFileUploader.prototype.createSlide = function(file) {
+DDFileUploaderBase.prototype.createSlide = function(file) {
 	var slide = document.createElement('span');
 	slide.file = file;
 
@@ -167,8 +212,8 @@ 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;
 	};
@@ -192,14 +237,14 @@ DDFileUploader.prototype.createSlide = function(file) {
 	return slide;
 };
 
-DDFileUploader.prototype.updateProgressBar = function(progress) {
+DDFileUploaderBase.prototype.updateProgressBar = function(progress) {
 	// 0 <= progress <= 1
 	var size = this.progressBarMaxSize * progress;
 	size = Math.round(size);
 	this.progressBar.style.width = size + 'px';
 };
 
-DDFileUploader.prototype.previewUploadedImage = function(slide) {
+DDFileUploaderBase.prototype.previewUploadedImage = function(slide) {
 	var reader = new FileReader();
 	var size = this.thumbnailSize;
 	var self = this;