Avancement du refactoring.

[Plinn.git] / skins / fileupload.js

diff --git a/skins/fileupload.js b/skins/fileupload.js
index 980fb44..ff3f478 100644 (file)
--- a/skins/fileupload.js
+++ b/skins/fileupload.js
@@ -1,16 +1,11 @@
 // © 2013 Benoît Pin MINES ParisTech
-var DDFileUploader;
+var DDFileUploaderBase;
 
 (function(){
 
-DDFileUploader = function(dropbox, uploadUrl) {
+DDFileUploaderBase = function(dropbox, uploadUrl) {
        this.dropbox = dropbox;
        this.uploadUrl = uploadUrl;
-       this.slideSize = 222;
-       this.progressBarMaxSize = 200; // pixels
-       this.thumbnailSize = 180;
-       this.previewQueue = [];
-       this._previewQueueRunning = false;
        this.uploadQueue = [];
        this._uploadQueueRunning = false;
        var self = this;
@@ -20,12 +15,12 @@ DDFileUploader = function(dropbox, uploadUrl) {
 };
 
 // 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 +28,7 @@ DDFileUploader.prototype.dragover = function(evt) {
        dt.dropEffect = 'copy';
 };
 
-DDFileUploader.prototype.drop = function(evt) {
+DDFileUploaderBase.prototype.drop = function(evt) {
        disableDefault(evt);
        disablePropagation(evt);
        getEventObject(evt);
@@ -43,39 +38,73 @@ DDFileUploader.prototype.drop = function(evt) {
 };
 
 // Methods about upload
-DDFileUploader.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.uploadQueuePush(slide);
-       }
+DDFileUploaderBase.prototype.handleFiles = function(files) {
+       // To be implemented by descendant.
 };
 
-DDFileUploader.prototype.upload = function(slide) {
+DDFileUploaderBase.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);});
-
-       req.open("PUT", this.uploadUrl + '/' + file.name);
+       addListener(req, 'readystatechange',
+               function(evt) {
+                       if (req.readyState === 4) {
+                               self.uploadCompleteHandler(req);
+                       }
+               });
+
+       req.open("PUT", this.uploadUrl);
        req.setRequestHeader("Content-Type", file.type);
-       addListener(reader, 'load', function(evt){req.sendAsBinary(evt.target.result);});
+       req.setRequestHeader("X-File-Name", file.name);
+       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);
+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();
 };
 
-DDFileUploader.prototype.progressHandler = function(evt) {
+DDFileUploaderBase.prototype.progressHandler = function(evt) {
        if (evt.lengthComputable) {
                var progress = evt.loaded / evt.total;
                this.updateProgressBar(progress);
@@ -84,44 +113,21 @@ DDFileUploader.prototype.progressHandler = function(evt) {
        }
 };
 
-// Method about queues
-
-DDFileUploader.prototype.previewQueuePush = function(slide) {
-       this.previewQueue.push(slide);
-       if (!this._previewQueueRunning) {
-               this.startPreviewQueue();
-       }
-};
-
-DDFileUploader.prototype.startPreviewQueue = function() {
-       this._previewQueueRunning = true;
-       this.previewQueueLoadNext();
-};
-
-DDFileUploader.prototype.previewQueueLoadNext = function() {
-       var slide = this.previewQueue.shift();
-       if (slide) {
-               this.previewUploadedImage(slide);
-       }
-       else {
-               this._previewQueueRunning = false;
-       }
-};
-
-DDFileUploader.prototype.uploadQueuePush = function(slide) {
+// Methods about queue
+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);
@@ -133,7 +139,7 @@ DDFileUploader.prototype.uploadQueueLoadNext = function() {
 
 
 // User interface
-DDFileUploader.prototype.createSlide = function(file) {
+DDFileUploaderBase.prototype.createSlide = function(file) {
        var slide = document.createElement('span');
        slide.file = file;
 
@@ -154,13 +160,18 @@ 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';
@@ -168,19 +179,20 @@ DDFileUploader.prototype.createSlide = function(file) {
 
        slide.appendChild(a);
        slide.appendChild(progressBar);
+       slide.appendChild(label);
        this.dropbox.appendChild(slide);
        
        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;