X-Git-Url: https://scm.cri.ensmp.fr/git/Portfolio.git/blobdiff_plain/43adb66278c3cc61064db3039f1c27819525c4e3..8718d5e7245d0d80356e915c7d1b0f7f97b33ddf:/skins/fileupload.js diff --git a/skins/fileupload.js b/skins/fileupload.js index e467281..8f6eeda 100644 --- a/skins/fileupload.js +++ b/skins/fileupload.js @@ -2,6 +2,8 @@ var DDFileUploader; (function(){ +// nombre maximun d'image chargées en local +var MAX_PREVIEW = 2; DDFileUploader = function(dropbox, uploadUrl) { this.dropbox = dropbox; @@ -9,6 +11,11 @@ DDFileUploader = function(dropbox, 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; addListener(dropbox, 'dragenter', function(evt){self.dragenter(evt);}); addListener(dropbox, 'dragover', function(evt){self.dragover(evt);}); @@ -40,52 +47,130 @@ DDFileUploader.prototype.drop = function(evt) { // Methods about upload DDFileUploader.prototype.handleFiles = function(files) { - var file, i; + var file, i, slide; for (i = 0; i < files.length; i++) { file = files[i]; - this.createSlide(); - this.previewUploadedImage(file); - this.upload(file); + slide = this.createSlide(file); + this.previewQueuePush(slide); + this.uploadQueuePush(slide); } }; -DDFileUploader.prototype.upload = function(file) { +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);}); - - 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); +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]; + img.onload = function(evt) { + var preview = slide.getElementsByTagName('img')[0]; + preview.src = undefined; + slide.parentNode.replaceChild(fragment, slide); + }; + this.previewsLoaded--; + this.previewQueueLoadNext(); + this.uploadQueueLoadNext(); }; DDFileUploader.prototype.progressHandler = function(evt) { if (evt.lengthComputable) { var progress = evt.loaded / evt.total; this.updateProgressBar(progress); - var currentOpacity = this.previewImg.style.opacity + var currentOpacity = this.previewImg.style.opacity; this.previewImg.style.opacity = Math.max(currentOpacity, progress); } }; +// 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() { + 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) { + this.uploadQueue.push(slide); + if (!this._uploadQueueRunning) { + this.startUploadQueue(); + } +}; + +DDFileUploader.prototype.startUploadQueue = function() { + this._uploadQueueRunning = true; + this.uploadQueueLoadNext(); +}; + + +DDFileUploader.prototype.uploadQueueLoadNext = function() { + var slide = this.uploadQueue.shift(); + if (slide) { + this.upload(slide); + } + else { + this._uploadQueueRunning = false; + } +}; + + // User interface -DDFileUploader.prototype.createSlide = function() { +DDFileUploader.prototype.createSlide = function(file) { var slide = document.createElement('span'); + slide.file = file; var a = document.createElement('a'); a.href = '#'; a.className = 'slide'; var img = document.createElement('img'); - this.previewImg = img; + img.className = 'hidden'; var size = this.thumbnailSize; var self = this; img.onload = function(evt) { @@ -97,20 +182,29 @@ DDFileUploader.prototype.createSlide = function() { 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'; + slide.progressBar = progressBar; slide.appendChild(a); slide.appendChild(progressBar); - this.progressBar = progressBar; + slide.appendChild(label); this.dropbox.appendChild(slide); + + return slide; }; DDFileUploader.prototype.updateProgressBar = function(progress) { @@ -120,17 +214,16 @@ DDFileUploader.prototype.updateProgressBar = function(progress) { this.progressBar.style.width = size + 'px'; }; -DDFileUploader.prototype.previewUploadedImage = function(file) { +DDFileUploader.prototype.previewUploadedImage = function(slide) { var reader = new FileReader(); - var img = this.previewImg; var size = this.thumbnailSize; - - img.className = 'hidden'; + var self = this; reader.onload = function(evt) { - img.src = evt.target.result; + slide.img.src = evt.target.result; + setTimeout(function(){self.previewQueueLoadNext();}, 500); }; - reader.readAsDataURL(file); + reader.readAsDataURL(slide.file); }; }());